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Observed 7:55 AM CDT at KHON

Iroquois, SD weather

Windy and 51°11°, gusts to 34 mph54 km/h today.

Today: low 38°3° (likely 38°3° to 47°8°), high 59°15° (likely 59°15° to 68°20°).

Mostly agree

Now 51°11°

Windy

Wind
20 mph32 km/hgusts 26 mph42 km/h
From the northwest. Easing to 5 mph8 km/h by 7 PM
Dew point
43°6°
Comfortable · down to 35°2° by 5 PM
UV index
0Low
Moderate 1–3 PM · peak 3

Next 2 hours

No precipitation expected in the next 2 hours.

Next 48 hours

12°6° cooler than this time yesterday (63°17° then, 51°11° now)

Good hours for
  • Rain until 11 AM (40%)
  • Gusts to 34 mph55 km/h until 1 PM
  • Below 50°10° tonight after 8 PM
  • Rain tomorrow from 7 AM (90%, 2.7 in70 mm)
  • Gusts to 26 mph42 km/h tomorrow night from 5 AM
  1. This morningDown to 53°12° by 10 AM · Rain 8–11 AM (40%) · gusts to 34 mph55 km/h
  2. This afternoonNear 54°12° · rain chance 20% · gusts to 27 mph43 km/h · Cloudy
  3. TonightDown to 42°6° by 5 AM · Mostly cloudy
  4. Tomorrow morningUp to 46°8° by 11 AM · Rain 7 AM–noon (70%)
  5. Tomorrow afternoonNear 47°8° · Rain all afternoon (70%)
  6. Tomorrow nightDown to 38°3° by 5 AM · Rain all night (90%) · gusts to 25 mph40 km/h
Hourly forecast, next 48 hours, in the place's local time
HourConditionsTemperatureFeels likePrecipitationWindHumidityCloud coverUV index
Sat 8aCloudy57°14° (likely 55°13° to 59°15°)57°14°40%, 0.01 in0.3 mm15 mph24 km/h from NW, gusts 34 mph54 km/h66%99%0
Sat 9aShowers54°12° (likely 51°11° to 56°13°)54°12°40%, 0.01 in0.3 mm20 mph32 km/h from NW, gusts 34 mph54 km/h69%99%0
Sat 10aShowers53°12° (likely 50°10° to 53°12°)53°12°30%, 0.01 in0.3 mm25 mph40 km/h from NW, gusts 29 mph47 km/h68%99%1
Sat 11aShowers53°12° (likely 49°9° to 53°12°)53°12°30%, 0.01 in0.3 mm20 mph32 km/h from NW, gusts 29 mph47 km/h63%94%1
Sat 12pShowers53°12° (likely 49°9° to 53°12°)53°12°20%, 0.01 in0.3 mm20 mph32 km/h from NW, gusts 27 mph43 km/h59%99%2
Sat 1pDrizzle53°12° (likely 48°9° to 53°12°)53°12°20%20 mph32 km/h from NW, gusts 25 mph39 km/h56%97%3
Sat 2pCloudy54°12° (likely 49°9° to 54°12°)54°12°10%15 mph24 km/h from NNW, gusts 22 mph36 km/h54%98%3
Sat 3pCloudy54°12° (likely 50°10° to 54°12°)54°12°10%15 mph24 km/h from NNW, gusts 18 mph28 km/h50%96%2
Sat 4pCloudy55°13° (likely 51°11° to 55°13°)55°13°10%15 mph24 km/h from NNW, gusts 16 mph26 km/h48%94%0
Sat 5pCloudy55°13° (likely 51°11° to 55°13°)55°13°10%10 mph16 km/h from NNW, gusts 15 mph23 km/h47%89%0
Sat 6pCloudy53°12° (likely 51°11° to 54°12°)53°12°10%10 mph16 km/h from NNW, gusts 13 mph21 km/h49%88%0
Sat 7pCloudy51°11° (likely 49°9° to 52°11°)49°9°5%5 mph8 km/h from NNW, gusts 10 mph17 km/h52%90%0
Sat 8pCloudy49°9° (likely 47°8° to 50°10°)47°8°5%5 mph8 km/h from NNW, gusts 8 mph13 km/h54%81%0
Sat 9pMostly cloudy48°9° (likely 46°8° to 49°9°)46°8°0%5 mph8 km/h from NNW, gusts 6 mph10 km/h56%77%0
Sat 10pCloudy48°9° (likely 45°7° to 48°9°)46°8°0%5 mph8 km/h from N, gusts 5 mph9 km/h56%83%0
Sat 11pCloudy47°8° (likely 44°7° to 47°8°)45°7°0%5 mph8 km/h from N, gusts 5 mph8 km/h53%81%0
Sun 12aCloudy45°7° (likely 42°6° to 46°8°)43°6°0%5 mph8 km/h from N, gusts 7 mph11 km/h55%81%0
Sun 1aMostly cloudy45°7° (likely 41°5° to 46°8°)43°6°0%5 mph8 km/h from N, gusts 9 mph15 km/h55%47%0
Sun 2aCloudy44°7° (likely 40°4° to 47°8°)41°5°0%5 mph8 km/h from NNE, gusts 10 mph16 km/h58%60%0
