December weather forecastRiverdale, FL
December
Weather in December
December, the first month of the winter in Riverdale, is still a pleasant month, with an average temperature fluctuating between 54.9°F (12.7°C) and 71.8°F (22.1°C).Temperature
Riverdale notes an average high-temperature of an agreeable 71.8°F (22.1°C) in December, hardly diverging from November. Riverdale witnesses an average low-temperature of 54.9°F (12.7°C) throughout the month of December.Humidity
In Riverdale, the average relative humidity in December is 77%.Rainfall
In Riverdale, in December, during 7.4 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. Throughout the year, there are 140.2 rainfall days, and 15" (381mm) of precipitation is accumulated.Daylight
December has the shortest days of the year, with an average of 10h and 24min of daylight.On the first day of December, sunrise is at 7:04 am and sunset at 5:31 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:43 pm EST.
Sunshine
December has the least sunshine of the year in Riverdale, with an average of 6.2h of sunshine.UV index
In Riverdale, the average daily maximum UV index in December is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 5 during December leads to these instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Riverdale, FL
- Average high temperature in December: 71.8°F
The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is January (67.6°F).
- Average low temperature in December: 54.9°F
The month with the highest average low temperature is August (75.6°F).
The coldest month (with the lowest average low temperature) is January (50°F).
Average pressure in December
Riverdale, FL
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed in December
Riverdale, FL
- Average wind speed in December: 5.7mph
The windiest months (with the highest average wind speed) are March and April (6.3mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).
Average humidity in December
Riverdale, FL
- Average humidity in December: 77%
The months with the highest relative humidity are July, August and September (79%).
The month with the lowest relative humidity is March (72%).
Average rainfall in December
Riverdale, FL
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is August (2.95").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days in December
Riverdale, FL
- Average rainfall days in December: 7.4 days
The month with the highest number of rainy days is July (20.8 days).
The month with the least rainy days is January (5.8 days).
Average daylight in December /
Average sunshine in December
Riverdale, FL
- Average daylight in December: 10h and 24min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in December: 6h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in December
Riverdale, FL
- Average sunshine days in December: 21.2 days
The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is August (6.2 days).
Average UV index in December
Riverdale, FL
- Average UV index in December: 5
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).
Average cloud cover in December
Riverdale, FL
- Average cloud cover in December: 36
The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is May (Cloud cover 28).
Average visibility in December
Riverdale, FL
- 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).
