ChescoWx

So ClimateChanger please show us what the Elkins, West Virginia average winter temperature was from 1250 through 1750 and how much different it is? We will wait since you highlight that site with how many years of data for the climate period of 100 to 1880 AD???

Only climate alarmists like our friend rcostell and others with that shared view will look at any of these numbers with fear. What they of course represent in reality are simple minor cyclical changes. Well that is unless you apply post hoc adjustments to cool the past but that of course does not cut it. I love the fear mongering of rcostell " climate change will make us all thirstier" blah blah blah. When will any true climate impact or event ever come to pass? When all else fails as he says just ignore the outliers....because he like many of the misled believe somehow this science is settled! of course it is far far from it! I will continue to post only the factual actual climate data for the county I live in. We have more NWS/MADIS sites than ever and if this our current warming cycle some how continues without end and ever shows some sort of scary warming or cooling....these stations will no doubt show that over the coming decades. Be patient my friends!!

Sure which is why we would never simply use those or any 5 individual stations in doing this kind of county wide analysis. For the complete view and analysis see the all station review below laid over those 3 newer stations with the most warming. We start with 1983 when the newest station Coatesville 2W came on line. As we would expect since much of the last 40 years are part of the current warming cycle the all station data shows some warming albeit very slight and nothing alarming.

Great weather to start the week as long as allergies are not a problem! We should see temps well into the 70's today and 80's tomorrow. Next shot at showers looks to be around Thursday. Chester County wide records for today: High 98 degrees at West Chester (1962) / Low 32 degrees also at West Chester (2002) / Rain 4.89" at Coatesville 1SW (1894)

Great weather to start the week as long as allergies are not a problem! We should see temps well into the 70's today and 80's tomorrow. Next shot at showers looks to be around Thursday. Chester County wide records for today: High 98 degrees at West Chester (1962) / Low 32 degrees also at West Chester (2002) / Rain 4.89" at Coatesville 1SW (1894)

After another 0.09" of rain yesterday here in East Nantmeal we are way above normal rainfall for the year and almost normal so far here in May. Great news for the local farmers! Today should see the sun returning at times with temps not too far from normal in the low to mid 70's. Sun from Monday through Wednesday with temps warming into the low 80's. Shower chances by Thursday before the sun returns with temps about normal for Memorial Day weekend. Records for today across Chester County: High 96 degrees at Phoenixville (1962) of note all 9 reported weather locations on that date in 1962 had highs between 93 and 96 degrees. Record cold was 33 degrees at Kennett Square 2S (2009) / Record rain was the 4.85" that fell in West Chester (1900). All 4 reporting locations that day recorded big rain totals with Phoenixville 4.72" / Coatesville 1SW 3.46" and Kennett Square 2.75"

After another 0.09" of rain yesterday here in East Nantmeal we are way above normal rainfall for the year and almost normal so far here in May. Great news for the local farmers! Today should see the sun returning at times with temps not too far from normal in the low to mid 70's. Sun from Monday through Wednesday with temps warming into the low 80's. Shower chances by Thursday before the sun returns with temps about normal for Memorial Day weekend. Records for today across Chester County: High 96 degrees at Phoenixville (1962) of note all 9 reported weather locations on that date in 1962 had highs between 93 and 96 degrees. Record cold was 33 degrees at Kennett Square 2S (2009) / Record rain was the 4.85" that fell in West Chester (1900). All 4 reporting locations that day recorded big rain totals with Phoenixville 4.72" / Coatesville 1SW 3.46" and Kennett Square 2.75"

Today looks to be our last chilly and dreary day with temps struggling to no higher than the mid 60's. The sun returns tomorrow. Our next chance of rain after today looks to be Wednesday night. Some lower spots could approach 80 degrees on Wednesday before we fall back to near normal temps around the mid 70's toward the Memorial Day Weekend! Chester County wide records for today: High 95 degrees on this date back in 1962 at Devault 1W, Coatesville 1SW and Phoenixville/ Record low occurred just last year with a 29.4 degree temperature in Warwick Township (2023) / Rain 2.68" at Marshallton (2015)

