Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The arrival of December corresponds with a temperature reduction, down from November's chilly 46.2°F (7.9°C) to an icy 36.7°F (2.6°C). An average low-temperature of 25.9°F (-3.4°C) is noted during the nights in December in Lock Haven.Humidity
The months with the highest humidity in Lock Haven are February and December, with an average relative humidity of 84%.Rainfall
In Lock Haven, in December, during 12.4 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. In Lock Haven, Pennsylvania, during the entire year, the rain falls for 174.7 days and collects up to 32.09" (815mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Lock Haven. In Lock Haven, in December, during 12.2 snowfall days, 4.76" (121mm) of snow is typically accumulated. Throughout the year, in Lock Haven, Pennsylvania, there are 56.1 snowfall days, and 24.84" (631mm) of snow is accumulated.Daylight
The month with the shortest days in Lock Haven is December, with an average of 9h and 18min of daylight.On the first day of December in Lock Haven, Pennsylvania, 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
In December, the average sunshine in Lock Haven, Pennsylvania, 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 health risk from exposure to the Sun's UV rays for average individuals.Note: In December, a regular UV index of 1 translates into these guidelines:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Frequently asked questions
How cold is December in Lock Haven?
What are the most humid months in Lock Haven?
What is the average humidity in December in Lock Haven?
How many days does it rain in December in Lock Haven?
How much does it snow in Lock Haven in December?
What is the month with the shortest days in Lock Haven?
What is the average length of the day in December in Lock Haven?
What time are sunrise and sunset in December in Lock Haven?
How long on average sun shines in December in Lock Haven?
What is the month with the lowest UV index in Lock Haven?
How high is the UV index in December in Lock Haven?
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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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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