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Observed 1:15 PM CDT at K9V9

Fort Thompson, SD weather

Overcast and 50°10°, rain tomorrow ~7 AM–8 PM (92%).

Today: low 38°3° (likely 38°3° to 48°9°), high 56°13° (likely 56°13° to 70°21°).

Mostly agree

Now 50°10°

Cloudy

Wind
17 mph28 km/hgusts 24 mph39 km/h
From the northwest. Easing to 5 mph8 km/h by 7 PM
Dew point
35°2°
Dry, static shocks likely
UV index
3Moderate
Moderate until 3 PM

Next 2 hours

No precipitation expected in the next 2 hours.

Next 48 hours

24°13° cooler than this time yesterday (74°23° then, 50°10° now)

Good hours for
  • Dry until 7 AM tomorrow
  • High 54°12° tonight at 6 PM
  • Low 42°6° tonight at 2 AM
  • Rain tomorrow from 7 AM (100%, 6.9 in176 mm)
  • Gusts to 27 mph43 km/h Monday 10 AM–1 PM
  1. This afternoonNear 52°11° · Cloudy
  2. TonightDown to 42°6° by 2 AM · rain chance 20% · Mostly cloudy
  3. Tomorrow morningNear 44°7° · Rain 7 AM–noon (90%)
  4. Tomorrow afternoonNear 44°7° · Rain all afternoon (90%)
  5. Tomorrow nightNear 42°6° · Rain all night (100%)
  6. Monday morningNear 41°5° · Rain all morning (100%) · gusts to 26 mph42 km/h
Hourly forecast, next 48 hours, in the place's local time
HourConditionsTemperatureFeels likePrecipitationWindHumidityCloud coverUV index
Sat 2pCloudy51°11° (likely 51°11° to 54°12°)51°11°0%23 mph37 km/h from NNW, gusts 22 mph35 km/h52%86%3
Sat 3pCloudy52°11° (likely 52°11° to 55°13°)52°11°0%21 mph34 km/h from NNW, gusts 20 mph32 km/h46%84%2
Sat 4pCloudy52°11° (likely 52°11° to 55°13°)52°11°0%18 mph29 km/h from NNW, gusts 17 mph27 km/h44%86%1
Sat 5pCloudy53°12° (likely 52°11° to 55°13°)53°12°0%14 mph23 km/h from NNW, gusts 15 mph25 km/h43%86%0
Sat 6pCloudy54°12° (likely 52°11° to 54°12°)54°12°0%8 mph13 km/h from N, gusts 11 mph17 km/h41%84%0
Sat 7pCloudy51°11° (likely 49°9° to 52°11°)51°11°0%5 mph8 km/h from N, gusts 8 mph13 km/h46%84%0
Sat 8pCloudy49°9° (likely 47°8° to 51°11°)47°8°0%5 mph8 km/h from N, gusts 7 mph11 km/h50%82%0
Sat 9pCloudy47°8° (likely 44°7° to 50°10°)46°8°0%3 mph5 km/h from N, gusts 6 mph10 km/h51%81%0
Sat 10pCloudy46°8° (likely 43°6° to 49°9°)45°7°0%3 mph5 km/h from N, gusts 5 mph8 km/h53%81%0
Sat 11pCloudy44°7° (likely 41°5° to 48°9°)42°6°0%3 mph5 km/h from NNE, gusts 6 mph9 km/h58%79%0
Sun 12aClear43°6° (likely 40°4° to 47°8°)41°5°0%3 mph5 km/h from NNE, gusts 7 mph11 km/h57%39%0
Sun 1aClear43°6° (likely 40°4° to 45°7°)40°4°0%5 mph8 km/h from NNE, gusts 6 mph10 km/h55%38%0
Sun 2aCloudy42°6° (likely 39°4° to 45°7°)39°4°5%5 mph8 km/h from NE, gusts 5 mph9 km/h57%73%0
Sun 3aCloudy42°6° (likely 39°4° to 45°7°)39°4°10%5 mph8 km/h from NE, gusts 5 mph8 km/h57%88%0
Sun 4aCloudy43°6° (likely 39°4° to 45°7°)40°4°10%5 mph8 km/h from ENE, gusts 5 mph8 km/h55%94%0
Sun 5aCloudy42°6° (likely 39°4° to 45°7°)39°4°20%5 mph8 km/h from ENE, gusts 4 mph7 km/h60%99%0
Sun 6aCloudy43°6° (likely 39°4° to 46°8°)40°4°30%5 mph8 km/h from ENE, gusts 4 mph6 km/h57%100%0
Sun 7aCloudy43°6° (likely 43°6° to 46°8°)39°4°40%, 0.12 in3 mm6 mph10 km/h from E, gusts 9 mph14 km/h60%100%0
Sun 8aRain43°6° (likely 43°6° to 46°8°)39°4°60%, 0.12 in3 mm6 mph10 km/h from ENE, gusts 10 mph16 km/h65%100%0
Sun 9aDrizzle43°6° (likely 43°6° to 46°8°)39°4°60%, 0.12 in3 mm6 mph10 km/h from ENE, gusts 11 mph17 km/h73%100%0