Sun 3aCloudy44°7° (likely 39°4° to 48°9°)41°5°5%5 mph8 km/h from NE, gusts 11 mph17 km/h58%87%0
Sun 4aCloudy43°6° (likely 39°4° to 48°9°)40°4°5%5 mph8 km/h from NE, gusts 13 mph20 km/h60%83%0
Sun 5aCloudy42°6° (likely 38°3° to 48°9°)39°4°10%5 mph8 km/h from ENE, gusts 10 mph16 km/h65%100%0
Sun 6aCloudy41°5° (likely 38°3° to 48°9°)37°3°30%5 mph8 km/h from ENE, gusts 12 mph19 km/h67%100%0
Sun 7aCloudy41°5° (likely 41°5° to 48°9°)37°3°50%, 0.07 in1.8 mm5 mph8 km/h from ENE, gusts 13 mph22 km/h59%100%0
Sun 8aCloudy39°4° (likely 39°4° to 49°9°)34°1°60%, 0.07 in1.8 mm5 mph8 km/h from ENE, gusts 12 mph20 km/h67%99%0
Sun 9aCloudy42°6° (likely 42°6° to 49°9°)38°3°70%, 0.07 in1.8 mm5 mph8 km/h from ENE, gusts 10 mph16 km/h65%100%0
Sun 10aCloudy45°7° (likely 44°7° to 49°9°)41°5°70%, 0.07 in1.8 mm10 mph16 km/h from ENE, gusts 15 mph25 km/h68%100%1
Sun 11aDrizzle46°8° (likely 44°7° to 49°9°)42°6°70%, 0.07 in1.8 mm10 mph16 km/h from ENE, gusts 14 mph23 km/h65%100%1
Sun 12pCloudy46°8° (likely 44°7° to 49°9°)41°5°70%, 0.07 in1.8 mm10 mph16 km/h from ENE, gusts 16 mph25 km/h65%100%0
Sun 1pShowers46°8° (likely 44°7° to 48°9°)41°5°70%, 0.09 in2.3 mm10 mph16 km/h from ENE, gusts 14 mph22 km/h65%100%0
Sun 2pShowers47°8° (likely 45°7° to 48°9°)43°6°60%, 0.09 in2.3 mm10 mph16 km/h from ENE, gusts 14 mph22 km/h63%100%0
Sun 3pShowers47°8° (likely 44°7° to 47°8°)43°6°60%, 0.09 in2.3 mm10 mph16 km/h from NE, gusts 15 mph24 km/h63%100%0
Sun 4pShowers47°8° (likely 45°7° to 47°8°)42°6°50%, 0.09 in2.3 mm10 mph16 km/h from NE, gusts 17 mph27 km/h63%100%0
Sun 5pCloudy48°9° (likely 44°7° to 48°9°)43°6°40%, 0.09 in2.3 mm10 mph16 km/h from NE, gusts 19 mph31 km/h60%100%0
Sun 6pCloudy49°9° (likely 43°6° to 49°9°)45°7°50%, 0.09 in2.3 mm10 mph16 km/h from ENE, gusts 18 mph29 km/h61%100%0
Sun 7pCloudy46°8° (likely 42°6° to 46°8°)41°5°90%, 0.08 in2 mm10 mph16 km/h from NE, gusts 17 mph28 km/h68%100%0
Sun 8pCloudy44°7° (likely 41°5° to 45°7°)38°3°90%, 0.08 in2 mm10 mph16 km/h from ENE, gusts 17 mph28 km/h76%100%0
Sun 9pCloudy43°6° (likely 41°5° to 45°7°)37°3°90%, 0.08 in2 mm10 mph16 km/h from ENE, gusts 20 mph32 km/h79%100%0
Sun 10pRain42°6° (likely 41°5° to 44°7°)36°2°90%, 0.08 in2 mm10 mph16 km/h from ENE, gusts 22 mph36 km/h82%100%0
Sun 11pDrizzle42°6° (likely 41°5° to 43°6°)36°2°90%, 0.08 in2 mm10 mph16 km/h from ENE, gusts 20 mph32 km/h82%100%0
Mon 12aDrizzle42°6° (likely 42°6° to 43°6°)36°2°90%, 0.08 in2 mm10 mph16 km/h from NE, gusts 21 mph33 km/h82%100%0
Mon 1aShowers42°6° (likely 41°5° to 44°7°)36°2°90%, 0.16 in4.1 mm10 mph16 km/h from NE, gusts 21 mph34 km/h82%100%0
Mon 2aShowers41°5° (likely 41°5° to 44°7°)34°1°90%, 0.16 in4.1 mm15 mph24 km/h from NE, gusts 23 mph37 km/h86%100%0
Mon 3aShowers40°4° (likely 40°4° to 44°7°)33°1°90%, 0.16 in4.1 mm15 mph24 km/h from ENE, gusts 24 mph38 km/h89%100%0
Mon 4aShowers39°4° (likely 39°4° to 44°7°)31°−1°90%, 0.16 in4.1 mm15 mph24 km/h from ENE, gusts 23 mph37 km/h92%100%0
Mon 5aShowers38°3° (likely 38°3° to 44°7°)30°−1°90%, 0.16 in4.1 mm15 mph24 km/h from ENE, gusts 25 mph40 km/h96%100%0
Mon 6aRain37°3° (likely 37°3° to 44°7°)28°−2°90%, 0.16 in4.1 mm15 mph24 km/h from ENE, gusts 25 mph41 km/h100%100%0
Mon 7aRain36°2° (likely 36°2° to 44°7°)27°−3°90%, 0.34 in8.6 mm15 mph24 km/h from ENE, gusts 26 mph42 km/h100%100%0

