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 the transition to December, Harrisville observes a drop in the average high-temperature, moving from a chilly 43.5°F (6.4°C) in November to an icy 32.7°F (0.4°C). An average low-temperature of 22.1°F (-5.5°C) is noted during the nights in December in Harrisville, New Hampshire.Humidity
In Harrisville, the average relative humidity in December is 83%.Rainfall
In Harrisville, in December, during 8.6 rainfall days, 3.07" (78mm) of precipitation is typically accumulated. In Harrisville, during the entire year, the rain falls for 141.7 days and collects up to 32.09" (815mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Harrisville, in December, during 10.4 snowfall days, 7.87" (200mm) of snow is typically accumulated. In Harrisville, during the entire year, snow falls for 59.9 days and aggregates up to 47.95" (1218mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:00 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:24 pm EST.
Sunshine
In Harrisville, the average sunshine in December is 4.1h.UV index
The months with the lowest UV index are February and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 1 during December translates into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December in Harrisville?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Harrisville, NH
- Average high temperature in December: 32.7°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in December: 22.1°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in December
Harrisville, NH
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Harrisville, NH
- Average wind speed in December: 7.6mph
The windiest months (with the highest average wind speed) are January and February (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Harrisville, NH
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is April (74%).
Average rainfall in December
Harrisville, NH
- Average rainfall in December: 3.07"
The wettest month (with the highest rainfall) is October (3.39").
The driest month (with the least rainfall) is August (2.28").
Average rainfall days in December
Harrisville, NH
- Average rainfall days in December: 8.6 days
The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is February (6 days).
Average snowfall in December
Harrisville, NH
- Average snowfall in December: 7.87"
The month with the highest snowfall is February (11.5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Harrisville, NH
- Average snowfall days in December: 10.4 days
The month with the highest number of snowfall days is February (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Harrisville, NH
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in December
Harrisville, NH
- Average sunshine days in December: 15.1 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is March (12 days).
Average UV index in December
Harrisville, NH
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in December
Harrisville, NH
- Average cloud cover in December: 54
The months with the most cloud cover are February and March (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Harrisville, NH
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Harrisville, New Hampshire, USA
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