Roundup, Montana Climate
United States
Pop. 1,836 Elev. 979 m / 3,212 ft
TZ: America/Denver (UTC-6) ·
Roundup experiences a wide climate range, from bitterly cold winters of 7°F (-14°C) in February to warm summers reaching 86°F (30°C) in August. Wind chill can push winter lows to 0°F (-18°C). Precipitation occurs on roughly 20 days per year (13.1 in / 334 mm total), with snow on 7 days and 48 in (1219 mm) of annual accumulation. The city averages 140 sunny days per year.
| Temperature | 86°F (30°C) high | 7°F (-14°C) low |
| Feels like | 87°F (31°C) high | 0°F (-18°C) low |
| Rain | 20 days | 13.1 in (334 mm) /yr |
| Snow | 7 days | 48.0 in (1219 mm) /yr |
| Sky | 140 sunny | 9 stormy |
| Wind | 3.6 mph (1.6 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
54
Jan 66
Feb 72
Mar 60
Apr 50
May 45
Jun 42
Jul 36
Aug 36
Sep 43
Oct 57
Nov 66
Dec Humidity (%)
62
Jan 67
Feb 52
Mar 49
Apr 53
May 52
Jun 47
Jul 43
Aug 44
Sep 53
Oct 55
Nov 63
Dec Weather Days by Month
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 44 mi Billings Logan International Airport (BIL)
Ski resort 95 mi Red Lodge Mountain
National park 83 mi Little Bighorn Battlefield National Monument
Mountain peak
(5,611 ft) 32 mi Bald Butte
Hospital 1 mi Roundup Memorial Healthcare
Hiking trail 112 mi null
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 33°F 0°C | 19°F -7°C | 0.1 in 1 mm | 10.6 in269 mm | 11 |
| February | 22°F -6°C | 7°F -14°C | 0.1 in 2 mm | 14.6 in371 mm | 6 |
| March | 55°F 13°C | 34°F 1°C | 0.6 in 15 mm | 3.6 in92 mm | 3 |
| April | 60°F 15°C | 36°F 2°C | 1.3 in 33 mm | 3.8 in96 mm | 7 |
| May | 70°F 21°C | 46°F 8°C | 2.8 in 72 mm | 0.0 in0 mm | 13 |
| June | 77°F 25°C | 52°F 11°C | 2.7 in 68 mm | — | 15 |
| July | 86°F 30°C | 59°F 15°C | 1.8 in 45 mm | — | 18 |
| August | 86°F 30°C | 59°F 15°C | 1.0 in 25 mm | — | 21 |
| September | 80°F 27°C | 53°F 12°C | 0.9 in 23 mm | — | 19 |
| October | 60°F 16°C | 40°F 4°C | 1.4 in 35 mm | 0.1 in1 mm | 15 |
| November | 50°F 10°C | 33°F 0°C | 0.2 in 4 mm | 3.0 in75 mm | 6 |
| December | 42°F 5°C | 24°F -4°C | 0.4 in 11 mm | 12.3 in313 mm | 6 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 11 | 0 |
| February | 6 | 0 |
| March | 3 | 0 |
| April | 7 | 0 |
| May | 13 | 1 |
| June | 15 | 4 |
| July | 18 | 1 |
| August | 21 | 1 |
| September | 19 | 2 |
| October | 15 | 0 |
| November | 6 | 0 |
| December | 6 | 0 |