Sun 10aRain45°7° (likely 43°6° to 46°8°)42°6°90%, 0.12 in3 mm6 mph10 km/h from ENE, gusts 11 mph18 km/h73%100%0
Sun 11aRain45°7° (likely 43°6° to 46°8°)41°5°70%, 0.12 in3 mm7 mph11 km/h from ENE, gusts 12 mph19 km/h76%100%0
Sun 12pRain44°7° (likely 43°6° to 46°8°)39°4°50%, 0.12 in3 mm8 mph13 km/h from ENE, gusts 14 mph23 km/h82%100%0
Sun 1pDrizzle44°7° (likely 42°6° to 46°8°)39°4°70%, 0.1 in2.5 mm9 mph14 km/h from ENE, gusts 16 mph26 km/h82%100%0
Sun 2pRain44°7° (likely 42°6° to 46°8°)38°3°90%, 0.1 in2.5 mm10 mph16 km/h from ENE, gusts 18 mph28 km/h82%100%0
Sun 3pRain44°7° (likely 42°6° to 46°8°)38°3°90%, 0.1 in2.5 mm12 mph19 km/h from ENE, gusts 17 mph28 km/h82%100%0
Sun 4pRain44°7° (likely 42°6° to 46°8°)38°3°60%, 0.1 in2.5 mm12 mph19 km/h from ENE, gusts 17 mph28 km/h82%100%0
Sun 5pRain43°6° (likely 41°5° to 45°7°)37°3°70%, 0.1 in2.5 mm12 mph19 km/h from ENE, gusts 18 mph29 km/h86%100%0
Sun 6pRain43°6° (likely 41°5° to 44°7°)37°3°50%, 0.1 in2.5 mm12 mph19 km/h from ENE, gusts 16 mph26 km/h89%100%0
Sun 7pRain42°6° (likely 41°5° to 44°7°)36°2°60%, 0.06 in1.5 mm12 mph19 km/h from ENE, gusts 17 mph27 km/h93%100%0
Sun 8pRain41°5° (likely 41°5° to 44°7°)34°1°60%, 0.06 in1.5 mm12 mph19 km/h from ENE, gusts 18 mph29 km/h93%100%0
Sun 9pRain41°5° (likely 40°4° to 43°6°)35°2°30%, 0.06 in1.5 mm10 mph16 km/h from ENE, gusts 18 mph29 km/h93%100%0
Sun 10pRain41°5° (likely 41°5° to 43°6°)35°2°30%, 0.06 in1.5 mm10 mph16 km/h from ENE, gusts 18 mph30 km/h93%100%0
Sun 11pRain41°5° (likely 40°4° to 43°6°)34°1°20%, 0.06 in1.5 mm12 mph19 km/h from ENE, gusts 17 mph27 km/h93%100%0
Mon 12aRain41°5° (likely 41°5° to 42°6°)34°1°40%, 0.06 in1.5 mm12 mph19 km/h from ENE, gusts 18 mph28 km/h93%100%0
Mon 1aRain41°5° (likely 41°5° to 42°6°)34°1°70%, 0.36 in9.1 mm12 mph19 km/h from ENE, gusts 19 mph31 km/h93%100%0
Mon 2aRain41°5° (likely 40°4° to 43°6°)34°1°90%, 0.36 in9.1 mm12 mph19 km/h from ENE, gusts 19 mph30 km/h93%100%0
Mon 3aDrizzle41°5° (likely 40°4° to 43°6°)34°1°100%, 0.36 in9.1 mm12 mph19 km/h from ENE, gusts 20 mph32 km/h93%100%0
Mon 4aRain41°5° (likely 40°4° to 43°6°)34°1°90%, 0.36 in9.1 mm13 mph21 km/h from ENE, gusts 20 mph32 km/h93%100%0
Mon 5aRain41°5° (likely 41°5° to 43°6°)33°1°70%, 0.36 in9.1 mm14 mph23 km/h from ENE, gusts 19 mph30 km/h89%100%0
Mon 6aRain40°4° (likely 40°4° to 43°6°)32°0°90%, 0.36 in9.1 mm15 mph24 km/h from ENE, gusts 22 mph36 km/h92%100%0
Mon 7aRain40°4° (likely 40°4° to 43°6°)32°0°100%, 0.46 in12 mm15 mph24 km/h from ENE, gusts 22 mph35 km/h89%100%0
Mon 8aRain39°4° (likely 39°4° to 44°7°)30°−1°100%, 0.46 in12 mm16 mph26 km/h from ENE, gusts 23 mph37 km/h85%100%0
Mon 9aRain39°4° (likely 39°4° to 44°7°)30°−1°100%, 0.46 in12 mm16 mph26 km/h from ENE, gusts 24 mph39 km/h92%100%0
Mon 10aRain41°5° (likely 41°5° to 44°7°)33°1°100%, 0.46 in12 mm16 mph26 km/h from ENE, gusts 25 mph41 km/h100%100%0
Mon 11aRain41°5° (likely 41°5° to 44°7°)33°1°100%, 0.46 in12 mm16 mph26 km/h from ENE, gusts 26 mph42 km/h100%100%0
Mon 12pRain41°5° (likely 41°5° to 44°7°)32°0°100%, 0.46 in12 mm17 mph27 km/h from ENE, gusts 27 mph43 km/h100%100%0
Mon 1pRain41°5° (likely 41°5° to 44°7°)32°0°100%, 0.34 in8.6 mm17 mph27 km/h from ENE, gusts 25 mph40 km/h100%100%0

