San Tan Valley, AZ Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for San Tan Valley, a community in Pinal County, Arizona.

Overnight

51°F

Clear

Clear. Low around 51, with temperatures rising to around 53 overnight. Southeast wind around 5 mph.

7-day forecast for San Tan Valley

When	Temp	Forecast	Wind	Precip
Overnight	51°F	Clear	5 mph SE	0%
Wednesday	76°F	Sunny	0 to 5 mph SSW	0%
Wednesday Night	51°F	Clear	0 to 5 mph SSE	0%
Thursday	76°F	Mostly Sunny	0 to 5 mph NNE	0%
Thursday Night	53°F	Partly Cloudy	0 to 5 mph NNE	0%
Friday	78°F	Mostly Sunny	0 to 5 mph NNE	2%
Friday Night	55°F	Mostly Clear	5 mph NNE	2%
Saturday	79°F	Sunny	5 to 10 mph NE	0%
Saturday Night	56°F	Clear	5 to 10 mph NE	0%
Sunday	79°F	Sunny	5 to 15 mph ENE	0%
Sunday Night	55°F	Partly Cloudy	5 to 10 mph ENE	0%
Monday	79°F	Mostly Sunny	5 to 10 mph E	2%
Monday Night	55°F	Partly Cloudy	5 mph E	2%
Tuesday	77°F	Mostly Sunny	0 to 5 mph SE	2%

Forecast source: National Weather Service (api.weather.gov) for San Tan Valley (33.179, -111.563). Updated through the day.

Growing snapshot for San Tan Valley

Last spring frost

Feb 1

First fall frost

Dec 11

Growing season

315 days

Hardiness zone

More local growing data for San Tan Valley: nearby ZIP 85143 weather · frost dates · planting calendar · Arizona frost dates

Nearby towns & communities

Ak-Chin Village Apache Junction Arizona City Blackwater Cactus Forest Campo Bonito Casa Blanca Casa Grande Chuichu Coolidge Dudleyville Eloy Florence Gold Canyon Kearny Kohatk Lower Santan Village Mammoth Marana Maricopa Oracle Picacho Queen Creek Queen Valley Red Rock Sacate Village Sacaton Sacaton Flats Village Saddlebrooke San Manuel

All Arizona locations ›

Climate data from the nearest NOAA station, Chandler Heights, Az (10 mi from San Tan Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.