Observed 11:15 AM MDT at KW43

St. Onge, SD weather

Sunny and 39°4°.

Forecasts agree

Now 39°4°

Sunny · Feels like 34°1°

Wind: 7 mph11 km/h; From the north. 58–9 mph14 km/h through 12 AM
Dew point: 23°−5°; Dry · down to 15°−9° by 3 PM
UV index: 3Moderate; Moderate until 3 PM

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Dry until tomorrow noon
High 48°9° today at 3 PM
Low 36°2° tomorrow at 7 AM
Rain tomorrow from noon (70%, 0.54 in14 mm)
Gusts to 25 mph40 km/h tomorrow 1–2 PM

This afternoonUp to 48°9° by 3 PM · Clear
TonightDown to 38°3° by 2 AM · Mostly cloudy
Tomorrow morningUp to 41°5° by 11 AM · rain chance 20% · Cloudy
Tomorrow afternoonNear 41°5° · Rain all afternoon (60%) · gusts to 25 mph40 km/h
Tomorrow nightDown to 35°2° by 4 AM · Rain all night (70%)
Monday morningNear 35°2° · Rain all morning (50%)

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 12p	Sunny	43°6° (likely 43°6° to 46°8°)	37°3°	0%	10 mph16 km/h from NW, gusts 17 mph27 km/h	45%	0%	3
Sat 1p	Sunny	45°7° (likely 45°7° to 48°9°)	40°4°	0%	9 mph14 km/h from NW, gusts 13 mph21 km/h	33%	0%	3
Sat 2p	Sunny	47°8° (likely 47°8° to 50°10°)	44°7°	0%	7 mph11 km/h from NW, gusts 9 mph14 km/h	28%	1%	3
Sat 3p	Sunny	48°9° (likely 48°9° to 50°10°)	45°7°	0%	7 mph11 km/h from NW, gusts 6 mph10 km/h	26%	5%	2
Sat 4p	Cloudy	47°8° (likely 47°8° to 50°10°)	44°7°	0%	6 mph10 km/h from N, gusts 8 mph12 km/h	26%	62%	1
Sat 5p	Partly sunny	45°7° (likely 45°7° to 49°9°)	44°7°	0%	6 mph10 km/h from NE, gusts 10 mph16 km/h	27%	54%	0
Sat 6p	Cloudy	44°7° (likely 43°6° to 45°7°)	41°5°	0%	5 mph8 km/h from NE, gusts 11 mph18 km/h	29%	69%	0
Sat 7p	Cloudy	42°6° (likely 42°6° to 43°6°)	38°3°	0%	6 mph10 km/h from E, gusts 11 mph18 km/h	32%	72%	0
Sat 8p	Cloudy	41°5° (likely 41°5° to 43°6°)	36°2°	0%	7 mph11 km/h from SE, gusts 11 mph18 km/h	33%	75%	0
Sat 9p	Cloudy	41°5° (likely 40°4° to 43°6°)	36°2°	0%	8 mph13 km/h from SE, gusts 12 mph20 km/h	33%	77%	0
Sat 10p	Partly cloudy	41°5° (likely 39°4° to 43°6°)	36°2°	0%	7 mph11 km/h from SE, gusts 11 mph18 km/h	33%	70%	0
Sat 11p	Cloudy	40°4° (likely 39°4° to 43°6°)	35°2°	0%	7 mph11 km/h from SE, gusts 13 mph21 km/h	36%	73%	0
Sun 12a	Clear	40°4° (likely 37°3° to 42°6°)	36°2°	5%	6 mph10 km/h from SE, gusts 13 mph21 km/h	36%	29%	0
Sun 1a	Partly cloudy	39°4° (likely 36°2° to 42°6°)	35°2°	5%	6 mph10 km/h from SE, gusts 13 mph21 km/h	39%	75%	0
Sun 2a	Cloudy	38°3° (likely 35°2° to 42°6°)	34°1°	5%	6 mph10 km/h from SE, gusts 13 mph20 km/h	42%	77%	0
Sun 3a	Partly cloudy	38°3° (likely 35°2° to 42°6°)	34°1°	5%	6 mph10 km/h from SE, gusts 12 mph20 km/h	42%	75%	0
Sun 4a	Cloudy	38°3° (likely 35°2° to 42°6°)	34°1°	5%	6 mph10 km/h from SE, gusts 13 mph20 km/h	44%	60%	0
Sun 5a	Cloudy	38°3° (likely 34°1° to 43°6°)	34°1°	5%	5 mph8 km/h from SE, gusts 12 mph19 km/h	44%	71%	0
Sun 6a	Cloudy	37°3° (likely 35°2° to 44°7°)	32°0°	20%	6 mph10 km/h from SE, gusts 13 mph22 km/h	48%	96%	0
Sun 7a	Cloudy	36°2° (likely 36°2° to 45°7°)	30°−1°	20%	7 mph11 km/h from SE, gusts 14 mph23 km/h	52%	97%	0
Sun 8a	Cloudy	37°3° (likely 37°3° to 44°7°)	31°−1°	20%	8 mph13 km/h from E, gusts 12 mph19 km/h	56%	94%	0
Sun 9a	Cloudy	39°4° (likely 39°4° to 44°7°)	32°0°	20%	10 mph16 km/h from E, gusts 17 mph28 km/h	59%	100%	0
