Hot-summer humid continental climate
Climate Rock Island - Illinois
Annual high60ºF
Annual low43ºF
Precipitation37.06 inch
| Month | HighºF | LowºF | Precipinch |
|---|---|---|---|
| Jan | 32 | 16 | 1.35 |
| Feb | 37 | 21 | 1.52 |
| Mar | 49 | 31 | 2.65 |
| Apr | 62 | 43 | 3.44 |
| May | 73 | 54 | 4.57 |
| Jun | 82 | 64 | 5.00 |
| Jul | 85 | 68 | 4.06 |
| Aug | 83 | 66 | 4.14 |
| Sep | 76 | 58 | 2.99 |
| Oct | 64 | 45 | 2.95 |
| Nov | 49 | 34 | 2.46 |
| Dec | 35 | 21 | 1.93 |
- JanHigh 32ºFLow 16ºFPrecip 1.35 inch
- FebHigh 37ºFLow 21ºFPrecip 1.52 inch
- MarHigh 49ºFLow 31ºFPrecip 2.65 inch
- AprHigh 62ºFLow 43ºFPrecip 3.44 inch
- MayHigh 73ºFLow 54ºFPrecip 4.57 inch
- JunHigh 82ºFLow 64ºFPrecip 5.00 inch
- JulHigh 85ºFLow 68ºFPrecip 4.06 inch
- AugHigh 83ºFLow 66ºFPrecip 4.14 inch
- SepHigh 76ºFLow 58ºFPrecip 2.99 inch
- OctHigh 64ºFLow 45ºFPrecip 2.95 inch
- NovHigh 49ºFLow 34ºFPrecip 2.46 inch
- DecHigh 35ºFLow 21ºFPrecip 1.93 inch
Climate summary
What is the average weather in Rock Island, Illinois?
Rock Island experiences a humid continental climate, marked by very large seasonal temperature contrasts. Summers are warm, while winters are cold. The area is fairly wet overall, with precipitation spread relatively evenly throughout the year, though summer tends to be the wettest season.
Rock Island weather averages
Annual high60ºF
Annual low43ºF
Precipitation37.06 inch
Daily normals Rock Island - Illinois - January
| Day | HighºF | LowºF | Prec/ | Prec/ |
|---|---|---|---|---|
| Jan 1 | 31.6 | 15.2 | 0.05 | 0.05 |
| Jan 2 | 31.4 | 15.0 | 0.10 | 0.10 |
| Jan 3 | 31.3 | 14.8 | 0.16 | 0.16 |
| Jan 4 | 31.1 | 14.6 | 0.21 | 0.21 |
| Jan 5 | 31.0 | 14.3 | 0.26 | 0.26 |
| Jan 6 | 30.9 | 14.1 | 0.31 | 0.31 |
| Jan 7 | 30.8 | 14.0 | 0.35 | 0.35 |
| Jan 8 | 30.7 | 13.8 | 0.40 | 0.40 |
| Jan 9 | 30.7 | 13.6 | 0.45 | 0.45 |
| Jan 10 | 30.6 | 13.4 | 0.50 | 0.50 |
| Jan 11 | 30.6 | 13.3 | 0.55 | 0.55 |
| Jan 12 | 30.5 | 13.2 | 0.59 | 0.59 |
| Jan 13 | 30.5 | 13.0 | 0.64 | 0.64 |
| Jan 14 | 30.5 | 12.9 | 0.68 | 0.68 |
| Jan 15 | 30.5 | 12.9 | 0.73 | 0.73 |
| Jan 16 | 30.5 | 12.8 | 0.78 | 0.78 |
| Jan 17 | 30.5 | 12.7 | 0.82 | 0.82 |
| Jan 18 | 30.6 | 12.7 | 0.87 | 0.87 |
| Jan 19 | 30.6 | 12.7 | 0.92 | 0.92 |
| Jan 20 | 30.7 | 12.7 | 0.97 | 0.97 |
| Jan 21 | 30.8 | 12.7 | 1.01 | 1.01 |
| Jan 22 | 30.9 | 12.7 | 1.06 | 1.06 |
| Jan 23 | 31.0 | 12.7 | 1.11 | 1.11 |
| Jan 24 | 31.1 | 12.8 | 1.16 | 1.16 |
| Jan 25 | 31.2 | 12.9 | 1.20 | 1.20 |
| Jan 26 | 31.3 | 13.0 | 1.25 | 1.25 |
| Jan 27 | 31.5 | 13.1 | 1.30 | 1.30 |
| Jan 28 | 31.6 | 13.2 | 1.34 | 1.34 |
| Jan 29 | 31.8 | 13.4 | 1.39 | 1.39 |
| Jan 30 | 32.0 | 13.5 | 1.44 | 1.44 |
| Jan 31 | 32.2 | 13.7 | 1.49 | 1.49 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Rock Island - November 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Nov 1 | 66.9 | 53.1 | 0.03 |
| Nov 2 | 66.0 | 39.0 | 0.03 |
| Nov 3 | 69.1 | 46.0 | 0.24 |
| Nov 4 | 64.9 | 50.0 | 0.03 |
| Nov 5 | 53.1 | 39.0 | 0.08 |
| Nov 6 | 43.0 | 27.0 | 0.00 |
| Nov 7 | 54.0 | 27.0 | 0.00 |
| Nov 8 | 64.0 | 42.1 | 0.00 |
| Nov 9 | 64.9 | 34.0 | 0.00 |
| Nov 10 | 66.9 | 30.9 | 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 temperature69.1ºF · Nov 3
- Lowest max temperature43.0ºF · Nov 6
- Highest min temperature53.1ºF · Nov 1
- Lowest min temperature27.0ºF · Nov 6
Geo Rock Island - Illinois
Location
- Country
- United States
- State
- Illinois
- County
- Rock Island
- City
- Rock Island
- Zip Code
- 61201
- Elevation
- 561 ft
- Longitude
- -90.58
- Latitude
- 41.51
- ICAO
- –
- IATA
- –