Alton and Spanish Lake have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Alton | Metric | Spanish Lake |
|---|---|---|
| 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 | 13 in |
| 30 days | Hot daysabove 90 °F | 37 days |
| 96 days | Freezing nightsat or below 32 °F | 90 days |
| 68% | Humidityaverage relative | 68% |
| 56 °F | Average temperatureyear round | 57 °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 |
| Spanish Lake high | 40 | 45 | 55 | 67 | 76 | 85 | 88 | 87 | 81 | 69 | 55 | 44 |
| Alton low | 22 | 25 | 35 | 45 | 56 | 66 | 69 | 67 | 60 | 48 | 37 | 27 |
| Spanish Lake low | 23 | 26 | 36 | 46 | 57 | 66 | 70 | 68 | 60 | 49 | 37 | 28 |
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 |
| Spanish Lake | 2.8 | 2.5 | 3.7 | 4.6 | 5.0 | 4.2 | 3.4 | 2.9 | 3.3 | 3.4 | 3.6 | 2.6 |
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 |
| Spanish Lake | 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 East Alton, IL
- Alton vs Wood River, IL
- Alton vs Godfrey, IL
- Alton vs Bethalto, IL
- 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
Spanish Lake vs another city
- Spanish Lake vs Glasgow Village, MO
- Spanish Lake vs Bellefontaine Neighbors, MO
- Spanish Lake vs Black Jack, MO
- Spanish Lake vs Old Jamestown, MO
- Spanish Lake vs Jennings, MO
- Spanish Lake vs Ferguson, MO
- Spanish Lake vs New York, NY
- Spanish Lake vs Los Angeles, CA
- Spanish Lake vs Chicago, IL
- Spanish Lake vs Houston, TX
- Spanish Lake vs Phoenix, AZ
- Spanish Lake 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).