Observed 8:05 AM MDT at KLVM

Corwin Springs, MT weather

Sunny and 19°−7°.

Forecasts differ

Now 19°−7°

Sunny

Wind: Calm; Up to 7 mph11 km/h through 8 PM
Dew point: 18°−8°; Dry · up to 30°−1° by 1 PM
Humidity: 93%; Air 19°−7°, dew point 18°−8° · frost likely
UV index: 0Low; Moderate 12–5 PM · peak 4
Pressure: 30.37 inHg1028 hPa; Falling slowly · −0.02 inHg−0.8 hPa in 3 h

Light snow now, through the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Hard freeze until 11 AM (low 22°−6°)
Above 40°4° today by noon
Hard freeze tonight 1–10 AM (low 26°−3°)
Drops 12°7° tomorrow 5–8 PM (50°10° → 38°3°)
Hard freeze tomorrow night from 11 PM (low 27°−3°)

This morningUp to 37°3° by 11 AM · freezing, low 22°−6° · Clear
This afternoonUp to 49°9° by 3 PM · Clear
TonightDown to 28°−2° by 5 AM · freezing, low 28°−2° · Clear
Tomorrow morningUp to 44°7° by 11 AM · freezing, low 26°−3° · Clear
Tomorrow afternoonUp to 53°12° by 3 PM · Clear
Tomorrow nightDown to 27°−3° by 5 AM · freezing, low 27°−3° · Partly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 8a	Mostly sunny	22°−6° (likely 21°−6° to 30°−1°)	22°−6°	0%	1 mph2 km/h from SSE, gusts 4 mph7 km/h	90%	32%	0
Sat 9a	Mostly sunny	24°−4° (likely 23°−5° to 31°−1°)	24°−4°	0%	2 mph3 km/h from S, gusts 5 mph7 km/h	83%	15%	0
Sat 10a	Sunny	32°0° (likely 27°−3° to 34°1°)	29°−2°	0%	3 mph5 km/h from S, gusts 6 mph10 km/h	63%	14%	1
Sat 11a	Sunny	37°3° (likely 32°0° to 39°4°)	32°0°	0%	6 mph10 km/h from SSE, gusts 8 mph12 km/h	55%	16%	2
Sat 12p	Sunny	41°5° (likely 36°2° to 43°6°)	36°2°	0%	7 mph11 km/h from SSE, gusts 10 mph16 km/h	52%	14%	3
Sat 1p	Sunny	45°7° (likely 39°4° to 48°9°)	42°6°	0%	6 mph10 km/h from SSE, gusts 11 mph18 km/h	56%	14%	4
Sat 2p	Sunny	47°8° (likely 41°5° to 51°11°)	45°7°	0%	5 mph8 km/h from SSE, gusts 12 mph20 km/h	50%	14%	4
Sat 3p	Sunny	49°9° (likely 43°6° to 53°12°)	48°9°	0%	3 mph5 km/h from SSE, gusts 12 mph19 km/h	46%	18%	4
Sat 4p	Sunny	49°9° (likely 43°6° to 54°12°)	48°9°	0%	3 mph5 km/h from SE, gusts 9 mph15 km/h	46%	18%	3
Sat 5p	Sunny	48°9° (likely 42°6° to 53°12°)	47°8°	0%	3 mph5 km/h from ESE, gusts 10 mph17 km/h	47%	17%	2
Sat 6p	Clear	45°7° (likely 40°4° to 49°9°)	45°7°	0%	2 mph3 km/h from NNW, gusts 9 mph14 km/h	52%	16%	1
Sat 7p	Clear	41°5° (likely 36°2° to 45°7°)	41°5°	0%	2 mph3 km/h from NNW, gusts 5 mph8 km/h	64%	12%	0
Sat 8p	Clear	36°2° (likely 33°1° to 43°6°)	36°2°	0%	2 mph3 km/h from WNW, gusts 7 mph11 km/h	67%	10%	0
Sat 9p	Clear	36°2° (likely 31°−1° to 42°6°)	33°1°	0%	3 mph5 km/h from SSW, gusts 6 mph10 km/h	67%	9%	0
Sat 10p	Clear	34°1° (likely 29°−2° to 40°4°)	31°−1°	0%	3 mph5 km/h from S, gusts 5 mph8 km/h	68%	2%	0
Sat 11p	Clear	33°1° (likely 28°−2° to 39°4°)	30°−1°	0%	3 mph5 km/h from SE, gusts 3 mph6 km/h	71%	0%	0
Sun 12a	Clear	33°1° (likely 27°−3° to 39°4°)	30°−1°	0%	3 mph5 km/h from SSE, gusts 3 mph5 km/h	71%	2%	0
Sun 1a	Clear	31°−1° (likely 26°−3° to 38°3°)	31°−1°	0%	2 mph3 km/h from SSE, gusts 3 mph5 km/h	77%	6%	0
Sun 2a	Clear	30°−1° (likely 26°−3° to 37°3°)	30°−1°	0%	2 mph3 km/h from S, gusts 5 mph8 km/h	77%	4%	0
