Skip to content
VSWeather

Nampa, ID vs Phoenix, AZ weather comparison

Nampa

ID

Phoenix has around 131 fewer freezing nights a year.

Phoenix endures about 105 more days above 90 °F each year. Phoenix sees rain or snow on roughly 37 fewer days each year.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Nampa, ID and Phoenix, AZ
NampaMetricPhoenix
239 daysSunny daysclear or partly cloudy skies307 days
11 inPrecipitationper year7 in
70 daysWet daysrain or snow per year33 days
10 inSnowfallper year0 in
58 daysHot daysabove 90 °F163 days
133 daysFreezing nightsat or below 32 °F2 days
51%Humidityaverage relative35%
52 °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.

NampaPhoenix

Daily highs

406080100JanMarMayJulSepNovNampa, Jan: 40 °FNampa, Feb: 47 °FNampa, Mar: 57 °FNampa, Apr: 64 °FNampa, May: 74 °FNampa, Jun: 83 °FNampa, Jul: 93 °FNampa, Aug: 92 °FNampa, Sep: 81 °FNampa, Oct: 67 °FNampa, Nov: 51 °FNampa, Dec: 40 °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

20406080JanMarMayJulSepNovNampa, Jan: 23 °FNampa, Feb: 26 °FNampa, Mar: 32 °FNampa, Apr: 36 °FNampa, May: 44 °FNampa, Jun: 51 °FNampa, Jul: 57 °FNampa, Aug: 56 °FNampa, Sep: 47 °FNampa, Oct: 37 °FNampa, Nov: 28 °FNampa, Dec: 23 °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
Nampa high404757647483939281675140
Phoenix high666976839210210510398877565
Nampa low232632364451575647372823
Phoenix low444752586775828276645143

Monthly precipitation

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

NampaPhoenix
0.00.51.01.5JanMarMayJulSepNovNampa, Jan: 1.6 inNampa, Feb: 1.0 inNampa, Mar: 1.2 inNampa, Apr: 1.1 inNampa, May: 1.1 inNampa, Jun: 0.6 inNampa, Jul: 0.1 inNampa, Aug: 0.1 inNampa, Sep: 0.4 inNampa, Oct: 0.8 inNampa, Nov: 1.2 inNampa, Dec: 1.6 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
Nampa1.61.01.21.11.10.60.10.10.40.81.21.6
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.

NampaPhoenix
0102030JanMarMayJulSepNovNampa, Jan: 14 daysNampa, Feb: 14 daysNampa, Mar: 15 daysNampa, Apr: 17 daysNampa, May: 20 daysNampa, Jun: 23 daysNampa, Jul: 29 daysNampa, Aug: 28 daysNampa, Sep: 26 daysNampa, Oct: 23 daysNampa, Nov: 16 daysNampa, 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
Nampa141415172023292826231614
Phoenix232125272929242628282524

Keep comparing

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

Nampa vs another city

See the full Nampa, 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).