Idaho month by month
The next 12 months outside in Idaho: what the weather usually does in Boise, Idaho Falls and Coeur d'Alene, and what's already on the calendar. Races and programs further out are still being posted, so the later months fill in over time.
October 2026
13 events listed
- Boise
- 65° / 42°
- Rain or snow 1 day in 5
- Idaho Falls
- 59° / 35°
- Rain or snow 1 day in 5
- Coeur d'Alene
- 58° / 39°
- Rain or snow 1 day in 3
- Hayden Lake MarathonSat, Oct 10 · 7:30 AM · marathon · Hayden Lake
- Haunted Half Marathon and 5k by Run the UndergradSat, Oct 24 · 10:00 AM · half marathon, 5K · S 2nd W & 3rd W, Rexburg
- Play it Again Sports Disc Golf Event at Eagle Island State ParkSat, Oct 17 · 8:00 AM · Ranger program · Eagle Island State Park
November 2026
15 events listed
- Boise
- 49° / 32°
- Rain or snow 1 day in 3; snow 1 day in 13
- Idaho Falls
- 43° / 25°
- Rain or snow 1 day in 4
- Coeur d'Alene
- 44° / 32°
- Rain or snow about half the days
December 2026
3 events listed
- Boise
- 39° / 25°
- Rain or snow 1 day in 3; snow 1 day in 6
- Idaho Falls
- 31° / 17°
- Rain or snow 1 day in 3
- Coeur d'Alene
- 36° / 26°
- Rain or snow about half the days
Listings for December are still coming in. Check back closer to the date.
January 2027
2 events listed
- Boise
- 39° / 26°
- Rain or snow 1 day in 3; snow 1 day in 6
- Idaho Falls
- 30° / 16°
- Rain or snow 1 day in 3
- Coeur d'Alene
- 36° / 26°
- Rain or snow about half the days
Listings for January are still coming in. Check back closer to the date.
February 2027
1 event listed
- Boise
- 46° / 29°
- Rain or snow 1 day in 3; snow 1 day in 8
- Idaho Falls
- 36° / 20°
- Rain or snow 1 day in 3
- Coeur d'Alene
- 41° / 27°
- Rain or snow 1 day in 3
Listings for February are still coming in. Check back closer to the date.
March 2027
1 event listed
- Boise
- 55° / 35°
- Rain or snow 1 day in 3; snow 1 day in 17
- Idaho Falls
- 48° / 29°
- Rain or snow 1 day in 3
- Coeur d'Alene
- 48° / 31°
- Rain or snow 1 day in 2
Listings for March are still coming in. Check back closer to the date.
April 2027
1 event listed
- Boise
- 62° / 40°
- Rain or snow 1 day in 3
- Idaho Falls
- 58° / 34°
- Rain or snow 1 day in 3
- Coeur d'Alene
- 56° / 37°
- Rain or snow 1 day in 3
Listings for April are still coming in. Check back closer to the date.
May 2027
Nothing listed yet
- Boise
- 72° / 48°
- Rain or snow 1 day in 4
- Idaho Falls
- 67° / 42°
- Rain or snow 1 day in 3
- Coeur d'Alene
- 66° / 44°
- Rain or snow 1 day in 3
Listings for May are still coming in. Check back closer to the date.
June 2027
Nothing listed yet
- Boise
- 81° / 54°
- Rain or snow 1 day in 6
- Idaho Falls
- 77° / 49°
- Rain or snow 1 day in 5
- Coeur d'Alene
- 72° / 51°
- Rain or snow 1 day in 3
Listings for June are still coming in. Check back closer to the date.
July 2027
Nothing listed yet
- Boise
- 93° / 62°
- Rain or snow 1 day in 13
- Idaho Falls
- 86° / 55°
- Rain or snow 1 day in 7
- Coeur d'Alene
- 83° / 57°
- Rain or snow 1 day in 7
Listings for July are still coming in. Check back closer to the date.
August 2027
Nothing listed yet
- Boise
- 91° / 61°
- Rain or snow 1 day in 13
- Idaho Falls
- 86° / 54°
- Rain or snow 1 day in 6
- Coeur d'Alene
- 83° / 56°
- Rain or snow 1 day in 8
Listings for August are still coming in. Check back closer to the date.
September 2027
Nothing listed yet
- Boise
- 80° / 53°
- Rain or snow 1 day in 8
- Idaho Falls
- 75° / 45°
- Rain or snow 1 day in 6
- Coeur d'Alene
- 74° / 48°
- Rain or snow 1 day in 5
Listings for September are still coming in. Check back closer to the date.
Typical weather is the NOAA 1991–2020 average at the nearest weather station to each city.
