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 shift into December is marked by a considerable temperature decrease, with the average high-temperature dropping from a frosty 43.2°F (6.2°C) in November to a freezing cold 27.3°F (-2.6°C). During the month of December, Lester anticipates a mean low-temperature of 15.8°F (-9°C).Humidity
In Lester, the average relative humidity in December is 85%.Rainfall
In Lester, Iowa, during December, the rain falls for 4.5 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, in Lester, there are 119.2 rainfall days, and 22.13" (562mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Lester, in December, snow falls for 11.6 days, with typically accumulated 3.46" (88mm) of snow. Throughout the year, in Lester, there are 48.3 snowfall days, and 19.29" (490mm) of snow is accumulated.Daylight
The month with the shortest days in Lester is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:38 am and sunset at 4:50 pm. On the last day of December, in Lester, sunrise is at 7:57 am and sunset at 4:59 pm CST.
Sunshine
The average sunshine in December in Lester is 4.3h.UV index
In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.Note: In December, an average UV index of 2 transforms into the following instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is December in Lester?
What is the average humidity in December in Lester?
How much does it rain in Lester in December?
How many days does it snow in December in Lester?
What is the month with the shortest days in Lester?
How many hours of daylight does Lester have in December?
What time are sunrise and sunset in December in Lester?
How many hours of sunshine does Lester have in December?
How high is the UV index in December in Lester?
Average temperature in December
Lester, IA
- Average high temperature in December: 27.3°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (23°F).
- Average low temperature in December: 15.8°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (9.5°F).
Average pressure in December
Lester, IA
- 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 (29.86"Hg).
Average wind speed in December
Lester, IA
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in December
Lester, IA
- Average humidity in December: 85%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (67%).
Average rainfall in December
Lester, IA
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in December
Lester, IA
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in December
Lester, IA
- Average snowfall in December: 3.46"
The month with the highest snowfall is February (4.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lester, IA
- Average snowfall days in December: 11.6 days
The month with the highest number of snowfall days is December (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lester, 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: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Lester, IA
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in December
Lester, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Lester, IA
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Lester, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Lester, Iowa, USA
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