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Great Falls, MT vs Phoenix, AZ weather comparison

Great Falls

MT

Great Falls picks up around 67 more inches of snow each winter.

Phoenix has around 146 fewer freezing nights a year. Phoenix endures about 139 more days above 90 °F each year.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Great Falls, MT and Phoenix, AZ
Great FallsMetricPhoenix
214 daysSunny daysclear or partly cloudy skies307 days
16 inPrecipitationper year7 in
99 daysWet daysrain or snow per year33 days
67 inSnowfallper year0 in
24 daysHot daysabove 90 °F163 days
147 daysFreezing nightsat or below 32 °F2 days
57%Humidityaverage relative35%
47 °FAverage temperatureyear round74 °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 FallsPhoenix

Daily highs

406080100JanMarMayJulSepNovGreat 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 °FPhoenix, Jan: 66 °FPhoenix, Feb: 69 °FPhoenix, Mar: 76 °FPhoenix, Apr: 83 °FPhoenix, May: 92 °FPhoenix, Jun: 102 °FPhoenix, Jul: 105 °FPhoenix, Aug: 103 °FPhoenix, Sep: 98 °FPhoenix, Oct: 87 °FPhoenix, Nov: 75 °FPhoenix, Dec: 65 °F

Daily lows

20406080JanMarMayJulSepNovGreat 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 °FPhoenix, Jan: 44 °FPhoenix, Feb: 47 °FPhoenix, Mar: 52 °FPhoenix, Apr: 58 °FPhoenix, May: 67 °FPhoenix, Jun: 75 °FPhoenix, Jul: 82 °FPhoenix, Aug: 82 °FPhoenix, Sep: 76 °FPhoenix, Oct: 64 °FPhoenix, Nov: 51 °FPhoenix, Dec: 43 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Great Falls high373848586775858472594537
Phoenix high666976839210210510398877565
Great Falls low171825334249555345352619
Phoenix low444752586775828276645143

Monthly precipitation

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

Great FallsPhoenix
0.01.02.03.0JanMarMayJulSepNovGreat 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 inPhoenix, Jan: 0.9 inPhoenix, Feb: 1.1 inPhoenix, Mar: 0.8 inPhoenix, Apr: 0.2 inPhoenix, May: 0.1 inPhoenix, Jun: 0.1 inPhoenix, Jul: 0.6 inPhoenix, Aug: 0.9 inPhoenix, Sep: 0.7 inPhoenix, Oct: 0.6 inPhoenix, Nov: 0.5 inPhoenix, Dec: 0.8 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
Phoenix0.91.10.80.20.10.10.60.90.70.60.50.8

Monthly sunny days

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

Great FallsPhoenix
0102030JanMarMayJulSepNovGreat 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 daysPhoenix, Jan: 23 daysPhoenix, Feb: 21 daysPhoenix, Mar: 25 daysPhoenix, Apr: 27 daysPhoenix, May: 29 daysPhoenix, Jun: 29 daysPhoenix, Jul: 24 daysPhoenix, Aug: 26 daysPhoenix, Sep: 28 daysPhoenix, Oct: 28 daysPhoenix, Nov: 25 daysPhoenix, Dec: 24 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Great Falls141314141719262621191616
Phoenix232125272929242628282524

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

Phoenix vs another city

See the full Phoenix, AZ climate profile

More Arizona 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).