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
Transition into December marks a drop in the average high-temperature, moving from a chilly 43.9°F (6.6°C) in November to a subzero cold 30.7°F (-0.7°C). In the month of December, the average low-temperature usually rests at 19.9°F (-6.7°C).Humidity
In December, the average relative humidity is 83%.Rainfall
In December, in Iowa Falls, Iowa, the rain falls for 5.1 days. Throughout December, 1.26" (32mm) of precipitation is accumulated. Throughout the year, there are 132 rainfall days, and 27.01" (686mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Iowa Falls, in December, during 10.5 snowfall days, 2.87" (73mm) of snow is typically accumulated. In Iowa Falls, during the entire year, snow falls for 44.4 days and aggregates up to 16.65" (423mm) of snow.Daylight
December has the shortest days of the year in Iowa Falls, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:23 am and sunset at 4:40 pm. On the last day of December, sunrise is at 7:42 am and sunset at 4:50 pm CST.
Sunshine
In Iowa Falls, the average sunshine in December is 4.2h.UV index
The months with the lowest UV index in Iowa Falls are January, February, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 2 in December translates into this advice:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
How cold is it in Iowa Falls in December?
What is the average humidity in December in Iowa Falls?
How many days does it rain in December in Iowa Falls?
How many days does it snow in December in Iowa Falls?
What is the month with the shortest days in Iowa Falls?
How many hours of daylight does Iowa Falls have in December?
When are sunrise and sunset in December in Iowa Falls?
How long on average sun shines in December in Iowa Falls?
What are the months with the lowest UV index in Iowa Falls?
What is the UV index reading in December in Iowa Falls?
Average temperature in December
Iowa Falls, IA
- Average high temperature in December: 30.7°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in December: 19.9°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (11.8°F).
Average pressure in December
Iowa Falls, IA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Iowa Falls, IA
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in December
Iowa Falls, IA
- Average humidity in December: 83%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Iowa Falls, IA
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is June (4.06").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in December
Iowa Falls, IA
- Average rainfall days in December: 5.1 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in December
Iowa Falls, IA
- Average snowfall in December: 2.87"
The month with the highest snowfall is January (4.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Iowa Falls, IA
- Average snowfall days in December: 10.5 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Iowa Falls, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Iowa Falls, IA
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in December
Iowa Falls, IA
- Average UV index in December: 2
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in December
Iowa Falls, IA
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in December
Iowa Falls, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Iowa Falls, Iowa, USA
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