Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
West Alton's December weather shows a moderate shift in high-temperatures, falling from November's cool 52.2°F (11.2°C) to an icy 41.2°F (5.1°C). An average low-temperature of 29.5°F (-1.4°C) is observed during December nights.Humidity
The average relative humidity in December in West Alton is 77%.Rainfall
In West Alton, in December, it is raining for 6.3 days, with typically 0.94" (24mm) of accumulated precipitation. In West Alton, during the entire year, the rain falls for 128.3 days and collects up to 18.9" (480mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in West Alton. In West Alton, during December, snow falls for 3.6 days and regularly aggregates up to 0.55" (14mm) of snow. Throughout the year, in West Alton, there are 17.9 snowfall days, and 3.58" (91mm) of snow is accumulated.Daylight
December has the shortest days of the year in West Alton, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:01 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:49 pm CST.
Sunshine
The average sunshine in December is 4.9h.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 estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
How cold is December in West Alton?
What is the average humidity in December in West Alton?
How much does it rain in West Alton in December?
How much does it snow in West Alton in December?
What is the month with the shortest days in West Alton?
What is the average length of the day in December in West Alton?
When are sunrise and sunset in December in West Alton?
How long on average sun shines in December in West Alton?
What is the month with the lowest UV index in West Alton?
What is the UV index reading in December in West Alton?
Average temperature in December
West Alton, MO
- Average high temperature in December: 41.2°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in December: 29.5°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in December
West Alton, MO
- 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 (29.92"Hg).
Average wind speed in December
West Alton, MO
- Average wind speed in December: 9mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in December
West Alton, MO
- Average humidity in December: 77%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
West Alton, MO
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days in December
West Alton, MO
- Average rainfall days in December: 6.3 days
The month with the highest number of rainy days is July (15.4 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in December
West Alton, MO
- Average snowfall in December: 0.55"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
West Alton, MO
- Average snowfall days in December: 3.6 days
The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
West Alton, MO
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).
Average sunshine days in December
West Alton, 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 (12.6 days).
Average UV index in December
West Alton, MO
- 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, November and December (UV index 2).
Average cloud cover in December
West Alton, MO
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
West Alton, 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).
West Alton, Missouri, USA
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