Observed 6:50 AM MDT at KRAP

Hermosa, SD weather

Windy and 37°3°.

Forecasts differ

Now 37°3°

Windy · Feels like 26°−3°

Feels like: 26°−3°; Wind chill from 23 mph37 km/h wind · air 37°3°
Wind: 23 mph37 km/h; From the north-northwest. Easing to 13 mph21 km/h by 8 AM
Dew point: 30°−1°; Dry · down to 20°−7° by 12 PM
UV index: 0Low; Moderate 12–3 PM · peak 3
Air quality: 21Good; Main pollutant: Ozone
Pressure (notable): 30.26 inHg1025 hPa; Rising very fast · +0.19 inHg+6.6 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

High 53°12° today at 2 PM
Drizzle tomorrow from noon (90%, 0.64 in16 mm)

This morningUp to 49°9° by 11 AM · Clear
This afternoonNear 50°10° · Clear
TonightDown to 39°4° by 2 AM · Mostly cloudy
Tomorrow morningUp to 41°5° by 10 AM · rain chance 20% · Cloudy
Tomorrow afternoonNear 41°5° · Rain all afternoon (80%)
Tomorrow nightDown to 34°1° by 4 AM · Rain all night (90%)

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 7a	Mostly cloudy	40°4° (likely 40°4° to 44°7°)	33°1°	0%	12 mph19 km/h from NW, gusts 16 mph26 km/h	64%	60%	0
Sat 8a	Sunny	41°5° (likely 41°5° to 44°7°)	33°1°	0%	13 mph21 km/h from N, gusts 17 mph27 km/h	62%	13%	0
Sat 9a	Sunny	45°7° (likely 43°6° to 46°8°)	39°4°	0%	12 mph19 km/h from N, gusts 16 mph25 km/h	52%	1%	0
Sat 10a	Mostly sunny	47°8° (likely 46°8° to 48°9°)	41°5°	0%	12 mph19 km/h from N, gusts 15 mph25 km/h	42%	12%	1
Sat 11a	Sunny	49°9° (likely 48°9° to 51°11°)	44°7°	0%	12 mph19 km/h from N, gusts 13 mph22 km/h	35%	1%	2
Sat 12p	Sunny	50°10° (likely 50°10° to 53°12°)	45°7°	0%	13 mph21 km/h from N, gusts 13 mph20 km/h	30%	1%	3
Sat 1p	Sunny	51°11° (likely 51°11° to 54°12°)	51°11°	0%	14 mph23 km/h from N, gusts 13 mph22 km/h	26%	1%	3
Sat 2p	Sunny	53°12° (likely 52°11° to 54°12°)	53°12°	0%	13 mph21 km/h from N, gusts 14 mph22 km/h	22%	8%	3
Sat 3p	Sunny	53°12° (likely 52°11° to 54°12°)	53°12°	0%	12 mph19 km/h from N, gusts 12 mph20 km/h	20%	17%	2
Sat 4p	Cloudy	52°11° (likely 51°11° to 52°11°)	52°11°	0%	9 mph14 km/h from N, gusts 11 mph18 km/h	20%	67%	1
Sat 5p	Partly sunny	49°9° (likely 49°9° to 51°11°)	46°8°	0%	7 mph11 km/h from NE, gusts 10 mph17 km/h	23%	37%	0
Sat 6p	Clear	47°8° (likely 46°8° to 47°8°)	45°7°	0%	5 mph8 km/h from NE, gusts 9 mph15 km/h	26%	41%	0
Sat 7p	Mostly cloudy	44°7° (likely 43°6° to 45°7°)	42°6°	0%	3 mph5 km/h from N, gusts 8 mph13 km/h	30%	51%	0
Sat 8p	Clear	43°6° (likely 41°5° to 44°7°)	43°6°	0%	2 mph3 km/h from N, gusts 5 mph8 km/h	32%	43%	0
Sat 9p	Clear	42°6° (likely 40°4° to 43°6°)	42°6°	0%	2 mph3 km/h from NW, gusts 6 mph9 km/h	34%	46%	0
Sat 10p	Clear	42°6° (likely 39°4° to 43°6°)	42°6°	0%	2 mph3 km/h from NW, gusts 5 mph8 km/h	34%	46%	0
Sat 11p	Mostly cloudy	41°5° (likely 38°3° to 42°6°)	41°5°	0%	2 mph3 km/h from W, gusts 5 mph7 km/h	36%	65%	0
Sun 12a	Cloudy	41°5° (likely 38°3° to 42°6°)	41°5°	5%	2 mph3 km/h from W, gusts 5 mph9 km/h	37%	77%	0
Sun 1a	Cloudy	40°4° (likely 38°3° to 41°5°)	40°4°	5%	1 mph2 km/h from W, gusts 5 mph8 km/h	41%	82%	0
Sun 2a	Cloudy	39°4° (likely 38°3° to 42°6°)	39°4°	5%	1 mph2 km/h from W, gusts 5 mph8 km/h	44%	96%	0
Sun 3a	Cloudy	39°4° (likely 39°4° to 42°6°)	39°4°	5%	1 mph2 km/h from S, gusts 5 mph8 km/h	46%	87%	0
