Weather in Alton, IA
Updated 2026-09-26 11:00 local time · ZIP codes 51003
Patchy rain nearby
No government weather alerts were returned for this location at the latest update.
Next hours
59°30% rain62°26% rain64°30% rain
65°23% rain67°20% rain67°19% rain66°27% rain
63°60% rain61°43% rain
60°76% rain60°50% rain
60°38% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance reaches about 76% over the next 12 hours.
It feels like 52°F with winds near 15 mph.
67°F, 20% rain chance and 13 mph wind.
Visibility is around 6 mi; gusts may reach 27 mph.
Current temperature is 59°F, wind 15 mph, rain chance up to 76%.
UV index is 1.
Local weather characteristics in Alton
Iowa has a continental climate with hot summers, cold winters, strong winds and a notable spring and summer severe-thunderstorm season.
Alton is part of the Midwest weather region. The forecast point is near 42.99°N latitude and 96.01°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.
Alton weather today
Patchy rain nearby and 59°F in Alton, IA. Today's high is 67°F with a 92% rain chance. Winds are around 15 mph with gusts near 27 mph. Relative humidity is 93%, pressure is 29.98 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Alton
Sunrise is at 07:15 AM and sunset is at 07:14 PM. Tomorrow's forecast calls for Mist with a high near 66°F and a low near 59°F. The maximum rain chance is 56%.