January weather forecast
Gettysburg, PA

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The iconic and unifying Pennsylvania monument in a vast green field with neat grounds and green trees in the city of Gettysburg, Pennsylvania
The iconic and unifying Pennsylvania monument in a vast green field with neat grounds and green trees in the city of Gettysburg, Pennsylvania

Weather in January

During January in Gettysburg, Pennsylvania, weather patterns exhibit classic winter conditions, being the second coldest month after December. The low temperatures bring about the formation of a frosty landscape typical during this time of year. Falling below freezing, temperatures may range from 22.6°F (-5.2°C) to 35.6°F (2°C) that facilitates frequent snowfall with an average accumulation of 1.26" (32mm) throughout the month. Days in January are characterized by short daylight hours and a high likelihood of cloud cover. Barometric pressure systems typical of winter months are also a common occurrence.

Temperature

During the coldest month in Gettysburg, January, temperatures average a high of 35.6°F (2°C) and a low of 22.6°F (-5.2°C).

Humidity

In January, the average relative humidity is 76%.

Rainfall

January and February are months with the least rain when the rain falls for 5 days and typically aggregates up to 0.71" (18mm) of rain.

Snowfall

January through April, October through December are months with snowfall. In January, in Gettysburg, it is snowing for 6.1 days. Throughout January, 1.26" (32mm) of snow is accumulated. Throughout the year, in Gettysburg, Pennsylvania, there are 20.9 snowfall days, and 4.8" (122mm) of snow is accumulated.

Daylight

In Gettysburg, the average length of the day in January is 9h and 44min.
On the first day of January, sunrise is at 7:30 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 5:26 pm EST.

Sunshine

In January, the average sunshine is 4.8h.

UV index

The months with the lowest UV index in Gettysburg are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In January, an average UV index of 2 transforms into the following instructions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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Frequently asked questions

What is the coldest month in Gettysburg?

January is the month when Gettysburg sees the average lowest temperatures, with a high of 35.6°F (2°C) and a low of 22.6°F (-5.2°C).

How cold is January in Gettysburg?

In Gettysburg, 35.6°F (2°C) is the average high-temperature and 22.6°F (-5.2°C) is the average low-temperature during January.

What is the average humidity in January in Gettysburg?

In January, the average relative humidity in Gettysburg is 76%.

What is the driest month in Gettysburg?

January and February are months with the least rain when the rain falls for 5 days and typically aggregates up to 0.71" (18mm) of rain.

How many days does it rain in January in Gettysburg?

In Gettysburg, Pennsylvania, in January, during 5 rainfall days, 0.71" (18mm) of precipitation is typically accumulated.

How much does it snow in Gettysburg in January?

In Gettysburg, Pennsylvania, in January, during 6.1 snowfall days, 1.26" (32mm) of snow is typically accumulated.

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

In Gettysburg, the average day length in January is 9h and 44min.

When is the sunrise / sunset in January in Gettysburg?

On the first day of January in Gettysburg, Pennsylvania, sunrise is at 7:30 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 5:26 pm EST.

How long on average sun shines in January in Gettysburg?

The average sunshine duration in January in Gettysburg, Pennsylvania, is 4.8h.

When is the lowest UV index in Gettysburg?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

What is the UV index intensity in January in Gettysburg?

The average daily maximum UV index in January in Gettysburg, Pennsylvania, 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Gettysburg, PA

Average temperature in January - Gettysburg, PA
  • Average high temperature in January: 35.6°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in January: 22.6°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

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Average pressure in January
Gettysburg, PA

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

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in January
Gettysburg, PA

Average wind speed in January - Gettysburg, PA
  • Average wind speed in January: 8.1mph

The windiest months (with the highest average wind speed) are January, February and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in January
Gettysburg, PA

Average humidity in January - Gettysburg, PA
  • Average humidity in January: 76%

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

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Average rainfall in January
Gettysburg, PA

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

The wettest month (with the highest rainfall) is July (1.46").
The driest months (with the least rainfall) are January and February (0.71").

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Average rainfall days in January
Gettysburg, PA

Average rainfall days in January - Gettysburg, PA
  • Average rainfall days in January: 5 days

The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (5 days).

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Average snowfall in January
Gettysburg, PA

Average snowfall in January - Gettysburg, PA
  • Average snowfall in January: 1.26"

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

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Average snowfall days in January
Gettysburg, PA

Average snowfall days in January - Gettysburg, PA
  • Average snowfall days in January: 6.1 days

The month with the highest number of snowfall days is February (6.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Gettysburg, PA
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in January: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in January
Gettysburg, PA

Average sunshine days in January - Gettysburg, PA
  • Average sunshine days in January: 20.8 days

The month with the most sunshine days is November (21.6 days).
The month with the least sunshine days is August (13.6 days).

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Average UV index in January
Gettysburg, PA

Average UV index in January - Gettysburg, 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, November and December (UV index 2).

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Average cloud cover in January
Gettysburg, PA

Average cloud cover in January - Gettysburg, PA
  • Average cloud cover in January: 48

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in January
Gettysburg, PA

Average visibility in January - Gettysburg, 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).

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Gettysburg, Pennsylvania, USA

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