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
December's arrival coincides with a drop in the average high-temperature, decreasing from November's frosty 47.5°F (8.6°C) to an icy 35.4°F (1.9°C). In the month of December, the average temperature dips to a freezing cold 24.3°F (-4.3°C) during the night.Humidity
The average relative humidity in December is 80%.Rainfall
February and December are months with the least rain in Wyman when the rain falls for 3.4 days and typically aggregates up to 0.28" (7mm) of rain.Snowfall
January through April, October through December are months with snowfall. In Wyman, in December, during 3.7 snowfall days, 0.12" (3mm) of snow is typically accumulated. In Wyman, during the entire year, snow falls for 20.4 days and aggregates up to 3.11" (79mm) 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 the month, sunrise is at 7:12 am and sunset at 4:37 pm. On the last day of December, sunrise is at 7:31 am and sunset at 4:47 pm CST.
Sunshine
In December, the average sunshine in Wyman, Iowa, is 4.7h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
How cold is it in Wyman in December?
What is the average humidity in December in Wyman?
What is the driest month in Wyman?
How many days does it rain in December in Wyman?
How many days does it snow in December in Wyman?
What is the month with the shortest days in Wyman?
What is the average length of the day in December in Wyman?
When are sunrise and sunset in December in Wyman?
How long on average sun shines in December in Wyman?
What is the month with the lowest UV index in Wyman?
What is the UV index intensity in December in Wyman?
Average temperature in December
Wyman, IA
- Average high temperature in December: 35.4°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 24.3°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in December
Wyman, IA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Wyman, IA
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in December
Wyman, IA
- Average humidity in December: 80%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Wyman, IA
- Average rainfall in December: 0.28"
The wettest month (with the highest rainfall) is May (1.1").
The driest months (with the least rainfall) are February and December (0.28").
Average rainfall days in December
Wyman, IA
- Average rainfall days in December: 3.4 days
The month with the highest number of rainy days is June (11 days).
The month with the least rainy days is January (3 days).
Average snowfall in December
Wyman, IA
- Average snowfall in December: 0.12"
The month with the highest snowfall is January (1.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Wyman, IA
- Average snowfall days in December: 3.7 days
The month with the highest number of snowfall days is January (6.7 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
Wyman, IA
- Average daylight in December: 9h and 2min
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 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).
Average sunshine days in December
Wyman, IA
- Average sunshine days in December: 25.3 days
The month with the most sunshine days is December (25.3 days).
The month with the least sunshine days is June (14.8 days).
Average UV index in December
Wyman, IA
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Wyman, IA
- Average cloud cover in December: 52
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Wyman, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Wyman, Iowa, USA
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