The weather in January in Idaho

It's cold in January in Idaho with an average temperature of -1°C. Temperatures this month range from a low of -8°C to a high of 1°C. At night, you can expect temperatures between -20°C and -9°C.

Looking for sun? January isn’t a good month to be in Idaho. There’s too much chance of rain this month.

Average temperatures and precipitation

This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in January for Idaho, United States. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.

Temperature records

With 9°C in 2018, Idaho reached the highest temperature in January over the past 10 years. The lowest daytime temperature in this month was -20°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of -34°C to a highest value of 2°C.

Precipitation and snowfall

In January, there is an average of 130 mm of precipitation, spread over 15 days. Of the total precipitation, about 113 cm falls as snow in January. The wind speed is around 3 Bft, mostly coming from the Southeast.

Daily weather in January for Idaho

Click on any day in January to get detailed info about the usual weather on that day in Idaho. Check out the historical temperatures and precipitation over the past 10 years on this day.

January weather comparison

  Idaho New York
Average temperature -1°C 5°C
Max. temperature 1°C 11°C
Min. temperature -20°C -5°C
Total precipitation 130 mm 97 mm
Rainy days 15 days 12 days
Total snowfall 113 cm 16 cm
Snowy days 27 days 8 days

Start of January

The month of January starts in Idaho with really cold temps, averaging around -2°C during the day and nights dipping to about -13°C.

Mid January

By mid-January, daytime temps rise to around -1°C, with nights around -13°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.

End of January

By the end of January, the average daytime temperature in Idaho is around -0°C, while nighttime temps are about -13°C. A shower might pop up, but overall, the weather will be dry and sunny.

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UV index

The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.

Check out the climate of Idaho for all months and discover the best travel time

The climate in Idaho is based on weather data from . Other places, like New York City, Miami or Los Angeles, might have different weather. You can check out all destinations in Idaho to get the full picture of the climate.

Temperature charts

These charts show the average temperatures in January in Idaho, United States. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.

Daily Temperature in January in Idaho

Temperature in January in Idaho over the years

Precipitation charts

These charts show the average amount of precipitation in January in Idaho, United States. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.

Daily Precipitation in January in Idaho

Total precipitation in January in Idaho over the years

Daily Snowfall in January in Idaho

Snowfall in January in Idaho per year

Daily UV index in January in Idaho

This chart shows the average daily UV index in January in Idaho, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.

Weather experiences in January in Idaho

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Average weather in Idaho by month

Click on a month below to see detailed weather info for Idaho. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.