TheClimateChanger

I don't know. Tough to eyeball, especially with the different color schemes and the 2025 data not necessarily being maxT. Looks like California was several degrees warmer this year, so that would add to the population weighting, but the Ohio Valley and parts of the midwest were cooler. Certainly closer than an aerially-weighted comparison.

I don't pay for Weatherbell or any of those premium sites, so I don't have the current PRISM estimates. They are typically off quite a bit, one way or the other, from NCEI's official numbers anyways.

I'm pretty sure Christmas 2025 easily eclipsed 2021 on an aerial-weighting, buoyed by much higher anomalies across the intermountain west. While sparsely populated, that's a large landmass and it was considerably warmer this year.

Actually, I'll retract that. I don't think the raw data was gridded, so that's not necessarily correct. A top 5 warmest December should be a lock, with the possibility of a record.

Looking VERY likely that this will go into the books as the warmest December on record for the CONUS, may even blow past 2023 by a large margin.

Clearly, the urban heat island effect at work in a town of 31,000 spawled across 3,250 square miles.

To be honest, not seeing much evidence of increasing cold extremes in the Juneau data.

Odd, why were -10s and -20s relatively common from the 1940s to 1970s in Juneau? But only twice since (1995 & 2025)? Very weird. Regardless, a quick search shows downtown Juneau was as low as -17F in 1998, so I don't know why the airport was so much warmer. By contrast, Salt Lake City has been above its prior monthly record high minimum temperature (since 1874!) for two consecutive days, and likely a third unless it drops to 52 or lower by midnight. So I don't think those two events are actually comparable from a historical climate standpoint.

Whoa. What is going on in Pennsylvania and New York on Friday?

For all the bashing of the models, this looks like an incredibly accurate forecast from the Euro AI for the current period.

Maybe not. I was looking more from an eastern United States perspective where many areas are warming by as 8-11F per century in December since 1970, but it looks like it's more 2-4F per century in the Pacific northwest.

Feels pleasant out there today after yesterday’s chill. Up to 47F at PIT.

Quick, somebody get the "Summer Wheeze" to put him out of his misery already.

2250? That seems rather optimistic.

Holy cow! 62F now at BTV, an astounding 13F above the 130-year-old daily record high.

This looks intense. Not seeing any warnings though. Burlington is up to 58°F, which is 9°F above the 130-year-old daily record high.

Quite mild today. Fort Wayne, Indiana reached a record of 55F, while Detroit fell 1F shy of its record, topping out at 53F. Several other locations were within a couple of degrees of daily records.

The crazy thing is since they switched all the airports at the same time, you wouldn't even notice a problem [except relative to your personal station] unless you compared to cooperative station data. If you only compare to other airports, it looks legitimate. PIT is similar to AGC in both months, and warmer than BTP and AFJ. But if you look into the data, you notice PIT/AGC went from warmest by far to middle-of-the-road. BTP and AFJ went from warmer half of the distribution to among the coldest sites.