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
A moderate decline in the average high-temperature is seen during December, decreasing from a chilly 48.2°F (9°C) in November to a wintry 38.3°F (3.5°C). December brings with it a nighttime average temperature of 27.1°F (-2.7°C).Humidity
In December, the average relative humidity is 84%.Rainfall
In East Rochester, in December, it is raining for 11 days, with typically 2.44" (62mm) of accumulated precipitation. In East Rochester, during the entire year, the rain falls for 175.9 days and collects up to 31.06" (789mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In East Rochester, in December, snow falls for 13.2 days, with typically accumulated 4.53" (115mm) of snow. In East Rochester, during the entire year, snow falls for 65.9 days and aggregates up to 23.86" (606mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:29 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 5:06 pm EST.
Sunshine
In East Rochester, the average sunshine in December is 3.4h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: An average maximum UV index of 1 in December leads to these recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in East Rochester in December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does East Rochester have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
East Rochester, OH
- Average high temperature in December: 38.3°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 27.1°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in December
East Rochester, OH
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
East Rochester, OH
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in December
East Rochester, OH
- Average humidity in December: 84%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in December
East Rochester, OH
- Average rainfall in December: 2.44"
The wettest months (with the highest rainfall) are April and June (3.03").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in December
East Rochester, OH
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is February (9.2 days).
Average snowfall in December
East Rochester, OH
- Average snowfall in December: 4.53"
The month with the highest snowfall is February (5.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
East Rochester, OH
- Average snowfall days in December: 13.2 days
The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
East Rochester, OH
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in December
East Rochester, OH
- Average sunshine days in December: 10.3 days
The month with the most sunshine days is November (13.6 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in December
East Rochester, 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
East Rochester, OH
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
East Rochester, OH
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January and February (4mi).
East Rochester, Ohio, USA
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