Days ahead

Shaded: typical range for these dates (1991–2020)
  1. Today, Oct 24. Cloudy. High 56°13°, low 38°3°. Typical 57°14° / 32°0°. Dry. Mostly agree.
    1. Afternoon

      noon–6 PM

      Cloudy, 53°12°

      Dry

    2. Evening

      6 PM–midnight

      Cloudy, 49°9°

      Dry

    3. Overnight

      midnight–6 AM

      Cloudy, 42°6°

      20% chance

    Official NWS forecast

    Today: Mostly cloudy. High near 56, with temperatures falling to around 53 in the afternoon. North northwest wind 14 to 23 mph, with gusts as high as 35 mph.

    Tonight: A slight chance of rain after 5am. Mostly cloudy. Low around 38, with temperatures rising to around 42 overnight. Northeast wind 3 to 8 mph. Chance of precipitation is 20%.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    56°13°–70°21°
    Low, likely
    38°3°–48°9°
    Typical high / low
    57°14° / 32°0°
    Wind
    27 mph43 km/h, gusts 44 mph71 km/h
    UV peak
    3
  2. Tomorrow, Oct 25. Rain. High 48°9°, low 37°3°. Typical 57°14° / 32°0°. Rain 0.41 in10 mm, 90% chance. Mostly agree.
    1. Morning

      6 AM–noon

      Rain, 43°6°

      90% chance · 0.6 in15 mm

    2. Afternoon

      noon–6 PM

      Rain, 44°7°

      90% chance · 0.62 in16 mm

    3. Evening

      6 PM–midnight

      Rain, 41°5°

      60% chance · 0.4 in10 mm

    4. Overnight

      midnight–6 AM

      Rain, 41°5°

      100% chance · 1.9 in47 mm

    Official NWS forecast

    Day: Rain. Cloudy. High near 48, with temperatures falling to around 43 in the afternoon. East northeast wind 5 to 12 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.

