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 time of the year is January, with temperatures averaging a high of 33.1°F (0.6°C) and a low of 21°F (-6.1°C).Humidity
January and February, with an average relative humidity of 84%, are the most humid months in Pittsburgh.Rainfall
In Pittsburgh, in January, during 8.9 rainfall days, 1.69" (43mm) of precipitation is typically accumulated. Throughout the year, there are 163.6 rainfall days, and 26.93" (684mm) of precipitation is accumulated.Snowfall
Months with snowfall in Pittsburgh are January through April, October through December. The month with the most snowfall is January, when snow falls for 14.4 days and typically aggregates up to 3.31" (84mm) of snow.Daylight
The average length of the day in January is 9h and 41min.On the first day of January in Pittsburgh, sunrise is at 7:43 am and sunset at 5:03 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:36 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 2.8h of sunshine.UV index
In January, the average daily maximum UV index in Pittsburgh, Pennsylvania, is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 2 during January leads to these instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
What part of the year is the coldest in Pittsburgh?
How cold is it in Pittsburgh in January?
What are the most humid months in Pittsburgh?
What is the average humidity in January in Pittsburgh?
How many days does it rain in January in Pittsburgh?
What is the snowiest month in Pittsburgh?
How much does it snow in Pittsburgh in January?
How many hours of daylight does Pittsburgh have in January?
When is the sunrise / sunset in January in Pittsburgh?
What is the month with the least sunshine in Pittsburgh?
How long on average sun shines in January in Pittsburgh?
What is the UV index reading in January in Pittsburgh?
Average temperature in January
Pittsburgh, PA
- Average high temperature in January: 33.1°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in January: 21°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in January
Pittsburgh, PA
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in January
Pittsburgh, PA
- Average wind speed in January: 8mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in January
Pittsburgh, PA
- Average humidity in January: 84%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are July and August (73%).
Average rainfall in January
Pittsburgh, PA
- Average rainfall in January: 1.69"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is November (1.54").
Average rainfall days in January
Pittsburgh, PA
- Average rainfall days in January: 8.9 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is January (8.9 days).
Average snowfall in January
Pittsburgh, PA
- Average snowfall in January: 3.31"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Pittsburgh, PA
- Average snowfall days in January: 14.4 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Pittsburgh, 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 18min).
- Average sunshine in January: 2h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in January
Pittsburgh, PA
- Average sunshine days in January: 10.7 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is February (9.6 days).
Average UV index in January
Pittsburgh, PA
- Average UV index in January: 2
The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Pittsburgh, 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 August (Cloud cover 34).
Average visibility in January
Pittsburgh, PA
- Average visibility in January: 5mi
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
Pittsburgh, Pennsylvania, USA
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