Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
Nampa experiences a minor change to a still wintry 37.9°F (3.3°C) in average high-temperature during January, closely reflecting December. In the month of January, Nampa witnesses a consistent average low-temperature of 26.1°F (-3.3°C).Humidity
With an average relative humidity of 78%, January is the most humid month.Rainfall
In Nampa, in January, it is raining for 9.9 days, with typically 1.38" (35mm) of accumulated precipitation. Throughout the year, there are 98.5 rainfall days, and 9.69" (246mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. January is the month with the most snowfall. Snow falls for 6.1 days and accumulates 3.23" (82mm) of snow.Daylight
In January, the average length of the day in Nampa, Idaho, is 9h and 23min.On the first day of January, sunrise is at 8:19 am and sunset at 5:20 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 5:55 pm MST.
Sunshine
The months with the least sunshine are January and December, with an average of 5.8h of sunshine.UV index
The months with the lowest UV index in Nampa are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In January, the maximum UV index of 2 suggests this advice:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is January cold in Nampa?
What is the most humid month in Nampa?
What is the average humidity in January in Nampa?
How many days does it rain in January in Nampa?
What is the snowiest month in Nampa?
How much does it snow in Nampa in January?
What is the average length of the day in January in Nampa?
When is the sunrise / sunset in January in Nampa?
What are the months with the least sunshine in Nampa?
How many hours of sunshine does Nampa have in January?
What is the month with the lowest UV index in Nampa?
What is the UV index reading in January in Nampa?
Average temperature in January
Nampa, ID
- Average high temperature in January: 37.9°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 January: 26.1°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 January
Nampa, ID
- Average pressure in January: 30.25"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 January
Nampa, ID
- Average wind speed in January: 5.8mph
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 January
Nampa, ID
- Average humidity in January: 78%
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 January
Nampa, ID
- Average rainfall in January: 1.38"
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 January
Nampa, ID
- Average rainfall days in January: 9.9 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 January
Nampa, ID
- Average snowfall in January: 3.23"
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 January
Nampa, ID
- Average snowfall days in January: 6.1 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 January /
Average sunshine in January
Nampa, ID
- Average daylight in January: 9h and 2min
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 January: 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 January
Nampa, ID
- Average sunshine days in January: 17.2 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 January
Nampa, ID
- Average UV index in January: 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 January
Nampa, ID
- Average cloud cover in January: 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 January
Nampa, ID
- Average visibility in January: 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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