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Boise, ID vs Phoenix, AZ weather comparison

Boise

ID

Boise picks up around 18 more inches of snow each winter.

Phoenix has around 107 fewer freezing nights a year. Phoenix endures about 109 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 Boise, ID and Phoenix, AZ
BoiseMetricPhoenix
239 daysSunny daysclear or partly cloudy skies307 days
12 inPrecipitationper year7 in
73 daysWet daysrain or snow per year33 days
18 inSnowfallper year0 in
54 daysHot daysabove 90 °F163 days
109 daysFreezing nightsat or below 32 °F2 days
54%Humidityaverage relative35%
53 °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.

BoisePhoenix

Daily highs

406080100JanMarMayJulSepNovBoise, Jan: 39 °FBoise, Feb: 46 °FBoise, Mar: 55 °FBoise, Apr: 62 °FBoise, May: 72 °FBoise, Jun: 81 °FBoise, Jul: 92 °FBoise, Aug: 91 °FBoise, Sep: 80 °FBoise, Oct: 65 °FBoise, Nov: 49 °FBoise, Dec: 39 °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

406080JanMarMayJulSepNovBoise, Jan: 26 °FBoise, Feb: 29 °FBoise, Mar: 35 °FBoise, Apr: 39 °FBoise, May: 47 °FBoise, Jun: 54 °FBoise, Jul: 62 °FBoise, Aug: 61 °FBoise, Sep: 52 °FBoise, Oct: 41 °FBoise, Nov: 32 °FBoise, Dec: 25 °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
Boise high394655627281929180654939
Phoenix high666976839210210510398877565
Boise low262935394754626152413225
Phoenix low444752586775828276645143

Monthly precipitation

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

BoisePhoenix
0.01.02.0JanMarMayJulSepNovBoise, Jan: 1.8 inBoise, Feb: 1.2 inBoise, Mar: 1.4 inBoise, Apr: 1.2 inBoise, May: 1.2 inBoise, Jun: 0.6 inBoise, Jul: 0.1 inBoise, Aug: 0.1 inBoise, Sep: 0.4 inBoise, Oct: 0.9 inBoise, Nov: 1.4 inBoise, Dec: 2.0 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
Boise1.81.21.41.21.20.60.10.10.40.91.42.0
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.

BoisePhoenix
0102030JanMarMayJulSepNovBoise, Jan: 14 daysBoise, Feb: 14 daysBoise, Mar: 15 daysBoise, Apr: 18 daysBoise, May: 20 daysBoise, Jun: 23 daysBoise, Jul: 29 daysBoise, Aug: 28 daysBoise, Sep: 26 daysBoise, Oct: 23 daysBoise, Nov: 16 daysBoise, Dec: 14 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
Boise141415182023292826231614
Phoenix232125272929242628282524

Keep comparing

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

Boise vs another city

See the full Boise, ID climate profile

More Idaho 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).