San Tan Valley, AZ Weather & Growing Conditions
Overnight
51°F
Clear
Clear, with a low around 51. Southeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Clear | 5 mph SE | 0% |
| Wednesday | 75°F | Sunny | 0 to 5 mph SSW | 0% |
| Wednesday Night | 50°F | Clear | 0 to 5 mph ESE | 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 | 77°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 | 78°F | Sunny | 5 to 15 mph E | 0% |
| Sunday Night | 55°F | Partly Cloudy | 5 to 10 mph ENE | 0% |
| Monday | 78°F | Mostly Sunny | 5 to 10 mph E | 2% |
| Monday Night | 55°F | Partly Cloudy | 5 mph E | 2% |
| Tuesday | 76°F | Mostly Sunny | 0 to 5 mph SE | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Tan Valley, AZ
Last spring frost
Feb 1
First fall frost
Dec 11
Growing season
315 days
Hardiness zone
9b
Explore more for San Tan Valley, AZ: full frost dates · planting calendar · Arizona frost dates
Climate data from the nearest NOAA station, Chandler Heights, Az (10 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.