Observed 4:50 PM MDT at KMSO

Potomac, MT weather

Sunny and 50°10°.

Mostly agree

Now 50°10°

Sunny

Wind: 3 mph5 km/h; From the east-southeast. Light through 5 AM
Dew point: 34°1°; Dry, static shocks likely
UV tomorrow: 4Moderate; Moderate 1–4 PM · peak 4
Air quality: 42Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.16 inHg1021 hPa; Falling · −0.07 inHg−2.2 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Below 40°4° tonight after 8 PM
Fog tonight 10 PM–1 AM
Below freezing tonight 2–11 AM (low 29°−2°)
Fog tonight 4–6 AM
Hard freeze tomorrow night 10 PM–11 AM (low 24°−4°)

TonightDown to 31°−1° by 5 AM · Partly cloudy · freezing, low 31°−1°
Tomorrow morningUp to 34°1° by 11 AM · freezing, low 29°−2° · Partly cloudy
Tomorrow afternoonUp to 49°9° by 3 PM · Mostly cloudy
Tomorrow nightDown to 26°−3° by 5 AM · freezing, low 26°−3° · Mostly cloudy
Monday morningUp to 36°2° by 11 AM · freezing, low 24°−4° · Partly cloudy
Monday afternoonUp to 52°11° by 3 PM · Mostly 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 5p	Mostly cloudy	50°10° (likely 46°8° to 50°10°)	50°10°	0%	0 mph0 km/h, gusts 2 mph4 km/h	62%	40%	1
Sat 6p	Partly sunny	46°8° (likely 43°6° to 47°8°)	46°8°	0%	0 mph0 km/h, gusts 2 mph3 km/h	75%	58%	1
Sat 7p	Clear	43°6° (likely 40°4° to 43°6°)	43°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	82%	26%	0
Sat 8p	Mostly cloudy	39°4° (likely 37°3° to 41°5°)	39°4°	0%	0 mph0 km/h, gusts 2 mph4 km/h	91%	61%	0
Sat 9p	Mostly clear	37°3° (likely 35°2° to 40°4°)	37°3°	0%	1 mph2 km/h from ENE, gusts 2 mph3 km/h	94%	35%	0
Sat 10p	Fog	35°2° (likely 34°1° to 39°4°)	35°2°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	54%	0
Sat 11p	Fog	35°2° (likely 34°1° to 38°3°)	35°2°	0%	0 mph0 km/h, gusts 2 mph4 km/h	99%	59%	0
Sun 12a	Fog	34°1° (likely 33°1° to 37°3°)	34°1°	0%	1 mph2 km/h from ENE, gusts 2 mph4 km/h	100%	23%	0
Sun 1a	Clear	34°1° (likely 32°0° to 36°2°)	34°1°	0%	1 mph2 km/h from ENE, gusts 3 mph5 km/h	94%	25%	0
Sun 2a	Clear	32°0° (likely 31°−1° to 36°2°)	32°0°	0%	1 mph2 km/h from ENE, gusts 2 mph4 km/h	99%	15%	0
Sun 3a	Clear	32°0° (likely 31°−1° to 36°2°)	32°0°	0%	1 mph2 km/h from ENE, gusts 3 mph4 km/h	98%	15%	0
Sun 4a	Fog	32°0° (likely 30°−1° to 36°2°)	32°0°	0%	1 mph2 km/h from ENE, gusts 2 mph4 km/h	96%	31%	0
Sun 5a	Fog	31°−1° (likely 30°−1° to 36°2°)	31°−1°	0%	1 mph2 km/h from E, gusts 3 mph5 km/h	99%	28%	0
Sun 6a	Mostly clear	30°−1° (likely 29°−2° to 35°2°)	30°−1°	0%	2 mph3 km/h from E, gusts 3 mph6 km/h	100%	35%	0
Sun 7a	Clear	30°−1° (likely 27°−3° to 36°2°)	26°−3°	0%	3 mph5 km/h from ENE, gusts 3 mph5 km/h	100%	19%	0
Sun 8a	Sunny	29°−2° (likely 26°−3° to 35°2°)	25°−4°	0%	3 mph5 km/h from NE, gusts 3 mph5 km/h	100%	21%	0
Sun 9a	Sunny	29°−2° (likely 28°−2° to 36°2°)	24°−4°	0%	5 mph8 km/h from NE, gusts 3 mph4 km/h	100%	14%	0
Sun 10a	Mostly sunny	31°−1° (likely 31°−1° to 40°4°)	28°−2°	0%	3 mph5 km/h from NE, gusts 2 mph4 km/h	100%	23%	1
Sun 11a	Mostly sunny	34°1° (likely 34°1° to 43°6°)	31°−1°	0%	3 mph5 km/h from ENE, gusts 5 mph8 km/h	100%	55%	1
