September weather forecast
Morongo Valley, CA

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Weather in September

The first month of the autumn, September, is still a hot month in Morongo Valley, California, with temperature in the range of an average low of 66.6°F (19.2°C) and an average high of 86.2°F (30.1°C).

Temperature

September's onset brings a negligible change in high-temperatures, falling from a tropical 92.1°F (33.4°C) in August to a still hot 86.2°F (30.1°C). September nights in Morongo Valley are marked by an average temperature drop to a refreshing 66.6°F (19.2°C).

Humidity

The average relative humidity in September in Morongo Valley is 30%.

Rainfall

In Morongo Valley, in September, it is raining for 2.3 days, with typically 0.16" (4mm) of accumulated precipitation. In Morongo Valley, during the entire year, the rain falls for 33.5 days and collects up to 2.83" (72mm) of precipitation.

Snowfall

January, March through November are months without snowfall in Morongo Valley.

Daylight

In Morongo Valley, the average length of the day in September is 12h and 22min.
On the first day of September, sunrise is at 6:20 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:31 pm PDT.

Sunshine

In Morongo Valley, the average sunshine in September is 10.5h.

UV index

The average daily maximum UV index in September in Morongo Valley is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: A daily high UV index of 6 in September leads to these guidelines:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
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Frequently asked questions

How hot is September in Morongo Valley?

The high-temperature, in September, in Morongo Valley, records 86.2°F (30.1°C), while the low-temperature is 66.6°F (19.2°C).

What is the average humidity in September in Morongo Valley?

The average relative humidity in September in Morongo Valley is 30%.

How much does it rain in Morongo Valley in September?

In September, in Morongo Valley, California, the rain falls for 2.3 days. Throughout September, 0.16" (4mm) of precipitation is accumulated.

When it does not snow in Morongo Valley?

In Morongo Valley, California, snow does not fall in January, March through November.

How many hours of daylight does Morongo Valley have in September?

In September, the average day length is 12h and 22min.

When is the sunrise / sunset in September in Morongo Valley?

On the first day of September in Morongo Valley, California, sunrise is at 6:20 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:31 pm PDT.

How long on average sun shines in September in Morongo Valley?

In Morongo Valley, California, the average sunshine duration in September is 10.5h.

How high is the UV index in September in Morongo Valley?

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
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
Morongo Valley, CA

Average temperature in September - Morongo Valley, CA
  • Average high temperature in September: 86.2°F

The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is December (55.9°F).

  • Average low temperature in September: 66.6°F

The month with the highest average low temperature is August (70.9°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).

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Average pressure in September
Morongo Valley, CA

Average pressure in September - Morongo Valley, CA
  • Average pressure in September: 29.84"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).

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Average wind speed in September
Morongo Valley, CA

Average wind speed in September - Morongo Valley, CA
  • Average wind speed in September: 6.6mph

The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest month (with the lowest average wind speed) is January (6.5mph).

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Average humidity in September
Morongo Valley, CA

Average humidity in September - Morongo Valley, CA
  • Average humidity in September: 30%

The month with the highest relative humidity is December (47%).
The month with the lowest relative humidity is August (26%).

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Average rainfall in September
Morongo Valley, CA

Average rainfall in September - Morongo Valley, CA
  • Average rainfall in September: 0.16"

The wettest month (with the highest rainfall) is December (0.47").
The driest month (with the least rainfall) is June (0").

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Average rainfall days in September
Morongo Valley, CA

Average rainfall days in September - Morongo Valley, CA
  • Average rainfall days in September: 2.3 days

The months with the highest number of rainy days are July and December (4 days).
The month with the least rainy days is June (0.8 days).

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Average snowfall in September
Morongo Valley, CA

Average snowfall in September - Morongo Valley, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is December (0.35").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Morongo Valley, CA

Average snowfall days in September - Morongo Valley, CA
  • Average snowfall days in September: 0 days

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

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Average daylight in September /
Average sunshine in September
Morongo Valley, CA

Average daylight in September / Average sunshine in September - Morongo Valley, 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: 9h and 54min).

  • Average sunshine in September: 10h and 3min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

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Average sunshine days in September
Morongo Valley, CA

Average sunshine days in September - Morongo Valley, CA
  • Average sunshine days in September: 26.6 days

The month with the most sunshine days is October (28.8 days).
The month with the least sunshine days is July (24.5 days).

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Average UV index in September
Morongo Valley, CA

Average UV index in September - Morongo Valley, CA
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are November and December (UV index 3).

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Average cloud cover in September
Morongo Valley, CA

Average cloud cover in September - Morongo Valley, CA
  • Average cloud cover in September: 6

The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 5).

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Average visibility in September
Morongo Valley, CA

Average visibility in September - Morongo Valley, 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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Morongo Valley, California, USA

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