Days ahead

Shaded: typical range for these dates (1991–2020)
  1. Today, Oct 24. Drizzle. High 59°15°, low 38°3°. Typical 52°11° / 32°0°. Rain 0.07 in1.8 mm, 40% chance. Mostly agree.
    1. Morning

      6 AM–noon

      Showers, 57°14°

      40% chance · 0.04 in1 mm

    2. Afternoon

      noon–6 PM

      Showers, 55°13°

      20% chance · 0.01 in0.3 mm

    3. Evening

      6 PM–midnight

      Mostly cloudy, 49°9°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 42°6°

      Dry

    Official NWS forecast

    Today: Scattered rain showers before 2pm. Mostly cloudy. High near 59, with temperatures falling to around 55 in the afternoon. Northwest wind 10 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

    Tonight: Mostly cloudy. Low around 38, with temperatures rising to around 42 overnight. North northeast wind 5 to 10 mph.

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

    High, likely
    59°15°–68°20°
    Low, likely
    38°3°–47°8°
    Typical high / low
    52°11° / 32°0°
    Wind
    21 mph34 km/h, gusts 37 mph59 km/h
    UV peak
    3
  2. Tomorrow, Oct 25. Rain. High 50°10°, low 35°2°. Typical 52°11° / 32°0°. Rain 0.18 in4.6 mm, 70% chance. Mostly agree.
    1. Morning

      6 AM–noon

      Drizzle, 39°4°

      70% chance · 0.35 in8.9 mm

    2. Afternoon

      noon–6 PM

      Showers, 48°9°

      70% chance · 0.52 in13 mm

    3. Evening

      6 PM–midnight

      Rain, 44°7°

      90% chance · 0.49 in12 mm

    4. Overnight

      midnight–6 AM

      Showers, 38°3°

      90% chance · 0.88 in22 mm

    Official NWS forecast

    Day: Rain showers likely. Cloudy, with a high near 50. East northeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

