County Forecast for Fostoria , OH
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231300-
Seneca-
Including the cities of Tiffin and Fostoria
803 PM EDT Sat Aug 22 2026

Tonight   Partly cloudy with showers and thunderstorms likely this evening, then mostly clear after midnight. Lows in the upper 50s. West winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 70 percent.
Sunday   Mostly sunny in the morning, then partly cloudy with a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 70s. West winds 10 to 15 mph. Chance of rain 30 percent.
Sunday night   Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Lows in the lower 50s. West winds 5 to 10 mph. Chance of rain 30 percent.
Monday   Mostly sunny. Highs in the mid 70s. West winds 10 to 15 mph.
Monday night   Mostly clear. Lows in the mid 50s. West winds 5 to 10 mph.
Tuesday   Mostly sunny. Highs in the upper 70s.
Tuesday night   Partly cloudy. Lows in the upper 50s.
Wednesday   Partly cloudy. Highs in the lower 80s.
Wednesday night   Mostly cloudy with a chance of showers. Lows in the lower 60s. Chance of rain 30 percent.
Thursday   Partly cloudy with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 40 percent.
Thursday night   Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the lower 60s. Chance of rain 40 percent.
Friday   Mostly sunny. Highs in the lower 80s.
Friday night   Mostly clear. Lows in the lower 60s.
Saturday   Mostly sunny. Highs in the lower 80s.
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Bryce Anderson – DTN Meteorologist
System Moving Through Midwest This Weekend, Another Next Week
Posted at 12:17PM Fri Aug 21, 2026 CDT
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