Observed 4:55 AM MDT at K1KM

Shawmut, MT weather

Clear and 28°−2°, 9°5° colder than a typical Oct 24.

Forecasts agree

Now 28°−2°

Clear · Feels like 17°−8°

Feels like: 17°−8°; Wind chill from 13 mph21 km/h wind · air 28°−2°
Wind: 13 mph21 km/h; From the north-northwest. 58–13 mph21 km/h through 6 PM
Dew point: 23°−5°; Dry, static shocks likely
UV tomorrow: 4Moderate; Moderate 12–4 PM · peak 4
Pressure: 30.29 inHg1026 hPa; Rising · +0.04 inHg+1.5 hPa in 3 h

None rain now, through the next 2 hours.

From forecast models

Next 48 hours

15°8° cooler than this time yesterday (43°6° then, 28°−2° now)

Good hours for

Hard freeze until 11 AM (low 24°−4°)
Above 40°4° today by 1 PM
Below 40°4° tonight after 7 PM
Hard freeze tonight 9 PM–11 AM (low 24°−4°)
Hard freeze tomorrow night from 9 PM (low 27°−3°)

This morningUp to 36°2° by 11 AM · freezing, low 24°−4° · Clear
This afternoonUp to 47°8° by 4 PM · Clear
TonightDown to 25°−4° by 5 AM · freezing, low 25°−4° · Clear
Tomorrow morningUp to 36°2° by 11 AM · freezing, low 24°−4° · Clear
Tomorrow afternoonUp to 44°7° by 3 PM · Clear
Tomorrow nightDown to 27°−3° by 5 AM · freezing, low 27°−3° · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 6a	Clear	24°−4° (likely 24°−4° to 32°0°)	15°−9°	0%	9 mph14 km/h from NW, gusts 12 mph19 km/h	89%	0%	0
Sat 7a	Clear	24°−4° (likely 24°−4° to 32°0°)	15°−9°	0%	8 mph13 km/h from WNW, gusts 10 mph16 km/h	91%	0%	0
Sat 8a	Sunny	24°−4° (likely 24°−4° to 32°0°)	16°−9°	0%	7 mph11 km/h from W, gusts 5 mph8 km/h	92%	0%	0
Sat 9a	Sunny	26°−3° (likely 26°−3° to 33°1°)	20°−7°	0%	6 mph10 km/h from W, gusts 3 mph6 km/h	85%	0%	0
Sat 10a	Sunny	31°−1° (likely 31°−1° to 36°2°)	26°−3°	0%	5 mph8 km/h from WSW, gusts 7 mph11 km/h	77%	2%	1
Sat 11a	Sunny	36°2° (likely 36°2° to 40°4°)	32°0°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	68%	1%	1
Sat 12p	Sunny	39°4° (likely 39°4° to 43°6°)	36°2°	0%	5 mph8 km/h from S, gusts 8 mph12 km/h	60%	1%	2
Sat 1p	Sunny	43°6° (likely 43°6° to 46°8°)	39°4°	0%	6 mph10 km/h from SSE, gusts 11 mph17 km/h	50%	4%	2
Sat 2p	Sunny	46°8° (likely 46°8° to 48°9°)	42°6°	0%	7 mph11 km/h from SSE, gusts 10 mph16 km/h	42%	0%	2
Sat 3p	Sunny	46°8° (likely 46°8° to 49°9°)	42°6°	0%	8 mph13 km/h from SSE, gusts 10 mph16 km/h	38%	0%	2
Sat 4p	Sunny	47°8° (likely 47°8° to 49°9°)	44°7°	0%	7 mph11 km/h from SSE, gusts 11 mph17 km/h	38%	0%	1
Sat 5p	Sunny	46°8° (likely 46°8° to 48°9°)	42°6°	0%	7 mph11 km/h from SSE, gusts 10 mph16 km/h	41%	0%	0
Sat 6p	Clear	43°6° (likely 43°6° to 46°8°)	40°4°	0%	5 mph8 km/h from ESE, gusts 7 mph12 km/h	50%	0%	0
Sat 7p	Clear	39°4° (likely 39°4° to 43°6°)	36°2°	0%	5 mph8 km/h from ESE, gusts 9 mph14 km/h	58%	0%	0
Sat 8p	Clear	35°2° (likely 35°2° to 40°4°)	32°0°	0%	3 mph5 km/h from E, gusts 7 mph11 km/h	63%	0%	0
Sat 9p	Clear	32°0° (likely 32°0° to 38°3°)	29°−2°	0%	3 mph5 km/h from E, gusts 6 mph9 km/h	69%	0%	0
Sat 10p	Clear	31°−1° (likely 31°−1° to 37°3°)	31°−1°	0%	2 mph3 km/h from NE, gusts 5 mph8 km/h	70%	0%	0
Sat 11p	Clear	30°−1° (likely 30°−1° to 35°2°)	26°−3°	0%	3 mph5 km/h from NE, gusts 5 mph8 km/h	71%	2%	0
