December weather forecastLone Rock, IA
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Lone Rock, Iowa, with an average temperature ranging between min 17.8°F (-7.9°C) and max 28.2°F (-2.1°C).Temperature
Lone Rock witnesses a significant decrease in the average high-temperature with the arrival of December, falling from November's chilly 43.2°F (6.2°C) to a freezing cold 28.2°F (-2.1°C). An average minimum temperature of 17.8°F (-7.9°C) is recorded during the month of December.Humidity
The average relative humidity in December is 84%.Rainfall
In December, in Lone Rock, the rain falls for 3.3 days. Throughout December, 0.51" (13mm) of precipitation is accumulated. In Lone Rock, during the entire year, the rain falls for 100.5 days and collects up to 11.69" (297mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Lone Rock, Iowa, in December, snow falls for 8 days, with typically accumulated 1.22" (31mm) of snow. In Lone Rock, during the entire year, snow falls for 36.9 days and aggregates up to 8.43" (214mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:30 am and sunset at 4:42 pm. On the last day of December, sunrise is at 7:49 am and sunset at 4:52 pm CST.
Sunshine
The average sunshine in December in Lone Rock, Iowa, is 4.3h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.Note: In December, the UV index of 1 transforms into the following advice:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lone Rock, IA
- Average high temperature in December: 28.2°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in December: 17.8°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in December
Lone Rock, IA
- Average pressure in December: 30.12"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
Lone Rock, IA
- Average wind speed in December: 10.4mph
The windiest months (with the highest average wind speed) are January and April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).
Average humidity in December
Lone Rock, IA
- Average humidity in December: 84%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (68%).
Average rainfall in December
Lone Rock, IA
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in December
Lone Rock, IA
- Average rainfall days in December: 3.3 days
The month with the highest number of rainy days is June (14.5 days).
The month with the least rainy days is February (2.1 days).
Average snowfall in December
Lone Rock, IA
- Average snowfall in December: 1.22"
The month with the highest snowfall is February (2.56").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Lone Rock, IA
- Average snowfall days in December: 8 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lone Rock, IA
- Average daylight in December: 9h and 0min
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 0min).
- Average sunshine in December: 4h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Lone Rock, IA
- Average sunshine days in December: 21.5 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is June (12.8 days).
Average UV index in December
Lone Rock, IA
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Lone Rock, IA
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Lone Rock, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
