September weather forecast
McCall, ID

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The hilly landscape full of scenic pine trees as well as the bright cloudy sky above in a great mirror image in the Goose Lake in McCall, Idaho
The hilly landscape full of scenic pine trees as well as the bright cloudy sky above in a great mirror image in the Goose Lake in McCall, Idaho

Weather in September

September brings the onset of autumn to McCall. It's a beautiful month as the town starts to display a spectrum of fall colors. Temperatures begin to fall from their August highs, bringing much-needed relief from the city's sweltering summer heat. Inhabitants relish the cooler evenings and the gradual decline in daylight hours. As the city transitions from summer, autumnal activities replace the summer adventures that once filled the schedule.

Temperature

The move into September indicates a reduction in the average high-temperature, down from August's warm 76.6°F (24.8°C) to a comfortable 67.1°F (19.5°C). McCall's September nights cool down significantly from the day's heat, to an average low-temperature of 41.9°F (5.5°C).

Humidity

The average relative humidity in September is 53%.

Rainfall

In September, the rain falls for 8.9 days. Throughout September, 1.02" (26mm) of precipitation is accumulated. In McCall, Idaho, during the entire year, the rain falls for 116.3 days and collects up to 27.24" (692mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.8 snowfall days, it receives 0.51" (13mm) of snow. Throughout the year, in McCall, there are 119.5 snowfall days, and 130.79" (3322mm) of snow is accumulated.

Daylight

In September, the average length of the day in McCall is 12h and 30min.
On the first day of September, sunrise is at 7:07 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 7:26 pm MDT.

Sunshine

In McCall, the average sunshine in September is 9.2h.

UV index

In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 3 in September interprets into the following advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the average September temperature in McCall?

In McCall, 67.1°F (19.5°C) is the average high-temperature and 41.9°F (5.5°C) is the average low-temperature during September.

What is the average humidity in September in McCall?

In McCall, Idaho, the average relative humidity in September is 53%.

How much does it rain in McCall in September?

In McCall, Idaho, during September, the rain falls for 8.9 days and regularly aggregates up to 1.02" (26mm) of precipitation.

When does it start snowing in McCall?

September is the first month it typically snows in McCall, Idaho. Throughout September, in the average 0.8 snowfall days, it receives 0.51" (13mm) of snow.

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

In September, the average day length in McCall, Idaho, is 12h and 30min.

When is the sunrise / sunset in September in McCall?

On the first day of September in McCall, Idaho, sunrise is at 7:07 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 7:26 pm MDT.

How long on average sun shines in September in McCall?

In McCall, Idaho, the average sunshine duration in September is 9.2h.

What is the UV index reading in September in McCall?

In McCall, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe 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 September
McCall, ID

Average temperature in September - McCall, ID
  • Average high temperature in September: 67.1°F

The warmest months (with the highest average high temperature) are July and August (76.6°F).
The month with the lowest average high temperature is December (26.4°F).

  • Average low temperature in September: 41.9°F

The month with the highest average low temperature is August (48.2°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).

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Average pressure in September
McCall, ID

Average pressure in September - McCall, ID
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in September
McCall, ID

Average wind speed in September - McCall, ID
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is March (5.6mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).

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Average humidity in September
McCall, ID

Average humidity in September - McCall, ID
  • Average humidity in September: 53%

The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is August (45%).

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Average rainfall in September
McCall, ID

Average rainfall in September - McCall, ID
  • Average rainfall in September: 1.02"

The wettest month (with the highest rainfall) is March (3.62").
The driest month (with the least rainfall) is July (0.51").

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Average rainfall days in September
McCall, ID

Average rainfall days in September - McCall, ID
  • Average rainfall days in September: 8.9 days

The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (3.6 days).

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Average snowfall in September
McCall, ID

Average snowfall in September - McCall, ID
  • Average snowfall in September: 0.51"

The month with the highest snowfall is January (26.89").
The months with the least snowfall are July and August (0").

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Average snowfall days in September
McCall, ID

Average snowfall days in September - McCall, ID
  • Average snowfall days in September: 0.8 days

The month with the highest number of snowfall days is March (20.6 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in September / Average sunshine in September - McCall, ID
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 4h and 0min).

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Average sunshine days in September
McCall, ID

Average sunshine days in September - McCall, ID
  • Average sunshine days in September: 18.1 days

The month with the most sunshine days is July (21.2 days).
The month with the least sunshine days is March (6.8 days).

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Average UV index in September
McCall, ID

Average UV index in September - McCall, ID
  • Average UV index in September: 3

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).

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Average cloud cover in September
McCall, ID

Average cloud cover in September - McCall, ID
  • Average cloud cover in September: 19

The month with the most cloud cover is February (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 11).

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Average visibility in September
McCall, ID

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

The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).

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McCall, Idaho, USA

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