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Griffin, IN 7-Day Night Weather Forecast
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Griffin, IN Weather Forecast
Griffin, IN Weather Forecast Date: 507 PM CDT Fri Sep 11 2026
The area/counties/county of: Posey, including the city of Poseyville.or toggle through each period.
Tonight... A chance of thunderstorms. Showers likely this evening, then showers after midnight. Locally heavy rainfall possible this evening. Lows in the upper 60s. Southeast winds around 5 mph. Chance of rain 90%.
Saturday... Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the upper 80s. Southwest winds around 5 mph. Chance of rain 20%.
Saturday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 60s. South winds around 5 mph in the evening, becoming light and variable.
Sunday... Mostly sunny. Highs in the lower 90s. Calm winds, becoming west around 5 mph in the afternoon.
Sunday Night... Partly cloudy. Lows in the mid 60s. Northeast winds around 5 mph.
Monday... Mostly sunny. Highs in the upper 80s.
Monday Night... Mostly clear. Hot. Lows around 70. Highs in the mid 90s.
Tuesday... Mostly clear. Hot. Lows around 70. Highs in the mid 90s.
Wednesday... Mostly clear. Hot. Lows around 70. Highs in the mid 90s.
Thursday... Mostly sunny with a chance of showers. Highs in the lower 90s. Chance of rain 40%.
Thursday Night... Partly cloudy. Lows in the upper 60s. Highs in the upper 80s.
POP = Probability of Precipitation
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