January weather forecastJamestown, PA
January
Weather in January
January, the same as December, in Jamestown, Pennsylvania, is another subzero cold winter month, with temperature in the range of an average low of 18.1°F (-7.7°C) and an average high of 30.6°F (-0.8°C).Temperature
January stands out as Jamestown's coldest month, with an average high-temperature of 30.6°F (-0.8°C) and a low-temperature of 18.1°F (-7.7°C).Humidity
In Jamestown, the average relative humidity in January is 88%.Rainfall
In January, in Jamestown, the rain falls for 8 days. Throughout January, 1.89" (48mm) of precipitation is accumulated. In Jamestown, during the entire year, the rain falls for 167.1 days and collects up to 24.25" (616mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. January is the month with the most snowfall. Snow falls for 19.9 days and accumulates 6.38" (162mm) of snow.Daylight
In January, the average length of the day is 9h and 35min.On the first day of the month, sunrise is at 7:48 am and sunset at 5:02 pm. On the last day of January, sunrise is at 7:34 am and sunset at 5:35 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 2.4h of sunshine.UV index
The average daily maximum UV index in January in Jamestown is 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 2 during January leads to these instructions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Jamestown, PA
- Average high temperature in January: 30.6°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in January: 18.1°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in January
Jamestown, PA
- Average pressure in January: 30.09"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
Jamestown, 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 July (5.1mph).
Average humidity in January
Jamestown, PA
- Average humidity in January: 88%
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are May, June and July (79%).
Average rainfall in January
Jamestown, PA
- Average rainfall in January: 1.89"
The wettest month (with the highest rainfall) is October (2.52").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in January
Jamestown, PA
- Average rainfall days in January: 8 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (8 days).
Average snowfall in January
Jamestown, PA
- Average snowfall in January: 6.38"
The month with the highest snowfall is January (6.38").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Jamestown, PA
- Average snowfall days in January: 19.9 days
The month with the highest number of snowfall days is January (19.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Jamestown, PA
- Average daylight in January: 9h and 36min
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: 2h and 24min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in January
Jamestown, PA
- Average sunshine days in January: 7.2 days
The month with the most sunshine days is August (12.6 days).
The month with the least sunshine days is February (6.3 days).
Average UV index in January
Jamestown, PA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Jamestown, PA
- Average cloud cover in January: 76
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in January
Jamestown, PA
- Average visibility in January: 4mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).
