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 month is January, with an average high-temperature of 29.8°F (-1.2°C) and an average low-temperature of 18°F (-7.8°C).Humidity
In January, the average relative humidity is 83%.Rainfall
January and September are months with the least rain when the rain falls for 5.2 days and typically aggregates up to 1.38" (35mm) of rain.Snowfall
Months with snowfall are January through May, October through December. In Stephen Heights, during January, snow falls for 9.6 days and regularly aggregates up to 4.65" (118mm) of snow. In Stephen Heights, during the entire year, snow falls for 48.4 days and aggregates up to 22.01" (559mm) of snow.Daylight
The average length of the day in January is 9h and 36min.On the first day of the month, sunrise is at 7:27 am and sunset at 4:43 pm. On the last day of January, sunrise is at 7:14 am and sunset at 5:16 pm EST.
Sunshine
The average sunshine in January is 3.6h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.Note: In January, the maximum UV index of 1 transforms into these recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is January?
What is the average humidity in January?
What is the driest month?
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 are sunrise and sunset in January?
How long on average sun shines in January?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Stephen Heights, PA
- Average high temperature in January: 29.8°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in January: 18°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in January
Stephen Heights, PA
- Average pressure in January: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Stephen Heights, PA
- Average wind speed in January: 8.4mph
The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in January
Stephen Heights, PA
- Average humidity in January: 83%
The months with the highest relative humidity are February and December (85%).
The months with the lowest relative humidity are April, June and July (78%).
Average rainfall in January
Stephen Heights, PA
- Average rainfall in January: 1.38"
The wettest months (with the highest rainfall) are May and July (2.4").
The driest months (with the least rainfall) are January and September (1.38").
Average rainfall days in January
Stephen Heights, PA
- Average rainfall days in January: 5.2 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in January
Stephen Heights, PA
- Average snowfall in January: 4.65"
The month with the highest snowfall is March (5.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Stephen Heights, PA
- Average snowfall days in January: 9.6 days
The month with the highest number of snowfall days is February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Stephen Heights, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days in January
Stephen Heights, PA
- Average sunshine days in January: 18.4 days
The month with the most sunshine days is January (18.4 days).
The month with the least sunshine days is May (11 days).
Average UV index in January
Stephen Heights, 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
Stephen Heights, PA
- Average cloud cover in January: 63
The months with the most cloud cover are February and December (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in January
Stephen Heights, PA
- Average visibility in January: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Stephen Heights, Pennsylvania, USA
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