Climate averages 1991–2020
Springfield (Illinois), United States weather
in July.
A hot, wet month: the warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Springfield (Illinois), United States: daytime highs average 29.1°C and nights cool to about 20.2°C. By daytime temperature it is the warmest month of the year.
Expect about 91 mm of rain on roughly 10 days, which makes July a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 41 min on an average July day.
The nearest other city in this atlas is Decatur (59 km away). In July its highs average 28.8°C, about as warm as Springfield (Illinois), United States, with 91 mm of rain.
Among the 498 cities listed in the United States, Springfield (Illinois), United States ranks joint 303rd of 498 for the warmest July highs and joint 318th of 498 for the driest July (rainfall, lowest first). The mean July high of those 498 cities is 30.3°C; Springfield (Illinois), United States is 1.2°C cooler than that mean.
From July to August, average highs fall by 0.5°C to 28.6°C, and monthly rainfall falls from 91 mm to 78 mm.
The annual picture
July in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Springfield (Illinois), United States climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.9°C-6.2°C | -6.2°C | 61 | 8.0 | 9.710 h |
| February | 4.7°C-4.6°C | -4.6°C | 57 | 7.6 | 10.711 h |
| March | 10.9°C0.8°C | 0.8°C | 80 | 10.0 | 11.912 h |
| April | 17.4°C6.9°C | 6.9°C | 116 | 11.9 | 13.213 h |
| May | 22.7°C13.0°C | 13.0°C | 117 | 13.3 | 14.314 h |
| June | 27.4°C18.0°C | 18.0°C | 110 | 11.4 | 14.915 h |
| July, selected | 29.1°C20.2°C | 20.2°C | 91 | 10.1 | 14.715 h |
| August | 28.6°C19.5°C | 19.5°C | 78 | 9.3 | 13.714 h |
| September | 25.2°C15.5°C | 15.5°C | 80 | 7.4 | 12.512 h |
| October | 18.4°C9.2°C | 9.2°C | 83 | 8.5 | 11.211 h |
| November | 10.7°C2.4°C | 2.4°C | 84 | 8.3 | 10.010 h |
| December | 4.4°C-3.1°C | -3.1°C | 59 | 8.0 | 9.49 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Decatur in JulyUnited States · 59 kmHigh 28.8°C · Low 19.9°C · 91 mm rain
- Bloomington (Illinois), United States in JulyUnited States · 94 kmHigh 28.2°C · Low 19.3°C · 98 mm rain
- Peoria (Illinois), United States in JulyUnited States · 99 kmHigh 28.8°C · Low 20.1°C · 96 mm rain
- Champaign in JulyUnited States · 124 kmHigh 28.3°C · Low 19.3°C · 92 mm rain
- St. Louis in JulyUnited States · 139 kmHigh 31.0°C · Low 21.6°C · 86 mm rain
- O'Fallon in JulyUnited States · 143 kmHigh 30.8°C · Low 21.6°C · 82 mm rain
- Davenport in JulyUnited States · 207 kmHigh 28.5°C · Low 19.9°C · 91 mm rain
- Joliet in JulyUnited States · 232 kmHigh 28.2°C · Low 19.1°C · 95 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Springfield) is explained once on the Springfield (Illinois), United States year overview and on the Sources, method and limits page.