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
During the coldest month, January, temperatures average a high of 34.7°F (1.5°C) and a low of 21.9°F (-5.6°C).Humidity
In January, the average relative humidity is 77%.Rainfall
In Plainfield, in January, it is raining for 7.9 days, with typically 2.01" (51mm) of accumulated precipitation. In Plainfield, during the entire year, the rain falls for 158 days and collects up to 28.03" (712mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Plainfield. January is the month with the most snowfall. Snow falls for 8.7 days and accumulates 4.53" (115mm) of snow.Daylight
The average length of the day in January is 9h and 42min.On the first day of the month, sunrise is at 7:31 am and sunset at 4:53 pm. On the last day of January, sunrise is at 7:19 am and sunset at 5:26 pm EST.
Sunshine
In Plainfield, the average sunshine in January is 4.6h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 2 during January leads to these advisories:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
How cold is January?
What is the average humidity in January?
How many days does it rain in January?
When does it snow the most in Plainfield?
How much does it snow in January?
How many hours of daylight does Plainfield have in January?
When are sunrise and sunset in January?
How many hours of sunshine does Plainfield have in January?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Plainfield, PA
- Average high temperature in January: 34.7°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in January: 21.9°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in January
Plainfield, PA
- Average pressure in January: 30.1"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
Plainfield, PA
- Average wind speed in January: 7.9mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in January
Plainfield, PA
- Average humidity in January: 77%
The months with the highest relative humidity are February, May and October (80%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in January
Plainfield, PA
- Average rainfall in January: 2.01"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in January
Plainfield, PA
- Average rainfall days in January: 7.9 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in January
Plainfield, PA
- Average snowfall in January: 4.53"
The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Plainfield, PA
- Average snowfall days in January: 8.7 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Plainfield, 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: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in January
Plainfield, PA
- Average sunshine days in January: 16.8 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (11 days).
Average UV index in January
Plainfield, PA
- Average UV index in January: 2
The months with the highest UV index are May, June and 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
Plainfield, PA
- Average cloud cover in January: 51
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in January
Plainfield, PA
- Average visibility in January: 5mi
The months with the highest visibility are April, June, July, August, November and December (6mi).
The months with the lowest visibility are January, February, March, May, September and October (5mi).
Plainfield, Pennsylvania, USA
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