chescowxman

After yesterday's chilly day today will be another day with high temps running near 7 degrees below normal with readings in the upper 50's. We get back to near normal temps tomorrow before dropping back to the mid 50's on Sunday. We should see normal to below temps for much of the next 10 days or so. Some shower chances tonight and again by Tuesday night into Wednesday. Chester County records for today: High 93 degrees in West Chester (1976) / Low 24 degrees at Coatesville (1904) / Rain 2.05" Coatesville (1943) / Snow 5.5" in Coatesville (1983)

Another sunny day but much cooler than yesterday across the area with temps mainly in the 60's to near 70 (still almost 7 degrees above normal for today). Rain chances ramp up by tomorrow PM and will last till Thursday AM. Another chance of showers on Friday night before we slip back to below normal temperatures for the upcoming weekend. Chester County records for today: High 90 degrees Phoenixville (2002) / Low 20 degrees in Coatesville (1926) / Rain 5.45" Chadds Ford (1983) / Snow 2.5" at Coatesville (1923)

Some great weather over the next few days although with the winds today might be a bit tough on some allergy sufferers. Looks like shower chances return by Wednesday and could last through the rest of the week! Our wet year continues! Chester County Records for today: High 91 degrees Phoenixville (1941) / Low 21 degrees West Chester (1940) / Rain 2.28" Coatesville (1970) / Snow 2.5" Coatesville (1923)

0.24" of rain so far since yesterday here in East Nantmeal. Might see another 0.25" or more if any thunderstorms pop up. Shower chances finally go away by Saturday PM and after a chilly Saturday we should see a nice warming trend get underway by Sunday and carry us into next week. Chester County records for today: High 90 degrees Devault (1977) / Low 18 degrees Phoenixville (1921) / Rain 2.29" Kennett Square (1913) / Snow 3.0" Devault (1959)

Clouds and showers to close out the work week with the heaviest rain likely overnight tonight. Sun returns and cooler on Saturday before a nice warm up with temps into the mid 70's for the county next week. Longer term a return to below normal temps looks increasingly likely as we move into next weekend and toward the end of the month. County records for today: High 89 West Chester (2013) / Low 20 Phoenixville (1921) / Rain 2.06" West Grove (1929) / Snow 18.5" Coatesville (1894)

Mild again today but we look cloudy with increasing shower chances for the rest of the work week before we clear out for the weekend. Some models paint another 1" to 2" of rain by late Friday. Chester County records for today: High 88.9 at Nottingham (2013) / Low 15 Devault (1958) / Rain 2.05: Coatesville (1993) / Snow 9.7" (1894). Of note this snow was the start of a 2 day snowstorm that was the largest snowstorm in April history with 29" of snow falling at Coatesville.. The NWS PHL historical weather page details this April storm as follows.1894...(April 10-12) Md-DC-DE-PA-NJ-NY. Whirling snowstorm and gale winds,remarkable so late in Spring. Most severe for many years in MD, DE and DC with snow 20 to 24" deep; 12 to 31" in PA; 5 to 21" in NJ; and 6 to 30" in NY. Roads blocked."

Today could be our warmest day so far this year - our warmest reading so far was the 74.1 back on March 14th. After today the weather looks a bit unsettled with shower chances through Friday (we could see near another inch or rain in some spots) with the greatest likelihood coming on Thursday. Sun returns this weekend! Chester County records for today: High 89 degrees Phoenixville (1959) / Low 20 degrees Devault (1977) / Rain 2.32" Kennett Square (1906) / Snow 6.0" West Chester (1917)

Another below normal temperature day...but at least dry across the area. Some areas by early Monday morning could see some readings near the freezing mark. A strong warming trend finally sets in on Monday with the warmest day looking like Tuesday before more showers and rain arrive on Wednesday and last through much of the rest of the work week. Chester County records for today: High temp 90 degrees Phoenixville (2010) / Low 15 Coatesville (1982) / Rain 2.03" Coatesville (1971) / Snow 4.0" Devault 4.0" (1971)

