December weather forecastIatan, MO
December
Weather in December
December, the first month of the winter in Iatan, is also an icy month, with an average temperature ranging between max 40.1°F (4.5°C) and min 26.6°F (-3°C).Temperature
During the transition into December, Iatan observes a decrease in the average high-temperature, falling from a fresh 52.2°F (11.2°C) in November to an icy 40.1°F (4.5°C). Iatan experiences a nighttime temperature average of 26.6°F (-3°C) during December.Humidity
The average relative humidity in December in Iatan is 74%.Rainfall
In December, the rain falls for 5.8 days. Throughout December, 1.06" (27mm) of precipitation is accumulated. Throughout the year, there are 130.5 rainfall days, and 26.38" (670mm) of precipitation is accumulated.Snowfall
Months with snowfall in Iatan, Missouri, are January through May, October through December. In Iatan, during December, snow falls for 3.1 days and regularly aggregates up to 0.91" (23mm) of snow. In Iatan, during the entire year, snow falls for 17.5 days and aggregates up to 7.09" (180mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:21 am and sunset at 4:56 pm. On the last day of December, in Iatan, Missouri, sunrise is at 7:40 am and sunset at 5:06 pm CST.
Sunshine
The average sunshine in December in Iatan, Missouri, is 5.4h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In December, a daily UV index of 2 turns into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take to heart! Snow reflection can almost magnify 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
Iatan, MO
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in December: 26.6°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in December
Iatan, 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 (29.88"Hg).
Average wind speed in December
Iatan, MO
- Average wind speed in December: 9.3mph
The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in December
Iatan, MO
- Average humidity in December: 74%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall in December
Iatan, MO
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days in December
Iatan, MO
- Average rainfall days in December: 5.8 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in December
Iatan, MO
- Average snowfall in December: 0.91"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Iatan, MO
- Average snowfall days in December: 3.1 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Iatan, 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 24min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in December
Iatan, MO
- Average sunshine days in December: 21.7 days
The month with the most sunshine days is January (22 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in December
Iatan, 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
Iatan, MO
- Average cloud cover in December: 41
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
Iatan, 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).
