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Gem Lake, MO 7-Day Night Weather Forecast
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Gem Lake, MO Weather Forecast
Gem Lake, MO Weather Forecast Date: 249 PM CDT Wed Aug 12 2026
The area/counties/county of: Monroe County Il, Jefferson County Mo.or toggle through each period.
Tonight... Partly cloudy. Isolated showers and thunderstorms this evening, then scattered showers and thunderstorms after midnight. Lows in the upper 70s. South winds around 5 mph. Chance of rain 30%. Heat index values up to 106 early this evening.
Thursday... Mostly sunny with isolated showers and thunderstorms. Hot with highs in the upper 90s. Southwest winds around 5 mph. Chance of rain 20%. Heat index values up to 112 in the afternoon.
Thursday Night... Partly cloudy with isolated showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the upper 70s. South winds around 5 mph. Chance of rain 20%. Heat index values up to 109 early in the evening.
Friday... Mostly sunny. Hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 112.
Friday Night... Mostly clear. Lows in the mid 70s. South winds around 5 mph. Heat index values up to 111 early in the evening.
Saturday... Mostly clear. Hot. Highs in the upper 90s. Lows in the mid 70s. Heat index values up to 110.
Sunday... Mostly clear. Hot. Highs in the upper 90s. Lows in the mid 70s. Heat index values up to 110.
Sunday Night... Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the lower 70s. Chance of rain 20%. Heat index values up to 110 early in the evening.
Monday... Partly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs around 90. Chance of rain 20%. Heat index values up to 100.
Monday Night... Partly cloudy. A 20% chance of showers. Lows in the upper 60s. Highs in the upper 80s.
Tuesday... Partly cloudy. A 20% chance of showers. Lows in the upper 60s. Highs in the upper 80s.
Tuesday Night... Partly cloudy. Lows around 70. Highs in the lower 90s. Heat index values up to 100.
POP = Probability of Precipitation
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