Average weather for Glen St. Mary in December
It's pleasantly warm in December in Glen St. Mary with an average temperature of 21°C. Temperatures this month range from a low of 18°C to a high of 24°C. At night, you can expect temperatures between 8°C and 14°C.
Start of December
The month of December starts in Glen St. Mary with warm temps, averaging around 22°C during the day and nights around 11°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
Mid December
By mid-December, daytime temps drop to around 21°C, with nights around 10°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of December
By the end of December, the average daytime temperature in Glen St. Mary is around 22°C, while nighttime temps are about 12°C. A shower might pop up, but overall, the weather will be dry and sunny.
In December, there is an average of 92 mm of precipitation, spread over 6 days. The wind speed is around 3 Bft, mostly coming from the South.
Glen St. Mary in December |
New York | ||
---|---|---|---|
![]() |
21°C | 9°C | |
![]() |
24°C | 12°C | |
![]() |
18°C | -5°C | |
![]() |
92 mm | 133 mm | |
![]() |
6 days | 17 days |
UV index
The UV index is a maximum of 3 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Is December a good time to visit Glen St. Mary?
Looking for great weather? December is a good time to be in Glen St. Mary. The temperatures are nice, and there’s not too much rain.
The hurricane season in Glen St. Mary runs from June to November.
Temperature records
With 29°C in 2015, Glen St. Mary reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was 4°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of -5°C to a highest value of 22°C.
Check out the climate of Glen St. Mary for all months and discover the best travel time
Daily Temperature in December in Glen St. Mary
This chart shows the average daily high and low temperatures in December for Glen St. Mary, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in December in Glen St. Mary
The chart below shows the average daily precipitation in December for Glen St. Mary, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for December, you can expect about 6 days of precipitation in Glen St. Mary.
Daily UV index in December in Glen St. Mary
This chart shows the average daily UV index in December in Glen St. Mary, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in December in Glen St. Mary over the years
This chart shows the average temperature in December in Glen St. Mary, measured in degrees Celsius, over the past few years.
Total precipitation in December in Glen St. Mary over the years
This chart shows the average precipitation in December in Glen St. Mary, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in December for Glen St. Mary
Click on any day in December to get detailed info about the usual weather on that day in Glen St. Mary. Check out the historical temperatures and precipitation over the past 10 years on this day.































Weather experiences in December in Glen St. Mary
Have you been to Glen St. Mary in December?
Share your weather experience in December in Glen St. Mary.
Average weather in Glen St. Mary by month
Click on a month below to see detailed weather info for Glen St. Mary. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Glen St. Mary for all months at once