December weather forecastChatsworth, IA
December
Weather in December
December, the first month of the winter in Chatsworth, is also a subzero cold month, with an average temperature fluctuating between 29.3°F (-1.5°C) and 16.9°F (-8.4°C).Temperature
Chatsworth's transition into December is marked by a clear drop in the average high-temperature, receding from a chilly 45.1°F (7.3°C) in November to a subzero cold 29.3°F (-1.5°C). In December, Chatsworth encounters an average low-temperature of 16.9°F (-8.4°C) during the night.Humidity
In December, the average relative humidity is 83%.Rainfall
In Chatsworth, during December, the rain falls for 1.9 days and regularly aggregates up to 0.35" (9mm) of precipitation. Throughout the year, there are 80.7 rainfall days, and 6.54" (166mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Chatsworth, in December, snow falls for 5.5 days, with typically accumulated 0.35" (9mm) of snow. Throughout the year, there are 27.5 snowfall days, and 2.76" (70mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:38 am and sunset at 4:52 pm. On the last day of December, sunrise is at 7:56 am and sunset at 5:01 pm CST.
Sunshine
In Chatsworth, the average sunshine in December is 4.5h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum UV index of 2 in December translates into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Around midday, solar radiation is most harmful; hence, exposure should be limited. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Chatsworth, IA
- Average high temperature in December: 29.3°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in December: 16.9°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).
Average pressure in December
Chatsworth, 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
Chatsworth, IA
- Average wind speed in December: 9.9mph
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
Chatsworth, IA
- Average humidity in December: 83%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (66%).
Average rainfall in December
Chatsworth, IA
- Average rainfall in December: 0.35"
The wettest month (with the highest rainfall) is June (1.06").
The driest months (with the least rainfall) are January and February (0.16").
Average rainfall days in December
Chatsworth, IA
- Average rainfall days in December: 1.9 days
The month with the highest number of rainy days is June (13 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in December
Chatsworth, IA
- Average snowfall in December: 0.35"
The month with the highest snowfall is February (0.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Chatsworth, IA
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Chatsworth, 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 30min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Chatsworth, IA
- Average sunshine days in December: 26 days
The month with the most sunshine days is December (26 days).
The month with the least sunshine days is June (13.2 days).
Average UV index in December
Chatsworth, IA
- Average UV index in December: 2
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 2).
Average cloud cover in December
Chatsworth, 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 July (Cloud cover 27).
Average visibility in December
Chatsworth, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
