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Monroe Lake, TX Weather Forecast
Monroe Lake, TX Weather Forecast Date: 609 AM CDT Thu Sep 03 2026
The area/counties/county of: Collin, including the cities of: Plano, Mckinney, Allen, and Frisco.or toggle through each period.
Today... Mostly cloudy this morning, then becoming mostly sunny. A chance of showers. A slight chance of thunderstorms this morning, then a chance of thunderstorms this afternoon. Highs in the lower 90s. Southeast winds 5 to 10 mph. Chance of rain 50%.
Tonight... A slight chance of thunderstorms in the evening. Partly cloudy with a slight chance of showers. Lows in the lower 70s. Southeast winds 5 to 10 mph. Chance of rain 20%.
Friday... Sunny with highs in the mid 90s. South winds 5 to 10 mph. Heat index values up to 105.
Friday Night... Clear. Lows in the mid 70s. South winds 5 to 10 mph.
Saturday... Sunny. Highs in the upper 90s. South winds 5 to 10 mph. Heat index values up to 106.
Saturday Night... Mostly clear. Lows in the mid 70s.
Sunday... Sunny, hot with highs in the upper 90s. Heat index values up to 105.
Sunday Night... Mostly clear. Lows in the upper 70s.
Labor Day... Sunny, hot with highs in the upper 90s. Heat index values up to 110 in the afternoon.
Monday Night... Mostly clear. Lows in the upper 70s.
Tuesday... Sunny, hot with highs in the upper 90s. Heat index values up to 110 in the afternoon.
Tuesday Night... Mostly clear. Lows in the mid 70s.
POP = Probability of Precipitation
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