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Grinnell, IA Weather Forecast

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Grinnell, IA Weather Forecast

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Grinnell IA weather - Light Rain - 59°F
Light Rain
59°F
Updated 6:49 am
Feels Like 56°F
Humidity 99%
Wind E 8 mph
Barometer  30.08 in
Dew Point 59°F
Grinnell IA weather - Light Rain - 15°C
Light Rain
15°C
Updated 6:49 am
Feels Like 13°C
Humidity 99%
Wind E 13 km/h
Barometer  101.8 kPa
Dew Point 15°C
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Grinnell Weather Forecast

TODAY TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT COLUMBUS DAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT
Grinnell, IA Weather - Today Chance Of T-Storm Grinnell, IA Weather - Tonight Clear Grinnell, IA Weather - Saturday Sunny Grinnell, IA Weather - Saturday Night Mostly Clear Grinnell, IA Weather - Sunday Sunny Grinnell, IA Weather - Sunday Night Partly Cloudy Grinnell, IA Weather - Columbus Day Mostly Sunny Grinnell, IA Weather - Monday Night Mostly Clear Grinnell, IA Weather - Tuesday Sunny Grinnell, IA Weather - Tuesday Night Chance Of Showers Grinnell, IA Weather - Wednesday Chance Of T-Storm Grinnell, IA Weather - Wednesday Night Chance Of T-Storm
Chance of T-Storm Clear Sunny Mostly Clear Sunny Partly Cloudy Mostly Sunny Mostly Clear Sunny Chance of Showers Chance of T-Storm Chance of T-Storm
Hi: 81°FHi: 27°C
 Lo: 61°FLo: 16°C Hi: 85°FHi: 29°C
 Lo: 59°FLo: 15°C Hi: 80°FHi: 27°C
 Lo: 61°FLo: 16°C Hi: 81°FHi: 27°C
 Lo: 60°FLo: 16°C Hi: 71°FHi: 22°C
 Lo: 51°FLo: 11°C Hi: 69°FHi: 21°C
 Lo: 55°FLo: 13°C
POP: 40% POP: 40% POP: 70% POP: 70%
POP = Probability of Precipitation.
Weather Outlook Updated: 632 AM CDT Fri Oct 09 2026 Grinnell, IA Weather - WeatherWorld.com

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Issued: 627 AM CDT Fri Oct 9 2026

Key Messages

  • Warmer today and Saturday. Breezy and dry on Saturday, with elevated fire weather concerns in northwestern Iowa.
  • Slight chances for rain on Monday in northern Iowa before fall-like temperatures return. Perhaps a return to more active weather towards the middle of next week.

.SHORT TERM /THROUGH SATURDAY/... Issued at 319 AM CDT Fri Oct 9 2026

The latest surface analysis shows a surface wave moving out of the western High Plains with a warm front skirting the local area. This warm front...