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, on average, is the coldest month, registering a high temperature of 27°F (-2.8°C) and a low of 14°F (-10°C).Humidity
The most humid month is January, with an average relative humidity of 83%.Rainfall
The month with the least rainfall in Denison is January, when the rain falls for 3.6 days and typically collects 0.71" (18mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Denison, in January, during 10.2 snowfall days, 3.35" (85mm) of snow is typically accumulated. Throughout the year, in Denison, there are 36.8 snowfall days, and 14.53" (369mm) of snow is accumulated.Daylight
In Denison, Iowa, the average length of the day in January is 9h and 32min.On the first day of January in Denison, sunrise is at 7:49 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:34 pm CST.
Sunshine
With an average of 4.2h of sunshine, January has the least sunshine of the year in Denison.UV index
In Denison, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 2 during January translates into the following directions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Denison?
How cold is it in Denison in January?
What is the most humid month in Denison?
What is the average humidity in January in Denison?
What is the driest month in Denison?
How many days does it rain in January in Denison?
How many days does it snow in January in Denison?
What is the average length of the day in January in Denison?
When is the sunrise / sunset in January in Denison?
What is the month with the least sunshine in Denison?
How long on average sun shines in January in Denison?
What is the UV index intensity in January in Denison?
Average temperature in January
Denison, IA
- Average high temperature in January: 27°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in January: 14°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (14°F).
Average pressure in January
Denison, IA
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in January
Denison, IA
- Average wind speed in January: 10.9mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in January
Denison, IA
- Average humidity in January: 83%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are April and October (68%).
Average rainfall in January
Denison, IA
- Average rainfall in January: 0.71"
The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in January
Denison, IA
- Average rainfall days in January: 3.6 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is February (3 days).
Average snowfall in January
Denison, IA
- Average snowfall in January: 3.35"
The month with the highest snowfall is February (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Denison, IA
- Average snowfall days in January: 10.2 days
The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Denison, 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 12min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in January
Denison, IA
- Average sunshine days in January: 18 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in January
Denison, IA
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in January
Denison, IA
- Average cloud cover in January: 55
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in January
Denison, IA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Denison, Iowa, USA
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