December weather forecastCreston, IA
December
Weather in December
December, the first month of the winter in Creston, is still a cold month, with an average temperature fluctuating between 34.3°F (1.3°C) and 22.3°F (-5.4°C).Temperature
The arrival of December signals a shift in temperature, down from a chilly 47.3°F (8.5°C) in November to a wintry 34.3°F (1.3°C). Creston's nighttime temperature in December falls to an average of 22.3°F (-5.4°C).Humidity
In Creston, Iowa, the average relative humidity in December is 79%.Rainfall
In Creston, in December, it is raining for 5 days, with typically 0.79" (20mm) of accumulated precipitation. In Creston, during the entire year, the rain falls for 127.7 days and collects up to 23.39" (594mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 6.5 days. Throughout December, 1.69" (43mm) of snow is accumulated. Throughout the year, there are 32.6 snowfall days, and 12.01" (305mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:23 am and sunset at 4:49 pm. On the last day of December, sunrise is at 7:42 am and sunset at 4:59 pm CST.
Sunshine
In Creston, the average sunshine in December is 4.8h.UV index
The average daily maximum UV index in December in Creston is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 2 during December translates into these guidelines:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Creston, IA
- Average high temperature in December: 34.3°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in December: 22.3°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 (15.8°F).
Average pressure in December
Creston, 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 (29.88"Hg).
Average wind speed in December
Creston, IA
- Average wind speed in December: 10.3mph
The windiest months (with the highest average wind speed) are January and February (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in December
Creston, IA
- Average humidity in December: 79%
The months with the highest relative humidity are January and June (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Creston, IA
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is June (4.17").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in December
Creston, IA
- Average rainfall days in December: 5 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (3.7 days).
Average snowfall in December
Creston, IA
- Average snowfall in December: 1.69"
The month with the highest snowfall is January (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Creston, IA
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Creston, 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: 4h and 48min
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 24min).
Average sunshine days in December
Creston, IA
- Average sunshine days in December: 19.4 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in December
Creston, IA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Creston, IA
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in December
Creston, 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).
