USA
Chicago in December: weather & travel advice
This month's data profile
Clear transition month
Chicago in December is climatically mixed. The average daily high is around 3 °C. With about 9 rainy days it is moderate.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
37/100 · #11
Warmth
#10
Dryness
#4
Sun
#12
Published best categories: none
Chicago · DecemberPhoto: G B_NZ · CC BY-SA 2.0Climate facts
- Average high
- 3 °C
- Average low
- -2 °C
- Rainy days (est.)
- 9 rainy days (est.)
- Sun (est.)
- 2 h/day
- Humidity
- 85 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| November | 8 | 3 | 9 | 64 | 2.2 | 79 | 5.5 | 44 |
| December (selected) | 3 | -2 | 9 | 55 | 1.6 | 85 | 5.5 | 37 |
| January | -0 | -5 | 9 | 51 | 1.8 | 87 | 5.7 | 37 |
How do the previous and next months compare?
Baseline: December (37/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| November | +7 | +5.7 °C | +5.1 °C | ±0 | +8.6 mm | +0.6 h | -5.7 % | -0.1 m/s |
| January | ±0 | -2.9 °C | -3.2 °C | ±0 | -3.9 mm | +0.2 h | +1.7 % | +0.2 m/s |
All twelve months in context
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Frequently asked questions
How warm is Chicago in December?
The average daily high is around 3 °C, with an average daily low of about -2 °C.
Does it rain a lot in Chicago in December?
The curated estimate is about 9 rainy days per month, not a directly measured long-term average. Total precipitation averages around 55 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Chicago?
By the climate score, June, July, August and September are the strongest months for Chicago. December is not among them.