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
Chillicothe's December weather features a mild decline in high-temperatures, reducing from a frosty 47.8°F (8.8°C) in November to a wintry 35.1°F (1.7°C). December in Chillicothe generally records an average low-temperature of 23.9°F (-4.5°C).Humidity
The average relative humidity in December in Chillicothe is 79%.Rainfall
In Chillicothe, in December, during 6.8 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. In Chillicothe, Iowa, during the entire year, the rain falls for 134.5 days and collects up to 27.17" (690mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Chillicothe. In Chillicothe, in December, during 6.5 snowfall days, 1.57" (40mm) of snow is typically accumulated. In Chillicothe, during the entire year, snow falls for 33.5 days and aggregates up to 14.17" (360mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December in Chillicothe, Iowa, sunrise is at 7:16 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:51 pm CST.
Sunshine
In Chillicothe, Iowa, the average sunshine in December is 4.7h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
How cold is December in Chillicothe?
What is the average humidity in December in Chillicothe?
How many days does it rain in December in Chillicothe?
How many days does it snow in December in Chillicothe?
What is the month with the shortest days in Chillicothe?
What is the average length of the day in December in Chillicothe?
When is the sunrise / sunset in December in Chillicothe?
How long on average sun shines in December in Chillicothe?
What is the month with the lowest UV index in Chillicothe?
How high is the UV index in December in Chillicothe?
Average temperature in December
Chillicothe, IA
- Average high temperature in December: 35.1°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in December: 23.9°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 (16.2°F).
Average pressure in December
Chillicothe, IA
- Average pressure in December: 30.12"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
Chillicothe, IA
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in December
Chillicothe, IA
- Average humidity in December: 79%
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Chillicothe, IA
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in December
Chillicothe, IA
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in December
Chillicothe, IA
- Average snowfall in December: 1.57"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Chillicothe, IA
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Chillicothe, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Chillicothe, IA
- Average sunshine days in December: 18.9 days
The month with the most sunshine days is December (18.9 days).
The month with the least sunshine days is May (11.6 days).
Average UV index in December
Chillicothe, IA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Chillicothe, IA
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in December
Chillicothe, 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).
Chillicothe, Iowa, USA
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