January weather forecast
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

Weather in January

January, like December, in Harrisburg, Pennsylvania, is another cold winter month, with an average temperature ranging between min 22.1°F (-5.5°C) and max 35.1°F (1.7°C).

Temperature

January is the coldest month, with an average high-temperature of 35.1°F (1.7°C) and an average low-temperature of 22.1°F (-5.5°C).

Humidity

In Harrisburg, Pennsylvania, the average relative humidity in January is 77%.

Rainfall

January and February are months with the least rain in Harrisburg when the rain falls for 5.7 days and typically aggregates up to 0.71" (18mm) of rain.

Snowfall

Months with snowfall in Harrisburg are January through April, November and December. In January, it is snowing for 6.3 days. Throughout January, 1.18" (30mm) of snow is accumulated. Throughout the year, there are 19.9 snowfall days, and 4.29" (109mm) of snow is accumulated.

Daylight

In January, the average length of the day in Harrisburg is 9h and 41min.
On the first day of the month, sunrise is at 7:30 am and sunset at 4:52 pm. On the last day of January, in Harrisburg, Pennsylvania, sunrise is at 7:17 am and sunset at 5:24 pm EST.

Sunshine

The average sunshine in January in Harrisburg is 4.6h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Harrisburg. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
[Resources]

FAQ

What is the coldest month in Harrisburg?

January is the coldest month in Harrisburg, with an average high-temperature of 35.1°F (1.7°C) and an average low-temperature of 22.1°F (-5.5°C).

What is the average humidity in January in Harrisburg?

The average relative humidity in January is 77%.

What is the driest month in Harrisburg?

January and February are months with the least rain in Harrisburg when the rain falls for 5.7 days and typically aggregates up to 0.71" (18mm) of rain.

How much does it rain in Harrisburg in January?

In Harrisburg, in January, during 5.7 rainfall days, 0.71" (18mm) of precipitation is typically accumulated.

How many days does it snow in January in Harrisburg?

In Harrisburg, in January, during 6.3 snowfall days, 1.18" (30mm) of snow is typically accumulated.

How many hours of daylight does Harrisburg have in January?

The average day length in January is 9h and 41min.

When is the sunrise / sunset in January in Harrisburg?

On the first day of January in Harrisburg, sunrise is at 7:30 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:24 pm EST.

How long on average sun shines in January in Harrisburg?

In Harrisburg, the average sunshine duration in January is 4.6h.

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

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Harrisburg.

What is the UV index reading in January in Harrisburg?

In January, the average daily maximum UV index in Harrisburg is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Harrisburg, PA

Average temperature in January - Harrisburg, PA
  • Average high temperature in January: 35.1°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in January: 22.1°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

[Resources]

Average pressure in January
Harrisburg, PA

Average pressure in January - Harrisburg, PA
  • Average pressure in January: 30.1"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

[Resources]

Average wind speed in January
Harrisburg, PA

Average wind speed in January - Harrisburg, PA
  • Average wind speed in January: 8mph

The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

[Resources]

Average humidity in January
Harrisburg, PA

Average humidity in January - Harrisburg, PA
  • Average humidity in January: 77%

The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are March and April (75%).

[Resources]

Average rainfall in January
Harrisburg, PA

Average rainfall in January - Harrisburg, PA
  • Average rainfall in January: 0.71"

The wettest month (with the highest rainfall) is August (1.3").
The driest months (with the least rainfall) are January and February (0.71").

[Resources]

Average rainfall days in January
Harrisburg, PA

Average rainfall days in January - Harrisburg, PA
  • Average rainfall days in January: 5.7 days

The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (5.7 days).

[Resources]

Average snowfall in January
Harrisburg, PA

Average snowfall in January - Harrisburg, PA
  • Average snowfall in January: 1.18"

The month with the highest snowfall is February (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").

[Resources]

Average snowfall days in January
Harrisburg, PA

Average snowfall days in January - Harrisburg, PA
  • Average snowfall days in January: 6.3 days

The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

[Resources]

Average daylight in January /
Average sunshine in January
Harrisburg, PA

Average daylight in January / Average sunshine in January - Harrisburg, PA
  • Average daylight in January: 9h and 41min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 22min).

  • Average sunshine in January: 4h and 36min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

[Resources]

Average sunshine days in January
Harrisburg, PA

Average sunshine days in January - Harrisburg, PA
  • Average sunshine days in January: 20.6 days

The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is July (14.1 days).

[Resources]

Average UV index in January
Harrisburg, PA

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

The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

[Resources]

Average cloud cover in January
Harrisburg, PA

Average cloud cover in January - Harrisburg, PA
  • Average cloud cover in January: 49

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 31).

[Resources]

Average visibility in January
Harrisburg, PA

Average visibility in January - Harrisburg, PA
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location