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 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
During December, Glen Saint Mary observes a subtle ascent to an enjoyable 67.1°F (19.5°C) from November's 72.3°F (22.4°C) in the average high-temperature. During the month of December, Glen Saint Mary's nighttime temperature lowers to an average of 49.6°F (9.8°C).Humidity
With an average relative humidity of 78%, December is the most humid month in Glen Saint Mary.Rainfall
In Glen Saint Mary, during December, the rain falls for 11.8 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Glen Saint Mary, Florida, during the entire year, the rain falls for 200.2 days and collects up to 37.64" (956mm) of precipitation.Snowfall
January, February and December are months with snowfall in Glen Saint Mary, Florida. The months with the most snowfall days are January, February and December, with an average of 0.1 snowfall days.Daylight
The month with the shortest days is December, with an average of 10h and 12min of daylight.On the first day of December in Glen Saint Mary, sunrise is at 7:07 am and sunset at 5:27 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:38 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 5.8h of sunshine.UV index
January, February and December, with an average maximum UV index of 4, are months with the lowest UV index in Glen Saint Mary. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 4 in December translates into these instructions:
Exercise prevention - Precautions against solar damage are endorsed. Around midday, solar radiation is most harmful; hence, exposure should be limited. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What are December temperatures in Glen Saint Mary?
What is the most humid month in Glen Saint Mary?
What is the average humidity in December in Glen Saint Mary?
How much does it rain in Glen Saint Mary in December?
When does it snow the most in Glen Saint Mary?
When does it start snowing in Glen Saint Mary?
What is the month with the shortest days in Glen Saint Mary?
What is the average length of the day in December in Glen Saint Mary?
When are sunrise and sunset in December in Glen Saint Mary?
What is the month with the least sunshine in Glen Saint Mary?
How long on average sun shines in December in Glen Saint Mary?
What is the month with the lowest UV index in Glen Saint Mary?
What is the UV index intensity in December in Glen Saint Mary?
Average temperature in December
Glen Saint Mary, FL
- Average high temperature in December: 67.1°F
The warmest month (with the highest average high temperature) is August (91.8°F).
The month with the lowest average high temperature is January (63°F).
- Average low temperature in December: 49.6°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (44.6°F).
Average pressure in December
Glen Saint Mary, FL
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in December
Glen Saint Mary, FL
- Average wind speed in December: 5.4mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in December
Glen Saint Mary, FL
- Average humidity in December: 78%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is March (70%).
Average rainfall in December
Glen Saint Mary, FL
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is August (5.87").
The driest month (with the least rainfall) is November (1.42").
Average rainfall days in December
Glen Saint Mary, FL
- Average rainfall days in December: 11.8 days
The months with the highest number of rainy days are July and August (27.5 days).
The month with the least rainy days is November (9.9 days).
Average snowfall days in December
Glen Saint Mary, FL
- Average snowfall days in December: 0.1 days
The months with the highest number of snowfall days are January, February and December (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Glen Saint Mary, FL
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in December
Glen Saint Mary, FL
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is January (19.2 days).
The month with the least sunshine days is August (1.6 days).
Average UV index in December
Glen Saint Mary, FL
- Average UV index in December: 4
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 4).
Average cloud cover in December
Glen Saint Mary, FL
- Average cloud cover in December: 42
The month with the most cloud cover is December (Cloud cover 42).
The months with the least cloud cover are May, July and October (Cloud cover 32).
Average visibility in December
Glen Saint Mary, FL
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is December (5mi).
Glen Saint Mary, Florida, USA
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