Sun 12p	Partly sunny	40°4° (likely 40°4° to 45°7°)	38°3°	0%	3 mph5 km/h from ENE, gusts 7 mph12 km/h	88%	67%	2
Sun 1p	Partly sunny	45°7° (likely 45°7° to 47°8°)	44°7°	0%	3 mph5 km/h from ENE, gusts 8 mph13 km/h	74%	68%	3
Sun 2p	Partly sunny	47°8° (likely 47°8° to 50°10°)	46°8°	0%	3 mph5 km/h from ENE, gusts 8 mph13 km/h	63%	69%	4
Sun 3p	Partly sunny	49°9° (likely 49°9° to 51°11°)	48°9°	0%	3 mph5 km/h from ENE, gusts 8 mph13 km/h	58%	71%	3
Sun 4p	Partly sunny	49°9° (likely 49°9° to 51°11°)	48°9°	0%	3 mph5 km/h from ENE, gusts 9 mph15 km/h	55%	72%	2
Sun 5p	Partly sunny	48°9° (likely 46°8° to 50°10°)	47°8°	0%	3 mph5 km/h from ENE, gusts 10 mph17 km/h	58%	74%	1
Sun 6p	Cloudy	44°7° (likely 43°6° to 48°9°)	44°7°	0%	2 mph3 km/h from NE, gusts 9 mph14 km/h	69%	77%	1
Sun 7p	Cloudy	41°5° (likely 40°4° to 43°6°)	41°5°	0%	2 mph3 km/h from NE, gusts 6 mph10 km/h	77%	77%	0
Sun 8p	Cloudy	36°2° (likely 36°2° to 41°5°)	36°2°	0%	2 mph3 km/h from NE, gusts 4 mph7 km/h	84%	76%	0
Sun 9p	Cloudy	35°2° (likely 34°1° to 40°4°)	32°0°	0%	3 mph5 km/h from ENE, gusts 3 mph5 km/h	88%	77%	0
Sun 10p	Cloudy	32°0° (likely 32°0° to 39°4°)	29°−2°	0%	3 mph5 km/h from ENE, gusts 3 mph4 km/h	98%	76%	0
Sun 11p	Cloudy	32°0° (likely 31°−1° to 37°3°)	29°−2°	0%	3 mph5 km/h from ENE, gusts 3 mph5 km/h	96%	68%	0
Mon 12a	Mostly cloudy	30°−1° (likely 29°−2° to 36°2°)	30°−1°	0%	2 mph3 km/h from NE, gusts 3 mph5 km/h	100%	42%	0
Mon 1a	Mostly cloudy	30°−1° (likely 29°−2° to 36°2°)	30°−1°	0%	2 mph3 km/h from NE, gusts 2 mph4 km/h	93%	65%	0
Mon 2a	Cloudy	28°−2° (likely 28°−2° to 35°2°)	28°−2°	0%	2 mph3 km/h from NE, gusts 2 mph3 km/h	98%	75%	0
Mon 3a	Cloudy	29°−2° (likely 28°−2° to 35°2°)	29°−2°	0%	1 mph2 km/h from NE, gusts 2 mph3 km/h	97%	79%	0
Mon 4a	Clear	27°−3° (likely 27°−3° to 35°2°)	27°−3°	0%	1 mph2 km/h from NE, gusts 3 mph4 km/h	95%	34%	0
Mon 5a	Clear	26°−3° (likely 26°−3° to 35°2°)	26°−3°	0%	1 mph2 km/h from NE, gusts 2 mph3 km/h	99%	33%	0
Mon 6a	Cloudy	26°−3° (likely 26°−3° to 35°2°)	26°−3°	0%	1 mph2 km/h from ENE, gusts 3 mph4 km/h	100%	38%	0
Mon 7a	Cloudy	25°−4° (likely 25°−4° to 35°2°)	25°−4°	0%	1 mph2 km/h from ENE, gusts 2 mph4 km/h	100%	42%	0
Mon 8a	Cloudy	24°−4° (likely 24°−4° to 35°2°)	24°−4°	0%	1 mph2 km/h from ENE, gusts 2 mph3 km/h	100%	45%	0
Mon 9a	Mostly cloudy	26°−3° (likely 26°−3° to 35°2°)	26°−3°	0%	2 mph3 km/h from E, gusts 3 mph5 km/h	100%	74%	0
Mon 10a	Cloudy	30°−1° (likely 30°−1° to 39°4°)	30°−1°	0%	2 mph3 km/h from E, gusts 3 mph5 km/h	97%	82%	1
Mon 11a	Cloudy	36°2° (likely 36°2° to 42°6°)	36°2°	0%	2 mph3 km/h from E, gusts 3 mph5 km/h	91%	80%	2
Mon 12p	Cloudy	42°6° (likely 40°4° to 45°7°)	42°6°	10%	1 mph2 km/h from E, gusts 3 mph6 km/h	84%	83%	2
Mon 1p	Cloudy	46°8° (likely 41°5° to 49°9°)	46°8°	10%	1 mph2 km/h from E, gusts 4 mph6 km/h	74%	79%	3
Mon 2p	Cloudy	50°10° (likely 44°7° to 51°11°)	50°10°	10%	1 mph2 km/h from E, gusts 4 mph6 km/h	64%	89%	3
Mon 3p	Cloudy	52°11° (likely 46°8° to 52°11°)	52°11°	10%	1 mph2 km/h from E, gusts 3 mph5 km/h	59%	83%	2
Mon 4p	Cloudy	51°11° (likely 47°8° to 51°11°)	51°11°	10%	1 mph2 km/h from E, gusts 3 mph4 km/h	62%	82%	2

