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, exhibiting average temperatures of 44.2°F (6.8°C) at the peak and 29.5°F (-1.4°C) at the base.Humidity
The average relative humidity in January is 73%.Rainfall
In Dumbarton, in January, during 9.6 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. Throughout the year, there are 151.1 rainfall days, and 26.22" (666mm) of precipitation is accumulated.Snowfall
Months with snowfall in Dumbarton are January through April, November and December. In January, it is snowing for 3.3 days. Throughout January, 1.65" (42mm) of snow is accumulated. Throughout the year, there are 10.5 snowfall days, and 6.42" (163mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 55min.On the first day of the month, sunrise is at 7:24 am and sunset at 5:02 pm. On the last day of January, sunrise is at 7:14 am and sunset at 5:32 pm EST.
Sunshine
In January, the average sunshine in Dumbarton is 5.4h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 2 during January morphs into the following directions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What is the coldest time of year in Dumbarton?
Is January cold in Dumbarton?
What is the average humidity in January in Dumbarton?
How many days does it rain in January in Dumbarton?
How many days does it snow in January in Dumbarton?
How many hours of daylight does Dumbarton have in January?
When is the sunrise / sunset in January in Dumbarton?
How many hours of sunshine does Dumbarton have in January?
What is the month with the lowest UV index in Dumbarton?
What is the UV index intensity in January in Dumbarton?
Average temperature in January
Dumbarton, VA
- Average high temperature in January: 44.2°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (44.2°F).
- Average low temperature in January: 29.5°F
The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).
Average pressure in January
Dumbarton, VA
- 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
Dumbarton, VA
- Average wind speed in January: 6.6mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in January
Dumbarton, VA
- Average humidity in January: 73%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (68%).
Average rainfall in January
Dumbarton, VA
- Average rainfall in January: 1.89"
The wettest month (with the highest rainfall) is August (2.72").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in January
Dumbarton, VA
- Average rainfall days in January: 9.6 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in January
Dumbarton, VA
- Average snowfall in January: 1.65"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Dumbarton, VA
- Average snowfall days in January: 3.3 days
The month with the highest number of snowfall days is February (3.5 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
Dumbarton, 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 36min).
- Average sunshine in January: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in January
Dumbarton, VA
- Average sunshine days in January: 18.4 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in January
Dumbarton, VA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in January
Dumbarton, VA
- Average cloud cover in January: 42
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in January
Dumbarton, VA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Dumbarton, Virginia, USA
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