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Sinclair, IA Weather Forecast
Sinclair, IA Weather Forecast Date: 1032 PM CDT Tue Oct 20 2026
The area/counties/county of: Grundy, including the cities of: Grundy Center, Reinbeck, Conrad, Dike, and Wellsburg.or toggle through each period.
Rest of Tonight... Clear. Lows in the mid 40s. Southeast winds around 5 mph.
Wednesday... Sunny. Highs in the lower 70s. Southwest winds around 5 mph.
Wednesday Night... Partly cloudy. Lows in the upper 40s. South winds around 5 mph in the evening, becoming light and variable.
Thursday... Sunny. Highs in the mid 70s. Light and variable winds, becoming south around 5 mph in the afternoon.
Thursday Night... Mostly clear. Lows in the lower 50s. Southeast winds around 5 mph.
Friday... Mostly sunny. Highs in the lower 70s.
Friday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 50s.
Saturday... Partly sunny. Highs in the mid 70s.
Saturday Night... Mostly cloudy. Lows in the mid 50s.
Sunday... Mostly cloudy in the morning, then becoming partly sunny. A 20% chance of showers. Highs in the mid 60s.
Sunday Night... Mostly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 40s. Chance of rain 30%.
Monday... Mostly cloudy with a slight chance of showers in the morning, then partly sunny in the afternoon. Highs in the upper 50s. Chance of rain 20%.
Monday Night... Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 40s.
POP = Probability of Precipitation
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