Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
With average high temperatures of 31.5°F (-0.3°C) and lows of 18.9°F (-7.3°C), January is the coldest month.Humidity
In Mount Jackson, the average relative humidity in January is 86%.Rainfall
In Mount Jackson, in January, during 8.8 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. In Mount Jackson, during the entire year, the rain falls for 177.6 days and collects up to 34.92" (887mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. January is the month with the most snowfall. Snow falls for 18.6 days and accumulates 6.93" (176mm) of snow.Daylight
The average length of the day in January is 9h and 38min.On the first day of January, sunrise is at 7:46 am and sunset at 5:03 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 5:36 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 2.5h of sunshine.UV index
The average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 2 during January translates into the following directions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is January in Mount Jackson?
What is the average humidity in January?
How many days does it rain in January?
When does it snow the most?
How many days does it snow in January in Mount Jackson?
What is the average length of the day in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine in Mount Jackson?
How many hours of sunshine does Mount Jackson have in January?
What is the UV index intensity in January?
Average temperature in January
Mount Jackson, PA
- Average high temperature in January: 31.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in January: 18.9°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 January
Mount Jackson, PA
- Average pressure in January: 30.1"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 January
Mount Jackson, PA
- Average wind speed in January: 8.3mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).
Average humidity in January
Mount Jackson, PA
- Average humidity in January: 86%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, May, June, July and August (78%).
Average rainfall in January
Mount Jackson, PA
- Average rainfall in January: 2.64"
The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is November (2.24").
Average rainfall days in January
Mount Jackson, PA
- Average rainfall days in January: 8.8 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in January
Mount Jackson, PA
- Average snowfall in January: 6.93"
The month with the highest snowfall is January (6.93").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Mount Jackson, PA
- Average snowfall days in January: 18.6 days
The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Mount Jackson, PA
- Average daylight in January: 9h and 4min
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 January: 2h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in January
Mount Jackson, PA
- Average sunshine days in January: 7.7 days
The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is February (7 days).
Average UV index in January
Mount Jackson, PA
- Average UV index in January: 2
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 January
Mount Jackson, PA
- Average cloud cover in January: 73
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in January
Mount Jackson, PA
- Average visibility in January: 4mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February and December (4mi).
Mount Jackson, Pennsylvania, USA
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