September weather forecast
Canyon Lake, CA

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Weather in September

The first month of the autumn, September, is still a warm month in Canyon Lake, California, with an average temperature fluctuating between 85.3°F (29.6°C) and 61.7°F (16.5°C).

Temperature

Canyon Lake experiences an average high-temperature of a warm 85.3°F (29.6°C) in September, subtly different from August's 89.1°F (31.7°C). Canyon Lake in September observes a sharp transition from the daytime heat, falling to an average low of 61.7°F (16.5°C).

Heat index

The heat index value during September is evaluated at a tropical 87.8°F (31°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
In the scope of the heat index, its values resonate with shade and light wind conditions. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.

Humidity

The average relative humidity in September is 51%.

Rainfall

In Canyon Lake, during September, the rain falls for 1.8 days and regularly aggregates up to 0.04" (1mm) of precipitation. Throughout the year, there are 34.6 rainfall days, and 2.56" (65mm) of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of September, sunrise is at 6:23 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:34 pm PDT.

Sunshine

In Canyon Lake, the average sunshine in September is 10.6h.

UV index

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 6 in September leads to these recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in September?

September temperatures vary between a high-temperature of 85.3°F (29.6°C) and a low-temperature of 61.7°F (16.5°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, is evaluated at 87.8°F (31°C).

What is the average humidity in September?

In September, the average relative humidity is 51%.

How many days does it rain in September in Canyon Lake?

In September, the rain falls for 1.8 days. Throughout September, 0.04" (1mm) of precipitation is accumulated.

How many hours of daylight does Canyon Lake have in September?

The average day length in September is 12h and 22min.

When is the sunrise / sunset in September in Canyon Lake?

On the first day of September, sunrise is at 6:23 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:34 pm PDT.

How long on average sun shines in September?

In Canyon Lake, the average sunshine duration in September is 10.6h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Canyon Lake, CA

Average temperature in September - Canyon Lake, CA
  • Average high temperature in September: 85.3°F

The warmest month (with the highest average high temperature) is August (89.1°F).
The month with the lowest average high temperature is December (61.5°F).

  • Average low temperature in September: 61.7°F

The month with the highest average low temperature is August (63.3°F).
The coldest month (with the lowest average low temperature) is December (43.7°F).

Average pressure in September
Canyon Lake, CA

Average pressure in September - Canyon Lake, CA
  • Average pressure in September: 29.87"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in September
Canyon Lake, CA

Average wind speed in September - Canyon Lake, CA
  • Average wind speed in September: 4.1mph

The windiest month (with the highest average wind speed) is April (5.4mph).
The calmest months (with the lowest average wind speed) are August and September (4.1mph).

Average humidity in September
Canyon Lake, CA

Average humidity in September - Canyon Lake, CA
  • Average humidity in September: 51%

The month with the highest relative humidity is May (62%).
The months with the lowest relative humidity are August and November (50%).

Average rainfall in September
Canyon Lake, CA

Average rainfall in September - Canyon Lake, CA
  • Average rainfall in September: 0.04"

The wettest month (with the highest rainfall) is February (0.55").
The driest month (with the least rainfall) is June (0").

Average rainfall days in September
Canyon Lake, CA

Average rainfall days in September - Canyon Lake, CA
  • Average rainfall days in September: 1.8 days

The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.8 days).

Average daylight in September /
Average sunshine in September
Canyon Lake, CA

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

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 10h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

Average sunshine days in September
Canyon Lake, CA

Average sunshine days in September - Canyon Lake, CA
  • Average sunshine days in September: 26.6 days

The month with the most sunshine days is June (28.6 days).
The month with the least sunshine days is February (22.8 days).

Average UV index in September
Canyon Lake, CA

Average UV index in September - Canyon Lake, CA
  • Average UV index in September: 6

The month with the highest UV index is August (UV index 7).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in September
Canyon Lake, CA

Average cloud cover in September - Canyon Lake, CA
  • Average cloud cover in September: 8

The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 5).

Average visibility in September
Canyon Lake, CA

Average visibility in September - Canyon Lake, 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).

Canyon Lake, California, USA

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