Helena Valley Northwest, Montana Climate
United States
Pop. 3,482 Elev. 1,208 m / 3,963 ft
TZ: America/Denver (UTC-6) ·
Winters in Helena Valley Northwest are severe, with temperatures dropping to 7°F (-14°C) in February, while summers bring mild highs of 84°F (29°C) in July. Expect around 14 rainy days annually (10.4 in / 263 mm total), with snow on 8 days and 66 in (1669 mm) of annual accumulation. The city averages 125 sunny days per year. Nearby lake water reaches 69°F (21°C) in summer.
| Temperature | 84°F (29°C) high | 7°F (-14°C) low |
| Feels like | 84°F (29°C) high | 5°F (-15°C) low |
| Rain | 14 days | 10.4 in (263 mm) /yr |
| Snow | 8 days | 65.7 in (1669 mm) /yr |
| Sky | 125 sunny | 6 stormy |
| Wind | 2.8 mph (1.3 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 (%)
63
Jan 69
Feb 68
Mar 50
Apr 50
May 43
Jun 48
Jul 43
Aug 34
Sep 45
Oct 65
Nov 70
Dec Humidity (%)
79
Jan 71
Feb 61
Mar 51
Apr 51
May 44
Jun 43
Jul 45
Aug 42
Sep 60
Oct 66
Nov 69
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 9 mi Helena Regional Airport (HLN)
Ski resort 13 mi Great Divide Ski Area
National park 72 mi
Mountain peak
(5,233 ft) 4 mi Scratchgravel Hills
Hospital 8 mi Veterans Administration Medical Center
Hiking trail 20 mi CDT - Idaho & Montana Section
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 27°F -3°C | 11°F -12°C | 0.0 in 0 mm | 13.4 in339 mm | 6 |
| February | 24°F -5°C | 7°F -14°C | 0.2 in 6 mm | 16.3 in413 mm | 3 |
| March | 49°F 10°C | 29°F -2°C | 0.4 in 10 mm | 5.3 in134 mm | 4 |
| April | 56°F 13°C | 32°F 0°C | 0.6 in 14 mm | 7.1 in181 mm | 11 |
| May | 68°F 20°C | 42°F 6°C | 2.4 in 60 mm | 2.6 in65 mm | 13 |
| June | 76°F 24°C | 48°F 9°C | 1.6 in 42 mm | — | 16 |
| July | 84°F 29°C | 54°F 12°C | 1.6 in 40 mm | — | 13 |
| August | 83°F 28°C | 54°F 12°C | 0.8 in 20 mm | — | 15 |
| September | 80°F 26°C | 49°F 9°C | 0.5 in 12 mm | — | 18 |
| October | 56°F 13°C | 35°F 1°C | 0.9 in 22 mm | 5.9 in150 mm | 17 |
| November | 48°F 9°C | 31°F -1°C | 0.5 in 14 mm | 4.8 in121 mm | 5 |
| December | 40°F 5°C | 25°F -4°C | 1.0 in 25 mm | 10.4 in265 mm | 4 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 6 | 0 |
| February | 3 | 0 |
| March | 4 | 0 |
| April | 11 | 1 |
| May | 13 | 1 |
| June | 16 | 2 |
| July | 13 | 1 |
| August | 15 | 0 |
| September | 18 | 1 |
| October | 17 | 0 |
| November | 5 | 0 |
| December | 4 | 0 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 35°F 2°C |
| February | 32°F 0°C |
| March | 32°F 0°C |
| April | 33°F 1°C |
| May | 39°F 4°C |
| June | 47°F 8°C |
| July | 62°F 16°C |
| August | 69°F 21°C |
| September | 66°F 19°C |
| October | 53°F 12°C |
| November | 45°F 7°C |
| December | 40°F 5°C |