Wheaton weather in January: Wheaton, Illinois: normal highs, lows, rain and records for January
Wheaton in January has a normal high of 33°F and a normal low of 17°F, a daily mean of 25°F, holding near 33°F all month. Measurable precipitation falls on 11 days in a normal January, 2.12 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 0°C and low of −8°C, 54 mm of precipitation and 24 cm of snow in January.
- NOAA stationWheaton (3 mi SE)
- Station IDUSC00119221
- Location41.81°N 88.07°W
- Elevation680 ft (207 m)
- From the center4 miles
- Population53,741
- Jan 33° 17°
- Feb 38° 20°
- Mar 50° 29°
- Apr 63° 38°
- May 74° 49°
- Jun 83° 59°
- Jul 86° 63°
- Aug 84° 62°
- Sep 78° 54°
- Oct 65° 43°
- Nov 50° 32°
- Dec 38° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Wheaton in January?
The normal high is 33°F and the normal low 17°F, for a daily mean of 24.8°F. January is 5.4°F cooler than December and 3.8°F cooler than February. January is the 12th warmest month of the year in Wheaton and the 11th wettest, and the snowiest. Across the month the normal high falls 1°F, from 34°F on January 1 to 33°F on January 31. From one year to the next January's mean temperature typically moves about 4.7°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 20°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 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 34°F | 19°F | 32% | 15% |
| January 8 | 33°F | 18°F | 33% | 16% |
| January 15 | 32°F | 16°F | 33% | 16% |
| January 22 | 32°F | 16°F | 32% | 15% |
| January 31 | 33°F | 16°F | 31% | 14% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 1, coldest night January 22)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 34°F | 19°F | 32% | 15% | 9 h 10 min |
| January 2 | 34°F | 19°F | 32% | 15% | 9 h 10 min |
| January 3 | 34°F | 19°F | 32% | 16% | 9 h 10 min |
| January 4 | 34°F | 19°F | 33% | 16% | 9 h 10 min |
| January 5 | 34°F | 18°F | 33% | 16% | 9 h 10 min |
| January 6 | 33°F | 18°F | 33% | 16% | 9 h 20 min |
| January 7 | 33°F | 18°F | 33% | 16% | 9 h 20 min |
| January 8 | 33°F | 18°F | 33% | 16% | 9 h 20 min |
| January 9 | 33°F | 18°F | 33% | 16% | 9 h 20 min |
| January 10 | 33°F | 17°F | 33% | 16% | 9 h 20 min |
| January 11 | 33°F | 17°F | 33% | 16% | 9 h 20 min |
| January 12 | 33°F | 17°F | 33% | 16% | 9 h 20 min |
| January 13 | 33°F | 17°F | 33% | 16% | 9 h 20 min |
| January 14 | 33°F | 17°F | 33% | 16% | 9 h 30 min |
| January 15 | 32°F | 16°F | 33% | 16% | 9 h 30 min |
| January 16 | 32°F | 16°F | 33% | 16% | 9 h 30 min |
| January 17 | 32°F | 16°F | 33% | 16% | 9 h 30 min |
| January 18 | 32°F | 16°F | 33% | 16% | 9 h 30 min |
| January 19 | 32°F | 16°F | 33% | 16% | 9 h 30 min |
| January 20 | 32°F | 16°F | 33% | 16% | 9 h 40 min |
| January 21 | 32°F | 16°F | 32% | 15% | 9 h 40 min |
| January 22 | 32°F | 16°F | 32% | 15% | 9 h 40 min |
| January 23 | 32°F | 16°F | 32% | 15% | 9 h 40 min |
| January 24 | 32°F | 16°F | 32% | 15% | 9 h 40 min |
| January 25 | 32°F | 16°F | 32% | 15% | 9 h 50 min |
| January 26 | 33°F | 16°F | 32% | 15% | 9 h 50 min |
| January 27 | 33°F | 16°F | 31% | 15% | 9 h 50 min |
| January 28 | 33°F | 16°F | 31% | 15% | 9 h 50 min |
| January 29 | 33°F | 16°F | 31% | 14% | 9 h 50 min |
| January 30 | 33°F | 16°F | 31% | 14% | 10 h |
| January 31 | 33°F | 16°F | 31% | 14% | 10 h |
- Normal high
- 33°FJanuary average
- Normal low
- 17°FJanuary average
- Precipitation
- 2.12 inmonth total
- Days with precipitation
- 110.01 inch or more
- Snowfall
- 9.3 inmonth total
- Nights at 32°F or colder
- 28
- Daylight
- 9 h 10 min to 10 hJanuary 1 to January 31
- Sunshine
- 61%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00119221; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Wheaton in January?
On a given January day the chance of 0.01 inch or more is 32% on average, highest around January 11 (33%). In all, 2.12 in falls on 11 days of a normal January.
In a normal January in Wheaton, 28 nights fall to freezing, 13 days stay below freezing all day and snowfall averages 9.3 inches.
Snow falls on 6 days in a normal January, and an inch or more covers the ground on 17 days.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00119221.
What are the records for January in Wheaton?
The warmest January temperature on this station's record (since 1895) is 65°F, on January 31, 1989; the coldest is −26°F, on January 20, 1985. The wettest January brought 5.55 in (1960); the snowiest, 41.1 inches (1979).
The January mean against the 1991-2020 normal of 24.8°F: 2021 26.6°F (+1.8), 2022 17.5°F (−7.3), 2023 28.8°F (+4.0), 2024 22.4°F (−2.4), 2025 19.1°F (−5.7), 2026 20.9°F (−3.9). 2 of 6 ran warmer than normal.
| January | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 26.6°F | +1.8°F | 1.95 in |
| 2022 | 17.5°F | −7.3°F | 1.00 in |
| 2023 | 28.8°F | +4.0°F | 2.85 in |
| 2024 | 22.4°F | −2.4°F | 3.42 in |
| 2025 | 19.1°F | −5.7°F | 0.97 in |
| 2026 | 20.9°F | −3.9°F | 2.33 in |
Source: records: ACIS, station USC00119221; recent months: ACIS, station USC00119221. Records and recent months use complete months only.
How does January in Wheaton 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; Wheaton's is 33°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.