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As of 19:59 CDT

Weather in Charleston, IL

82°Current weather

Charleston, Saturday, 8 August, 19:59

Clear. Feels like 88°. High 88°, low 71°.

Pressure30.00 inHg
Wind4.7 mph SW
Humidity82%
Visibility6.2 mi
Dew point76°
Sun, 0992° / 72°0Overcast
92 °Overcast

Charleston, Sunday, 9 August

Overcast. High 92°, low 72°.

Pressure30.00 inHg
Wind13.5 mph S
Humidity66%
Visibility6.2 mi
Dew point71°
Mon, 1090° / 76°0.05Light rain
90 °Light rain

Charleston, Monday, 10 August

Light rain. High 90°, low 76°.

Pressure29.97 inHg
Wind13.3 mph SW
Humidity66%
Visibility6.2 mi
Dew point73°
Tue, 1191° / 73°0.04Light rain
91 °Light rain

Charleston, Tuesday, 11 August

Light rain. High 91°, low 73°.

Pressure29.85 inHg
Wind15.3 mph SW
Humidity72%
Visibility6.2 mi
Dew point73°
Wed, 1286° / 70°1.15Heavy rain
86 °Heavy rain

Charleston, Wednesday, 12 August

Heavy rain. High 86°, low 70°.

Pressure29.85 inHg
Wind5.2 mph NW
Humidity73%
Visibility6.2 mi
Dew point76°
Thu, 1382° / 67°2.53Heavy rain
82 °Heavy rain

Charleston, Thursday, 13 August

Heavy rain. High 82°, low 67°.

Pressure29.94 inHg
Wind14.8 mph E
Humidity69%
Visibility—
Dew point69°
Fri, 1476° / 66°0.12Light rain
76 °Light rain

Charleston, Friday, 14 August

Light rain. High 76°, low 66°.

Pressure30.09 inHg
Wind11.8 mph E
Humidity79%
Visibility—
Dew point66°
Sat, 1568° / 62°0.02Light rain
68 °Light rain

Charleston, Saturday, 15 August

Light rain. High 68°, low 62°.

Pressure30.27 inHg
Wind13.3 mph E
Humidity79%
Visibility—
Dew point60°
Sun, 1672° / 61°0.11Light rain
72 °Light rain

Charleston, Sunday, 16 August

Light rain. High 72°, low 61°.

Pressure30.09 inHg
Wind7.8 mph SE
Humidity86%
Visibility—
Dew point65°
Mon, 1777° / 65°0.06Light rain
77 °Light rain

Charleston, Monday, 17 August

Light rain. High 77°, low 65°.

Pressure30.06 inHg
Wind6.3 mph N
Humidity84%
Visibility—
Dew point69°
Tue, 1882° / 66°0Overcast
82 °Overcast

Charleston, Tuesday, 18 August

Overcast. High 82°, low 66°.

Pressure30.03 inHg
Wind5.5 mph E
Humidity73%
Visibility—
Dew point69°
Wed, 1982° / 64°0Overcast
82 °Overcast

Charleston, Wednesday, 19 August

Overcast. High 82°, low 64°.

Pressure29.91 inHg
Wind12 mph N
Humidity74%
Visibility—
Dew point72°
Thu, 2073° / 55°0.01Light rain
73 °Light rain

Charleston, Thursday, 20 August

Light rain. High 73°, low 55°.

Pressure30.03 inHg
Wind14 mph N
Humidity65%
Visibility—
Dew point57°
Fri, 2173° / 54°0Overcast
73 °Overcast

Charleston, Friday, 21 August

Overcast. High 73°, low 54°.

Pressure30.06 inHg
Wind8.8 mph E
Humidity58%
Visibility—
Dew point53°
Sat, 2280° / 60°0.03Light rain
80 °Light rain

Charleston, Saturday, 22 August

Light rain. High 80°, low 60°.

Pressure29.85 inHg
Wind14.1 mph S
Humidity71%
Visibility—
Dew point65°
Sun, 2373° / 55°0Partly cloudy
73 °Partly cloudy

Charleston, Sunday, 23 August

Partly cloudy. High 73°, low 55°.

Pressure30.15 inHg
Wind13.9 mph E
Humidity45%
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.