Weather in Naperville in January
Naperville, United States averages a high of -0.7°C (30.7°F) and low of -8.7°C (16.3°F) in January, with 8 rain days and 5.4 hours of daily sunshine. Travel score: 40/100 (Mixed). The best time to visit Naperville is September.
High
-1°C31°F
Low
-9°C16°F
🌧️
8
rain days
☀️
5.4
hrs/day sunshine
💧
75%
humidity
40— Mixed
January in Naperville is freezing and occasionally wet — bring heavy winter clothing.
What are the average temperatures in Naperville?
How much does it rain in Naperville in January?
Naperville receives an average of 54.5mm of rainfall across 8 rainy days in January. The annual total is 962.5mm.
What should I pack for Naperville in January?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Heavy winter coat
Cold weather with highs around -1°C
🩳
Thermal base layers
Stay warm in freezing temperatures
🧤
Warm gloves
Cold nights around -9°C
🧣
Warm scarf
Protect against cold winds
Traveling to United States in January?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31