Weather in San Tan Valley, AZ
Updated 2026-09-26 19:45 local time · ZIP codes 85140, 85143
Patchy rain nearby
No government weather alerts were returned for this location at the latest update.
Next hours
67°27% rain
66°31% rain66°40% rain66°39% rain66°40% rain66°46% rain65°34% rain64°37% rain
64°42% rain64°21% rain
63°22% rain
66°18% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
There is a moderate rain chance, peaking near 46%.
It feels like 70°F with winds near 4 mph.
67°F, 16% rain chance and 4 mph wind.
Visibility is around 6 mi; gusts may reach 15 mph.
Current temperature is 67°F, wind 4 mph, rain chance up to 46%.
UV index is 0.
Local weather characteristics in San Tan Valley
Arizona weather is strongly shaped by elevation: desert valleys are very hot and dry, while higher terrain is cooler and can receive winter snow. Summer monsoon storms can develop quickly.
San Tan Valley is part of the West weather region. The forecast point is near 22.40°N latitude and 103.50°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
San Tan Valley weather today
Patchy rain nearby and 67°F in San Tan Valley, AZ. Today's high is 79°F with a 51% rain chance. Winds are around 4 mph with gusts near 15 mph. Relative humidity is 93%, pressure is 29.84 inHg, and visibility is about 6 miles.
Tonight and tomorrow in San Tan Valley
Sunrise is at 05:55 AM and sunset is at 05:58 PM. Tomorrow's forecast calls for Patchy rain nearby with a high near 79°F and a low near 63°F. The maximum rain chance is 79%.