December weather forecastFort Johnson, NY
December
Weather in December
The first month of the winter, December, is still a cold month in Fort Johnson, New York, with temperature in the range of an average low of 23.9°F (-4.5°C) and an average high of 33.6°F (0.9°C).Temperature
As November transitions into December, Fort Johnson sees a drop in the average high-temperature, transitioning from a chilly 44.6°F (7°C) to a cold 33.6°F (0.9°C). An average low-temperature of 23.9°F (-4.5°C) is recorded in the month of December in Fort Johnson.Humidity
The average relative humidity in December is 82%.Rainfall
In December, in Fort Johnson, the rain falls for 7.5 days. Throughout December, 1.46" (37mm) of precipitation is accumulated. In Fort Johnson, New York, during the entire year, the rain falls for 122.4 days and collects up to 18.78" (477mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Fort Johnson, in December, during 6 snowfall days, 3.43" (87mm) of snow is typically accumulated. In Fort Johnson, during the entire year, snow falls for 33.8 days and aggregates up to 16.57" (421mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December in Fort Johnson, sunrise is at 7:08 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:32 pm EST.
Sunshine
In Fort Johnson, the average sunshine in December is 4h.UV index
The months with the lowest UV index in Fort Johnson are February and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Fort Johnson, NY
- Average high temperature in December: 33.6°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in December: 23.9°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in December
Fort Johnson, NY
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Fort Johnson, NY
- Average wind speed in December: 7.7mph
The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Fort Johnson, NY
- Average humidity in December: 82%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (74%).
Average rainfall in December
Fort Johnson, NY
- Average rainfall in December: 1.46"
The wettest months (with the highest rainfall) are May and October (2.01").
The driest month (with the least rainfall) is March (1.14").
Average rainfall days in December
Fort Johnson, NY
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in December
Fort Johnson, NY
- Average snowfall in December: 3.43"
The month with the highest snowfall is January (4.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Fort Johnson, NY
- Average snowfall days in December: 6 days
The month with the highest number of snowfall days is February (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Fort Johnson, NY
- Average daylight in December: 9h and 6min
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: 4h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in December
Fort Johnson, NY
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is November (19.8 days).
The months with the least sunshine days are April, May and July (14.3 days).
Average UV index in December
Fort Johnson, NY
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in December
Fort Johnson, NY
- Average cloud cover in December: 57
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in December
Fort Johnson, NY
- Average visibility in December: 6mi
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).
