Model estimate for 7:00 PM CST (no recent station report)

Westby, MT weather

Clear and 40°4°, freeze watch tonight, low 23°−5°.

Forecasts agree

Now 40°4°

Clear · Feels like 33°1°

Feels like: 34°1°; Wind chill from 10 mph16 km/h wind · air 40°4°
Wind: 10 mph16 km/h; From the west. 610–10 mph16 km/h through 7 AM
Dew point: 24°−4°; Dry, static shocks likely
UV tomorrow: 3Moderate; Moderate 12–3 PM · peak 3

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Hard freeze tonight 11 PM–10 AM (low 23°−5°)
Low 23°−5° tomorrow at 7 AM
Above 30°−1° tomorrow by 10 AM
High 42°6° tomorrow at 4 PM
Hard freeze tomorrow night 8 PM–11 AM (low 21°−6°)

TonightDown to 25°−4° by 4 AM · freezing, low 25°−4° · Clear
Tomorrow morningUp to 36°2° by 11 AM · freezing, low 23°−5° · Clear
Tomorrow afternoonUp to 42°6° by 4 PM · Clear
Tomorrow nightDown to 22°−6° by 5 AM · freezing, low 22°−6° · Clear
Monday morningUp to 36°2° by 11 AM · freezing, low 21°−6° · Partly cloudy
Monday afternoonNear 40°4° · 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 7p	Clear	40°4° (likely 38°3° to 40°4°)	33°1°	0%	10 mph16 km/h from W, gusts 13 mph20 km/h	52%	0%	0
Sat 8p	Clear	36°2° (likely 35°2° to 39°4°)	29°−2°	0%	9 mph14 km/h from W, gusts 12 mph19 km/h	57%	0%	0
Sat 9p	Clear	35°2° (likely 33°1° to 38°3°)	28°−2°	0%	9 mph14 km/h from W, gusts 11 mph17 km/h	60%	2%	0
Sat 10p	Clear	33°1° (likely 30°−1° to 36°2°)	26°−3°	0%	8 mph13 km/h from W, gusts 11 mph18 km/h	64%	4%	0
Sat 11p	Clear	31°−1° (likely 28°−2° to 35°2°)	24°−4°	0%	7 mph11 km/h from W, gusts 9 mph14 km/h	68%	7%	0
Sun 12a	Clear	29°−2° (likely 27°−3° to 34°1°)	23°−5°	0%	6 mph10 km/h from NW, gusts 6 mph10 km/h	72%	2%	0
Sun 1a	Clear	28°−2° (likely 25°−4° to 33°1°)	22°−6°	0%	6 mph10 km/h from NW, gusts 6 mph9 km/h	75%	0%	0
Sun 2a	Clear	27°−3° (likely 23°−5° to 32°0°)	20°−7°	0%	6 mph10 km/h from N, gusts 6 mph10 km/h	77%	0%	0
Sun 3a	Clear	26°−3° (likely 22°−6° to 31°−1°)	19°−7°	0%	6 mph10 km/h from N, gusts 8 mph13 km/h	77%	12%	0
Sun 4a	Clear	25°−4° (likely 22°−6° to 31°−1°)	18°−8°	0%	6 mph10 km/h from N, gusts 8 mph13 km/h	77%	38%	0
Sun 5a	Clear	25°−4° (likely 22°−6° to 30°−1°)	18°−8°	0%	6 mph10 km/h from N, gusts 8 mph13 km/h	80%	4%	0
Sun 6a	Clear	24°−4° (likely 21°−6° to 30°−1°)	17°−8°	0%	6 mph10 km/h from N, gusts 7 mph10 km/h	81%	7%	0
Sun 7a	Clear	23°−5° (likely 20°−7° to 29°−2°)	16°−9°	0%	6 mph10 km/h from N, gusts 6 mph10 km/h	83%	5%	0
Sun 8a	Sunny	24°−4° (likely 20°−7° to 30°−1°)	17°−8°	0%	6 mph10 km/h from N, gusts 7 mph12 km/h	81%	1%	0
Sun 9a	Sunny	28°−2° (likely 24°−4° to 32°0°)	21°−6°	0%	7 mph11 km/h from NE, gusts 9 mph14 km/h	78%	0%	0
Sun 10a	Sunny	33°1° (likely 32°0° to 34°1°)	25°−4°	0%	9 mph14 km/h from NE, gusts 11 mph18 km/h	66%	2%	1
Sun 11a	Sunny	36°2° (likely 35°2° to 37°3°)	29°−2°	0%	9 mph14 km/h from NE, gusts 12 mph19 km/h	55%	1%	2
Sun 12p	Sunny	38°3° (likely 38°3° to 39°4°)	32°0°	0%	9 mph14 km/h from NE, gusts 12 mph19 km/h	50%	1%	3
Sun 1p	Sunny	40°4° (likely 39°4° to 41°5°)	33°1°	0%	10 mph16 km/h from NE, gusts 11 mph18 km/h	45%	0%	3
