Weather in Alton, IA
Updated 2026-08-11 10:30 local time · ZIP codes 51003
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
78°9% rain86°7% rain88°4% rain89°4% rain90°4% rain91°3% rain91°3% rain91°3% rain89°3% rain86°3% rain83°5% rain
80°7% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 9%).
It feels like 82°F with winds near 7 mph.
86°F, 7% rain chance and 9 mph wind.
Visibility is around 6 mi; gusts may reach 41 mph.
Current temperature is 78°F, wind 7 mph, rain chance up to 9%.
UV index is 3.
Alton weather today
Sunny and 78°F in Alton, IA. Today's high is 91°F with a 8% rain chance. Winds are around 7 mph with gusts near 8 mph. Relative humidity is 80%, pressure is 29.81 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Alton
Sunrise is at 06:25 AM and sunset is at 08:32 PM. Tomorrow's forecast calls for Sunny with a high near 91°F and a low near 67°F. The maximum rain chance is 57%.