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
During the coldest month, January, temperatures average a high of 26.1°F (-3.3°C) and a low of 12.9°F (-10.6°C).Humidity
January and February, with an average relative humidity of 86%, are the most humid months in Alton.Rainfall
In Alton, New Hampshire, in January, during 10 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. Throughout the year, in Alton, New Hampshire, there are 152 rainfall days, and 29.09" (739mm) of precipitation is accumulated.Snowfall
Months with snowfall in Alton are January through May, October through December. In Alton, in January, during 13.2 snowfall days, 7.36" (187mm) of snow is typically accumulated. Throughout the year, there are 58.3 snowfall days, and 38.98" (990mm) of snow is accumulated.Daylight
In Alton, the average length of the day in January is 9h and 24min.On the first day of January, sunrise is at 7:17 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 4:54 pm EST.
Sunshine
The average sunshine in January is 4.9h.UV index
January through March, October through 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 minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In January, a daily UV index of 2 turns into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
What part of the year is the coldest in Alton?
How cold is January in Alton?
What are the most humid months in Alton?
What is the average humidity in January in Alton?
How many days does it rain in January in Alton?
How much does it snow in Alton in January?
What is the average length of the day in January in Alton?
When are sunrise and sunset in January in Alton?
How long on average sun shines in January in Alton?
When is the lowest UV index in Alton?
What is the UV index reading in January in Alton?
Average temperature in January
Alton, NH
- Average high temperature in January: 26.1°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in January: 12.9°F
The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in January
Alton, NH
- Average pressure in January: 30"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Alton, NH
- Average wind speed in January: 7.1mph
The windiest months (with the highest average wind speed) are January and February (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in January
Alton, NH
- Average humidity in January: 86%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (76%).
Average rainfall in January
Alton, NH
- Average rainfall in January: 2.17"
The wettest month (with the highest rainfall) is October (3.19").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in January
Alton, NH
- Average rainfall days in January: 10 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in January
Alton, NH
- Average snowfall in January: 7.36"
The month with the highest snowfall is February (9.84").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Alton, NH
- Average snowfall days in January: 13.2 days
The month with the highest number of snowfall days is January (13.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Alton, NH
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in January
Alton, NH
- Average sunshine days in January: 14.7 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is April (11.4 days).
Average UV index in January
Alton, NH
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in January
Alton, NH
- Average cloud cover in January: 48
The month with the most cloud cover is March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in January
Alton, NH
- Average visibility in January: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are February and September (4mi).
Alton, New Hampshire, USA
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