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Helena Valley Northwest, MT weather and climate

Lewis and Clark County, MT · population 5,070 · about 3,957 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at Helena Valley Northwest's own coordinates.

The year at a glance

Sunny days
202
clear or partly cloudy, per year
Precipitation
16 in
per year
Wet days
108
rain or snow per year
Snowfall
34 in
per year
Hot days
19
above 90 °F
Freezing nights
176
at or below 32 °F
Humidity
64%
average relative
Average temperature
44 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
255075JanMarMayJulSepNovDaily high, Jan: 32 °FDaily high, Feb: 36 °FDaily high, Mar: 46 °FDaily high, Apr: 55 °FDaily high, May: 64 °FDaily high, Jun: 73 °FDaily high, Jul: 83 °FDaily high, Aug: 83 °FDaily high, Sep: 71 °FDaily high, Oct: 56 °FDaily high, Nov: 41 °FDaily high, Dec: 32 °FDaily low, Jan: 14 °FDaily low, Feb: 16 °FDaily low, Mar: 23 °FDaily low, Apr: 30 °FDaily low, May: 39 °FDaily low, Jun: 46 °FDaily low, Jul: 53 °FDaily low, Aug: 51 °FDaily low, Sep: 43 °FDaily low, Oct: 33 °FDaily low, Nov: 22 °FDaily low, Dec: 15 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high323646556473838371564132
Daily low141623303946535143332215

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.01.02.0JanMarMayJulSepNovHelena Valley Northwest, Jan: 0.8 inHelena Valley Northwest, Feb: 0.8 inHelena Valley Northwest, Mar: 1.1 inHelena Valley Northwest, Apr: 1.9 inHelena Valley Northwest, May: 2.3 inHelena Valley Northwest, Jun: 2.6 inHelena Valley Northwest, Jul: 1.0 inHelena Valley Northwest, Aug: 0.9 inHelena Valley Northwest, Sep: 1.2 inHelena Valley Northwest, Oct: 1.2 inHelena Valley Northwest, Nov: 1.0 inHelena Valley Northwest, Dec: 0.9 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Helena Valley Northwest0.80.81.11.92.32.61.00.91.21.21.00.9

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovHelena Valley Northwest, Jan: 12 daysHelena Valley Northwest, Feb: 12 daysHelena Valley Northwest, Mar: 14 daysHelena Valley Northwest, Apr: 13 daysHelena Valley Northwest, May: 16 daysHelena Valley Northwest, Jun: 18 daysHelena Valley Northwest, Jul: 26 daysHelena Valley Northwest, Aug: 26 daysHelena Valley Northwest, Sep: 21 daysHelena Valley Northwest, Oct: 18 daysHelena Valley Northwest, Nov: 13 daysHelena Valley Northwest, Dec: 12 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Helena Valley Northwest121214131618262621181312

Compare Helena Valley Northwest with another city

Nearby cities and popular picks. Any two cities can be compared from the home page.

See weather for every covered Montana city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).