January weather forecast
California, PA

Share

Weather in January

January, the same as December, is an icy winter month in California, Pennsylvania, with an average temperature fluctuating between 21.2°F (-6°C) and 34°F (1.1°C).

Temperature

January, with its high-temperature average of 34°F (1.1°C) and a low-temperature average of 21.2°F (-6°C), is the coldest month.

Humidity

The months with the highest humidity are January and February, with an average relative humidity of 84%.

Rainfall

In California, in January, during 11.7 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. Throughout the year, there are 191.3 rainfall days, and 35.24" (895mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. The month with the most snowfall is January, when snow falls for 17.8 days and typically aggregates up to 6.26" (159mm) of snow.

Daylight

The average length of the day in January is 9h and 43min.
On the first day of January, sunrise is at 7:41 am and sunset at 5:04 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:36 pm EST.

Sunshine

The month with the least sunshine is January, with an average of 3h of sunshine.

UV index

In January, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: A maximum high daily UV index of 2 during January translates into the following directions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of 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. Stay sun-safe with clothing that is both closely woven and worn loosely. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.

Frequently asked questions

What month is the coldest?

In California, Pennsylvania, the lowest temperatures are generally noted in January, averaging a high of 34°F (1.1°C) and a low of 21.2°F (-6°C).

How cold is January?

In January, the average high-temperature and low-temperature in California are 34°F (1.1°C) and 21.2°F (-6°C) respectively.

What is the most humid month?

January and February, with an average relative humidity of 84%, are most humid months.

What is the average humidity in January?

In January, the average relative humidity is 84%.

How much does it rain in January?

In California, Pennsylvania, during January, the rain falls for 11.7 days and regularly aggregates up to 2.64" (67mm) of precipitation.

What is the snowiest month?

January is the month with the most snowfall. Snow falls for 17.8 days and accumulates 6.26" (159mm) of snow.

How many days does it snow in January?

In California, in January, during 17.8 snowfall days, 6.26" (159mm) of snow is typically accumulated.

What is the average length of the day in January?

In California, the average day length in January is 9h and 43min.

When are sunrise and sunset in January?

On the first day of January, sunrise is at 7:41 am and sunset at 5:04 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:36 pm EST.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 3h of sunshine.

How long on average sun shines in January?

In California, the average sunshine duration in January is 3h.

How high is the UV index in January?

The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.
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
California, PA

Average temperature in January - California, PA
  • Average high temperature in January: 34°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in January: 21.2°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

Average pressure in January
California, PA

Average pressure in January - California, PA
  • Average pressure in January: 30.11"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).

Average wind speed in January
California, PA

Average wind speed in January - California, PA
  • Average wind speed in January: 7.9mph

The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

Average humidity in January
California, PA

Average humidity in January - California, PA
  • Average humidity in January: 84%

The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (76%).

Average rainfall in January
California, PA

Average rainfall in January - California, PA
  • Average rainfall in January: 2.64"

The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is November (2.13").

Average rainfall days in January
California, PA

Average rainfall days in January - California, PA
  • Average rainfall days in January: 11.7 days

The month with the highest number of rainy days is May (21.8 days).
The months with the least rainy days are January and February (11.7 days).

Average snowfall in January
California, PA

Average snowfall in January - California, PA
  • Average snowfall in January: 6.26"

The month with the highest snowfall is January (6.26").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
California, PA

Average snowfall days in January - California, PA
  • Average snowfall days in January: 17.8 days

The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

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 24min).

  • Average sunshine in January: 3h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

Average sunshine days in January
California, PA

Average sunshine days in January - California, PA
  • Average sunshine days in January: 6.8 days

The month with the most sunshine days is November (14.3 days).
The month with the least sunshine days is January (6.8 days).

Average UV index in January
California, PA

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

The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in January
California, PA

Average cloud cover in January - California, PA
  • Average cloud cover in January: 68

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in January
California, PA

Average visibility in January - California, PA
  • Average visibility in January: 4mi

The months with the highest visibility are April, August and November (6mi).
The months with the lowest visibility are January and February (4mi).

California, Pennsylvania, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location