Hot-summer humid continental climate
Climate Aledo - Illinois
Annual high59ºF
Annual low39ºF
Precipitation37.29 inch
| Month | HighºF | LowºF | Precipinch |
|---|---|---|---|
| Jan | 30 | 13 | 1.41 |
| Feb | 35 | 17 | 1.54 |
| Mar | 48 | 27 | 2.46 |
| Apr | 62 | 38 | 3.75 |
| May | 71 | 49 | 4.36 |
| Jun | 81 | 59 | 4.82 |
| Jul | 84 | 63 | 3.94 |
| Aug | 82 | 61 | 4.11 |
| Sep | 75 | 52 | 3.43 |
| Oct | 63 | 41 | 3.02 |
| Nov | 48 | 29 | 2.36 |
| Dec | 33 | 17 | 2.09 |
- JanHigh 30ºFLow 13ºFPrecip 1.41 inch
- FebHigh 35ºFLow 17ºFPrecip 1.54 inch
- MarHigh 48ºFLow 27ºFPrecip 2.46 inch
- AprHigh 62ºFLow 38ºFPrecip 3.75 inch
- MayHigh 71ºFLow 49ºFPrecip 4.36 inch
- JunHigh 81ºFLow 59ºFPrecip 4.82 inch
- JulHigh 84ºFLow 63ºFPrecip 3.94 inch
- AugHigh 82ºFLow 61ºFPrecip 4.11 inch
- SepHigh 75ºFLow 52ºFPrecip 3.43 inch
- OctHigh 63ºFLow 41ºFPrecip 3.02 inch
- NovHigh 48ºFLow 29ºFPrecip 2.36 inch
- DecHigh 33ºFLow 17ºFPrecip 2.09 inch
Climate summary
What is the average weather in Aledo, Illinois?
Aledo 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 precipitation is spread relatively evenly throughout the year, though winter is the driest season overall. The inland location amplifies these distinct seasonal temperature swings.
Aledo weather averages
Annual high59ºF
Annual low39ºF
Precipitation37.29 inch
Daily normals Aledo - Illinois - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 32.1 | 15.4 | 0.06 | 0.06 | 0.20 | 0.20 |
| Jan 2 | 32.0 | 15.2 | 0.12 | 0.12 | 0.30 | 0.30 |
| Jan 3 | 31.8 | 15.0 | 0.18 | 0.18 | 0.50 | 0.50 |
| Jan 4 | 31.7 | 14.8 | 0.24 | 0.24 | 0.70 | 0.70 |
| Jan 5 | 31.5 | 14.5 | 0.30 | 0.30 | 0.80 | 0.80 |
| Jan 6 | 31.4 | 14.3 | 0.36 | 0.36 | 1.00 | 1.00 |
| Jan 7 | 31.3 | 14.1 | 0.42 | 0.42 | 1.20 | 1.20 |
| Jan 8 | 31.1 | 13.9 | 0.47 | 0.47 | 1.40 | 1.40 |
| Jan 9 | 31.0 | 13.8 | 0.53 | 0.53 | 1.60 | 1.60 |
| Jan 10 | 30.9 | 13.6 | 0.58 | 0.58 | 1.80 | 1.80 |
| Jan 11 | 30.9 | 13.4 | 0.64 | 0.64 | 2.00 | 2.00 |
| Jan 12 | 30.8 | 13.3 | 0.69 | 0.69 | 2.20 | 2.20 |
| Jan 13 | 30.7 | 13.1 | 0.74 | 0.74 | 2.40 | 2.40 |
| Jan 14 | 30.7 | 13.0 | 0.78 | 0.78 | 2.60 | 2.60 |
| Jan 15 | 30.6 | 12.9 | 0.83 | 0.83 | 2.80 | 2.80 |
| Jan 16 | 30.6 | 12.8 | 0.89 | 0.89 | 3.00 | 3.00 |
