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
Start of December brings a shift in the average high-temperature, falling from November's chilly 44.8°F (7.1°C) to a cold 32.4°F (0.2°C). December nights in Olin cool down to an average low-temperature of 22.1°F (-5.5°C).Humidity
In Olin, Iowa, the average relative humidity in December is 82%.Rainfall
In Olin, in December, it is raining for 6.5 days, with typically 1.3" (33mm) of accumulated precipitation. Throughout the year, in Olin, there are 137.5 rainfall days, and 27.68" (703mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Olin, in December, snow falls for 8.7 days, with typically accumulated 2.24" (57mm) of snow. Throughout the year, there are 38.8 snowfall days, and 15.16" (385mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:13 am and sunset at 4:34 pm. On the last day of December, sunrise is at 7:32 am and sunset at 4:43 pm CST.
Sunshine
In December, the average sunshine is 4.2h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 1 during December translates into the following directions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. To protect against the Sun's most potent rays, avoid direct exposure around midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Olin in December?
What is the average humidity in December in Olin?
How much does it rain in Olin in December?
How much does it snow in Olin in December?
What is the month with the shortest days in Olin?
How many hours of daylight does Olin have in December?
What time are sunrise and sunset in December in Olin?
How long on average sun shines in December in Olin?
When is the lowest UV index in Olin?
What is the UV index reading in December in Olin?
Average temperature in December
Olin, IA
- Average high temperature in December: 32.4°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in December: 22.1°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in December
Olin, 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 (29.9"Hg).
Average wind speed in December
Olin, IA
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Olin, IA
- Average humidity in December: 82%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Olin, IA
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in December
Olin, IA
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in December
Olin, IA
- Average snowfall in December: 2.24"
The month with the highest snowfall is January (5.16").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Olin, IA
- Average snowfall days in December: 8.7 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Olin, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Olin, IA
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in December
Olin, IA
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Olin, 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 August (Cloud cover 30).
Average visibility in December
Olin, 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).
Olin, Iowa, USA
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