September weather forecast and climate
Hemet, CA

Weather in September

The first month of the autumn, September, is also a moderately hot month in Hemet, California, with average temperature ranging between max 85.5°F (29.7°C) and min 61°F (16.1°C).

Temperature

In Hemet, the average high-temperature in September is essentially the same as in August - a warm 85.5°F (29.7°C). In Hemet, California, the average low-temperature is 61°F (16.1°C).

Heat index

In September, the average heat index is calculated to 85.6°F (29.8°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. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, metabolic differences, clothing, and differences in body mass, height, and shape affect individual temperature impact. 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

The average relative humidity in September is 44%.

Rainfall

In September, the rain falls for 2.9 days. Throughout September, 0.16" (4mm) of precipitation is accumulated. Throughout the year, in Hemet, there are 54 rainfall days, and 6.61" (168mm) of precipitation is accumulated.

Snowfall

In Hemet, California, snow does not fall in January through November.

Daylight

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

Sunshine

In Hemet, the average sunshine is 10.5h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
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.
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FAQ

What is the temperature in September in Hemet?

In Hemet, California, in September, the average high-temperature is 85.5°F (29.7°C), and the average low-temperature is 61°F (16.1°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), that combines both air temperature and relative humidity, is evaluated at 85.6°F (29.8°C).

What is the average humidity in September in Hemet?

In September, the average relative humidity in Hemet, California, is 44%.

How much does it rain in Hemet in September?

In Hemet, California, in September, it is raining for 2.9 days, with typically 0.16" (4mm) of accumulated precipitation.

When it does not snow in Hemet?

In Hemet, California, snow does not fall in January through November.

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

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

How long on average sun shines in September in Hemet?

In September, the average sunshine in Hemet, California, is 10.5h.

What is the UV index reading in September in Hemet?

The average daily maximum UV index in September in Hemet is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in September
Hemet, CA

Average temperature in September - Hemet, CA
  • Average high temperature in September: 85.5°F

The warmest month (with the highest average high temperature) is August (90.5°F).
The month with the lowest average high temperature is December (58.6°F).

  • Average low temperature in September: 61°F

The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is December (41°F).

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Average pressure in September
Hemet, CA

Average pressure in September - Hemet, CA
  • Average pressure in September: 29.86"

The month with the highest atmospheric pressure is January (30.09").
The month with the lowest atmospheric pressure is June (29.84").

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Average wind speed in September
Hemet, CA

Average wind speed in September - Hemet, CA
  • Average wind speed in September: 4.7mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.7mph).

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Average humidity in September
Hemet, CA

Average humidity in September - Hemet, CA
  • Average humidity in September: 44%

Months with the highest relative humidity are February, March and May (56%).
The month with the lowest relative humidity is August (41%).

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Average rainfall in September
Hemet, CA

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

The wettest month (with the highest rainfall) is February (1.38").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in September
Hemet, CA

Average rainfall days in September - Hemet, CA
  • Average rainfall days in September: 2.9 days

The month with the highest number of rainy days is March (7.4 days).
The month with the least rainy days is June (1.6 days).

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Average snowfall in September
Hemet, CA

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

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

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Average snowfall days in September
Hemet, CA

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

The month with the highest number of snowfall days is December (0.1 days).
Months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in September / Average sunshine in September - Hemet, 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: 10.5h

Months with the most sunshine are June and July (Average sunshine: 12.1h).
Months with the least sunshine are February and December (Average sunshine: 6.7).

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Average sunshine days in September
Hemet, CA

Average sunshine days in September - Hemet, CA
  • Average sunshine days in September: 24.5 days

The month with the most sunshine days is October (27.4 days).
The month with the least sunshine days is February (20.9 days).

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Average UV index in September
Hemet, CA

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

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are November and December (UV index 3).

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Average cloud cover in September
Hemet, CA

Average cloud cover in September - Hemet, CA
  • Average cloud cover in September: 8

Months with the most cloud cover are March and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in September
Hemet, CA

Average visibility in September - Hemet, 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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