Monday, August 17, 2026 Weather For Mount Joy, PA This morning when I woke up it was slightly cooler than yesterday again. The temperature was in in the upper 60s with light rain. Dawn brought cloudy skies with a low in the upper 60s. It didn’t take lone for the sun to start coming out with a bit of a light fog forming early this morning. It was sunny and very humid with temperatures and dew points in the middle 60s later this morning. Early this afternoon it was in the middle 80s. Late this afternoon it popped into the lower 90s.
This table contains the temperature data from my weather station in degrees Fahrenheit.
Today
Temperature Dew Point Feels Like
Average
76.2℉
72.8℉
80.9℉ High
90.5℉ at 4:43 PM
80.7℉ at 1:18 PM
107.5℉ at 3:22 PM Low
68.7℉ at 12:02 AM
68.4℉ at 12:02 AM
69.9℉ at 12:02 AM Range 21.8℉ 12.3℉ 37.6℉
Yesterday
Temperature Dew Point Feels Like
Average
70.6℉
69.6℉
71.9℉ High
75.4℉ at 9:31 AM
74.2℉ at 8:39 AM
77.1℉ at 9:31 AM
Low
67.5℉ at 1:32 PM
66.6℉ at 2:15 AM
67.5℉ at 1:32 PM
Range 7.9℉ 7.6℉ 9.6℉
Difference
Temperature Dew Point Feels Like
Average 5.6℉ warmer 3.2℉ warmer 9.0℉ warmer
High 15.1℉ warmer 6.5℉ warmer 30.4℉ warmer Low 1.2℉ warmer 1.8℉ warmer 2.4℉ warmer
There were 14.6 cooling degree days today.
There were 6.0 cooling degree days yesterday.
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This table contains the relative humidity data from my weather station.
Average High Low Range
90.0% 99.0% at 12:00 AM 68.0% at 4:42 PM 31.0%
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This table contains the relative barometric pressure data from my weather station in Inches of mercury.
Pressure Time
Average 29.92′ High 29.96′ 8:34 AM Low 29.86′ 4:17 PM Range 0.1′
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This table contains the solar data from my weather station
UV Radiation Max Solar Radiation Max 9 at 1:54 PM 943.2 W/m² at 1:54 PM
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This table sunrise and sunset information for the day.
Today Difference From Yesterday Sunrise 6:19:26 AM at 102.77° 58 seconds later than yesterday and 0.29° south of yesterday's sunset. Sunset
8:01:21 PM at 102.79°1 minute and 22 seconds earlier than yesterday and 0.29° south of yesterday's sunset.Solar Noon 1:10:02 PM at 63.14°13 seconds earlier than yesterday and 0.32° lower than yesterday.Sunlight Duration 13 hours, 41 minutes and 55 seconds 2 minutes and 20 seconds shorter than yesterday
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This table contains the wind data from my weather station in miles per hour.
Wind Speed Gust Time
Average Wind 0.8 mph 8.9 mph 5:08 PM High 2.3 mph 13.9 mph 5:02 PM Direction WSW
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This table contains the rainfall data from my weather station in inches.
Daily Rain Max Hourly Event Rain Yesterday's Rain Weekly Rain Monthly Rain Yearly Rain
0.42″ 0.54″ per hour 1.46″ 1.05″ 1.47″ 4.67″ 28.54″
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This table contains the lightning data from my weather station.
Max Time
Strikes Per Hour 1 5:31 PM Strikes Per Day 1
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