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 shift into January reveals an average high-temperature of a still subzero cold 26.1°F (-3.3°C), closely mirroring December's climate. January nights in Irwin are marked by an average temperature drop to an extreme cold 7.3°F (-13.7°C).Humidity
In January, the average relative humidity in Irwin is 93%.Rainfall
In January, the rain falls for 4.6 days. Throughout January, 2.64" (67mm) of precipitation is accumulated. Throughout the year, there are 127 rainfall days, and 24.29" (617mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In Irwin, during January, snow falls for 20.6 days and regularly aggregates up to 22.09" (561mm) of snow. Throughout the year, in Irwin, there are 126.6 snowfall days, and 110.28" (2801mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 24min.On the first day of January in Irwin, sunrise is at 7:57 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:34 pm MST.
Sunshine
In January, the average sunshine is 4.1h.UV index
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Irwin. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 1 during January translates into these guidelines:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
How cold is it in Irwin in January?
What is the average humidity in January in Irwin?
How much does it rain in Irwin in January?
How many days does it snow in January in Irwin?
What is the average length of the day in January in Irwin?
When are sunrise and sunset in January in Irwin?
How long on average sun shines in January in Irwin?
What are the months with the lowest UV index in Irwin?
What is the UV index reading in January in Irwin?
Average temperature in January
Irwin, ID
- Average high temperature in January: 26.1°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is December (24.3°F).
- Average low temperature in January: 7.3°F
The months with the highest average low temperature are July and August (45.3°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in January
Irwin, ID
- Average pressure in January: 30.28"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Irwin, ID
- Average wind speed in January: 4.3mph
The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).
Average humidity in January
Irwin, ID
- Average humidity in January: 93%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (46%).
Average rainfall in January
Irwin, ID
- Average rainfall in January: 2.64"
The wettest month (with the highest rainfall) is February (2.91").
The driest month (with the least rainfall) is July (0.91").
Average rainfall days in January
Irwin, ID
- Average rainfall days in January: 4.6 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in January
Irwin, ID
- Average snowfall in January: 22.09"
The month with the highest snowfall is February (22.91").
The months with the least snowfall are July and August (0").
Average snowfall days in January
Irwin, ID
- Average snowfall days in January: 20.6 days
The months with the highest number of snowfall days are February and December (22.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
Irwin, 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: 4h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in January
Irwin, ID
- Average sunshine days in January: 10.4 days
The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is April (5.3 days).
Average UV index in January
Irwin, ID
- Average UV index in January: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in January
Irwin, ID
- Average cloud cover in January: 61
The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in January
Irwin, ID
- Average visibility in January: 3mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (3mi).
Irwin, Idaho, USA
Weather forecast for your location
2. Allow the app to use your location
