September weather forecast
Lapwai, ID

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Weather in September

The first month of the autumn, September, is still a warm month in Lapwai, Idaho, with an average temperature ranging between max 75°F (23.9°C) and min 52.7°F (11.5°C).

Temperature

The shift from August to September corresponds with a decrease in the average high-temperature, down to a still warm 75°F (23.9°C) from a moderately hot 85.3°F (29.6°C). The nighttime average for Lapwai in September plummets considerably from its daytime counterpart, resting at a fresh 52.7°F (11.5°C).

Humidity

The average relative humidity in September in Lapwai, Idaho, is 45%.

Rainfall

In Lapwai, in September, it is raining for 6.7 days, with typically 0.39" (10mm) of accumulated precipitation. In Lapwai, during the entire year, the rain falls for 142.4 days and collects up to 14.21" (361mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In September, the average length of the day in Lapwai is 12h and 32min.
On the first day of September, sunrise is at 6:08 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:28 pm PDT.

Sunshine

The average sunshine in September in Lapwai is 10.4h.

UV index

In September, the average daily maximum UV index in Lapwai is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 4 in September transforms into the following instructions:
Ensure safety - Imperative it is to shield skin and eyes from damage. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What is the temperature in September in Lapwai?

In September, the average high-temperature and low-temperature in Lapwai, Idaho, are 75°F (23.9°C) and 52.7°F (11.5°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in July is evaluated at 84.2°F (29°C).

What is the average humidity in September in Lapwai?

In Lapwai, the average relative humidity in September is 45%.

How many days does it rain in September in Lapwai?

In Lapwai, in September, it is raining for 6.7 days, with typically 0.39" (10mm) of accumulated precipitation.

When it does not snow in Lapwai?

May through September are months without snowfall in Lapwai.

Does it snow in Lapwai in September?

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

How many hours of daylight does Lapwai have in September?

The average day length in September in Lapwai, Idaho, is 12h and 32min.

When are sunrise and sunset in September in Lapwai?

On the first day of September in Lapwai, Idaho, sunrise is at 6:08 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:28 pm PDT.

How many hours of sunshine does Lapwai have in September?

The average sunshine duration in September in Lapwai is 10.4h.

What is the UV index reading in September in Lapwai?

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Lapwai, ID

Average temperature in September - Lapwai, ID
  • Average high temperature in September: 75°F

The warmest month (with the highest average high temperature) is August (85.3°F).
The month with the lowest average high temperature is December (36.1°F).

  • Average low temperature in September: 52.7°F

The month with the highest average low temperature is August (59.2°F).
The coldest month (with the lowest average low temperature) is December (24.4°F).

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Average pressure in September
Lapwai, ID

Average pressure in September - Lapwai, ID
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

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Average wind speed in September
Lapwai, ID

Average wind speed in September - Lapwai, ID
  • Average wind speed in September: 4.3mph

The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.3mph).

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Average humidity in September
Lapwai, ID

Average humidity in September - Lapwai, ID
  • Average humidity in September: 45%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (38%).

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Average rainfall in September
Lapwai, ID

Average rainfall in September - Lapwai, ID
  • Average rainfall in September: 0.39"

The wettest month (with the highest rainfall) is March (1.85").
The driest month (with the least rainfall) is August (0.31").

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Average rainfall days in September
Lapwai, ID

Average rainfall days in September - Lapwai, ID
  • Average rainfall days in September: 6.7 days

The month with the highest number of rainy days is March (17.6 days).
The month with the least rainy days is August (5.2 days).

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Average snowfall in September
Lapwai, ID

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

The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Lapwai, ID

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

The month with the highest number of snowfall days is December (8.1 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
Lapwai, ID

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

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 September: 10h and 2min

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

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Average sunshine days in September
Lapwai, ID

Average sunshine days in September - Lapwai, ID
  • Average sunshine days in September: 21.9 days

The month with the most sunshine days is July (24 days).
The months with the least sunshine days are February and March (10.8 days).

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Average UV index in September
Lapwai, ID

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

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is February (UV index 1).

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Average cloud cover in September
Lapwai, ID

Average cloud cover in September - Lapwai, ID
  • Average cloud cover in September: 18

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 12).

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Average visibility in September
Lapwai, ID

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

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).

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Lapwai, Idaho, USA

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