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 signals a distinct temperature shift, dropping from an icy 41.7°F (5.4°C) in November to a freezing cold 27.3°F (-2.6°C). Throughout the month of December, Lake Mills observes an average nighttime temperature of 16.5°F (-8.6°C).Humidity
The average relative humidity in December is 87%.Rainfall
In Lake Mills, during December, the rain falls for 5 days and regularly aggregates up to 1.57" (40mm) of precipitation. In Lake Mills, during the entire year, the rain falls for 138.3 days and collects up to 28.15" (715mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Lake Mills, during December, snow falls for 13.7 days and regularly aggregates up to 4.76" (121mm) of snow. Throughout the year, there are 62.9 snowfall days, and 28.23" (717mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of December, sunrise is at 7:27 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 4:48 pm CST.
Sunshine
The average sunshine in December is 3.8h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Lake Mills. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Lake Mills have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Lake Mills have in December?
What is the month with the lowest UV index?
What is the UV index reading in December in Lake Mills?
Average temperature in December
Lake Mills, IA
- Average high temperature in December: 27.3°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (21.7°F).
- Average low temperature in December: 16.5°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).
Average pressure in December
Lake Mills, IA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Lake Mills, IA
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).
Average humidity in December
Lake Mills, IA
- Average humidity in December: 87%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Lake Mills, IA
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is June (4.41").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in December
Lake Mills, IA
- Average rainfall days in December: 5 days
The month with the highest number of rainy days is June (19.4 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Lake Mills, IA
- Average snowfall in December: 4.76"
The month with the highest snowfall is February (7.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lake Mills, IA
- Average snowfall days in December: 13.7 days
The month with the highest number of snowfall days is January (15.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lake Mills, IA
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Lake Mills, IA
- Average sunshine days in December: 13.6 days
The month with the most sunshine days is October (16.7 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in December
Lake Mills, 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, February, November and December (UV index 1).
Average cloud cover in December
Lake Mills, IA
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Lake Mills, IA
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, September, October and November (6mi).
The months with the lowest visibility are January, February, July, August and December (5mi).
Lake Mills, Iowa, USA
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