Sun 3a	Clear	30°−1° (likely 26°−3° to 37°3°)	30°−1°	0%	2 mph3 km/h from S, gusts 5 mph7 km/h	77%	1%	0
Sun 4a	Clear	30°−1° (likely 26°−3° to 37°3°)	30°−1°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	75%	1%	0
Sun 5a	Clear	28°−2° (likely 26°−3° to 36°2°)	28°−2°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	81%	1%	0
Sun 6a	Clear	27°−3° (likely 26°−3° to 36°2°)	27°−3°	0%	1 mph2 km/h from N, gusts 4 mph7 km/h	85%	2%	0
Sun 7a	Clear	26°−3° (likely 26°−3° to 34°1°)	26°−3°	0%	1 mph2 km/h from N, gusts 5 mph8 km/h	91%	2%	0
Sun 8a	Sunny	26°−3° (likely 26°−3° to 34°1°)	26°−3°	0%	1 mph2 km/h from N, gusts 6 mph10 km/h	89%	0%	0
Sun 9a	Sunny	28°−2° (likely 28°−2° to 35°2°)	28°−2°	0%	0 mph0 km/h, gusts 6 mph9 km/h	84%	0%	0
Sun 10a	Sunny	38°3° (likely 33°1° to 42°6°)	38°3°	0%	0 mph0 km/h, gusts 5 mph8 km/h	64%	0%	1
Sun 11a	Sunny	44°7° (likely 38°3° to 46°8°)	44°7°	0%	0 mph0 km/h, gusts 6 mph9 km/h	54%	7%	2
Sun 12p	Sunny	48°9° (likely 42°6° to 49°9°)	48°9°	0%	2 mph3 km/h from N, gusts 7 mph11 km/h	51%	0%	3
Sun 1p	Sunny	51°11° (likely 45°7° to 52°11°)	51°11°	0%	2 mph3 km/h from N, gusts 8 mph13 km/h	51%	4%	4
Sun 2p	Sunny	52°11° (likely 46°8° to 54°12°)	52°11°	0%	2 mph3 km/h from N, gusts 10 mph16 km/h	46%	0%	4
Sun 3p	Sunny	53°12° (likely 46°8° to 55°13°)	53°12°	0%	5 mph8 km/h from NNW, gusts 11 mph18 km/h	42%	0%	4
Sun 4p	Sunny	51°11° (likely 45°7° to 55°13°)	51°11°	0%	5 mph8 km/h from NNW, gusts 11 mph18 km/h	44%	0%	3
Sun 5p	Sunny	50°10° (likely 42°6° to 54°12°)	48°9°	0%	5 mph8 km/h from NNW, gusts 11 mph18 km/h	48%	0%	2
Sun 6p	Clear	45°7° (likely 39°4° to 49°9°)	44°7°	0%	3 mph5 km/h from N, gusts 9 mph14 km/h	58%	0%	1
Sun 7p	Clear	38°3° (likely 36°2° to 45°7°)	36°2°	0%	3 mph5 km/h from N, gusts 10 mph16 km/h	67%	2%	0
Sun 8p	Clear	36°2° (likely 33°1° to 42°6°)	33°1°	0%	3 mph5 km/h from N, gusts 10 mph15 km/h	68%	22%	0
Sun 9p	Mostly clear	35°2° (likely 31°−1° to 40°4°)	35°2°	0%	1 mph2 km/h from S, gusts 8 mph12 km/h	66%	33%	0
Sun 10p	Mostly clear	34°1° (likely 30°−1° to 39°4°)	34°1°	0%	1 mph2 km/h from S, gusts 6 mph10 km/h	68%	44%	0
Sun 11p	Clear	32°0° (likely 29°−2° to 38°3°)	32°0°	0%	1 mph2 km/h from S, gusts 6 mph10 km/h	70%	41%	0
Mon 12a	Partly cloudy	32°0° (likely 28°−2° to 37°3°)	32°0°	0%	2 mph3 km/h from SSE, gusts 7 mph11 km/h	71%	45%	0
Mon 1a	Partly cloudy	30°−1° (likely 29°−2° to 36°2°)	30°−1°	0%	2 mph3 km/h from SSE, gusts 7 mph11 km/h	77%	50%	0
Mon 2a	Partly cloudy	29°−2° (likely 29°−2° to 37°3°)	29°−2°	0%	2 mph3 km/h from SSE, gusts 7 mph11 km/h	78%	51%	0
Mon 3a	Mostly clear	29°−2° (likely 29°−2° to 37°3°)	26°−3°	0%	3 mph5 km/h from S, gusts 7 mph12 km/h	77%	53%	0
Mon 4a	Mostly clear	28°−2° (likely 28°−2° to 37°3°)	25°−4°	0%	3 mph5 km/h from S, gusts 8 mph13 km/h	79%	50%	0
Mon 5a	Mostly clear	27°−3° (likely 27°−3° to 37°3°)	24°−4°	0%	3 mph5 km/h from S, gusts 9 mph14 km/h	82%	43%	0
Mon 6a	Partly cloudy	27°−3° (likely 27°−3° to 37°3°)	23°−5°	0%	3 mph5 km/h from SSE, gusts 10 mph15 km/h	84%	43%	0
Mon 7a	Clear	27°−3° (likely 27°−3° to 39°4°)	23°−5°	0%	3 mph5 km/h from SSE, gusts 12 mph19 km/h	85%	26%	0

