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 Richland, entering December brings a temperature decrement, reducing from November's chilly 47.7°F (8.7°C) to an icy 35.2°F (1.8°C). During the nights in December, the temperature in Richland averages to a subzero cold 24.1°F (-4.4°C).Humidity
In Richland, the average relative humidity in December is 79%.Rainfall
January and December are months with the least rain in Richland when the rain falls for 7.1 days and typically aggregates up to 1.18" (30mm) of rain.Snowfall
Months with snowfall in Richland, Iowa, are January through April, October through December. In Richland, during December, snow falls for 6.5 days and regularly aggregates up to 1.65" (42mm) of snow. In Richland, during the entire year, snow falls for 32.1 days and aggregates up to 14.33" (364mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December in Richland, sunrise is at 7:14 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 4:49 pm CST.
Sunshine
In December, the average sunshine is 4.5h.UV index
The average daily maximum UV index in December in Richland is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In December, the UV index of 2 transforms into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
How cold is December in Richland?
What is the average humidity in December in Richland?
What is the driest month in Richland?
How many days does it rain in December in Richland?
How much does it snow in Richland in December?
What is the month with the shortest days in Richland?
How many hours of daylight does Richland have in December?
What time are sunrise and sunset in December in Richland?
How long on average sun shines in December in Richland?
How high is the UV index in December in Richland?
Average temperature in December
Richland, IA
- Average high temperature in December: 35.2°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in December
Richland, 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 (29.9"Hg).
Average wind speed in December
Richland, IA
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Richland, IA
- Average humidity in December: 79%
The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Richland, IA
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and December (1.18").
Average rainfall days in December
Richland, IA
- Average rainfall days in December: 7.1 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in December
Richland, IA
- Average snowfall in December: 1.65"
The months with the highest snowfall are January and February (4.33").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Richland, IA
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Richland, IA
- Average daylight in December: 9h and 2min
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 18min).
- Average sunshine in December: 4h and 3min
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
Richland, IA
- Average sunshine days in December: 18 days
The months with the most sunshine days are October and November (18.8 days).
The month with the least sunshine days is May (11 days).
Average UV index in December
Richland, IA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Richland, IA
- Average cloud cover in December: 52
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in December
Richland, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Richland, Iowa, USA
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