Sun 4a	Cloudy	39°4° (likely 39°4° to 42°6°)	39°4°	5%	1 mph2 km/h from S, gusts 5 mph8 km/h	48%	96%	0
Sun 5a	Cloudy	39°4° (likely 39°4° to 43°6°)	39°4°	5%	1 mph2 km/h from SE, gusts 7 mph12 km/h	50%	98%	0
Sun 6a	Cloudy	37°3° (likely 37°3° to 43°6°)	37°3°	20%	2 mph3 km/h from SE, gusts 9 mph15 km/h	56%	100%	0
Sun 7a	Cloudy	37°3° (likely 37°3° to 43°6°)	37°3°	20%	2 mph3 km/h from SE, gusts 9 mph15 km/h	61%	100%	0
Sun 8a	Cloudy	38°3° (likely 38°3° to 43°6°)	36°2°	20%	3 mph5 km/h from E, gusts 9 mph14 km/h	64%	100%	0
Sun 9a	Cloudy	40°4° (likely 39°4° to 43°6°)	38°3°	20%	3 mph5 km/h from E, gusts 8 mph13 km/h	67%	100%	0
Sun 10a	Cloudy	41°5° (likely 39°4° to 44°7°)	38°3°	20%	5 mph8 km/h from E, gusts 9 mph14 km/h	70%	100%	0
Sun 11a	Cloudy	41°5° (likely 39°4° to 44°7°)	37°3°	20%	6 mph10 km/h from E, gusts 9 mph14 km/h	76%	100%	0
Sun 12p	Cloudy	41°5° (likely 39°4° to 44°7°)	37°3°	80%, 0.05 in1.3 mm	6 mph10 km/h from E, gusts 10 mph15 km/h	79%	100%	1
Sun 1p	Cloudy	42°6° (likely 39°4° to 44°7°)	38°3°	80%, 0.05 in1.3 mm	7 mph11 km/h from E, gusts 11 mph17 km/h	79%	100%	2
Sun 2p	Cloudy	43°6° (likely 38°3° to 43°6°)	39°4°	80%, 0.05 in1.3 mm	7 mph11 km/h from NE, gusts 11 mph17 km/h	79%	100%	1
Sun 3p	Cloudy	43°6° (likely 38°3° to 43°6°)	39°4°	80%, 0.05 in1.3 mm	7 mph11 km/h from NE, gusts 11 mph17 km/h	76%	100%	0
Sun 4p	Cloudy	42°6° (likely 37°3° to 42°6°)	38°3°	80%, 0.05 in1.3 mm	7 mph11 km/h from NE, gusts 11 mph17 km/h	79%	100%	0
Sun 5p	Cloudy	41°5° (likely 37°3° to 41°5°)	36°2°	80%, 0.05 in1.3 mm	7 mph11 km/h from NE, gusts 11 mph17 km/h	79%	100%	0
Sun 6p	Drizzle	40°4° (likely 37°3° to 40°4°)	35°2°	90%, 0.01 in0.3 mm	7 mph11 km/h from NE, gusts 10 mph17 km/h	85%	100%	0
Sun 7p	Drizzle	38°3° (likely 37°3° to 39°4°)	33°1°	90%, 0.01 in0.3 mm	7 mph11 km/h from NE, gusts 10 mph16 km/h	92%	100%	0
Sun 8p	Snow	37°3° (likely 36°2° to 39°4°)	32°0°	90%, 0.01 in0.3 mm	7 mph11 km/h from NE, gusts 11 mph18 km/h	96%	100%	0
Sun 9p	Snow	37°3° (likely 36°2° to 39°4°)	32°0°	90%, 0.01 in0.3 mm	7 mph11 km/h from NE, gusts 10 mph17 km/h	96%	100%	0
Sun 10p	Snow	37°3° (likely 36°2° to 38°3°)	32°0°	90%, 0.01 in0.3 mm	7 mph11 km/h from NE, gusts 10 mph16 km/h	96%	100%	0
Sun 11p	Drizzle	36°2° (likely 36°2° to 38°3°)	30°−1°	90%, 0.01 in0.3 mm	7 mph11 km/h from NE, gusts 10 mph16 km/h	100%	100%	0
Mon 12a	Drizzle	36°2° (likely 35°2° to 38°3°)	31°−1°	90%, 0.03 in0.8 mm	6 mph10 km/h from NE, gusts 8 mph13 km/h	100%	100%	0
Mon 1a	Drizzle	36°2° (likely 35°2° to 38°3°)	31°−1°	90%, 0.03 in0.8 mm	6 mph10 km/h from NE, gusts 9 mph15 km/h	96%	100%	0
Mon 2a	Drizzle	35°2° (likely 35°2° to 37°3°)	30°−1°	90%, 0.03 in0.8 mm	6 mph10 km/h from NE, gusts 10 mph16 km/h	100%	100%	0
Mon 3a	Drizzle	35°2° (likely 34°1° to 37°3°)	30°−1°	90%, 0.03 in0.8 mm	6 mph10 km/h from NE, gusts 11 mph17 km/h	96%	100%	0
Mon 4a	Snow	34°1° (likely 34°1° to 37°3°)	30°−1°	90%, 0.03 in0.8 mm	5 mph8 km/h from NE, gusts 10 mph16 km/h	96%	100%	0
Mon 5a	Snow	34°1° (likely 34°1° to 37°3°)	30°−1°	90%, 0.03 in0.8 mm	5 mph8 km/h from NE, gusts 9 mph15 km/h	92%	100%	0
Mon 6a	Snow	34°1° (likely 34°1° to 37°3°)	29°−2°	70%, 0.1 in2.5 mm	6 mph10 km/h from NE, gusts 11 mph17 km/h	92%	100%	0

