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, with its high-temperature average of 29.7°F (-1.3°C) and a low-temperature average of 17.4°F (-8.1°C), is the coldest month in Rochester.Humidity
The months with the highest humidity in Rochester are January and February, with an average relative humidity of 82%.Rainfall
In January, in Rochester, the rain falls for 7.6 days. Throughout January, 2.28" (58mm) of precipitation is accumulated. In Rochester, during the entire year, the rain falls for 143.1 days and collects up to 29.06" (738mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Rochester, in January, snow falls for 10.4 days, with typically accumulated 6.26" (159mm) of snow. Throughout the year, in Rochester, there are 40 snowfall days, and 27.8" (706mm) of snow is accumulated.Daylight
The average length of the day in January in Rochester, New Hampshire, is 9h and 25min.On the first day of January in Rochester, sunrise is at 7:16 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 4:53 pm EST.
Sunshine
In January, the average sunshine is 5h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Frequently asked questions
What is the coldest month in Rochester?
How cold is January in Rochester?
What are the most humid months in Rochester?
What is the average humidity in January in Rochester?
How much does it rain in Rochester in January?
How many days does it snow in January in Rochester?
How many hours of daylight does Rochester have in January?
What time are sunrise and sunset in January in Rochester?
How long on average sun shines in January in Rochester?
What is the month with the lowest UV index in Rochester?
What is the UV index reading in January in Rochester?
Average temperature in January
Rochester, NH
- Average high temperature in January: 29.7°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 (29.7°F).
- Average low temperature in January: 17.4°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure in January
Rochester, NH
- Average pressure in January: 29.99"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Rochester, NH
- Average wind speed in January: 9.3mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in January
Rochester, NH
- Average humidity in January: 82%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is April (75%).
Average rainfall in January
Rochester, NH
- Average rainfall in January: 2.28"
The wettest months (with the highest rainfall) are October and December (3.11").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in January
Rochester, NH
- Average rainfall days in January: 7.6 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in January
Rochester, NH
- Average snowfall in January: 6.26"
The month with the highest snowfall is December (6.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Rochester, NH
- Average snowfall days in January: 10.4 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Rochester, NH
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 5h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in January
Rochester, NH
- Average sunshine days in January: 16.3 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is April (13.3 days).
Average UV index in January
Rochester, NH
- Average UV index in January: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Rochester, NH
- Average cloud cover in January: 45
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in January
Rochester, NH
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).
Rochester, New Hampshire, USA
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