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
The onset of December results in a decrease in the average high-temperature, receding from a frosty 45.3°F (7.4°C) in November to an icy 35.2°F (1.8°C). Romulus experiences a nighttime temperature average of 25.7°F (-3.5°C) during December.Humidity
The average relative humidity in December in Romulus is 84%.Rainfall
In Romulus, New York, in December, it is raining for 9.6 days, with typically 1.42" (36mm) of accumulated precipitation. Throughout the year, there are 163.9 rainfall days, and 21.34" (542mm) of precipitation is accumulated.Snowfall
Months with snowfall in Romulus are January through May, October through December. In Romulus, New York, during December, snow falls for 15 days and regularly aggregates up to 3.7" (94mm) of snow. In Romulus, New York, during the entire year, snow falls for 72.2 days and aggregates up to 18.23" (463mm) of snow.Daylight
The month with the shortest days in Romulus is December, with an average of 9h and 6min of daylight.On the first day of December in Romulus, sunrise is at 7:18 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 4:43 pm EST.
Sunshine
In Romulus, the average sunshine in December is 3.3h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: A daily maximum UV index of 1 in December translates into the following instructions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 it in Romulus in December?
What is the average humidity in December in Romulus?
How many days does it rain in December in Romulus?
How many days does it snow in December in Romulus?
What is the month with the shortest days in Romulus?
How many hours of daylight does Romulus have in December?
What time are sunrise and sunset in December in Romulus?
How long on average sun shines in December in Romulus?
What is the month with the lowest UV index in Romulus?
What is the UV index reading in December in Romulus?
Average temperature in December
Romulus, NY
- Average high temperature in December: 35.2°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Romulus, NY
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Romulus, NY
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
Romulus, NY
- Average humidity in December: 84%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Romulus, NY
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is July (2.44").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in December
Romulus, NY
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is July (18.3 days).
The months with the least rainy days are January and February (7.8 days).
Average snowfall in December
Romulus, NY
- Average snowfall in December: 3.7"
The month with the highest snowfall is February (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Romulus, NY
- Average snowfall days in December: 15 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Romulus, NY
- 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: 3h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).
Average sunshine days in December
Romulus, NY
- Average sunshine days in December: 8.5 days
The month with the most sunshine days is September (13.4 days).
The month with the least sunshine days is February (6.7 days).
Average UV index in December
Romulus, NY
- 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 January and December (UV index 1).
Average cloud cover in December
Romulus, NY
- Average cloud cover in December: 67
The months with the most cloud cover are January and February (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Romulus, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, October and November (6mi).
The months with the lowest visibility are January, February, March, September and December (5mi).
Romulus, New York, USA
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