    Night: Rain. Cloudy, with a low around 37. East northeast wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    45°7°–48°9°
    Low, likely
    37°3°–42°6°
    Typical high / low
    57°14° / 32°0°
    Wind
    12 mph20 km/h, gusts 22 mph36 km/h
  3. Monday, Oct 26. Rain. High 45°7°, low 32°0°. Typical 56°13° / 31°−1°. Rain 1.2 in29 mm, 100% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Rain, 39°4°

      100% chance · 2.7 in68 mm

    2. Afternoon

      noon–6 PM

      Rain, 43°6°

      100% chance · 1 in27 mm

    3. Evening

      6 PM–midnight

      Rain, 44°7°

      100% chance · 0.38 in9.8 mm

    4. Overnight

      midnight–6 AM

      Cloudy, 41°5°

      60% chance · 0.03 in0.8 mm

    Official NWS forecast

    Day: Rain. Cloudy, with a high near 45. Northeast wind around 17 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Night: Rain before 1am. Cloudy, with a low around 32. North wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    43°6°–47°8°
    Low, likely
    32°0°–42°6°
    Typical high / low
    56°13° / 31°−1°
    Wind
    18 mph29 km/h, gusts 28 mph46 km/h
  4. Tuesday, Oct 27. Mostly cloudy. High 56°13°, low 38°3°. Typical 56°13° / 31°−1°. Dry. Mostly agree.
    1. Morning

      6 AM–noon

      Partly sunny, 41°5°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 56°13°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 53°12°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 41°5°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Mostly cloudy, with a high near 56. South southwest wind 3 to 13 mph, with gusts as high as 21 mph.

    Night: Partly cloudy, with a low around 38. South wind 6 to 12 mph.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    55°13°–60°16°
    Low, likely
    38°3°–41°5°
    Typical high / low
    56°13° / 31°−1°
    Wind
    19 mph31 km/h, gusts 30 mph49 km/h
    UV peak
    4
  5. Wednesday, Oct 28. Mostly sunny. High 62°17°, low 38°3°. Typical 55°13° / 30°−1°. Dry. Mostly agree. Best day outdoors this week.
    1. Morning

      6 AM–noon

      Cloudy, 41°5°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 59°15°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 52°11°

      Dry

    4. Overnight

      midnight–6 AM

      Mostly clear, 42°5°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Sunny, with a high near 62. West southwest wind 5 to 9 mph.

    Night: Mostly clear, with a low around 38.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    Best day outdoors this week: the one dry, mild day the forecasts agree on (high 62°17°).

    High, likely
    58°14°–62°17°
    Low, likely
    37°3°–44°7°
    Typical high / low
    55°13° / 30°−1°
    Wind
    11 mph17 km/h, gusts 41 mph65 km/h
    UV peak
    3
  6. Thursday, Oct 29. Partly sunny. High 63°17°, low 44°7°. Typical 55°13° / 30°−1°. Dry. Forecasts differ.
    1. Morning

      6 AM–noon

      Sunny, 42°6°

      Dry

    2. Afternoon

      noon–6 PM

      Mostly sunny, 60°16°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 54°12°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 53°12°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Mostly sunny, with a high near 63.

    Night: Partly cloudy, with a low around 44.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    58°14°–63°17°
    Low, likely
    37°3°–45°7°
    Typical high / low
    55°13° / 30°−1°
    Wind
    13 mph21 km/h, gusts 37 mph60 km/h
    UV peak
    3
  7. Friday, Oct 30. Rain. High 64°18°, low 45°7°. Typical 54°12° / 30°−1°. Rain 0.01 in0.3 mm, 20% chance. Mostly agree.
    1. Morning

      6 AM–noon

      Cloudy, 53°12°

      Dry

    2. Afternoon

      noon–6 PM

      Partly sunny, 66°19°

      Dry

    3. Evening

      6 PM–midnight

      Partly cloudy, 60°16°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 55°13°

      20% chance

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: A slight chance of rain after 1pm. Partly sunny, with a high near 64. Chance of precipitation is 20%.

    Night: A chance of rain. Mostly cloudy, with a low around 45. Chance of precipitation is 30%.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    63°17°–69°21°
    Low, likely
    45°7°–52°11°
    Typical high / low
    54°12° / 30°−1°
    Wind
    12 mph19 km/h, gusts 30 mph49 km/h
    UV peak
    3
  8. Saturday, Oct 31. Drizzle. High 57°14°, low 49°9°. Typical 54°12° / 29°−2°. Rain 0.2 in5.1 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 56°13°

      20% chance · 0.03 in0.7 mm

    2. Afternoon

      noon–6 PM

      Drizzle, 59°15°

      20% chance · 0.17 in4.4 mm

    3. Evening

      6 PM–midnight

      Drizzle, 54°12°

      20% chance · 0.04 in1 mm

    4. Overnight

      midnight–6 AM

      Partly cloudy, 47°8°

      Dry

    Hours this far out come from computer models only.

