O'Fallon and Wright City have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| O'Fallon | Metric | Wright City |
|---|---|---|
| 203 days | Sunny daysclear or partly cloudy skies | 203 days |
| 41 in | Precipitationper year | 41 in |
| 117 days | Wet daysrain or snow per year | 117 days |
| 13 in | Snowfallper year | 13 in |
| 38 days | Hot daysabove 90 °F | 31 days |
| 104 days | Freezing nightsat or below 32 °F | 110 days |
| 69% | Humidityaverage relative | 68% |
| 55 °F | Average temperatureyear round | 55 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| O'Fallon high | 40 | 45 | 56 | 67 | 76 | 84 | 88 | 87 | 80 | 69 | 55 | 44 |
| Wright City high | 39 | 44 | 55 | 66 | 75 | 84 | 88 | 87 | 80 | 68 | 55 | 43 |
| O'Fallon low | 21 | 25 | 33 | 44 | 54 | 64 | 67 | 65 | 57 | 45 | 35 | 26 |
| Wright City low | 20 | 23 | 33 | 43 | 53 | 63 | 66 | 65 | 56 | 45 | 34 | 25 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| O'Fallon | 2.5 | 2.4 | 3.6 | 4.5 | 4.9 | 4.0 | 3.2 | 3.0 | 3.2 | 3.3 | 3.5 | 2.4 |
| Wright City | 2.5 | 2.4 | 3.6 | 4.6 | 5.0 | 4.1 | 3.4 | 3.2 | 3.2 | 3.2 | 3.5 | 2.4 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| O'Fallon | 15 | 13 | 15 | 15 | 16 | 17 | 21 | 22 | 21 | 19 | 17 | 14 |
| Wright City | 15 | 13 | 15 | 15 | 16 | 17 | 20 | 22 | 21 | 20 | 17 | 15 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
O'Fallon vs another city
- O'Fallon vs Dardenne Prairie, MO
- O'Fallon vs Lake St. Louis, MO
- O'Fallon vs Cottleville, MO
- O'Fallon vs St. Peters, MO
- O'Fallon vs Weldon Spring, MO
- O'Fallon vs Wentzville, MO
- O'Fallon vs New York, NY
- O'Fallon vs Los Angeles, CA
- O'Fallon vs Chicago, IL
- O'Fallon vs Houston, TX
- O'Fallon vs Phoenix, AZ
- O'Fallon vs Philadelphia, PA
Wright City vs another city
- Wright City vs Warrenton, MO
- Wright City vs Wentzville, MO
- Wright City vs Troy, MO
- Wright City vs Lake St. Louis, MO
- Wright City vs Dardenne Prairie, MO
- Wright City vs New York, NY
- Wright City vs Los Angeles, CA
- Wright City vs Chicago, IL
- Wright City vs Houston, TX
- Wright City vs Phoenix, AZ
- Wright City 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).