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Weather in Naperville, Illinois for January 2026

Your guide to Naperville weather in January - trends and predictions

    Snow Forecast ❄️

  • Naperville typically experiences moderate snowfall in January, with an average of 8 snowy days.
    According to Naperville snow forecast for January 2026, no snow is expected until the end of the month.

    • Temperatures

  • Until now, January 2026 in Naperville has been nearly identical to the historical average, with a temperature of -2.3 °F (showing only a slight deviation of 0 °F).

  • In general, the average temperature in Naperville at the beginning of January is -0.1 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of -0.4 °F by the end of January.

    • More

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Average dry days
17
Dry days
Average rainy days
6
Rainy days
Average snowy days
8
Snow days
Average temperatures
-2°/-8°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Naperville Weather January

Move between months or click on a day
December
February
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
-1°
2
Overcast
1°
3
Overcast
0°
4
Sunny
-2°
5
Patchy rain possible
0°
6
Heavy snow
1°
7
Overcast
0°
8
Light snow
1°
9
Heavy snow
4°
10
Light freezing rain
0°
11
Cloudy
0°
12
Overcast
1°
13
Moderate snow
1°
14
Light freezing rain
-7°
15
Mist
-9°
16
Overcast
-4°
17
Overcast
-4°
18
Light freezing rain
-4°
19
Overcast
-9°
20
Partly cloudy
-8°
21
Freezing fog
-7°
22
Heavy snow
-4°
23
Light freezing rain
-5°
24
Light rain
-6°
25
Overcast
-1°
26
Sunny
-4°
27
Overcast
-2°
28
Overcast
0°
29
Partly cloudy
1°
30
Moderate snow
5°
31
Sunny
-2°

Temperatures trend during January in Naperville

See the weather trend as well as the moving average line

January weather in Naperville day by day

Click on a date for more information
December February
Date Weather Temperatures Rain Snow More
Jan. 1 Overcast
Overcast
 -1° /-6° 0 mm 0 cm
Jan. 2 Overcast
Overcast
 1° /-4° 0 mm 0 cm
Jan. 3 Overcast
Overcast
 0° /-5° 0 mm 0 cm
Jan. 4 Sunny
Sunny
 -2° /-7° 0 mm 0 cm
Jan. 5 Patchy rain possible
Patchy rain possible
 0° /-5° 0 mm 0 cm
Jan. 6 Heavy snow
Heavy snow
 1° /-2° 1.2 mm 1 cm
Jan. 7 Overcast
Overcast
 0° /-3° 0 mm 0 cm
Jan. 8 Light snow
Light snow
 1° /-4° 3.9 mm 0.2 cm
Jan. 9 Heavy snow
Heavy snow
 4° /-3° 10.7 mm 5.3 cm
Jan. 10 Light freezing rain
Light freezing rain
 0° /-4° 2.3 mm 0.9 cm
Jan. 11 Cloudy
Cloudy
 0° /-6° 0.4 mm 0.3 cm
Jan. 12 Overcast
Overcast
 1° /-3° 8.6 mm 6.6 cm
Jan. 13 Moderate snow
Moderate snow
 1° /-9° 1.3 mm 0.1 cm
Jan. 14 Light freezing rain
Light freezing rain
 -7° /-13° 0.1 mm 0 cm
Jan. 15 Mist
Mist
 -9° /-16° 0 mm 0 cm
Jan. 16 Overcast
Overcast
 -4° /-13° 2.3 mm 1.7 cm
Jan. 17 Overcast
Overcast
 -4° /-11° 1.4 mm 1 cm
Jan. 18 Light freezing rain
Light freezing rain
 -4° /-12° 0.6 mm 0.5 cm
Jan. 19 Overcast
Overcast
 -9° /-16° 0.5 mm 0.4 cm
Jan. 20 Partly cloudy
Partly cloudy
 -8° /-19° 0 mm 0 cm
Jan. 21 Freezing fog
Freezing fog
 -7° /-16° 0 mm 0 cm
Jan. 22 Heavy snow
Heavy snow
 -4° /-12° 0.9 mm 0.3 cm
Jan. 23 Light freezing rain
Light freezing rain
 -5° /-11° 3.8 mm 0 cm
Jan. 24 Light rain
Light rain
 -6° /-12° 1.7 mm 0 cm
Jan. 25 Overcast
Overcast
 -1° /-7° 3.9 mm 0 cm
Jan. 26 Sunny
Sunny
 -4° /-9° 1.4 mm 0 cm
Jan. 27 Overcast
Overcast
 -2° /-7° 0.2 mm 0 cm
Jan. 28 Overcast
Overcast
 0° /-7° 0 mm 0 cm
Jan. 29 Partly cloudy
Partly cloudy
 1° /-6° 0 mm 0 cm
Jan. 30 Moderate snow
Moderate snow
 5° /-1° 0.3 mm 0.1 cm
Jan. 31 Sunny
Sunny
 -2° /-13° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Naperville in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Naperville forecast closer to your planned date for the most up-to-date weather information.
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Naperville in January - FAQ

What are the expected maximum and minimum temperatures in Naperville during January?

Brace for cold days with temperatures not exceeding -2° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.

How much rainfall should be expected in Naperville during January?

Moderate rainfall is anticipated in Naperville during January, with a total of 50.7 mm spread over approximately 6 days. Considering plans for rainy days is advisable.

Will it snow in Naperville in January 2026?

Naperville experiences an average snowfall of 22.05 cm during January, occurring over 8 days.

What are the typical wind conditions in Naperville during January?

The average wind speed in Naperville during January is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

Naperville snow forecast January 2026

Track daily snowfall levels and discover Naperville’s snowy potential this January ❄️
On average, Naperville sees 8 snowy days during January, with approximately 22.1 cm of total snowfall.

January rainfall patterns in Naperville

Explore the daily rainfall trends and prepare for Napervilles January weather 💧
Typically, Naperville has 6 rainy days in January with a total of 50.7 mm of rainfall.

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Location coordinates Where is Naperville?

Get accurate weather forecasts for Naperville, located at latitude 41.786 and longitude -88.147. Stay updated with localized weather information tailored for Naperville.

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