ChescoWx

I went to a business persons special during that magical summer of 1993 against the Cardinals....I was dripping the entire game! I have no idea how folks are sitting through this game at CBP this afternoon!!

Some folks on my FB page were asking about thermometer siting after seeing some reports of 107 in my area while I am 92.6 I posted the below along with some guidance from the NWS. Some have questioned if they should allow their thermometer to receive direct sunlight. Per the NWS "Radiation Shield: "Never place a thermometer in direct sunlight" unless you have a louvered radiation shield and/or a fan aspiration unit (see my station photo below) My station does receive direct sunlight but I have both the shield and fan aspiration to ensure my reported temps are not sun inflated. Per the NWS "Use a slotted "beehive" or louvered radiation shield that blocks direct and reflected sunlight while allowing air to flow freely.Surrounding Terrain: The thermometer should sit over natural vegetation, such as grass, rather than over patios, artificial turf, or bare dirt.Clearance from Obstructions: Place the sensor away from structures. The distance between your thermometer and any nearby trees, buildings, or fences should be at least four times the height of the obstruction (e.g., if a tree is 20 feet tall, the sensor should be 80 feet away). Artificial Heat Sources: Keep the sensor at least 100 feet away from paved driveways, parking lots, and large concrete surfaces. Additionally, ensure it is far from artificial heat exhausts, such as furnace vents, chimneys, and air conditioning."

Some folks on my FB page were asking about thermometer siting after seeing some reports of 107 in my area while I am 92.6 I posted the below along with some guidance from the NWS. Some have questioned if they should allow their thermometer to receive direct sunlight. Per the NWS "Radiation Shield: "Never place a thermometer in direct sunlight" unless you have a louvered radiation shield and/or a fan aspiration unit (see my station photo below) My station does receive direct sunlight but I have both the shield and fan aspiration to ensure my reported temps are not sun inflated. Per the NWS "Use a slotted "beehive" or louvered radiation shield that blocks direct and reflected sunlight while allowing air to flow freely.Surrounding Terrain: The thermometer should sit over natural vegetation, such as grass, rather than over patios, artificial turf, or bare dirt.Clearance from Obstructions: Place the sensor away from structures. The distance between your thermometer and any nearby trees, buildings, or fences should be at least four times the height of the obstruction (e.g., if a tree is 20 feet tall, the sensor should be 80 feet away). Artificial Heat Sources: Keep the sensor at least 100 feet away from paved driveways, parking lots, and large concrete surfaces. Additionally, ensure it is far from artificial heat exhausts, such as furnace vents, chimneys, and air conditioning."

Today will be our hottest day with the possibility that many lower spots touch 100 degrees and could approach the record for the day of 103 degrees set way back in 1901 at Coatesville 1SW at 103 degrees. We have not set a record high in the month of July since back on July 24, 2016 when a record of 100 degrees was set at Phoenixville 1E. The heat continues through the weekend but with shower chances steadily increasing by later July 4th through the day on Monday. Temperatures will fall back to near normal by Tuesday and back to below normal temperatures by Wednesday.

Today will be our hottest day with the possibility that many lower spots touch 100 degrees and could approach the record for the day of 103 degrees set way back in 1901 at Coatesville 1SW at 103 degrees. We have not set a record high in the month of July since back on July 24, 2016 when a record of 100 degrees was set at Phoenixville 1E. The heat continues through the weekend but with shower chances steadily increasing by later July 4th through the day on Monday. Temperatures will fall back to near normal by Tuesday and back to below normal temperatures by Wednesday.

