10-day forecast for Castalia, OH: 58° to 88°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.
87°
Best day: Sunday, August 9
88° · 2.06 in
Worst day: Monday, August 10
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1088° / 67°2.06
Morning70°feels 71°
Afternoon87°feels 98°
Evening82°feels 90°
Overnight74°feels 76°
88 °
Castalia, Monday, 10 August
Heavy rain. High 88°, low 67°.
Pressure29.94 inHg
Wind17.2 mph W
Humidity78%
Visibility6.2 mi
Dew point72°
Tue, 1183° / 65°1.42
Morning69°feels 70°
Afternoon83°feels 88°
Evening66°feels 66°
Overnight66°feels 67°
83 °
Castalia, Tuesday, 11 August
Heavy rain. High 83°, low 65°.
Pressure29.91 inHg
Wind8.4 mph SE
Humidity71%
Visibility6.2 mi
Dew point70°
Wed, 1281° / 66°0.03
Morning68°feels 69°
Afternoon78°feels 79°
Evening75°feels 76°
Overnight66°feels 67°
81 °
Castalia, Wednesday, 12 August
Light rain. High 81°, low 66°.
Pressure29.80 inHg
Wind4.7 mph N
Humidity81%
Visibility6.2 mi
Dew point68°
Thu, 1372° / 66°0
Morning67°feels 67°
Afternoon70°feels 70°
Evening68°feels 68°
Overnight68°feels 69°
72 °
Castalia, Thursday, 13 August
Light rain. High 72°, low 66°.
Pressure29.97 inHg
Wind10.7 mph NW
Humidity56%
Visibility—
Dew point54°
Fri, 1471° / 61°0
Morning64°feels 63°
Afternoon69°feels 69°
Evening67°feels 67°
Overnight63°feels 62°
71 °
Castalia, Friday, 14 August
Overcast. High 71°, low 61°.
Pressure30.15 inHg
Wind10.5 mph E
Humidity56%
Visibility—
Dew point52°
Sat, 1569° / 59°0
Morning65°feels 64°
Afternoon68°feels 68°
Evening63°feels 63°
Overnight60°feels 59°
69 °
Castalia, Saturday, 15 August
Overcast. High 69°, low 59°.
Pressure30.30 inHg
Wind8.1 mph E
Humidity57%
Visibility—
Dew point53°
Sun, 1671° / 58°0.03
Morning62°feels 61°
Afternoon68°feels 68°
Evening67°feels 67°
Overnight62°feels 62°
71 °
Castalia, Sunday, 16 August
Light rain. High 71°, low 58°.
Pressure30.15 inHg
Wind8.6 mph SE
Humidity61%
Visibility—
Dew point53°
Mon, 1777° / 61°0.01
Morning66°feels 66°
Afternoon74°feels 74°
Evening71°feels 72°
Overnight67°feels 67°
77 °
Castalia, Monday, 17 August
Light rain. High 77°, low 61°.
Pressure30.06 inHg
Wind7.8 mph SW
Humidity71%
Visibility—
Dew point63°
Tue, 1877° / 64°0
Morning67°feels 68°
Afternoon76°feels 76°
Evening71°feels 72°
Overnight67°feels 67°
77 °
Castalia, Tuesday, 18 August
Light rain. High 77°, low 64°.
Pressure30.06 inHg
Wind9.2 mph E
Humidity67%
Visibility—
Dew point63°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Castalia, OH around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.