December 2025 General Discussion

[beavis1729]

3 hours ago, Chambana said:

-9 in Champaign with a windchill of -30

KCMI hit -14, with a wind chill of -31.

[Jackstraw]

For posterity. Nearly the entire sub covered in snow.

 at once. That doesn't happen very often, at least not lately.

[sbnwx85]

Picked up 1.5” from the lake. Still getting occasional snow showers but it’s compacting faster than it can accumulate. 4” snow depth. Savoring it before the torch.

[michsnowfreak]

Bitterly cold last night for an outdoor Christmas event, but thought this was a neat shot

[Chicago Storm]

Low temperatures last night/this morning...
-6 RFD
-2 ORD
-1 MDW

Peak wind chills last night/this morning...
-23 RFD
-21 ORD
-21 MDW

 

[Spartman]

Dropped down to -2 this morning, the lowest temp of this season so far. 

Hasn't been our month for a lot of sun so far, but today happens to be the sunniest day of the month.

[frostfern]

Nice mood flake day with a layered 10” on the ground to appreciate.

[Chambana]

8 hours ago, beavis1729 said:

KCMI hit -14, with a wind chill of -31.

Wow yes, you’re right. Just checked hourly obs. I stand corrected. 

[Chambana]

Already down to -12 here

[beavis1729]

49 minutes ago, Chambana said:

Already down to -12 here

Right under the center of the high, it looks like. Assuming it stays above -14 before midnight, Champaign had a 1/-14 high/low today, which is a -36.5F departure from the 1991-2020 normal of 37/23.

The -14 low is the coldest temp on record for so early in the season, and records go back more than 130 years. Until today, there were only 2 days in history with a -10 or colder temp on or before December 14th:

12/10/1917: -10

12/11/1917: -12

https://stateclimatologist.web.illinois.edu/wp-content/uploads/2025/12/weather-almanac-2025_Dec.pdf