Sun 12a	Clear	29°−2° (likely 29°−2° to 35°2°)	25°−4°	0%	3 mph5 km/h from NNE, gusts 4 mph7 km/h	73%	0%	0
Sun 1a	Clear	27°−3° (likely 27°−3° to 35°2°)	23°−5°	0%	3 mph5 km/h from N, gusts 5 mph8 km/h	79%	1%	0
Sun 2a	Clear	26°−3° (likely 26°−3° to 34°1°)	22°−6°	0%	3 mph5 km/h from NNW, gusts 5 mph7 km/h	83%	0%	0
Sun 3a	Clear	26°−3° (likely 26°−3° to 33°1°)	20°−7°	0%	5 mph8 km/h from NW, gusts 6 mph9 km/h	83%	5%	0
Sun 4a	Clear	26°−3° (likely 26°−3° to 33°1°)	22°−6°	0%	3 mph5 km/h from NW, gusts 5 mph8 km/h	82%	9%	0
Sun 5a	Clear	25°−4° (likely 25°−4° to 33°1°)	21°−6°	0%	3 mph5 km/h from NW, gusts 6 mph9 km/h	84%	13%	0
Sun 6a	Clear	25°−4° (likely 25°−4° to 33°1°)	21°−6°	0%	3 mph5 km/h from NW, gusts 6 mph9 km/h	83%	9%	0
Sun 7a	Clear	24°−4° (likely 24°−4° to 33°1°)	20°−7°	0%	3 mph5 km/h from NW, gusts 6 mph10 km/h	84%	8%	0
Sun 8a	Sunny	24°−4° (likely 24°−4° to 33°1°)	20°−7°	0%	3 mph5 km/h from NW, gusts 7 mph11 km/h	84%	5%	0
Sun 9a	Sunny	27°−3° (likely 27°−3° to 34°1°)	22°−6°	0%	5 mph8 km/h from ENE, gusts 5 mph9 km/h	77%	6%	0
Sun 10a	Sunny	32°0° (likely 32°0° to 39°4°)	27°−3°	0%	5 mph8 km/h from ENE, gusts 4 mph6 km/h	70%	4%	1
Sun 11a	Sunny	36°2° (likely 36°2° to 43°6°)	32°0°	0%	5 mph8 km/h from ENE, gusts 7 mph11 km/h	62%	4%	2
Sun 12p	Sunny	40°4° (likely 40°4° to 44°7°)	34°1°	0%	9 mph14 km/h from E, gusts 11 mph18 km/h	55%	2%	3
Sun 1p	Sunny	42°6° (likely 42°6° to 46°8°)	36°2°	0%	9 mph14 km/h from E, gusts 12 mph19 km/h	51%	4%	4
Sun 2p	Sunny	43°6° (likely 43°6° to 49°9°)	38°3°	0%	9 mph14 km/h from E, gusts 13 mph20 km/h	49%	0%	4
Sun 3p	Sunny	44°7° (likely 44°7° to 50°10°)	37°3°	0%	13 mph21 km/h from E, gusts 15 mph24 km/h	46%	0%	3
Sun 4p	Sunny	43°6° (likely 43°6° to 49°9°)	37°3°	0%	13 mph21 km/h from E, gusts 17 mph28 km/h	46%	0%	2
Sun 5p	Sunny	43°6° (likely 42°6° to 47°8°)	37°3°	0%	13 mph21 km/h from E, gusts 18 mph29 km/h	48%	0%	1
Sun 6p	Clear	39°4° (likely 39°4° to 44°7°)	34°1°	0%	7 mph11 km/h from E, gusts 17 mph28 km/h	58%	0%	0
Sun 7p	Clear	35°2° (likely 35°2° to 41°5°)	29°−2°	0%	7 mph11 km/h from E, gusts 12 mph20 km/h	65%	6%	0
Sun 8p	Clear	33°1° (likely 33°1° to 41°5°)	27°−3°	0%	7 mph11 km/h from E, gusts 10 mph15 km/h	71%	34%	0
Sun 9p	Clear	32°0° (likely 31°−1° to 41°5°)	27°−3°	0%	5 mph8 km/h from ENE, gusts 12 mph19 km/h	74%	25%	0
Sun 10p	Mostly clear	31°−1° (likely 30°−1° to 39°4°)	26°−3°	0%	5 mph8 km/h from ENE, gusts 9 mph15 km/h	74%	14%	0
Sun 11p	Clear	31°−1° (likely 30°−1° to 37°3°)	26°−3°	0%	5 mph8 km/h from ENE, gusts 8 mph12 km/h	74%	31%	0
Mon 12a	Partly cloudy	30°−1° (likely 30°−1° to 35°2°)	25°−4°	5%	5 mph8 km/h from NE, gusts 7 mph11 km/h	77%	19%	0
Mon 1a	Clear	29°−2° (likely 28°−2° to 34°1°)	24°−4°	5%	5 mph8 km/h from NE, gusts 3 mph4 km/h	82%	3%	0
Mon 2a	Clear	29°−2° (likely 29°−2° to 34°1°)	23°−5°	5%	5 mph8 km/h from NE, gusts 3 mph5 km/h	86%	25%	0
Mon 3a	Partly cloudy	28°−2° (likely 28°−2° to 34°1°)	25°−4°	5%	3 mph5 km/h from NNE, gusts 2 mph4 km/h	88%	37%	0
Mon 4a	Partly cloudy	28°−2° (likely 28°−2° to 33°1°)	24°−4°	5%	3 mph5 km/h from NNE, gusts 3 mph4 km/h	90%	38%	0
Mon 5a	Partly cloudy	27°−3° (likely 27°−3° to 33°1°)	23°−5°	5%	3 mph5 km/h from NNE, gusts 2 mph4 km/h	92%	35%	0

