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Pattern December to Remember

After looking through 144 years of December data, there hasn't been a single December where KATL didn't get below freezing. So that looks to be broken this month. Here are some of the warmer Decembers I found.

2015: 57.6F
1889: 57.2F
1956: 54.3F
1984: 53.7F
1971: 52.3F

2021: 54.4
 
Sensible weather on Christmas Day still up in the air for NC-SC piedmont + NE GA and pts north. Ensemble mean verbatim is warm, but CAD could very easily show up in the next few days during this time frame

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J.C. said:
After looking through 144 years of December data, there hasn't been a single December where KATL didn't get below freezing. So that looks to be broken this month. Here are some of the warmer Decembers I found.

2015: 57.6F
1889: 57.2F
1956: 54.3F
1984: 53.7F
1971: 52.3F

2021: 54.4
Click to expand...
That 1889 reading is very high considering that the other temps are partly if not greatly influenced by the UHI effect. I wonder where they took the weather readings in 1889?

I hit 32 this morning. Probably have been below freezing three times this month. We need to move the weather station away from the international airport.
 
weatherfide said:
That 1889 reading is very high considering that the other temps are partly if not greatly influenced by the UHI effect. I wonder where they took the weather readings in 1889?

I hit 32 this morning. Probably have been below freezing three times this month. We need to move the weather station away from the international airport.
Click to expand...
We have a fancy weather station about 1hr north. It’s called TWC. Seems like a got spot to me. ?‍♂️.
 
Pretty good model agreement so far between the 12z GFS and Euro, however the 12z Euro is colder with the CAD vs. the GFS. It's looking like it's going to be another good Euro run, fingers crossed!
 
weatherfide said:
That 1889 reading is very high considering that the other temps are partly if not greatly influenced by the UHI effect. I wonder where they took the weather readings in 1889?

I hit 32 this morning. Probably have been below freezing three times this month. We need to move the weather station away from the international airport.
Click to expand...

Quite honestly, DeKalb Peachtree airport is in just as much of an urban environment, and they have completely different low outputs. Five runways, soon to be six, doesn't seem very conducive to accurate night time low temperatures to me. Here is the data to compare so far this month. For reference:

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PDK
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KATL
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So PDK is only 17 miles NE as the crow flies, 50' higher in elevation, and yet so far this month the are almost a full degree colder for the average high, and a whopping 4 degrees colder for the average low. Anyone who believes that is lined up to buy oceanfront property in Kansas. It needs to be addressed.
 

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weatherfide said:
That 1889 reading is very high considering that the other temps are partly if not greatly influenced by the UHI effect. I wonder where they took the weather readings in 1889?

I hit 32 this morning. Probably have been below freezing three times this month. We need to move the weather station away from the international airport.
Click to expand...
I live less than 30 miles from ATL. We have been in the 20's twice and at 32 or below at least 3 other times. Measuring area temps by using ATL is like keeping your thermometer in the garage and then being surprised when it is colder outside. ATL temps do not represent temps just a few mile beyond the city.
 
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