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 is the coldest month in Waterloo, exhibiting average temperatures of 24.3°F (-4.3°C) at the peak and 12°F (-11.1°C) at the base.Humidity
With an average relative humidity of 87%, January is the most humid month in Waterloo.Rainfall
The months with the least rainfall are January and February Rain falls for 4.1 days and accumulates 1.02" (26mm) of rain.Snowfall
Months with snowfall are January through May, October through December. January is the month with the most snowfall. Snow falls for 11.5 days and accumulates 4.21" (107mm) of snow.Daylight
The average length of the day in January in Waterloo is 9h and 29min.On the first day of January, sunrise is at 7:38 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:21 pm CST.
Sunshine
January has the least sunshine of the year in Waterloo, with an average of 3.8h of sunshine.UV index
The average daily maximum UV index in January in Waterloo is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in January interprets into the following recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Waterloo?
How cold is January in Waterloo?
What is the most humid month in Waterloo?
What is the average humidity in January in Waterloo?
What is the driest month in Waterloo?
How much does it rain in Waterloo in January?
When does it snow the most in Waterloo?
How much does it snow in Waterloo in January?
What is the average length of the day in January in Waterloo?
When are sunrise and sunset in January in Waterloo?
What is the month with the least sunshine in Waterloo?
How many hours of sunshine does Waterloo have in January?
How high is the UV index in January in Waterloo?
Average temperature in January
Waterloo, IA
- Average high temperature in January: 24.3°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in January: 12°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure in January
Waterloo, IA
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in January
Waterloo, IA
- Average wind speed in January: 10.5mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in January
Waterloo, IA
- Average humidity in January: 87%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Waterloo, IA
- Average rainfall in January: 1.02"
The wettest month (with the highest rainfall) is June (4.29").
The driest months (with the least rainfall) are January and February (1.02").
Average rainfall days in January
Waterloo, IA
- Average rainfall days in January: 4.1 days
The month with the highest number of rainy days is June (18.1 days).
The month with the least rainy days is February (4 days).
Average snowfall in January
Waterloo, IA
- Average snowfall in January: 4.21"
The month with the highest snowfall is January (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Waterloo, IA
- Average snowfall days in January: 11.5 days
The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Waterloo, IA
- Average daylight in January: 9h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 3h and 5min
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 48min).
Average sunshine days in January
Waterloo, IA
- Average sunshine days in January: 16.1 days
The month with the most sunshine days is October (17.8 days).
The month with the least sunshine days is June (10 days).
Average UV index in January
Waterloo, IA
- Average UV index in January: 2
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Waterloo, IA
- Average cloud cover in January: 60
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in January
Waterloo, IA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Waterloo, Iowa, USA
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