October weather forecast
Shelley, ID

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Weather in October

As October stride in, slushy autumn manifests itself in Shelley, Idaho. The weather turns markedly cooler, with temperatures dropping down noticeably from September's highs. An increase in rainfall adds to the atmosphere of a typical cool, wet autumn. This combined with a reduction in the hours of daylight and sunshine sets an appropriate mood for Halloween festivities. October's crisp and refreshing weather paints an impressive spectrum of fall foliage around the city.

Temperature

The beginning of October in Shelley marks a clear shift in the average high-temperature, receding from September's agreeable 72.9°F (22.7°C) to a refreshing 55.4°F (13°C). October brings an average low-temperature of 37.2°F (2.9°C) to Shelley.

Humidity

In October, the average relative humidity in Shelley is 57%.

Rainfall

In Shelley, in October, it is raining for 10 days, with typically 0.91" (23mm) of accumulated precipitation. In Shelley, during the entire year, the rain falls for 124.6 days and collects up to 12.24" (311mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. In Shelley, during October, snow falls for 1.5 days and regularly aggregates up to 0.55" (14mm) of snow. Throughout the year, in Shelley, there are 75.1 snowfall days, and 30.59" (777mm) of snow is accumulated.

Daylight

The average length of the day in October in Shelley is 11h and 1min.
On the first day of the month, sunrise is at 7:26 am and sunset at 7:08 pm. On the last day of October, sunrise is at 8:03 am and sunset at 6:20 pm MDT.

Sunshine

In October, the average sunshine in Shelley is 7.4h.

UV index

In Shelley, Idaho, the average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 3 in October translates into this advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Enhance your sun protection with tightly woven, yet airy clothing. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
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Frequently asked questions

What is the temperature in October in Shelley?

In October, in Shelley, the average high-temperature is 55.4°F (13°C), and the average low-temperature is 37.2°F (2.9°C).

What is the average humidity in October in Shelley?

In Shelley, the average relative humidity in October is 57%.

How much does it rain in Shelley in October?

In October, in Shelley, Idaho, the rain falls for 10 days. Throughout October, 0.91" (23mm) of precipitation is accumulated.

How many days does it snow in October in Shelley?

In Shelley, in October, during 1.5 snowfall days, 0.55" (14mm) of snow is typically accumulated.

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

The average day length in October in Shelley, Idaho, is 11h and 1min.

When is the sunrise / sunset in October in Shelley?

In October, on the first day of the month, sunrise is at 7:26 am and sunset at 7:08 pm. On the last day of the month, in Shelley, sunrise is at 8:03 am and sunset at 6:20 pm MDT.

How long on average sun shines in October in Shelley?

The average sunshine duration in October is 7.4h.

How high is the UV index in October in Shelley?

In October, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
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
Shelley, ID

Average temperature in October - Shelley, ID
  • Average high temperature in October: 55.4°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is December (27.9°F).

  • Average low temperature in October: 37.2°F

The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).

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Average pressure in October
Shelley, ID

Average pressure in October - Shelley, ID
  • Average pressure in October: 30.06"Hg

The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in October
Shelley, ID

Average wind speed in October - Shelley, ID
  • Average wind speed in October: 7.5mph

The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest month (with the lowest average wind speed) is January (6mph).

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Average humidity in October
Shelley, ID

Average humidity in October - Shelley, ID
  • Average humidity in October: 57%

The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are July and August (36%).

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Average rainfall in October
Shelley, ID

Average rainfall in October - Shelley, ID
  • Average rainfall in October: 0.91"

The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is July (0.51").

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Average rainfall days in October
Shelley, ID

Average rainfall days in October - Shelley, ID
  • Average rainfall days in October: 10 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.1 days).

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Average snowfall in October
Shelley, ID

Average snowfall in October - Shelley, ID
  • Average snowfall in October: 0.55"

The month with the highest snowfall is January (7.44").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in October
Shelley, ID

Average snowfall days in October - Shelley, ID
  • Average snowfall days in October: 1.5 days

The month with the highest number of snowfall days is December (16.7 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
Shelley, ID

Average daylight in October / Average sunshine in October - Shelley, 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 2min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).

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Average sunshine days in October
Shelley, ID

Average sunshine days in October - Shelley, ID
  • Average sunshine days in October: 18.9 days

The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is March (10 days).

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Average UV index in October
Shelley, ID

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

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

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Average cloud cover in October
Shelley, ID

Average cloud cover in October - Shelley, ID
  • Average cloud cover in October: 22

The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 11).

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Average visibility in October
Shelley, ID

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

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

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Shelley, Idaho, USA

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