Weather For Mount Joy, PA On Monday, December 15, 2025

Summary

This morning when I woke up it was much colder than yesterday. The temperature was in the middle teens. The wind had calmed after being somewhat gusty last night. Dawn brought clear skies with a low in the middle teens. It was finally into the lower 20s by mid morning. With fading sunshine it was in the middle 20s late this morning. With the clouds it became breezy. The nearly halted the temperature rise. It just crept up after they moved in. Late this afternoon it was cloudy and in the lower 20s. It looked like it could snow. Early this evening we did have some snow move through. It looks like maybe half an inch of new snow fell.

Weather Station Data

This table contains the temperature data from my weather station in degrees Fahrenheit.
Today
TemperatureDew Point Feels Like
Average 19.5 ℉ 12.7 ℉ 15.5 ℉
High 25.7 ℉ at 18.9 ℉ at 25.3 ℉ at
Low 13.6 ℉ at 7.5 ℉ at 2.1 ℉ at
Range12.1 ℉ 11.4 ℉23.2 ℉
Yesterday
TemperatureDew Point Feels Like
Average24 ℉17.7 ℉20.3 ℉
High32.2 ℉ at 32 ℉ at 32.2 ℉ at
Low17.1 ℉ at 5.1 ℉ at 2.1 ℉ at
Range15.1 ℉ 26.9 ℉30.1 ℉
Difference
TemperatureDew Point Feels Like
Average4.5 ℉ cooler5 ℉ cooler 4.8 ℉ cooler
High6.5 ℉ cooler 13.1 ℉ cooler 6.9 ℉ cooler
Low3.5 ℉ cooler 2.4℉ warmer 0 was the same

There were 45.4 heating degree days today

There were 40 heating degree days yesterday

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This table contains the relative humidity data from my weather station.
AverageHighLow Range
74%94% at 65% at 29%
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This table contains the relative barometric pressure data from my weather station in Inches of mercury.
PressureTime
Average30.37″
High30.46″
Low30.27″
Range0.19″
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This table contains the solar data from my weather station
UV Radiation MaxSolar Radiation Max
2 at 221.4 W/m² at
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This table sunrise and sunset information for the day.
TodayDifference From Yesterday
Sunrise at 70.1° and 0.06° south of yesterday's sunset.
Sunset at 69.92° and 0.06° south of yesterday's sunset.
Solar Noon at 26.59° and 0.05° 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 Wind4.5 mph29.1 mph
High12.7 mph31.5 mph
DirectionW
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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
0″0″ per hour0″ 0″0″287.68″320.78″
The last measurable rain was days ago on and when 0.03″ rain fell. The Storm Total was 0.03″.
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This table contains the lightning data from my weather station.
MaxTime
Strikes Per Hour0
Strikes Per Day0
The last lightning strike detected was days ago on .
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