Typical Weather in Rockford, IL in December
34° F Avg High
19° F Avg Low
5 Rainy Days
☀️ Temperature Summary
Highs in December are typically around 34°F, which is cooler than usual in Rockford. Pack a jacket if you're considering a visit to Rockford at this time. You can expect overnight lows near 19°F most days. Daily high temperatures can range between 41°F and NaN°F for the month of December.
You may want to consider a warmer month to visit Rockford, unless you're ready to brave the cold. If you're looking to travel when it's warmer, you might consider visiting in November instead, when daily highs are typically closer to 47°.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
In December you can expect close to a 16% chance of rain for any given day. It rains less than usual in December, with total rainfall for the month typically near 2 inches.
Rainfall Throughout the Year
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