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Flagg, IL Weather Forecast
Flagg, IL Weather Forecast Date: 605 AM CDT Mon Sep 07 2026
The area/counties/county of: Ogle, including the cities of: Rochelle, Oregon, and Byron.or toggle through each period.
Today... Partly cloudy. Patchy fog early in the morning. Highs around 80. Southeast winds 5 to 10 mph.
Tonight... Partly cloudy. Lows in the upper 50s. Southeast winds around 5 mph.
Tuesday... Mostly cloudy in the morning, then becoming partly cloudy. Highs in the mid 80s. South winds 5 to 10 mph.
Tuesday Night... Mostly cloudy. Showers with a chance of thunderstorms after midnight. Lows around 70. South winds 5 to 10 mph. Chance of precipitation 90%.
Wednesday... Mostly cloudy. Showers likely with a slight chance of thunderstorms in the morning. Humid with highs in the lower 80s. Southwest winds 5 to 10 mph. Chance of precipitation 70%.
Wednesday Night... Partly cloudy. Lows in the upper 50s.
Thursday... Mostly sunny. Highs in the upper 70s.
Thursday Night... Clear. Lows in the mid 50s.
Friday... Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 80s.
Friday Night... Partly cloudy. A chance of showers after midnight. Lows in the lower 60s. Chance of precipitation 40%.
Saturday... Partly cloudy. Highs in the mid 80s.
Saturday Night... Partly cloudy. Lows around 60.
POP = Probability of Precipitation
Flagg Radar Loop
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