Chicago Loop in December
4.4out of 10
Not the best time
Cold: highs around 3°C. Frequent rain: about 9 rainy days.
3°CAvg high
-3°CAvg low
9Rainy days (59 mm)
8:58 hDaylight
07:18Sunrise · 16:16 Sunset
Why this score
- Cold: highs around 3°C
- Frequent rain: about 9 rainy days
- Nights fall to about -3°C
What to wear and pack
- Winter coat, hat and scarf
- Rain jacket or compact umbrella
- Gloves for freezing mornings
How reliable is the forecast?
Rain in December varies a lot between years (±3.2 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 0°C | -7°C | 58 mm | 9 | – | – | 3.9 |
| February | 1°C | -5°C | 52 mm | 7 | – | – | 4.3 |
| March | 7°C | -1°C | 66 mm | 10 | – | – | 5.1 |
| April | 13°C | 5°C | 107 mm | 12 | – | – | 5.9 |
| May | 19°C | 11°C | 104 mm | 12 | – | – | 6.9 |
| June | 25°C | 17°C | 93 mm | 12 | – | – | 7.5 |
| July | 28°C | 20°C | 86 mm | 11 | – | – | 7.6 |
| August | 27°C | 20°C | 92 mm | 11 | – | – | 7.6 |
| September | 23°C | 15°C | 74 mm | 9 | – | – | 7.9 |
| October | 16°C | 9°C | 82 mm | 10 | – | – | 6.9 |
| November | 9°C | 2°C | 67 mm | 9 | – | – | 5.8 |
| December | 3°C | -3°C | 59 mm | 9 | – | – | 4.4 |
Frequently asked questions
How hot is Chicago Loop in December?
Daytime highs average 3°C and nights about -3°C.
When is the best time to visit Chicago Loop?
The best months are September, July, August, June.