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 proves to be the coldest month, recording an average maximum temperature of 27.7°F (-2.4°C) and a minimum temperature of 15.3°F (-9.3°C).Humidity
The months with the highest humidity are January and July, with an average relative humidity of 83%.Rainfall
In Sunbury, in January, during 4.3 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. In Sunbury, during the entire year, the rain falls for 136.9 days and collects up to 27.95" (710mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Sunbury. The month with the most snowfall is January, when snow falls for 11.3 days and typically aggregates up to 4.09" (104mm) of snow.Daylight
In Sunbury, the average length of the day in January is 9h and 34min.On the first day of the month, sunrise is at 7:30 am and sunset at 4:43 pm. On the last day of January, in Sunbury, sunrise is at 7:16 am and sunset at 5:17 pm CST.
Sunshine
With an average of 4h of sunshine, January has the least sunshine of the year in Sunbury, Iowa.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A daily maximum UV index of 1 in January translates into the following instructions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. To cut down UV radiation exposure by about half, sport a wide-brim hat. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Sunbury?
How cold is it in Sunbury in January?
What is the most humid month in Sunbury?
What is the average humidity in January in Sunbury?
How many days does it rain in January in Sunbury?
When does it snow the most in Sunbury?
How much does it snow in Sunbury in January?
What is the average length of the day in January in Sunbury?
When are sunrise and sunset in January in Sunbury?
What is the month with the least sunshine in Sunbury?
How long on average sun shines in January in Sunbury?
What are the months with the lowest UV index in Sunbury?
What is the UV index intensity in January in Sunbury?
Average temperature in January
Sunbury, IA
- Average high temperature in January: 27.7°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in January: 15.3°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in January
Sunbury, 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 (29.9"Hg).
Average wind speed in January
Sunbury, IA
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in January
Sunbury, IA
- Average humidity in January: 83%
The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Sunbury, IA
- Average rainfall in January: 1.3"
The wettest month (with the highest rainfall) is May (4.57").
The driest month (with the least rainfall) is February (1.1").
Average rainfall days in January
Sunbury, IA
- Average rainfall days in January: 4.3 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in January
Sunbury, IA
- Average snowfall in January: 4.09"
The month with the highest snowfall is January (4.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Sunbury, IA
- Average snowfall days in January: 11.3 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Sunbury, IA
- Average daylight in January: 9h and 4min
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 0min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in January
Sunbury, IA
- Average sunshine days in January: 16.3 days
The month with the most sunshine days is December (18.4 days).
The months with the least sunshine days are May and June (11.4 days).
Average UV index in January
Sunbury, IA
- 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 and December (UV index 1).
Average cloud cover in January
Sunbury, IA
- Average cloud cover in January: 57
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in January
Sunbury, IA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Sunbury, Iowa, USA
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