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Blue Lake, IA Weather Forecast
Blue Lake, IA Weather Forecast Date: 1203 PM CDT Tue Aug 18 2026
The area/counties/county of: Monona, including the cities of: Onawa and Mapleton.or toggle through each period.
This Afternoon... Partly sunny. Highs in the lower 80s. Southwest winds around 5 mph.
Tonight... Mostly cloudy. Humid with lows in the lower 60s. North winds around 5 mph, becoming east after midnight.
Wednesday... Patchy fog in the morning. Partly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Humid with highs in the upper 70s. Southeast winds around 5 mph. Chance of rain 50%.
Wednesday Night... Mostly clear with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Humid with lows around 60. Southeast winds around 5 mph. Chance of rain 20%.
Thursday... Sunny with highs in the lower 80s. South winds 5 to 10 mph.
Thursday Night... Mostly clear. A chance of showers and thunderstorms in the evening. Lows in the lower 60s. Chance of rain 40%.
Friday... Sunny. Highs in the lower 80s.
Friday Night... Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms. Lows in the lower 60s. Chance of rain 20%.
Saturday... Sunny. Highs in the upper 70s.
Saturday Night... Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows around 60. Chance of rain 20%.
Sunday... Mostly cloudy with a slight chance of showers and thunderstorms in the morning, then partly sunny in the afternoon. Highs in the upper 70s. Chance of rain 20%.
Sunday Night... Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the lower 60s. Chance of rain 20%.
POP = Probability of Precipitation
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