    Night: Rain showers. Cloudy. Low around 35, with temperatures rising to around 38 overnight. Northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

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

    High, likely
    45°7°–50°10°
    Low, likely
    35°2°–43°6°
    Typical high / low
    52°11° / 32°0°
    Wind
    14 mph22 km/h, gusts 24 mph38 km/h
  3. Monday, Oct 26. Showers. High 47°8°, low 36°2°. Typical 51°11° / 31°−1°. Rain 1.1 in27 mm, 90% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Rain, 42°5°

      100% chance · 0.77 in20 mm

    2. Afternoon

      noon–6 PM

      Rain, 43°6°

      100% chance · 0.32 in8.2 mm

    3. Evening

      6 PM–midnight

      Rain, 44°7°

      100% chance · 0.24 in6.2 mm

    4. Overnight

      midnight–6 AM

      Drizzle, 43°6°

      90% chance · 0.06 in1.4 mm

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Rain showers. Cloudy, with a high near 47. East northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

    Night: Rain showers. Cloudy, with a low around 36. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

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

    High, likely
    43°6°–49°9°
    Low, likely
    36°2°–43°6°
    Typical high / low
    51°11° / 31°−1°
    Wind
    22 mph35 km/h, gusts 37 mph60 km/h
  4. Tuesday, Oct 27. Showers. High 54°12°, low 41°5°. Typical 51°11° / 30°−1°. Rain 0.17 in4.3 mm, 60% chance. Mostly agree.
    1. Morning

      6 AM–noon

      Cloudy, 42°5°

      30% chance

    2. Afternoon

      noon–6 PM

      Partly sunny, 54°12°

      Dry

    3. Evening

      6 PM–midnight

      Drizzle, 52°11°

      30% chance · 0.08 in2 mm

    4. Overnight

      midnight–6 AM

      Clear, 45°7°

      30% chance

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Rain showers likely. Mostly cloudy, with a high near 54. Chance of precipitation is 60%.

    Night: A chance of rain showers. Mostly cloudy, with a low around 41. Chance of precipitation is 50%.

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

    High, likely
    53°12°–58°14°
    Low, likely
    40°4°–43°6°
    Typical high / low
    51°11° / 30°−1°
    Wind
    18 mph29 km/h, gusts 33 mph53 km/h
    UV peak
    4
  5. Wednesday, Oct 28. Mostly sunny. High 59°15°, low 36°2°. Typical 50°10° / 30°−1°. Rain 0.02 in0.5 mm, 50% chance. Forecasts agree.
    1. Morning

      6 AM–noon

      Sunny, 43°6°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 59°15°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 50°10°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 43°6°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: A chance of rain showers before 7am. Mostly sunny, with a high near 59. Chance of precipitation is 50%.

    Night: Mostly clear, with a low around 36.

    Forecasts agreeIndependent forecasts are close; the range is narrow.

    High, likely
    58°14°–61°16°
    Low, likely
    36°2°–45°7°
    Typical high / low
    50°10° / 30°−1°
    Wind
    17 mph27 km/h, gusts 34 mph54 km/h
    UV peak
    4
  6. Thursday, Oct 29. Partly sunny. High 59°15°, low 41°5°. Typical 50°10° / 30°−1°. Dry. Mostly agree.
    1. Morning

      6 AM–noon

      Mostly sunny, 43°6°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 61°16°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 53°12°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 51°10°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Mostly sunny, with a high near 59.

    Night: Partly cloudy, with a low around 41.

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

    High, likely
    59°15°–63°17°
    Low, likely
    38°3°–45°7°
    Typical high / low
    50°10° / 30°−1°
    Wind
    13 mph21 km/h, gusts 30 mph49 km/h
    UV peak
    3
  7. Friday, Oct 30. Showers. High 60°16°, low 41°5°. Typical 49°9° / 29°−2°. Rain 0.13 in3.3 mm, 20% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 52°11°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 65°18°

      Dry

    3. Evening

      6 PM–midnight

      Rain, 60°16°

      20% chance · 0.13 in3.4 mm

    4. Overnight

      midnight–6 AM

      Drizzle, 58°14°

      30% chance · 0.06 in1.5 mm

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: A slight chance of rain showers after 7am. Partly sunny, with a high near 60.

