ChescoWx
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Some rainfall amounts so far today across Chester County PA. East Nantmeal 1.17" / Marsh Creek 1.02" / Downingtown 1.38" / Elverson 0.72". Today will not be a wash out but there could still be some showers almost anytime. Rain chances increase again later today and tonight. Showers could linger until later on Monday. The one consistent will be the very chilly autumnal temperatures. We should stay in the 50's for high temperatures and lows in the 40's till Wednesday. We will warm to near normal by Thursday before more unseasonably chilly air arrives by Friday. The record high for today is 93 degrees set way back in 1897. The record low is 29 degrees from 1947. The daily rainfall record is the 2.51" that fell today in 2010.
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September will end as the 4th month over the first 9 months with below normal temperatures here in Chester County PA. As you can see below the trend in Chester County has been for cooler Septembers than we used to experience. No doubt this will not be reflected in the weather data you will see on TV posted from the urban heat island that is the Philadelphia International Airport.
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An extended period of unseasonably chilly and wet weather looks likely across Chester County from later today through Tuesday. Rainfall amounts could be as high as 2" to 3" in spots with temps remaining in the chilly 50's by day and 40's at night till next Wednesday. Our record high for today is 88 degrees set back in 1986. The record low is 33 degrees set in 1992. The daily rainfall record is the 2.99" that fell today back in 2010.
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Most spots across Chester County saw temperatures this morning bottom out in the low to mid-40's - this is about 10 degrees below normal for late September. High's today and the rest of the week will stay in the low to mid 60's this is about 8 degrees below our normal highs. It looks likely we will finish September with below normal temperatures. This would be our 4th below normal month in the first 9 months of 2022. Our last below normal month was in June. Our record high for today is 87 degrees set in 1921. This is the first day since April 30th that the record high temperature is not over 90 degrees here in the County. The record low temp for today is the 30 degrees set back in 1947. Our daily rainfall record is the 2.97" that fell today back in 2004.
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Our dry and below normal temperatures should continue for the rest of the work week. Still keeping an eye on Hurricane Ian that could bring some showers across Chester County over the weekend. The record high for today is 92 degrees set way back in 1900. Our record low temp is 30 degrees from 1947. Daily rainfall record is 4.02" from 1985 - that rain was the result of Hurricane Gloria which over the 2 days ending today resulted in 5.59" of rain here in Chester County.
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Today will be our last chance to touch our normal high temperature for the upcoming week. Normal high today is 71 degrees. For the rest of the week we should see sunny skies and temps falling from highs in the upper 60's tomorrow to the low to mid 60's by Thursday and Friday. We will have to keep an eye on Hurricane Ian coming up from the gulf and possibly impacting us with some showers by next weekend. The record high for today is 93.5 degrees set in 1895. The record low reading was the 30 degrees set back in 1922. The daily rainfall record is 2.28" set today in 1902.
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Today should be the warmest day of the week with temps in the low 70's but there will be a few showers around later this morning and a better chance of stronger storms and possibly some thunder in the 2pm to 4pm time frame across Chester County. Much cooler air again arrives by Tuesday with below normal temperatures for the rest of the week. Our record high today is 93 degrees from 1970. The record low was 34 degrees from 1983. The daily rainfall record is 3.00" set back in 1940.
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We did make it down to 48.7 degrees here this AM - temps today will likely stay in the 50's across some of the higher spots across Chester County PA today. With the exception of Sunday and Monday the next 7 days taking us through the end of September look to average below normal temperature wise. In fact I think we have a good chance to end September with our 1st below normal month since June. This would be our 4th month so far in 2022 of the 9 months that has averaged cooler than normal. Our record high for today is 97 degrees set way back in 1895. The record low is 31 degrees from 1904. The daily rainfall record is the 1.81" that fell today in 1975.
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A strong cold front will move across Chester County from west to east. Rain should start by 11am and be through the area by 1pm. Temps will fall back from a high this morning around 70 back through the 60's with 40's by tomorrow AM. Total rainfall should be under 0.25" The record high today is 99 degrees set way back in 1895. Our record low is 31 degrees in 1904. Daily rainfall record is 1.81" in 1975.
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Plenty of low to mid-50's for low temperatures this AM across Chester County but only made it down to 56.0 here in East Nantmeal. Today could be the last 80 degree day for much of The County before we turn cooler starting tomorrow. The cold front looks to cross the County tomorrow morning with a good shot of some showers and maybe a thunderstorm. The record high today is 100 degrees from way back in 1895. This was the latest 100 degree reading in county history. Of note we have not had a 100 degree day in over 20 years (8/2/2002) and before that was 7/15/1988. Those are the only 2 days over 100 in over 56 years going back to 1966. The record low today is 30 degrees from 1956. Our daily rainfall record is the 4.30" that fell today in 1979.
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We did pick up a little rain yesterday across mainly the NW spots in Chester County with .05" falling in East Nantmeal. Today will be a little cooler than yesterday with a bit lower humidity and a stronger breeze out of the northwest. We have a one day warm up tomorrow that may for many here in the county our last chance to touch 80 degrees till next spring. A strong cold front with some possible thunderstorm chances will swing through Wednesday into Thursday morning. This will send temps to well below late September norms. I suspect some relatively higher spots may not get our of the chilly 50's on Friday. The record high for today is 93 degrees set way back in 1895. The record low is also the earliest freezing temperature ever recorded in the County with records back to 1888 - 32 degrees today back in 1956. This also resulted in the shortest growing (freeze free) season in county history at just 119 days. We average 189 days in the higher elevations and 172 days in valley locations. The record rainfall for today is the 2.48" that fell in 1938.
