As of 21:24 EDT

Weather in Castalia, OH

49°

Castalia, Wednesday, 21 October, 21:24

Clear. Feels like 49°. High 67°, low 40°.

Pressure30.18 inHg

Wind0 mph N

Humidity95%

Visibility6.2 mi

Dew point47°

See detailed hourly forecast

Thu, 2266° / 44°

66 °

Castalia, Thursday, 22 October

Clear. High 66°, low 44°.

Pressure30.24 inHg

Wind4.9 mph N

Humidity74%

Visibility6.2 mi

Dew point52°

Fri, 2363° / 46°

63 °

Castalia, Friday, 23 October

Overcast. High 63°, low 46°.

Pressure30.39 inHg

Wind6.3 mph N

Humidity96%

Visibility1.8 mi

Dew point55°

Sat, 2461° / 45°

61 °

Castalia, Saturday, 24 October

Clear. High 61°, low 45°.

Pressure30.45 inHg

Wind0.5 mph E

Humidity65%

Visibility6.2 mi

Dew point47°

Sun, 2564° / 44°

64 °

Castalia, Sunday, 25 October

Clear. High 64°, low 44°.

Pressure30.47 inHg

Wind1.4 mph SW

Humidity65%

Visibility6.2 mi

Dew point47°

Mon, 2665° / 47°

65 °

Castalia, Monday, 26 October

Overcast. High 65°, low 47°.

Pressure30.36 inHg

Wind6.9 mph NE

Humidity59%

Visibility—

Dew point48°

Tue, 2762° / 48°

62 °

Castalia, Tuesday, 27 October

Overcast. High 62°, low 48°.

Pressure30.27 inHg

Wind7.8 mph E

Humidity64%

Visibility—

Dew point47°

Wed, 2859° / 50°

0.06

59 °

Castalia, Wednesday, 28 October

Light rain. High 59°, low 50°.

Pressure30.06 inHg

Wind13.4 mph N

Humidity72%

Visibility—

Dew point49°

Thu, 2951° / 43°

51 °

Castalia, Thursday, 29 October

Clear. High 51°, low 43°.

Pressure30.27 inHg

Wind10.9 mph N

Humidity51%

Visibility—

Dew point32°

Fri, 3059° / 39°

59 °

Castalia, Friday, 30 October

Overcast. High 59°, low 39°.

Pressure30.27 inHg

Wind8.8 mph S

Humidity28%

Visibility—

Dew point22°

Sat, 3165° / 47°

65 °

Castalia, Saturday, 31 October

Overcast. High 65°, low 47°.

Pressure30.21 inHg

Wind13.7 mph S

Humidity54%

Visibility—

Dew point46°

Sun, 0166° / 56°

0.09

66 °

Castalia, Sunday, 1 November

Light rain. High 66°, low 56°.

Pressure30.09 inHg

Wind22.5 mph SW

Humidity51%

Visibility—

Dew point46°

Mon, 0258° / 45°

0.33

58 °

Castalia, Monday, 2 November

Rain. High 58°, low 45°.

Pressure29.91 inHg

Wind20.9 mph W

Humidity80%

Visibility—

Dew point47°

Tue, 0348° / 39°

0.02

48 °

Castalia, Tuesday, 3 November

Snow. High 48°, low 39°.

Pressure30.15 inHg

Wind18.3 mph W

Humidity39%

Visibility—

Dew point22°

Wed, 0455° / 37°

55 °

Castalia, Wednesday, 4 November

Partly cloudy. High 55°, low 37°.

Pressure29.97 inHg

Wind24.8 mph SW

Humidity41%

Visibility—

Dew point28°

Thu, 0555° / 46°

0.08

55 °

Castalia, Thursday, 5 November

Light rain. High 55°, low 46°.

Pressure29.50 inHg

Wind27.4 mph SW

Humidity84%

Visibility—

Dew point48°

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.