January weather forecastMonroeville, PA
January
Weather in January
January, the same as December, is an icy winter month in Monroeville, Pennsylvania, with an average temperature fluctuating between 20.7°F (-6.3°C) and 33.1°F (0.6°C).Temperature
Monroeville's coldest month, January, registers temperatures that range from a high of 33.1°F (0.6°C) to a low of 20.7°F (-6.3°C).Humidity
In Monroeville, Pennsylvania, the average relative humidity in January is 84%.Rainfall
In Monroeville, during January, the rain falls for 7.7 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Monroeville, during the entire year, the rain falls for 151 days and collects up to 20.39" (518mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Monroeville, during January, snow falls for 9.7 days and regularly aggregates up to 2.28" (58mm) of snow. In Monroeville, during the entire year, snow falls for 35.4 days and aggregates up to 10.35" (263mm) of snow.Daylight
In January, the average length of the day is 9h and 41min.On the first day of January, sunrise is at 7:42 am and sunset at 5:03 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:35 pm EST.
Sunshine
With an average of 2.9h of sunshine, January has the least sunshine of the year.UV index
In Monroeville, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: A daily maximum UV index of 2 in January translates into the following instructions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. 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
Average temperature in January
Monroeville, PA
- Average high temperature in January: 33.1°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in January: 20.7°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in January
Monroeville, 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
Monroeville, PA
- Average wind speed in January: 8.1mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in January
Monroeville, PA
- Average humidity in January: 84%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (76%).
Average rainfall in January
Monroeville, PA
- Average rainfall in January: 1.1"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is November (1.06").
Average rainfall days in January
Monroeville, PA
- Average rainfall days in January: 7.7 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in January
Monroeville, PA
- Average snowfall in January: 2.28"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Monroeville, PA
- Average snowfall days in January: 9.7 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Monroeville, PA
- Average daylight in January: 9h and 42min
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 54min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in January
Monroeville, PA
- Average sunshine days in January: 16.7 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in January
Monroeville, PA
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Monroeville, PA
- Average cloud cover in January: 69
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in January
Monroeville, PA
- Average visibility in January: 5mi
The months with the highest visibility are April, June, August and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September, October and December (5mi).
