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
In Mammoth, the month of January is known for its lowest average temperatures, reaching a high of 33.3°F (0.7°C) and a low of 20.3°F (-6.5°C).Humidity
January and February, with an average relative humidity of 85%, are the most humid months.Rainfall
In Mammoth, in January, during 9.8 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, there are 185.4 rainfall days, and 34.02" (864mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is January, when snow falls for 17.3 days and typically aggregates up to 7.09" (180mm) of snow.Daylight
In Mammoth, the average length of the day in January is 9h and 42min.On the first day of January, sunrise is at 7:40 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:34 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 3h of sunshine.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: During January, 2 as the daily maximum UV index converts into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Stay sun-safe with clothing that is both closely woven and worn loosely. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
How much does it rain in January?
What is the snowiest month?
How many days does it snow in January?
How many hours of daylight does Mammoth have in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine in Mammoth?
How long on average sun shines in January?
What is the month with the lowest UV index in Mammoth?
What is the UV index intensity in January?
Average temperature in January
Mammoth, PA
- Average high temperature in January: 33.3°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.3°F).
- Average low temperature in January: 20.3°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in January
Mammoth, PA
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in January
Mammoth, PA
- Average wind speed in January: 8.5mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in January
Mammoth, PA
- Average humidity in January: 85%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in January
Mammoth, PA
- Average rainfall in January: 2.68"
The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is November (2.01").
Average rainfall days in January
Mammoth, PA
- Average rainfall days in January: 9.8 days
The month with the highest number of rainy days is May (22 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in January
Mammoth, PA
- Average snowfall in January: 7.09"
The month with the highest snowfall is January (7.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Mammoth, PA
- Average snowfall days in January: 17.3 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Mammoth, PA
- Average daylight in January: 9h and 4min
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 24min).
- Average sunshine in January: 3h
The month with the most sunshine is August (Average sunshine: 10h).
The month with the least sunshine is January (Average sunshine: 3h).
Average sunshine days in January
Mammoth, PA
- Average sunshine days in January: 6.5 days
The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is January (6.5 days).
Average UV index in January
Mammoth, PA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Mammoth, PA
- Average cloud cover in January: 69
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in January
Mammoth, 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).
Mammoth, Pennsylvania, USA
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