21st Century Cooperative

	County Forecast for Cumberland , IA

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230600-
Cass-
Including the city of Atlantic
548 PM CDT Sat Aug 22 2026

Tonight   Mostly clear this evening, then becoming partly cloudy. Lows in the upper 50s. Northeast winds 5 to 10 mph, becoming east after midnight.
Sunday   Mostly sunny. Highs in the upper 70s. Southeast winds around 5 mph, becoming southwest around 5 mph in the afternoon.
Sunday night   Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the lower 60s. South winds around 5 mph. Chance of rain 40 percent.
Monday   Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning. Highs in the upper 70s. Southeast winds 5 to 10 mph. Chance of rain 50 percent.
Monday night   Mostly cloudy. Humid with lows in the mid 60s. Southeast winds around 5 mph.
Tuesday   Mostly sunny. Highs in the lower 80s.
Tuesday night   Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the mid 60s. Chance of rain 30 percent.
Wednesday   Sunny with a slight chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 20 percent.
Wednesday night   Mostly clear. Lows in the lower 60s.
Thursday   Sunny. Highs in the lower 80s.
Thursday night   Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s.
Friday   Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the lower 80s. Chance of rain 20 percent.
Friday night   Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the mid 60s. Chance of rain 40 percent.
Saturday   Partly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the lower 80s. Chance of rain 40 percent.

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Bryce Anderson – DTN Meteorologist

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System Moving Through Midwest This Weekend, Another Next Week

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Posted at 12:17PM Fri Aug 21, 2026 CDT

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