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 implies a soft temperature shift, with average high-temperatures reducing from November's cool 52.3°F (11.3°C) to a frosty 43.5°F (6.4°C). Helena witnesses a consistent average low-temperature of 31.3°F (-0.4°C) throughout December.Humidity
February and December, with an average relative humidity of 81%, are the most humid months in Helena.Rainfall
In Helena, Kentucky, in December, it is raining for 10.8 days, with typically 1.46" (37mm) of accumulated precipitation. Throughout the year, in Helena, there are 143.3 rainfall days, and 17.36" (441mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Helena, during December, snow falls for 6.1 days and regularly aggregates up to 0.75" (19mm) of snow. Throughout the year, there are 30.6 snowfall days, and 5.16" (131mm) of snow is accumulated.Daylight
The month with the shortest days in Helena is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:34 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 5:24 pm EST.
Sunshine
The average sunshine in December is 4.1h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: During December, 2 as the daily maximum UV index converts into the following advice:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in Helena during December?
What is the most humid month in Helena?
What is the average humidity in December in Helena?
How much does it rain in Helena in December?
How much does it snow in Helena in December?
What is the month with the shortest days in Helena?
How many hours of daylight does Helena have in December?
When are sunrise and sunset in December in Helena?
How many hours of sunshine does Helena have in December?
What is the month with the lowest UV index in Helena?
What is the UV index reading in December in Helena?
Average temperature in December
Helena, KY
- Average high temperature in December: 43.5°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 31.3°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in December
Helena, KY
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Helena, KY
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Helena, KY
- Average humidity in December: 81%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is August (75%).
Average rainfall in December
Helena, KY
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is July (1.93").
The driest months (with the least rainfall) are January, September and October (1.06").
Average rainfall days in December
Helena, KY
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is November (8.3 days).
Average snowfall in December
Helena, KY
- Average snowfall in December: 0.75"
The month with the highest snowfall is February (1.46").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Helena, KY
- Average snowfall days in December: 6.1 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Helena, KY
- 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: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Helena, KY
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is February (11.4 days).
Average UV index in December
Helena, KY
- 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
Helena, KY
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Helena, KY
- Average visibility in December: 6mi
The months with the highest visibility are March, April, June, August, October, November and December (6mi).
The months with the lowest visibility are January, February, May, July and September (5mi).
Helena, Kentucky, USA
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