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Castalia, OH Weather Forecast for 5-Days

Updated: Wed Feb 11th 2026 4:30 PM EST

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Castalia, OH Weather – 2-11 – Overcast
35° / 30°
Overcast
Skies will be overcast in Castalia, with a high of 35°F and a low of 30°F. Snow is likely with a 4% chance. Wind will be moderate, blowing around 18mph on average and gusts of 23.4mph at 8 PM. The humidity will be on the higher side, averaging about 63%, the maximum being 71% at 11 PM and 54% being its lowest at 5 PM. Barometric pressure is its highest of 30.23inHg at 11 PM, a lowest point of 30.13inHg at 5 PM with an avg 30.18inHg.
Castalia, OH Weather – 2-12 – Light Freezing Rain
28° / 20°

Weather Tomorrow

Light Freezing Rain
Daytime highs will reach 28°F with lows dropping to 20°F in Castalia, where it will rain at times. Rainfall predicted to have a 65% chance with an estimated 0in. Snow is likely with a 10% chance. Wind will be moderate, blowing around 13mph on average and gusts of 21mph at 12 AM. The humidity will be on the higher side, averaging about 77%, the maximum being 93% at 11 PM and 63% being its lowest at 6 AM. Barometric pressure is its highest of 30.33inHg at 8 PM, a lowest point of 30.24inHg at 12 AM with an avg 30.3inHg.
Castalia, OH Weather – 2-13 – Partly Cloudy
37° / 21°
Partly Cloudy
Castalia could see overcast conditions with daytime highs of 37°F and nighttime lows near 21°F. Winds will be light at 9mph and gusts of 18.8mph at 11 PM. High humidity with average of 88% is anticipated, the maximum being 97% at 10 PM and 81% being its lowest at 1 AM. Barometric pressure is its highest of 30.35inHg at 9 AM, a lowest point of 30.22inHg at 5 PM with an avg 30.3inHg.
Castalia, OH Weather – 2-14 – Overcast
38° / 29°
Overcast
In Castalia, skies will be overcast with highs near 38°F and lows around 29°F. Winds will be light at 10mph and gusts of 20.7mph at 12 AM. High humidity with average of 96% is anticipated, the maximum being 99% at 8 PM and 87% being its lowest at 10 PM. Barometric pressure is its highest of 30.22inHg at 2 AM, a lowest point of 30.06inHg at 10 PM with an avg 30.16inHg.
Castalia, OH Weather – 2-15 – Sunny
41° / 31°
Sunny
Bright and sunny conditions in Castalia, with a high of 41°F and a low of 31°F. Snow is likely with a 3% chance. Winds will be light at 10mph and gusts of 19.7mph at 9 PM. High humidity with average of 89% is anticipated, the maximum being 98% at 9 PM and 81% being its lowest at 1 PM. Barometric pressure is its highest of 30.17inHg at 12 AM, a lowest point of 29.88inHg at 3 PM with an avg 29.97inHg.
Castalia, OH Weather – 2-16 – Mist
33° / 27°
Mist
Mist is in the forecast for Castalia, with a high of 33°F and a low of 27°F. Winds will be light at 10mph and gusts of 15mph at 12 AM. High humidity with average of 88% is anticipated, the maximum being 96% at 7 AM and 79% being its lowest at 4 PM. Barometric pressure is its highest of 30.27inHg at 7 PM, a lowest point of 30.05inHg at 12 AM with an avg 30.2inHg.

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