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
December stands out as Grandview's coldest month, with temperatures ranging between an average high of 36.5°F (2.5°C) and a low of 26.2°F (-3.2°C).Humidity
The average relative humidity in December in Grandview is 80%.Rainfall
In December, the rain falls for 6.3 days. Throughout December, 0.43" (11mm) of precipitation is accumulated. In Grandview, Washington, during the entire year, the rain falls for 80.1 days and collects up to 4.84" (123mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Grandview, in December, during 3.9 snowfall days, 1.18" (30mm) of snow is typically accumulated. In Grandview, during the entire year, snow falls for 12.4 days and aggregates up to 3.94" (100mm) of snow.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year.On the first day of December in Grandview, sunrise is at 7:22 am and sunset at 4:15 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:23 pm PST.
Sunshine
In Grandview, the average sunshine in December is 5.3h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
What are the coldest months in Grandview?
How cold is December in Grandview?
What is the average humidity in December in Grandview?
How much does it rain in Grandview in December?
How many days does it snow in December in Grandview?
What is the month with the shortest days in Grandview?
How many hours of daylight does Grandview have in December?
When are sunrise and sunset in December in Grandview?
How long on average sun shines in December in Grandview?
When is the lowest UV index in Grandview?
What is the UV index intensity in December in Grandview?
Average temperature in December
Grandview, WA
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in December: 26.2°F
The month with the highest average low temperature is August (62.2°F).
The coldest month (with the lowest average low temperature) is December (26.2°F).
Average pressure in December
Grandview, WA
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in December
Grandview, WA
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is December (5.2mph).
Average humidity in December
Grandview, WA
- Average humidity in December: 80%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is July (37%).
Average rainfall in December
Grandview, WA
- Average rainfall in December: 0.43"
The wettest month (with the highest rainfall) is May (0.71").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in December
Grandview, WA
- Average rainfall days in December: 6.3 days
The month with the highest number of rainy days is May (9.2 days).
The month with the least rainy days is July (4 days).
Average snowfall in December
Grandview, WA
- Average snowfall in December: 1.18"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Grandview, WA
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is December (3.9 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Grandview, WA
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 5h and 2min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in December
Grandview, WA
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is February (18.7 days).
Average UV index in December
Grandview, WA
- 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
Grandview, WA
- Average cloud cover in December: 46
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in December
Grandview, WA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Grandview, Washington, USA
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