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
Temperature readings reach their annual highs in January, averaging 22.6°F (-5.2°C) and a minimum average of 10.6°F (-11.9°C).Humidity
With an average relative humidity of 89%, January is the most humid month.Rainfall
In Rio, in January, it is raining for 4.5 days, with typically 1.14" (29mm) of accumulated precipitation. Throughout the year, in Rio, there are 134.5 rainfall days, and 26.97" (685mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is January, when snow falls for 14.4 days and typically aggregates up to 5.16" (131mm) of snow.Daylight
In Rio, the average length of the day in January is 9h and 24min.On the first day of January, sunrise is at 7:29 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:06 pm CST.
Sunshine
With an average of 3.2h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.Note: In January, the maximum UV index of 1 transforms into these recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. It's recommended to limit sun exposure when its radiation is at its peak during midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
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?
What is the snowiest month?
How many days does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Rio have in January?
What is the month with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Rio, WI
- Average high temperature in January: 22.6°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 (22.6°F).
- Average low temperature in January: 10.6°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in January
Rio, WI
- Average pressure in January: 30.11"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Rio, WI
- Average wind speed in January: 9.6mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in January
Rio, WI
- Average humidity in January: 89%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).
Average rainfall in January
Rio, WI
- Average rainfall in January: 1.14"
The wettest month (with the highest rainfall) is June (3.54").
The driest month (with the least rainfall) is February (1.1").
Average rainfall days in January
Rio, WI
- Average rainfall days in January: 4.5 days
The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in January
Rio, WI
- Average snowfall in January: 5.16"
The month with the highest snowfall is January (5.16").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Rio, WI
- Average snowfall days in January: 14.4 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Rio, WI
- 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: 3h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in January
Rio, WI
- Average sunshine days in January: 14.3 days
The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in January
Rio, WI
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in January
Rio, WI
- Average cloud cover in January: 66
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in January
Rio, WI
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, July, August, September and December (5mi).
Rio, Wisconsin, USA
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