    The National Weather Service writes about seven days ahead; this day is our model forecast only.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    50°10°–66°19°
    Low, likely
    42°6°–59°15°
    Typical high / low
    54°12° / 29°−2°
    Wind
    15 mph24 km/h, gusts 29 mph47 km/h
  9. Sunday, Nov 1. Drizzle. High 54°12°, low 45°7°. Typical 53°12° / 29°−2°. Rain 0.05 in1.3 mm, 20% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 47°8°

      Dry

    2. Afternoon

      noon–6 PM

      Drizzle, 54°12°

      Dry

    3. Evening

      6 PM–midnight

      Mostly clear, 50°10°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 43°6°

      Dry

    Hours this far out come from computer models only.

    The National Weather Service writes about seven days ahead; this day is our model forecast only.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    48°9°–65°18°
    Low, likely
    38°3°–57°14°
    Typical high / low
    53°12° / 29°−2°
    Wind
    16 mph25 km/h, gusts 47 mph76 km/h
    UV peak
    2
  10. Monday, Nov 2. Sunny. High 56°13°, low 42°6°. Typical 52°11° / 28°−2°. Rain 0.06 in1.5 mm, 20% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Sunny, 44°7°

      20% chance

    2. Afternoon

      noon–6 PM

      Sunny, 57°14°

      20% chance

    3. Evening

      6 PM–midnight

      Clear, 50°10°

      20% chance · 0.02 in0.4 mm

    Hours this far out come from computer models only.

    The National Weather Service writes about seven days ahead; this day is our model forecast only.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    52°11°–60°16°
    Low, likely
    39°4°–50°10°
    Typical high / low
    52°11° / 28°−2°
    Wind
    16 mph25 km/h, gusts 39 mph63 km/h
    UV peak
    3

The outlook

  1. Today

    Dry, high 56°, low 38°.

  2. Tomorrow

    92% chance of rain, high 48°, low 37°, cooling off.

  3. Monday

    99% chance of rain, high 45°, low 32°, cooling off.

  4. Rest of week

    Mostly dry, highs 54–64°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (ABR) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue
Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Missouri River at Big Bend Dam

2.3 mi
Below flood stage
Level
1421 ft

Reading from Sat 11 AM · NWS gauge page

Elm Creek (SD) near Gann Valley

13 mi
Below flood stage
Level
3.5 ft
Flow
18 cfs

Reading from Sat 11:45 AM · NWS gauge page

Missouri River at Chamberlain

17 mi
Below flood stage
Level
48.3 ft

Reading from Sat 12:30 PM · NWS gauge page

White River (NE-SD) near Oacoma

23 mi
Below flood stage
Level
8.0 ft

Reading from Sat 12:15 PM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 72% less heating than a typical week.

This week 42Typical 152

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F
41
h below 17°F
0
h below 5°F
0

47, 17 and 5°F are the test points heat pumps are rated at. About 19 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 35°F).

Open the windows?

No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.

Is this typical?

Lake Sharpe Project · official normals 1991–2020 · records 1965–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

Normal high / low
57°14° / 32°0°
Forecast high / low
56°13° / 38°3°
Record high
78°26° in 1973
Record low
19°−7° in 1981

Last 7 days vs normal

On average 13°7° warmer than normal (daily mean temperature).

  1. +10°+5°SunOct 18
  2. +9°+5°MonOct 19
  3. +8°+4°TueOct 20
  4. +12°+6°WedOct 21
  5. +14°+8°ThuOct 22
  6. +17°+9°FriOct 23
  7. +21°+12°SatOct 24

Fort Thompson weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Sunrise 8:03 AM, sunset 6:39 PM.

Daylight
10 h 35 min
Losing 2 min 53 s a day; shortest Dec 21, 1 h 42 min less
Golden hour
5:58–6:57 PM
Morning 7:45–8:44 AM
Blue hour
6:57–7:08 PM
Morning 7:34–7:45 AM; first light 7:34 AM

Stars tonight? Poor

Clouds most of the night (about 80% cover).

Moon

Waxing gibbous

97% lit · growing

Today
sets 6:17 AM · rises 5:38 PM
Full moon
Oct 25
New moon
Nov 9
Looking southwest from Fort Thompson. The highest point on the skyline is about 2,200 ft, 12 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.