Belleville weather in January: Belleville, Illinois: normal highs, lows, rain and records for January
Belleville in January has a normal high of 43°F and a normal low of 24°F, a daily mean of 34°F, rising from 43°F on the 1st to 45°F by the 31st. Measurable precipitation falls on 7 days in a normal January, 2.56 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 6°C and low of −4°C, 65 mm of precipitation and 9 cm of snow in January.
- NOAA stationBelleville Siu Research
- Station IDUSW00013802
- Location38.52°N 89.85°W
- Elevation450 ft (137 m)
- From the center8 miles
- Population40,560
- Jan 43° 24°
- Feb 49° 28°
- Mar 59° 36°
- Apr 71° 46°
- May 79° 56°
- Jun 87° 65°
- Jul 90° 68°
- Aug 89° 65°
- Sep 83° 57°
- Oct 73° 47°
- Nov 58° 37°
- Dec 46° 28°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Belleville in January?
The normal high is 43°F and the normal low 24°F, for a daily mean of 33.6°F. January is 3.7°F cooler than December and 4.7°F cooler than February. January is the 12th warmest month of the year in Belleville and the 11th wettest, and the snowiest. Across the month the normal high rises 2°F, from 43°F on January 1 to 45°F on January 31. From one year to the next January's mean temperature typically moves about 4.0°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 30°F and 38°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 24%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 43°F | 25°F | 23% | 16% |
| January 8 | 42°F | 24°F | 23% | 16% |
| January 15 | 42°F | 24°F | 23% | 15% |
| January 22 | 43°F | 24°F | 23% | 14% |
| January 31 | 45°F | 25°F | 24% | 14% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 31, coldest night January 15)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 43°F | 25°F | 23% | 16% | 9 h 30 min |
| January 2 | 43°F | 25°F | 23% | 16% | 9 h 30 min |
| January 3 | 43°F | 25°F | 23% | 16% | 9 h 30 min |
| January 4 | 43°F | 25°F | 23% | 16% | 9 h 30 min |
| January 5 | 42°F | 25°F | 23% | 16% | 9 h 30 min |
| January 6 | 42°F | 25°F | 23% | 16% | 9 h 40 min |
| January 7 | 42°F | 25°F | 23% | 16% | 9 h 40 min |
| January 8 | 42°F | 24°F | 23% | 16% | 9 h 40 min |
| January 9 | 42°F | 24°F | 23% | 15% | 9 h 40 min |
| January 10 | 42°F | 24°F | 23% | 15% | 9 h 40 min |
| January 11 | 42°F | 24°F | 23% | 15% | 9 h 40 min |
| January 12 | 42°F | 24°F | 23% | 15% | 9 h 40 min |
| January 13 | 42°F | 24°F | 23% | 15% | 9 h 40 min |
| January 14 | 42°F | 24°F | 23% | 15% | 9 h 40 min |
| January 15 | 42°F | 24°F | 23% | 15% | 9 h 50 min |
| January 16 | 42°F | 24°F | 23% | 15% | 9 h 50 min |
| January 17 | 43°F | 24°F | 23% | 15% | 9 h 50 min |
| January 18 | 43°F | 24°F | 23% | 15% | 9 h 50 min |
| January 19 | 43°F | 24°F | 23% | 15% | 9 h 50 min |
| January 20 | 43°F | 24°F | 23% | 14% | 9 h 50 min |
| January 21 | 43°F | 24°F | 23% | 14% | 9 h 50 min |
| January 22 | 43°F | 24°F | 23% | 14% | 10 h |
| January 23 | 43°F | 24°F | 23% | 14% | 10 h |
| January 24 | 43°F | 24°F | 23% | 14% | 10 h |
| January 25 | 44°F | 24°F | 23% | 14% | 10 h |
| January 26 | 44°F | 24°F | 23% | 14% | 10 h |
| January 27 | 44°F | 24°F | 23% | 14% | 10 h |
| January 28 | 44°F | 24°F | 24% | 14% | 10 h 10 min |
| January 29 | 44°F | 25°F | 24% | 14% | 10 h 10 min |
| January 30 | 44°F | 25°F | 24% | 14% | 10 h 10 min |
| January 31 | 45°F | 25°F | 24% | 14% | 10 h 10 min |
- Normal high
- 43°FJanuary average
- Normal low
- 24°FJanuary average
- Precipitation
- 2.56 inmonth total
- Days with precipitation
- 70.01 inch or more
- Snowfall
- 3.4 inmonth total
- Nights at 32°F or colder
- 24
- Daylight
- 9 h 30 min to 10 h 10 minJanuary 1 to January 31
- Sunshine
- 66%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013802; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Belleville in January?
On a given January day the chance of 0.01 inch or more is 23% on average, highest around January 31 (24%). In all, 2.56 in falls on 7 days of a normal January, 1 of them with an inch or more.
In a normal January in Belleville, 24 nights fall to freezing, 6 days stay below freezing all day and snowfall averages 3.4 inches.
Snow falls on 2 days in a normal January, and an inch or more covers the ground on 6 days.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013802.
How humid and windy is Belleville in January?
At 3 p.m. the normal temperature is 40°F with 56% relative humidity and a dew point of 25°F; at 6 a.m. it is 28°F with 82% humidity. The wind averages 8.3 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. | 28°F | 23°F | 82% | 6.9 mph | 48% |
| 9 a.m. | 31°F | 24°F | 77% | 9.1 mph | 43% |
| noon | 37°F | 25°F | 62% | 10.2 mph | 40% |
| 3 p.m. | 40°F | 25°F | 56% | 10.4 mph | 41% |
| 6 p.m. | 35°F | 25°F | 67% | 7.9 mph | 44% |
| 9 p.m. | 32°F | 25°F | 76% | 7.5 mph | 47% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013802. 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 Belleville?
The warmest January temperature on this station's record (since 1948) is 75°F, on January 24, 1950; the coldest is −27°F, on January 17, 1977. The wettest January brought 9.12 in (1950); the snowiest, 22.5 inches (1979).
The January mean against the 1991-2020 normal of 33.6°F: 2021 33.7°F (+0.1), 2022 27.7°F (−5.9), 2023 38.3°F (+4.7), 2024 28.3°F (−5.3), 2025 25.2°F (−8.4), 2026 30.4°F (−3.2). 2 of 6 ran warmer than normal.
| January | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 33.7°F | +0.1°F | 3.03 in |
| 2022 | 27.7°F | −5.9°F | 1.50 in |
| 2023 | 38.3°F | +4.7°F | 4.05 in |
| 2024 | 28.3°F | −5.3°F | 5.46 in |
| 2025 | 25.2°F | −8.4°F | – |
| 2026 | 30.4°F | −3.2°F | – |
Source: records: ACIS, station USW00013802; recent months: ACIS, station USW00013802. Records and recent months use complete months only.
How does January in Belleville 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; Belleville's is 43°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.