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
With an average high-temperature of 33.6°F (0.9°C) and an average low-temperature of 20.8°F (-6.2°C), January is the coldest month.Humidity
In Washington, the average relative humidity in January is 84%.Rainfall
January and November are months with the least rain in Washington when the rain falls for 7.5 days and typically aggregates up to 0.94" (24mm) of rain.Snowfall
Months with snowfall in Washington are January through May, October through December. In Washington, in January, during 9.8 snowfall days, 1.06" (27mm) of snow is typically accumulated. Throughout the year, in Washington, there are 33.5 snowfall days, and 4.88" (124mm) of snow is accumulated.Daylight
The average length of the day in January in Washington is 9h and 42min.On the first day of the month, sunrise is at 7:43 am and sunset at 5:05 pm. On the last day of January, in Washington, Pennsylvania, sunrise is at 7:30 am and sunset at 5:38 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 3h of sunshine.UV index
In Washington, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In January, the average maximum UV index of 2 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
FAQ
What is the coldest month in Washington?
What is the temperature in January in Washington?
What is the average humidity in January in Washington?
What is the driest month in Washington?
How many days does it rain in January in Washington?
How much does it snow in Washington in January?
What is the average length of the day in January in Washington?
When is the sunrise / sunset in January in Washington?
What is the month with the least sunshine in Washington?
How many hours of sunshine does Washington have in January?
What is the UV index intensity in January in Washington?
Average temperature in January
Washington, PA
- Average high temperature in January: 33.6°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in January: 20.8°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in January
Washington, PA
- Average pressure in January: 30.12"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in January
Washington, PA
- Average wind speed in January: 7.8mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in January
Washington, 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 (77%).
Average rainfall in January
Washington, PA
- Average rainfall in January: 0.94"
The wettest month (with the highest rainfall) is July (1.65").
The driest months (with the least rainfall) are January and November (0.94").
Average rainfall days in January
Washington, PA
- Average rainfall days in January: 7.5 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in January
Washington, PA
- Average snowfall in January: 1.06"
The month with the highest snowfall is February (1.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Washington, PA
- Average snowfall days in January: 9.8 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Washington, PA
- Average daylight in January: 9h and 42min
The month with the longest days is June (Average daylight: 14h and 59min).
The month with the shortest days is December (Average daylight: 9h and 22min).
- Average sunshine in January: 3h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in January
Washington, PA
- Average sunshine days in January: 17.1 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in January
Washington, 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
Washington, PA
- Average cloud cover in January: 68
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in January
Washington, PA
- Average visibility in January: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Weather forecast for your location
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