Hot-summer humid continental climate
Climate Knoxville - Illinois
Annual high60ºF
Annual low40ºF
Precipitation40.62 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 31 | 14 | 1.88 | 7 |
| Feb | 37 | 19 | 1.97 | 6 |
| Mar | 49 | 28 | 2.79 | 4 |
| Apr | 62 | 39 | 3.95 | 0 |
| May | 72 | 50 | 4.86 | 0 |
| Jun | 81 | 61 | 4.51 | 0 |
| Jul | 84 | 64 | 4.29 | 0 |
| Aug | 83 | 63 | 4.19 | 0 |
| Sep | 76 | 53 | 3.80 | 0 |
| Oct | 64 | 41 | 3.17 | 0 |
| Nov | 49 | 31 | 2.76 | 1 |
| Dec | 35 | 18 | 2.45 | 9 |
- JanHigh 31ºFLow 14ºFPrecip 1.88 inch
- FebHigh 37ºFLow 19ºFPrecip 1.97 inch
- MarHigh 49ºFLow 28ºFPrecip 2.79 inch
- AprHigh 62ºFLow 39ºFPrecip 3.95 inch
- MayHigh 72ºFLow 50ºFPrecip 4.86 inch
- JunHigh 81ºFLow 61ºFPrecip 4.51 inch
- JulHigh 84ºFLow 64ºFPrecip 4.29 inch
- AugHigh 83ºFLow 63ºFPrecip 4.19 inch
- SepHigh 76ºFLow 53ºFPrecip 3.80 inch
- OctHigh 64ºFLow 41ºFPrecip 3.17 inch
- NovHigh 49ºFLow 31ºFPrecip 2.76 inch
- DecHigh 35ºFLow 18ºFPrecip 2.45 inch
Climate summary
What is the average weather in Knoxville, Illinois?
Knoxville experiences a humid continental climate, marked by a very large seasonal temperature contrast. Summers are warm and fairly wet, with the most precipitation arriving in May. Winters are cold, bringing regular snowfall, and are the driest season. Precipitation is spread relatively evenly through the year, with winter moisture often arriving as snow.
Knoxville weather averages
Annual high60ºF
Annual low40ºF
Precipitation40.62 inch
Snowfall27 inch
Daily normals Knoxville - Illinois - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 32.2 | 16.0 | 0.07 | 0.07 | 0.20 | 0.20 |
| Jan 2 | 32.1 | 15.8 | 0.15 | 0.15 | 0.30 | 0.30 |
| Jan 3 | 32.0 | 15.6 | 0.22 | 0.22 | 0.50 | 0.50 |
| Jan 4 | 31.9 | 15.4 | 0.30 | 0.30 | 0.70 | 0.70 |
| Jan 5 | 31.7 | 15.2 | 0.37 | 0.37 | 0.80 | 0.80 |
| Jan 6 | 31.6 | 15.0 | 0.44 | 0.44 | 1.00 | 1.00 |
| Jan 7 | 31.6 | 14.8 | 0.51 | 0.51 | 1.20 | 1.20 |
| Jan 8 | 31.5 | 14.7 | 0.59 | 0.59 | 1.40 | 1.40 |
| Jan 9 | 31.4 | 14.5 | 0.65 | 0.65 | 1.60 | 1.60 |
| Jan 10 | 31.4 | 14.4 | 0.73 | 0.73 | 1.80 | 1.80 |
| Jan 11 | 31.3 | 14.3 | 0.79 | 0.79 | 1.90 | 1.90 |
| Jan 12 | 31.3 | 14.1 | 0.86 | 0.86 | 2.10 | 2.10 |
| Jan 13 | 31.3 | 14.0 | 0.92 | 0.92 | 2.30 | 2.30 |
| Jan 14 | 31.2 | 13.9 | 0.98 | 0.98 | 2.50 | 2.50 |
| Jan 15 | 31.2 | 13.9 | 1.04 | 1.04 | 2.70 | 2.70 |
