Boise Weather in October
Boise in October sees pleasant daytime temperatures of 19°C (66°F) and nighttime lows of 4°C (39°F). Low rainfall is typical, with around 28 mm (1.1 in) for the month.
Rainfall in Boise in October
Historically, October sees about 8 days of rain, with a monthly average of 28 mm (1.1 in). Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Boise in October
The perfect temperature in Boise in October makes it a solid month to visit, with 19°C (66°F) during the day and 4°C (39°F) at night. Conditions are often most pleasant around the middle of the day. With overnight lows of 4°C (39°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Boise in October
The city usually sees around 238 hours of sunlight, indicating many sunny days — a great month for sightseeing.If you're inclined towards comfortable temperatures and drier conditions, October is a good time to visit Boise.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Boise's climate page.
Boise Temperature in October
Min Temperature
4°C (39°F)
Max Temperature
19°C (66°F)
Chance of Rain
27%
Precipitation
28 mm (1.1 in)
Rainy days
8 days
Humidity
53%
Sunshine
238 hours
Percentage Sunshine
70%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Boise typically drop from around 21°C (70°F) at the start of October to approximately 14°C (57°F) by the end. Nights are cold, with lows typically ranging from 2°C (36°F) to 9°C (48°F).
Average temperatures in October
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in October
Historical weather for Boise in October
Browse day-by-day weather records for Boise spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Boise historical weather extremes in October
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Boise.
- On October 1, 1992, temperatures climbed to 34°C (93°F), marking the warmest October day on record.
- Boise registered its coldest October night on October 30, 2019, with temperatures dropping to -8°C (18°F).
Best Places in the United States of America in October
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in October →
perfect weather
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What to Wear in Boise in October
Comfortable temperatures call for an easy wardrobe in October. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Light rain is possible, so consider bringing a small umbrella or rain jacket. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Boise in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Boise's climate page.
Temperature Rainfall Sunshine Humidity
See the full Boise climate overview or explore weather in the United States of America.
