West Chicago weather in January: West Chicago, Illinois: normal highs, lows, rain and records for January
West Chicago in January has a normal high of 31°F and a normal low of 16°F, a daily mean of 23°F, holding near 31°F all month. Measurable precipitation falls on 8 days in a normal January, 1.27 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of −1°C and low of −9°C, 32 mm of precipitation in January.
- NOAA stationWest Chicago Dupage Airport
- Station IDUSW00094892
- Location41.91°N 88.25°W
- Elevation754 ft (230 m)
- From the center2 miles
- Population25,469
- Jan 31° 16°
- Feb 35° 19°
- Mar 47° 28°
- Apr 60° 38°
- May 71° 49°
- Jun 81° 59°
- Jul 84° 63°
- Aug 82° 62°
- Sep 76° 54°
- Oct 62° 42°
- Nov 48° 31°
- Dec 35° 21°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is West Chicago in January?
The normal high is 31°F and the normal low 16°F, for a daily mean of 23.3°F. January is 5.1°F cooler than December and 3.7°F cooler than February. January is the 12th warmest month of the year in West Chicago and the 11th wettest. 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 19°F and 28°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 27%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 31°F | 18°F | 27% | 12% |
| January 8 | 31°F | 17°F | 27% | 11% |
| January 15 | 30°F | 16°F | 27% | 11% |
| January 22 | 30°F | 15°F | 27% | 10% |
| January 31 | 31°F | 16°F | 26% | 10% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 1, coldest night January 21)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 31°F | 18°F | 27% | 12% | 9 h 10 min |
| January 2 | 31°F | 18°F | 27% | 12% | 9 h 10 min |
| January 3 | 31°F | 17°F | 27% | 12% | 9 h 10 min |
| January 4 | 31°F | 17°F | 27% | 12% | 9 h 10 min |
| January 5 | 31°F | 17°F | 27% | 11% | 9 h 10 min |
| January 6 | 31°F | 17°F | 27% | 11% | 9 h 10 min |
| January 7 | 31°F | 17°F | 27% | 11% | 9 h 20 min |
| January 8 | 31°F | 17°F | 27% | 11% | 9 h 20 min |
| January 9 | 31°F | 17°F | 27% | 11% | 9 h 20 min |
| January 10 | 30°F | 16°F | 27% | 11% | 9 h 20 min |
| January 11 | 30°F | 16°F | 27% | 11% | 9 h 20 min |
| January 12 | 30°F | 16°F | 27% | 11% | 9 h 20 min |
| January 13 | 30°F | 16°F | 27% | 11% | 9 h 20 min |
| January 14 | 30°F | 16°F | 27% | 11% | 9 h 30 min |
| January 15 | 30°F | 16°F | 27% | 11% | 9 h 30 min |
| January 16 | 30°F | 16°F | 27% | 11% | 9 h 30 min |
| January 17 | 30°F | 16°F | 27% | 11% | 9 h 30 min |
| January 18 | 30°F | 16°F | 27% | 11% | 9 h 30 min |
| January 19 | 30°F | 16°F | 27% | 11% | 9 h 30 min |
| January 20 | 30°F | 16°F | 27% | 10% | 9 h 30 min |
| January 21 | 30°F | 15°F | 27% | 10% | 9 h 40 min |
| January 22 | 30°F | 15°F | 27% | 10% | 9 h 40 min |
| January 23 | 30°F | 15°F | 27% | 10% | 9 h 40 min |
| January 24 | 30°F | 15°F | 27% | 10% | 9 h 40 min |
| January 25 | 30°F | 15°F | 27% | 10% | 9 h 40 min |
| January 26 | 31°F | 16°F | 26% | 10% | 9 h 50 min |
| January 27 | 31°F | 16°F | 26% | 10% | 9 h 50 min |
| January 28 | 31°F | 16°F | 26% | 10% | 9 h 50 min |
| January 29 | 31°F | 16°F | 26% | 10% | 9 h 50 min |
| January 30 | 31°F | 16°F | 26% | 10% | 10 h |
| January 31 | 31°F | 16°F | 26% | 10% | 10 h |
- Normal high
- 31°FJanuary average
- Normal low
- 16°FJanuary average
- Precipitation
- 1.27 inmonth total
- Days with precipitation
- 80.01 inch or more
- Nights at 32°F or colder
- 29
- 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 USW00094892; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in West Chicago in January?
On a given January day the chance of 0.01 inch or more is 27% on average, highest around January 1 (27%). In all, 1.27 in falls on 8 days of a normal January.
In a normal January in West Chicago, 29 nights fall to freezing and 17 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094892.
How humid and windy is West Chicago in January?
At 3 p.m. the normal temperature is 29°F with 67% relative humidity and a dew point of 19°F; at 6 a.m. it is 21°F with 81% humidity. The wind averages 10.4 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. | 21°F | 16°F | 81% | 9.2 mph | 51% |
| 9 a.m. | 23°F | 17°F | 78% | 10.5 mph | 50% |
| noon | 28°F | 19°F | 69% | 12.2 mph | – |
| 3 p.m. | 29°F | 19°F | 67% | 12.3 mph | 51% |
| 6 p.m. | 26°F | 19°F | 73% | 10.5 mph | 51% |
| 9 p.m. | 24°F | 18°F | 78% | 9.5 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00094892. 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 West Chicago?
The warmest January temperature on this station's record (since 1997) is 65°F, on January 7, 2008; the coldest is −29°F, on January 31, 2019. The wettest January brought 3.00 in (2013).
The January mean against the 1991-2020 normal of 23.3°F: 2021 26.4°F (+3.1), 2022 17.5°F (−5.8), 2023 30.9°F (+7.6), 2024 24.4°F (+1.1), 2025 21.1°F (−2.2), 2026 20.5°F (−2.8). 3 of 6 ran warmer than normal.
| January | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 26.4°F | +3.1°F | 0.74 in |
| 2022 | 17.5°F | −5.8°F | 0.27 in |
| 2023 | 30.9°F | +7.6°F | 1.86 in |
| 2024 | 24.4°F | +1.1°F | 2.07 in |
| 2025 | 21.1°F | −2.2°F | 1.34 in |
| 2026 | 20.5°F | −2.8°F | 1.17 in |
Source: records: ACIS, station USW00094892; recent months: ACIS, station USW00094892. Records and recent months use complete months only.
How does January in West Chicago 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; West Chicago's is 31°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- West Chicago in December35°F by day, 21°F at night
- West Chicago in February35°F by day, 19°F at night
- West Chicago through the yearEvery month, frost dates, records and recent years
- Illinois in JanuaryThe statewide normal and the warmest and coolest places
- Anna: Illinois's warmest Januarynormal high 45°F