December 2025 OBS and Discussion

[steve392]

2 hours ago, psv88 said:

My yard a mess after these gusts. Weather station tripod blew over!

Hopefully it wasn't damaged 

[ForestHillWx]

“Lies, damned lies and statistics”… be careful with stats and stick to real time observations. 

[Krs4Lfe]

Midwest is getting more heavy snow through this weekend. Clipper moving in tonight, and then another snowstorm that's in Montana/the Northwest tonight moving in through this weekend. It's good to see snow to our north, west, and south. Winter definitely off to a good start for much of the northern tier. Hopefully we get ours this weekend and then we can reset later this month and start off January strong. I'm just concerned about torching late month and then that lasting through January like December 2022. Lots of similarities that month. 

[Roger Smith]

Two Decembers that flipped very greatly from cold first half (+2-4 days) to mild second half would be 1875 and 1895. The means changed as follows: 

1895 ___ mean 1-17 30.7 ___ mean 18-31 47.7 ___ overall 38.4

1875 ___ mean 1-20 29.1 ___ mean 19-31 41.3 ___ overall 33.4

The largest upward shifts in recent Decembers are

2003 ___ mean 1-21 34.5 ___ mean 22-31 44.2 ___ overall 37.6

2005 ___ mean 1-22 32.0 ___ mean 23-31 43.2 ___ overall  35.3

The most prolific change was in Dec 1895 and most of the rest of the winter (Jan-Mar 1896) turned quite cold again. Winter 1875-76 remained mild well into Feb 1876, March was cold.