Days ahead

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

Today, Oct 24. Cloudy. High 48°9°, low 24°−4°. Typical 57°14° / 29°−2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 24°−4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 47°8°
  Dry
3. Evening
  6 PM–midnight
  Clear, 35°2°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 25°−4°
  Dry
Official NWS forecast
Today: Sunny. High near 48, with temperatures falling to around 46 in the afternoon. Southwest wind 5 to 9 mph.
Tonight: Mostly clear, with a low around 24. Northeast wind around 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
48°9°–49°9°
Low, likely
24°−4°–31°−1°
Typical high / low
57°14° / 29°−2°
Wind
13 mph20 km/h, gusts 27 mph43 km/h
UV peak
4
Tomorrow, Oct 25. Mostly sunny. High 44°7°, low 26°−3°. Typical 56°13° / 29°−2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 24°−4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 44°7°
  Dry
3. Evening
  6 PM–midnight
  Clear, 33°1°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 27°−3°
  Dry
Official NWS forecast
Day: Sunny, with a high near 44. Northeast wind 3 to 13 mph.
Night: Partly cloudy, with a low around 26. Northeast wind 3 to 7 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
44°7°–50°10°
Low, likely
24°−4°–33°1°
Typical high / low
56°13° / 29°−2°
Wind
14 mph23 km/h, gusts 21 mph33 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 46°8°, low 28°−2°. Typical 56°13° / 29°−2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 31°−1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 48°9°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 40°4°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 35°2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny. High near 46, with temperatures falling to around 44 in the afternoon. East southeast wind 2 to 7 mph.
Night: Mostly cloudy, with a low around 28. East wind 2 to 6 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
46°8°–50°10°
Low, likely
28°−2°–30°−1°
Typical high / low
56°13° / 29°−2°
Wind
9 mph14 km/h
UV peak
4
Tuesday, Oct 27. Showers. High 49°9°, low 29°−2°. Typical 55°13° / 28°−2°. Rain 0.08 in2 mm, 40% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 36°2°
  30% chance · 0.05 in1.4 mm
2. Afternoon
  noon–6 PM
  Cloudy, 51°10°
  30% chance
3. Evening
  6 PM–midnight
  Clear, 43°6°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 34°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers. Mostly cloudy. High near 49, with temperatures falling to around 47 in the afternoon. West wind 3 to 22 mph. Chance of precipitation is 40%.
Night: A chance of rain showers. Mostly cloudy, with a low around 29. West northwest wind around 14 mph. Chance of precipitation is 30%.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
49°9°–52°11°
Low, likely
29°−2°–35°2°
Typical high / low
55°13° / 28°−2°
Wind
24 mph39 km/h, gusts 41 mph67 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 50°10°, low 25°−4°. Typical 55°13° / 28°−2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 33°0°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 54°12°
  Dry
3. Evening
  6 PM–midnight
  Clear, 42°6°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 29°−2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny. High near 50, with temperatures falling to around 47 in the afternoon. West northwest wind 3 to 12 mph.
Night: Partly cloudy, with a low around 25. Northeast wind around 6 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
50°10°–55°13°
Low, likely
25°−4°–36°2°
Typical high / low
55°13° / 28°−2°
Wind
14 mph23 km/h, gusts 37 mph60 km/h
UV peak
3
Thursday, Oct 29. Snow. High 46°8°, low 25°−4°. Typical 54°12° / 28°−2°. Snow < 1 in< 2 cm, 10% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 29°−2°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 46°8°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 40°4°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 34°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny. High near 46, with temperatures falling to around 43 in the afternoon. East southeast wind around 6 mph.
