As of 10:09 CDT

Weather in Charleston, IL

61°

Charleston, Tuesday, 20 October, 10:09

Clear. Feels like 59°. High 71°, low 44°.

Pressure30.39 inHg

Wind0 mph N

Humidity55%

Visibility6.2 mi

Dew point45°

See detailed hourly forecast

Wed, 2172° / 43°

72 °

Charleston, Wednesday, 21 October

Clear. High 72°, low 43°.

Pressure30.27 inHg

Wind1.5 mph NW

Humidity44%

Visibility6.2 mi

Dew point45°

Thu, 2271° / 46°

71 °

Charleston, Thursday, 22 October

Clear. High 71°, low 46°.

Pressure30.30 inHg

Wind4 mph NE

Humidity48%

Visibility6.2 mi

Dew point48°

Fri, 2368° / 47°

68 °

Charleston, Friday, 23 October

Clear. High 68°, low 47°.

Pressure30.33 inHg

Wind5.7 mph SE

Humidity51%

Visibility6.2 mi

Dew point48°

Sat, 2470° / 48°

70 °

Charleston, Saturday, 24 October

Clear. High 70°, low 48°.

Pressure30.36 inHg

Wind6.6 mph SE

Humidity47%

Visibility—

Dew point45°

Sun, 2576° / 52°

76 °

Charleston, Sunday, 25 October

Overcast. High 76°, low 52°.

Pressure30.39 inHg

Wind5.3 mph S

Humidity40%

Visibility—

Dew point46°

Mon, 2673° / 54°

73 °

Charleston, Monday, 26 October

Overcast. High 73°, low 54°.

Pressure30.15 inHg

Wind15.6 mph SW

Humidity28%

Visibility—

Dew point36°

Tue, 2752° / 39°

0.04

52 °

Charleston, Tuesday, 27 October

Light rain. High 52°, low 39°.

Pressure30.39 inHg

Wind18.8 mph N

Humidity33%

Visibility—

Dew point20°

Wed, 2852° / 32°

52 °

Charleston, Wednesday, 28 October

Clear. High 52°, low 32°.

Pressure30.42 inHg

Wind7.7 mph SW

Humidity33%

Visibility—

Dew point20°

Thu, 2960° / 35°

60 °

Charleston, Thursday, 29 October

Partly cloudy. High 60°, low 35°.

Pressure30.12 inHg

Wind15.3 mph W

Humidity30%

Visibility—

Dew point24°

Fri, 3049° / 34°

49 °

Charleston, Friday, 30 October

Clear. High 49°, low 34°.

Pressure30.36 inHg

Wind14.7 mph N

Humidity30%

Visibility—

Dew point17°

Sat, 3152° / 30°

52 °

Charleston, Saturday, 31 October

Overcast. High 52°, low 30°.

Pressure30.30 inHg

Wind9.1 mph SW

Humidity28%

Visibility—

Dew point16°

Sun, 0158° / 37°

58 °

Charleston, Sunday, 1 November

Mostly clear. High 58°, low 37°.

Pressure30.15 inHg

Wind11.9 mph SW

Humidity41%

Visibility—

Dew point31°

Mon, 0262° / 42°

62 °

Charleston, Monday, 2 November

Clear. High 62°, low 42°.

Pressure30.30 inHg

Wind7.5 mph SE

Humidity46%

Visibility—

Dew point37°

Tue, 0365° / 43°

65 °

Charleston, Tuesday, 3 November

Overcast. High 65°, low 43°.

Pressure30.21 inHg

Wind14.6 mph S

Humidity35%

Visibility—

Dew point33°

Wed, 0461° / 51°

0.35

61 °

Charleston, Wednesday, 4 November

Rain. High 61°, low 51°.

Pressure30.00 inHg

Wind17.6 mph S

Humidity71%

Visibility—

Dew point47°

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 Charleston, IL 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 Charleston, IL 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.