Hot-summer humid continental climate
Climate Park Forest - Illinois
Annual high59ºF
Annual low41ºF
Precipitation41.03 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 31 | 16 | 1.99 | 8 |
| Feb | 35 | 19 | 1.85 | 8 |
| Mar | 46 | 29 | 2.61 | 4 |
| Apr | 59 | 40 | 3.77 | 1 |
| May | 70 | 50 | 4.47 | 0 |
| Jun | 80 | 60 | 4.56 | 0 |
| Jul | 84 | 65 | 4.55 | 0 |
| Aug | 82 | 63 | 4.50 | 0 |
| Sep | 75 | 55 | 3.18 | 0 |
| Oct | 63 | 43 | 3.35 | 0 |
| Nov | 48 | 32 | 3.58 | 1 |
| Dec | 35 | 20 | 2.62 | 6 |
- JanHigh 31ºFLow 16ºFPrecip 1.99 inch
- FebHigh 35ºFLow 19ºFPrecip 1.85 inch
- MarHigh 46ºFLow 29ºFPrecip 2.61 inch
- AprHigh 59ºFLow 40ºFPrecip 3.77 inch
- MayHigh 70ºFLow 50ºFPrecip 4.47 inch
- JunHigh 80ºFLow 60ºFPrecip 4.56 inch
- JulHigh 84ºFLow 65ºFPrecip 4.55 inch
- AugHigh 82ºFLow 63ºFPrecip 4.50 inch
- SepHigh 75ºFLow 55ºFPrecip 3.18 inch
- OctHigh 63ºFLow 43ºFPrecip 3.35 inch
- NovHigh 48ºFLow 32ºFPrecip 3.58 inch
- DecHigh 35ºFLow 20ºFPrecip 2.62 inch
Climate summary
What is the average weather in Park Forest, Illinois?
Park Forest experiences a humid continental climate, marked by a very large seasonal temperature contrast. Summers are warm and fairly wet, with June being the wettest month. Winters are cold and bring regular snowfall, with February typically the driest month. Precipitation is spread relatively evenly through the year, with winter moisture often arriving as snow.
Park Forest weather averages
Annual high59ºF
Annual low41ºF
Precipitation41.03 inch
Snowfall28 inch
Daily normals Park Forest - Illinois - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 32.4 | 17.5 | 0.08 | 0.08 | 0.30 | 0.30 |
| Jan 2 | 32.3 | 17.2 | 0.17 | 0.17 | 0.50 | 0.50 |
| Jan 3 | 32.1 | 17.0 | 0.25 | 0.25 | 0.80 | 0.80 |
| Jan 4 | 31.9 | 16.8 | 0.33 | 0.33 | 1.10 | 1.10 |
| Jan 5 | 31.8 | 16.6 | 0.41 | 0.41 | 1.30 | 1.30 |
| Jan 6 | 31.6 | 16.4 | 0.50 | 0.50 | 1.60 | 1.60 |
| Jan 7 | 31.5 | 16.2 | 0.59 | 0.59 | 1.90 | 1.90 |
| Jan 8 | 31.4 | 16.0 | 0.67 | 0.67 | 2.30 | 2.30 |
| Jan 9 | 31.2 | 15.8 | 0.76 | 0.76 | 2.60 | 2.60 |
| Jan 10 | 31.1 | 15.6 | 0.85 | 0.85 | 2.90 | 2.90 |
| Jan 11 | 31.0 | 15.4 | 0.94 | 0.94 | 3.20 | 3.20 |
| Jan 12 | 30.9 | 15.3 | 1.03 | 1.03 | 3.60 | 3.60 |
| Jan 13 | 30.8 | 15.1 | 1.11 | 1.11 | 3.90 | 3.90 |
| Jan 14 | 30.8 | 15.0 | 1.19 | 1.19 | 4.30 | 4.30 |
