Observed 1:15 PM CDT at K9V9

Spring Valley Colony, SD weather

Overcast and 50°10°, rain tomorrow ~7 AM–6 PM (94%).

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 6 PM
Dew point: 35°2°; Dry, static shocks likely
UV tomorrow: 0Low; Low all day (peak 0)

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

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

Good hours for

Dry until 7 AM tomorrow
Below 50°10° tonight after 8 PM
Rain tomorrow from 7 AM (100%, 6.7 in170 mm)
Low 38°3° tomorrow at 8 AM
Gusts to 30 mph48 km/h Monday from 7 AM

This afternoonNear 55°13° · rain chance 10% · Cloudy
TonightDown to 40°4° by 5 AM · rain chance 20% · Mostly cloudy
Tomorrow morningUp to 45°7° by 11 AM · Rain 7 AM–noon (90%)
Tomorrow afternoonNear 45°7° · Rain all afternoon (90%)
Tomorrow nightDown to 37°3° by 5 AM · Rain all night (100%)
Monday morningUp to 42°6° by 11 AM · Rain all morning (100%) · gusts to 30 mph48 km/h

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 2p	Cloudy	55°13° (likely 51°11° to 55°13°)	55°13°	10%	15 mph24 km/h from NNW, gusts 21 mph33 km/h	49%	93%	2
Sat 3p	Cloudy	55°13° (likely 51°11° to 55°13°)	55°13°	5%	15 mph24 km/h from NNW, gusts 17 mph28 km/h	47%	83%	1
Sat 4p	Cloudy	54°12° (likely 51°11° to 54°12°)	54°12°	5%	15 mph24 km/h from NNW, gusts 16 mph26 km/h	47%	92%	1
Sat 5p	Cloudy	54°12° (likely 51°11° to 54°12°)	54°12°	5%	10 mph16 km/h from N, gusts 14 mph22 km/h	47%	84%	0
Sat 6p	Cloudy	53°12° (likely 50°10° to 53°12°)	53°12°	5%	5 mph8 km/h from N, gusts 10 mph17 km/h	46%	82%	0
Sat 7p	Cloudy	50°10° (likely 48°9° to 51°11°)	48°9°	0%	5 mph8 km/h from N, gusts 8 mph13 km/h	52%	83%	0
Sat 8p	Cloudy	48°9° (likely 46°8° to 49°9°)	46°8°	0%	5 mph8 km/h from N, gusts 6 mph10 km/h	54%	82%	0
Sat 9p	Cloudy	46°8° (likely 44°7° to 47°8°)	45°7°	0%	5 mph8 km/h from N, gusts 6 mph10 km/h	58%	83%	0
Sat 10p	Cloudy	46°8° (likely 43°6° to 46°8°)	45°7°	0%	5 mph8 km/h from N, gusts 5 mph8 km/h	58%	81%	0
Sat 11p	Mostly cloudy	44°7° (likely 42°6° to 45°7°)	42°6°	0%	5 mph8 km/h from N, gusts 6 mph9 km/h	60%	54%	0
Sun 12a	Clear	44°7° (likely 41°5° to 44°7°)	42°6°	0%	5 mph8 km/h from NNE, gusts 7 mph11 km/h	58%	39%	0
Sun 1a	Clear	43°6° (likely 40°4° to 44°7°)	41°5°	0%	5 mph8 km/h from NNE, gusts 6 mph10 km/h	57%	39%	0
Sun 2a	Mostly cloudy	42°6° (likely 39°4° to 44°7°)	39°4°	0%	5 mph8 km/h from NE, gusts 7 mph12 km/h	57%	55%	0
Sun 3a	Cloudy	42°6° (likely 39°4° to 45°7°)	39°4°	5%	5 mph8 km/h from NE, gusts 8 mph12 km/h	57%	91%	0
Sun 4a	Cloudy	42°6° (likely 39°4° to 45°7°)	38°3°	10%	5 mph8 km/h from NE, gusts 10 mph16 km/h	57%	99%	0
Sun 5a	Cloudy	40°4° (likely 39°4° to 45°7°)	36°2°	20%	5 mph8 km/h from ENE, gusts 8 mph13 km/h	64%	98%	0
Sun 6a	Cloudy	40°4° (likely 40°4° to 45°7°)	36°2°	20%	5 mph8 km/h from ENE, gusts 8 mph13 km/h	64%	100%	0
Sun 7a	Cloudy	40°4° (likely 40°4° to 45°7°)	36°2°	60%, 0.07 in1.8 mm	5 mph8 km/h from ENE, gusts 10 mph17 km/h	70%	100%	0
Sun 8a	Cloudy	38°3° (likely 38°3° to 45°7°)	34°1°	70%, 0.07 in1.8 mm	5 mph8 km/h from ENE, gusts 10 mph15 km/h	79%	100%	0
Sun 9a	Cloudy	40°4° (likely 40°4° to 46°8°)	36°2°	70%, 0.07 in1.8 mm	5 mph8 km/h from ENE, gusts 11 mph17 km/h	85%	100%	0
Sun 10a	Drizzle	44°7° (likely 43°6° to 46°8°)	40°4°	90%, 0.07 in1.8 mm	5 mph8 km/h from ENE, gusts 11 mph17 km/h	79%	100%	0
Sun 11a	Drizzle	45°7° (likely 43°6° to 46°8°)	41°5°	90%, 0.07 in1.8 mm	10 mph16 km/h from ENE, gusts 13 mph22 km/h	82%	100%	0
Sun 12p	Drizzle	45°7° (likely 42°6° to 46°8°)	40°4°	70%, 0.07 in1.8 mm	10 mph16 km/h from ENE, gusts 16 mph25 km/h	82%	100%	0
Sun 1p	Rain	45°7° (likely 42°6° to 46°8°)	40°4°	80%, 0.08 in2 mm	10 mph16 km/h from ENE, gusts 18 mph29 km/h	82%	100%	0
Sun 2p	Drizzle	46°8° (likely 42°6° to 46°8°)	41°5°	90%, 0.08 in2 mm	10 mph16 km/h from ENE, gusts 19 mph30 km/h	79%	100%	0
Sun 3p	Drizzle	45°7° (likely 41°5° to 45°7°)	39°4°	80%, 0.08 in2 mm	10 mph16 km/h from ENE, gusts 17 mph27 km/h	82%	100%	0
Sun 4p	Showers	45°7° (likely 41°5° to 45°7°)	39°4°	80%, 0.08 in2 mm	15 mph24 km/h from NE, gusts 20 mph33 km/h	79%	100%	0
Sun 5p	Drizzle	45°7° (likely 40°4° to 45°7°)	39°4°	70%, 0.08 in2 mm	15 mph24 km/h from ENE, gusts 22 mph36 km/h	82%	100%	0
