Hot-summer humid continental climate
Climate Mattoon - Illinois
Annual high63ºF
Annual low44ºF
Precipitation40.1 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 35 | 20 | 2.26 | 6 |
| Feb | 40 | 24 | 2.14 | 3 |
| Mar | 51 | 33 | 2.71 | 1 |
| Apr | 64 | 44 | 4.01 | 0 |
| May | 75 | 54 | 4.17 | 0 |
| Jun | 84 | 63 | 4.11 | 0 |
| Jul | 87 | 67 | 4.22 | 0 |
| Aug | 85 | 65 | 2.89 | 0 |
| Sep | 79 | 57 | 3.22 | 0 |
| Oct | 66 | 46 | 3.56 | 0 |
| Nov | 52 | 35 | 3.85 | 0 |
| Dec | 38 | 24 | 2.96 | 4 |
- JanHigh 35ºFLow 20ºFPrecip 2.26 inch
- FebHigh 40ºFLow 24ºFPrecip 2.14 inch
- MarHigh 51ºFLow 33ºFPrecip 2.71 inch
- AprHigh 64ºFLow 44ºFPrecip 4.01 inch
- MayHigh 75ºFLow 54ºFPrecip 4.17 inch
- JunHigh 84ºFLow 63ºFPrecip 4.11 inch
- JulHigh 87ºFLow 67ºFPrecip 4.22 inch
- AugHigh 85ºFLow 65ºFPrecip 2.89 inch
- SepHigh 79ºFLow 57ºFPrecip 3.22 inch
- OctHigh 66ºFLow 46ºFPrecip 3.56 inch
- NovHigh 52ºFLow 35ºFPrecip 3.85 inch
- DecHigh 38ºFLow 24ºFPrecip 2.96 inch
Climate summary
What is the average weather in Mattoon, Illinois?
Mattoon experiences a humid continental climate with very large seasonal temperature contrasts. Summers are hot and fairly wet, with precipitation spread relatively evenly throughout the year. Winters are cold and bring regular snowfall, making the cooler months the driest season.
Mattoon weather averages
Annual high63ºF
Annual low44ºF
Precipitation40.1 inch
Snowfall14 inch
Daily normals Mattoon - Illinois - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 35.8 | 22.3 | 0.10 | 0.10 | 0.10 | 0.10 |
| Jan 2 | 35.6 | 22.1 | 0.20 | 0.20 | 0.30 | 0.30 |
| Jan 3 | 35.4 | 21.9 | 0.29 | 0.29 | 0.40 | 0.40 |
| Jan 4 | 35.3 | 21.7 | 0.39 | 0.39 | 0.60 | 0.60 |
| Jan 5 | 35.1 | 21.5 | 0.49 | 0.49 | 0.70 | 0.70 |
| Jan 6 | 35.0 | 21.3 | 0.58 | 0.58 | 0.90 | 0.90 |
| Jan 7 | 34.9 | 21.1 | 0.68 | 0.68 | 1.10 | 1.10 |
| Jan 8 | 34.8 | 20.9 | 0.77 | 0.77 | 1.20 | 1.20 |
| Jan 9 | 34.7 | 20.8 | 0.86 | 0.86 | 1.40 | 1.40 |
| Jan 10 | 34.6 | 20.6 | 0.96 | 0.96 | 1.50 | 1.50 |
| Jan 11 | 34.5 | 20.4 | 1.04 | 1.04 | 1.70 | 1.70 |
| Jan 12 | 34.5 | 20.3 | 1.13 | 1.13 | 1.80 | 1.80 |
| Jan 13 | 34.4 | 20.1 | 1.21 | 1.21 | 2.00 | 2.00 |
| Jan 14 | 34.4 | 20.0 | 1.29 | 1.29 | 2.20 | 2.20 |
| Jan 15 | 34.3 | 19.8 | 1.38 | 1.38 | 2.30 | 2.30 |
| Jan 16 | 34.3 | 19.7 | 1.46 | 1.46 | 2.50 | 2.50 |
| Jan 17 | 34.3 | 19.6 | 1.55 | 1.55 | 2.70 | 2.70 |
| Jan 18 | 34.3 | 19.5 | 1.63 | 1.63 | 2.90 | 2.90 |
| Jan 19 | 34.3 | 19.4 | 1.71 | 1.71 | 3.10 | 3.10 |
| Jan 20 | 34.4 | 19.4 | 1.79 | 1.79 | 3.30 | 3.30 |
| Jan 21 | 34.4 | 19.3 | 1.87 | 1.87 | 3.50 | 3.50 |
| Jan 22 | 34.5 | 19.3 | 1.94 | 1.94 | 3.70 | 3.70 |
| Jan 23 | 34.5 | 19.3 | 2.02 | 2.02 | 3.90 | 3.90 |
| Jan 24 | 34.6 | 19.3 | 2.10 | 2.10 | 4.10 | 4.10 |
| Jan 25 | 34.7 | 19.3 | 2.18 | 2.18 | 4.30 | 4.30 |
| Jan 26 | 34.8 | 19.3 | 2.25 | 2.25 | 4.40 | 4.40 |
| Jan 27 | 35.0 | 19.4 | 2.33 | 2.33 | 4.60 | 4.60 |
| Jan 28 | 35.1 | 19.5 | 2.40 | 2.40 | 4.80 | 4.80 |
| Jan 29 | 35.2 | 19.5 | 2.47 | 2.47 | 4.90 | 4.90 |
| Jan 30 | 35.4 | 19.6 | 2.54 | 2.54 | 5.10 | 5.10 |
| Jan 31 | 35.6 | 19.8 | 2.61 | 2.61 | 5.20 | 5.20 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Mattoon - November 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Nov 1 | – | – | 0.00 |
| Nov 2 | – | – | 0.01 |
| Nov 3 | – | – | 0.00 |
| Nov 4 | – | – | – |
| Nov 5 | – | – | – |
| Nov 6 | – | – | – |
| Nov 7 | – | – | – |
| Nov 8 | – | – | – |
| Nov 9 | – | – | – |
| Nov 10 | – | – | – |
| 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
Geo Mattoon - Illinois
Location
- Country
- United States
- State
- Illinois
- County
- Coles
- City
- Mattoon
- Zip Code
- 61938
- Elevation
- 712 ft
- Longitude
- -88.28
- Latitude
- 39.48
- ICAO
- –
- IATA
- –