September weather forecast and climate
Adelanto, CA

Weather in September

September, the first month of the autumn, in Adelanto, is still a warm month, with average temperature fluctuating between 85.8°F (29.9°C) and 63.5°F (17.5°C).

Temperature

In September, the average high-temperature slightly decreases, from a hot 91.9°F (33.3°C) in August, to a moderately hot 85.8°F (29.9°C). The average low-temperature, in Adelanto, California, is 63.5°F (17.5°C).

Humidity

In September, the average relative humidity is 32%.

Rainfall

In Adelanto, during September, the rain falls for 2.7 days and regularly aggregates up to 0.28" (7mm) of precipitation. In Adelanto, during the entire year, the rain falls for 44.8 days and collects up to 4.8" (122mm) of precipitation.

Snowfall

March, May through October are months without snowfall.

Daylight

In Adelanto, California, the average length of the day is 12.4h.

Sunshine

In Adelanto, the average sunshine in September is 10.7h.

UV index

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 6 in September transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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.
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FAQ

What is the temperature in September in Adelanto?

In September, in Adelanto, the average high-temperature is 85.8°F (29.9°C), and the average low-temperature is 63.5°F (17.5°C).

What is the average humidity in September in Adelanto?

In Adelanto, California, the average relative humidity in September is 32%.

How many days does it rain in September in Adelanto?

In Adelanto, in September, during 2.7 rainfall days, 0.28" (7mm) of precipitation is typically accumulated.

When it does not snow in Adelanto?

In Adelanto snow does not fall in March, May through October.

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

The average length of the day in September in Adelanto, California, is 12.4h.

How long on average sun shines in September in Adelanto?

The average sunshine in September is 10.7h.

What is the UV index reading in September in Adelanto?

In Adelanto, California, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the UV radiation.

Average temperature in September
Adelanto, CA

Average temperature in September - Adelanto, CA
  • Average high temperature in September: 85.8°F

The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is December (53.2°F).

  • Average low temperature in September: 63.5°F

The month with the highest average low temperature is August (68.5°F).
The coldest month (with the lowest average low temperature) is December (38.3°F).

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Average pressure in September
Adelanto, CA

Average pressure in September - Adelanto, CA
  • Average pressure in September: 29.87"

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is June (29.83").

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Average wind speed in September
Adelanto, CA

Average wind speed in September - Adelanto, CA
  • Average wind speed in September: 7.2mph

The windiest month (with the highest average wind speed) is May (10.3mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).

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Average humidity in September
Adelanto, CA

Average humidity in September - Adelanto, CA
  • Average humidity in September: 32%

The month with the highest relative humidity is December (52%).
The month with the lowest relative humidity is August (27%).

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Average rainfall in September
Adelanto, CA

Average rainfall in September - Adelanto, CA
  • Average rainfall in September: 0.28"

The wettest month (with the highest rainfall) is December (0.98").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in September
Adelanto, CA

Average rainfall days in September - Adelanto, CA
  • Average rainfall days in September: 2.7 days

The month with the highest number of rainy days is March (6 days).
The month with the least rainy days is June (0.9 days).

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Average snowfall in September
Adelanto, CA

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

The month with the highest snowfall is November (1.73").
Months with the least snowfall are March, May, June, July, August, September and October (0").

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Average snowfall days in September
Adelanto, CA

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

The month with the highest number of snowfall days is February (1 days).
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
Adelanto, CA

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

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 10.7h

Months with the most sunshine are June and July (Average sunshine: 12.1h).
Months with the least sunshine are January and December (Average sunshine: 7).

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Average sunshine days in September
Adelanto, CA

Average sunshine days in September - Adelanto, CA
  • Average sunshine days in September: 25.9 days

The month with the most sunshine days is June (28.9 days).
The month with the least sunshine days is February (22.4 days).

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Average UV index in September
Adelanto, CA

Average UV index in September - Adelanto, CA
  • Average UV index in September: 6

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Adelanto, CA

Average cloud cover in September - Adelanto, CA
  • Average cloud cover in September: 6

The month with the most cloud cover is December (Cloud cover 21).
Months with the least cloud cover are June and August (Cloud cover 5).

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Average visibility in September
Adelanto, CA

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

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

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