Today will be our 15th below normal temperature day over the last 20 days with high temps again struggling to escape the 40's. Our below normal stretch should continue through the weekend before a nice warmup next week. Chester County Records for today: High 85.3 degrees Longwood Gardens (2010) / Low 21 degrees Coatesville (1995) / Rain 2.45" Chadds Ford (1984) / Snow 3.0" Coatesville (1898)

With the 0.11" that fell here in East Nantmeal since midnight we are now up to 4.01" of rain since the month began on Monday. Some other area totals so far: Atglen 3.71" / Chester Springs 4.05" / Devault 3.76"/ Glenmoore 4.10" / Kennett Square 4.66" / Longwood Gardens 4.11" / West Bradford 4.67" / Nottingham 3.61"/ West Chester 4.51" / West Grove 3.69" / Warwick Twp. 3.99". Should finally see some sun today and tomorrow but still a chance of some showers and maybe some thunder w/ hail mixed in especially later this PM. Our below normal temps look to continue through the weekend before we finally see some milder weather by next week.

The rain just keeps on keeping on! Rain totals across Chester County over the first 3 days of the month of April: East Nantmeal 2.68" / Atglen 2.63" / Chester Springs 2.45" / Glenmoore 2.63" / Nottingham 2.39" / Warwick Township 2.57" / Devault 2.27" / Kennett Square 2.85" / Longwood Gardens 2.49" / West Chester 2.91" / West Grove 2.47" / Marshallton 2.90"

Here in Chester County PA this March was the 19th warmest average temp on record. . Four of the top 5 warmest March months were all before 1950 in rank order 51.7 (1945) / 51.4 (1921) / 50.0 (2012) / 49.1 (1946) / 48.1 (1903). Of note look how the National Center of Environmental Information (NCEI) chilled the average temperatures pre-1950 with post hoc cooling adjustments to mute the warmth we saw in those decades. 1945 Actual 51.7 - adjusted 49.6 / 1921 Actual 51.4 - adjusted 49.7 / 1946 actual 49.1 - adjusted 47.3 and 1903 actual 48.1 after adjustment 46.8. Interestingly not one available individual reporting station reported a number as low as these post hoc averages in any of these months.

1.33" of rain so far since yesterday here in East Nantmeal with 0.73" falling since midnight. Our wet and chilly start to April continues through Thursday. Records for today across the county: High 86 degrees Coatesville (1967) / Low 16 degrees Phoenixville (1964) / Rain 3.48" Phoenixville (2005) / Snow 5.0" Devault (1965)

10 of the last 12 days have featured below normal temperatures....today and tomorrow will be close to normal before more below normal weather arrives to begin the month of April. After some sun today and shower chances this evening it should be a beautiful Easter Day tomorrow before a very rainy week sets in starting Monday till Thursday AM. We could see almost 3 inches of rain across parts of the area. Records for today: High temp 88 Coatesville (1998) / Low 12 Phoenixville (1921) 1.93" West Chester (2001) / Snow 4.5" West Grove (1942)

Cloudy day with showers arriving shortly. Chilly with temps remaining in the 40's in most locales. Steadier rain by later today and through tomorrow morning. For those who celebrate Opening Day of the baseball season (should be a national holiday IMHO) the Phightin Phillies game may be in a bit of trouble....Friday looks much better but breezy and chilly, Record High 85 degrees in Coatesville (1921) / Low 16 West Chester (2001) / Rain 2.54" Chadds Ford (1978) / Snow 2.0" Devault (1959)

Some lower spots in the county again fell to below freezing this morning - while higher spots like here in East Nantmeal remained just above freezing. We should now stay above freezing for at least the next week. Not much sun today through Thursday with rain chances ramping up by late tomorrow PM. County records for today: High 84 Coatesville (1921) / Low 11 Devault (1960) / Rain 2.03" Coatesville (1978) / Snow 4.0" Honey Brook (2013)

