December weather forecastOskaloosa, IA
December
Weather in December
Cold and chilly weather characterizes December in Oskaloosa, wrapping up the year in a wintry vibe. The temperature drops further, and snowfall returns with an average of 1.65" (42mm). As daylight hours decrease, nights become longer, and the city is often blanketed in snow. Perfect for winter lovers, December sees locals and tourists engage in various winter activities such as snowboarding and ice skating.Temperature
The average high-temperature in Oskaloosa drops in December, from November's frosty 47.3°F (8.5°C) to a wintry 34.7°F (1.5°C). In December, Oskaloosa experiences a temperature dip to an average of 23.5°F (-4.7°C) at night.Humidity
In December, the average relative humidity in Oskaloosa is 80%.Rainfall
In December, in Oskaloosa, the rain falls for 7.1 days. Throughout December, 1.3" (33mm) of precipitation is accumulated. In Oskaloosa, during the entire year, the rain falls for 141.1 days and collects up to 28.5" (724mm) of precipitation.Snowfall
Months with snowfall in Oskaloosa are January through May, October through December. In Oskaloosa, in December, snow falls for 6.5 days, with typically accumulated 1.65" (42mm) of snow. Throughout the year, in Oskaloosa, there are 32.1 snowfall days, and 15.28" (388mm) of snow is accumulated.Daylight
With an average of 9h and 18min 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 4:42 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:51 pm CST.
Sunshine
In December, the average sunshine in Oskaloosa, Iowa, is 4.8h.UV index
The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Oskaloosa, IA
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in December: 23.5°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in December
Oskaloosa, 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 (29.89"Hg).
Average wind speed in December
Oskaloosa, IA
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).
Average humidity in December
Oskaloosa, IA
- Average humidity in December: 80%
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Oskaloosa, IA
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in December
Oskaloosa, IA
- Average rainfall days in December: 7.1 days
The month with the highest number of rainy days is June (18.6 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in December
Oskaloosa, IA
- Average snowfall in December: 1.65"
The month with the highest snowfall is February (4.92").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Oskaloosa, IA
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Oskaloosa, IA
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Oskaloosa, IA
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (9 days).
Average UV index in December
Oskaloosa, 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
Oskaloosa, IA
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in December
Oskaloosa, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
