September weather forecast
Mineral, WA

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Weather in September

September, the first month of the autumn in Mineral, is still a pleasant month, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 68.2°F (20.1°C).

Temperature

With the commencement of September, Mineral records a moderate temperature decline, with the average high easing from August's warm 75°F (23.9°C) to an agreeable 68.2°F (20.1°C). Mineral's September nights cool down significantly from the day's heat, to an average low-temperature of 46°F (7.8°C).

Humidity

The average relative humidity in September in Mineral is 75%.

Rainfall

In Mineral, in September, it is raining for 12.3 days, with typically 1.93" (49mm) of accumulated precipitation. Throughout the year, in Mineral, there are 182.2 rainfall days, and 37.83" (961mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 32min.
On the first day of the month, sunrise is at 6:29 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:49 pm PDT.

Sunshine

In September, the average sunshine is 9.1h.

UV index

In Mineral, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 3 suggests these recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
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Frequently asked questions

What is the average September temperature in Mineral?

During September, Mineral experiences an average high-temperature of 68.2°F (20.1°C) and a low-temperature of 46°F (7.8°C).

What is the average humidity in September in Mineral?

The average relative humidity in September is 75%.

How much does it rain in Mineral in September?

In Mineral, during September, the rain falls for 12.3 days and regularly aggregates up to 1.93" (49mm) of precipitation.

When it does not snow in Mineral?

In Mineral, Washington, snow does not fall in May through October.

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

In September, the average day length is 12h and 32min.

When are sunrise and sunset in September in Mineral?

On the first day of September, sunrise is at 6:29 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:49 pm PDT.

How many hours of sunshine does Mineral have in September?

In Mineral, Washington, the average sunshine duration in September is 9.1h.

What is the UV index intensity in September in Mineral?

In September, the average daily maximum UV index in Mineral is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's 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
Mineral, WA

Average temperature in September - Mineral, WA
  • Average high temperature in September: 68.2°F

The warmest month (with the highest average high temperature) is August (75°F).
The month with the lowest average high temperature is December (41.2°F).

  • Average low temperature in September: 46°F

The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (31.1°F).

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Average pressure in September
Mineral, WA

Average pressure in September - Mineral, WA
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in September
Mineral, WA

Average wind speed in September - Mineral, WA
  • Average wind speed in September: 3.8mph

The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

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Average humidity in September
Mineral, WA

Average humidity in September - Mineral, WA
  • Average humidity in September: 75%

The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is July (70%).

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Average rainfall in September
Mineral, WA

Average rainfall in September - Mineral, WA
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is December (5.71").
The driest month (with the least rainfall) is July (0.43").

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Average rainfall days in September
Mineral, WA

Average rainfall days in September - Mineral, WA
  • Average rainfall days in September: 12.3 days

The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (6.1 days).

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Average snowfall in September
Mineral, WA

Average snowfall in September - Mineral, WA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (4.84").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Mineral, WA

Average snowfall days in September - Mineral, WA
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is February (6 days).
The months with the least snowfall days are June, July, August and October (0 days).

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Average daylight in September /
Average sunshine in September
Mineral, WA

Average daylight in September / Average sunshine in September - Mineral, WA
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).

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Average sunshine days in September
Mineral, WA

Average sunshine days in September - Mineral, WA
  • Average sunshine days in September: 16.1 days

The month with the most sunshine days is August (22.9 days).
The month with the least sunshine days is February (8 days).

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Average UV index in September
Mineral, WA

Average UV index in September - Mineral, WA
  • 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, November and December (UV index 2).

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Average cloud cover in September
Mineral, WA

Average cloud cover in September - Mineral, WA
  • Average cloud cover in September: 37

The months with the most cloud cover are January, February, March and December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in September
Mineral, WA

Average visibility in September - Mineral, WA
  • Average visibility in September: 5mi

The months with the highest visibility are April, May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, November and December (4mi).

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Mineral, Washington, USA

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