Widespread below freezing temps again this morning. We should see another day of below normal temps with highs struggling to escape the 40's to near 50 for most areas. Clouds will increase tonight as a storm continues to spin off the coast and will begin to push a marine layer from the ocean across the area from NE to SW tonight. Tomorrow looks cloudy and chilly again. Rain chances increase by Wednesday night into the day Thursday. May cause a delay till Friday for the Phillies home opener. Records for today: High 85 degrees in Phoenixville (1939) / Low 12 above in Kennett Square and Coateville (1896) / Rain 1.63" Kennett Square (1909) / Snow 4.5" East Nantmeal (2013)

Yesterday's 2.58" at Kennett Square broke the all station daily rain record in the county. The old record was the 1.96" at Glenmoore in 1977. Today was our 7th straight day with below freezing low temps. The next couple days will be sunny but continuing our run of below normal temps. Near normal temps (low to mid 50's) should continue for much of the upcoming week. Next rain chances are Wednesday and Thursday. Chester County wide records for today: High 81 West Chester (2012) / Low also in West Chester at 12 degrees (1897) / Record rain 2.11" Chester Springs (2021) / Snow 3.5" Coatesville (1965)

Lows this AM were as cold as 19.3 in Warwick Township this AM - our coldest morning since back on February 25th. Sunny and below normal temps today before the rainstorm moves in tonight through tomorrow. The NWS has a flood watch posted for over 3 inches of rain for much of the area. Sunny and continued chilly by Sunday. County wide records for today: The earliest 90 degree reading was today in Phoenixville back in 1948 / Low 6 above at both Devault and Phoenixville in 1956 / Rain 5.23" in Chadds Ford in 2000/ Snowfall 7.0" in West Grove in 1964

We saw widespread 20's across the area this morning and temps today will struggle to reach the mid-40's. This is almost 10 degrees below normal levels for late March. Today and Friday will be sunny but a developing noreaster will move up the coast with rain starting by later Friday night and lasting through the day on Saturday. We could see almost 2 inches of rain before ending Saturday night. County wide records for today: High 88 degrees Phoenixville (1948) / Low 7 above Phoenixville (1965) / Rain 2.52" Nottingham (2019)/ Snow 13.0" Devault (1958)

Yesterday was the warmest day (65.1) in East Nantmeal since the 66.3 degree reading on November 9th. Other Chester County high temps yesterday included Atglen 65.2 / Chester Springs 66.7 / Devault 67.2 / Glenmoore 65.0 / Longwood 65.2 / Marshallton 67.8 / Warwick 67.9 and West Chester 66.7. Both today and tomorrow should be even a bit warmer but nowhere close to record levels before showers Friday and a turn to much colder weather next week. Records for today: 84 degrees at Glenmoore/Honey Brook / Chadds Ford and West Chester (1990) / Record Low 1 below zero Coatesville (1896) / Rain 3.24 Coatesville Airport KMQS (2010) / Snow 15.2" Coatesville during the Blizzard of 1993.

I have been working with the great folks at the Delaware Environmental Observing System (Thanks to Chris!!) to add even more weather observation points and stations across Chester County PA. With the updated data and summer coming I thought I would run an analysis of Summer (June-August) temperatures across the County from 1895 through last summer (now with 25 Chester County Stations at least partially in the data since 1895 and 15 current observation sites included). Overall in the non-adjusted data there is only as expected normal cyclical warm and cool cycles but I thought I would show you a comparison of the post observation adjustment applied by the the National Center of Environmental Information (NCEI) who have applied 111 consecutive years of post observation adjustments to chill the actual observations to each and every summer from 1895 through 2005 and have every year since 2005 now applied a warming adjustment. As you can see in the trend lines the orange non-adjusted and blue adjusted paint a far different rate of our rate of warming.

I still post over there some good folks remain!! Where are you now??

Hi IFred yes sir!

Along with our 0.3" of snow last evening was our first below freezing temperature since March 1st. Wind advisory remains in effect till 8pm tonight. Near normal temps today before a nice warming trend starts tomorrow. Some southern parts of Chesco could even touch 70 degrees by Thursday. Next week will be quite a bit cooler. County wide records for today: High 82 West Chester (2016) / Low 6 Phoenixville (1960) / Rain 2.60" Glenmoore (2011) / Snow 4.5" West Grove (1934)