| Jan 17 | 30.6 | 12.7 | 0.94 | 0.94 | 3.10 | 3.10 |
| Jan 18 | 30.5 | 12.6 | 0.99 | 0.99 | 3.40 | 3.40 |
| Jan 19 | 30.5 | 12.5 | 1.05 | 1.05 | 3.60 | 3.60 |
| Jan 20 | 30.5 | 12.5 | 1.10 | 1.10 | 3.80 | 3.80 |
| Jan 21 | 30.6 | 12.5 | 1.16 | 1.16 | 4.00 | 4.00 |
| Jan 22 | 30.6 | 12.4 | 1.21 | 1.21 | 4.20 | 4.20 |
| Jan 23 | 30.6 | 12.4 | 1.26 | 1.26 | 4.40 | 4.40 |
| Jan 24 | 30.7 | 12.5 | 1.32 | 1.32 | 4.60 | 4.60 |
| Jan 25 | 30.7 | 12.5 | 1.38 | 1.38 | 4.90 | 4.90 |
| Jan 26 | 30.8 | 12.5 | 1.43 | 1.43 | 5.10 | 5.10 |
| Jan 27 | 30.9 | 12.6 | 1.48 | 1.48 | 5.30 | 5.30 |
| Jan 28 | 31.0 | 12.7 | 1.52 | 1.52 | 5.60 | 5.60 |
| Jan 29 | 31.1 | 12.8 | 1.57 | 1.57 | 5.80 | 5.80 |
| Jan 30 | 31.3 | 12.9 | 1.62 | 1.62 | 6.00 | 6.00 |
| Jan 31 | 31.4 | 13.1 | 1.67 | 1.67 | 6.20 | 6.20 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Aledo - October 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Oct 1 | 66.9 | 61.0 | 1.09 |
| Oct 2 | 70.0 | 52.0 | 0.94 |
| Oct 3 | 66.9 | 45.0 | 0.00 |
| Oct 4 | 73.0 | 50.0 | 0.00 |
| Oct 5 | – | – | – |
| Oct 6 | – | – | – |
| Oct 7 | – | – | – |
| Oct 8 | 81.0 | 48.0 | 0.00 |
| Oct 9 | 79.0 | 48.0 | 0.07 |
| Oct 10 | 80.1 | 55.9 | 0.24 |
| Oct 11 | 84.0 | 54.0 | 0.00 |
| Oct 12 | 84.9 | 57.9 | 0.00 |
| Oct 13 | 88.0 | 62.1 | 0.00 |
| Oct 14 | 79.0 | 62.1 | 0.19 |
| Oct 15 | 66.0 | 57.0 | 0.07 |
| Oct 16 | 64.9 | 45.0 | 0.21 |
| Oct 17 | 54.0 | 34.0 | T |
| Oct 18 | 57.0 | 35.1 | 0.00 |
| Oct 19 | 66.0 | 39.0 | 0.00 |
| Oct 20 | – | – | – |
| Oct 21 | – | – | – |
| Oct 22 | 75.0 | 48.0 | 0.00 |
| Oct 23 | 77.0 | 46.9 | 0.00 |
| Oct 24 | 75.0 | 52.0 | 0.00 |
| Oct 25 | 75.0 | 52.0 | 0.00 |
| Oct 26 | 78.1 | 51.1 | 0.00 |
| Oct 27 | 78.1 | 50.0 | 0.00 |
| Oct 28 | 70.0 | 50.0 | 0.00 |
| Oct 29 | 78.1 | 52.0 | 0.13 |
| Oct 30 | 69.1 | 46.0 | T |
| 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 temperature88.0ºF · Oct 13
- Lowest max temperature54.0ºF · Oct 17
- Highest min temperature62.1ºF · Oct 13
- Lowest min temperature34.0ºF · Oct 17
Geo Aledo - Illinois
Location
- Country
- United States
- State
- Illinois
- County
- Mercer
- City
- Aledo
- Zip Code
- 61231
- Elevation
- 728 ft
- Longitude
- -90.74
- Latitude
- 41.25
- ICAO
- –
- IATA
- –