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
January is the coldest month of the year, registering average temperatures as high as 30.2°F (-1°C) and as low as 17.8°F (-7.9°C).Humidity
In Summerville, the average relative humidity in January is 87%.Rainfall
In January, in Summerville, the rain falls for 7.2 days. Throughout January, 1.54" (39mm) of precipitation is accumulated. In Summerville, during the entire year, the rain falls for 150.5 days and collects up to 22.05" (560mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Summerville. In Summerville, Pennsylvania, in January, snow falls for 18 days, with typically accumulated 4.96" (126mm) of snow. In Summerville, Pennsylvania, during the entire year, snow falls for 72.4 days and aggregates up to 22.28" (566mm) of snow.Daylight
In Summerville, Pennsylvania, the average length of the day in January is 9h and 37min.On the first day of January in Summerville, sunrise is at 7:41 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:31 pm EST.
Sunshine
With an average of 2.5h of sunshine, January has the least sunshine of the year.UV index
The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 2 during January translates into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Frequently asked questions
What are the coldest months in Summerville?
How cold is January in Summerville?
What is the average humidity in January in Summerville?
How much does it rain in Summerville in January?
How many days does it snow in January in Summerville?
What is the average length of the day in January in Summerville?
When is the sunrise / sunset in January in Summerville?
What is the month with the least sunshine in Summerville?
How long on average sun shines in January in Summerville?
How high is the UV index in January in Summerville?
Average temperature in January
Summerville, PA
- Average high temperature in January: 30.2°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in January: 17.8°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in January
Summerville, 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
Summerville, PA
- Average wind speed in January: 8.9mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in January
Summerville, PA
- Average humidity in January: 87%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are June, July and August (78%).
Average rainfall in January
Summerville, PA
- Average rainfall in January: 1.54"
The wettest month (with the highest rainfall) is April (2.56").
The driest month (with the least rainfall) is November (1.26").
Average rainfall days in January
Summerville, PA
- Average rainfall days in January: 7.2 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in January
Summerville, PA
- Average snowfall in January: 4.96"
The month with the highest snowfall is February (5.51").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Summerville, PA
- Average snowfall days in January: 18 days
The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Summerville, 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 18min).
- Average sunshine in January: 2h and 3min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in January
Summerville, PA
- Average sunshine days in January: 10.3 days
The month with the most sunshine days is November (15.3 days).
The month with the least sunshine days is February (8.1 days).
Average UV index in January
Summerville, PA
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Summerville, PA
- Average cloud cover in January: 76
The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in January
Summerville, PA
- Average visibility in January: 5mi
The month with the highest visibility is April (6mi).
The month with the lowest visibility is February (4mi).
Summerville, Pennsylvania, USA
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