Days ahead

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

Today, Oct 24. Cloudy. High 50°10°, low 29°−2°. Typical 51°11° / 21°−6°. Dry. Mostly agree.
1. Evening
  6 PM–midnight
  Mostly clear, 39°4°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 31°−1°
  Dry
Official NWS forecast
Today: Partly sunny, with a high near 50. Wind around 0 mph.
Tonight: Areas of fog after 10pm. Partly cloudy, with a low around 29. East northeast wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
46°8°–50°10°
Low, likely
27°−3°–34°1°
Typical high / low
51°11° / 21°−6°
Wind
4 mph7 km/h, gusts 11 mph17 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 49°9°, low 24°−4°. Typical 50°10° / 21°−6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 29°−2°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 49°9°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 36°2°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 26°−3°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 49. East northeast wind around 5 mph.
Night: Mostly cloudy, with a low around 24. Northeast wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
49°9°–51°11°
Low, likely
24°−4°–35°2°
Typical high / low
50°10° / 21°−6°
Wind
7 mph11 km/h, gusts 15 mph24 km/h
UV peak
4
Monday, Oct 26. Mostly cloudy. High 52°11°, low 29°−2°. Typical 50°10° / 21°−6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly cloudy, 24°−4°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 52°11°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 41°5°
  70% chance · 0.09 in2.3 mm
4. Overnight
  midnight–6 AM
  Drizzle, 39°4°
  70% chance · 0.11 in2.7 mm
Official NWS forecast
Day: Partly sunny, with a high near 52. East northeast wind around 2 mph.
Night: Rain. Mostly cloudy, with a low around 29. Chance of precipitation is 80%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
48°9°–52°11°
Low, likely
26°−3°–33°1°
Typical high / low
50°10° / 21°−6°
Wind
6 mph9 km/h
UV peak
3
Tuesday, Oct 27. Drizzle. High 45°7°, low 27°−3°. Typical 49°9° / 20°−7°. Rain 0.18 in4.6 mm, 70% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 38°3°
  70% chance · 0.07 in1.8 mm
2. Afternoon
  noon–6 PM
  Drizzle, 45°7°
  50% chance · 0.02 in0.4 mm
3. Evening
  6 PM–midnight
  Cloudy, 40°4°
  30% chance
4. Overnight
  midnight–6 AM
  Cloudy, 32°0°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain and snow likely. Mostly cloudy, with a high near 45. Little or no snow accumulation expected.
Night: Mostly cloudy, with a low around 27.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
42°6°–48°9°
Low, likely
27°−3°–38°3°
Typical high / low
49°9° / 20°−7°
Wind
18 mph28 km/h, gusts 29 mph47 km/h
UV peak
1
Wednesday, Oct 28. Snow. High 47°8°, low 25°−4°. Typical 48°9° / 20°−7°. Snow 0.03 in0.8 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 32°0°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 47°8°
  Dry
3. Evening
  6 PM–midnight
  Clear, 39°4°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 32°0°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain and snow before noon. Partly sunny, with a high near 47.
Night: A slight chance of rain before 9pm, then a slight chance of rain and snow between 9pm and midnight. Mostly cloudy, with a low around 25.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
44°7°–49°9°
Low, likely
25°−4°–33°1°
Typical high / low
48°9° / 20°−7°
Wind
10 mph16 km/h, gusts 21 mph34 km/h
UV peak
3
Thursday, Oct 29. Snow. High 47°8°, low 24°−4°. Typical 48°9° / 20°−7°. Snow 0–4 in0–10 cm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 32°0°
  30% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Cloudy, 46°8°
  30% chance · 0.4 in1 cm
3. Evening
  6 PM–midnight
  Cloudy, 39°4°
  40% chance · 0.3 in0.8 cm
4. Overnight
  midnight–6 AM
  Partly cloudy, 34°1°
  30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of snow before noon. Partly sunny, with a high near 47.
Night: A chance of rain and snow. Mostly cloudy, with a low around 24.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
40°4°–51°11°
Low, likely
24°−4°–32°0°
Typical high / low
48°9° / 20°−7°
Wind
4 mph6 km/h, gusts 15 mph24 km/h
UV peak
3
Friday, Oct 30. Snow. High 46°8°, low 22°−6°. Typical 47°8° / 20°−7°. Snow 0.06 in1.5 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 34°1°
  30% chance
2. Afternoon
  noon–6 PM
  Partly sunny, 41°5°
  20% chance · 0.02 in0.6 mm
3. Evening
  6 PM–midnight
  Drizzle, 36°2°
  20% chance · 0.03 in0.7 mm
4. Overnight
  midnight–6 AM
  Cloudy, 30°−1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of snow before noon, then a slight chance of rain and snow. Partly sunny, with a high near 46. Little or no snow accumulation expected.
Night: A slight chance of rain and snow. Mostly cloudy, with a low around 22.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
39°4°–46°8°
Low, likely
22°−6°–35°2°
Typical high / low
47°8° / 20°−7°
Wind
6 mph9 km/h, gusts 14 mph22 km/h
UV peak
1
Saturday, Oct 31. Cloudy. High 40°4°, low 27°−3°. Typical 47°8° / 20°−7°. Rain 0.03 in0.8 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 30°−1°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 40°4°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 34°1°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 29°−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
34°1°–45°7°
Low, likely
20°−7°–35°2°
Typical high / low
47°8° / 20°−7°
Wind
11 mph18 km/h, gusts 20 mph33 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 42°6°, low 27°−3°. Typical 46°8° / 19°−7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 29°−2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 42°5°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 36°2°
  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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
39°4°–45°7°
Low, likely
25°−4°–32°0°
Typical high / low
46°8° / 19°−7°
Wind
7 mph11 km/h, gusts 21 mph33 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 43°6°, low 30°−1°. Typical 46°8° / 19°−7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 42°6°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 35°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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
40°4°–45°7°
Low, likely
28°−2°–35°2°
Typical high / low
46°8° / 19°−7°
Wind
10 mph16 km/h, gusts 42 mph67 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 50°, low 29°.
Tomorrow
Dry, high 49°, low 24°.
Monday
Dry, high 52°, low 29°, warming up.
Rest of week
Highs 40–47°; chance of precipitation on Tuesday.

