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 December, the meteorological conditions change slightly, with the average high-temperature moving from a comfortable 65.3°F (18.5°C) in November to a mild 58.5°F (14.7°C). An average low-temperature of 43.7°F (6.5°C) is observed during the December nights.Humidity
In Harriston, the average relative humidity in December is 81%.Rainfall
In Harriston, in December, it is raining for 12.5 days, with typically 3.19" (81mm) of accumulated precipitation. Throughout the year, in Harriston, there are 162.8 rainfall days, and 34.33" (872mm) of precipitation is accumulated.Snowfall
January, February and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.3 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 2 snowfall days, and 0.83" (21mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 10h and 6min of daylight.On the first day of December, sunrise is at 6:46 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 5:11 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 4.9h of sunshine.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index in Harriston. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The average daily UV index of 3 in December transforms into the following instructions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Harriston in December?
What is the average humidity in December in Harriston?
How many days does it rain in December in Harriston?
When does it start snowing in Harriston?
What is the month with the shortest days in Harriston?
What is the average length of the day in December in Harriston?
What time are sunrise and sunset in December in Harriston?
What is the month with the least sunshine in Harriston?
How long on average sun shines in December in Harriston?
When is the lowest UV index in Harriston?
What is the UV index intensity in December in Harriston?
Average temperature in December
Harriston, MS
- Average high temperature in December: 58.5°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (55.4°F).
- Average low temperature in December: 43.7°F
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).
Average pressure in December
Harriston, MS
- 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 (29.96"Hg).
Average wind speed in December
Harriston, MS
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is February (7.6mph).
The calmest months (with the lowest average wind speed) are August and September (4.9mph).
Average humidity in December
Harriston, MS
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Harriston, MS
- Average rainfall in December: 3.19"
The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days in December
Harriston, MS
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is August (19.5 days).
The month with the least rainy days is November (7.9 days).
Average snowfall in December
Harriston, MS
- Average snowfall in December: 0.12"
The month with the highest snowfall is January (0.43").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Harriston, MS
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is January (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Harriston, MS
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in December
Harriston, MS
- Average sunshine days in December: 16.2 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is August (9.2 days).
Average UV index in December
Harriston, MS
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in December
Harriston, MS
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in December
Harriston, MS
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).
Harriston, Mississippi, USA
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