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
The beginning of December subtly marks a decrease in the average high-temperature, transitioning from a pleasant 71.2°F (21.8°C) in November to an enjoyable 65.8°F (18.8°C). December nights are marked by an average low-temperature of 48.7°F (9.3°C).Humidity
The months with the highest humidity are August, September and December, with an average relative humidity of 77%.Rainfall
In December, the rain falls for 9.9 days. Throughout December, 2.2" (56mm) of precipitation is accumulated. Throughout the year, there are 173.6 rainfall days, and 31.3" (795mm) of precipitation is accumulated.Snowfall
In Alton, snow does not fall in January, March through December.Daylight
With an average of 10h and 12min of daylight, December has the shortest days of the year in Alton.On the first day of December, sunrise is at 7:11 am and sunset at 5:32 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:43 pm EST.
Sunshine
The month with the least sunshine in Alton is December, with an average of 5.8h of sunshine.UV index
In Alton, the average daily maximum UV index in December is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 4 during December, leads to the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What is the usual temperature for Alton in December?
What is the most humid month in Alton?
What is the average humidity in December in Alton?
How much does it rain in Alton in December?
When it does not snow in Alton?
What is the month with the shortest days in Alton?
What is the average length of the day in December in Alton?
When is the sunrise / sunset in December in Alton?
What is the month with the least sunshine in Alton?
How long on average sun shines in December in Alton?
What is the UV index intensity in December in Alton?
Average temperature in December
Alton, FL
- Average high temperature in December: 65.8°F
The warmest months (with the highest average high temperature) are July and August (91.2°F).
The month with the lowest average high temperature is January (62.2°F).
- Average low temperature in December: 48.7°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 (44.2°F).
Average pressure in December
Alton, FL
- Average pressure in December: 30.13"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
Alton, FL
- Average wind speed in December: 5.9mph
The windiest months (with the highest average wind speed) are March and April (6.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in December
Alton, FL
- Average humidity in December: 77%
The months with the highest relative humidity are August, September and December (77%).
The month with the lowest relative humidity is May (70%).
Average rainfall in December
Alton, FL
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is August (4.57").
The driest month (with the least rainfall) is November (1.14").
Average rainfall days in December
Alton, FL
- Average rainfall days in December: 9.9 days
The month with the highest number of rainy days is August (25.5 days).
The month with the least rainy days is November (7.2 days).
Average snowfall days in December
Alton, FL
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Alton, 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
Alton, FL
- Average sunshine days in December: 20 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is August (4.3 days).
Average UV index in December
Alton, FL
- Average UV index in December: 4
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in December
Alton, FL
- Average cloud cover in December: 40
The month with the most cloud cover is December (Cloud cover 40).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in December
Alton, FL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (6mi).
The month with the lowest visibility is September (5mi).
Alton, Florida, USA
Weather forecast for your location
2. Allow the app to use your location
