December weather forecastSaint Martin, OH
December
Weather in December
December, the first month of the winter in Saint Martin, is also an icy month, with an average temperature fluctuating between 30°F (-1.1°C) and 40.6°F (4.8°C).Temperature
December's arrival corresponds with a decrease in average high-temperatures, from November's fresh 50.9°F (10.5°C) to an icy 40.6°F (4.8°C). Throughout the month of December, the average temperature dips to a freezing cold 30°F (-1.1°C) at night.Humidity
The months with the highest humidity are January, February and December, with an average relative humidity of 82%.Rainfall
In Saint Martin, in December, it is raining for 11 days, with typically 1.93" (49mm) of accumulated precipitation. Throughout the year, there are 151 rainfall days, and 23.03" (585mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Saint Martin, Ohio, in December, snow falls for 7.2 days, with typically accumulated 1.57" (40mm) of snow. Throughout the year, there are 30 snowfall days, and 9.17" (233mm) of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:36 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 5:22 pm EST.
Sunshine
The average sunshine in December in Saint Martin, Ohio, is 4.1h.UV index
The months with the lowest UV index in Saint Martin are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 2 during December leads to these instructions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Saint Martin, OH
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (35.1°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in December
Saint Martin, OH
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Saint Martin, OH
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in December
Saint Martin, OH
- Average humidity in December: 82%
The months with the highest relative humidity are January, February and December (82%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Saint Martin, OH
- Average rainfall in December: 1.93"
The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is September (1.26").
Average rainfall days in December
Saint Martin, OH
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in December
Saint Martin, OH
- Average snowfall in December: 1.57"
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
Saint Martin, OH
- Average snowfall days in December: 7.2 days
The month with the highest number of snowfall days is January (8.3 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
Saint Martin, OH
- Average daylight in December: 9h and 30min
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 6min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Saint Martin, OH
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in December
Saint Martin, OH
- 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
Saint Martin, OH
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Saint Martin, OH
- 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).
