Boise
Idaho, USA
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
Boise, ID

The golden fall season in Boise, Idaho, with the tall city buildings
The golden fall season in Boise, Idaho, with the tall city buildings
October, the same as September, is another enjoyable autumn month in Boise, Idaho, with temperature in the range of an average low of 40.8°F (4.9°C) and an average high of 64.8°F (18.2°C).

Temperature

In October, the average high-temperature decreases, from a moderately hot 78.8°F (26°C) in September, to an enjoyable 64.8°F (18.2°C). In October, the average low-temperature is 40.8°F (4.9°C).

Humidity

The average relative humidity in Boise is 53.6%.

Rainfall

In Boise, Idaho, during October, the rain falls for 5.5 days and regularly aggregates up to 0.8" (19.1mm) of precipitation. In Boise, during the entire year, the rain falls for 87.6 days and collects up to 11.7" (297.9mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.1" (2.5mm) of snow. In Boise, during the entire year, snow falls for 19.4 days, and aggregates up to 19.2" (487.5mm) of snow.

Daylight

In October, the average length of the day in Boise is 11h.

Sunshine

In October, the average sunshine is 7.7h.

UV index

In October, the average daily maximum UV index in Boise, Idaho, is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in October in Boise?

In Boise, Idaho, in October, the average high-temperature is 64.8°F (18.2°C), and the average low-temperature is 40.8°F (4.9°C).

What is the average humidity in October in Boise?

The average relative humidity in October in Boise is 53.6%.

How many days does it rain in October in Boise?

In October, in Boise, the rain falls for 5.5 days. Throughout October, 0.8" (19.1mm) of precipitation is accumulated.

When does it start snowing in Boise?

October is the first month it typically snows in Boise. Throughout October, in the average 0.1 snowfall days, it receives 0.1" (2.5mm) of snow.

How many hours of daylight does Boise have in October?

The average length of the day in October is 11h.

How many hours of sunshine does Boise have in October?

The average sunshine in October in Boise, Idaho, is 7.7h.

How high is the UV index in October in Boise?

In Boise, Idaho, the average daily maximum UV index in October is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.
Average temperature in October - Boise, ID
  • Average high temperature in October: 64.8°F

The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is December (37.5°F).

  • Average low temperature in October: 40.9°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is December (24°F).

Average humidity in October - Boise, ID
  • Average humidity in October: 53.6%

The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is July (36.1%).

Average rainfall in October - Boise, ID
  • Average rainfall in October: 0.8"

The wettest month (with the highest rainfall) is December (1.6").
The driest month (with the lowest rainfall) is August (0.2").

Average rainfall days in October - Boise, ID
  • Average rainfall days in October: 5.5 days

The month with the highest number of rainy days is December (11.8 days).
The month with the lowest number of rainy days is August (2.4 days).

Average snowfall in October - Boise, ID
  • Average snowfall in October: 0.1"

The month with the highest snowfall is December (7").
Months with the lowest snowfall are May, June, July, August and September (0").

Average snowfall days in October - Boise, ID
  • Average snowfall days in October: 0.1 days

The month with the highest number of snowfall days is December (6 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

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

The month with the longest days is June (Average daylight: 15.4h).
The month with shortest days is December (Average daylight: 9h).

  • Average sunshine in October: 7.7h

The month with most sunshine is July (Average sunshine: 12.9h).
The month with least sunshine is December (Average sunshine: 3.4h).

Average UV index in October - Boise, ID
  • Average UV index in October: 4

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January and December (UV index 1).