September weather forecast
Darwin, CA

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Weather in September

September, the first month of the autumn in Darwin, is still a warm month, with an average temperature fluctuating between 60.3°F (15.7°C) and 78.1°F (25.6°C).

Temperature

September brings a slight decrease in the average high-temperature, shifting from a warm 85.5°F (29.7°C) in August to a still moderately hot 78.1°F (25.6°C). Darwin witnesses a consistent average low-temperature of 60.3°F (15.7°C) throughout September.

Humidity

The average relative humidity in September in Darwin is 22%.

Rainfall

The months with the least rainfall are June and September Rain falls for 2.3 days and accumulates 0.16" (4mm) of rain.

Snowfall

In Darwin, snow does not fall in May through October.

Daylight

In Darwin, the average length of the day in September is 12h and 23min.
On the first day of September in Darwin, sunrise is at 6:22 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:34 pm PDT.

Sunshine

In September, the average sunshine in Darwin is 10.9h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 5 in September translates into these instructions:
Undertake precautions - Guarding against sun damage is counselled. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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Frequently asked questions

What is the temperature in September in Darwin?

During September, Darwin experiences an average high-temperature of 78.1°F (25.6°C) and a low-temperature of 60.3°F (15.7°C).

What is the average humidity in September in Darwin?

In September, the average relative humidity in Darwin, California, is 22%.

What is the driest month in Darwin?

June and September are months with the least rain in Darwin, California, when the rain falls for 2.3 days and typically aggregates up to 0.16" (4mm) of rain.

How many days does it rain in September in Darwin?

In Darwin, in September, during 2.3 rainfall days, 0.16" (4mm) of precipitation is typically accumulated.

When it does not snow in Darwin?

In Darwin, snow does not fall in May through October.

How many hours of daylight does Darwin have in September?

In Darwin, California, the average day length in September is 12h and 23min.

What time are sunrise and sunset in September in Darwin?

On the first day of September in Darwin, California, sunrise is at 6:22 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:34 pm PDT.

How many hours of sunshine does Darwin have in September?

The average sunshine duration in September in Darwin, California, is 10.9h.

What is the UV index reading in September in Darwin?

The average daily maximum UV index in September in Darwin is 5. 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
Darwin, CA

Average temperature in September - Darwin, CA
  • Average high temperature in September: 78.1°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (46.9°F).

  • Average low temperature in September: 60.3°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is December (31.5°F).

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Average pressure in September
Darwin, CA

Average pressure in September - Darwin, CA
  • Average pressure in September: 29.89"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

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Average wind speed in September
Darwin, CA

Average wind speed in September - Darwin, CA
  • Average wind speed in September: 6.2mph

The windiest months (with the highest average wind speed) are April, May and June (7.6mph).
The calmest month (with the lowest average wind speed) is November (5.8mph).

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Average humidity in September
Darwin, CA

Average humidity in September - Darwin, CA
  • Average humidity in September: 22%

The month with the highest relative humidity is December (47%).
The month with the lowest relative humidity is August (19%).

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Average rainfall in September
Darwin, CA

Average rainfall in September - Darwin, CA
  • Average rainfall in September: 0.16"

The wettest month (with the highest rainfall) is December (0.67").
The driest months (with the least rainfall) are June and September (0.16").

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Average rainfall days in September
Darwin, CA

Average rainfall days in September - Darwin, CA
  • Average rainfall days in September: 2.3 days

The month with the highest number of rainy days is March (5.7 days).
The month with the least rainy days is September (2.3 days).

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Average snowfall in September
Darwin, CA

Average snowfall in September - Darwin, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is December (1.18").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Darwin, CA

Average snowfall days in September - Darwin, CA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (1.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Darwin, CA

Average daylight in September / Average sunshine in September - Darwin, CA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in September: 10h and 5min

The month with the most sunshine is June (Average sunshine: 12h and 12min).
The months with the least sunshine are January, February and December (Average sunshine: 7h and 18min).

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Average sunshine days in September
Darwin, CA

Average sunshine days in September - Darwin, CA
  • Average sunshine days in September: 25 days

The month with the most sunshine days is October (27.7 days).
The month with the least sunshine days is July (20 days).

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Average UV index in September
Darwin, CA

Average UV index in September - Darwin, CA
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are November and December (UV index 2).

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Average cloud cover in September
Darwin, CA

Average cloud cover in September - Darwin, CA
  • Average cloud cover in September: 5

The month with the most cloud cover is January (Cloud cover 16).
The months with the least cloud cover are August and September (Cloud cover 5).

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Average visibility in September
Darwin, CA

Average visibility in September - Darwin, CA
  • Average visibility in September: 6mi

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

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Darwin, California, USA

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