December weather forecast
Lock Haven, PA

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Weather in December

December, the first month of the winter in Lock Haven, is still a cold month, with an average temperature ranging between min 25.9°F (-3.4°C) and max 36.7°F (2.6°C).

Temperature

December suggests a modest reduction in the average high-temperature, shifting from a frosty 46.2°F (7.9°C) in November to a cold 36.7°F (2.6°C). Throughout the month of December, Lock Haven expects an average low of 25.9°F (-3.4°C).

Humidity

February and December, with an average relative humidity of 84%, are the most humid months in Lock Haven.

Rainfall

In December, in Lock Haven, the rain falls for 12.4 days. Throughout December, 2.68" (68mm) of precipitation is accumulated. In Lock Haven, during the entire year, the rain falls for 174.7 days and collects up to 32.09" (815mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In December, it is snowing for 12.2 days. Throughout December, 4.76" (121mm) of snow is accumulated. Throughout the year, there are 56.1 snowfall days, and 24.84" (631mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:16 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:51 pm EST.

Sunshine

The average sunshine in December is 3.4h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Take note! UV radiation from the Sun can double in intensity due to snow reflection.

Frequently asked questions

How cold is it in Lock Haven in December?

The high-temperature, in December, in Lock Haven, is 36.7°F (2.6°C), while the low-temperature averages to 25.9°F (-3.4°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, in July is appraised at 87.8°F (31°C).

What are the most humid months?

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

What is the average humidity in December?

The average relative humidity in December is 84%.

How many days does it rain in December?

In Lock Haven, in December, during 12.4 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

How many days does it snow in December?

In Lock Haven, during December, snow falls for 12.2 days and regularly aggregates up to 4.76" (121mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 18min of daylight.

How many hours of daylight does Lock Haven have in December?

In Lock Haven, Pennsylvania, the average day length in December is 9h and 16min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:16 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:51 pm EST.

How long on average sun shines in December?

In Lock Haven, the average sunshine duration in December is 3.4h.

What is the month with the lowest UV index in Lock Haven?

The month with the lowest UV index is December, with an average maximum UV index of 1.

What is the UV index intensity in December?

In December, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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 December
Lock Haven, PA

Average temperature in December - Lock Haven, PA
  • Average high temperature in December: 36.7°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (30.9°F).

  • Average low temperature in December: 25.9°F

The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

Average pressure in December
Lock Haven, PA

Average pressure in December - Lock Haven, PA
  • Average pressure in December: 30.09"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).

Average wind speed in December
Lock Haven, PA

Average wind speed in December - Lock Haven, PA
  • Average wind speed in December: 7mph

The windiest months (with the highest average wind speed) are January and April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
Lock Haven, PA

Average humidity in December - Lock Haven, PA
  • Average humidity in December: 84%

The months with the highest relative humidity are February and December (84%).
The months with the lowest relative humidity are April, June and July (77%).

Average rainfall in December
Lock Haven, PA

Average rainfall in December - Lock Haven, PA
  • Average rainfall in December: 2.68"

The wettest month (with the highest rainfall) is April (3.54").
The driest month (with the least rainfall) is November (2.09").

Average rainfall days in December
Lock Haven, PA

Average rainfall days in December - Lock Haven, PA
  • Average rainfall days in December: 12.4 days

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (10.3 days).

Average snowfall in December
Lock Haven, PA

Average snowfall in December - Lock Haven, PA
  • Average snowfall in December: 4.76"

The month with the highest snowfall is February (7.13").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Lock Haven, PA

Average snowfall days in December - Lock Haven, PA
  • Average snowfall days in December: 12.2 days

The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Lock Haven, PA

Average daylight in December / Average sunshine in December - Lock Haven, PA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 3h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).

Average sunshine days in December
Lock Haven, PA

Average sunshine days in December - Lock Haven, PA
  • Average sunshine days in December: 10.3 days

The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (8.8 days).

Average UV index in December
Lock Haven, PA

Average UV index in December - Lock Haven, PA
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
Lock Haven, PA

Average cloud cover in December - Lock Haven, PA
  • Average cloud cover in December: 64

The months with the most cloud cover are January and December (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 37).

Average visibility in December
Lock Haven, PA

Average visibility in December - Lock Haven, PA
  • Average visibility in December: 4mi

The months with the highest visibility are January, March, April, May, June, July, August, October and November (5mi).
The months with the lowest visibility are February, September and December (4mi).

Lock Haven, Pennsylvania, USA

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