Sun 2p	Sunny	41°5° (likely 40°4° to 42°6°)	35°2°	0%	10 mph16 km/h from NE, gusts 11 mph18 km/h	43%	2%	3
Sun 3p	Sunny	41°5° (likely 41°5° to 43°6°)	35°2°	0%	10 mph16 km/h from NE, gusts 12 mph19 km/h	41%	1%	2
Sun 4p	Sunny	42°6° (likely 40°4° to 42°6°)	36°2°	0%	10 mph16 km/h from NE, gusts 12 mph20 km/h	42%	0%	2
Sun 5p	Sunny	40°4° (likely 38°3° to 41°5°)	33°1°	0%	10 mph16 km/h from NE, gusts 13 mph21 km/h	44%	0%	1
Sun 6p	Clear	37°3° (likely 33°1° to 37°3°)	31°−1°	0%	8 mph13 km/h from NE, gusts 11 mph18 km/h	54%	0%	0
Sun 7p	Clear	33°1° (likely 30°−1° to 34°1°)	26°−3°	0%	8 mph13 km/h from NE, gusts 11 mph17 km/h	64%	0%	0
Sun 8p	Clear	29°−2° (likely 27°−3° to 33°1°)	21°−6°	0%	8 mph13 km/h from NE, gusts 10 mph17 km/h	71%	0%	0
Sun 9p	Clear	28°−2° (likely 24°−4° to 32°0°)	20°−7°	0%	8 mph13 km/h from NE, gusts 10 mph16 km/h	74%	0%	0
Sun 10p	Clear	27°−3° (likely 23°−5° to 31°−1°)	19°−7°	0%	8 mph13 km/h from NE, gusts 11 mph17 km/h	77%	0%	0
Sun 11p	Clear	25°−4° (likely 22°−6° to 31°−1°)	16°−9°	0%	8 mph13 km/h from NE, gusts 10 mph16 km/h	80%	0%	0
Mon 12a	Clear	25°−4° (likely 21°−6° to 30°−1°)	16°−9°	0%	8 mph13 km/h from E, gusts 10 mph17 km/h	81%	2%	0
Mon 1a	Clear	24°−4° (likely 20°−7° to 29°−2°)	15°−9°	0%	8 mph13 km/h from E, gusts 10 mph17 km/h	83%	2%	0
Mon 2a	Clear	23°−5° (likely 20°−7° to 29°−2°)	14°−10°	0%	8 mph13 km/h from E, gusts 10 mph16 km/h	83%	15%	0
Mon 3a	Clear	23°−5° (likely 20°−7° to 28°−2°)	14°−10°	0%	8 mph13 km/h from E, gusts 10 mph16 km/h	82%	3%	0
Mon 4a	Clear	23°−5° (likely 20°−7° to 28°−2°)	14°−10°	0%	8 mph13 km/h from E, gusts 9 mph15 km/h	81%	34%	0
Mon 5a	Partly cloudy	22°−6° (likely 20°−7° to 28°−2°)	13°−11°	0%	8 mph13 km/h from E, gusts 9 mph14 km/h	82%	23%	0
Mon 6a	Clear	21°−6° (likely 19°−7° to 28°−2°)	11°−12°	0%	8 mph13 km/h from E, gusts 9 mph14 km/h	84%	13%	0
Mon 7a	Cloudy	22°−6° (likely 18°−8° to 26°−3°)	13°−11°	0%	8 mph13 km/h from E, gusts 8 mph13 km/h	84%	58%	0
Mon 8a	Mostly cloudy	24°−4° (likely 18°−8° to 27°−3°)	15°−9°	0%	8 mph13 km/h from E, gusts 7 mph12 km/h	82%	46%	0
Mon 9a	Cloudy	27°−3° (likely 23°−5° to 29°−2°)	18°−8°	0%	9 mph14 km/h from E, gusts 8 mph13 km/h	77%	59%	0
Mon 10a	Cloudy	31°−1° (likely 30°−1° to 34°1°)	23°−5°	0%	9 mph14 km/h from E, gusts 14 mph22 km/h	69%	55%	1
Mon 11a	Cloudy	36°2° (likely 36°2° to 39°4°)	29°−2°	0%	9 mph14 km/h from E, gusts 15 mph24 km/h	60%	55%	2
Mon 12p	Cloudy	40°4° (likely 39°4° to 42°6°)	32°0°	0%	15 mph24 km/h from SE, gusts 19 mph30 km/h	52%	53%	3
Mon 1p	Partly sunny	42°6° (likely 42°6° to 45°7°)	34°1°	0%	15 mph24 km/h from SE, gusts 19 mph30 km/h	47%	35%	3
Mon 2p	Partly sunny	43°6° (likely 43°6° to 46°8°)	36°2°	0%	15 mph24 km/h from SE, gusts 19 mph30 km/h	45%	39%	3
Mon 3p	Partly sunny	43°6° (likely 42°6° to 47°8°)	35°2°	0%	16 mph26 km/h from SE, gusts 20 mph32 km/h	45%	43%	2
Mon 4p	Partly sunny	42°6° (likely 42°6° to 46°8°)	34°1°	0%	16 mph26 km/h from SE, gusts 21 mph33 km/h	47%	65%	1
Mon 5p	Partly sunny	40°4° (likely 40°4° to 44°7°)	32°0°	0%	16 mph26 km/h from SE, gusts 21 mph33 km/h	51%	54%	1
Mon 6p	Cloudy	38°3° (likely 37°3° to 42°6°)	30°−1°	5%	14 mph23 km/h from SE, gusts 18 mph29 km/h	56%	75%	0

