Monthly weather forecast and climate
Harrisburg, PA

A church, a mosque, and other buildings along State Street in Harrisburg, Pennsylvania
A church, a mosque, and other buildings along State Street in Harrisburg, Pennsylvania

What is the coldest month in Harrisburg?

January is the coldest month, with an average high-temperature of 37°F (2.8°C) and an average low-temperature of 22.8°F (-5.1°C).

How many days does it rain in Harrisburg?

In Harrisburg, during the entire year, the rain falls for 122 days and collects up to 40.7" (1034.8mm) of precipitation.

When does it snow in Harrisburg?

Months with snowfall are January through April, November and December.

How many days does it snow in Harrisburg?

In Harrisburg, Pennsylvania, during the entire year, snow falls for 16.8 days, and aggregates up to 30.6" (777.2mm) of snow.

What is the month with the lowest UV index in Harrisburg?

Months with the lowest UV index in Harrisburg are January, November and December, with an average UV index of 2.

What is the driest month in Harrisburg?

February is the month with the least rainfall. Rain falls for 9.9 days and accumulates 2.4" (60.7mm) of precipitation.

What is the snowiest month in Harrisburg?

The month with the most snowfall is February when snow falls for 5 days and typically aggregates up to 10.5" (266.7mm) of snow.

What is the least humid month in Harrisburg?

April is the least humid month in Harrisburg, with an average relative humidity of 59.2%.

What is the month with the highest UV index in Harrisburg?

June and July, with an average UV index of 9, are months with the highest UV index in Harrisburg.

What is the warmest month in Harrisburg?

With an average high-temperature of 85.5°F (29.7°C) and an average low-temperature of 66.4°F (19.1°C), July is the warmest month.

What is the rainiest month in Harrisburg?

July is the month with the most rainfall in Harrisburg, Pennsylvania. Rain falls for 10.7 days and accumulates 4.6" (117.1mm) of precipitation.

What is the most humid month in Harrisburg?

With an average relative humidity of 73.8%, September is the most humid month.
Average temperature - Harrisburg, PA
Average humidity - Harrisburg, PA

The month with the highest relative humidity is September (73.8%).
The month with the lowest relative humidity is April (59.2%).

Average rainfall - Harrisburg, PA
Average rainfall days - Harrisburg, PA

The month with the highest number of rainy days is May (12.2 days).
The month with the lowest number of rainy days is October (8.8 days).

Average snowfall - Harrisburg, PA
Average snowfall days - Harrisburg, PA

The month with the highest number of snowfall days is January (5.2 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average daylight / Average sunshine - Harrisburg, PA
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