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WeatherLive › Montana › Great Falls

Great Falls, MT Weather (59401)

ZIP codes: 59401 · 59402 · 59403
Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherGreat Falls · 9:36 AM MDT
87° | 57°
69°F
Feels like 65°
Mostly cloudy
WindSW 6 mph · Gusts 10 mph
Precip57% · 0.06 in
Humidity46% · Dew point 48°
UV index6 Moderate
Air Quality29 Good
Pressure29.94 inHg
Visibility6 mi
Sunrise / Sunset6:25 AM · 8:32 PM · 14h 7m

Weather map — Great Falls

Full radar →
Now
69°
10%
6 mph
10:00
75°
10%
7 mph
11:00
80°
10%
8 mph
12:00
83°
9%
9 mph
13:00
85°
9%
10 mph
14:00
87°
9%
10 mph
15:00
83°
10%
10 mph
16:00
83°
19%
11 mph
17:00
81°
20%
19 mph
18:00
80°
20%
9 mph
19:00
77°
36%
8 mph
20:00
74°
36%
6 mph
21:00
70°
36%
6 mph
22:00
73°
1%
5 mph
23:00
70°
5%
4 mph
00:00
68°
1%
6 mph
01:00
67°
1%
6 mph
02:00
66°
1%
7 mph
03:00
64°
1%
8 mph
04:00
63°
4%
8 mph
05:00
62°
10%
7 mph
06:00
62°
9%
8 mph
07:00
62°
9%
8 mph
08:00
66°
7%
8 mph

Today · Tue 8/18

High 87°
57% / 0.06 in

Mostly cloudy. Winds W at 19 mph.

Tonight · Tue 8/18

Low 62°
36% / 0.01 in

Showers. Winds S at 6 mph.

Tomorrow · Wed 8/19

90° | 62°
3% / –

Sunny. Winds N at 14 mph.

7-day trend

Great Falls · temperature + precipitation

10-day forecast

Updated 9:36 AM

Details & indices

Wind
6 mph SW
Gusts 10 mph
Humidity
46%
Dew point 48°
Pressure
29.94 inHg
Rising
UV index
6 — Moderate
High today
Air Quality
Good
AQI 29 · US EPA
Allergy
Very high
Grass
Visibility
6 mi
Clear view
Allergy — Great Falls

🌿 Conditions right now

View all →
Birch
None
Grass
Very high
Oak
None
Alder
None
Hazel
None
Mugwort
Moderate
Ragweed
None

Sun & moon

Sunrise6:25 AM
Sunset8:32 PM
Length of day14h 7m
Moonrise1:39 PM
Moonset10:39 PM
Moon phase🌓 First Quarter · 36%
Next full moonAug 27 Sturgeon Moon
Latitude47.5002°N
Longitude-111.3008°E

Water temps nearby

View all →
No beaches within 50 miles
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Fair
Line-drying weather
Grilling
Poor
Fire up the grill
Running
Poor
Lace up outside
Patio
Poor
Dinner outdoors
Data sources · Tuesday, August 18
Where the Great Falls forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 47.5002°N, -111.3008°.
NBM + global weather models
Updated: 9:36 AM
ZIP codes in Great Falls
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59401
Great Falls
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59402
Great Falls
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59403
Great Falls
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59404
Great Falls
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59405
Great Falls
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59406
Great Falls
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59414
Great Falls
Weather in Great Falls
The 10-day span for Great Falls runs from a high near 100° on Saturday down to 57° overnight on Tuesday. About 0.24 in of precipitation is expected in total; the most likely wet day is Saturday (58% chance). Expect a blustery spell — gusts near 38 mph on Saturday. The NWS alert board for this area is currently clear. Right now Great Falls is running about 14° warmer than Lethbridge. Longer view: mountain climate — intense sun, cool nights and snow well beyond 'winter'.
Great Falls, MT · Elev 3,330 ft · 47.50°N, 111.30°W · Montana · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 9:36 AM