Days ahead

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

Today, Oct 24. Cloudy. High 47°8°, low 23°−5°. Typical 49°9° / 25°−4°. Dry. Forecasts agree.
1. Evening
  6 PM–midnight
  Clear, 36°2°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 25°−4°
  Dry
Official NWS forecast
Tonight: Partly cloudy. Low around 23, with temperatures rising to around 25 overnight. Northwest wind 6 to 10 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
46°8°–47°8°
Low, likely
23°−5°–34°1°
Typical high / low
49°9° / 25°−4°
Wind
28 mph46 km/h, gusts 49 mph78 km/h
UV peak
3
Tomorrow, Oct 25. Mostly sunny. High 42°6°, low 21°−6°. Typical 48°9° / 24°−4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 24°−4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 42°6°
  Dry
3. Evening
  6 PM–midnight
  Clear, 29°−2°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 22°−6°
  Dry
Official NWS forecast
Day: Sunny, with a high near 42. Northeast wind 6 to 10 mph.
Night: Mostly clear. Low around 21, with temperatures rising to around 23 overnight. East wind around 10 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
41°5°–43°6°
Low, likely
20°−7°–29°−2°
Typical high / low
48°9° / 24°−4°
Wind
10 mph16 km/h, gusts 17 mph27 km/h
UV peak
3
Monday, Oct 26. Partly sunny. High 43°6°, low 24°−4°. Typical 47°8° / 24°−4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 24°−4°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 43°6°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 37°3°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 32°0°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 43. East wind 8 to 16 mph, with gusts as high as 25 mph.
Night: Mostly cloudy, with a low around 24. Southeast wind 12 to 16 mph, with gusts as high as 25 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
43°6°–47°8°
Low, likely
18°−8°–27°−3°
Typical high / low
47°8° / 24°−4°
Wind
16 mph26 km/h, gusts 26 mph42 km/h
UV peak
3
Tuesday, Oct 27. Snow. High 41°5°, low 26°−3°. Typical 47°8° / 23°−5°. Snow < 1 in< 2 cm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 33°0°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 38°3°
  50% chance · 0.02 in0.6 mm
3. Evening
  6 PM–midnight
  Snow, 35°1°
  70% chance · 0.1 in0.3 cm
4. Overnight
  midnight–6 AM
  Snow, 33°1°
  70% chance · 0.05 in1.3 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of snow between 7am and 1pm, then a chance of rain and snow between 1pm and 4pm, then a chance of rain and snow. Mostly cloudy, with a high near 41. Southeast wind 12 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Night: A chance of rain and snow before 7pm, then a chance of rain and snow. Cloudy, with a low around 26. Southeast wind 7 to 14 mph, with gusts as high as 22 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
35°2°–41°5°
Low, likely
26°−3°–34°1°
Typical high / low
47°8° / 23°−5°
Wind
13 mph21 km/h, gusts 24 mph38 km/h
Wednesday, Oct 28. Snow. High 45°7°, low 23°−5°. Typical 46°8° / 23°−5°. Snow < 1 in< 2 cm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 35°2°
  40% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Partly sunny, 41°5°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 37°3°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 29°−2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain before 1pm. Mostly cloudy, with a high near 45. West wind 9 to 16 mph, with gusts as high as 25 mph.
Night: Mostly cloudy, with a low around 23. Northwest wind 5 to 16 mph, with gusts as high as 25 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
38°3°–45°7°
Low, likely
23°−5°–35°2°
Typical high / low
46°8° / 23°−5°
Wind
19 mph30 km/h, gusts 34 mph55 km/h
UV peak
2
