Idaho weather in January

Thinking about venturing to Idaho this January and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What is the weather like in Idaho in January?

Idaho is a region in the United States of America. January in Idaho generally has temperatures that range from very cold to cold, with precipitation levels ranging from low to high. In January, it is winter.

During the day temperatures vary from very cold in Driggs at -2°C to cold in Lewiston at 6°C. At night it cools down to -1°C in Lewiston and -13°C in Driggs. Typically, it's the chilliest month of the year. Making it a great time for staying indoors and enjoying the warmth. Make sure you're prepared by packing the right winter outfits.

In January, precipitation varies across different areas. From low snowfall in Salmon with an average of 11 mm to high snowfall in Wallace with 152 mm. Boise enjoys a balanced 111 hours of sunlight. Ensuring it's neither too overcast nor too sunny.

For specific regional insights in Idaho for January, refer to the map provided below. For an in-depth overview of the yearly weather conditions, do visit our Idaho climate page.

Where to go in Idaho in January

Weather conditions Weather

Temperatures

Precipitation

Map not visible? Whoops sorry! Please refresh the page.

Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations in Idaho

What is the weather like in January for the 5 most popular destinations in Idaho?

Average weather in Boise

In January Boise generally has low temperatures with maximum daytime temperatures around 4°C, minimum nighttime temperatures around -5°C and moderate monthly snow/rainfall. So on average the conditions are poor that month.

Boise

Max temperature Max temp

Min temperature Min temp

Monthly sun hours Sun hours

Monthly snow/rainfall Snow/rainfall

Monthly rainy days Rainy days

Weather conditions Weather

<<   December December
<<  

4°C 

-5°C 

103 hours 

49 mm 

14 days 

poor 

January January

4°C 

-5°C 

111 hours 

34 mm 

11 days 

poor 

February   >> February
>>  

8°C 

-2°C 

150 hours 

25 mm 

9 days 

unpleasant 

Climate in Boise

Average weather in Coeur d'Alene

In January Coeur d'Alene generally has low temperatures with maximum daytime temperatures around 3°C, minimum nighttime temperatures around -4°C and moderate monthly snow/rainfall. So on average the conditions are poor that month.

Coeur d'Alene

Max temperature Max temp

Min temperature Min temp

Monthly sun hours Sun hours

Monthly snow/rainfall Snow/rainfall

Monthly rainy days Rainy days

Weather conditions Weather

<<   December December
<<  

2°C 

-4°C 

60 hours 

98 mm 

17 days 

poor 

January January

3°C 

-4°C 

78 hours 

88 mm 

16 days 

poor 

February   >> February
>>  

5°C 

-3°C 

120 hours 

46 mm 

13 days 

poor 

Climate in Coeur d'Alene

Average weather in Idaho Falls

In January Idaho Falls generally has very low temperatures with maximum daytime temperatures around -2°C, minimum nighttime temperatures around -11°C and low monthly snowfall. So on average the conditions are poor that month.

Idaho Falls

Max temperature Max temp

Min temperature Min temp

Monthly snowfall Snowfall

Monthly rainy days Rainy days

Weather conditions Weather

<<   December December
<<  

-0°C 

-10°C 

24 mm 

10 days 

poor 

January January

-2°C 

-11°C 

22 mm 

9 days 

poor 

February   >> February
>>  

1°C 

-9°C 

14 mm 

7 days 

poor 

Climate in Idaho Falls

Average weather in Ketchum

In January Ketchum generally has very low temperatures with maximum daytime temperatures around 1°C, minimum nighttime temperatures around -12°C and moderate monthly snow/rainfall. So on average the conditions are poor that month.

Ketchum

Max temperature Max temp

Min temperature Min temp

Monthly snow/rainfall Snow/rainfall

Monthly rainy days Rainy days

Weather conditions Weather

<<   December December
<<  

-0°C 

-11°C 

83 mm 

15 days 

poor 

January January

1°C 

-12°C 

50 mm 

12 days 

poor 

February   >> February
>>  

3°C 

-10°C 

36 mm 

10 days 

poor 

Climate in Ketchum

Average weather in Pocatello

In January Pocatello generally has very low temperatures with maximum daytime temperatures around 1°C, minimum nighttime temperatures around -8°C and low monthly snow/rainfall. So on average the conditions are poor that month.

Pocatello

Max temperature Max temp

Min temperature Min temp

Monthly snow/rainfall Snow/rainfall

Monthly rainy days Rainy days

Weather conditions Weather

<<   December December
<<  

2°C 

-7°C 

32 mm 

13 days 

poor 

January January

1°C 

-8°C 

28 mm 

11 days 

poor 

February   >> February
>>  

4°C 

-6°C 

20 mm 

9 days 

poor 

Climate in Pocatello

Is your destination not in the list? Have a look at other destinations in Idaho, in the United States of America.

Is January the best time to visit Idaho?

In our opinion, January may not be the ideal time to visit Idaho due to the typically poor weather in Boise.

On average, the best time to visit Idaho is in May, June, August, September and October with generally perfect weather in Boise. On the other hand, the months of January, November and December tend to have poor weather conditions.