| Jan 15 | 30.7 | 14.8 | 1.28 | 1.28 | 4.60 | 4.60 |
| Jan 16 | 30.7 | 14.7 | 1.36 | 1.36 | 5.00 | 5.00 |
| Jan 17 | 30.6 | 14.6 | 1.45 | 1.45 | 5.40 | 5.40 |
| Jan 18 | 30.6 | 14.5 | 1.53 | 1.53 | 5.70 | 5.70 |
| Jan 19 | 30.6 | 14.4 | 1.61 | 1.61 | 6.20 | 6.20 |
| Jan 20 | 30.6 | 14.4 | 1.69 | 1.69 | 6.50 | 6.50 |
| Jan 21 | 30.6 | 14.3 | 1.77 | 1.77 | 6.90 | 6.90 |
| Jan 22 | 30.6 | 14.3 | 1.84 | 1.84 | 7.20 | 7.20 |
| Jan 23 | 30.6 | 14.2 | 1.92 | 1.92 | 7.60 | 7.60 |
| Jan 24 | 30.7 | 14.2 | 2.00 | 2.00 | 7.90 | 7.90 |
| Jan 25 | 30.7 | 14.2 | 2.07 | 2.07 | 8.20 | 8.20 |
| Jan 26 | 30.8 | 14.3 | 2.14 | 2.14 | 8.60 | 8.60 |
| Jan 27 | 30.9 | 14.3 | 2.22 | 2.22 | 8.90 | 8.90 |
| Jan 28 | 31.0 | 14.4 | 2.29 | 2.29 | 9.20 | 9.20 |
| Jan 29 | 31.1 | 14.5 | 2.35 | 2.35 | 9.60 | 9.60 |
| Jan 30 | 31.2 | 14.6 | 2.42 | 2.42 | 9.90 | 9.90 |
| Jan 31 | 31.4 | 14.7 | 2.49 | 2.49 | 10.20 | 10.20 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Park Forest - October 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Oct 1 | 64.9 | 59.0 | 0.76 |
| Oct 2 | 77.0 | 57.0 | 0.43 |
| Oct 3 | 66.0 | 45.0 | 0.00 |
| Oct 4 | 71.1 | 45.0 | 0.00 |
| Oct 5 | – | – | – |
| Oct 6 | – | – | – |
| Oct 7 | – | – | – |
| Oct 8 | 79.0 | 53.1 | 0.00 |
| Oct 9 | 73.9 | 48.9 | 0.00 |
| Oct 10 | 73.9 | 54.0 | 0.00 |
| Oct 11 | 81.0 | 57.0 | 0.00 |
| Oct 12 | 79.0 | 54.0 | 0.00 |
| Oct 13 | 88.0 | 60.1 | 0.00 |
| Oct 14 | 81.0 | 64.0 | 0.11 |
| Oct 15 | 68.0 | 57.9 | 0.00 |
| Oct 16 | 69.1 | 52.0 | 0.23 |
| Oct 17 | 55.9 | 39.9 | 0.06 |
| Oct 18 | – | – | – |
| Oct 19 | 64.0 | 39.0 | 0.00 |
| Oct 20 | – | – | – |
| Oct 21 | – | – | – |
| Oct 22 | 73.0 | 42.1 | 0.00 |
| Oct 23 | 73.0 | 45.0 | 0.00 |
| Oct 24 | 72.0 | 45.0 | 0.00 |
| Oct 25 | 69.1 | 48.0 | 0.00 |
| Oct 26 | 73.9 | 48.9 | 0.00 |
| Oct 27 | 64.0 | 48.9 | 0.00 |
| Oct 28 | 71.1 | 51.1 | 0.00 |
| Oct 29 | 75.9 | 55.0 | 0.00 |
| Oct 30 | 70.0 | 43.0 | 0.00 |
| Oct 31 | 60.1 | 41.0 | 0.00 |
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 temperature88.0ºF · Oct 13
- Lowest max temperature55.9ºF · Oct 17
- Highest min temperature64.0ºF · Oct 14
- Lowest min temperature39.0ºF · Oct 19
Geo Park Forest - Illinois
Location
- Country
- United States
- State
- Illinois
- County
- Cook
- City
- Park Forest
- Zip Code
- 60466
- Elevation
- 696 ft
- Longitude
- -87.68
- Latitude
- 41.48
- ICAO
- –
- IATA
- –