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
Onset of December comes with a temperature decline, the average high falling from a chilly 46.6°F (8.1°C) in November to a cold 37°F (2.8°C). The average temperature in Jonas, Pennsylvania, drops to a subzero cold 26.2°F (-3.2°C) during the night in the month of December.Humidity
The average relative humidity in December in Jonas, Pennsylvania, is 83%.Rainfall
In Jonas, during December, the rain falls for 8.3 days and regularly aggregates up to 2.05" (52mm) of precipitation. In Jonas, during the entire year, the rain falls for 143 days and collects up to 25.91" (658mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Jonas, in December, snow falls for 5.1 days, with typically accumulated 2.72" (69mm) of snow. Throughout the year, in Jonas, there are 31.9 snowfall days, and 16.1" (409mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:08 am and sunset at 4:34 pm. On the last day of December, in Jonas, sunrise is at 7:26 am and sunset at 4:44 pm EST.
Sunshine
In Jonas, the average sunshine in December is 4.1h.UV index
The month with the lowest UV index in Jonas is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. To cut down UV radiation exposure by about half, sport a wide-brim hat. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Jonas?
What is the average humidity in December in Jonas?
How many days does it rain in December in Jonas?
How many days does it snow in December in Jonas?
What is the month with the shortest days in Jonas?
How many hours of daylight does Jonas have in December?
When are sunrise and sunset in December in Jonas?
How long on average sun shines in December in Jonas?
When is the lowest UV index in Jonas?
What is the UV index intensity in December in Jonas?
Average temperature in December
Jonas, PA
- Average high temperature in December: 37°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in December: 26.2°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Jonas, PA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Jonas, PA
- Average wind speed in December: 7.8mph
The windiest months (with the highest average wind speed) are January, February and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Jonas, PA
- Average humidity in December: 83%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April and July (77%).
Average rainfall in December
Jonas, PA
- Average rainfall in December: 2.05"
The wettest month (with the highest rainfall) is July (2.83").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in December
Jonas, PA
- Average rainfall days in December: 8.3 days
The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Jonas, PA
- Average snowfall in December: 2.72"
The month with the highest snowfall is January (4.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Jonas, PA
- Average snowfall days in December: 5.1 days
The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Jonas, 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: 4h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in December
Jonas, PA
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in December
Jonas, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Jonas, PA
- Average cloud cover in December: 57
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in December
Jonas, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Jonas, Pennsylvania, USA
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