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 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
Witnessing a clear drop in December, the average high-temperature declines from November's frosty 44.8°F (7.1°C) to a subzero cold 30.2°F (-1°C). Throughout December, an average low-temperature of 20.1°F (-6.6°C) is expected in Ulmer.Humidity
In Ulmer, the average relative humidity in December is 81%.Rainfall
In Ulmer, Iowa, in December, it is raining for 4 days, with typically 0.67" (17mm) of accumulated precipitation. In Ulmer, during the entire year, the rain falls for 107.9 days and collects up to 15.04" (382mm) of precipitation.Snowfall
Months with snowfall in Ulmer are January through May, October through December. In December, it is snowing for 7.6 days. Throughout December, 1.02" (26mm) of snow is accumulated. In Ulmer, during the entire year, snow falls for 35.1 days and aggregates up to 7.99" (203mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:29 am and sunset at 4:48 pm. On the last day of December, sunrise is at 7:48 am and sunset at 4:57 pm CST.
Sunshine
In Ulmer, the average sunshine in December is 4.7h.UV index
In Ulmer, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Frequently asked questions
How cold is December in Ulmer?
What is the average humidity in December in Ulmer?
How many days does it rain in December in Ulmer?
How much does it snow in Ulmer in December?
What is the month with the shortest days in Ulmer?
How many hours of daylight does Ulmer have in December?
When are sunrise and sunset in December in Ulmer?
How long on average sun shines in December in Ulmer?
What is the UV index intensity in December in Ulmer?
Average temperature in December
Ulmer, IA
- Average high temperature in December: 30.2°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in December: 20.1°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).
Average pressure in December
Ulmer, IA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Ulmer, IA
- Average wind speed in December: 10.7mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in December
Ulmer, IA
- Average humidity in December: 81%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is April (67%).
Average rainfall in December
Ulmer, IA
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in December
Ulmer, IA
- Average rainfall days in December: 4 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (2.5 days).
Average snowfall in December
Ulmer, IA
- Average snowfall in December: 1.02"
The month with the highest snowfall is February (2.68").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Ulmer, IA
- Average snowfall days in December: 7.6 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Ulmer, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Ulmer, IA
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is June (12 days).
Average UV index in December
Ulmer, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Ulmer, IA
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Ulmer, IA
- 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).
Ulmer, Iowa, USA
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