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 light shift in temperature, down from a fresh 51.1°F (10.6°C) in November to a wintry 42.3°F (5.7°C). Stewartstown experiences an average low-temperature of 30.7°F (-0.7°C) in month of December.Humidity
In Stewartstown, Pennsylvania, the average relative humidity in December is 79%.Rainfall
In Stewartstown, Pennsylvania, during December, the rain falls for 9.2 days and regularly aggregates up to 1.73" (44mm) of precipitation. Throughout the year, in Stewartstown, there are 145.3 rainfall days, and 24.88" (632mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 2.9 days. Throughout December, 1.42" (36mm) of snow is accumulated. Throughout the year, in Stewartstown, there are 19.2 snowfall days, and 10.59" (269mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:08 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:52 pm EST.
Sunshine
The average sunshine in December is 5h.UV index
The months with the lowest UV index in Stewartstown 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 threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: An average UV index of 2 in December transforms into this advice:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Boost your sun resistance with garments that are densely woven yet spacious. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
Is December cold in Stewartstown?
What is the average humidity in December in Stewartstown?
How many days does it rain in December in Stewartstown?
How much does it snow in Stewartstown in December?
What is the month with the shortest days in Stewartstown?
How many hours of daylight does Stewartstown have in December?
When are sunrise and sunset in December in Stewartstown?
How long on average sun shines in December in Stewartstown?
When is the lowest UV index in Stewartstown?
What is the UV index reading in December in Stewartstown?
Average temperature in December
Stewartstown, PA
- Average high temperature in December: 42.3°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in December: 30.7°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in December
Stewartstown, PA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Stewartstown, PA
- Average wind speed in December: 8.2mph
The windiest months (with the highest average wind speed) are February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Stewartstown, PA
- Average humidity in December: 79%
The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are January, March, April and November (76%).
Average rainfall in December
Stewartstown, PA
- Average rainfall in December: 1.73"
The wettest month (with the highest rainfall) is August (3.03").
The driest month (with the least rainfall) is February (1.38").
Average rainfall days in December
Stewartstown, PA
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in December
Stewartstown, PA
- Average snowfall in December: 1.42"
The month with the highest snowfall is March (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Stewartstown, PA
- Average snowfall days in December: 2.9 days
The month with the highest number of snowfall days is January (5.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Stewartstown, PA
- Average daylight in December: 9h and 2min
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 December: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Stewartstown, PA
- Average sunshine days in December: 19 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is May (11.1 days).
Average UV index in December
Stewartstown, PA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Stewartstown, PA
- Average cloud cover in December: 46
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Stewartstown, PA
- Average visibility in December: 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).
Stewartstown, Pennsylvania, USA
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