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

Blackfoot River near Bonner

8.6 mi

Below flood stage

Level: 2.3 ft
Flow: 727 cfs

Forecast peak 2.4 ft Sun 6 AM

Reading from Sat 3:30 PM · NWS gauge page

Rock Creek near Clinton

12 mi

Below flood stage

Level: 5.7 ft
Flow: 480 cfs

Forecast peak 5.7 ft Sun 6 AM

Reading from Sat 3:45 PM · NWS gauge page

Clark Fork River near Drummond

16 mi

Below flood stage

Level: 3.6 ft
Flow: 781 cfs

Forecast peak 3.7 ft Sun 6 AM

Reading from Sat 3:15 PM · NWS gauge page

Clark Fork River above Missoula

17 mi

Below flood stage

Level: 3.0 ft
Flow: 1,960 cfs

Forecast peak 3.1 ft Sun 12 PM

Reading from Sat 3 PM · NWS gauge page

For your home

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

Heating this week

About 73% less heating than a typical week.

This week 57Typical 212

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 41
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 28 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 34°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?

Potomac · official normals 1991–2020 · records 1964–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

On average 8°5° warmer than normal (daily mean temperature).

+11°+6°SunOct 18
+7°+4°MonOct 19
+6°+3°TueOct 20
+8°+4°WedOct 21
+11°+6°ThuOct 22
+14°+8°FriOct 23
+2°+1°SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 26 min; Losing 3 min 12 s a day; shortest Dec 21, 1 h 54 min less
Golden hour: 5:48–6:50 PM; Morning 7:46–8:48 AM
Blue hour: 6:50–7:02 PM; Morning 7:34–7:46 AM; first light 7:34 AM

Stars tonight? Fair

Mostly clear 12–4 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 6:20 AM · rises 5:32 PM
Full moon: Oct 25
New moon: Nov 9

Looking west from Potomac. The highest point on the skyline is about 7,500 ft, 12 mi away.Skyline from USGS elevation data, heights drawn up to 5× taller. Sky, sun and moon as they are now.

Potomac, MT weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Blackfoot River near Bonner

Rock Creek near Clinton

Clark Fork River near Drummond

Clark Fork River above Missoula

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? Fair

Moon