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 high temperatures of 25.7°F (-3.5°C) and lows of 14.4°F (-9.8°C), January is the coldest month.Humidity
The most humid month is January, with an average relative humidity of 86%.Rainfall
In Rochester, in January, during 6.6 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. Throughout the year, in Rochester, there are 158.7 rainfall days, and 29.88" (759mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. January is the month with the most snowfall. Snow falls for 14.9 days and accumulates 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 January, sunrise is at 7:23 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:04 pm CST.
Sunshine
January has the least sunshine of the year in Rochester, with an average of 3.7h of sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Rochester. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In January, a daily maximum UV index of 1 leads to the following instructions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Frequently asked questions
What are the coldest months in Rochester?
How cold is it in Rochester in January?
What is the most humid month in Rochester?
What is the average humidity in January in Rochester?
How many days does it rain in January in Rochester?
When does it snow the most in Rochester?
How many days does it snow in January in Rochester?
How many hours of daylight does Rochester have in January?
When are sunrise and sunset in January in Rochester?
What is the month with the least sunshine in Rochester?
How long on average sun shines in January in Rochester?
What are the months with the lowest UV index in Rochester?
How high is the UV index 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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