Days ahead

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

Today, Oct 24. Cloudy. High 54°12°, low 36°2°. Typical 52°11° / 34°1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 53°12°
  Dry
3. Evening
  6 PM–midnight
  Clear, 43°6°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 39°4°
  Dry
Official NWS forecast
Today: Mostly sunny. High near 54, with temperatures falling to around 49 in the afternoon. North wind 7 to 14 mph, with gusts as high as 26 mph.
Tonight: Mostly cloudy. Low around 36, with temperatures rising to around 39 overnight. Northwest wind 1 to 5 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
54°12°–62°17°
Low, likely
36°2°–42°6°
Typical high / low
52°11° / 34°1°
Wind
20 mph32 km/h, gusts 32 mph51 km/h
UV peak
4
Tomorrow, Oct 25. Drizzle. High 44°7°, low 33°1°. Typical 52°11° / 34°1°. Rain 0.07 in1.8 mm, 80% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 38°3°
  20% chance
2. Afternoon
  noon–6 PM
  Cloudy, 43°6°
  80% chance · 0.3 in7.6 mm
3. Evening
  6 PM–midnight
  Snow, 37°3°
  90% chance · 0.06 in1.5 mm
4. Overnight
  midnight–6 AM
  Snow, 34°1°
  90% chance · 0.18 in4.6 mm
Official NWS forecast
Day: A slight chance of snow before 9am, then rain. Cloudy. High near 44, with temperatures falling to around 41 in the afternoon. East wind 2 to 7 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.
Night: Rain before 8pm, then rain and snow between 8pm and 5am, then rain and snow. Cloudy, with a low around 33. Northeast wind around 7 mph, with gusts as high as 17 mph. Chance of precipitation is 90%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
41°5°–44°7°
Low, likely
33°1°–38°3°
Typical high / low
52°11° / 34°1°
Wind
10 mph16 km/h, gusts 17 mph28 km/h
UV peak
2
Monday, Oct 26. Snow. High 41°5°, low 33°1°. Typical 51°11° / 33°1°. Snow 0–5 in0–13 cm, 70% chance. Mostly agree.
1. Morning
  6 AM–noon
  Snow, 34°1°
  90% chance · 1.1 in2.8 cm
2. Afternoon
  noon–6 PM
  Snow, 35°2°
  90% chance · 0.3 in0.7 cm
3. Evening
  6 PM–midnight
  Fog, 32°0°
  50% chance
4. Overnight
  midnight–6 AM
  Fog, 32°0°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain and snow likely before 7am, then rain and snow likely. Cloudy. High near 41, with temperatures falling to around 38 in the afternoon. Northeast wind around 6 mph, with gusts as high as 17 mph. Chance of precipitation is 70%.
Night: A slight chance of rain before midnight. Mostly cloudy, with a low around 33. Southeast wind around 6 mph. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
35°2°–41°5°
Low, likely
30°−1°–33°1°
Typical high / low
51°11° / 33°1°
Wind
11 mph17 km/h, gusts 19 mph30 km/h
UV peak
1
Tuesday, Oct 27. Partly sunny. High 57°14°, low 36°2°. Typical 51°11° / 33°1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Fog, 35°1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 44°7°
  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 57.
Night: Partly cloudy, with a low around 36.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–64°18°
Low, likely
29°−2°–36°2°
Typical high / low
51°11° / 33°1°
Wind
20 mph32 km/h, gusts 45 mph72 km/h
UV peak
3
Wednesday, Oct 28. Mostly sunny. High 60°16°, low 34°1°. Typical 51°11° / 33°1°. Dry. Mostly agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Sunny, 40°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 60°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 45°7°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 41°5°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 60.
Night: Partly cloudy, with a low around 34.
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 60°16°).
High, likely
59°15°–61°16°
Low, likely
34°1°–39°4°
Typical high / low
51°11° / 33°1°
Wind
11 mph17 km/h, gusts 28 mph45 km/h
UV peak
3
Thursday, Oct 29. Partly sunny. High 60°16°, low 37°3°. Typical 50°10° / 32°0°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 43°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 60.
Night: Partly cloudy, with a low around 37.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–68°20°
Low, likely
37°3°–42°6°
Typical high / low
50°10° / 32°0°
Wind
12 mph19 km/h, gusts 25 mph40 km/h
UV peak
4
Friday, Oct 30. Cloudy. High 58°14°, low 38°3°. Typical 50°10° / 32°0°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 62°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 58.
Night: A slight chance of rain. Partly cloudy, with a low around 38.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–67°19°
Low, likely
38°3°–46°8°
Typical high / low
50°10° / 32°0°
Wind
19 mph31 km/h
UV peak
3
Saturday, Oct 31. Drizzle. High 56°13°, low 43°6°. Typical 50°10° / 32°0°. Rain 0.06 in1.5 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  20% chance
2. Afternoon
  noon–6 PM
  Cloudy, 57°14°
  20% chance
3. Evening
  6 PM–midnight
  Partly cloudy, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Drizzle, 40°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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
51°11°–65°18°
Low, likely
39°4°–48°9°
Typical high / low
50°10° / 32°0°
Wind
20 mph31 km/h, gusts 32 mph51 km/h
UV peak
2
Sunday, Nov 1. Drizzle. High 51°11°, low 38°3°. Typical 49°9° / 31°−1°. Rain 0.14 in3.6 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 51°10°
  Dry
3. Evening
  6 PM–midnight
  Clear, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 38°3°
  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°–60°16°
Low, likely
29°−2°–48°9°
Typical high / low
49°9° / 31°−1°
Wind
20 mph33 km/h, gusts 31 mph50 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 54°12°, low 38°3°. Typical 49°9° / 31°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 53°12°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 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
49°9°–64°18°
Low, likely
36°2°–40°4°
Typical high / low
49°9° / 31°−1°
Wind
11 mph17 km/h, gusts 22 mph36 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 54°, low 36°.
Tomorrow
75% chance of rain, high 44°, low 33°, cooling off.
Monday
74% chance of snow, high 41°, low 33°, cooling off.
Rest of week
Mostly dry, highs 51–60°.

