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
The onset of December is marked by a decrease in temperature, transitioning from a frosty 45.3°F (7.4°C) in November to a wintry 33.1°F (0.6°C). During December, the average low-temperature is recorded at a freezing cold 22.3°F (-5.4°C).Humidity
In December, the average relative humidity in Mechanicsville, Iowa, is 81%.Rainfall
In Mechanicsville, during December, the rain falls for 6.8 days and regularly aggregates up to 1.57" (40mm) of precipitation. In Mechanicsville, during the entire year, the rain falls for 147.9 days and collects up to 31.57" (802mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Mechanicsville, in December, during 9.5 snowfall days, 3.11" (79mm) of snow is typically accumulated. Throughout the year, in Mechanicsville, there are 44 snowfall days, and 18.35" (466mm) of snow is accumulated.Daylight
December has the shortest days of the year in Mechanicsville, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 7:13 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:44 pm CST.
Sunshine
In Mechanicsville, the average sunshine in December is 4.3h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 1 transforms into these recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
How cold is it in Mechanicsville in December?
What is the average humidity in December in Mechanicsville?
How many days does it rain in December in Mechanicsville?
How many days does it snow in December in Mechanicsville?
What is the month with the shortest days in Mechanicsville?
How many hours of daylight does Mechanicsville have in December?
When are sunrise and sunset in December in Mechanicsville?
How long on average sun shines in December in Mechanicsville?
When is the lowest UV index in Mechanicsville?
How high is the UV index in December in Mechanicsville?
Average temperature in December
Mechanicsville, IA
- Average high temperature in December: 33.1°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in December: 22.3°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (14.2°F).
Average pressure in December
Mechanicsville, 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
Mechanicsville, IA
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Mechanicsville, IA
- Average humidity in December: 81%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Mechanicsville, IA
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is May (5").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days in December
Mechanicsville, IA
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is May (19 days).
The months with the least rainy days are January and February (5.2 days).
Average snowfall in December
Mechanicsville, IA
- Average snowfall in December: 3.11"
The month with the highest snowfall is January (5.79").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Mechanicsville, IA
- Average snowfall days in December: 9.5 days
The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mechanicsville, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Mechanicsville, IA
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is June (8.1 days).
Average UV index in December
Mechanicsville, IA
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Mechanicsville, IA
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in December
Mechanicsville, 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).
Mechanicsville, Iowa, USA
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