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
The advent of January brings an average high-temperature of a still wintry 37°F (2.8°C), almost identical to the preceding month. Throughout January, Caldwell encounters an average temperature drop to a freezing cold 25.3°F (-3.7°C).Humidity
With an average relative humidity of 79%, January is the most humid month.Rainfall
In January, the rain falls for 9.8 days. Throughout January, 1.3" (33mm) of precipitation is accumulated. In Caldwell, Idaho, during the entire year, the rain falls for 103.7 days and collects up to 9.84" (250mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Caldwell, in January, snow falls for 5.6 days, with typically accumulated 2.8" (71mm) of snow. In Caldwell, during the entire year, snow falls for 22.2 days and aggregates up to 9.76" (248mm) of snow.Daylight
In January, the average length of the day is 9h and 23min.On the first day of the month, sunrise is at 8:20 am and sunset at 5:20 pm. On the last day of January, sunrise is at 8:04 am and sunset at 5:55 pm MST.
Sunshine
In Caldwell, Idaho, the average sunshine in January is 5.9h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Caldwell. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: In January, a regular UV index of 2 translates into these guidelines:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January in Caldwell?
What is the most humid month?
What is the average humidity in January?
How much does it rain in Caldwell in January?
How many days does it snow in January in Caldwell?
How many hours of daylight does Caldwell have in January?
When are sunrise and sunset in January?
How many hours of sunshine does Caldwell have in January?
When is the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Caldwell, ID
- Average high temperature in January: 37°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is December (36.3°F).
- Average low temperature in January: 25.3°F
The month with the highest average low temperature is August (62.8°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).
Average pressure in January
Caldwell, ID
- Average pressure in January: 30.25"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in January
Caldwell, ID
- Average wind speed in January: 5.2mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is January (5.2mph).
Average humidity in January
Caldwell, ID
- Average humidity in January: 79%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (29%).
Average rainfall in January
Caldwell, ID
- Average rainfall in January: 1.3"
The wettest month (with the highest rainfall) is March (1.38").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in January
Caldwell, ID
- Average rainfall days in January: 9.8 days
The month with the highest number of rainy days is March (15.1 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in January
Caldwell, ID
- Average snowfall in January: 2.8"
The month with the highest snowfall is December (3.35").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Caldwell, ID
- Average snowfall days in January: 5.6 days
The month with the highest number of snowfall days is December (7.2 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
Caldwell, 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 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in January
Caldwell, ID
- Average sunshine days in January: 17.6 days
The month with the most sunshine days is July (23.3 days).
The month with the least sunshine days is March (14.6 days).
Average UV index in January
Caldwell, 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
Caldwell, ID
- Average cloud cover in January: 38
The month with the most cloud cover is December (Cloud cover 39).
The months with the least cloud cover are July and August (Cloud cover 8).
Average visibility in January
Caldwell, 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).
Caldwell, Idaho, USA
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