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
As Iona steps into January, the average high-temperature holds at a still freezing cold 28°F (-2.2°C), hinting at a minor fluctuation from the prior month. The month of January records an average low-temperature of 14.2°F (-9.9°C).Humidity
The most humid month is January, with an average relative humidity of 90%.Rainfall
In Iona, in January, it is raining for 3.7 days, with typically 0.51" (13mm) of accumulated precipitation. In Iona, during the entire year, the rain falls for 84.3 days and collects up to 6.97" (177mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. The month with the most snowfall is January, when snow falls for 12.8 days and typically aggregates up to 3.86" (98mm) 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 8:00 am and sunset at 5:01 pm. On the last day of January, sunrise is at 7:45 am and sunset at 5:37 pm MST.
Sunshine
January has the least sunshine of the year, with an average of 4.7h of sunshine.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In January, the maximum UV index of 2 suggests this advice:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
How much does it rain in Iona in January?
What is the snowiest month?
How many days does it snow in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Iona have in January?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Iona, ID
- Average high temperature in January: 28°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (27.9°F).
- Average low temperature in January: 14.2°F
The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is January (14.2°F).
Average pressure in January
Iona, ID
- Average pressure in January: 30.3"Hg
The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Iona, ID
- Average wind speed in January: 5.8mph
The windiest month (with the highest average wind speed) is April (9mph).
The calmest month (with the lowest average wind speed) is January (5.8mph).
Average humidity in January
Iona, ID
- Average humidity in January: 90%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (35%).
Average rainfall in January
Iona, ID
- Average rainfall in January: 0.51"
The wettest months (with the highest rainfall) are May and September (0.83").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in January
Iona, ID
- Average rainfall days in January: 3.7 days
The month with the highest number of rainy days is May (10.7 days).
The month with the least rainy days is January (3.7 days).
Average snowfall in January
Iona, ID
- Average snowfall in January: 3.86"
The month with the highest snowfall is January (3.86").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Iona, ID
- Average snowfall days in January: 12.8 days
The month with the highest number of snowfall days is December (12.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Iona, 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 4min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in January
Iona, ID
- Average sunshine days in January: 18.4 days
The month with the most sunshine days is October (22.1 days).
The month with the least sunshine days is February (16.2 days).
Average UV index in January
Iona, ID
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in January
Iona, ID
- Average cloud cover in January: 51
The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in January
Iona, ID
- Average visibility in January: 4mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Iona, Idaho, USA
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