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
The transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a cool 52.5°F (11.4°C) in November to a cold 41°F (5°C). Olney, during December, witnesses an average low-temperature of 28.4°F (-2°C).Humidity
The average relative humidity in December in Olney, Missouri, is 77%.Rainfall
In December, the rain falls for 6.5 days. Throughout December, 1.73" (44mm) of precipitation is accumulated. Throughout the year, there are 139.8 rainfall days, and 28.7" (729mm) of precipitation is accumulated.Snowfall
Months with snowfall in Olney, Missouri, are January through April, November and December. In Olney, during December, snow falls for 4 days and regularly aggregates up to 1.54" (39mm) of snow. In Olney, during the entire year, snow falls for 19.7 days and aggregates up to 9.49" (241mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:05 am and sunset at 4:42 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:52 pm CST.
Sunshine
In Olney, the average sunshine in December is 4.9h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Olney. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 2 suggests this advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold in Olney?
What is the average humidity in December in Olney?
How many days does it rain in December in Olney?
How many days does it snow in December in Olney?
What is the month with the shortest days in Olney?
How many hours of daylight does Olney have in December?
When are sunrise and sunset in December in Olney?
How many hours of sunshine does Olney have in December?
When is the lowest UV index in Olney?
How high is the UV index in December in Olney?
Average temperature in December
Olney, MO
- Average high temperature in December: 41°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in December: 28.4°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in December
Olney, MO
- 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 (29.91"Hg).
Average wind speed in December
Olney, MO
- Average wind speed in December: 9mph
The windiest months (with the highest average wind speed) are January and February (9.3mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in December
Olney, MO
- Average humidity in December: 77%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Olney, MO
- Average rainfall in December: 1.73"
The wettest month (with the highest rainfall) is May (3.39").
The driest months (with the least rainfall) are January and February (1.46").
Average rainfall days in December
Olney, MO
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is December (6.5 days).
Average snowfall in December
Olney, MO
- Average snowfall in December: 1.54"
The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Olney, MO
- Average snowfall days in December: 4 days
The month with the highest number of snowfall days is February (5.9 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
Olney, MO
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in December
Olney, MO
- Average sunshine days in December: 20 days
The month with the most sunshine days is December (20 days).
The month with the least sunshine days is May (12.2 days).
Average UV index in December
Olney, MO
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Olney, MO
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Olney, MO
- 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).
Olney, Missouri, USA
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