Sun 10a	Cloudy	40°4° (likely 40°4° to 45°7°)	33°1°	20%	13 mph21 km/h from E, gusts 19 mph30 km/h	62%	100%	0
Sun 11a	Cloudy	41°5° (likely 39°4° to 47°8°)	33°1°	20%	14 mph23 km/h from E, gusts 22 mph36 km/h	65%	100%	1
Sun 12p	Cloudy	41°5° (likely 38°3° to 48°9°)	33°1°	60%, 0.03 in0.8 mm	14 mph23 km/h from E, gusts 24 mph39 km/h	67%	100%	1
Sun 1p	Cloudy	42°6° (likely 38°3° to 47°8°)	34°1°	60%, 0.03 in0.8 mm	15 mph24 km/h from E, gusts 25 mph41 km/h	67%	100%	1
Sun 2p	Cloudy	43°6° (likely 38°3° to 46°8°)	36°2°	60%, 0.03 in0.8 mm	15 mph24 km/h from E, gusts 25 mph40 km/h	67%	100%	1
Sun 3p	Cloudy	43°6° (likely 37°3° to 44°7°)	36°2°	60%, 0.03 in0.8 mm	15 mph24 km/h from E, gusts 25 mph39 km/h	70%	100%	0
Sun 4p	Drizzle	43°6° (likely 37°3° to 44°7°)	35°2°	60%, 0.03 in0.8 mm	16 mph26 km/h from E, gusts 24 mph39 km/h	70%	100%	0
Sun 5p	Drizzle	41°5° (likely 36°2° to 42°6°)	33°1°	60%, 0.03 in0.8 mm	16 mph26 km/h from E, gusts 23 mph37 km/h	76%	100%	0
Sun 6p	Rain	39°4° (likely 36°2° to 41°5°)	31°−1°	70%, 0.03 in0.8 mm	15 mph24 km/h from E, gusts 23 mph36 km/h	82%	100%	0
Sun 7p	Rain	38°3° (likely 36°2° to 41°5°)	29°−2°	70%, 0.03 in0.8 mm	15 mph24 km/h from E, gusts 22 mph35 km/h	85%	100%	0
Sun 8p	Drizzle	38°3° (likely 35°2° to 40°4°)	29°−2°	70%, 0.03 in0.8 mm	15 mph24 km/h from E, gusts 22 mph35 km/h	85%	100%	0
Sun 9p	Drizzle	38°3° (likely 35°2° to 39°4°)	30°−1°	70%, 0.03 in0.8 mm	14 mph23 km/h from E, gusts 21 mph34 km/h	85%	100%	0
Sun 10p	Rain	38°3° (likely 35°2° to 39°4°)	30°−1°	70%, 0.03 in0.8 mm	14 mph23 km/h from E, gusts 21 mph34 km/h	85%	100%	0
Sun 11p	Snow	37°3° (likely 35°2° to 38°3°)	29°−2°	70%, 0.03 in0.8 mm	13 mph21 km/h from E, gusts 22 mph35 km/h	85%	100%	0
Mon 12a	Rain	37°3° (likely 34°1° to 38°3°)	29°−2°	30%, 0.01 in0.3 mm	13 mph21 km/h from E, gusts 21 mph34 km/h	85%	100%	0
Mon 1a	Rain	37°3° (likely 34°1° to 38°3°)	29°−2°	30%, 0.01 in0.3 mm	13 mph21 km/h from E, gusts 20 mph32 km/h	85%	100%	0
Mon 2a	Rain	36°2° (likely 34°1° to 37°3°)	28°−2°	30%, 0.01 in0.3 mm	13 mph21 km/h from E, gusts 20 mph32 km/h	89%	98%	0
Mon 3a	Rain	36°2° (likely 34°1° to 37°3°)	28°−2°	30%, 0.01 in0.3 mm	13 mph21 km/h from E, gusts 20 mph32 km/h	89%	99%	0
Mon 4a	Snow	35°2° (likely 34°1° to 37°3°)	26°−3°	30%, 0.01 in0.3 mm	13 mph21 km/h from E, gusts 20 mph32 km/h	92%	99%	0
Mon 5a	Snow	35°2° (likely 34°1° to 37°3°)	26°−3°	30%, 0.01 in0.3 mm	13 mph21 km/h from E, gusts 20 mph32 km/h	89%	99%	0
Mon 6a	Snow	34°1° (likely 34°1° to 36°2°)	26°−3°	50%, 0.02 in0.5 mm	12 mph19 km/h from E, gusts 19 mph30 km/h	92%	97%	0
Mon 7a	Snow	34°1° (likely 34°1° to 37°3°)	26°−3°	50%, 0.02 in0.5 mm	12 mph19 km/h from E, gusts 16 mph26 km/h	92%	100%	0
Mon 8a	Snow	35°2° (likely 34°1° to 36°2°)	26°−3°	50%, 0.02 in0.5 mm	13 mph21 km/h from E, gusts 15 mph25 km/h	92%	97%	0
Mon 9a	Snow	35°2° (likely 35°2° to 36°2°)	26°−3°	50%, 0.02 in0.5 mm	13 mph21 km/h from E, gusts 16 mph25 km/h	96%	100%	0
Mon 10a	Snow	36°2° (likely 34°1° to 36°2°)	28°−2°	50%, 0.02 in0.5 mm	13 mph21 km/h from E, gusts 16 mph25 km/h	96%	99%	0
Mon 11a	Snow	36°2° (likely 34°1° to 36°2°)	28°−2°	50%, 0.02 in0.5 mm	13 mph21 km/h from E, gusts 15 mph24 km/h	96%	100%	0

