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
In Deep River, the average high-temperature in December drops from a frosty 46.8°F (8.2°C) in November to a wintry 33.6°F (0.9°C). Deep River experiences an average low-temperature reading of 22.3°F (-5.4°C) throughout December.Humidity
In Deep River, the average relative humidity in December is 80%.Rainfall
In December, in Deep River, the rain falls for 7.3 days. Throughout December, 1.46" (37mm) of precipitation is accumulated. In Deep River, Iowa, during the entire year, the rain falls for 145.5 days and collects up to 30.39" (772mm) of precipitation.Snowfall
Months with snowfall in Deep River are January through May, October through December. In December, in Deep River, it is snowing for 7.5 days. Throughout December, 2.24" (57mm) of snow is accumulated. In Deep River, Iowa, during the entire year, snow falls for 39 days and aggregates up to 16.65" (423mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Deep River.On the first day of the month, sunrise is at 7:17 am and sunset at 4:40 pm. On the last day of December, sunrise is at 7:36 am and sunset at 4:49 pm CST.
Sunshine
The average sunshine in December is 4.6h.UV index
In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 2 during December translates into these guidelines:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Deep River?
What is the average humidity in December in Deep River?
How much does it rain in Deep River in December?
How much does it snow in Deep River in December?
What is the month with the shortest days in Deep River?
What is the average length of the day in December in Deep River?
When are sunrise and sunset in December in Deep River?
How long on average sun shines in December in Deep River?
How high is the UV index in December in Deep River?
Average temperature in December
Deep River, IA
- Average high temperature in December: 33.6°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27.1°F).
- Average low temperature in December: 22.3°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).
Average pressure in December
Deep River, 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 (29.89"Hg).
Average wind speed in December
Deep River, IA
- Average wind speed in December: 10.1mph
The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Deep River, IA
- Average humidity in December: 80%
The months with the highest relative humidity are January and July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Deep River, IA
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is May (4.57").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in December
Deep River, IA
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is June (18.9 days).
The month with the least rainy days is February (5 days).
Average snowfall in December
Deep River, IA
- Average snowfall in December: 2.24"
The month with the highest snowfall is February (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Deep River, IA
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Deep River, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
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 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Deep River, IA
- Average sunshine days in December: 18.1 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in December
Deep River, 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 January (UV index 1).
Average cloud cover in December
Deep River, IA
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Deep River, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Deep River, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location