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
December suggests a modest reduction in the average high-temperature, shifting from a fresh 54.3°F (12.4°C) in November to a frosty 43°F (6.1°C). Hartwell sees an average low-temperature of 29.1°F (-1.6°C) during December.Humidity
In Hartwell, the average relative humidity in December is 74%.Rainfall
In December, in Hartwell, the rain falls for 6.9 days. Throughout December, 1.65" (42mm) of precipitation is accumulated. In Hartwell, during the entire year, the rain falls for 141.5 days and collects up to 30.67" (779mm) of precipitation.Snowfall
Months with snowfall are January through March, May, October through December. In December, it is snowing for 2.6 days. Throughout December, 1.34" (34mm) of snow is accumulated. In Hartwell, during the entire year, snow falls for 14.7 days and aggregates up to 7.64" (194mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:14 am and sunset at 4:55 pm. On the last day of December, in Hartwell, Missouri, sunrise is at 7:32 am and sunset at 5:05 pm CST.
Sunshine
In December, the average sunshine in Hartwell, Missouri, is 5.5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Hartwell. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 2 during December translates into the following directions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold in Hartwell?
What is the average humidity in December in Hartwell?
How many days does it rain in December in Hartwell?
How many days does it snow in December in Hartwell?
What is the month with the shortest days in Hartwell?
What is the average length of the day in December in Hartwell?
When is the sunrise / sunset in December in Hartwell?
How long on average sun shines in December in Hartwell?
When is the lowest UV index in Hartwell?
How high is the UV index in December in Hartwell?
Average temperature in December
Hartwell, MO
- Average high temperature in December: 43°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in December: 29.1°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in December
Hartwell, MO
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Hartwell, MO
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in December
Hartwell, MO
- Average humidity in December: 74%
The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are October and November (72%).
Average rainfall in December
Hartwell, MO
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is May (4.72").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in December
Hartwell, MO
- Average rainfall days in December: 6.9 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in December
Hartwell, MO
- Average snowfall in December: 1.34"
The month with the highest snowfall is February (2.76").
The months with the least snowfall are April, June, July, August and September (0").
Average snowfall days in December
Hartwell, MO
- Average snowfall days in December: 2.6 days
The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hartwell, MO
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in December
Hartwell, MO
- Average sunshine days in December: 21.1 days
The months with the most sunshine days are January and December (21.1 days).
The month with the least sunshine days is June (12.1 days).
Average UV index in December
Hartwell, MO
- Average UV index in December: 2
The months with the highest UV index are May, 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
Hartwell, MO
- Average cloud cover in December: 41
The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are June, July and August (Cloud cover 26).
Average visibility in December
Hartwell, MO
- 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).
Hartwell, Missouri, USA
Weather forecast for your location
2. Allow the app to use your location