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 month that records the lowest temperatures, with averages ranging from a high of 31.5°F (-0.3°C) to a low of 19.2°F (-7.1°C).Humidity
With an average relative humidity of 86%, January is the most humid month.Rainfall
In January, the rain falls for 7.7 days. Throughout January, 1.26" (32mm) of precipitation is accumulated. Throughout the year, there are 148.8 rainfall days, and 18.9" (480mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Mount Vernon, in January, snow falls for 10 days, with typically accumulated 1.46" (37mm) of snow. Throughout the year, there are 32.5 snowfall days, and 5.63" (143mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 41min.On the first day of the month, sunrise is at 7:52 am and sunset at 5:13 pm. On the last day of January, sunrise is at 7:40 am and sunset at 5:46 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 3.2h of sunshine.UV index
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 2 in January translates into this advice:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Consider this! The reflection from snow 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 is the coldest month?
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
How much does it rain in January?
How much does it snow in January?
How many hours of daylight does Mount Vernon have in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What is the month with the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Mount Vernon, OH
- Average high temperature in January: 31.5°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in January: 19.2°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 (19.2°F).
Average pressure in January
Mount Vernon, OH
- Average pressure in January: 30.12"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Mount Vernon, OH
- Average wind speed in January: 10.1mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in January
Mount Vernon, OH
- Average humidity in January: 86%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are March, April and November (78%).
Average rainfall in January
Mount Vernon, OH
- Average rainfall in January: 1.26"
The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days in January
Mount Vernon, OH
- Average rainfall days in January: 7.7 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in January
Mount Vernon, OH
- Average snowfall in January: 1.46"
The month with the highest snowfall is February (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Mount Vernon, OH
- Average snowfall days in January: 10 days
The month with the highest number of snowfall days is January (10 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 Vernon, OH
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 3h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in January
Mount Vernon, OH
- Average sunshine days in January: 16 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in January
Mount Vernon, OH
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in January
Mount Vernon, OH
- Average cloud cover in January: 67
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in January
Mount Vernon, OH
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, July, August and September (5mi).
Mount Vernon, Ohio, USA
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