October weather forecast and climate
Boise, ID

The golden fall season in Boise, Idaho
The golden fall season in Boise, Idaho
October, like September, is another mild autumn month in Boise, Idaho, with average temperature fluctuating between 42.1°F (5.6°C) and 59°F (15°C).

Temperature

In Boise, the average high-temperature plummets, from a warm 76.1°F (24.5°C) in September, to a moderate 59°F (15°C). In October, the average low-temperature is 42.1°F (5.6°C).

Humidity

The average relative humidity in Boise is 53%.

Rainfall

In October, the rain falls for 8.7 days. Throughout October, 1.02" (26mm) of precipitation is accumulated. Throughout the year, there are 116.8 rainfall days, and 15.08" (383mm) of precipitation is accumulated.

Snowfall

In Boise snow does not fall in May through October.

Daylight

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

Sunshine

The average sunshine in October is 7.9h.

UV index

In October, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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, in October, the average high-temperature is 59°F (15°C), and the average low-temperature is 42.1°F (5.6°C).

What is the average humidity in October in Boise?

In Boise, the average relative humidity in October is 53%.

How many days does it rain in October in Boise?

In Boise, Idaho, during October, the rain falls for 8.7 days and regularly aggregates up to 1.02" (26mm) of precipitation.

Does it snow in Boise in October?

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

When it does not snow in Boise?

May through October are months without snowfall in Boise, Idaho.

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

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

How long on average sun shines in October in Boise?

The average sunshine in October in Boise is 7.9h.

What is the UV index reading in October in Boise?

In October, the average daily maximum UV index in Boise is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.
Average temperature in October - Boise, ID
  • Average high temperature in October: 15°C

The warmest month (with the highest average high temperature) is July (31°C).
The month with the lowest average high temperature is December (1.5°C).

  • Average low temperature in October: 5.6°C

The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is December (-4.9°C).

Average pressure in October - Boise, ID
  • Average pressure in October: 1017.3mbar

The month with the highest atmospheric pressure is January (1024.4mbar).
The month with the lowest atmospheric pressure is June (1012.6mbar).

Average wind speed in October - Boise, ID
  • Average wind speed in October: 8.9km/h

The windiest month (with the highest average wind speed) is April (11.4km/h).
The calmest month (with the lowest average wind speed) is January (8.4km/h).

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%).

Average rainfall in October - Boise, ID
  • Average rainfall in October: 26mm

The wettest month (with the highest rainfall) is March (56mm).
The driest month (with the least rainfall) is July (5mm).

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).

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

The month with the highest snowfall is December (169mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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).
Months with the least snowfall days are 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 the shortest days is December (Average daylight: 9h).

  • Average sunshine in October: 7.9h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.5h).

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).

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).
Months with the lowest UV index are January, February, November and December (UV index 2).

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).

Average visibility in October - Boise, ID
  • Average visibility in October: 10km

Months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The month with the lowest visibility is January (8km).