Peoria weather in January: Peoria, Illinois: normal highs, lows, rain and records for January
Peoria in January has a normal high of 34°F and a normal low of 18°F, a daily mean of 26°F, holding near 34°F all month. Measurable precipitation falls on 10 days in a normal January, 2.06 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 1°C and low of −8°C, 52 mm of precipitation and 20 cm of snow in January.
- NOAA stationGeneral Wayne A. Downing International Airport
- Station IDUSW00014842
- Location40.67°N 89.68°W
- Elevation650 ft (198 m)
- From the center7 miles
- Population111,696
- Jan 34° 18°
- Feb 39° 21°
- Mar 51° 32°
- Apr 64° 42°
- May 74° 53°
- Jun 83° 62°
- Jul 86° 66°
- Aug 85° 64°
- Sep 78° 56°
- Oct 65° 44°
- Nov 51° 33°
- Dec 39° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Peoria in January?
The normal high is 34°F and the normal low 18°F, for a daily mean of 25.6°F. January is 5.3°F cooler than December and 4.4°F cooler than February. January is the 12th warmest month of the year in Peoria and the 11th wettest, and the snowiest. From one year to the next January's mean temperature typically moves about 4.8°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 21°F and 30°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 32%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 34°F | 19°F | 32% | 16% |
| January 8 | 34°F | 18°F | 32% | 16% |
| January 15 | 33°F | 17°F | 32% | 15% |
| January 22 | 33°F | 17°F | 32% | 14% |
| January 31 | 34°F | 18°F | 31% | 15% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 1, coldest night January 19)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 34°F | 19°F | 32% | 16% | 9 h 20 min |
| January 2 | 34°F | 19°F | 32% | 16% | 9 h 20 min |
| January 3 | 34°F | 19°F | 32% | 16% | 9 h 20 min |
| January 4 | 34°F | 19°F | 32% | 16% | 9 h 20 min |
| January 5 | 34°F | 19°F | 32% | 16% | 9 h 20 min |
| January 6 | 34°F | 18°F | 32% | 16% | 9 h 20 min |
| January 7 | 34°F | 18°F | 32% | 16% | 9 h 20 min |
| January 8 | 34°F | 18°F | 32% | 16% | 9 h 20 min |
| January 9 | 34°F | 18°F | 32% | 15% | 9 h 30 min |
| January 10 | 33°F | 18°F | 32% | 15% | 9 h 30 min |
| January 11 | 33°F | 18°F | 32% | 15% | 9 h 30 min |
| January 12 | 33°F | 18°F | 32% | 15% | 9 h 30 min |
| January 13 | 33°F | 17°F | 32% | 15% | 9 h 30 min |
| January 14 | 33°F | 17°F | 32% | 15% | 9 h 30 min |
| January 15 | 33°F | 17°F | 32% | 15% | 9 h 30 min |
| January 16 | 33°F | 17°F | 32% | 15% | 9 h 40 min |
| January 17 | 33°F | 17°F | 32% | 15% | 9 h 40 min |
| January 18 | 33°F | 17°F | 32% | 15% | 9 h 40 min |
| January 19 | 33°F | 17°F | 32% | 15% | 9 h 40 min |
| January 20 | 33°F | 17°F | 32% | 15% | 9 h 40 min |
| January 21 | 33°F | 17°F | 32% | 14% | 9 h 40 min |
| January 22 | 33°F | 17°F | 32% | 14% | 9 h 50 min |
| January 23 | 33°F | 17°F | 31% | 14% | 9 h 50 min |
| January 24 | 34°F | 17°F | 31% | 14% | 9 h 50 min |
| January 25 | 34°F | 17°F | 31% | 14% | 9 h 50 min |
| January 26 | 34°F | 17°F | 31% | 14% | 9 h 50 min |
| January 27 | 34°F | 17°F | 31% | 14% | 9 h 50 min |
| January 28 | 34°F | 17°F | 31% | 14% | 10 h |
| January 29 | 34°F | 17°F | 31% | 14% | 10 h |
| January 30 | 34°F | 17°F | 31% | 14% | 10 h |
| January 31 | 34°F | 18°F | 31% | 15% | 10 h |
- Normal high
- 34°FJanuary average
- Normal low
- 18°FJanuary average
- Precipitation
- 2.06 inmonth total
- Days with precipitation
- 100.01 inch or more
- Snowfall
- 7.7 inmonth total
- Nights at 32°F or colder
- 28
- Daylight
- 9 h 20 min to 10 hJanuary 1 to January 31
- Sunshine
- 64%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014842; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Peoria in January?
On a given January day the chance of 0.01 inch or more is 32% on average, highest around January 9 (32%). In all, 2.06 in falls on 10 days of a normal January.
In a normal January in Peoria, 28 nights fall to freezing, 14 days stay below freezing all day and snowfall averages 7.7 inches.
Snow falls on 6 days in a normal January, and an inch or more covers the ground on 14 days.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014842.
How humid and windy is Peoria in January?
At 3 p.m. the normal temperature is 32°F with 63% relative humidity and a dew point of 20°F; at 6 a.m. it is 22°F with 80% humidity. The wind averages 8.7 mph, most often from the west in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 22°F | 17°F | 80% | 7.6 mph | 49% |
| 9 a.m. | 24°F | 18°F | 77% | 9.0 mph | 47% |
| noon | 30°F | 20°F | 66% | 10.2 mph | 46% |
| 3 p.m. | 32°F | 20°F | 63% | 10.8 mph | 45% |
| 6 p.m. | 29°F | 20°F | 70% | 8.6 mph | 46% |
| 9 p.m. | 26°F | 19°F | 75% | 8.2 mph | 48% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014842. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for January in Peoria?
The warmest January temperature on Peoria's official record (since 1883) is 71°F, on January 23, 1909; the coldest is −27°F, on January 5, 1884. The wettest January brought 8.11 in (1965); the snowiest, 24.7 inches (1979).
The January mean against the 1991-2020 normal of 25.6°F: 2021 28.4°F (+2.8), 2022 20.7°F (−4.9), 2023 33.0°F (+7.4), 2024 25.5°F (−0.1), 2025 22.7°F (−2.9), 2026 23.1°F (−2.5). 2 of 6 ran warmer than normal.
| January | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 28.4°F | +2.8°F | 2.68 in |
| 2022 | 20.7°F | −4.9°F | 0.76 in |
| 2023 | 33.0°F | +7.4°F | 1.71 in |
| 2024 | 25.5°F | −0.1°F | 3.26 in |
| 2025 | 22.7°F | −2.9°F | 1.00 in |
| 2026 | 23.1°F | −2.5°F | 1.38 in |
Source: records: ACIS, NWS threaded record PIAthr; recent months: ACIS, station USW00014842. Records and recent months use complete months only.
How does January in Peoria compare across Illinois?
Across the 144 places PlainClimate covers in Illinois, January normal highs run from 27°F in Galena to 45°F in Anna; Peoria's is 34°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.