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
January, with its average high-temperature of 31.6°F (-0.2°C) and an average low-temperature of 19.2°F (-7.1°C), holds the record as the coldest month.Humidity
The average relative humidity in January is 86%.Rainfall
In Portersville, in January, it is raining for 9.4 days, with typically 2.68" (68mm) of accumulated precipitation. Throughout the year, there are 179.7 rainfall days, and 35.35" (898mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. January is the month with the most snowfall in Portersville, Pennsylvania. Snow falls for 19.1 days and accumulates 7.68" (195mm) of snow.Daylight
In January, the average length of the day is 9h and 38min.On the first day of the month, sunrise is at 7:45 am and sunset at 5:02 pm. On the last day of January, sunrise is at 7:32 am and sunset at 5:35 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 2.6h of sunshine.UV index
The average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 2 during January leads to these advisories:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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 Portersville?
What is the average humidity in January?
How many days does it rain in January?
What is the snowiest month?
How many days does it snow in January?
How many hours of daylight does Portersville have in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Portersville have in January?
What is the UV index intensity in January?
Average temperature in January
Portersville, 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: 19.2°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in January
Portersville, 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
Portersville, 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 (5mph).
Average humidity in January
Portersville, 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
Portersville, PA
- Average rainfall in January: 2.68"
The wettest month (with the highest rainfall) is April (3.7").
The driest month (with the least rainfall) is November (2.28").
Average rainfall days in January
Portersville, PA
- Average rainfall days in January: 9.4 days
The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in January
Portersville, PA
- Average snowfall in January: 7.68"
The month with the highest snowfall is January (7.68").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Portersville, PA
- Average snowfall days in January: 19.1 days
The month with the highest number of snowfall days is January (19.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Portersville, 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 4min
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 36min).
Average sunshine days in January
Portersville, PA
- Average sunshine days in January: 8 days
The month with the most sunshine days is November (14 days).
The month with the least sunshine days is February (6.6 days).
Average UV index in January
Portersville, 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
Portersville, 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 35).
Average visibility in January
Portersville, 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).
Portersville, Pennsylvania, USA
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