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
December brings a decrease in the average high-temperature, falling from November's frosty 47.1°F (8.4°C) to an icy 37.6°F (3.1°C). Throughout December, Cortland's nights cool down to an average of 26.8°F (-2.9°C).Humidity
In Cortland, the average relative humidity in December is 86%.Rainfall
In December, in Cortland, the rain falls for 11.8 days. Throughout December, 2.6" (66mm) of precipitation is accumulated. In Cortland, during the entire year, the rain falls for 177.5 days and collects up to 32.48" (825mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Cortland, in December, during 15.9 snowfall days, 6.5" (165mm) of snow is typically accumulated. In Cortland, during the entire year, snow falls for 77.8 days and aggregates up to 33.11" (841mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:30 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 5:03 pm EST.
Sunshine
In December, the average sunshine is 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 minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: In December, an average UV index of 1 transforms into the following instructions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. It's recommended to limit sun exposure when its radiation is at its peak during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in Cortland in December?
What is the month with the shortest days in Cortland?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Cortland, OH
- Average high temperature in December: 37.6°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in December: 26.8°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Cortland, OH
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Cortland, OH
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is July (5mph).
Average humidity in December
Cortland, OH
- Average humidity in December: 86%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are July and August (77%).
Average rainfall in December
Cortland, OH
- Average rainfall in December: 2.6"
The wettest month (with the highest rainfall) is June (3.39").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in December
Cortland, OH
- Average rainfall days in December: 11.8 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in December
Cortland, OH
- Average snowfall in December: 6.5"
The month with the highest snowfall is January (8.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Cortland, OH
- Average snowfall days in December: 15.9 days
The month with the highest number of snowfall days is January (19.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Cortland, OH
- Average daylight in December: 9h and 2min
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: 3h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in December
Cortland, OH
- Average sunshine days in December: 8.2 days
The month with the most sunshine days is September (12.7 days).
The month with the least sunshine days is February (6 days).
Average UV index in December
Cortland, OH
- 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
Cortland, OH
- Average cloud cover in December: 69
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Cortland, OH
- Average visibility in December: 4mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).
Cortland, Ohio, USA
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