Climate in Zip 18643 (Exeter, PA)

18643 Exeter, PA typically experiences a humid continental climate with cool winters and hot summers. In the winter months, temperatures range from low single digits to mid-forties Fahrenheit, while in the summer months they can reach into the eighties and nineties. Precipitation is common throughout the year with snowfall in the colder months and rain showers in the warmer months. There is some unpredictability to the weather due to its proximity to both Lake Erie and Lake Ontario, which can bring more severe weather depending on how active these bodies of water become.

Exeter (zip 18643), Pennsylvania gets 41 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Exeter (zip 18643) averages 38 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 176 sunny days per year in Exeter (zip 18643). The US average is 205 sunny days.

Exeter (zip 18643) gets some kind of precipitation, on average, 129 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

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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 38 inches of snow a year

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BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the 18643 zip code is 6.9 (10=best), which means it is about average compared to other places in Pennsylvania.

August, July and June are the most pleasant months in the 18643 zip code, while January and February are the least comfortable months.

July is the hottest month for the 18643 zip code with an average high temperature of 81.9°, which ranks it as cooler than most places in Pennsylvania. In the 18643 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 18643 zip code are June, August and July.

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In the 18643 zip code, there are 6.7 days annually when the high temperature is over 90°, which is cooler than most places in Pennsylvania.

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January has the coldest nighttime temperatures for the 18643 zip code with an average of 16.5°. This is colder than most places in Pennsylvania.

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In the 18643 zip code, there are 135.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Pennsylvania.

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In the 18643 zip code, there are 3.9 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Pennsylvania.

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Humidity in the 18643 zip code is generally low and comfortable. But there some days when the humidity becomes unpleasant, especially in July and August. The most humid months (but still comfortable) are July, August and June.

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September is the wettest month in the 18643 zip code with 4.2 inches of rain, and the driest month is February with 2.2 inches. The wettest season is Autumn with 30% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 41.2 inches in the 18643 zip code means that it is drier than most places in Pennsylvania.

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May is the rainiest month in the 18643 zip code with 12.3 days of rain, and February is the driest month with only 9.5 rainy days. There are 129.2 rainy days annually in the 18643 zip code, which is about average compared to other places in Pennsylvania. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 23% chance of a rainy day.

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An annual snowfall of 37.8 inches in the 18643 zip code means that it is snowier than most places in Pennsylvania. January is the snowiest month in the 18643 zip code with 12.8 inches of snow, and 6 months of the year have significant snowfall.

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