Here in East Nantmeal I recorded a high of 91.0 degrees this is only the 66th time since 2004 we have seen a 90+ day at this location. This is the first such day here since last June 25, 2025. Other area highs Atglen DEOS 92.2 / KMQS 92.1 / Glenmoore DEOS 93.6 / Nottingham DEOS 91.2 / Warwick DEOS 94.8 / Devault DEOS 94.8 / Kennett Square DEOS 94.3 / Longwood Gardens DEOS 94.6 / West Bradford DEOS 93.1 / West Chester DEOS 96.8 / West Grove DEOS 92.6

Here in East Nantmeal I recorded a high of 91.0 degrees this is only the 66th time since 2004 we have seen a 90+ day at this location. This is the first such day here since last June 25, 2025. Other area highs Atglen DEOS 92.2 / KMQS 92.1 / Glenmoore DEOS 93.6 / Nottingham DEOS 91.2 / Warwick DEOS 94.8 / Devault DEOS 94.8 / Kennett Square DEOS 94.3 / Longwood Gardens DEOS 94.6 / West Bradford DEOS 93.1 / West Chester DEOS 96.8 / West Grove DEOS 92.6

Got it! thanks!

We finished June with temperatures for the month only slightly above normal. Our extremely hot stretch of weather begins today and will continue through the weekend. The hottest days look to be both Thursday and Friday where we will be in the upper 90's on the ridges and near or above 100 degrees in the valley locales. Shower chances increase by July 4th night and continue into Sunday and Monday. This will start to trim the extremely high temperatures and by next Tuesday we will be back to near normal with highs in the mid 80's.

We finished June with temperatures for the month only slightly above normal. Our extremely hot stretch of weather begins today and will continue through the weekend. The hottest days look to be both Thursday and Friday where we will be in the upper 90's on the ridges and near or above 100 degrees in the valley locales. Shower chances increase by July 4th night and continue into Sunday and Monday. This will start to trim the extremely high temperatures and by next Tuesday we will be back to near normal with highs in the mid 80's.

Today should be our last sub 90 degree high until Monday. Mid to upper 80's today rising into the low to mid 90's tomorrow and then upper 90's in higher spots to near 100 in our valley locations both Thursday and Friday. Shower chances increase later July 4th with the days trending slightly cooler with highs by Monday in the upper 80's.

Today should be our last sub 90 degree high until Monday. Mid to upper 80's today rising into the low to mid 90's tomorrow and then upper 90's in higher spots to near 100 in our valley locations both Thursday and Friday. Shower chances increase later July 4th with the days trending slightly cooler with highs by Monday in the upper 80's.

Of course station location placement and relative elevation

With a chance that some locations could see a 100-degree day later this week I went back and analyzed 30 temperature stations across the area to see just how rare such a day has become. A 100-degree day is a rare occurrence across most spots across the County. With the potential being even more rare across the relatively higher ridge stations above 595 ft. In fact the last time any ridge location station saw a 100-degree reading was 15 years ago back on July 22, 2011. Of the 18 current stations across the area that report temperatures 9 of these have never recorded such a day. Our lowest elevation stations at Phoenixville and nearby Spring City both recorded a 100+ day last June. To illustrate how different the temperature elevation impact can be on June 26, 2025 while Spring City (256 ft ASL) was hitting the century mark....not too far away at Glenmoore DEOS (620 FT ASL) but 400 feet higher the high was 10 degrees cooler at "only" 90.6

With a chance that some locations could see a 100-degree day later this week I went back and analyzed 30 temperature stations across the area to see just how rare such a day has become. A 100-degree day is a rare occurrence across most spots across the County. With the potential being even more rare across the relatively higher ridge stations above 595 ft. In fact the last time any ridge location station saw a 100-degree reading was 15 years ago back on July 22, 2011. Of the 18 current stations across the area that report temperatures 9 of these have never recorded such a day. Our lowest elevation stations at Phoenixville and nearby Spring City both recorded a 100+ day last June. To illustrate how different the temperature elevation impact can be on June 26, 2025 while Spring City (256 ft ASL) was hitting the century mark....not too far away at Glenmoore DEOS (620 FT ASL) but 400 feet higher the high was 10 degrees cooler at "only" 90.6

