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Decatur, IL vs Phoenix, AZ weather comparison

Decatur

IL

Decatur picks up around 14 more inches of snow each winter.

Phoenix has around 108 fewer freezing nights a year. Phoenix endures about 137 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 Decatur, IL and Phoenix, AZ
DecaturMetricPhoenix
194 daysSunny daysclear or partly cloudy skies307 days
41 inPrecipitationper year7 in
120 daysWet daysrain or snow per year33 days
14 inSnowfallper year0 in
26 daysHot daysabove 90 °F163 days
110 daysFreezing nightsat or below 32 °F2 days
69%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.

DecaturPhoenix

Daily highs

5075100JanMarMayJulSepNovDecatur, Jan: 34 °FDecatur, Feb: 39 °FDecatur, Mar: 51 °FDecatur, Apr: 64 °FDecatur, May: 74 °FDecatur, Jun: 82 °FDecatur, Jul: 85 °FDecatur, Aug: 84 °FDecatur, Sep: 78 °FDecatur, Oct: 65 °FDecatur, Nov: 51 °FDecatur, 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

20406080JanMarMayJulSepNovDecatur, Jan: 20 °FDecatur, Feb: 24 °FDecatur, Mar: 33 °FDecatur, Apr: 43 °FDecatur, May: 54 °FDecatur, Jun: 63 °FDecatur, Jul: 66 °FDecatur, Aug: 64 °FDecatur, Sep: 56 °FDecatur, Oct: 45 °FDecatur, Nov: 34 °FDecatur, 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
Decatur high343951647482858478655139
Phoenix high666976839210210510398877565
Decatur low202433435463666456453425
Phoenix low444752586775828276645143

Monthly precipitation

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

DecaturPhoenix
0.02.04.0JanMarMayJulSepNovDecatur, Jan: 2.7 inDecatur, Feb: 2.3 inDecatur, Mar: 3.3 inDecatur, Apr: 4.6 inDecatur, May: 4.8 inDecatur, Jun: 4.3 inDecatur, Jul: 3.6 inDecatur, Aug: 3.0 inDecatur, Sep: 3.2 inDecatur, Oct: 3.5 inDecatur, Nov: 3.5 inDecatur, Dec: 2.5 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
Decatur2.72.33.34.64.84.33.63.03.23.53.52.5
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.

DecaturPhoenix
0102030JanMarMayJulSepNovDecatur, Jan: 13 daysDecatur, Feb: 12 daysDecatur, Mar: 14 daysDecatur, Apr: 14 daysDecatur, May: 15 daysDecatur, Jun: 17 daysDecatur, Jul: 21 daysDecatur, Aug: 21 daysDecatur, Sep: 21 daysDecatur, Oct: 18 daysDecatur, Nov: 16 daysDecatur, Dec: 13 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
Decatur131214141517212121181613
Phoenix232125272929242628282524

Keep comparing

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

Decatur vs another city

See the full Decatur, IL climate profile

More Illinois 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).