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 sea temperature 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
The transition into December indicates a reduction in the average high-temperature, down to a wintry 37°F (2.8°C) from November's chilly 46.2°F (7.9°C). Throughout December, Ashtabula reports a steady low-temperature average of 29.8°F (-1.2°C), slightly lower than its daytime counterpart.Humidity
The average relative humidity in December in Ashtabula is 84%.Rainfall
In Ashtabula, during December, the rain falls for 10.9 days and regularly aggregates up to 2.72" (69mm) of precipitation. In Ashtabula, during the entire year, the rain falls for 181 days and collects up to 36.34" (923mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Ashtabula, in December, during 15.4 snowfall days, 5.08" (129mm) of snow is typically accumulated. Throughout the year, there are 71.4 snowfall days, and 25.28" (642mm) of snow is accumulated.Ocean temperature
In December, the average ocean temperature is 41.5°F (5.3°C).Note: It is risky to swim in 41.5°F (5.3°C). Temperatures beneath 50°F (10°C) induce rapid cold shock and hyperventilation.
Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:31 am and sunset at 4:53 pm. On the last day of December, sunrise is at 7:50 am and sunset at 5:02 pm EST.
Sunshine
In December, the average sunshine is 2.9h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, an average UV index of 1 transforms into the following instructions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
How cold is the water in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Ashtabula have in December?
When is the lowest UV index in Ashtabula?
What is the UV index reading in December?
Average temperature in December
Ashtabula, OH
- Average high temperature in December: 37°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 29.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in December
Ashtabula, OH
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Ashtabula, OH
- Average wind speed in December: 11.3mph
The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in December
Ashtabula, OH
- Average humidity in December: 84%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July, August and September (78%).
Average rainfall in December
Ashtabula, OH
- Average rainfall in December: 2.72"
The wettest month (with the highest rainfall) is June (3.94").
The driest months (with the least rainfall) are February and November (2.4").
Average rainfall days in December
Ashtabula, OH
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is August (18.8 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in December
Ashtabula, OH
- Average snowfall in December: 5.08"
The month with the highest snowfall is January (6.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Ashtabula, OH
- Average snowfall days in December: 15.4 days
The month with the highest number of snowfall days is January (18.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Ashtabula, OH
- Average sea temperature in December: 41.5°F
The best month for swimming (with the highest average sea temperature) is August (75.7°F).
The coldest month (with the lowest average sea temperature) is February (32.7°F).
Average daylight in December /
Average sunshine in December
Ashtabula, OH
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in December
Ashtabula, OH
- Average sunshine days in December: 6.7 days
The month with the most sunshine days is September (11 days).
The month with the least sunshine days is January (5.9 days).
Average UV index in December
Ashtabula, OH
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Ashtabula, OH
- Average cloud cover in December: 71
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Ashtabula, OH
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Ashtabula, Ohio, USA
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