Days ahead

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

Today, Oct 24. Mostly sunny. High 49°9°, low 26°−3°. Typical 50°10° / 26°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 22°−6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 49°9°
  Dry
3. Evening
  6 PM–midnight
  Clear, 36°2°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 28°−2°
  Dry
Official NWS forecast
Today: Sunny, with a high near 49. South southeast wind 1 to 7 mph.
Tonight: Mostly clear. Low around 26, with temperatures rising to around 28 overnight. South wind around 3 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
43°6°–54°12°
Low, likely
21°−6°–29°−2°
Typical high / low
50°10° / 26°−3°
Wind
11 mph18 km/h, gusts 31 mph50 km/h
UV peak
4
Tomorrow, Oct 25. Mostly sunny. High 53°12°, low 26°−3°. Typical 49°9° / 26°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 26°−3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 53°12°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 36°2°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 27°−3°
  Dry
Official NWS forecast
Day: Sunny. High near 53, with temperatures falling to around 50 in the afternoon. North northwest wind 0 to 5 mph.
Night: Mostly clear, with a low around 26. South southeast wind around 3 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
47°8°–55°13°
Low, likely
25°−4°–34°1°
Typical high / low
49°9° / 26°−3°
Wind
12 mph20 km/h
UV peak
4
Monday, Oct 26. Partly sunny. High 55°13°, low 30°−1°. Typical 49°9° / 26°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 54°12°
  Dry
3. Evening
  6 PM–midnight
  Clear, 43°6°
  30% chance · 0.02 in0.4 mm
4. Overnight
  midnight–6 AM
  Cloudy, 39°4°
  60% chance · 0.03 in0.7 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny. High near 55, with temperatures falling to around 51 in the afternoon. South wind 3 to 8 mph.
Night: A slight chance of rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 30. South wind 5 to 8 mph. Chance of precipitation is 50%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
48°9°–56°13°
Low, likely
26°−3°–36°2°
Typical high / low
49°9° / 26°−3°
Wind
9 mph15 km/h, gusts 33 mph53 km/h
UV peak
4
Tuesday, Oct 27. Snow. High 47°8°, low 28°−2°. Typical 48°9° / 25°−4°. Snow 0–2 in0–5 cm, 70% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Rain, 38°3°
  70% chance · 0.1 in0.3 cm
2. Afternoon
  noon–6 PM
  Snow showers, 43°6°
  60% chance · 0.02 in0.6 mm
3. Evening
  6 PM–midnight
  Partly cloudy, 38°3°
  40% chance · 0.02 in0.4 mm
4. Overnight
  midnight–6 AM
  Partly cloudy, 34°1°
  30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain and snow showers likely before 3pm, then rain and snow showers likely. Mostly cloudy. High near 47, with temperatures falling to around 45 in the afternoon. South wind 5 to 10 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Night: A chance of rain and snow showers. Mostly cloudy, with a low around 28. South southwest wind 8 to 12 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
37°3°–47°8°
Low, likely
27°−3°–37°3°
Typical high / low
48°9° / 25°−4°
Wind
10 mph16 km/h, gusts 36 mph57 km/h
UV peak
3
Wednesday, Oct 28. Mostly cloudy. High 52°11°, low 28°−2°. Typical 48°9° / 25°−4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 34°1°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 45°7°
  Dry
3. Evening
  6 PM–midnight
  Clear, 37°3°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 34°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny. High near 52, with temperatures falling to around 49 in the afternoon. South wind around 9 mph.
