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Great Falls, MT vs Helena, MT weather comparison

Great Falls

MT

Great Falls picks up around 27 more inches of snow each winter.

Great Falls sees rain or snow on roughly 34 fewer days each year.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Great Falls, MT and Helena, MT
Great FallsMetricHelena
214 daysSunny daysclear or partly cloudy skies201 days
16 inPrecipitationper year21 in
99 daysWet daysrain or snow per year133 days
67 inSnowfallper year40 in
24 daysHot daysabove 90 °F26 days
147 daysFreezing nightsat or below 32 °F171 days
57%Humidityaverage relative65%
47 °FAverage temperatureyear round46 °F

Monthly temperatures

Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.

Great FallsHelena

Daily highs

406080JanMarMayJulSepNovGreat Falls, Jan: 37 °FGreat Falls, Feb: 38 °FGreat Falls, Mar: 48 °FGreat Falls, Apr: 58 °FGreat Falls, May: 67 °FGreat Falls, Jun: 75 °FGreat Falls, Jul: 85 °FGreat Falls, Aug: 84 °FGreat Falls, Sep: 72 °FGreat Falls, Oct: 59 °FGreat Falls, Nov: 45 °FGreat Falls, Dec: 37 °FHelena, Jan: 32 °FHelena, Feb: 37 °FHelena, Mar: 47 °FHelena, Apr: 56 °FHelena, May: 66 °FHelena, Jun: 74 °FHelena, Jul: 86 °FHelena, Aug: 84 °FHelena, Sep: 73 °FHelena, Oct: 57 °FHelena, Nov: 43 °FHelena, Dec: 33 °F

Daily lows

2040JanMarMayJulSepNovGreat Falls, Jan: 17 °FGreat Falls, Feb: 18 °FGreat Falls, Mar: 25 °FGreat Falls, Apr: 33 °FGreat Falls, May: 42 °FGreat Falls, Jun: 49 °FGreat Falls, Jul: 55 °FGreat Falls, Aug: 53 °FGreat Falls, Sep: 45 °FGreat Falls, Oct: 35 °FGreat Falls, Nov: 26 °FGreat Falls, Dec: 19 °FHelena, Jan: 13 °FHelena, Feb: 17 °FHelena, Mar: 24 °FHelena, Apr: 32 °FHelena, May: 41 °FHelena, Jun: 48 °FHelena, Jul: 55 °FHelena, Aug: 53 °FHelena, Sep: 44 °FHelena, Oct: 33 °FHelena, Nov: 23 °FHelena, Dec: 14 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Great Falls high373848586775858472594537
Helena high323747566674868473574333
Great Falls low171825334249555345352619
Helena low131724324148555344332314

Monthly precipitation

Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.

Great FallsHelena
0.02.04.0JanMarMayJulSepNovGreat Falls, Jan: 0.8 inGreat Falls, Feb: 0.7 inGreat Falls, Mar: 1.0 inGreat Falls, Apr: 2.0 inGreat Falls, May: 2.4 inGreat Falls, Jun: 2.9 inGreat Falls, Jul: 1.0 inGreat Falls, Aug: 1.1 inGreat Falls, Sep: 1.4 inGreat Falls, Oct: 1.3 inGreat Falls, Nov: 0.9 inGreat Falls, Dec: 0.8 inHelena, Jan: 0.9 inHelena, Feb: 0.9 inHelena, Mar: 1.4 inHelena, Apr: 2.4 inHelena, May: 3.2 inHelena, Jun: 3.8 inHelena, Jul: 1.7 inHelena, Aug: 1.5 inHelena, Sep: 1.6 inHelena, Oct: 1.5 inHelena, Nov: 1.2 inHelena, Dec: 1.1 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Great Falls0.80.71.02.02.42.91.01.11.41.30.90.8
Helena0.90.91.42.43.23.81.71.51.61.51.21.1

Monthly sunny days

Days each month with clear or partly cloudy skies, so compare the same month between cities.

Great FallsHelena
01020JanMarMayJulSepNovGreat Falls, Jan: 14 daysGreat Falls, Feb: 13 daysGreat Falls, Mar: 14 daysGreat Falls, Apr: 14 daysGreat Falls, May: 17 daysGreat Falls, Jun: 19 daysGreat Falls, Jul: 26 daysGreat Falls, Aug: 26 daysGreat Falls, Sep: 21 daysGreat Falls, Oct: 19 daysGreat Falls, Nov: 16 daysGreat Falls, Dec: 16 daysHelena, Jan: 13 daysHelena, Feb: 12 daysHelena, Mar: 13 daysHelena, Apr: 13 daysHelena, May: 15 daysHelena, Jun: 18 daysHelena, Jul: 26 daysHelena, Aug: 26 daysHelena, Sep: 21 daysHelena, Oct: 18 daysHelena, Nov: 14 daysHelena, Dec: 12 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Great Falls141314141719262621191616
Helena131213131518262621181412

Keep comparing

Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.

Great Falls vs another city

See the full Great Falls, MT climate profile

More Montana cities

Helena vs another city

See the full Helena, MT climate profile

More Montana cities

About this data

Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. 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).