Chester County PA - Analytical Battle of Actual vs. Altered Climate Data

[ChescoWx]

Below is the summer (June-July-August) temperature summary for 2026 and summer temperature history from 1871-1926. This was 33rd warmest summer but overall since 1895 there has been no statistically significant warming or cooling across both the raw and composite trend and only the NCEI adjusted averages indicate any significant summer warming.

[Mike Cycle]

Paul, I started looking at the difference between the daily nclimgrid and daily raw station data for Chester County and surrounding area for 1951 forward.  Daily data for nclimgrid starts at 1951. A sample of that analysis is attached, showing that the difference varies by station.  This is interesting.  The difference may be amenable to modeling.

Cell size for the nclimgrid is about 2 X 2 miles--the red squares are each a cell with a time series.  When looking at CAG, we are seeing an average for the county of these squares.  

Can you provide the station list for your recent analysis?

Edit.  Some of the difference may correlate with nearby forest ET, and some may correlate with site geomorphology.

[Bhs1975]

Below is the summer (June-July-August) temperature summary for 2026 and summer temperature history from 1871-1926. This was 33rd warmest summer but overall since 1895 there has been no statistically significant warming or cooling across both the raw and composite trend and only the NCEI adjusted averages indicate any significant summer warming.

Looks like we should all move to Chester County to escape the inferno.


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[ChescoWx]

21 hours ago, Bhs1975 said:

Looks like we should all move to Chester County to escape the inferno.


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And also to avoid the burning oceans correct?? LOL!!! Oh the humanity!!!!

[ChescoWx]

On 9/1/2026 at 4:35 PM, Mike Cycle said:

Paul, I started looking at the difference between the daily nclimgrid and daily raw station data for Chester County and surrounding area for 1951 forward.  Daily data for nclimgrid starts at 1951. A sample of that analysis is attached, showing that the difference varies by station.  This is interesting.  The difference may be amenable to modeling.

Cell size for the nclimgrid is about 2 X 2 miles--the red squares are each a cell with a time series.  When looking at CAG, we are seeing an average for the county of these squares.  

Can you provide the station list for your recent analysis?

Edit.  Some of the difference may correlate with nearby forest ET, and some may correlate with site geomorphology.

Hi Mike, as luck would have it I just soft launched my updated website we now have all sorts of interactive opportunities etc. along with all of the source data. Check it out at www.chescowx.com    let me know if you need any other data or if you have suggestions or adds as I am building more utility through the site. Thanks!