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Casa Grande, AZ vs San Tan Valley, AZ weather comparison

Casa Grande

AZ

Casa Grande and San Tan Valley have remarkably similar climates.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Casa Grande, AZ and San Tan Valley, AZ
Casa GrandeMetricSan Tan Valley
309 daysSunny daysclear or partly cloudy skies306 days
8 inPrecipitationper year10 in
31 daysWet daysrain or snow per year35 days
0 inSnowfallper year0 in
182 daysHot daysabove 90 °F168 days
17 daysFreezing nightsat or below 32 °F14 days
34%Humidityaverage relative35%
72 °FAverage temperatureyear round72 °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.

Casa GrandeSan Tan Valley

Daily highs

80100JanMarMayJulSepNovCasa Grande, Jan: 68 °FCasa Grande, Feb: 72 °FCasa Grande, Mar: 80 °FCasa Grande, Apr: 87 °FCasa Grande, May: 96 °FCasa Grande, Jun: 106 °FCasa Grande, Jul: 107 °FCasa Grande, Aug: 105 °FCasa Grande, Sep: 100 °FCasa Grande, Oct: 90 °FCasa Grande, Nov: 77 °FCasa Grande, Dec: 67 °FSan Tan Valley, Jan: 66 °FSan Tan Valley, Feb: 70 °FSan Tan Valley, Mar: 77 °FSan Tan Valley, Apr: 85 °FSan Tan Valley, May: 94 °FSan Tan Valley, Jun: 103 °FSan Tan Valley, Jul: 105 °FSan Tan Valley, Aug: 103 °FSan Tan Valley, Sep: 99 °FSan Tan Valley, Oct: 88 °FSan Tan Valley, Nov: 75 °FSan Tan Valley, Dec: 65 °F

Daily lows

406080JanMarMayJulSepNovCasa Grande, Jan: 39 °FCasa Grande, Feb: 41 °FCasa Grande, Mar: 47 °FCasa Grande, Apr: 53 °FCasa Grande, May: 60 °FCasa Grande, Jun: 70 °FCasa Grande, Jul: 78 °FCasa Grande, Aug: 77 °FCasa Grande, Sep: 70 °FCasa Grande, Oct: 57 °FCasa Grande, Nov: 45 °FCasa Grande, Dec: 38 °FSan Tan Valley, Jan: 40 °FSan Tan Valley, Feb: 43 °FSan Tan Valley, Mar: 48 °FSan Tan Valley, Apr: 53 °FSan Tan Valley, May: 61 °FSan Tan Valley, Jun: 70 °FSan Tan Valley, Jul: 78 °FSan Tan Valley, Aug: 77 °FSan Tan Valley, Sep: 71 °FSan Tan Valley, Oct: 59 °FSan Tan Valley, Nov: 47 °FSan Tan Valley, Dec: 39 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Casa Grande high6872808796106107105100907767
San Tan Valley high667077859410310510399887565
Casa Grande low394147536070787770574538
San Tan Valley low404348536170787771594739

Monthly precipitation

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

Casa GrandeSan Tan Valley
0.00.51.01.5JanMarMayJulSepNovCasa Grande, Jan: 1.0 inCasa Grande, Feb: 1.1 inCasa Grande, Mar: 0.7 inCasa Grande, Apr: 0.2 inCasa Grande, May: 0.1 inCasa Grande, Jun: 0.1 inCasa Grande, Jul: 0.8 inCasa Grande, Aug: 1.1 inCasa Grande, Sep: 0.9 inCasa Grande, Oct: 0.5 inCasa Grande, Nov: 0.5 inCasa Grande, Dec: 0.9 inSan Tan Valley, Jan: 1.5 inSan Tan Valley, Feb: 1.6 inSan Tan Valley, Mar: 1.1 inSan Tan Valley, Apr: 0.3 inSan Tan Valley, May: 0.2 inSan Tan Valley, Jun: 0.1 inSan Tan Valley, Jul: 0.8 inSan Tan Valley, Aug: 1.1 inSan Tan Valley, Sep: 1.0 inSan Tan Valley, Oct: 0.7 inSan Tan Valley, Nov: 0.7 inSan Tan Valley, Dec: 1.3 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Casa Grande1.01.10.70.20.10.10.81.10.90.50.50.9
San Tan Valley1.51.61.10.30.20.10.81.11.00.70.71.3

Monthly sunny days

Days each month with clear or partly cloudy skies, so compare the same month between cities.

Casa GrandeSan Tan Valley
0102030JanMarMayJulSepNovCasa Grande, Jan: 24 daysCasa Grande, Feb: 21 daysCasa Grande, Mar: 25 daysCasa Grande, Apr: 27 daysCasa Grande, May: 29 daysCasa Grande, Jun: 28 daysCasa Grande, Jul: 24 daysCasa Grande, Aug: 26 daysCasa Grande, Sep: 28 daysCasa Grande, Oct: 29 daysCasa Grande, Nov: 26 daysCasa Grande, Dec: 24 daysSan Tan Valley, Jan: 23 daysSan Tan Valley, Feb: 21 daysSan Tan Valley, Mar: 25 daysSan Tan Valley, Apr: 27 daysSan Tan Valley, May: 28 daysSan Tan Valley, Jun: 28 daysSan Tan Valley, Jul: 24 daysSan Tan Valley, Aug: 25 daysSan Tan Valley, Sep: 28 daysSan Tan Valley, Oct: 28 daysSan Tan Valley, Nov: 25 daysSan Tan Valley, Dec: 24 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Casa Grande242125272928242628292624
San Tan Valley232125272828242528282524

Keep comparing

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

Casa Grande vs another city

See the full Casa Grande, AZ climate profile

More Arizona cities

San Tan Valley vs another city

See the full San Tan Valley, 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).