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
In Nampa, Idaho, the lowest temperatures are generally noted in December, averaging a high of 36.5°F (2.5°C) and a low of 25.7°F (-3.5°C).Humidity
In December, the average relative humidity in Nampa, Idaho, is 76%.Rainfall
In December, the rain falls for 9.3 days. Throughout December, 1.42" (36mm) of precipitation is accumulated. In Nampa, Idaho, during the entire year, the rain falls for 98.5 days and collects up to 9.69" (246mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Nampa, Idaho, in December, during 6.6 snowfall days, 3.15" (80mm) of snow is typically accumulated. Throughout the year, in Nampa, there are 22.5 snowfall days, and 10.55" (268mm) of snow is accumulated.Daylight
December has the shortest days of the year in Nampa, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 8:00 am and sunset at 5:10 pm. On the last day of December, in Nampa, sunrise is at 8:19 am and sunset at 5:19 pm MST.
Sunshine
The months with the least sunshine in Nampa are January and December, with an average of 5.8h 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 low health risk from unsafe exposure to UV radiation for the ordinary person.Note: The average daily UV index of 2 in December transforms into the following instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Nampa?
How cold is December in Nampa?
What is the average humidity in December in Nampa?
How much does it rain in Nampa in December?
How many days does it snow in December in Nampa?
What is the month with the shortest days in Nampa?
How many hours of daylight does Nampa have in December?
When are sunrise and sunset in December in Nampa?
What is the month with the least sunshine in Nampa?
How long on average sun shines in December in Nampa?
What are the months with the lowest UV index in Nampa?
What is the UV index intensity in December in Nampa?
Average temperature in December
Nampa, ID
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is August (63.3°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in December
Nampa, ID
- Average pressure in December: 30.21"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Nampa, ID
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is January (5.8mph).
Average humidity in December
Nampa, ID
- Average humidity in December: 76%
The month with the highest relative humidity is January (78%).
The months with the lowest relative humidity are July and August (29%).
Average rainfall in December
Nampa, ID
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is March (1.46").
The driest months (with the least rainfall) are July and August (0.12").
Average rainfall days in December
Nampa, ID
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is August (3.1 days).
Average snowfall in December
Nampa, ID
- Average snowfall in December: 3.15"
The month with the highest snowfall is January (3.23").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Nampa, ID
- Average snowfall days in December: 6.6 days
The month with the highest number of snowfall days is December (6.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Nampa, ID
- 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 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 48min).
Average sunshine days in December
Nampa, ID
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is March (14 days).
Average UV index in December
Nampa, ID
- 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
Nampa, ID
- Average cloud cover in December: 39
The months with the most cloud cover are January and December (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in December
Nampa, ID
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Nampa, Idaho, USA
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