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
The coldest time of the year is January, with temperatures averaging a high of 30.9°F (-0.6°C) and a low of 20.1°F (-6.6°C).Humidity
The months with the highest humidity are January and February, with an average relative humidity of 85%.Rainfall
In Rochester, during January, the rain falls for 8.8 days and regularly aggregates up to 1.97" (50mm) of precipitation. In Rochester, during the entire year, the rain falls for 173.9 days and collects up to 30.16" (766mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Rochester, in January, during 16.2 snowfall days, 4.29" (109mm) of snow is typically accumulated. In Rochester, during the entire year, snow falls for 59.3 days and aggregates up to 17.32" (440mm) of snow.Daylight
In January, the average length of the day is 9h and 37min.On the first day of the month, sunrise is at 7:54 am and sunset at 5:10 pm. On the last day of January, sunrise is at 7:41 am and sunset at 5:44 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 3h of sunshine.UV index
In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 2 in January interprets into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Rochester?
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
How many days does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
How high is the UV index in January?
Average temperature in January
Rochester, OH
- Average high temperature in January: 30.9°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in January: 20.1°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in January
Rochester, OH
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Rochester, OH
- Average wind speed in January: 10.7mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).
Average humidity in January
Rochester, OH
- Average humidity in January: 85%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is November (76%).
Average rainfall in January
Rochester, OH
- Average rainfall in January: 1.97"
The wettest month (with the highest rainfall) is June (3.62").
The driest months (with the least rainfall) are February, November and December (1.93").
Average rainfall days in January
Rochester, OH
- Average rainfall days in January: 8.8 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in January
Rochester, OH
- Average snowfall in January: 4.29"
The month with the highest snowfall is February (4.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Rochester, OH
- Average snowfall days in January: 16.2 days
The month with the highest number of snowfall days is January (16.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Rochester, OH
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 3h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in January
Rochester, OH
- Average sunshine days in January: 9.3 days
The month with the most sunshine days is September (12.9 days).
The month with the least sunshine days is February (8.8 days).
Average UV index in January
Rochester, OH
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Rochester, OH
- Average cloud cover in January: 69
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in January
Rochester, OH
- 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, Ohio, USA
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