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
As November transitions to December, the average high-temperature falls from a chilly 45.5°F (7.5°C) to an icy 32°F (0°C). Dayton experiences a steady low-temperature of 21°F (-6.1°C) throughout December.Humidity
In December, the average relative humidity is 80%.Rainfall
In Dayton, Iowa, in December, it is raining for 4.8 days, with typically 1.3" (33mm) of accumulated precipitation. In Dayton, Iowa, during the entire year, the rain falls for 126.1 days and collects up to 26.85" (682mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Dayton. In December, in Dayton, it is snowing for 8 days. Throughout December, 2.32" (59mm) of snow is accumulated. In Dayton, during the entire year, snow falls for 37.8 days and aggregates up to 15.39" (391mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Dayton.On the first day of December in Dayton, sunrise is at 7:26 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 4:54 pm CST.
Sunshine
In December, the average sunshine is 4.6h.UV index
The months with the lowest UV index in Dayton are January, February, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: An average UV index of 2 in December transforms into this advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Frequently asked questions
How cold is December in Dayton?
What is the average humidity in December in Dayton?
How much does it rain in Dayton in December?
How many days does it snow in December in Dayton?
What is the month with the shortest days in Dayton?
What is the average length of the day in December in Dayton?
When is the sunrise / sunset in December in Dayton?
How long on average sun shines in December in Dayton?
What is the month with the lowest UV index in Dayton?
What is the UV index reading in December in Dayton?
Average temperature in December
Dayton, IA
- Average high temperature in December: 32°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in December: 21°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in December
Dayton, 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
Dayton, IA
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in December
Dayton, IA
- Average humidity in December: 80%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall in December
Dayton, IA
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in December
Dayton, IA
- Average rainfall days in December: 4.8 days
The month with the highest number of rainy days is June (16.7 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Dayton, IA
- Average snowfall in December: 2.32"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Dayton, IA
- Average snowfall days in December: 8 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Dayton, 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 0min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Dayton, IA
- Average sunshine days in December: 18.1 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in December
Dayton, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (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
Dayton, IA
- Average cloud cover in December: 52
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and September (Cloud cover 31).
Average visibility in December
Dayton, 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).
Dayton, Iowa, USA
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