Climate averages 1991–2020
Peoria (Illinois), United States weather
in January.
A cold month with moderate precipitation: the coolest and one of the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cold month in Peoria (Illinois), United States: daytime highs average 0.6°C and nights cool to about -7.4°C. By daytime temperature it is the coolest month of the year.
Expect about 53 mm of precipitation on roughly 8 days, which makes January a month with moderate precipitation (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 9 h 37 min on an average January day.
The nearest other city in this atlas is Bloomington (Illinois), United States (55 km away). In January its highs average 0.7°C, about as warm as Peoria (Illinois), United States, with 58 mm of precipitation.
Among the 498 cities listed in the United States, Peoria (Illinois), United States ranks joint 427th of 498 for the warmest January highs and joint 130th of 498 for the driest January (precipitation, lowest first). The mean January high of those 498 cities is 9.5°C; Peoria (Illinois), United States is 8.8°C cooler than that mean.
From January to February, average highs rise by 2.8°C to 3.4°C, and monthly precipitation stays at 53 mm.
The annual picture
January 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
Peoria (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, selected | 0.6°C-7.4°C | -7.4°C | 53 | 8.0 | 9.610 h |
| February | 3.4°C-5.6°C | -5.6°C | 53 | 7.2 | 10.611 h |
| March | 9.9°C0.1°C | 0.1°C | 75 | 10.1 | 11.912 h |
| April | 16.4°C6.3°C | 6.3°C | 112 | 11.8 | 13.313 h |
| May | 22.1°C12.5°C | 12.5°C | 117 | 13.0 | 14.414 h |
| June | 26.9°C17.8°C | 17.8°C | 111 | 11.6 | 15.015 h |
| July | 28.8°C20.1°C | 20.1°C | 96 | 10.2 | 14.815 h |
| August | 28.0°C19.4°C | 19.4°C | 79 | 9.3 | 13.814 h |
| September | 24.4°C15.4°C | 15.4°C | 76 | 7.9 | 12.513 h |
| October | 17.5°C8.9°C | 8.9°C | 79 | 8.6 | 11.211 h |
| November | 9.7°C2.0°C | 2.0°C | 71 | 8.2 | 10.010 h |
| December | 3.3°C-4.0°C | -4.0°C | 57 | 7.7 | 9.39 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
January in nearby cities
- Bloomington (Illinois), United States in JanuaryUnited States · 55 kmHigh 0.7°C · Low -7.3°C · 58 mm precipitation
- Springfield (Illinois), United States in JanuaryUnited States · 99 kmHigh 1.9°C · Low -6.2°C · 61 mm precipitation
- Decatur in JanuaryUnited States · 109 kmHigh 1.8°C · Low -6.3°C · 69 mm precipitation
- Davenport in JanuaryUnited States · 124 kmHigh -0.9°C · Low -9.3°C · 46 mm precipitation
- Champaign in JanuaryUnited States · 131 kmHigh 1.5°C · Low -6.7°C · 70 mm precipitation
- Joliet in JanuaryUnited States · 156 kmHigh -0.2°C · Low -8.1°C · 58 mm precipitation
- Aurora (Illinois), United States in JanuaryUnited States · 159 kmHigh -0.9°C · Low -8.9°C · 54 mm precipitation
- Bolingbrook in JanuaryUnited States · 169 kmHigh -0.7°C · Low -8.5°C · 54 mm precipitation
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 Peoria) is explained once on the Peoria (Illinois), United States year overview and on the Sources, method and limits page.