December weather forecastCrystal Lakes, MO
December
Weather in December
December, the first month of the winter in Crystal Lakes, is also a wintry month, with an average temperature ranging between max 39.9°F (4.4°C) and min 26.8°F (-2.9°C).Temperature
Transition into December marks a drop in the average high-temperature, moving from a fresh 51.8°F (11°C) in November to a cold 39.9°F (4.4°C). Crystal Lakes's average low-temperature is measured at a freezing cold 26.8°F (-2.9°C) during December.Humidity
The average relative humidity in December is 76%.Rainfall
In December, the rain falls for 5.8 days. Throughout December, 1.34" (34mm) of precipitation is accumulated. In Crystal Lakes, during the entire year, the rain falls for 138.2 days and collects up to 27.72" (704mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Crystal Lakes, during December, snow falls for 4.5 days and regularly aggregates up to 1.34" (34mm) of snow. Throughout the year, there are 22.8 snowfall days, and 10" (254mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:18 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 5:03 pm CST.
Sunshine
In December, the average sunshine is 5.3h.UV index
The months with the lowest UV index in Crystal Lakes are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: During December, 2 as the daily maximum UV index converts into the following advice:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Crystal Lakes, MO
- Average high temperature in December: 39.9°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in December: 26.8°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Crystal Lakes, MO
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Crystal Lakes, MO
- Average wind speed in December: 8.9mph
The windiest months (with the highest average wind speed) are March and April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Crystal Lakes, MO
- Average humidity in December: 76%
The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are October and November (71%).
Average rainfall in December
Crystal Lakes, MO
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in December
Crystal Lakes, MO
- Average rainfall days in December: 5.8 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in December
Crystal Lakes, MO
- Average snowfall in December: 1.34"
The month with the highest snowfall is February (3.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Crystal Lakes, MO
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Crystal Lakes, MO
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 5h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in December
Crystal Lakes, MO
- Average sunshine days in December: 21 days
The month with the most sunshine days is December (21 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in December
Crystal Lakes, MO
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Crystal Lakes, MO
- Average cloud cover in December: 42
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
Crystal Lakes, MO
- 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).
