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San Tan Valley climate
Typical historical weather for San Tan Valley, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.
Want today's actual conditions instead? See the current forecast for San Tan Valley.
Annual average
23°C
across all months
Warmest month
40°C
Jul average high
Coolest month
6°C
Jan average low
Annual rainfall
275mm
total per year
Monthly averages
Average daily high/low temperature (band) and monthly rainfall (bars).
● Avg high● Avg low▮ Rainfall
Records on file
Hottest day
47°C
20 June 2017
Coldest day
-1.5°C
3 January 2019
Wettest day
61.2mm
26 September 2025
Windiest day
7.3m/s
22 February 2023
See the detail: San Tan Valley on 26 September 2025.