October weather forecast
Grangeville, ID

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Weather in October

October in Grangeville, Idaho is synonymous with falling leaves, cooler temperatures and shorter days. The shift in weather stands evident, with further reduced daylight hours and a significant decrease in temperature compared to September. This month signals the blending of late fall and early winter, with temperatures dipping significantly from the summer highs. While conditions become more frigid, October's weather is typically mild, making it a great time to enjoy autumn activities, such as leaf-peeping or visiting a pumpkin patch.

Temperature

As Grangeville, Idaho, transitions into October, a noticeable drop in the average high-temperature is observed, falling from a pleasant 72.7°F (22.6°C) in September to a refreshing 56.5°F (13.6°C). Grangeville observes an average low-temperature of 37.8°F (3.2°C) during October.

Humidity

In October, the average relative humidity is 66%.

Rainfall

In Grangeville, in October, it is raining for 12.6 days, with typically 1.89" (48mm) of accumulated precipitation. Throughout the year, in Grangeville, Idaho, there are 146.2 rainfall days, and 23.35" (593mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Grangeville are January through May, September through December. In Grangeville, during October, snow falls for 1.8 days and regularly aggregates up to 1.81" (46mm) of snow. In Grangeville, during the entire year, snow falls for 80.3 days and aggregates up to 60.47" (1536mm) of snow.

Daylight

The average length of the day in October in Grangeville is 10h and 54min.
On the first day of October in Grangeville, sunrise is at 6:43 am and sunset at 6:23 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:31 pm PDT.

Sunshine

The average sunshine in October in Grangeville is 7.2h.

UV index

The average daily maximum UV index in October in Grangeville is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: The average daily UV index of 3 in October transforms into the following instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

What is the usual temperature for Grangeville in October?

In Grangeville, 56.5°F (13.6°C) is the average high-temperature and 37.8°F (3.2°C) is the average low-temperature during October. In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is computed to be 82.4°F (28°C).

What is the average humidity in October in Grangeville?

In Grangeville, Idaho, the average relative humidity in October is 66%.

How many days does it rain in October in Grangeville?

In Grangeville, in October, during 12.6 rainfall days, 1.89" (48mm) of precipitation is typically accumulated.

How many days does it snow in October in Grangeville?

In October, it is snowing for 1.8 days. Throughout October, 1.81" (46mm) of snow is accumulated.

How many hours of daylight does Grangeville have in October?

The average day length in October in Grangeville, Idaho, is 10h and 54min.

When are sunrise and sunset in October in Grangeville?

In October, on the first day of the month, sunrise is at 6:43 am and sunset at 6:23 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:31 pm PDT.

How long on average sun shines in October in Grangeville?

In October, the average sunshine duration in Grangeville is 7.2h.

What is the UV index reading in October in Grangeville?

The average daily maximum UV index in October in Grangeville is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Grangeville, ID

Average temperature in October - Grangeville, ID
  • Average high temperature in October: 56.5°F

The warmest month (with the highest average high temperature) is August (82.6°F).
The month with the lowest average high temperature is December (33.6°F).

  • Average low temperature in October: 37.8°F

The month with the highest average low temperature is August (53.2°F).
The coldest month (with the lowest average low temperature) is December (21.7°F).

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Average pressure in October
Grangeville, ID

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

The month with the highest atmospheric pressure is January (30.21"Hg).
The months with the lowest atmospheric pressure are June and August (29.94"Hg).

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Average wind speed in October
Grangeville, ID

Average wind speed in October - Grangeville, ID
  • Average wind speed in October: 4.3mph

The windiest months (with the highest average wind speed) are January and November (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

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Average humidity in October
Grangeville, ID

Average humidity in October - Grangeville, ID
  • Average humidity in October: 66%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (47%).

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Average rainfall in October
Grangeville, ID

Average rainfall in October - Grangeville, ID
  • Average rainfall in October: 1.89"

The wettest month (with the highest rainfall) is April (2.91").
The driest month (with the least rainfall) is July (0.59").

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Average rainfall days in October
Grangeville, ID

Average rainfall days in October - Grangeville, ID
  • Average rainfall days in October: 12.6 days

The month with the highest number of rainy days is April (19.3 days).
The month with the least rainy days is August (6.8 days).

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Average snowfall in October
Grangeville, ID

Average snowfall in October - Grangeville, ID
  • Average snowfall in October: 1.81"

The month with the highest snowfall is February (12.95").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in October
Grangeville, ID

Average snowfall days in October - Grangeville, ID
  • Average snowfall days in October: 1.8 days

The month with the highest number of snowfall days is December (16.9 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
Grangeville, ID

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

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in October: 7h and 1min

The month with the most sunshine is August (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
Grangeville, ID

Average sunshine days in October - Grangeville, ID
  • Average sunshine days in October: 16.3 days

The month with the most sunshine days is August (22.2 days).
The month with the least sunshine days is March (7.5 days).

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Average UV index in October
Grangeville, ID

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

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).

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Average cloud cover in October
Grangeville, ID

Average cloud cover in October - Grangeville, ID
  • Average cloud cover in October: 32

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in October
Grangeville, ID

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

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

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Grangeville, Idaho, USA

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