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Weather in Helena West Side, MT · National Weather Service + NOAA

Helena West Side has a long growing season

Helena West Side has cold, snowy winters and warm summers, with very little rain. A typical July afternoon reaches 84°, a January night drops to 14°, and about 37 inches of snow falls in a normal winter. Normal November highs come to 42°, and lows to 22°.

Winter 35°/15°Spring 56°/30°Summer 80°/48°Fall 57°/31°
Right now
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Sunrise 9:15 am · sunset 7:08 pm

Getting the latest forecast from the National Weather Service…

What stands out about Helena West Side’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
A long growing season142 frost-free days, from May 9 to Sep 30.A dry climateJust 14 inches of rain and melted snow a year, less than 95% of U.S. towns.
A normal year

Where today sits in Helena West Side’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
35° / 15°
13 days with an inch or more of snow
Spring
56° / 30°
Last frost around May 9
Summer
80° / 48°
27 days reach 90° in a normal year
Fall now
57° / 31°
First frost around Sep 30
Pastthe usual first frost (Sep 30). Last frost next spring: May 9
Best months to be outside
JunAugSep
Highs of 62–84° and lows of 40° or more
How much snow does Helena West Side get?About 37 inches a winter.When is it wettest?June, with 2.5 inches.Is it warmer than it used to be?+1.3° vs. the 20th century.

Weather talk

Road reports, first frosts and storm memories from neighbors in Helena West Side.

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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Helena West Side itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Helena Rgnl Airport, MT (7 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.