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
In Sir Johns Run, the lowest average temperatures are observed in January, with a high of 36°F (2.2°C) and a low of 22.5°F (-5.3°C).Humidity
The average relative humidity in January is 76%.Rainfall
In Sir Johns Run, during January, the rain falls for 9.8 days and regularly aggregates up to 1.77" (45mm) of precipitation. Throughout the year, there are 158.9 rainfall days, and 26.1" (663mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Sir Johns Run, in January, snow falls for 7.5 days, with typically accumulated 3.7" (94mm) of snow. Throughout the year, there are 25.1 snowfall days, and 13.31" (338mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 45min.On the first day of January, sunrise is at 7:33 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:31 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 4.8h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Sir Johns Run. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The average daily UV index of 2 in January transforms into the following instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is January?
What is the average humidity in January?
How many days does it rain in January in Sir Johns Run?
How much does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Sir Johns Run have in January?
What are the months with the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Sir Johns Run, WV
- Average high temperature in January: 36°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in January: 22.5°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in January
Sir Johns Run, WV
- Average pressure in January: 30.11"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
Sir Johns Run, WV
- Average wind speed in January: 7.2mph
The windiest months (with the highest average wind speed) are January and February (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in January
Sir Johns Run, WV
- Average humidity in January: 76%
The months with the highest relative humidity are February, October and December (79%).
The months with the lowest relative humidity are April and July (74%).
Average rainfall in January
Sir Johns Run, WV
- Average rainfall in January: 1.77"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is November (1.69").
Average rainfall days in January
Sir Johns Run, WV
- Average rainfall days in January: 9.8 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in January
Sir Johns Run, WV
- Average snowfall in January: 3.7"
The month with the highest snowfall is February (3.9").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Sir Johns Run, WV
- Average snowfall days in January: 7.5 days
The month with the highest number of snowfall days is January (7.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Sir Johns Run, WV
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in January
Sir Johns Run, WV
- Average sunshine days in January: 16.2 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in January
Sir Johns Run, WV
- Average UV index in January: 2
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Sir Johns Run, WV
- Average cloud cover in January: 49
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in January
Sir Johns Run, WV
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, June, July and November (6mi).
The months with the lowest visibility are January, May, August, September, October and December (5mi).
Sir Johns Run, West Virginia, USA
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