Sun 6p	Rain	44°7° (likely 40°4° to 44°7°)	37°3°	70%, 0.08 in2 mm	15 mph24 km/h from ENE, gusts 21 mph33 km/h	89%	100%	0
Sun 7p	Drizzle	41°5° (likely 40°4° to 43°6°)	34°1°	40%, 0.07 in1.8 mm	15 mph24 km/h from ENE, gusts 20 mph32 km/h	100%	100%	0
Sun 8p	Showers	39°4° (likely 39°4° to 43°6°)	31°−1°	50%, 0.07 in1.8 mm	15 mph24 km/h from ENE, gusts 22 mph35 km/h	100%	100%	0
Sun 9p	Showers	39°4° (likely 39°4° to 42°6°)	31°−1°	60%, 0.07 in1.8 mm	15 mph24 km/h from ENE, gusts 22 mph35 km/h	100%	100%	0
Sun 10p	Showers	39°4° (likely 39°4° to 42°6°)	31°−1°	60%, 0.07 in1.8 mm	15 mph24 km/h from NE, gusts 21 mph34 km/h	100%	100%	0
Sun 11p	Showers	39°4° (likely 39°4° to 42°6°)	31°−1°	50%, 0.07 in1.8 mm	15 mph24 km/h from ENE, gusts 21 mph33 km/h	100%	100%	0
Mon 12a	Showers	39°4° (likely 39°4° to 42°6°)	31°−1°	80%, 0.07 in1.8 mm	15 mph24 km/h from ENE, gusts 20 mph32 km/h	100%	100%	0
Mon 1a	Showers	39°4° (likely 39°4° to 42°6°)	31°−1°	90%, 0.45 in11 mm	15 mph24 km/h from ENE, gusts 20 mph33 km/h	100%	100%	0
Mon 2a	Showers	38°3° (likely 38°3° to 42°6°)	30°−1°	100%, 0.45 in11 mm	15 mph24 km/h from ENE, gusts 21 mph34 km/h	100%	100%	0
Mon 3a	Showers	38°3° (likely 38°3° to 42°6°)	30°−1°	100%, 0.45 in11 mm	15 mph24 km/h from ENE, gusts 21 mph34 km/h	100%	100%	0
Mon 4a	Showers	38°3° (likely 38°3° to 42°6°)	29°−2°	100%, 0.45 in11 mm	15 mph24 km/h from ENE, gusts 22 mph35 km/h	100%	100%	0
Mon 5a	Rain	37°3° (likely 37°3° to 42°6°)	28°−2°	80%, 0.45 in11 mm	15 mph24 km/h from ENE, gusts 22 mph36 km/h	100%	100%	0
Mon 6a	Rain	36°2° (likely 36°2° to 42°6°)	26°−3°	90%, 0.45 in11 mm	15 mph24 km/h from ENE, gusts 23 mph37 km/h	100%	100%	0
Mon 7a	Showers	37°3° (likely 37°3° to 42°6°)	27°−3°	100%, 0.38 in9.7 mm	15 mph24 km/h from ENE, gusts 25 mph40 km/h	100%	100%	0
Mon 8a	Rain	34°1° (likely 34°1° to 43°6°)	23°−5°	100%, 0.38 in9.7 mm	20 mph32 km/h from ENE, gusts 26 mph42 km/h	100%	100%	0
Mon 9a	Showers	37°3° (likely 37°3° to 43°6°)	27°−3°	100%, 0.38 in9.7 mm	20 mph32 km/h from ENE, gusts 28 mph45 km/h	100%	100%	0
Mon 10a	Showers	41°5° (likely 39°4° to 43°6°)	32°0°	100%, 0.38 in9.7 mm	20 mph32 km/h from ENE, gusts 30 mph49 km/h	100%	100%	0
Mon 11a	Rain	42°6° (likely 39°4° to 43°6°)	33°1°	100%, 0.38 in9.7 mm	20 mph32 km/h from ENE, gusts 29 mph46 km/h	100%	100%	0
Mon 12p	Rain	42°6° (likely 39°4° to 44°7°)	33°1°	100%, 0.38 in9.7 mm	20 mph32 km/h from ENE, gusts 29 mph47 km/h	100%	100%	0
Mon 1p	Rain	42°6° (likely 40°4° to 44°7°)	33°1°	100%, 0.4 in10 mm	20 mph32 km/h from ENE, gusts 29 mph47 km/h	100%	100%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Mostly cloudy. High 57°14°, low 38°3°. Typical 56°13° / 28°−2°. Dry. Mostly agree.
1. Afternoon
  noon–6 PM
  Cloudy, 55°13°
  Dry
2. Evening
  6 PM–midnight
  Cloudy, 48°9°
  Dry
3. Overnight
  midnight–6 AM
  Cloudy, 40°4°
  Dry
Official NWS forecast
Today: Mostly cloudy. High near 57, with temperatures falling to around 54 in the afternoon. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight: A slight chance of rain showers after 5am. Mostly cloudy, with a low around 38. North northeast wind around 5 mph. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
57°14°–68°20°
Low, likely
38°3°–45°7°
Typical high / low
56°13° / 28°−2°
Wind
23 mph36 km/h, gusts 42 mph68 km/h
UV peak
2
Tomorrow, Oct 25. Rain. High 47°8°, low 33°1°. Typical 55°13° / 28°−2°. Rain 0.39 in9.9 mm, 90% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 38°3°
  90% chance · 0.35 in8.9 mm
2. Afternoon
  noon–6 PM
  Rain, 46°8°
  90% chance · 0.47 in12 mm
3. Evening
  6 PM–midnight
  Rain, 39°4°
  70% chance · 0.43 in11 mm
4. Overnight
  midnight–6 AM
  Rain, 37°3°
  100% chance · 2.3 in59 mm
Official NWS forecast
Day: Rain showers. Cloudy, with a high near 47. East northeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Night: Rain showers. Cloudy. Low around 33, with temperatures rising to around 37 overnight. East northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
44°7°–47°8°
Low, likely
33°1°–42°6°
Typical high / low
55°13° / 28°−2°
Wind
15 mph24 km/h, gusts 25 mph41 km/h
Monday, Oct 26. Showers. High 45°7°, low 33°1°. Typical 55°13° / 27°−3°. Rain 1.1 in29 mm, 100% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Rain, 34°1°
  100% chance · 2.3 in60 mm
