October weather forecast
Harrison, ID

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Weather in October

October, the same as September, is another fresh autumn month in Harrison, Idaho, with an average temperature varying between 36.9°F (2.7°C) and 55°F (12.8°C).

Temperature

As October sets, the average high-temperature displays a significant decrease, moving down from a pleasant 71.1°F (21.7°C) in September to a fresh 55°F (12.8°C). During October nights, Harrison records an average temperature of 36.9°F (2.7°C).

Humidity

The average relative humidity in October is 71%.

Rainfall

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

Snowfall

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

Daylight

In Harrison, the average length of the day in October is 10h and 50min.
On the first day of October in Harrison, 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.

Sunshine

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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.
Note: In October, a regular UV index of 2 translates into these guidelines:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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Frequently asked questions

What is the temperature in October in Harrison?

The high-temperature, in October, in Harrison, is 55°F (12.8°C), while the low-temperature averages to 36.9°F (2.7°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, in August is appraised at 82.4°F (28°C).

What is the average humidity in October in Harrison?

The average relative humidity in October in Harrison, Idaho, is 71%.

How many days does it rain in October in Harrison?

In Harrison, Idaho, in October, it is raining for 13.3 days, with typically 2.2" (56mm) of accumulated precipitation.

How many days does it snow in October in Harrison?

In October, in Harrison, Idaho, it is snowing for 0.8 days. Throughout October, 0.2" (5mm) of snow is accumulated.

How many hours of daylight does Harrison have in October?

In Harrison, Idaho, the average day length in October is 10h and 50min.

When are sunrise and sunset in October in Harrison?

On the first day of October in Harrison, 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?

The average sunshine duration in October in Harrison, Idaho, is 6.1h.

What is the UV index intensity in October in Harrison?

The average daily maximum UV index in October in Harrison, Idaho, is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to 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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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Harrison, Idaho, USA

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