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 month of January sees the lowest average temperatures, reaching 22.8°F (-5.1°C) at the peak and 10.4°F (-12°C) at the low.Humidity
With an average relative humidity of 89%, January is the most humid month.Rainfall
January is the month with the least rainfall. Rain falls for 4.3 days and accumulates 0.94" (24mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Duncan. In January, in Duncan, it is snowing for 13.3 days. Throughout January, 4.72" (120mm) of snow is accumulated. Throughout the year, there are 51.2 snowfall days, and 20.91" (531mm) of snow is accumulated.Daylight
The average length of the day in January in Duncan, Iowa, is 9h and 26min.On the first day of the month, sunrise is at 7:46 am and sunset at 4:50 pm. On the last day of January, in Duncan, sunrise is at 7:31 am and sunset at 5:25 pm CST.
Sunshine
With an average of 3.7h of sunshine, January has the least sunshine of the year in Duncan.UV index
The months with the lowest UV index in Duncan are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 1 in January translates into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Experience reduced UV exposure by about half when donning a wide-brim hat. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
What is the coldest month in Duncan?
How cold is January in Duncan?
What is the most humid month in Duncan?
What is the average humidity in January in Duncan?
What is the driest month in Duncan?
How many days does it rain in January in Duncan?
How much does it snow in Duncan in January?
How many hours of daylight does Duncan have in January?
What time are sunrise and sunset in January in Duncan?
What is the month with the least sunshine in Duncan?
How many hours of sunshine does Duncan have in January?
What are the months with the lowest UV index in Duncan?
What is the UV index intensity in January in Duncan?
Average temperature in January
Duncan, IA
- Average high temperature in January: 22.8°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in January: 10.4°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (10.4°F).
Average pressure in January
Duncan, IA
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in January
Duncan, IA
- Average wind speed in January: 10.9mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in January
Duncan, IA
- Average humidity in January: 89%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (69%).
Average rainfall in January
Duncan, IA
- Average rainfall in January: 0.94"
The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in January
Duncan, IA
- Average rainfall days in January: 4.3 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in January
Duncan, IA
- Average snowfall in January: 4.72"
The month with the highest snowfall is February (5.71").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Duncan, IA
- Average snowfall days in January: 13.3 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Duncan, IA
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 3h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in January
Duncan, IA
- Average sunshine days in January: 16.4 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in January
Duncan, IA
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Duncan, IA
- Average cloud cover in January: 62
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in January
Duncan, IA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Duncan, Iowa, USA
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