September weather forecast
Sandpoint, ID

Weather in September

The first month of the autumn, September, is also an agreeable month in Sandpoint, Idaho, with temperature in the range of an average low of 41.9°F (5.5°C) and an average high of 68.5°F (20.3°C).

Temperature

In September, the average high-temperature decreases from a warm 79.9°F (26.6°C) in August to an agreeable 68.5°F (20.3°C). In September, the average low-temperature is 41.9°F (5.5°C).

Humidity

In September, the average relative humidity is 62%.

Rainfall

In September, in Sandpoint, the rain falls for 9.5 days. Throughout September, 0.98" (25mm) of precipitation is accumulated. In Sandpoint, during the entire year, the rain falls for 151 days and collects up to 23.98" (609mm) of precipitation.

Snowfall

Months with snowfall in Sandpoint are January through May, September through December. September is the first month it typically snows in Sandpoint. Throughout September, in the average 0.2 snowfall days, it receives 0.59" (15mm) of snow. In Sandpoint, Idaho, during the entire year, snow falls for 80.7 days and aggregates up to 61.3" (1557mm) of snow.

Daylight

In Sandpoint, the average length of the day in September is 12h and 34min.
On the first day of September in Sandpoint, Idaho, sunrise is at 6:04 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:27 pm PDT.

Sunshine

The average sunshine in September is 9.7h.

UV index

The average daily maximum UV index in September in Sandpoint is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 3 in September interpret into the following advice:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the average humidity in September in Sandpoint?

The average relative humidity in September is 62%.

How much does it rain in Sandpoint in September?

In Sandpoint, during September, the rain falls for 9.5 days and regularly aggregates up to 0.98" (25mm) of precipitation.

When does it start to snow in Sandpoint?

September is the first month it typically snows in Sandpoint, Idaho. Throughout September, in the average 0.2 snowfall days, it receives 0.59" (15mm) of snow.

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

In Sandpoint, Idaho, the average day length in September is 12h and 34min.

What time are sunrise and sunset in September in Sandpoint?

In September, on the first day of the month, sunrise is at 6:04 am and sunset at 7:27 pm. On the last day of the month, in Sandpoint, sunrise is at 6:44 am and sunset at 6:27 pm PDT.

How many hours of sunshine does Sandpoint have in September?

In Sandpoint, Idaho, the average sunshine duration in September is 9.7h.

What is the UV index intensity in September in Sandpoint?

In Sandpoint, Idaho, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Sandpoint, ID

Average temperature in September - Sandpoint, ID
  • Average high temperature in September: 68.5°F

The warmest month (with the highest average high temperature) is August (79.9°F).
The month with the lowest average high temperature is December (28.9°F).

  • Average low temperature in September: 41.9°F

The month with the highest average low temperature is August (48.6°F).
The coldest month (with the lowest average low temperature) is December (18.5°F).

[Resources]

Average pressure in September
Sandpoint, ID

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

The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).

[Resources]

Average wind speed in September
Sandpoint, ID

Average wind speed in September - Sandpoint, ID
  • Average wind speed in September: 3.8mph

The windiest month (with the highest average wind speed) is April (4.5mph).
The calmest month (with the lowest average wind speed) is December (3.4mph).

[Resources]

Average humidity in September
Sandpoint, ID

Average humidity in September - Sandpoint, ID
  • Average humidity in September: 62%

The month with the highest relative humidity is January (95%).
The month with the lowest relative humidity is August (53%).

[Resources]

Average rainfall in September
Sandpoint, ID

Average rainfall in September - Sandpoint, ID
  • Average rainfall in September: 0.98"

The wettest month (with the highest rainfall) is January (3.35").
The driest month (with the least rainfall) is August (0.43").

[Resources]

Average rainfall days in September
Sandpoint, ID

Average rainfall days in September - Sandpoint, ID
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is March (18.8 days).
The month with the least rainy days is August (6.3 days).

[Resources]

Average snowfall in September
Sandpoint, ID

Average snowfall in September - Sandpoint, ID
  • Average snowfall in September: 0.59"

The month with the highest snowfall is January (17.28").
The months with the least snowfall are June, July and August (0").

[Resources]

Average snowfall days in September
Sandpoint, ID

Average snowfall days in September - Sandpoint, ID
  • Average snowfall days in September: 0.2 days

The month with the highest number of snowfall days is December (18.2 days).
The months with the least snowfall days are June, July and August (0 days).

[Resources]

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

Average daylight in September / Average sunshine in September - Sandpoint, ID
  • Average daylight in September: 12h and 34min

The month with the longest days is June (Average daylight: 16h and 1min).
The month with the shortest days is December (Average daylight: 8h and 25min).

  • Average sunshine in September: 9h and 42min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).

[Resources]

Average sunshine days in September
Sandpoint, ID

Average sunshine days in September - Sandpoint, ID
  • Average sunshine days in September: 18.5 days

The months with the most sunshine days are July and August (21.4 days).
The month with the least sunshine days is March (7.9 days).

[Resources]

Average UV index in September
Sandpoint, ID

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

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

[Resources]

Average cloud cover in September
Sandpoint, ID

Average cloud cover in September - Sandpoint, ID
  • Average cloud cover in September: 25

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 14).

[Resources]

Average visibility in September
Sandpoint, ID

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

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location