As of 21:14 EDT

Weather in Castalia, OH

71°

Castalia, Monday, 12 October, 21:14

Clear. Feels like 71°. High 79°, low 59°.

Pressure29.85 inHg

Wind9.2 mph S

Humidity73%

Visibility6.2 mi

Dew point62°

See detailed hourly forecast

Tue, 1380° / 65°

0.17

80 °

Castalia, Tuesday, 13 October

Rain. High 80°, low 65°.

Pressure29.80 inHg

Wind17.4 mph SW

Humidity59%

Visibility6.2 mi

Dew point62°

Wed, 1467° / 62°

0.13

67 °

Castalia, Wednesday, 14 October

Rain. High 67°, low 62°.

Pressure30.03 inHg

Wind7.9 mph N

Humidity79%

Visibility6.2 mi

Dew point58°

Thu, 1561° / 58°

0.94

61 °

Castalia, Thursday, 15 October

Heavy rain. High 61°, low 58°.

Pressure30.18 inHg

Wind8.5 mph E

Humidity71%

Visibility6.2 mi

Dew point51°

Fri, 1664° / 51°

0.57

64 °

Castalia, Friday, 16 October

Rain. High 64°, low 51°.

Pressure29.83 inHg

Wind15.9 mph NW

Humidity79%

Visibility6.2 mi

Dew point51°

Sat, 1754° / 45°

54 °

Castalia, Saturday, 17 October

Clear. High 54°, low 45°.

Pressure30.45 inHg

Wind20.2 mph N

Humidity55%

Visibility—

Dew point34°

Sun, 1861° / 42°

61 °

Castalia, Sunday, 18 October

Clear. High 61°, low 42°.

Pressure30.39 inHg

Wind11.6 mph SW

Humidity30%

Visibility—

Dew point27°

Mon, 1968° / 46°

68 °

Castalia, Monday, 19 October

Clear. High 68°, low 46°.

Pressure30.36 inHg

Wind13.3 mph SW

Humidity36%

Visibility—

Dew point37°

Tue, 2066° / 53°

66 °

Castalia, Tuesday, 20 October

Overcast. High 66°, low 53°.

Pressure30.33 inHg

Wind8 mph S

Humidity49%

Visibility—

Dew point45°

Wed, 2167° / 52°

67 °

Castalia, Wednesday, 21 October

Clear. High 67°, low 52°.

Pressure30.24 inHg

Wind6.7 mph SE

Humidity53%

Visibility—

Dew point47°

Thu, 2271° / 55°

71 °

Castalia, Thursday, 22 October

Overcast. High 71°, low 55°.

Pressure30.21 inHg

Wind8.2 mph S

Humidity50%

Visibility—

Dew point48°

Fri, 2374° / 58°

74 °

Castalia, Friday, 23 October

Overcast. High 74°, low 58°.

Pressure30.06 inHg

Wind15.3 mph SW

Humidity37%

Visibility—

Dew point44°

Sat, 2474° / 56°

0.27

74 °

Castalia, Saturday, 24 October

Rain. High 74°, low 56°.

Pressure29.71 inHg

Wind23.5 mph SW

Humidity47%

Visibility—

Dew point51°

Sun, 2557° / 50°

57 °

Castalia, Sunday, 25 October

Overcast. High 57°, low 50°.

Pressure29.94 inHg

Wind15.1 mph W

Humidity66%

Visibility—

Dew point44°

Mon, 2658° / 51°

58 °

Castalia, Monday, 26 October

Mostly clear. High 58°, low 51°.

Pressure30.21 inHg

Wind6.5 mph NE

Humidity56%

Visibility—

Dew point42°

Tue, 2764° / 47°

64 °

Castalia, Tuesday, 27 October

Overcast. High 64°, low 47°.

Pressure30.00 inHg

Wind8.3 mph SE

Humidity52%

Visibility—

Dew point43°

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.