December weather forecastCarter Lake, IA
December
Weather in December
December, the first month of the winter in Carter Lake, is also a wintry month, with an average temperature fluctuating between 21.9°F (-5.6°C) and 34.3°F (1.3°C).Temperature
Carter Lake's weather in December is marked by a clear decrease in the average high-temperature, moving down from November's frosty 48.9°F (9.4°C) to an icy 34.3°F (1.3°C). During December, the temperature in Carter Lake is averaged to a low of 21.9°F (-5.6°C) at night.Humidity
In Carter Lake, the average relative humidity in December is 77%.Rainfall
In December, the rain falls for 4.9 days. Throughout December, 1.3" (33mm) of precipitation is accumulated. In Carter Lake, Iowa, during the entire year, the rain falls for 122.5 days and collects up to 22.52" (572mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Carter Lake, Iowa, in December, snow falls for 6.9 days, with typically accumulated 2.05" (52mm) of snow. In Carter Lake, during the entire year, snow falls for 31.6 days and aggregates up to 9.65" (245mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December in Carter Lake, sunrise is at 7:30 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 5:04 pm CST.
Sunshine
In December, the average sunshine in Carter Lake, Iowa, is 5h.UV index
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Carter Lake. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Carter Lake, IA
- Average high temperature in December: 34.3°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in December: 21.9°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure in December
Carter Lake, 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 (29.86"Hg).
Average wind speed in December
Carter Lake, IA
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in December
Carter Lake, IA
- Average humidity in December: 77%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is October (66%).
Average rainfall in December
Carter Lake, IA
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is June (3.86").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in December
Carter Lake, IA
- Average rainfall days in December: 4.9 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (3 days).
Average snowfall in December
Carter Lake, IA
- Average snowfall in December: 2.05"
The month with the highest snowfall is February (2.56").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Carter Lake, IA
- Average snowfall days in December: 6.9 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Carter Lake, IA
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in December
Carter Lake, IA
- Average sunshine days in December: 20.6 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in December
Carter Lake, IA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in December
Carter Lake, IA
- Average cloud cover in December: 45
The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
Carter Lake, 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).
