October weather forecast
Boise, ID

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The golden fall season in Boise, Idaho
The golden fall season in Boise, Idaho

Weather in October

October brings distinct autumn vibes to Boise, Idaho. Temperatures continue to drop steadily, creating an invigorating atmosphere in the city as tree leaves take on beautiful fall colors. Cloud cover and humidity continue to increase while daylight hours become noticeably shorter. Cooler weather also means the return of rains, with precipitation levels rising somewhat. Boise experiences a dip in temperatures in October with highs hovering around 59°F (15°C).

Temperature

October's arrival is marked by a notable drop in high-temperatures, falling from a warm 76.1°F (24.5°C) in September to a refreshing 59°F (15°C). Boise, during October, witnesses an average low-temperature of 42.1°F (5.6°C).

Humidity

The average relative humidity in October in Boise is 53%.

Rainfall

In Boise, during October, the rain falls for 8.7 days and regularly aggregates up to 1.02" (26mm) of precipitation. In Boise, during the entire year, the rain falls for 116.8 days and collects up to 15.08" (383mm) of precipitation.

Snowfall

In Boise, Idaho, snow does not fall in May through October.

Daylight

In Boise, the average length of the day in October is 11h and 0min.
On the first day of the month, sunrise is at 7:43 am and sunset at 7:25 pm. On the last day of October, sunrise is at 8:20 am and sunset at 6:36 pm MDT.

Sunshine

The average sunshine in October in Boise is 7.9h.

UV index

In Boise, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index of 3 during October translates into these guidelines:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. When the Sun is at its strongest around midday, find shade and limit exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What are October temperatures in Boise?

Boise in October has an average high-temperature of 59°F (15°C) and an average low-temperature of 42.1°F (5.6°C).

What is the average humidity in October in Boise?

The average relative humidity in October in Boise, Idaho, is 53%.

How much does it rain in Boise in October?

In Boise, in October, it is raining for 8.7 days, with typically 1.02" (26mm) of accumulated precipitation.

When it does not snow in Boise?

In Boise, snow does not fall in May through October.

Does it snow in Boise in October?

In Boise, Idaho, in October, it doesn't snow. In November, it regularly snows.

What is the average length of the day in October in Boise?

The average day length in October is 11h and 0min.

When is the sunrise / sunset in October in Boise?

In October, on the first day of the month, sunrise is at 7:43 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 8:20 am and sunset at 6:36 pm MDT.

How many hours of sunshine does Boise have in October?

In October, the average sunshine duration in Boise is 7.9h.

How high is the UV index in October in Boise?

In October, the average daily maximum UV index in Boise, Idaho, is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Boise, ID

Average temperature in October - Boise, ID
  • Average high temperature in October: 59°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is December (34.7°F).

  • Average low temperature in October: 42.1°F

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (23.2°F).

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Average pressure in October
Boise, ID

Average pressure in October - Boise, ID
  • Average pressure in October: 30.04"Hg

The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in October
Boise, ID

Average wind speed in October - Boise, ID
  • Average wind speed in October: 5.5mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is January (5.2mph).

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Average humidity in October
Boise, ID

Average humidity in October - Boise, ID
  • Average humidity in October: 53%

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is July (30%).

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Average rainfall in October
Boise, ID

Average rainfall in October - Boise, ID
  • Average rainfall in October: 1.02"

The wettest month (with the highest rainfall) is March (2.2").
The driest month (with the least rainfall) is July (0.2").

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Average rainfall days in October
Boise, ID

Average rainfall days in October - Boise, ID
  • Average rainfall days in October: 8.7 days

The month with the highest number of rainy days is March (16.2 days).
The month with the least rainy days is July (4.5 days).

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Average snowfall in October
Boise, ID

Average snowfall in October - Boise, ID
  • Average snowfall in October: 0"

The month with the highest snowfall is December (6.65").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in October
Boise, ID

Average snowfall days in October - Boise, ID
  • Average snowfall days in October: 0.2 days

The month with the highest number of snowfall days is December (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in October /
Average sunshine in October
Boise, ID

Average daylight in October / Average sunshine in October - Boise, ID
  • Average daylight in October: 11h and 0min

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 October: 7h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in October
Boise, ID

Average sunshine days in October - Boise, ID
  • Average sunshine days in October: 20.1 days

The month with the most sunshine days is July (23.6 days).
The month with the least sunshine days is March (12.1 days).

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Average UV index in October
Boise, ID

Average UV index in October - Boise, ID
  • Average UV index in October: 3

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in October
Boise, ID

Average cloud cover in October - Boise, ID
  • Average cloud cover in October: 23

The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 8).

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Average visibility in October
Boise, ID

Average visibility in October - Boise, ID
  • Average visibility in October: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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Boise, Idaho, USA

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