December weather forecastAmes, AR
December
Weather in December
December, the first month of the winter in Ames, is still a cool month, with an average temperature fluctuating between 39.9°F (4.4°C) and 54.3°F (12.4°C).Temperature
The transition into December involves a small decrease in the average high-temperature, dipping slightly from a comfortable 62.4°F (16.9°C) in November to a fresh 54.3°F (12.4°C). In December, Ames encounters an average low-temperature of 39.9°F (4.4°C) during the night.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 81%.Rainfall
In Ames, during December, the rain falls for 13 days and regularly aggregates up to 3.7" (94mm) of precipitation. Throughout the year, there are 160.4 rainfall days, and 38.86" (987mm) of precipitation is accumulated.Snowfall
April through October and December are months without snowfall.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:59 am and sunset at 5:04 pm. On the last day of December, sunrise is at 7:17 am and sunset at 5:15 pm CST.
Sunshine
In Ames, the average sunshine in December is 5.1h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 2 in December leads to these guidelines:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Ames, AR
- Average high temperature in December: 54.3°F
The warmest months (with the highest average high temperature) are July and August (93.4°F).
The month with the lowest average high temperature is January (51.8°F).
- Average low temperature in December: 39.9°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (36.5°F).
Average pressure in December
Ames, AR
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Ames, AR
- Average wind speed in December: 6.1mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Ames, AR
- Average humidity in December: 81%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is August (70%).
Average rainfall in December
Ames, AR
- Average rainfall in December: 3.7"
The wettest month (with the highest rainfall) is April (5.08").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in December
Ames, AR
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is October (10.3 days).
Average snowfall in December
Ames, AR
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in December
Ames, AR
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (1.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Ames, AR
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 5h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Ames, AR
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is February (13 days).
Average UV index in December
Ames, AR
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Ames, AR
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are August and September (Cloud cover 28).
Average visibility in December
Ames, AR
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
