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
Mount Heron experiences its lowest average temperatures in January, reaching a peak of 38.8°F (3.8°C) and a minimum of 24.4°F (-4.2°C).Humidity
In January, the average relative humidity is 80%.Rainfall
In January, the rain falls for 9.3 days. Throughout January, 1.65" (42mm) of precipitation is accumulated. Throughout the year, there are 155.9 rainfall days, and 23.31" (592mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Mount Heron, in January, during 9 snowfall days, 3.74" (95mm) of snow is typically accumulated. Throughout the year, there are 37.2 snowfall days, and 18.03" (458mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 57min.On the first day of the month, sunrise is at 7:41 am and sunset at 5:21 pm. On the last day of January, in Mount Heron, sunrise is at 7:31 am and sunset at 5:51 pm EST.
Sunshine
With an average of 4.3h of sunshine, January has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In January, an average UV index of 2 transforms into the following instructions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Tightly woven clothing, when worn loosely, shields effectively against the Sun. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
Is it cold during January?
What is the average humidity in January in Mount Heron?
How much does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Mount Heron have in January?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Mount Heron, VA
- Average high temperature in January: 38.8°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in January: 24.4°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure in January
Mount Heron, VA
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in January
Mount Heron, VA
- Average wind speed in January: 7.3mph
The windiest months (with the highest average wind speed) are January, February and April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in January
Mount Heron, VA
- Average humidity in January: 80%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is November (76%).
Average rainfall in January
Mount Heron, VA
- Average rainfall in January: 1.65"
The wettest month (with the highest rainfall) is February (2.72").
The driest month (with the least rainfall) is September (1.14").
Average rainfall days in January
Mount Heron, VA
- Average rainfall days in January: 9.3 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in January
Mount Heron, VA
- Average snowfall in January: 3.74"
The month with the highest snowfall is December (4.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Mount Heron, VA
- Average snowfall days in January: 9 days
The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Mount Heron, VA
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 4h and 2min
The months with the most sunshine are June, July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in January
Mount Heron, VA
- Average sunshine days in January: 14.6 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in January
Mount Heron, VA
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Mount Heron, VA
- Average cloud cover in January: 59
The months with the most cloud cover are January and February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in January
Mount Heron, VA
- Average visibility in January: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Mount Heron, Virginia, USA
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