As of 02:07 EDT

Weather in Castalia, OH

46°

Castalia, Monday, 19 October, 02:07

Clear. Feels like 42°. High 64°, low 41°.

Pressure30.42 inHg

Wind8.1 mph SW

Humidity63%

Visibility6.2 mi

Dew point35°

See detailed hourly forecast

Tue, 2065° / 46°

65 °

Castalia, Tuesday, 20 October

Mostly clear. High 65°, low 46°.

Pressure30.39 inHg

Wind6.7 mph NE

Humidity71%

Visibility6.2 mi

Dew point52°

Wed, 2159° / 45°

59 °

Castalia, Wednesday, 21 October

Clear. High 59°, low 45°.

Pressure30.33 inHg

Wind1.8 mph N

Humidity74%

Visibility6.2 mi

Dew point49°

Thu, 2261° / 48°

61 °

Castalia, Thursday, 22 October

Clear. High 61°, low 48°.

Pressure30.27 inHg

Wind5.8 mph N

Humidity82%

Visibility6.2 mi

Dew point54°

Fri, 2357° / 51°

57 °

Castalia, Friday, 23 October

Clear. High 57°, low 51°.

Pressure30.45 inHg

Wind9.9 mph NE

Humidity64%

Visibility—

Dew point44°

Sat, 2463° / 42°

63 °

Castalia, Saturday, 24 October

Mostly clear. High 63°, low 42°.

Pressure30.47 inHg

Wind11.3 mph S

Humidity53%

Visibility—

Dew point40°

Sun, 2566° / 52°

66 °

Castalia, Sunday, 25 October

Overcast. High 66°, low 52°.

Pressure30.18 inHg

Wind18.1 mph SW

Humidity44%

Visibility—

Dew point42°

Mon, 2659° / 46°

59 °

Castalia, Monday, 26 October

Overcast. High 59°, low 46°.

Pressure30.33 inHg

Wind9.6 mph S

Humidity38%

Visibility—

Dew point31°

Tue, 2765° / 55°

65 °

Castalia, Tuesday, 27 October

Overcast. High 65°, low 55°.

Pressure30.12 inHg

Wind13.6 mph SW

Humidity49%

Visibility—

Dew point44°

Wed, 2858° / 53°

0.1

58 °

Castalia, Wednesday, 28 October

Light rain. High 58°, low 53°.

Pressure30.21 inHg

Wind10.2 mph NE

Humidity80%

Visibility—

Dew point50°

Thu, 2960° / 54°

60 °

Castalia, Thursday, 29 October

Overcast. High 60°, low 54°.

Pressure30.15 inHg

Wind9.3 mph E

Humidity75%

Visibility—

Dew point49°

Fri, 3070° / 55°

0.23

70 °

Castalia, Friday, 30 October

Rain. High 70°, low 55°.

Pressure29.97 inHg

Wind21 mph S

Humidity59%

Visibility—

Dew point53°

Sat, 3164° / 55°

0.12

64 °

Castalia, Saturday, 31 October

Light rain. High 64°, low 55°.

Pressure30.00 inHg

Wind16.7 mph S

Humidity61%

Visibility—

Dew point47°

Sun, 0164° / 46°

0.43

64 °

Castalia, Sunday, 1 November

Rain. High 64°, low 46°.

Pressure29.44 inHg

Wind34.1 mph W

Humidity65%

Visibility—

Dew point51°

Mon, 0254° / 42°

54 °

Castalia, Monday, 2 November

Overcast. High 54°, low 42°.

Pressure29.94 inHg

Wind15.8 mph W

Humidity60%

Visibility—

Dew point39°

Tue, 0358° / 43°

58 °

Castalia, Tuesday, 3 November

Overcast. High 58°, low 43°.

Pressure30.12 inHg

Wind8.9 mph S

Humidity44%

Visibility—

Dew point34°

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.