Night: A slight chance of snow showers after midnight. Partly cloudy. Low around 28, with temperatures rising to around 30 overnight. South wind 6 to 10 mph. Chance of precipitation is 20%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
39°4°–52°11°
Low, likely
26°−3°–36°2°
Typical high / low
48°9° / 25°−4°
Wind
12 mph19 km/h, gusts 34 mph55 km/h
UV peak
4
Thursday, Oct 29. Snow. High 54°12°, low 30°−1°. Typical 47°8° / 25°−4°. Snow 0.04 in1 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 34°1°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 50°10°
  20% chance · 0.02 in0.4 mm
3. Evening
  6 PM–midnight
  Fog, 43°6°
  20% chance · 0.02 in0.5 mm
4. Overnight
  midnight–6 AM
  Cloudy, 39°4°
  30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of snow showers before noon, then a slight chance of rain and snow showers. Mostly sunny. High near 54, with temperatures falling to around 51 in the afternoon. South wind 6 to 9 mph. Chance of precipitation is 20%.
Night: A chance of rain and snow showers. Mostly cloudy, with a low around 30. South wind around 7 mph. Chance of precipitation is 30%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
43°6°–54°12°
Low, likely
24°−4°–37°3°
Typical high / low
47°8° / 25°−4°
Wind
9 mph14 km/h, gusts 33 mph54 km/h
UV peak
3
Friday, Oct 30. Snow. High 55°13°, low 30°−1°. Typical 47°8° / 24°−4°. Snow 0–1 in0–3 cm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 40°4°
  40% chance · 0.02 in0.6 mm
2. Afternoon
  noon–6 PM
  Cloudy, 49°9°
  40% chance · 0.04 in1.1 mm
3. Evening
  6 PM–midnight
  Drizzle, 41°5°
  30% chance · 0.03 in0.8 mm
4. Overnight
  midnight–6 AM
  Drizzle, 37°3°
  30% chance · 0.1 in0.3 cm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of snow showers before 9am, then a chance of rain and snow showers. Partly sunny. High near 55, with temperatures falling to around 52 in the afternoon. South wind around 7 mph. Chance of precipitation is 30%.
Night: A chance of rain and snow showers. Mostly cloudy, with a low around 30. South wind around 7 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
40°4°–55°13°
Low, likely
26°−3°–39°4°
Typical high / low
47°8° / 24°−4°
Wind
12 mph20 km/h, gusts 38 mph61 km/h
UV peak
3
Saturday, Oct 31. Drizzle. High 39°4°, low 27°−3°. Typical 46°8° / 24°−4°. Rain 0.07 in1.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 35°2°
  30% chance
2. Afternoon
  noon–6 PM
  Drizzle, 40°5°
  30% chance · 0.02 in0.6 mm
3. Evening
  6 PM–midnight
  Drizzle, 33°0°
  20% chance
4. Overnight
  midnight–6 AM
  Cloudy, 28°−2°
  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
33°1°–45°7°
Low, likely
19°−7°–31°−1°
Typical high / low
46°8° / 24°−4°
Wind
10 mph16 km/h, gusts 20 mph32 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 41°5°, low 25°−4°. Typical 46°8° / 24°−4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 29°−1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 42°6°
  Dry
3. Evening
  6 PM–midnight
  Clear, 34°1°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 32°0°
  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
33°1°–45°7°
Low, likely
18°−8°–32°0°
Typical high / low
46°8° / 24°−4°
Wind
7 mph11 km/h, gusts 20 mph31 km/h
UV peak
4
Monday, Nov 2. Cloudy. High 42°6°, low 27°−3°. Typical 45°7° / 24°−4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Snow, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 46°8°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 36°2°
  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
35°2°–56°13°
Low, likely
20°−7°–32°0°
Typical high / low
45°7° / 24°−4°
Wind
8 mph12 km/h, gusts 17 mph28 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 49°, low 26°.
Tomorrow
Dry, high 53°, low 26°, warming up.
Monday
Dry, high 55°, low 30°.
Rest of week
Highs 39–55°; chance of precipitation on Tuesday.