Today looks to be our last chilly and dreary day with temps struggling to no higher than the mid 60's. The sun returns tomorrow. Our next chance of rain after today looks to be Wednesday night. Some lower spots could approach 80 degrees on Wednesday before we fall back to near normal temps around the mid 70's toward the Memorial Day Weekend! Chester County wide records for today: High 95 degrees on this date back in 1962 at Devault 1W, Coatesville 1SW and Phoenixville/ Record low occurred just last year with a 29.4 degree temperature in Warwick Township (2023) / Rain 2.68" at Marshallton (2015)

We have accounted for both the East Zone 102 with 12 of the 17 historical/current stations at the lower elevations typical of this zone. While we have 8 of the 9 stations in the West Zone 101 at the higher elevations typical of this NWS zone splits. So let's look at how the annual average temperature (raw and of course not adjusted) has run from 1893 to 2023. (blue lower / orange higher) Does anyone see a climate crisis in these annual average temperatures in Chester County PA? A mighty cyclical and relatively flat trend for sure!

Yep sure looks like a similar warming trajectory from the UHI PHL Airport vs all of those Chester County NWS COOP and MADIS sites just since 1980....which of course only includes our current warming cycle of climate change

This was already addressed the east and west is not as critical as the elevation above sea level which we have already detailed in the above post with those splits. There are of course today...consistent with the older data more stations at the relatively lower elevations. Not at the higher elevations. We will of course be analyzing data that reviews the data individually at both the relative higher and lower elevation locales to account for any variables due to these elevations.

LOL!! "quality sites" meaning those that disagree with your NWS Climate sites including both PHL and ILG Heat Island impacted stations and of course add in those after the fact chilling adjustments to the past and warming tweaks to the current data. Quite the different look from the above for Chester County if we don't make warming adjustments to the actual current data. Regarding the sites in more detail yes there was as a % more lower elevation sites in the past....which likely skewed those results too warm...even though they were in fact the warmest decades. The good news is we now have a good balance and mix that as long as we keep breaking it out by elevation will clearly show the non-adjusted factual real world warming or cooling depending on the current climate change cycle.

Our gloomy weather continues with limited sunshine over the next couple days and a good shot at some showers by tomorrow night. Sun returns Sunday and should stick around through Wednesday. Chester County records for today: High 94 degrees at Phoenixville (2017) / Low 29 degrees at Devault 1W (1956) / Rain 1.71" KMQS Airport in Coatesville (2018)

Our gloomy weather continues with limited sunshine over the next couple days and a good shot at some showers by tomorrow night. Sun returns Sunday and should stick around through Wednesday. Chester County records for today: High 94 degrees at Phoenixville (2017) / Low 29 degrees at Devault 1W (1956) / Rain 1.71" KMQS Airport in Coatesville (2018)

Nope not true at all. 27 NWS COOP stations included AWOS etc.

57.91 vs 58.1....wow!!

But of course neither KMDT or KCXY actually recorded a 58.1 degree mean temperature - MDT was 56.8 and CXY 57.9

Wow they actually warmed both KMDT and KCXY for the 17 straight years from 2001-2017 in the NOAA Climate set!!

they warmed each and every year.....correct?

Looks like the trick was indeed to clearly amplify the warming....I will run CXY also great stuff!!

You are indeed correct just like in Chester County the NCEI has in fact at least for every single year since 2000 adjusted the temperature for Harrisburg above what has been reported at MDT (see below) Do you know what if any other stations are included in the NCEI Harrisburg data?

I have not looked at MDT but I will do so and let's see how much and if they adjust after the fact

While not the sunniest of days, today and Friday should be dry and not too far from our normal high in the low 70's. We chill back down to below normal over the weekend with shower chances the highest on Saturday but dry again on Sunday. Chester County wide records for today: High 91 degrees at Phoenixville (1945) / Low 30 degrees at Coatesville 1SW (1956) / Rain 2.16" at Glenmoore (2012)

They speak in general terms of site movements, time of observation adjustments and equipment issues. The detail appears to not be applied at a station level they simply apply it to the county wide averages.