2. Afternoon
  noon–6 PM
  Rain, 43°6°
  100% chance · 1.1 in28 mm
3. Evening
  6 PM–midnight
  Rain, 44°7°
  100% chance · 0.27 in6.7 mm
4. Overnight
  midnight–6 AM
  Cloudy, 40°5°
  70% chance · 0.11 in2.7 mm
Official NWS forecast
Day: Rain showers. Cloudy, with a high near 45. East northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.
Night: Rain showers. Cloudy, with a low around 33. North northwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
42°6°–48°9°
Low, likely
33°1°–42°6°
Typical high / low
55°13° / 27°−3°
Wind
21 mph34 km/h, gusts 34 mph55 km/h
UV peak
1
Tuesday, Oct 27. Showers. High 55°13°, low 38°3°. Typical 54°12° / 27°−3°. Rain 0.19 in4.8 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 53°12°
  Dry
3. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°5°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers. Partly sunny, with a high near 55.
Night: A slight chance of rain showers before 7pm. Partly cloudy, with a low around 38.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
53°12°–57°14°
Low, likely
37°3°–40°4°
Typical high / low
54°12° / 27°−3°
Wind
21 mph33 km/h, gusts 31 mph50 km/h
UV peak
4
Wednesday, Oct 28. Mostly sunny. High 61°16°, low 39°4°. Typical 54°12° / 26°−3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 58°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 61.
Night: Partly cloudy, with a low around 39.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
56°13°–61°16°
Low, likely
36°2°–43°6°
Typical high / low
54°12° / 26°−3°
Wind
13 mph20 km/h, gusts 39 mph62 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 63°17°, low 44°7°. Typical 53°12° / 26°−3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 42°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 60°15°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 52°11°
  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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–63°17°
Low, likely
38°3°–44°7°
Typical high / low
53°12° / 26°−3°
Wind
14 mph22 km/h, gusts 34 mph55 km/h
UV peak
3
Friday, Oct 30. Mostly cloudy. High 64°18°, low 45°7°. Typical 53°12° / 25°−4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 56°13°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers after 1pm. Partly sunny, with a high near 64.
Night: A chance of rain showers. Mostly cloudy, with a low around 45. Chance of precipitation is 40%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–69°21°
Low, likely
45°7°–52°11°
Typical high / low
53°12° / 25°−4°
Wind
13 mph22 km/h, gusts 40 mph64 km/h
UV peak
3
Saturday, Oct 31. Drizzle. High 56°13°, low 49°9°. Typical 52°11° / 25°−4°. Rain 0.25 in6.4 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 56°13°
  30% chance · 0.02 in0.5 mm
2. Afternoon
  noon–6 PM
  Drizzle, 58°15°
  30% chance · 0.19 in4.7 mm
3. Evening
  6 PM–midnight
  Drizzle, 53°12°
  20% chance · 0.1 in2.6 mm
4. Overnight
  midnight–6 AM
  Partly cloudy, 46°8°
  20% chance · 0.03 in0.8 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
49°9°–64°18°
Low, likely
40°4°–59°15°
Typical high / low
52°11° / 25°−4°
Wind
16 mph25 km/h, gusts 36 mph58 km/h
UV peak
1
Sunday, Nov 1. Drizzle. High 53°12°, low 44°7°. Typical 52°11° / 25°−4°. Rain 0.08 in2 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 53°12°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°5°
  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
45°7°–65°18°
Low, likely
36°2°–56°13°
Typical high / low
52°11° / 25°−4°
Wind
17 mph27 km/h, gusts 47 mph76 km/h
UV peak
2
Monday, Nov 2. Sunny. High 55°13°, low 41°5°. Typical 51°11° / 24°−4°. Rain 0.07 in1.8 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  20% chance
2. Afternoon
  noon–6 PM
  Sunny, 56°13°
  30% chance · 0.02 in0.5 mm
3. Evening
  6 PM–midnight
  Clear, 50°10°
  30% chance · 0.04 in1 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
51°11°–58°14°
Low, likely
38°3°–49°9°
Typical high / low
51°11° / 24°−4°
Wind
17 mph28 km/h, gusts 41 mph66 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 57°, low 38°.
Tomorrow
94% chance of rain, high 47°, low 33°, cooling off.
Monday
99% chance of rain, high 45°, low 33°.
Rest of week
Mostly dry, highs 53–64°.

