Hot-summer humid continental climate
Climate Charleston - Illinois
Annual high64ºF
Annual low44ºF
Precipitation42.67 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 36 | 20 | 2.49 | 8 |
| Feb | 42 | 24 | 2.51 | 4 |
| Mar | 53 | 33 | 2.89 | 2 |
| Apr | 66 | 44 | 4.29 | 0 |
| May | 75 | 53 | 4.62 | 0 |
| Jun | 84 | 62 | 4.35 | 0 |
| Jul | 86 | 66 | 4.47 | 0 |
| Aug | 85 | 64 | 2.93 | 0 |
| Sep | 79 | 56 | 3.24 | 0 |
| Oct | 67 | 46 | 3.76 | 0 |
| Nov | 53 | 36 | 3.97 | 1 |
| Dec | 40 | 24 | 3.15 | 3 |
- JanHigh 36ºFLow 20ºFPrecip 2.49 inch
- FebHigh 42ºFLow 24ºFPrecip 2.51 inch
- MarHigh 53ºFLow 33ºFPrecip 2.89 inch
- AprHigh 66ºFLow 44ºFPrecip 4.29 inch
- MayHigh 75ºFLow 53ºFPrecip 4.62 inch
- JunHigh 84ºFLow 62ºFPrecip 4.35 inch
- JulHigh 86ºFLow 66ºFPrecip 4.47 inch
- AugHigh 85ºFLow 64ºFPrecip 2.93 inch
- SepHigh 79ºFLow 56ºFPrecip 3.24 inch
- OctHigh 67ºFLow 46ºFPrecip 3.76 inch
- NovHigh 53ºFLow 36ºFPrecip 3.97 inch
- DecHigh 40ºFLow 24ºFPrecip 3.15 inch
Climate summary
What is the average weather in Charleston, Illinois?
Charleston experiences a humid continental climate, marked by a very large seasonal temperature contrast. Summers are hot, while winters are cold and bring regular snowfall. Precipitation is fairly wet overall and spread relatively evenly through the year, though winter moisture often arrives as snow.
Charleston weather averages
Annual high64ºF
Annual low44ºF
Precipitation42.67 inch
Snowfall18 inch
Daily normals Charleston - Illinois - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 38.3 | 22.3 | 0.10 | 0.10 | 0.20 | 0.20 |
| Jan 2 | 38.1 | 22.1 | 0.19 | 0.19 | 0.50 | 0.50 |
| Jan 3 | 38.0 | 21.9 | 0.28 | 0.28 | 0.70 | 0.70 |
| Jan 4 | 37.9 | 21.8 | 0.37 | 0.37 | 0.90 | 0.90 |
| Jan 5 | 37.8 | 21.6 | 0.46 | 0.46 | 1.20 | 1.20 |
| Jan 6 | 37.7 | 21.4 | 0.55 | 0.55 | 1.40 | 1.40 |
| Jan 7 | 37.6 | 21.2 | 0.64 | 0.64 | 1.70 | 1.70 |
| Jan 8 | 37.5 | 21.1 | 0.72 | 0.72 | 1.90 | 1.90 |
| Jan 9 | 37.4 | 20.9 | 0.81 | 0.81 | 2.20 | 2.20 |
| Jan 10 | 37.4 | 20.8 | 0.90 | 0.90 | 2.40 | 2.40 |
| Jan 11 | 37.4 | 20.6 | 0.98 | 0.98 | 2.60 | 2.60 |
| Jan 12 | 37.3 | 20.5 | 1.06 | 1.06 | 2.90 | 2.90 |
| Jan 13 | 37.3 | 20.4 | 1.13 | 1.13 | 3.10 | 3.10 |
| Jan 14 | 37.3 | 20.3 | 1.20 | 1.20 | 3.40 | 3.40 |
| Jan 15 | 37.4 | 20.2 | 1.27 | 1.27 | 3.70 | 3.70 |
| Jan 16 | 37.4 | 20.2 | 1.35 | 1.35 | 4.00 | 4.00 |
| Jan 17 | 37.4 | 20.1 | 1.43 | 1.43 | 4.30 | 4.30 |
| Jan 18 | 37.5 | 20.1 | 1.50 | 1.50 | 4.50 | 4.50 |
| Jan 19 | 37.6 | 20.0 | 1.58 | 1.58 | 4.80 | 4.80 |
| Jan 20 | 37.7 | 20.0 | 1.66 | 1.66 | 5.10 | 5.10 |
| Jan 21 | 37.8 | 20.0 | 1.74 | 1.74 | 5.40 | 5.40 |
| Jan 22 | 37.9 | 20.1 | 1.82 | 1.82 | 5.70 | 5.70 |
| Jan 23 | 38.0 | 20.1 | 1.89 | 1.89 | 6.00 | 6.00 |
| Jan 24 | 38.1 | 20.1 | 1.97 | 1.97 | 6.20 | 6.20 |
| Jan 25 | 38.2 | 20.2 | 2.05 | 2.05 | 6.50 | 6.50 |
| Jan 26 | 38.4 | 20.3 | 2.13 | 2.13 | 6.80 | 6.80 |
| Jan 27 | 38.6 | 20.4 | 2.21 | 2.21 | 7.00 | 7.00 |
| Jan 28 | 38.7 | 20.5 | 2.29 | 2.29 | 7.30 | 7.30 |
| Jan 29 | 38.9 | 20.6 | 2.37 | 2.37 | 7.60 | 7.60 |
| Jan 30 | 39.1 | 20.8 | 2.45 | 2.45 | 7.80 | 7.80 |
| Jan 31 | 39.3 | 20.9 | 2.54 | 2.54 | 8.10 | 8.10 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Charleston - November 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Nov 1 | 69.1 | 51.1 | T |
| Nov 2 | 62.1 | 52.0 | 0.04 |
| Nov 3 | 78.1 | 60.1 | 0.00 |
| Nov 4 | 73.0 | 54.0 | 0.46 |
| Nov 5 | 69.1 | 46.0 | 0.00 |
| Nov 6 | 54.0 | 42.1 | T |
| Nov 7 | 55.9 | 23.0 | 0.00 |
| Nov 8 | 66.9 | 26.1 | T |
| Nov 9 | 70.0 | 34.0 | 0.00 |
| Nov 10 | 72.0 | 45.0 | 0.00 |
| Nov 11 | – | – | – |
| Nov 12 | – | – | – |
| Nov 13 | – | – | – |
| Nov 14 | – | – | – |
| Nov 15 | – | – | – |
| Nov 16 | – | – | – |
| Nov 17 | – | – | – |
| Nov 18 | – | – | – |
| Nov 19 | – | – | – |
| Nov 20 | – | – | – |
| Nov 21 | – | – | – |
| Nov 22 | – | – | – |
| Nov 23 | – | – | – |
| Nov 24 | – | – | – |
| Nov 25 | – | – | – |
| Nov 26 | – | – | – |
| Nov 27 | – | – | – |
| Nov 28 | – | – | – |
| Nov 29 | – | – | – |
| Nov 30 | – | – | – |
The data for November 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature78.1ºF · Nov 3
- Lowest max temperature54.0ºF · Nov 6
- Highest min temperature60.1ºF · Nov 3
- Lowest min temperature23.0ºF · Nov 7
Geo Charleston - Illinois
Location
- Country
- United States
- State
- Illinois
- County
- Coles
- City
- Charleston
- Zip Code
- 61920
- Elevation
- 650 ft
- Longitude
- -88.18
- Latitude
- 39.50
- ICAO
- –
- IATA
- –