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Today looks to be the warmest day of the week across Chester County with temps warming into the low 80's. There is a chance of some showers especially across NW Chesco and Berks Counties. A little cooler tomorrow and then near 80 again on Wednesday. Looking at some longer range models that may be the last day we top 80 degrees this year in the County. Much chillier air more typical of mid-October arrives by Thursday. Temperatures on Friday will struggle to get into the low 60's with low to mid 40's for lows by Saturday morning. The record high for today is 92 degrees set in 1983. The record low is 36 degrees set in 1943. The daily rainfall record is the 3.27" that fell way back in 1894.
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The next few days will continue to average above average temperature wise before a sharp cold front and switch to autumnal chilly weather arrives by Thursday. We should see high temps remaining in the low to mid-60's by Friday. Those kind of temperatures are typical for mid-October than late September. The record Chester County high for today is 93 degrees set way back in 1898. Our record low reading was the 35 degrees set in 1990. The daily rainfall record is 3.90" from 1945.
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Our warming trend gets well under way today as we rise to the above normal upper 70's to near 80 across much of the County. Above normal temps should continue through Thursday before much cooler air again arrives on Friday with highs on Friday again failing to escape the 60's in many locations. Our record high today is 93 degrees set back in 1915. The record low is 36 degrees set back in 1959. The daily rainfall record is the 3.01" that fell in 1995.
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If GFS is to be believed....some 30's within next 2 weeks as we close out September
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This morning's low of 48.6 was our coldest reading since the 47.8 back on May 11th. A near normal day today across the County before a warming trend kicks in starting over the weekend and lasting through most of next week. We should see temps rise to well above normal with highs in the low to mid 80's for most of next week. That is a good 8 to 10 degrees above normal. There is a slight chance of showers on Monday but otherwise dry through the period. The record high for today is 91 degrees set in 1991. Our record low is 36 degrees in 1913. The record rain was the 7.85" at Coatesville from 1999. That rain was the result of Hurricane Floyd and is the greatest 1 day rain total since "official" record keeping began back in 1888 for Chester County PA. I was actually in Thorndale PA for that storm and we received 8.38" of rain.
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Today we may struggle to get out of the upper 60's across some of the higher terrain in Chester County. Lows tonight could see the 40's especially in the lower spots and valleys. This would be the first reading in the 40's since our low of 49.5 on June 20th. Our record high for today is 93 degrees from 1927. The record low is 35 degrees from 1895. The daily rainfall mark is the 1.85" that fell back in 1904.
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Our record high for today here in Chester County PA is 92 degrees set back in 1915. The record low for today is 36 degrees from 1975. The daily rainfall record is the 3.53" that fell in 1966.
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Many sections of Chester County PA are now well above normal regarding both monthly and YTD rainfall. With the passage of the cold front last night we are beginning a stretch of almost perfect late summer weather. Wall to wall sunshine every day with temperatures averaging near to a little below normal over the next 5 days before temps rise to a bit above normal by Sunday. Many of the lower spots in the county may actually see their 1st reading in the 40's by Friday morning! Our record high for today is 96 degrees set in 1952. The record low is 37 degrees set in 1953. The daily rainfall record is 2.33" set back in 1930.
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My Tempest is down for the 3rd time down the shore since it's install last December! They are sending me another replacement #4 - really disappointing and way too many $$ spent as each time I need to install on the roof it is a $150 charge as you need a 40ft plus ladder to get to the roof and I don't have one. -
We have picked up 1.78" of rain so far since yesterday. We should see some additional showers developing across Chester County by this afternoon. The record high for today is 97 degrees set back in 1931. Our record low is 38 degrees set in 1917. On this date back in 1960 we received a record 2.37" of rain which followed the 3.35" that was recorded on the 11th - that rain was all from Hurricane Donna. The 2 day total rain was 5.72"
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Now up to 1.74" of rain so far today. Picked up 0.97" just in the last 45 minutes here in East Nantmeal with the heavy storm that passed over NW Chester County.
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Some off and on showers today with temps remaining in the 60's across most of Chester County today. We have already received 0.39" of rain here in East Nantmeal Township and some areas may pick up around an inch of rain before we start to dry out tomorrow night. Our record high today is 99 degrees set way back in 1897. The record low is 34 degrees set in 1924. The daily rainfall record is the 3.35" that fell today in 1960.
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Our morning low here in East Nantmeal was 56.6 degrees this is about 3 degrees below average. Yesterday was our 3rd straight below average temperature day here in Chester County. Today looks to be again just a little below normal but with sunny skies. Clouds will be on the increase tonight with showers likely by tomorrow afternoon, Looks like shower chances will continue till Tuesday morning. Our record high today is the 99 degrees set back in 1897. The record low is 38 degrees from 1975. The daily rain record occurred back in 2015 when 1.75" of rain was recorded.
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An almost perfect Friday across the County. The weekend starts out nice but showers chances increase by Sunday PM. The start of next week looks like some showers are likely before we clear out again by Tuesday PM. Longer term temps looks to average above normal through most of the month of September before a turn to cooler by the final week of September. Our record high for today is 94 degrees set back in 1959. The record low is 38 degrees from 1984. The daily rainfall record is the 2.15" that fell today in 1902.