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Helena Valley Southeast, MT vs Phoenix, AZ weather comparison

Helena Valley Southeast

MT

Helena Valley Southeast picks up around 40 more inches of snow each winter.

Phoenix has around 173 fewer freezing nights a year. Phoenix endures about 138 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 Helena Valley Southeast, MT and Phoenix, AZ
Helena Valley SoutheastMetricPhoenix
201 daysSunny daysclear or partly cloudy skies307 days
21 inPrecipitationper year7 in
133 daysWet daysrain or snow per year33 days
40 inSnowfallper year0 in
25 daysHot daysabove 90 °F163 days
174 daysFreezing nightsat or below 32 °F2 days
65%Humidityaverage relative35%
45 °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.

Helena Valley SoutheastPhoenix

Daily highs

5075100JanMarMayJulSepNovHelena Valley Southeast, Jan: 32 °FHelena Valley Southeast, Feb: 37 °FHelena Valley Southeast, Mar: 47 °FHelena Valley Southeast, Apr: 56 °FHelena Valley Southeast, May: 66 °FHelena Valley Southeast, Jun: 74 °FHelena Valley Southeast, Jul: 85 °FHelena Valley Southeast, Aug: 84 °FHelena Valley Southeast, Sep: 73 °FHelena Valley Southeast, Oct: 57 °FHelena Valley Southeast, Nov: 42 °FHelena Valley Southeast, Dec: 33 °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

20406080JanMarMayJulSepNovHelena Valley Southeast, Jan: 13 °FHelena Valley Southeast, Feb: 17 °FHelena Valley Southeast, Mar: 24 °FHelena Valley Southeast, Apr: 32 °FHelena Valley Southeast, May: 41 °FHelena Valley Southeast, Jun: 48 °FHelena Valley Southeast, Jul: 54 °FHelena Valley Southeast, Aug: 52 °FHelena Valley Southeast, Sep: 44 °FHelena Valley Southeast, Oct: 33 °FHelena Valley Southeast, Nov: 22 °FHelena Valley Southeast, Dec: 14 °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
Helena Valley Southeast high323747566674858473574233
Phoenix high666976839210210510398877565
Helena Valley Southeast low131724324148545244332214
Phoenix low444752586775828276645143

Monthly precipitation

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

Helena Valley SoutheastPhoenix
0.02.04.0JanMarMayJulSepNovHelena Valley Southeast, Jan: 0.9 inHelena Valley Southeast, Feb: 0.9 inHelena Valley Southeast, Mar: 1.4 inHelena Valley Southeast, Apr: 2.4 inHelena Valley Southeast, May: 3.2 inHelena Valley Southeast, Jun: 3.8 inHelena Valley Southeast, Jul: 1.7 inHelena Valley Southeast, Aug: 1.5 inHelena Valley Southeast, Sep: 1.6 inHelena Valley Southeast, Oct: 1.5 inHelena Valley Southeast, Nov: 1.2 inHelena Valley Southeast, Dec: 1.1 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
Helena Valley Southeast0.90.91.42.43.23.81.71.51.61.51.21.1
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.

Helena Valley SoutheastPhoenix
0102030JanMarMayJulSepNovHelena Valley Southeast, Jan: 13 daysHelena Valley Southeast, Feb: 12 daysHelena Valley Southeast, Mar: 13 daysHelena Valley Southeast, Apr: 13 daysHelena Valley Southeast, May: 15 daysHelena Valley Southeast, Jun: 18 daysHelena Valley Southeast, Jul: 26 daysHelena Valley Southeast, Aug: 26 daysHelena Valley Southeast, Sep: 21 daysHelena Valley Southeast, Oct: 18 daysHelena Valley Southeast, Nov: 14 daysHelena Valley Southeast, Dec: 12 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
Helena Valley Southeast131213131518262621181412
Phoenix232125272929242628282524

Keep comparing

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

Helena Valley Southeast vs another city

See the full Helena Valley Southeast, 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).