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
Monaca's December weather features a mild decline in high-temperatures, reducing from a chilly 48.6°F (9.2°C) in November to an icy 38.5°F (3.6°C). Monaca records an average nighttime low-temperature of 27.5°F (-2.5°C) throughout December.Humidity
In Monaca, the average relative humidity in December is 85%.Rainfall
In Monaca, in December, it is raining for 11.5 days, with typically 1.57" (40mm) of accumulated precipitation. In Monaca, during the entire year, the rain falls for 168.7 days and collects up to 21.22" (539mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Monaca, in December, snow falls for 12 days, with typically accumulated 2.44" (62mm) of snow. In Monaca, during the entire year, snow falls for 60.6 days and aggregates up to 11.93" (303mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Monaca.On the first day of the month, sunrise is at 7:26 am and sunset at 4:54 pm. On the last day of December, in Monaca, sunrise is at 7:44 am and sunset at 5:03 pm EST.
Sunshine
In December, the average sunshine is 3.3h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 1 during December translates into these guidelines:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
Is December cold in Monaca?
What is the average humidity in December in Monaca?
How many days does it rain in December in Monaca?
How many days does it snow in December in Monaca?
What is the month with the shortest days in Monaca?
How many hours of daylight does Monaca have in December?
When are sunrise and sunset in December in Monaca?
How long on average sun shines in December in Monaca?
What is the month with the lowest UV index in Monaca?
What is the UV index reading in December in Monaca?
Average temperature in December
Monaca, PA
- Average high temperature in December: 38.5°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in December
Monaca, PA
- Average pressure in December: 30.1"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
Monaca, PA
- Average wind speed in December: 7.4mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in December
Monaca, PA
- Average humidity in December: 85%
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
Monaca, PA
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is November (1.1").
Average rainfall days in December
Monaca, PA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (10 days).
Average snowfall in December
Monaca, PA
- Average snowfall in December: 2.44"
The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Monaca, PA
- Average snowfall days in December: 12 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Monaca, PA
- 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 54min).
Average sunshine days in December
Monaca, PA
- Average sunshine days in December: 10.6 days
The month with the most sunshine days is November (15.1 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in December
Monaca, PA
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Monaca, PA
- 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 34).
Average visibility in December
Monaca, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Monaca, Pennsylvania, USA
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