Thursday, Oct 29. Mostly cloudy. High 44°7°, low 25°−4°. Typical 46°8° / 22°−6°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 29°−2°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 45°7°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 36°2°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 33°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 44. North wind 5 to 12 mph, with gusts as high as 18 mph.
Night: Mostly cloudy, with a low around 25. East wind around 12 mph, with gusts as high as 18 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
40°4°–48°9°
Low, likely
22°−6°–33°1°
Typical high / low
46°8° / 22°−6°
Wind
12 mph19 km/h, gusts 31 mph50 km/h
UV peak
3
Friday, Oct 30. Cloudy. High 44°7°, low 27°−3°. Typical 45°7° / 22°−6°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 35°1°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 42°6°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 39°4°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 36°2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 44. East wind around 13 mph, with gusts as high as 21 mph.
Night: A slight chance of rain and snow after 7pm. Mostly cloudy, with a low around 27. East wind 6 to 13 mph, with gusts as high as 21 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
34°1°–49°9°
Low, likely
23°−5°–37°3°
Typical high / low
45°7° / 22°−6°
Wind
15 mph24 km/h, gusts 24 mph38 km/h
UV peak
2
Saturday, Oct 31. Snow. High 46°8°, low 36°2°. Typical 44°7° / 21°−6°. Snow 0.1 in2.5 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 36°2°
  20% chance · 0.04 in1 mm
2. Afternoon
  noon–6 PM
  Sunny, 42°6°
  Dry
3. Evening
  6 PM–midnight
  Clear, 41°5°
  20% chance · 0.03 in0.9 mm
4. Overnight
  midnight–6 AM
  Clear, 38°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain and snow. Mostly cloudy, with a high near 46.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
32°0°–54°12°
Low, likely
27°−3°–45°7°
Typical high / low
44°7° / 21°−6°
Wind
8 mph14 km/h, gusts 20 mph32 km/h
UV peak
3
Sunday, Nov 1. Sunny. High 46°8°, low 36°2°. Typical 44°7° / 21°−6°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
38°3°–54°12°
Low, likely
28°−2°–44°7°
Typical high / low
44°7° / 21°−6°
Wind
17 mph27 km/h, gusts 31 mph49 km/h
UV peak
3
Monday, Nov 2. Partly sunny. High 49°9°, low 35°2°. Typical 43°6° / 20°−7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 49°9°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 43°6°
  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
43°6°–56°13°
Low, likely
31°−1°–37°3°
Typical high / low
43°6° / 20°−7°
Wind
28 mph45 km/h, gusts 50 mph80 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 47°, low 23°.
Tomorrow
Dry, high 42°, low 21°, cooling off.
Monday
Dry, high 43°, low 24°.
Rest of week
Highs 41–49°; chance of precipitation on Wednesday.

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

For your home

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

Pipes: watch the cold

Tonight’s low: 23°−5°

Overnight low near 23°F — not yet at drip-the-faucets cold, but worth watching if it's forecast to drop further.

Heating this week

About 69% less heating than a typical week.

This week 66Typical 210

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.

Comfort

Dry air outside (dew point 24°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?

Westby · official normals 1991–2020 · records 1937–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24
—SunOct 25

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

Sun & moon

Sun

Daylight: 10 h 18 min; Losing 3 min 22 s a day; shortest Dec 21, 2 h 4 min less
Golden hour: 5:04–6:09 PM; Morning 7:10–8:15 AM
Blue hour: 6:09–6:21 PM; Morning 6:58–7:10 AM; first light 6:58 AM

Stars tonight? Fair

Clear 7:07 PM–4 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:42 AM · rises 4:50 PM
Full moon: Oct 25
New moon: Nov 9

Looking west from Westby. The highest point on the skyline is about 2,600 ft, 14 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.