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 Alton's coldest month, registering average high temperatures of 45.5°F (7.5°C) and lows of 30.4°F (-0.9°C).Humidity
In January, the average relative humidity in Alton, Virginia, is 73%.Rainfall
In Alton, during January, the rain falls for 10.1 days and regularly aggregates up to 2.48" (63mm) of precipitation. In Alton, during the entire year, the rain falls for 157.9 days and collects up to 29.57" (751mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Alton. January is the month with the most snowfall in Alton. Snow falls for 3.1 days and accumulates 2.48" (63mm) of snow.Daylight
The average length of the day in January is 10h and 0min.On the first day of January, sunrise is at 7:28 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 5:40 pm EST.
Sunshine
In January, the average sunshine in Alton is 5.6h.UV index
The months with the lowest UV index in Alton are January, February and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: In January, the average maximum UV index of 2 translates into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Alton?
What is the temperature in January in Alton?
What is the average humidity in January in Alton?
How many days does it rain in January in Alton?
When does it snow the most in Alton?
How much does it snow in Alton in January?
How many hours of daylight does Alton have in January?
What time are sunrise and sunset in January in Alton?
How many hours of sunshine does Alton have in January?
What are the months with the lowest UV index in Alton?
What is the UV index reading in January in Alton?
Average temperature in January
Alton, VA
- Average high temperature in January: 45.5°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (45.5°F).
- Average low temperature in January: 30.4°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).
Average pressure in January
Alton, VA
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in January
Alton, VA
- Average wind speed in January: 6.7mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in January
Alton, VA
- Average humidity in January: 73%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (69%).
Average rainfall in January
Alton, VA
- Average rainfall in January: 2.48"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in January
Alton, VA
- Average rainfall days in January: 10.1 days
The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is November (9.2 days).
Average snowfall in January
Alton, VA
- Average snowfall in January: 2.48"
The month with the highest snowfall is January (2.48").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Alton, VA
- Average snowfall days in January: 3.1 days
The months with the highest number of snowfall days are January and February (3.1 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
Alton, VA
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 5h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in January
Alton, VA
- Average sunshine days in January: 18 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in January
Alton, 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
Alton, VA
- Average cloud cover in January: 39
The month with the most cloud cover is March (Cloud cover 43).
The months with the least cloud cover are June and July (Cloud cover 31).
Average visibility in January
Alton, VA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Alton, Virginia, USA
Weather forecast for your location
2. Allow the app to use your location