Zip 17020 (Duncannon, PA) Climate

The climate in 17020 Duncannon, PA is generally mild, with average temperatures ranging from the mid-30s in winter to the high-70s in summer. Precipitation levels are slightly above average for the region, usually accounting for about 41 inches of rainfall per year. Snowfall is relatively light, typically amounting to around 21 inches during the coldest months of December through February. The area experiences a good amount of sunshine throughout the year - on average about 213 days - with strong seasonal variations. Summertime often brings hot and humid days that can be oppressive if temperatures reach their peak.

Duncannon (zip 17020), Pennsylvania gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Duncannon (zip 17020) averages 30 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 196 sunny days per year in Duncannon (zip 17020). The US average is 205 sunny days.

Duncannon (zip 17020) gets some kind of precipitation, on average, 122 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.

Weather Highlights

Summer High: the July high is around 84 degrees
Winter Low: the January low is 21
Rain: averages 44 inches of rain a year
Snow: averages 30 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 17020 zip code is 7.1 (10=best), which means it is more comfortable than most places in Pennsylvania.

8.8 Summer - 5.2 Winter

June, September and August are the most pleasant months in the 17020 zip code, while January and February are the least comfortable months.

Climate	Duncannon, Pennsylvania	United States
	Unlock	38.1 in.
	30.2 in.	Unlock
	Unlock	106.2 days
	196 days	Unlock
	84.0°	85.8°
	Unlock	21.7°
	7.1	Unlock
	Unlock	4.3
	467 ft.	Unlock

Climate

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.

July is the hottest month for the 17020 zip code with an average high temperature of 84.0°, which ranks it as warmer than most places in Pennsylvania. In the 17020 zip code, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 17020 zip code are June, September and August.

In the 17020 zip code, there are 11.5 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.

January has the coldest nighttime temperatures for the 17020 zip code with an average of 20.5°. This is warmer than most places in Pennsylvania.

In the 17020 zip code, there are 119.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.

In the 17020 zip code, there are 1.1 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.

The humidity is usually comfortable in the 17020 zip code but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. The most humid months are July, August and June.

June is the wettest month in the 17020 zip code with 4.3 inches of rain, and the driest month is January with 2.9 inches. The wettest season is Autumn with 28% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 43.9 inches in the 17020 zip code means that it is about average compared to other places in Pennsylvania.

May is the rainiest month in the 17020 zip code with 12.8 days of rain, and September is the driest month with only 8.7 rainy days. There are 122.1 rainy days annually in the 17020 zip code, which is less rainy than most places in Pennsylvania. The rainiest season is Summer when it rains 28% of the time and the driest is Spring with only a 23% chance of a rainy day.

An annual snowfall of 30.2 inches in the 17020 zip code means that it is about average compared to other places in Pennsylvania. January is the snowiest month in the 17020 zip code with 9.8 inches of snow, and 6 months of the year have significant snowfall.

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