    Night: A chance of rain showers. Mostly cloudy, with a low around 41. Chance of precipitation is 30%.

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

    High, likely
    60°16°–70°21°
    Low, likely
    41°5°–53°12°
    Typical high / low
    49°9° / 29°−2°
    Wind
    17 mph28 km/h, gusts 36 mph58 km/h
    UV peak
    1
  8. Saturday, Oct 31. Drizzle. High 62°17°, low 54°12°. Typical 48°9° / 29°−2°. Rain 0.21 in5.3 mm, 40% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 59°15°

      30% chance

    2. Afternoon

      noon–6 PM

      Cloudy, 64°18°

      40% chance · 0.03 in0.8 mm

    3. Evening

      6 PM–midnight

      Cloudy, 61°16°

      40% chance · 0.03 in0.7 mm

    4. Overnight

      midnight–6 AM

      Drizzle, 56°13°

      30% chance · 0.02 in0.6 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
    55°13°–69°21°
    Low, likely
    45°7°–59°15°
    Typical high / low
    48°9° / 29°−2°
    Wind
    20 mph32 km/h, gusts 37 mph59 km/h
  9. Sunday, Nov 1. Drizzle. High 58°14°, low 47°8°. Typical 48°9° / 28°−2°. Rain 0.24 in6.1 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Drizzle, 53°11°

      20% chance · 0.03 in0.8 mm

    2. Afternoon

      noon–6 PM

      Drizzle, 53°12°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 50°10°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 44°7°

      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°–63°17°
    Low, likely
    41°5°–58°14°
    Typical high / low
    48°9° / 28°−2°
    Wind
    28 mph45 km/h, gusts 48 mph78 km/h
  10. Monday, Nov 2. Partly sunny. High 56°13°, low 44°7°. Typical 47°8° / 28°−2°. Rain 0.08 in2 mm, 20% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Sunny, 44°7°

      Dry

    2. Afternoon

      noon–6 PM

      Drizzle, 53°12°

      20% chance · 0.06 in1.5 mm

    3. Evening

      6 PM–midnight

      Drizzle, 52°11°

      20% chance · 0.08 in1.9 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
    51°11°–60°16°
    Low, likely
    38°3°–54°12°
    Typical high / low
    47°8° / 28°−2°
    Wind
    23 mph36 km/h, gusts 44 mph71 km/h
    UV peak
    3

The outlook

  1. Today

    37% chance of rain, high 59°, low 38°.

  2. Tomorrow

    74% chance of rain, high 50°, low 35°, cooling off.

  3. Monday

    92% chance of rain, high 47°, low 36°, cooling off.

  4. Rest of week

    Highs 54–62°; chance of precipitation on Tuesday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (FSD) (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

James River at Huron

17 mi
Below flood stage
Level
9.4 ft
Flow
295 cfs

Reading from Sat 7 AM · NWS gauge page

Vermillion River at Lake Thompson

22 mi
Below flood stage
Level
1687 ft

Reading from Sat 7 AM · NWS gauge page

For your home

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

Heating this week

About 78% less heating than a typical week.

This week 37Typical 171

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F
31
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 10 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 43°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?

De Smet · official normals 1991–2020 · records 1893–2026

Oct 24, today vs a typical year

Today’s expected high is 7°4° warmer than typical.

Normal high / low
52°11° / 32°0°
Forecast high / low
59°15° / 38°3°
Record high
80°27° in 1989
Record low
16°−9° in 1987

Last 7 days vs normal

On average 10°5° warmer than normal (daily mean temperature).

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

Iroquois weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Sunrise 7:58 AM, sunset 6:32 PM.

Daylight
10 h 34 min
Losing 2 min 49 s a day; shortest Dec 21, 1 h 44 min less
Golden hour
5:51–6:50 PM
Morning 7:39–8:38 AM
Blue hour
6:50–7:02 PM
Morning 7:28–7:39 AM; first light 7:28 AM

Stars tonight? Poor

Clouds most of the night (about 82% cover).

Moon

Waxing gibbous

97% lit · growing

Today
sets 6:11 AM · rises 5:31 PM
Full moon
Oct 25
New moon
Nov 9
Looking west from Iroquois. A level horizon.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.