January weather forecastMars, PA
January
Weather in January
January, like December, is a freezing cold winter month in Mars, Pennsylvania, with temperature in the range of an average low of 19.8°F (-6.8°C) and an average high of 31.6°F (-0.2°C).Temperature
January brings the lowest temperatures, with an average high of 31.6°F (-0.2°C) and an average low of 19.8°F (-6.8°C).Humidity
In Mars, the average relative humidity in January is 86%.Rainfall
In Mars, in January, it is raining for 8.6 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, there are 162.5 rainfall days, and 26.02" (661mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Mars, in January, snow falls for 17 days, with typically accumulated 3.78" (96mm) of snow. In Mars, Pennsylvania, during the entire year, snow falls for 58.1 days and aggregates up to 14.41" (366mm) of snow.Daylight
The average length of the day in January is 9h and 39min.On the first day of January, sunrise is at 7:43 am and sunset at 5:03 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:35 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 2.7h of sunshine.UV index
The average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 2 during January morphs into the following directions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Mars, PA
- Average high temperature in January: 31.6°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 (31.6°F).
- Average low temperature in January: 19.8°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 (19.8°F).
Average pressure in January
Mars, PA
- Average pressure in January: 30.1"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 January
Mars, PA
- Average wind speed in January: 8.1mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in January
Mars, 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, July and August (77%).
Average rainfall in January
Mars, PA
- Average rainfall in January: 1.73"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is November (1.61").
Average rainfall days in January
Mars, PA
- Average rainfall days in January: 8.6 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in January
Mars, PA
- Average snowfall in January: 3.78"
The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Mars, PA
- Average snowfall days in January: 17 days
The month with the highest number of snowfall days is January (17 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Mars, PA
- Average daylight in January: 9h and 42min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 2h and 42min
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 42min).
Average sunshine days in January
Mars, PA
- Average sunshine days in January: 10 days
The month with the most sunshine days is November (15.4 days).
The month with the least sunshine days is February (9 days).
Average UV index in January
Mars, PA
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Mars, PA
- Average cloud cover in January: 72
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in January
Mars, PA
- Average visibility in January: 4mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
