October weather forecast
Harrison, ID

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Weather in October

October, like September, in Harrison, Idaho, is a cool autumn month, with an average temperature ranging between max 55°F (12.8°C) and min 36.9°F (2.7°C).

Temperature

October is characterized by a clear drop in the average high-temperature, falling from September's pleasant 71.1°F (21.7°C) to a cool 55°F (12.8°C). Harrison, during October, witnesses an average low-temperature of 36.9°F (2.7°C).

Humidity

In October, the average relative humidity is 71%.

Rainfall

In Harrison, in October, it is raining for 13.3 days, with typically 2.2" (56mm) of accumulated precipitation. Throughout the year, there are 148.8 rainfall days, and 23.86" (606mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. In Harrison, in October, snow falls for 0.8 days, with typically accumulated 0.2" (5mm) of snow. In Harrison, during the entire year, snow falls for 67.9 days and aggregates up to 53.5" (1359mm) of snow.

Daylight

In October, the average length of the day is 10h and 50min.
On the first day of the month, sunrise is at 6:47 am and sunset at 6:25 pm. On the last day of October, sunrise is at 7:30 am and sunset at 5:30 pm PDT.

Sunshine

In Harrison, Idaho, the average sunshine in October is 6.1h.

UV index

In Harrison, the average daily maximum UV index in October is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: An average maximum UV index of 2 in October leads to these recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.

Frequently asked questions

What are the temperatures in October?

The average high-temperature, in October, in Harrison, is 55°F (12.8°C), while the average low-temperature is 36.9°F (2.7°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is calculated to be 82.4°F (28°C).

What is the average humidity in October?

In October, the average relative humidity is 71%.

How much does it rain in October?

In Harrison, during October, the rain falls for 13.3 days and regularly aggregates up to 2.2" (56mm) of precipitation.

How much does it snow in October?

In Harrison, in October, snow falls for 0.8 days, with typically accumulated 0.2" (5mm) of snow.

What is the average length of the day in October?

The average day length in October is 10h and 50min.

When are sunrise and sunset in October?

On the first day of October, sunrise is at 6:47 am and sunset at 6:25 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:30 pm PDT.

How many hours of sunshine does Harrison have in October?

In Harrison, the average sunshine duration in October is 6.1h.

What is the UV index intensity in October?

In October, the average daily maximum UV index in Harrison is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
Average max. wind speed
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Harrison, ID

Average temperature in October - Harrison, ID
  • Average high temperature in October: 55°F

The warmest month (with the highest average high temperature) is August (81.5°F).
The month with the lowest average high temperature is December (32.2°F).

  • Average low temperature in October: 36.9°F

The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is December (22.1°F).

Average pressure in October
Harrison, ID

Average pressure in October - Harrison, ID
  • Average pressure in October: 30.05"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

Average wind speed in October
Harrison, ID

Average wind speed in October - Harrison, ID
  • Average wind speed in October: 4.5mph

The windiest month (with the highest average wind speed) is April (5.4mph).
The calmest months (with the lowest average wind speed) are August, September and December (4.3mph).

Average humidity in October
Harrison, ID

Average humidity in October - Harrison, ID
  • Average humidity in October: 71%

The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is August (47%).

Average rainfall in October
Harrison, ID

Average rainfall in October - Harrison, ID
  • Average rainfall in October: 2.2"

The wettest month (with the highest rainfall) is January (3.39").
The driest month (with the least rainfall) is July (0.43").

Average rainfall days in October
Harrison, ID

Average rainfall days in October - Harrison, ID
  • Average rainfall days in October: 13.3 days

The month with the highest number of rainy days is March (18.6 days).
The month with the least rainy days is August (5.6 days).

Average snowfall in October
Harrison, ID

Average snowfall in October - Harrison, ID
  • Average snowfall in October: 0.2"

The month with the highest snowfall is January (15.2").
The months with the least snowfall are June, July and August (0").

Average snowfall days in October
Harrison, ID

Average snowfall days in October - Harrison, ID
  • Average snowfall days in October: 0.8 days

The month with the highest number of snowfall days is December (16.6 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in October / Average sunshine in October - Harrison, ID
  • Average daylight in October: 10h and 5min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in October: 6h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).

Average sunshine days in October
Harrison, ID

Average sunshine days in October - Harrison, ID
  • Average sunshine days in October: 15.5 days

The month with the most sunshine days is July (22.8 days).
The month with the least sunshine days is February (7.6 days).

Average UV index in October
Harrison, ID

Average UV index in October - Harrison, ID
  • Average UV index in October: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in October
Harrison, ID

Average cloud cover in October - Harrison, ID
  • Average cloud cover in October: 39

The months with the most cloud cover are January and December (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in October
Harrison, ID

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

The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).

Harrison, Idaho, USA

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