December weather forecastCleghorn, IA
December
Weather in December
December, the first month of the winter in Cleghorn, is also a subzero cold month, with an average temperature varying between 29.1°F (-1.6°C) and 19°F (-7.2°C).Temperature
A decrease in the average high-temperature marks December, falling from November's frosty 44.1°F (6.7°C) to a freezing cold 29.1°F (-1.6°C). Cleghorn experiences a mean low-temperature of 19°F (-7.2°C) during December.Humidity
In December, the average relative humidity in Cleghorn, Iowa, is 82%.Rainfall
In December, in Cleghorn, Iowa, the rain falls for 4.2 days. Throughout December, 0.94" (24mm) of precipitation is accumulated. Throughout the year, in Cleghorn, there are 117 rainfall days, and 19.84" (504mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, in Cleghorn, it is snowing for 8 days. Throughout December, 1.77" (45mm) of snow is accumulated. In Cleghorn, during the entire year, snow falls for 36.4 days and aggregates up to 10.67" (271mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:34 am and sunset at 4:49 pm. On the last day of December, sunrise is at 7:53 am and sunset at 4:58 pm CST.
Sunshine
In Cleghorn, the average sunshine in December is 4.7h.UV index
In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Cleghorn, IA
- Average high temperature in December: 29.1°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in December: 19°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure in December
Cleghorn, IA
- Average pressure in December: 30.13"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 December
Cleghorn, IA
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in December
Cleghorn, IA
- Average humidity in December: 82%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (68%).
Average rainfall in December
Cleghorn, IA
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is June (3.15").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in December
Cleghorn, IA
- Average rainfall days in December: 4.2 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in December
Cleghorn, IA
- Average snowfall in December: 1.77"
The month with the highest snowfall is February (3.19").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Cleghorn, IA
- Average snowfall days in December: 8 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Cleghorn, IA
- Average daylight in December: 9h and 6min
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 December: 4h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Cleghorn, IA
- Average sunshine days in December: 20.4 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in December
Cleghorn, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Cleghorn, IA
- Average cloud cover in December: 52
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 December
Cleghorn, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
