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 29.3°F (-1.5°C) and a low of 17.1°F (-8.3°C).Humidity
The average relative humidity in January is 83%.Rainfall
In Slate Run, in January, during 8.7 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. In Slate Run, during the entire year, the rain falls for 168.8 days and collects up to 32.56" (827mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In January, it is snowing for 17.1 days. Throughout January, 8.19" (208mm) of snow is accumulated. In Slate Run, during the entire year, snow falls for 71.6 days and aggregates up to 35.47" (901mm) of snow.Daylight
In Slate Run, Pennsylvania, the average length of the day in January is 9h and 35min.On the first day of the month, sunrise is at 7:36 am and sunset at 4:50 pm. On the last day of January, sunrise is at 7:22 am and sunset at 5:24 pm EST.
Sunshine
January and December, with an average of 3h of sunshine, are months with the least sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In January, the maximum UV index of 1 transforms into these recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is it in January?
What is the average humidity in January?
How many days does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine in Slate Run?
How long on average sun shines in January in Slate Run?
What is the month with the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Slate Run, PA
- Average high temperature in January: 29.3°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in January: 17.1°F
The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in January
Slate Run, PA
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Slate Run, PA
- Average wind speed in January: 8mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in January
Slate Run, PA
- Average humidity in January: 83%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is July (77%).
Average rainfall in January
Slate Run, PA
- Average rainfall in January: 2.28"
The wettest month (with the highest rainfall) is April (3.7").
The driest month (with the least rainfall) is November (2.13").
Average rainfall days in January
Slate Run, PA
- Average rainfall days in January: 8.7 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (8.4 days).
Average snowfall in January
Slate Run, PA
- Average snowfall in January: 8.19"
The month with the highest snowfall is February (9.84").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Slate Run, PA
- Average snowfall days in January: 17.1 days
The month with the highest number of snowfall days is January (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Slate Run, 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 12min).
- Average sunshine in January: 3h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The months with the least sunshine are January and December (Average sunshine: 3h and 0min).
Average sunshine days in January
Slate Run, PA
- Average sunshine days in January: 9.8 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (7.9 days).
Average UV index in January
Slate Run, PA
- Average UV index in January: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Slate Run, PA
- Average cloud cover in January: 70
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 41).
Average visibility in January
Slate Run, PA
- Average visibility in January: 4mi
The months with the highest visibility are March, April, May, June, July and November (5mi).
The months with the lowest visibility are January, February, August, September, October and December (4mi).
Slate Run, Pennsylvania, USA
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