Days ahead

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

Today, Oct 24. Cloudy. High 48°9°, low 36°2°. Typical 54°12° / 32°0°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Sunny, 48°9°
  Dry
2. Evening
  6 PM–midnight
  Cloudy, 41°5°
  Dry
3. Overnight
  midnight–6 AM
  Partly cloudy, 38°3°
  Dry
Official NWS forecast
Today: Sunny. High near 48, with temperatures falling to around 45 in the afternoon. North wind 6 to 10 mph, with gusts as high as 21 mph.
Tonight: Mostly cloudy. Low around 36, with temperatures rising to around 38 overnight. Southeast wind 5 to 8 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
48°9°–50°10°
Low, likely
36°2°–38°3°
Typical high / low
54°12° / 32°0°
Wind
28 mph44 km/h, gusts 45 mph72 km/h
UV peak
4
Tomorrow, Oct 25. Snow. High 44°7°, low 34°1°. Typical 54°12° / 32°0°. Snow 0.1 in2.5 mm, 60% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 37°3°
  20% chance
2. Afternoon
  noon–6 PM
  Drizzle, 43°6°
  60% chance · 0.18 in4.6 mm
3. Evening
  6 PM–midnight
  Snow, 38°3°
  70% chance · 0.18 in4.6 mm
4. Overnight
  midnight–6 AM
  Snow, 35°2°
  30% chance · 0.06 in1.5 mm
Official NWS forecast
Day: A slight chance of snow before 9am, then rain likely. Cloudy. High near 44, with temperatures falling to around 41 in the afternoon. Southeast wind 6 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Night: Rain likely before 11pm, then rain and snow likely. Cloudy, with a low around 34. East wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
42°6°–48°9°
Low, likely
33°1°–37°3°
Typical high / low
54°12° / 32°0°
Wind
18 mph29 km/h, gusts 28 mph45 km/h
UV peak
1
Monday, Oct 26. Snow. High 40°4°, low 32°0°. Typical 53°12° / 32°0°. Snow 0–3 in0–8 cm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Snow, 35°2°
  50% chance · 0.12 in3 mm
2. Afternoon
  noon–6 PM
  Snow, 35°2°
  80% chance · 0.9 in2.3 cm
3. Evening
  6 PM–midnight
  Snow, 32°0°
  50% chance
4. Overnight
  midnight–6 AM
  Fog, 31°−1°
  Dry
Official NWS forecast
Day: A chance of snow before 8am, then a chance of rain and snow between 8am and 9am, then a chance of rain and snow. Cloudy, with a high near 40. East wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.
Night: Mostly cloudy, with a low around 32. East wind 7 to 14 mph, with gusts as high as 24 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
35°2°–40°4°
Low, likely
30°−1°–32°0°
Typical high / low
53°12° / 32°0°
Wind
16 mph25 km/h, gusts 23 mph37 km/h
Tuesday, Oct 27. Partly sunny. High 53°12°, low 39°4°. Typical 53°12° / 32°0°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 33°0°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 55°13°
  Dry
3. Evening
  6 PM–midnight
  Clear, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 36°2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 53.
Night: A slight chance of rain before midnight. Partly cloudy, with a low around 39.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
50°10°–60°16°
Low, likely
27°−3°–39°4°
Typical high / low
53°12° / 32°0°
Wind
31 mph50 km/h, gusts 49 mph80 km/h
UV peak
4
Wednesday, Oct 28. Mostly sunny. High 53°12°, low 35°2°. Typical 52°11° / 31°−1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 40°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 58°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 43°6°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 53.
Night: Partly cloudy, with a low around 35.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
53°12°–60°16°
Low, likely
34°1°–39°4°
Typical high / low
52°11° / 31°−1°
Wind
9 mph14 km/h, gusts 49 mph78 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 55°13°, low 38°3°. Typical 52°11° / 31°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 55.
Night: Partly cloudy, with a low around 38.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–66°19°
Low, likely
33°1°–40°4°
Typical high / low
52°11° / 31°−1°
Wind
10 mph17 km/h, gusts 34 mph54 km/h
UV peak
3
Friday, Oct 30. Partly sunny. High 55°13°, low 39°4°. Typical 52°11° / 31°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 56°13°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 44°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 55.
Night: A slight chance of rain after midnight. Partly cloudy, with a low around 39.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
49°9°–66°19°
Low, likely
36°2°–51°11°
Typical high / low
52°11° / 31°−1°
Wind
16 mph25 km/h, gusts 30 mph48 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 47°8°, low 37°3°. Typical 51°11° / 30°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 44°7°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 38°3°
  20% chance
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
36°2°–60°16°
Low, likely
31°−1°–42°6°
Typical high / low
51°11° / 30°−1°
Wind
20 mph32 km/h, gusts 27 mph44 km/h
UV peak
3
Sunday, Nov 1. Fog. High 47°8°, low 36°2°. Typical 51°11° / 30°−1°. Rain 0.03 in0.8 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 47°8°
  Dry
3. Evening
  6 PM–midnight
  Clear, 42°5°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 39°4°
  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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
45°7°–52°11°
Low, likely
27°−3°–44°7°
Typical high / low
51°11° / 30°−1°
Wind
26 mph41 km/h, gusts 41 mph65 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 53°12°, low 38°3°. Typical 51°11° / 30°−1°. Rain 0.12 in3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 53°12°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 45°7°
  20% chance
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
33°1°–42°6°
Typical high / low
51°11° / 30°−1°
Wind
15 mph24 km/h, gusts 31 mph50 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 48°, low 36°.
Tomorrow
57% chance of snow, high 44°, low 34°, cooling off.
Monday
49% chance of snow, high 40°, low 32°, cooling off.
Rest of week
Mostly dry, highs 47–55°.

