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Grinnell, IA vs Phoenix, AZ weather comparison

Grinnell

IA

Grinnell picks up around 31 more inches of snow each winter.

Phoenix has around 152 fewer freezing nights a year. Phoenix endures about 152 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 Grinnell, IA and Phoenix, AZ
GrinnellMetricPhoenix
199 daysSunny daysclear or partly cloudy skies307 days
39 inPrecipitationper year7 in
117 daysWet daysrain or snow per year33 days
31 inSnowfallper year0 in
11 daysHot daysabove 90 °F163 days
153 daysFreezing nightsat or below 32 °F2 days
70%Humidityaverage relative35%
48 °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.

GrinnellPhoenix

Daily highs

255075100JanMarMayJulSepNovGrinnell, Jan: 28 °FGrinnell, Feb: 33 °FGrinnell, Mar: 46 °FGrinnell, Apr: 59 °FGrinnell, May: 70 °FGrinnell, Jun: 80 °FGrinnell, Jul: 83 °FGrinnell, Aug: 81 °FGrinnell, Sep: 75 °FGrinnell, Oct: 62 °FGrinnell, Nov: 47 °FGrinnell, Dec: 34 °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

255075JanMarMayJulSepNovGrinnell, Jan: 10 °FGrinnell, Feb: 14 °FGrinnell, Mar: 25 °FGrinnell, Apr: 35 °FGrinnell, May: 47 °FGrinnell, Jun: 58 °FGrinnell, Jul: 62 °FGrinnell, Aug: 59 °FGrinnell, Sep: 50 °FGrinnell, Oct: 38 °FGrinnell, Nov: 26 °FGrinnell, Dec: 16 °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
Grinnell high283346597080838175624734
Phoenix high666976839210210510398877565
Grinnell low101425354758625950382616
Phoenix low444752586775828276645143

Monthly precipitation

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

GrinnellPhoenix
0.02.04.0JanMarMayJulSepNovGrinnell, Jan: 1.3 inGrinnell, Feb: 1.6 inGrinnell, Mar: 2.7 inGrinnell, Apr: 4.5 inGrinnell, May: 5.3 inGrinnell, Jun: 5.2 inGrinnell, Jul: 3.9 inGrinnell, Aug: 3.9 inGrinnell, Sep: 3.9 inGrinnell, Oct: 2.9 inGrinnell, Nov: 2.2 inGrinnell, Dec: 1.7 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
Grinnell1.31.62.74.55.35.23.93.93.92.92.21.7
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.

GrinnellPhoenix
0102030JanMarMayJulSepNovGrinnell, Jan: 13 daysGrinnell, Feb: 13 daysGrinnell, Mar: 16 daysGrinnell, Apr: 15 daysGrinnell, May: 16 daysGrinnell, Jun: 16 daysGrinnell, Jul: 21 daysGrinnell, Aug: 21 daysGrinnell, Sep: 21 daysGrinnell, Oct: 18 daysGrinnell, Nov: 16 daysGrinnell, 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
Grinnell131316151616212121181614
Phoenix232125272929242628282524

Keep comparing

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

Grinnell vs another city

See the full Grinnell, IA climate profile

More Iowa 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).