Alton and East Alton have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Alton | Metric | East Alton |
|---|---|---|
| 202 days | Sunny daysclear or partly cloudy skies | 201 days |
| 41 in | Precipitationper year | 42 in |
| 117 days | Wet daysrain or snow per year | 118 days |
| 13 in | Snowfallper year | 12 in |
| 30 days | Hot daysabove 90 °F | 30 days |
| 96 days | Freezing nightsat or below 32 °F | 95 days |
| 68% | Humidityaverage relative | 68% |
| 56 °F | Average temperatureyear round | 56 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alton high | 39 | 44 | 54 | 66 | 75 | 84 | 87 | 86 | 80 | 68 | 54 | 44 |
| East Alton high | 39 | 44 | 54 | 66 | 75 | 84 | 87 | 86 | 80 | 68 | 54 | 44 |
| Alton low | 22 | 25 | 35 | 45 | 56 | 66 | 69 | 67 | 60 | 48 | 37 | 27 |
| East Alton low | 22 | 25 | 35 | 45 | 56 | 66 | 69 | 67 | 60 | 48 | 37 | 27 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alton | 2.6 | 2.4 | 3.6 | 4.6 | 5.0 | 4.0 | 3.2 | 2.9 | 3.3 | 3.3 | 3.6 | 2.4 |
| East Alton | 2.8 | 2.5 | 3.6 | 4.7 | 5.2 | 4.2 | 3.3 | 2.9 | 3.3 | 3.4 | 3.6 | 2.5 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alton | 14 | 13 | 15 | 15 | 16 | 17 | 21 | 22 | 21 | 19 | 16 | 14 |
| East Alton | 14 | 12 | 15 | 15 | 16 | 17 | 21 | 22 | 21 | 19 | 16 | 14 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Alton vs another city
- Alton vs Wood River, IL
- Alton vs Godfrey, IL
- Alton vs Bethalto, IL
- Alton vs Spanish Lake, MO
- Alton vs Old Jamestown, MO
- Alton vs New York, NY
- Alton vs Los Angeles, CA
- Alton vs Chicago, IL
- Alton vs Houston, TX
- Alton vs Phoenix, AZ
- Alton vs Philadelphia, PA
East Alton vs another city
- East Alton vs Wood River, IL
- East Alton vs Bethalto, IL
- East Alton vs Godfrey, IL
- East Alton vs Spanish Lake, MO
- East Alton vs Edwardsville, IL
- East Alton vs New York, NY
- East Alton vs Los Angeles, CA
- East Alton vs Chicago, IL
- East Alton vs Houston, TX
- East Alton vs Phoenix, AZ
- East Alton vs Philadelphia, PA
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).