December weather forecastNyssa, OR
December
Weather in December
The first month of the winter, December, is still a cold month in Nyssa, Oregon, with temperature in the range of an average low of 23.9°F (-4.5°C) and an average high of 35.6°F (2°C).Temperature
In Nyssa, the lowest average temperatures are observed in December, with a high of 35.6°F (2°C) and a low of 23.9°F (-4.5°C).Humidity
The average relative humidity in December is 78%.Rainfall
The month with the most rainfall is December, when the rain falls for 9.1 days and typically aggregates up to 1.38" (35mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. December is the month with the most snowfall. Snow falls for 7.7 days and accumulates 4.84" (123mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 8:03 am and sunset at 5:11 pm. On the last day of December, sunrise is at 8:22 am and sunset at 5:20 pm MST.
Sunshine
The month with the least sunshine is December, with an average of 5.4h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Nyssa, OR
- Average high temperature in December: 35.6°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is December (35.6°F).
- Average low temperature in December: 23.9°F
The month with the highest average low temperature is August (63°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in December
Nyssa, OR
- Average pressure in December: 30.21"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).
Average wind speed in December
Nyssa, OR
- Average wind speed in December: 4.4mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is January (4mph).
Average humidity in December
Nyssa, OR
- Average humidity in December: 78%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (29%).
Average rainfall in December
Nyssa, OR
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is December (1.38").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in December
Nyssa, OR
- Average rainfall days in December: 9.1 days
The month with the highest number of rainy days is March (13.8 days).
The months with the least rainy days are July and August (2.6 days).
Average snowfall in December
Nyssa, OR
- Average snowfall in December: 4.84"
The month with the highest snowfall is December (4.84").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Nyssa, OR
- Average snowfall days in December: 7.7 days
The month with the highest number of snowfall days is December (7.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Nyssa, OR
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 5h and 24min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Nyssa, OR
- Average sunshine days in December: 17.1 days
The month with the most sunshine days is July (26.9 days).
The month with the least sunshine days is March (15.2 days).
Average UV index in December
Nyssa, OR
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Nyssa, OR
- Average cloud cover in December: 41
The month with the most cloud cover is December (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in December
Nyssa, OR
- Average visibility in December: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