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

Yellowstone River at Corwin Springs

1.4 mi

Below flood stage

Level: 1.3 ft
Flow: 1,090 cfs

Reading from Sat 7 AM · NWS gauge page

Gardner River near Mammoth

11 mi

Below flood stage

Level: 1.9 ft
Flow: 148 cfs

Reading from Sat 6:45 AM · NWS gauge page

Boiling River at Mammoth (YNP)

12 mi

Level: 1.1 ft
Flow: 22 cfs

Reading from Sat 6:15 AM · NWS gauge page

Mill Creek near Emigrant

21 mi

Level: 1.5 ft

Reading from Sat 6:15 AM · NWS gauge page

For your home

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

Heating this week

About 72% less heating than a typical week.

This week 56Typical 198

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 38
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 2 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 18°F). Indoor air will run dry too — a humidifier keeping indoor relative humidity in the 30–50% range is more comfortable and cuts static shocks, without going so high it fogs cold windows.

Open the windows?

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

Is this typical?

Yellowstone Park Mammoth · official normals 1991–2020 · records 1894–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

—SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

Corwin Springs weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 32 min; Losing 2 min 58 s a day; shortest Dec 21, 1 h 47 min less
Golden hour: 5:41–6:41 PM; Morning 7:32–8:32 AM
Blue hour: 6:41–6:52 PM; Morning 7:21–7:32 AM; first light 7:21 AM

Stars tonight? Fair

Clear 6:52 PM–7:22 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 6:06 AM · rises 5:23 PM
Full moon: Oct 25
New moon: Nov 9

Looking east from Corwin Springs. The highest point on the skyline is about 10,400 ft, 5 mi away.Skyline from USGS elevation data. Sky, sun and moon as they are now.