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

Elm Creek (SD) near Gann Valley

14 mi

Below flood stage

Level: 3.5 ft
Flow: 18 cfs

Reading from Sat 11:45 AM · NWS gauge page

For your home

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

Heating this week

About 74% less heating than a typical week.

This week 44Typical 172

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 20 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?

Gann Valley 3 Nne · official normals 1991–2020 · records 2009–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

On average 12°7° warmer than normal (daily mean temperature).

+6°+3°SunOct 18
+6°+3°MonOct 19
+8°+4°TueOct 20
+11°+6°WedOct 21
+13°+7°ThuOct 22
+19°+10°FriOct 23
+22°+12°SatOct 24

Spring Valley Colony weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 35 min; Losing 2 min 49 s a day; shortest Dec 21, 1 h 42 min less
Golden hour: 5:56–6:55 PM; Morning 7:43–8:42 AM
Blue hour: 6:55–7:06 PM; Morning 7:32–7:43 AM; first light 7:32 AM

Stars tonight? Poor

Clouds most of the night (about 77% cover).

Moon

Waxing gibbous

97% lit · growing

Today: sets 6:15 AM · rises 5:36 PM
Full moon: Oct 25
New moon: Nov 9

Looking west from Spring Valley Colony. The highest point on the skyline is about 5,200 ft, 29 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.