September weather forecast
Ponderay, ID

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Weather in September

September, the first month of the autumn in Ponderay, is still a pleasant month, with an average temperature fluctuating between 41.9°F (5.5°C) and 68.5°F (20.3°C).

Temperature

September weather is marked by a drop in the average high-temperature, falling from a moderately hot 79.9°F (26.6°C) in August to a pleasant 68.5°F (20.3°C). Ponderay's nights during September are marked by a pronounced drop from daytime temperatures, experiencing an average low of 41.9°F (5.5°C).

Humidity

In Ponderay, Idaho, the average relative humidity in September is 62%.

Rainfall

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

Snowfall

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

Daylight

In September, the average length of the day is 12h and 34min.
On the first day of the month, sunrise is at 6:04 am and sunset at 7:26 pm. On the last day of September, sunrise is at 6:45 am and sunset at 6:26 pm PDT.

Sunshine

In September, the average sunshine in Ponderay is 9.7h.

UV index

In September, the average daily maximum UV index in Ponderay is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 3 during September translates into the following directions:
Undertake protective steps - Preventing sun damage is advised. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Frequently asked questions

What is the temperature in September in Ponderay?

An average high-temperature, in September, in Ponderay, is 68.5°F (20.3°C) and the average low-temperature is 41.9°F (5.5°C).

What is the average humidity in September in Ponderay?

In September, the average relative humidity in Ponderay is 62%.

How much does it rain in Ponderay in September?

In Ponderay, Idaho, in September, during 9.5 rainfall days, 0.98" (25mm) of precipitation is typically accumulated.

When does it start to snow in Ponderay?

September is the first month it typically snows in Ponderay. 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 Ponderay?

The average day length in September in Ponderay, Idaho, is 12h and 34min.

What time are sunrise and sunset in September in Ponderay?

On the first day of September in Ponderay, sunrise is at 6:04 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:26 pm PDT.

How long on average sun shines in September in Ponderay?

The average sunshine duration in September in Ponderay, Idaho, is 9.7h.

How high is the UV index in September in Ponderay?

In Ponderay, Idaho, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
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
Ponderay, ID

Average temperature in September - Ponderay, 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).

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Average pressure in September
Ponderay, ID

Average pressure in September - Ponderay, 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).

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Average wind speed in September
Ponderay, ID

Average wind speed in September - Ponderay, 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).

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Average humidity in September
Ponderay, ID

Average humidity in September - Ponderay, 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%).

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Average rainfall in September
Ponderay, ID

Average rainfall in September - Ponderay, 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").

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Average rainfall days in September
Ponderay, ID

Average rainfall days in September - Ponderay, 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).

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Average snowfall in September
Ponderay, ID

Average snowfall in September - Ponderay, 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").

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Average snowfall days in September
Ponderay, ID

Average snowfall days in September - Ponderay, 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).

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

Average daylight in September / Average sunshine in September - Ponderay, ID
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in September: 9h and 4min

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).

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Average sunshine days in September
Ponderay, ID

Average sunshine days in September - Ponderay, 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).

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Average UV index in September
Ponderay, ID

Average UV index in September - Ponderay, 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).

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Average cloud cover in September
Ponderay, ID

Average cloud cover in September - Ponderay, 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).

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Average visibility in September
Ponderay, ID

Average visibility in September - Ponderay, 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).

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Ponderay, Idaho, USA

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