Mercer County, PA Weather


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United States / Pennsylvania / / Mercer County / Cities / Zip Codes

The most pleasant months of the year for Mercer County are June, August and July. In Mercer County, there are 4 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Mercer County with an average high temperature of 82.1°, which ranks it as cooler than most places in Pennsylvania. January is the snowiest month in Mercer County with 14.4 inches of snow, and 6 months of the year have significant snowfall. But there some days when the humidity becomes unpleasant, especially in July and August.

Today's Weather - Mercer, PA

10 AM PST

Isolated Showers And Thunderstorms

84°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
This AfternoonIsolated Showers And Thunderstorms86° / 64°NW 5 mph
SundaySunny then Slight Chance Showers And Thunderstorms89° / 67°SW 1 to 7 mph
MondayShowers And Thunderstorms Likely84° / 70°SW 7 to 10 mph
TuesdayShowers And Thunderstorms Likely88° / 68°SW 7 to 13 mph
WednesdayChance Showers And Thunderstorms79° / 60°W 8 mph
ThursdayMostly Sunny75° / 56°NW 3 to 8 mph
FridaySunny77° / 57°N 2 to 6 mph

Weather Highlights

Summer High: the July high is around 82 degrees
Winter Low: the January low is 17
Rain: averages 41 inches of rain a year
Snow: averages 52 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Mercer County area is 9.1 (10=best), which means it is more comfortable than most places in Pennsylvania.

9.1 / 10

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7.8. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.


Average Monthly High and Low (°F)
HighLow
January34° 17°
February37° 18°
March47° 25°
April60° 35°
May70° 45°
June78° 55°
July82° 59°
August81° 57°
September74° 50°
October62° 39°
November50° 32°
December38° 22°
Hot, Freezing, Rainy, Snowy Days: Mercer
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January0281510
February025137
March023135
April012142
May02130
June10120
July30110
August20100
September01110
October07130
November017142
December026157

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

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