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As of 05:56 EDT

Weather in Castalia, OH

57°Current weather

Castalia, Thursday, 15 October, 05:56

Overcast. Feels like 56°. High 66°, low 56°.

Pressure30.18 inHg
Wind5.7 mph NE
Humidity77%
Visibility6.2 mi
Dew point50°
Fri, 1670° / 52°0.43Rain
70 °Rain

Castalia, Friday, 16 October

Rain. High 70°, low 52°.

Pressure29.83 inHg
Wind17.5 mph W
Humidity74%
Visibility6.2 mi
Dew point51°
Sat, 1750° / 44°0Clear
50 °Clear

Castalia, Saturday, 17 October

Clear. High 50°, low 44°.

Pressure30.47 inHg
Wind12.1 mph N
Humidity60%
Visibility6.2 mi
Dew point35°
Sun, 1861° / 41°0Clear
61 °Clear

Castalia, Sunday, 18 October

Clear. High 61°, low 41°.

Pressure30.56 inHg
Wind10.9 mph SW
Humidity47%
Visibility6.2 mi
Dew point36°
Mon, 1960° / 41°0Clear
60 °Clear

Castalia, Monday, 19 October

Clear. High 60°, low 41°.

Pressure30.45 inHg
Wind6.4 mph NE
Humidity46%
Visibility—
Dew point37°
Tue, 2060° / 44°0Clear
60 °Clear

Castalia, Tuesday, 20 October

Clear. High 60°, low 44°.

Pressure30.33 inHg
Wind5.7 mph NE
Humidity54%
Visibility—
Dew point41°
Wed, 2163° / 53°0Clear
63 °Clear

Castalia, Wednesday, 21 October

Clear. High 63°, low 53°.

Pressure30.36 inHg
Wind11.9 mph NE
Humidity59%
Visibility—
Dew point47°
Thu, 2262° / 47°0Clear
62 °Clear

Castalia, Thursday, 22 October

Clear. High 62°, low 47°.

Pressure30.33 inHg
Wind7.9 mph NE
Humidity43%
Visibility—
Dew point37°
Fri, 2365° / 47°0Clear
65 °Clear

Castalia, Friday, 23 October

Clear. High 65°, low 47°.

Pressure30.30 inHg
Wind8.4 mph SE
Humidity33%
Visibility—
Dew point33°
Sat, 2468° / 49°0Overcast
68 °Overcast

Castalia, Saturday, 24 October

Overcast. High 68°, low 49°.

Pressure30.27 inHg
Wind8.4 mph S
Humidity43%
Visibility—
Dew point42°
Sun, 2569° / 56°0.14Light rain
69 °Light rain

Castalia, Sunday, 25 October

Light rain. High 69°, low 56°.

Pressure30.09 inHg
Wind17.2 mph SW
Humidity43%
Visibility—
Dew point44°
Mon, 2652° / 44°0.15Rain
52 °Rain

Castalia, Monday, 26 October

Rain. High 52°, low 44°.

Pressure30.21 inHg
Wind19.7 mph W
Humidity45%
Visibility—
Dew point30°
Tue, 2751° / 39°0Overcast
51 °Overcast

Castalia, Tuesday, 27 October

Overcast. High 51°, low 39°.

Pressure30.18 inHg
Wind17.6 mph W
Humidity39%
Visibility—
Dew point25°
Wed, 2850° / 34°0Partly cloudy
50 °Partly cloudy

Castalia, Wednesday, 28 October

Partly cloudy. High 50°, low 34°.

Pressure30.15 inHg
Wind13.6 mph SW
Humidity35%
Visibility—
Dew point20°
Thu, 2952° / 45°0.06Light rain
52 °Light rain

Castalia, Thursday, 29 October

Light rain. High 52°, low 45°.

Pressure30.00 inHg
Wind15.1 mph SW
Humidity75%
Visibility—
Dew point41°
Fri, 3045° / 40°0Overcast
45 °Overcast

Castalia, Friday, 30 October

Overcast. High 45°, low 40°.

Pressure30.24 inHg
Wind22.1 mph NW
Humidity41%
Visibility—
Dew point22°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Castalia, OH are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Castalia, OH since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.