January weather forecast and climate
Harrisburg, PA

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

What is the coldest month in Harrisburg?

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

What is the temperature in January in Harrisburg?

The average high-temperature, in January, is 37°F (2.8°C), while the average low-temperature is 22.8°F (-5.1°C).

How many days does it rain in January in Harrisburg?

In Harrisburg, during January, the rain falls for 10.6 days and regularly aggregates up to 2.9" (73.2mm) of precipitation.

How much does it snow in Harrisburg in January?

In Harrisburg, Pennsylvania, in January, during 5.2 snowfall days, typically, 8.8" (223.5mm) of snow is accumulated.
Average temperature in January - Harrisburg, PA
  • Average high temperature in January: 2.8°C

The warmest month (with the highest average high temperature) is July (29.7°C).
The month with the lowest average high temperature is January (2.8°C).

  • Average low temperature in January: -5.1°C

The month with the highest average low temperature is July (19.1°C).
The coldest month (with the lowest average low temperature) is January (-5.1°C).

Average humidity in January - Harrisburg, PA
  • Average humidity in January: 64.4%

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

Average rainfall in January - Harrisburg, PA
  • Average rainfall in January: 73.2mm

The wettest month (with the highest rainfall) is July (117.1mm).
The driest month (with the lowest rainfall) is February (60.7mm).

Average rainfall days in January - Harrisburg, PA
  • Average rainfall days in January: 10.6 days

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 in January - Harrisburg, PA
  • Average snowfall in January: 223.5mm

The month with the highest snowfall is February (266.7mm).
Months with the lowest snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in January - Harrisburg, PA
  • Average snowfall days in January: 5.2 days

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 in January / Average sunshine in January - Harrisburg, PA
  • Average daylight in January: 9.7h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.4h).

  • Average sunshine in January: 5h

The month with most sunshine is July (Average sunshine: 10h).
The month with least sunshine is December (Average sunshine: 4.1h).

Average UV index in January - Harrisburg, PA
  • Average UV index in January: 2

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 2).

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