Thursday, August 20, 2026 Weather For Mount Joy, PA

Summary

This morning when I woke up it was a bit warmer than yesterday again. The temperature was in in the upper 60s Dawn brought cloudy skies with a low in the mid to upper 60s. Early this morning there were peeks of dim sunshine. It was into the middle 70s by midmorning. It was cloudy and humid with temperatures in the upper 70s during early afternoon. It got into the lower 80s by mid-afternoon with maybe a few brief peeks of sun. Late this afternoon we had a thunderstorm with some rain and some of the heaviest rain I can remember seeing. We got nearly two inches of rain in less than an hour. Funnels cloud was videoed a few miles south of here in Columbia with apparent tornado damage.

Weather Station Data

This table contains the temperature data from my weather station in degrees Fahrenheit.
Today
TemperatureDew Point Feels Like
Average 70.6 ℉ 67.8 ℉ 71.5 ℉
High 82.4 ℉ at 75.8 ℉ at 89.8 ℉ at
Low 63.5 ℉ at 62.3 ℉ at 63.5 ℉ at
Range18.9 ℉ 13.5 ℉26.3 ℉
Yesterday
TemperatureDew Point Feels Like
Average74.8 ℉ 66.9 ℉ 76.4 ℉
High86.4 ℉ at 70.6 ℉ at 90.8 ℉ at
Low63.1 ℉ at 61.9 ℉ at 63.1 ℉ at
Range23.3 ℉ 8.7 ℉27.7 ℉
Difference
TemperatureDew Point Feels Like
Average4.2℉ cooler0.9℉ warmer 4.9℉ cooler
High4.0℉ cooler 5.2℉ warmer 1.0℉ cooler
Low0.4℉ warmer 0.4℉ warmer 0.4℉ warmer

There were 8.0 cooling degree days today.

There were 10.0 cooling degree days yesterday.

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This table contains the relative humidity data from my weather station.
AverageHighLow Range
91.0%99.0% at 77.0% at 22.0%
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This table contains the relative barometric pressure data from my weather station in Inches of mercury.
PressureTime
Average30.04″
High30.13″
Low29.89″
Range0.24″
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This table contains the solar data from my weather station
UV Radiation MaxSolar Radiation Max
4 at 455.1 W/m² at
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This table sunrise and sunset information for the day.
TodayDifference From Yesterday
Sunrise at 101.88° and 0.3° south of yesterday's sunset.
Sunset at 101.96° and 0.3° south of yesterday's sunset.
Solar Noon at 62.16° and 0.33° lower than yesterday.
Sunlight Duration
about data sources
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This table contains the wind data from my weather station in miles per hour.
Wind SpeedGustTime
Average Wind0.8 mph8.9 mph
High2.4 mph17.4 mph
DirectionE
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This table contains the rainfall data from my weather station in inches.
Daily Rain Max HourlyEvent RainYesterday's RainWeekly RainMonthly RainYearly Rain
1.8″5.15″ per hour1.8″ 0″3.28″6.47″30.34″
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This table contains the lightning data from my weather station.
MaxTime
Strikes Per Hour283
Strikes Per Day292
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