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

Battle Creek (SD) at Hermosa

0.9 mi

Below flood stage

Level: 2.6 ft
Flow: 6 cfs

Reading from Sat 5 AM · NWS gauge page

Battle Creek (SD) near Keystone

7.6 mi

Below flood stage

Level: 3.3 ft
Flow: under 1 cfs

Reading from Sat 5:15 AM · NWS gauge page

Grace Coolidge Creek near Custer

10 mi

Below flood stage

Level: 6.7 ft
Flow: 1 cfs

Reading from Sat 5 AM · NWS gauge page

French Creek (SD) above Fairburn

12 mi

Level: 0.6 ft
Flow: 3 cfs

Reading from Sat 5:15 AM · NWS gauge page

For your home

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

Heating this week

About 71% less heating than a typical week.

This week 46Typical 161

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 40
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 13 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 30°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?

Mount Rushmore National Memorial · official normals 1991–2020 · records 1962–2026

Oct 24, today vs a typical year

Today’s expected high is 2°1° warmer than typical.

Last 7 days vs normal

On average 15°8° warmer than normal (daily mean temperature).

+8°+4°SunOct 18
+4°+2°MonOct 19
+18°+10°TueOct 20
+17°+9°WedOct 21
+21°+11°ThuOct 22
+21°+12°FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 36 min; Losing 2 min 49 s a day; shortest Dec 21, 1 h 41 min less
Golden hour: 5:14–6:12 PM; Morning 7:00–7:58 AM
Blue hour: 6:12–6:23 PM; Morning 6:49–7:00 AM; first light 6:49 AM

Stars tonight? Poor

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

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:33 AM · rises 4:54 PM
Full moon: Oct 25
New moon: Nov 9

Looking west from Hermosa. The highest point on the skyline is about 7,100 ft, 17 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Hermosa, SD weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Battle Creek (SD) at Hermosa

Battle Creek (SD) near Keystone

Grace Coolidge Creek near Custer

French Creek (SD) above Fairburn

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