September weather forecast
Thorp, WA

Weather in September

September, the first month of the autumn, in Thorp, is still a pleasant month, with average temperature fluctuating between 49.1°F (9.5°C) and 71.1°F (21.7°C).

Temperature

In Thorp, the average high-temperature in September decreases, from a moderately hot 82°F (27.8°C) in August, to a pleasant 71.1°F (21.7°C). In Thorp, in September, the average low-temperature is 49.1°F (9.5°C).

Humidity

In Thorp, the average relative humidity is 54%.

Rainfall

In Thorp, during September, the rain falls for 6.1 days and regularly aggregates up to 0.47" (12mm) of precipitation. Throughout the year, there are 99.9 rainfall days, and 8.66" (220mm) of precipitation is accumulated.

Snowfall

January through April, September through December are months with snowfall in Thorp, Washington. September is the first month it typically snows in Thorp. Throughout September, in the average 0.3 snowfall days, it receives 0.31" (8mm) of snow. In Thorp, Washington, during the entire year, snow falls for 35.4 days, and aggregates up to 15.59" (396mm) of snow.

Daylight

In Thorp, Washington, the average length of the day in September is 12.5h.

Sunshine

In September, the average sunshine is 10.7h.

UV index

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions - Protection against the 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 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.
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FAQ

What is the average humidity in September in Thorp?

In September, the average relative humidity in Thorp, Washington, is 54%.

How many days does it rain in September in Thorp?

In Thorp, in September, during 6.1 rainfall days, 0.47" (12mm) of precipitation is typically accumulated.

When does it start to snow in Thorp?

September is the first month it typically snows in Thorp, Washington. Throughout September, in the average 0.3 snowfall days, it receives 0.31" (8mm) of snow.

How many hours of daylight does Thorp have in September?

In Thorp, Washington, the average length of the day in September is 12.5h.

How long on average sun shines in September in Thorp?

The average sunshine in September in Thorp, Washington, is 10.7h.

How high is the UV index in September in Thorp?

The average daily maximum UV index in September in Thorp, Washington, is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in September
Thorp, WA

Average temperature in September - Thorp, WA
  • Average high temperature in September: 71.1°F

The warmest months (with the highest average high temperature) are July and August (82°F).
The month with the lowest average high temperature is December (33.3°F).

  • Average low temperature in September: 49.1°F

The month with the highest average low temperature is August (55.2°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).

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Average pressure in September
Thorp, WA

Average pressure in September - Thorp, WA
  • Average pressure in September: 29.97"

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is August (29.94").

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Average wind speed in September
Thorp, WA

Average wind speed in September - Thorp, WA
  • Average wind speed in September: 6.9mph

The windiest month (with the highest average wind speed) is June (8.9mph).
The calmest month (with the lowest average wind speed) is December (4.2mph).

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Average humidity in September
Thorp, WA

Average humidity in September - Thorp, WA
  • Average humidity in September: 54%

The month with the highest relative humidity is January (87%).
Months with the lowest relative humidity are July and August (46%).

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Average rainfall in September
Thorp, WA

Average rainfall in September - Thorp, WA
  • Average rainfall in September: 0.47"

The wettest month (with the highest rainfall) is December (1.3").
The driest month (with the least rainfall) is July (0.16").

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Average rainfall days in September
Thorp, WA

Average rainfall days in September - Thorp, WA
  • Average rainfall days in September: 6.1 days

The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is August (2.8 days).

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Average snowfall in September
Thorp, WA

Average snowfall in September - Thorp, WA
  • Average snowfall in September: 0.31"

The month with the highest snowfall is December (4.65").
Months with the least snowfall are May, June, July and August (0").

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Average snowfall days in September
Thorp, WA

Average snowfall days in September - Thorp, WA
  • Average snowfall days in September: 0.3 days

Months with the highest number of snowfall days are January and December (8.7 days).
Months with the least snowfall days are May, June, July and August (0 days).

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

Average daylight in September / Average sunshine in September - Thorp, WA
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.9h).
The month with the shortest days is December (Average daylight: 8.6h).

  • Average sunshine in September: 10.7h

Months with the most sunshine are July and August (Average sunshine: 12h).
Months with the least sunshine are January and December (Average sunshine: 4.8).

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Average sunshine days in September
Thorp, WA

Average sunshine days in September - Thorp, WA
  • Average sunshine days in September: 22.8 days

The month with the most sunshine days is July (27.1 days).
The month with the least sunshine days is February (13.5 days).

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Average UV index in September
Thorp, WA

Average UV index in September - Thorp, WA
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in September
Thorp, WA

Average cloud cover in September - Thorp, WA
  • Average cloud cover in September: 18

The month with the most cloud cover is January (Cloud cover 48).
Months with the least cloud cover are July and August (Cloud cover 11).

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Average visibility in September
Thorp, WA

Average visibility in September - Thorp, WA
  • Average visibility in September: 6mi

Months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January and December (4mi).

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