September weather forecast
Kooskia, ID

Weather in September

The first month of the autumn, September, is still a warm month in Kooskia, Idaho, with temperature in the range of an average high of 73.4°F (23°C) and an average low of 47.3°F (8.5°C).

Temperature

In September, the average high-temperature decreases from a moderately hot 82.6°F (28.1°C) in August to a still warm 73.4°F (23°C). In September, in Kooskia, Idaho, the average low-temperature is 47.3°F (8.5°C).

Humidity

In Kooskia, the average relative humidity in September is 54%.

Rainfall

In September, in Kooskia, Idaho, the rain falls for 7.8 days. Throughout September, 0.87" (22mm) of precipitation is accumulated. In Kooskia, during the entire year, the rain falls for 156.5 days and collects up to 21.38" (543mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in September in Kooskia is 12h and 31min.
On the first day of the month, sunrise is at 6:04 am and sunset at 7:22 pm. On the last day of September, sunrise is at 6:41 am and sunset at 6:26 pm PDT.

Sunshine

The average sunshine in September in Kooskia, Idaho, is 10h.

UV index

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the average humidity in September in Kooskia?

In Kooskia, Idaho, the average relative humidity in September is 54%.

How many days does it rain in September in Kooskia?

In Kooskia, Idaho, in September, it is raining for 7.8 days, with typically 0.87" (22mm) of accumulated precipitation.

When it does not snow in Kooskia?

May through September are months without snowfall.

Does it snow in Kooskia in September?

In Kooskia, Idaho, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Kooskia?

The average day length in September in Kooskia is 12h and 31min.

When are sunrise and sunset in September in Kooskia?

On the first day of September in Kooskia, Idaho, sunrise is at 6:04 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:26 pm PDT.

How long on average sun shines in September in Kooskia?

In Kooskia, Idaho, the average sunshine duration in September is 10h.

What is the UV index intensity in September in Kooskia?

In September, the average daily maximum UV index in Kooskia, Idaho, is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Kooskia, ID

Average temperature in September - Kooskia, ID
  • Average high temperature in September: 73.4°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 (34°F).

  • Average low temperature in September: 47.3°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 (22.3°F).

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Average pressure in September
Kooskia, ID

Average pressure in September - Kooskia, ID
  • Average pressure in September: 29.98"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 September
Kooskia, ID

Average wind speed in September - Kooskia, ID
  • Average wind speed in September: 3.7mph

The windiest month (with the highest average wind speed) is March (4.4mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

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Average humidity in September
Kooskia, ID

Average humidity in September - Kooskia, ID
  • Average humidity in September: 54%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (48%).

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Average rainfall in September
Kooskia, ID

Average rainfall in September - Kooskia, ID
  • Average rainfall in September: 0.87"

The wettest month (with the highest rainfall) is March (2.56").
The driest month (with the least rainfall) is July (0.43").

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Average rainfall days in September
Kooskia, ID

Average rainfall days in September - Kooskia, ID
  • Average rainfall days in September: 7.8 days

The month with the highest number of rainy days is March (19.6 days).
The month with the least rainy days is August (5.4 days).

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Average snowfall in September
Kooskia, ID

Average snowfall in September - Kooskia, ID
  • Average snowfall in September: 0"

The month with the highest snowfall is February (3.86").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Kooskia, ID

Average snowfall days in September - Kooskia, ID
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (8.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Kooskia, ID

Average daylight in September / Average sunshine in September - Kooskia, ID
  • Average daylight in September: 12h and 31min

The month with the longest days is June (Average daylight: 15h and 43min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in September: 10h and 0min

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 54min).

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Average sunshine days in September
Kooskia, ID

Average sunshine days in September - Kooskia, ID
  • Average sunshine days in September: 20.3 days

The month with the most sunshine days is July (23.2 days).
The month with the least sunshine days is April (9.1 days).

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Average UV index in September
Kooskia, ID

Average UV index in September - Kooskia, ID
  • Average UV index in September: 4

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 September
Kooskia, ID

Average cloud cover in September - Kooskia, ID
  • Average cloud cover in September: 20

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 12).

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Average visibility in September
Kooskia, ID

Average visibility in September - Kooskia, ID
  • Average visibility in September: 6mi

The months with the highest visibility are 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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