Central PA Autumn 2026

[psuhoffman]

9 minutes ago, ChescoWx said:

 

Psst! you may not realize but those are altered adjusted temperatures not the actual temps!

Source for this claim or is this another trust me bro argument? 

[ChescoWx]

1 minute ago, Cobalt said:

If you have an issue with the data on Yellow Medicine County (Population 9,477), please care to refute it in the appropriate thread.

 

The data is now in the appropriate thread - now let the good folks here go back to their autumn obs!! thanks!

[ChescoWx]

14 minutes ago, psuhoffman said:

Source for this claim or is this another trust me bro argument? 

Go check it out under the appropriate thread - thanks again PSU!

[Itstrainingtime]

Sigh.

[canderson]

Can y’all please take this shit to the correct forum?

I’m a staunch climate change believer but even I’m like, please lord. 

[ChescoWx]

1 hour ago, canderson said:

Can y’all please take this shit to the correct forum?

I’m a staunch climate change believer but even I’m like, please lord. 

Thank you Canderson!!! You and me both let's keep these kind of posts out of this forum!! Most folks could care less about climate change or alarmism etc.!  Thanks again!!

[ChescoWx]

Happy Friday!  In the past I used to have some folks even here on Americanwx suggest my East Nantmeal Davis VP2 runs too cool (some here used to say the East Nantmeal Icebox etc.) thinking I might have a siting or equipment issue, I ran the numbers. I would welcome any pushback on the method or the results.

I used only stations that report on a midnight to midnight day, so morning and evening COOP observation times do not skew the comparison. That gives 20 Chester County Area stations: the DEOS network, KPTW, KMQS, KOQN and the Avondale 2N Climate Reference Network site.

Against Avondale USCRN, the best reference we have, over 7,198 days with data from both stations (2007 to now), my highs run 1.4 degrees cooler and my lows run 1.4 degrees warmer. The average difference is +0.01 degrees. That is the classic upland elevation based signature at 678 FT: cooler afternoons, and milder nights as cold air drains off the hill. A poorly sited station usually shows the opposite, with cold nights in a frost hollow or cool afternoons only on sunny days from shade.

Across the full network since 2012 my average is 0.68 degrees below the network mean. The USCRN site is 0.63 below, and Warwick DEOS, my nearest neighbor, is 0.56 below. Daily highs line up with elevation at about 5 degrees per 1,000 ft. Mine sit 0.7 degrees below that line, about where the other aspirated sensors (USCRN and the KPTW ASOS) also sit.

A cheap passive-shield station on a pole right next to my Davis reads highs 3 degrees warmer, and 3.3 degrees warmer on sunny days. Most backyard stations people compare against use passive shields, so an aspirated sensor will usually look cool next to them in the afternoon. 

Let me know if any questions or if you see anything that does not hold up (see detail below) as I have always strived to show the most accurate possible data for the climate here in good old Chesco!

[Itstrainingtime]

4 hours ago, psuhoffman said:

You're right, we shouldn't discuss this in here, it's the wrong place

I probably respect your thoughts, ideas and opinions on winter weather patterns more than just about anyone on the entire forum. Please consider coming back in here and sharing that. But leave this for the dedicated thread.