Night: A slight chance of rain and snow showers before midnight. Mostly cloudy, with a low around 25. East southeast wind around 5 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
25°−4°–31°−1°
Typical high / low
54°12° / 28°−2°
Wind
9 mph14 km/h, gusts 19 mph31 km/h
UV peak
3
Friday, Oct 30. Snow. High 48°9°, low 27°−3°. Typical 54°12° / 28°−2°. Snow < 1 in< 2 cm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 34°1°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 43°6°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 40°4°
  30% chance
4. Overnight
  midnight–6 AM
  Partly cloudy, 33°1°
  30% chance · 0.02 in0.4 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain and snow showers. Partly sunny. High near 48, with temperatures falling to around 45 in the afternoon. West wind 1 to 5 mph. Chance of precipitation is 20%. Little or no snow accumulation expected.
Night: A chance of rain showers before 9pm, then a chance of rain and snow showers. Mostly cloudy, with a low around 27. Northwest wind around 5 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
39°4°–50°10°
Low, likely
27°−3°–36°2°
Typical high / low
54°12° / 28°−2°
Wind
13 mph21 km/h, gusts 19 mph30 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 42°6°, low 31°−1°. Typical 53°12° / 27°−3°. Rain 0.06 in1.5 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 34°1°
  20% chance · 0.2 in0.5 cm
2. Afternoon
  noon–6 PM
  Cloudy, 41°5°
  Dry
3. Evening
  6 PM–midnight
  Clear, 36°2°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 31°−1°
  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
38°3°–49°9°
Low, likely
23°−5°–35°2°
Typical high / low
53°12° / 27°−3°
Wind
23 mph37 km/h
UV peak
3
Sunday, Nov 1. Mostly sunny. High 45°7°, low 29°−2°. Typical 53°12° / 27°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 32°0°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 44°7°
  Dry
3. Evening
  6 PM–midnight
  Clear, 39°4°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 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
39°4°–51°11°
Low, likely
17°−8°–34°1°
Typical high / low
53°12° / 27°−3°
Wind
25 mph40 km/h, gusts 39 mph62 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 47°8°, low 34°1°. Typical 52°11° / 27°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 49°10°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 40°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
35°2°–58°14°
Low, likely
33°1°–36°2°
Typical high / low
52°11° / 27°−3°
Wind
10 mph17 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 48°, low 24°.
Tomorrow
Dry, high 44°, low 26°, cooling off.
Monday
Dry, high 46°, low 28°.
Rest of week
Highs 42–50°; 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

Musselshell River near Shawmut

3.0 mi

Below flood stage

Level: 2.4 ft

Reading from Sat 4:30 AM · NWS gauge page

Musselshell River near Harlowton

17 mi

Below flood stage

Level: 2.9 ft

Reading from Sat 4 AM · NWS gauge page

For your home

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

Heating this week

About 62% less heating than a typical week.

This week 62Typical 162

Heating degree days, base 65°F

Heat-pump hours, next 7 days

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

Comfort

Dry air outside (dew point 23°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?

Ryegate · official normals 1991–2020 · records 1909–2026

Oct 24, today vs a typical year

Today’s expected high is 9°5° colder than typical.

Last 7 days vs normal

On average 5°3° warmer than normal (daily mean temperature).

+7°+4°SunOct 18
+4°+2°MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 27 min; Losing 3 min 8 s a day; shortest Dec 21, 1 h 52 min less
Golden hour: 5:33–6:34 PM; Morning 7:29–8:30 AM
Blue hour: 6:34–6:46 PM; Morning 7:17–7:29 AM; first light 7:17 AM

Stars tonight? Good

Clear 6:05–7:17 AM; moon 96% lit but below the horizon.

Moon

Waxing gibbous

96% lit · growing

Today: sets 6:02 AM · rises 5:16 PM
Full moon: Oct 25
New moon: Nov 9

Looking west from Shawmut. The highest point on the skyline is about 12,500 ft, 76 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.