December weather forecastForestville, IA
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Forestville, Iowa, with an average temperature varying between 30.4°F (-0.9°C) and 20.1°F (-6.6°C).Temperature
In Forestville, the average high-temperature in December decreases from a frosty 43.5°F (6.4°C) in November to a freezing cold 30.4°F (-0.9°C). In Forestville, the December nights cool down to an average low of 20.1°F (-6.6°C).Humidity
The average relative humidity in December is 83%.Rainfall
In Forestville, Iowa, in December, it is raining for 6.1 days, with typically 1.5" (38mm) of accumulated precipitation. In Forestville, during the entire year, the rain falls for 142.8 days and collects up to 30.55" (776mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Forestville. In Forestville, in December, snow falls for 10.7 days, with typically accumulated 4.09" (104mm) of snow. In Forestville, Iowa, during the entire year, snow falls for 51 days and aggregates up to 22.05" (560mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:17 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:42 pm CST.
Sunshine
In Forestville, the average sunshine in December is 4.1h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A typical high UV index of 1 in December suggests the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Forestville, IA
- Average high temperature in December: 30.4°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 (23.7°F).
- Average low temperature in December: 20.1°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 (11.3°F).
Average pressure in December
Forestville, IA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Forestville, IA
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in December
Forestville, IA
- Average humidity in December: 83%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Forestville, IA
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is June (4.65").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in December
Forestville, IA
- Average rainfall days in December: 6.1 days
The month with the highest number of rainy days is June (19.4 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in December
Forestville, IA
- Average snowfall in December: 4.09"
The month with the highest snowfall is February (6.1").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Forestville, IA
- Average snowfall days in December: 10.7 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Forestville, IA
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 6min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Forestville, IA
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is June (8.2 days).
Average UV index in December
Forestville, IA
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Forestville, IA
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Forestville, IA
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
