10-Day Weather Forecast - Castalia, OH

Partly cloudy. Warmer with highs around 90. Southeast winds around 5 mph. Heat index values up to 100 this afternoon.

Partly cloudy. Humid with lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 100 early in the evening.

Mostly sunny. Hot with highs in the mid 90s. Southwest winds 10 to 15 mph. Heat index values up to 109.

Mostly clear. Humid with lows in the mid 70s. Southwest winds 5 to 10 mph. Heat index values up to 108 early in the evening.

Sunny hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 108.

Clear. Lows in the mid 70s. Heat index values up to 105 early in the evening.

Sunny hot with highs in the upper 90s. Heat index values up to 105.

Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening.

Mostly sunny in the morning then partly cloudy with a chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 30 percent. Heat index values up to 100.

Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 50 percent. Heat index values in the upper 90s early in the evening.

Partly sunny with a chance of showers and thunderstorms. Hot with highs around 90. Chance of rain 50 percent.

Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 50 percent.

Partly cloudy with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 40 percent.

Partly cloudy with a 60% chance for rain and thunderstorms. Low temperature around 73F. Dew point will be around 68F with an average humidity of 74%. Winds will be 4 mph from the SW.

Mostly sunny with a 50% chance for rain and thunderstorms. High temperature around 85F. Dew point will be around 68F with an average humidity of 66%. Winds will be 4 mph from the W.

Clear with a 50% chance for rain and thunderstorms. Low temperature around 69F. Dew point will be around 64F with an average humidity of 71%. Winds will be 2 mph from the W.

Sunny with a chance of rain. Chance of precipitation 40%. High temperature around 82F. Dew point will be around 64F with an average humidity of 63%. Winds will be 2 mph from the W.

Mostly clear with a chance of rain. Chance of precipitation 35%. Low temperature around 68F. Dew point will be around 62F with an average humidity of 71%. Winds will be 1 mph from the W.