Great Falls, Montana Climate
United States
Pop. 59,638 Elev. 1,014 m / 3,327 ft
TZ: America/Denver (UTC-6) ·
Great Falls has harsh winters with February lows averaging 7°F (-14°C), and warm summers with August highs of 85°F (29°C). Wind chill can push winter lows to -1°F (-18°C). Rain falls on about 12 days per year (10.3 in / 260 mm total), with snow on 9 days and 59 in (1486 mm) of annual accumulation. The city averages 129 sunny days per year.
| Temperature | 85°F (29°C) high | 7°F (-14°C) low |
| Feels like | 85°F (30°C) high | -1°F (-18°C) low |
| Rain | 12 days | 10.3 in (260 mm) /yr |
| Snow | 9 days | 58.5 in (1486 mm) /yr |
| Sky | 129 sunny | 4 stormy |
| Wind | 4.4 mph (2.0 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Aug, Sep
Sky & Air by Month
Cloud cover (%)
61
Jan 68
Feb 69
Mar 49
Apr 49
May 43
Jun 46
Jul 44
Aug 31
Sep 40
Oct 59
Nov 67
Dec Humidity (%)
72
Jan 68
Feb 55
Mar 47
Apr 46
May 45
Jun 46
Jul 46
Aug 46
Sep 51
Oct 52
Nov 61
Dec Weather Days by Month
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 4 mi Great Falls International Airport (GTF)
Ski resort 54 mi Showdown Montana
National park 78 mi Upper Missouri River Breaks National Monument
Mountain peak
(6,345 ft) 26 mi Black Butte
Hospital 1 mi Benefis West
Hiking trail 58 mi 30007
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 29°F -1°C | 17°F -8°C | 0.1 in 2 mm | 16.1 in409 mm | 11 |
| February | 22°F -6°C | 7°F -14°C | 0.1 in 2 mm | 12.0 in305 mm | 7 |
| March | 53°F 12°C | 34°F 1°C | 0.6 in 14 mm | 4.8 in121 mm | 4 |
| April | 60°F 15°C | 35°F 2°C | 0.7 in 17 mm | 9.5 in240 mm | 12 |
| May | 72°F 22°C | 47°F 8°C | 2.1 in 53 mm | — | 12 |
| June | 78°F 26°C | 51°F 11°C | 2.1 in 53 mm | — | 14 |
| July | 85°F 29°C | 57°F 14°C | 1.8 in 47 mm | — | 11 |
| August | 85°F 29°C | 57°F 14°C | 0.8 in 21 mm | — | 13 |
| September | 81°F 27°C | 51°F 11°C | 0.6 in 15 mm | — | 21 |
| October | 60°F 15°C | 40°F 4°C | 0.8 in 21 mm | 1.7 in44 mm | 15 |
| November | 52°F 11°C | 35°F 2°C | 0.3 in 8 mm | 5.3 in135 mm | 5 |
| December | 42°F 6°C | 26°F -3°C | 0.3 in 8 mm | 9.1 in232 mm | 4 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 11 | 0 |
| February | 7 | 0 |
| March | 4 | 0 |
| April | 12 | 0 |
| May | 12 | 0 |
| June | 14 | 1 |
| July | 11 | 2 |
| August | 13 | 0 |
| September | 21 | 1 |
| October | 15 | 0 |
| November | 5 | 0 |
| December | 4 | 0 |