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
The coldest period tends to be January, when average temperatures fluctuate between a high of 31.6°F (-0.2°C) and a low of 19.2°F (-7.1°C).Humidity
The average relative humidity in January in Portersville is 86%.Rainfall
In Portersville, Pennsylvania, during January, the rain falls for 9.4 days and regularly aggregates up to 2.68" (68mm) of precipitation. Throughout the year, there are 179.7 rainfall days, and 35.35" (898mm) of precipitation is accumulated.Snowfall
Months with snowfall in Portersville are January through May, October through December. January is the month with the most snowfall in Portersville. Snow falls for 19.1 days and accumulates 7.68" (195mm) of snow.Daylight
In January, the average length of the day in Portersville is 9h and 38min.On the first day of January, sunrise is at 7:45 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:35 pm EST.
Sunshine
With an average of 2.6h of sunshine, January has the least sunshine of the year.UV index
In January, the average daily maximum UV index in Portersville is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 2 during January morphs into the following directions:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
What are the coldest months in Portersville?
How cold is it in Portersville in January?
What is the average humidity in January in Portersville?
How many days does it rain in January in Portersville?
When does it snow the most in Portersville?
How much does it snow in Portersville in January?
How many hours of daylight does Portersville have in January?
When are sunrise and sunset in January in Portersville?
What is the month with the least sunshine in Portersville?
How long on average sun shines in January in Portersville?
How high is the UV index in January in Portersville?
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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