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
With average temperatures fluctuating between a high of 25.7°F (-3.5°C) and a low of 14.4°F (-9.8°C), January stands out as the coldest month.Humidity
With an average relative humidity of 86%, January is the most humid month.Rainfall
In Rochester, in January, it is raining for 6.6 days, with typically 1.57" (40mm) of accumulated precipitation. In Rochester, during the entire year, the rain falls for 158.7 days and collects up to 29.88" (759mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall is January, when snow falls for 14.9 days and typically aggregates up to 5.43" (138mm) of snow.Daylight
In Rochester, the average length of the day in January is 9h and 28min.On the first day of the month, sunrise is at 7:23 am and sunset at 4:29 pm. On the last day of January, sunrise is at 7:08 am and sunset at 5:04 pm CST.
Sunshine
With an average of 3.7h of sunshine, January has the least sunshine of the year.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 1 in January converts into the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is it in Rochester in January?
What is the most humid month?
What is the average humidity in January?
How much does it rain in January?
When does it snow the most?
How many days does it snow in January?
How many hours of daylight does Rochester have in January?
When are sunrise and sunset in January?
What is the month with the least sunshine in Rochester?
How many hours of sunshine does Rochester have in January?
When is the lowest UV index in Rochester?
What is the UV index reading in January in Rochester?
Average temperature in January
Rochester, WI
- Average high temperature in January: 25.7°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (25.7°F).
- Average low temperature in January: 14.4°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in January
Rochester, WI
- Average pressure in January: 30.1"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Rochester, WI
- Average wind speed in January: 10.2mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in January
Rochester, WI
- Average humidity in January: 86%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April, October and November (77%).
Average rainfall in January
Rochester, WI
- Average rainfall in January: 1.57"
The wettest month (with the highest rainfall) is June (3.78").
The driest month (with the least rainfall) is February (1.54").
Average rainfall days in January
Rochester, WI
- Average rainfall days in January: 6.6 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in January
Rochester, WI
- Average snowfall in January: 5.43"
The month with the highest snowfall is January (5.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Rochester, WI
- Average snowfall days in January: 14.9 days
The month with the highest number of snowfall days is January (14.9 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, WI
- Average daylight in January: 9h and 3min
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 6min).
- Average sunshine in January: 3h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in January
Rochester, WI
- Average sunshine days in January: 11.9 days
The month with the most sunshine days is November (16 days).
The month with the least sunshine days is June (9 days).
Average UV index in January
Rochester, WI
- Average UV index in January: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Rochester, WI
- Average cloud cover in January: 62
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in January
Rochester, WI
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Rochester, Wisconsin, USA
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