With a chance that some locations could see a 100-degree day later this week I went back and analyzed 30 temperature stations across the area to see just how rare such a day has become. A 100-degree day is a rare occurrence across most spots across the County. With the potential being even more rare across the relatively higher ridge stations above 595 ft. In fact the last time any ridge location station saw a 100-degree reading was 15 years ago back on July 22, 2011. Of the 18 current stations across the area that report temperatures 9 of these have never recorded such a day. Our lowest elevation stations at Phoenixville and nearby Spring City both recorded a 100+ day last June. To illustrate how different the temperature elevation impact can be on June 26, 2025 while Spring City (256 ft ASL) was hitting the century mark....not too far away at Glenmoore DEOS (620 FT ASL) but 400 feet higher the high was 10 degrees cooler at "only" 90.6

Our extreme heat watch goes into effect starting on Wednesday. The next couple of days will be close to average for the end of June. Most spots should reach the low 90's starting on Wednesday with the peak hot days being both Thursday and Friday with highs in the upper 90's in most spots to near 100 in lower elevation valley locations. Storm chances increase a little on Independence Day and will help trim temperatures a little by the end of next weekend.

Our extreme heat watch goes into effect starting on Wednesday. The next couple of days will be close to average for the end of June. Most spots should reach the low 90's starting on Wednesday with the peak hot days being both Thursday and Friday with highs in the upper 90's in most spots to near 100 in lower elevation valley locations. Storm chances increase a little on Independence Day and will help trim temperatures a little by the end of next weekend.

You will no doubt see and hear a lot of alarmist news stories later this week saying the current heatwave is "unprecedented" across the Eastern US. However, as confirmed in a new peer reviewed study in the Journal of Theoretical and Applied Climatology, Christy (2026) “The results indicate that extremes in heat-related metrics for daily TMax in the summer have not increased and in fact often show modest declines since 1899, due mostly to the early heat events during 1925-1954” Those period of years are also the hottest period here in Chester County PA. So over the last century, there has been no evidence of an increase in heatwaves in the United Stares no matter what you will see on your TV later this week. It is simply called summer!! Stay cool!!

A really interesting statistic for the entire USA which exactly mirrors the data I share here from the philly burbs of Chester County. This below analysis measures not the typical metric of 90+ days but unusual hot periods of at least 4 days on average across the entire country where the average temperature reaches a level based on historical records that would be expected to only occur once every 10 years. Look how much hotter the entire nation was back in 1930's and 1940's compared to today! No matter how much we hear about how hot it is today we have still not reached that peak heating from the 1930 through 1942 period which matches the hottest period here in Chester County PA.

A really interesting statistic for the entire USA which exactly mirrors the data I share here from the philly burbs of Chester County. This below analysis measures not the typical metric of 90+ days but unusual hot periods of at least 4 days on average across the entire country where the average temperature reaches a level based on historical records that would be expected to only occur once every 10 years. Look how much hotter the entire nation was back in 1930's and 1940's compared to today! No matter how much we hear about how hot it is today we have still not reached that peak heating from the 1930 through 1942 period which matches the hottest period here in Chester County PA.

A really interesting statistic for the entire USA which exactly mirrors the data I share here from Chester County. This below analysis measures not the typical metric of 90+ days but unusual hot periods of at least 4 days on average across the entire country where the average temperature reaches a level based on historical records that would be expected to only occur once every 10 years. Look how much hotter the entire nation was back in 1930's and 1940's compared to today! No matter how much we hear about how hot it is today we have still not reached that peak heating from the 1930 through 1942 period which matches the hottest period here in Chester County PA.

Plenty of lows in the 50's across the area this morning with the lowest being the 50.0 at the Warwick DEOS. Today will be our 9th day in the last 10 with slightly below normal temperatures. Great weather through Thursday before rain chances increase again by Thursday night into Saturday morning. We should slowly warm up next week to above normal temperatures as we close out the month of June.

Plenty of lows in the 50's across the area this morning with the lowest being the 50.0 at the Warwick DEOS. Today will be our 9th day in the last 10 with slightly below normal temperatures. Great weather through Thursday before rain chances increase again by Thursday night into Saturday morning. We should slowly warm up next week to above normal temperatures as we close out the month of June.

1.34" in East Nantmeal since yesterday