| Jan 16 | 31.2 | 13.8 | 1.11 | 1.11 | 2.80 | 2.80 |
| Jan 17 | 31.2 | 13.7 | 1.17 | 1.17 | 3.00 | 3.00 |
| Jan 18 | 31.3 | 13.7 | 1.24 | 1.24 | 3.30 | 3.30 |
| Jan 19 | 31.3 | 13.7 | 1.30 | 1.30 | 3.50 | 3.50 |
| Jan 20 | 31.3 | 13.7 | 1.37 | 1.37 | 3.70 | 3.70 |
| Jan 21 | 31.4 | 13.7 | 1.43 | 1.43 | 3.90 | 3.90 |
| Jan 22 | 31.4 | 13.7 | 1.50 | 1.50 | 4.20 | 4.20 |
| Jan 23 | 31.5 | 13.7 | 1.57 | 1.57 | 4.40 | 4.40 |
| Jan 24 | 31.6 | 13.7 | 1.63 | 1.63 | 4.70 | 4.70 |
| Jan 25 | 31.6 | 13.8 | 1.70 | 1.70 | 4.90 | 4.90 |
| Jan 26 | 31.7 | 13.9 | 1.77 | 1.77 | 5.20 | 5.20 |
| Jan 27 | 31.8 | 13.9 | 1.83 | 1.83 | 5.40 | 5.40 |
| Jan 28 | 32.0 | 14.0 | 1.90 | 1.90 | 5.70 | 5.70 |
| Jan 29 | 32.1 | 14.1 | 1.96 | 1.96 | 5.90 | 5.90 |
| Jan 30 | 32.2 | 14.3 | 2.03 | 2.03 | 6.20 | 6.20 |
| Jan 31 | 32.4 | 14.4 | 2.09 | 2.09 | 6.40 | 6.40 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Knoxville - October 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Oct 1 | 68.0 | 61.0 | 0.59 |
| Oct 2 | 71.1 | 52.0 | 2.67 |
| Oct 3 | 69.1 | 46.0 | 0.00 |
| Oct 4 | 72.0 | 46.9 | 0.00 |
| Oct 5 | – | – | – |
| Oct 6 | – | – | – |
| Oct 7 | – | – | – |
| Oct 8 | 82.0 | 48.0 | 0.00 |
| Oct 9 | 79.0 | 52.0 | 0.38 |
| Oct 10 | 79.0 | 54.0 | 0.19 |
| Oct 11 | 81.0 | 51.1 | 0.00 |
| Oct 12 | 81.0 | 55.9 | 0.00 |
| Oct 13 | 87.1 | 66.0 | 0.00 |
| Oct 14 | 84.0 | 63.0 | 0.41 |
| Oct 15 | 68.0 | 59.0 | 0.00 |
| Oct 16 | 66.9 | 45.0 | 0.25 |
| Oct 17 | 54.0 | 33.1 | 0.07 |
| Oct 18 | – | – | – |
| Oct 19 | 64.0 | 37.9 | 0.00 |
| Oct 20 | – | – | – |
| Oct 21 | – | – | – |
| Oct 22 | 73.9 | 46.0 | 0.00 |
| Oct 23 | 75.9 | 46.9 | 0.00 |
| Oct 24 | 73.9 | 48.0 | 0.00 |
| Oct 25 | 73.9 | 46.0 | 0.00 |
| Oct 26 | 77.0 | 48.9 | 0.00 |
| Oct 27 | 75.9 | 51.1 | 0.00 |
| Oct 28 | 68.0 | 51.1 | 0.00 |
| Oct 29 | 77.0 | 53.1 | 0.00 |
| Oct 30 | 71.1 | 44.1 | 0.00 |
| Oct 31 | – | – | – |
The data for October 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 temperature87.1ºF · Oct 13
- Lowest max temperature54.0ºF · Oct 17
- Highest min temperature66.0ºF · Oct 13
- Lowest min temperature33.1ºF · Oct 17
Geo Knoxville - Illinois
Location
- Country
- United States
- State
- Illinois
- County
- –
- City
- Knoxville
- Zip Code
- 61448
- Elevation
- 781 ft
- Longitude
- -90.28
- Latitude
- 40.91
- ICAO
- –
- IATA
- –