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

Whitewood Creek near Whitewood

7.3 mi

Below flood stage

Level: 5.5 ft
Flow: 10 cfs

Reading from Sat 10:15 AM · NWS gauge page

Spearfish Creek at Spearfish

8.2 mi

Below flood stage

Level: 4.8 ft
Flow: 34 cfs

Reading from Sat 11 AM · NWS gauge page

Whitewood Creek above Whitewood

8.4 mi

Below flood stage

Level: 0.2 ft
Flow: 5 cfs

Reading from Sat 10:50 AM · NWS gauge page

Spearfish Creek below Spearfish

8.6 mi

Below flood stage

Level: 3306 ft

Reading from Sat 10:15 AM · NWS gauge page

For your home

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

Heating this week

About 68% less heating than a typical week.

This week 50Typical 160

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 46
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 18 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 23°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?

SPEARFISH · official normals 1991–2020 · records 1893–2026

Oct 24, today vs a typical year

Today’s expected high is 6°3° colder than typical.

Last 7 days vs normal

On average 2°1° warmer than normal (daily mean temperature).

−1°SunOct 18
−4°−2°MonOct 19
+12°+6°TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

St. Onge weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 34 min; Losing 2 min 53 s a day; shortest Dec 21, 1 h 44 min less
Golden hour: 5:14–6:13 PM; Morning 7:03–8:02 AM
Blue hour: 6:13–6:25 PM; Morning 6:52–7:03 AM; first light 6:52 AM

Stars tonight? Poor

Clouds most of the night (about 71% cover).

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:36 AM · rises 4:55 PM
Full moon: Oct 25
New moon: Nov 9

Looking southwest from St. Onge. The highest point on the skyline is about 7,000 ft, 16 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

St. Onge, SD weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Whitewood Creek near Whitewood

Spearfish Creek at Spearfish

Whitewood Creek above Whitewood

Spearfish Creek below Spearfish

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Poor

Moon