Gettysburg
Pennsylvania, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Gettysburg, PA

The iconic and unifying Pennsylvania monument in a vast green field with neat grounds and green trees in the city of Gettysburg, clear sky
The iconic and unifying Pennsylvania monument in a vast green field with neat grounds and green trees in the city of Gettysburg, clear sky
January, like December, in Gettysburg, Pennsylvania, is a wintry winter month, with temperature in the range of an average high of 39°F (3.9°C) and an average low of 21°F (-6.1°C).

Temperature

January is the coldest month, with an average high-temperature of 39°F (3.9°C) and an average low-temperature of 21°F (-6.1°C).

Rainfall

In January, the rain falls for 11 days. Throughout January, 3.2" (82.3mm) of precipitation is accumulated. Throughout the year, there are 125 rainfall days, and 43.2" (1098.1mm) of precipitation is accumulated.

Daylight

In January, the average length of the day is 9.7h.

Sunshine

In Gettysburg, the average sunshine in January is 5h.

UV index

Months with the lowest UV index are January, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from the exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 2 in January transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from 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.

What is the coldest month in Gettysburg?

The coldest month in Gettysburg is January, with an average high-temperature of 39°F (3.9°C) and an average low-temperature of 21°F (-6.1°C).

What is the temperature in January in Gettysburg?

In January, in Gettysburg, Pennsylvania, the average high-temperature is 39°F (3.9°C), and the average low-temperature is 21°F (-6.1°C).

How much does it rain in Gettysburg in January?

In Gettysburg, Pennsylvania, in January, it is raining for 11 days, with typically 3.2" (82.3mm) of accumulated precipitation.

What is the average length of the day in January in Gettysburg?

In Gettysburg, the average length of the day in January is 9.7h.

How long on average sun shines in January in Gettysburg?

In Gettysburg, Pennsylvania, the average sunshine in January is 5h.

What are the months with the lowest UV index in Gettysburg?

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

How high is the UV index in January in Gettysburg?

In Gettysburg, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in January - Gettysburg, PA
  • Average high temperature in January: 39°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in January: 21°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (21°F).

Average rainfall in January - Gettysburg, PA
  • Average rainfall in January: 3.2"

Wettest months (with the highest rainfall) are May and June (4.3").
The driest month (with the lowest rainfall) is February (3").

Average rainfall days in January - Gettysburg, PA
  • Average rainfall days in January: 11 days

The month with the highest number of rainy days is May (12 days).
Months with the lowest number of rainy days are September and October (9 days).

Average daylight in January / Average sunshine in January - Gettysburg, 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

Months with most sunshine are June, July and August (Average sunshine: 9h).
The month with least sunshine is December (Average sunshine: 4h).

Average UV index in January - Gettysburg, 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).