September weather forecast and climate
Asylum, CA

Weather in September

September, the first month of the autumn, in Asylum, is also a moderately hot month, with temperature in the range of an average high of 80.8°F (27.1°C) and an average low of 51.4°F (10.8°C).

Temperature

In Asylum, California, the average high-temperature is essentially the same as in August - a still warm 80.8°F (27.1°C). In Asylum, the average low-temperature is 51.4°F (10.8°C).

Heat index

In September, the average heat index is appraised at 82.6°F (28.1°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, clothing, metabolic differences), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

July and September, with an average relative humidity of 58%, are the least humid months in Asylum.

Rainfall

In Asylum, it is raining for 2.5 days, with typically 0.2" (5mm) of accumulated precipitation. In Asylum, during the entire year, the rain falls for 83.3 days and collects up to 17.72" (450mm) of precipitation.

Snowfall

January, March through December are months without snowfall.

Daylight

In Asylum, California, the average length of the day in September is 12.4h.

Sunshine

The average sunshine in Asylum is 10.9h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to the UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Asylum?

In Asylum, California, in September, the average high-temperature is 80.8°F (27.1°C), and the average low-temperature is 51.4°F (10.8°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), that factores the actual air temperature with the relative humidity, in September is evaluated at 82.6°F (28.1°C).

What are the least humid months in Asylum?

Months with the lowest humidity in Asylum are July and September, with an average relative humidity of 58%.

What is the average humidity in September in Asylum?

The average relative humidity in September in Asylum is 58%.

How many days does it rain in September in Asylum?

In September, in Asylum, California, the rain falls for 2.5 days. Throughout September, 0.2" (5mm) of precipitation is accumulated.

When it does not snow in Asylum?

In Asylum, California, snow does not fall in January, March through December.

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

In September, the average length of the day is 12.4h.

How long on average sun shines in September in Asylum?

In Asylum, California, the average sunshine in September is 10.9h.

What is the UV index reading in September in Asylum?

In September, the average daily maximum UV index in Asylum is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in September
Asylum, CA

Average temperature in September - Asylum, CA
  • Average high temperature in September: 80.8°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is December (53.6°F).

  • Average low temperature in September: 51.4°F

The month with the highest average low temperature is July (53.6°F).
The coldest month (with the lowest average low temperature) is December (37.4°F).

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Average pressure in September
Asylum, CA

Average pressure in September - Asylum, CA
  • Average pressure in September: 29.92"

The month with the highest atmospheric pressure is January (30.13").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed in September
Asylum, CA

Average wind speed in September - Asylum, CA
  • Average wind speed in September: 4.4mph

The windiest months (with the highest average wind speed) are April, May and June (5.5mph).
The calmest month (with the lowest average wind speed) is November (4.2mph).

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Average humidity in September
Asylum, CA

Average humidity in September - Asylum, CA
  • Average humidity in September: 58%

The month with the highest relative humidity is March (79%).
Months with the lowest relative humidity are July and September (58%).

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Average rainfall in September
Asylum, CA

Average rainfall in September - Asylum, CA
  • Average rainfall in September: 0.2"

The wettest months (with the highest rainfall) are February and December (3.11").
The driest months (with the least rainfall) are July and August (0.08").

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Average rainfall days in September
Asylum, CA

Average rainfall days in September - Asylum, CA
  • Average rainfall days in September: 2.5 days

The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is August (1.3 days).

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Average snowfall in September
Asylum, CA

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

The month with the highest snowfall is February (0.04").
Months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Asylum, CA

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

The month with the highest number of snowfall days is February (0.3 days).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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

Average daylight in September / Average sunshine in September - Asylum, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 10.9h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.3h).

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Average sunshine days in September
Asylum, CA

Average sunshine days in September - Asylum, CA
  • Average sunshine days in September: 26.9 days

The month with the most sunshine days is July (28.5 days).
The month with the least sunshine days is March (15.9 days).

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Average UV index in September
Asylum, CA

Average UV index in September - Asylum, CA
  • Average UV index in September: 4

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are February and November (UV index 2).

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Average cloud cover in September
Asylum, CA

Average cloud cover in September - Asylum, CA
  • Average cloud cover in September: 11

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in September
Asylum, CA

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

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

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