Weather in Grinnell, IA
Updated 2026-08-11 11:15 local time · ZIP codes 50112
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
77°25% rain
85°23% rain87°8% rain87°6% rain88°5% rain90°4% rain90°4% rain90°5% rain87°6% rain84°7% rain
82°9% rain80°10% 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 25%).
It feels like 81°F with winds near 4 mph.
84°F, 7% rain chance and 8 mph wind.
Visibility is around 10 mi; gusts may reach 17 mph.
Current temperature is 77°F, wind 4 mph, rain chance up to 25%.
UV index is 4. Sunscreen and sunglasses are sensible for longer outdoor time.
Grinnell weather today
Sunny and 77°F in Grinnell, IA. Today's high is 90°F with a 19% rain chance. Winds are around 4 mph with gusts near 5 mph. Relative humidity is 94%, pressure is 29.88 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Grinnell
Sunrise is at 06:15 AM and sunset is at 08:16 PM. Tomorrow's forecast calls for Sunny with a high near 83°F and a low near 69°F. The maximum rain chance is 75%.