September weather forecast
Del Monte Forest, CA

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Weather in September

September, the first month of the autumn in Del Monte Forest, is also an agreeable month, with an average temperature fluctuating between 55.4°F (13°C) and 69.6°F (20.9°C).

Temperature

In Del Monte Forest, temperatures reach their average annual highs in September, measuring 69.6°F (20.9°C) and a minimum average of 55.4°F (13°C).

Humidity

In September, the average relative humidity in Del Monte Forest is 75%.

Rainfall

In Del Monte Forest, during September, the rain falls for 2.4 days and regularly aggregates up to 0.08" (2mm) of precipitation. Throughout the year, there are 70 rainfall days, and 11.93" (303mm) of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 24min.
On the first day of the month, sunrise is at 6:39 am and sunset at 7:35 pm. On the last day of September, in Del Monte Forest, sunrise is at 7:02 am and sunset at 6:52 pm PDT.

Sunshine

In September, the average sunshine is 11h.

UV index

The months with the highest UV index in Del Monte Forest are June through September, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months in Del Monte Forest?

September brings the highest temperatures in Del Monte Forest, with an average high of 69.6°F (20.9°C) and an average low of 55.4°F (13°C).

What are the temperatures in Del Monte Forest in September?

September temperatures in Del Monte Forest, California, vary between a high-temperature of 69.6°F (20.9°C) and a low-temperature of 55.4°F (13°C).

What is the average humidity in September in Del Monte Forest?

In Del Monte Forest, the average relative humidity in September is 75%.

How much does it rain in Del Monte Forest in September?

In Del Monte Forest, in September, it is raining for 2.4 days, with typically 0.08" (2mm) of accumulated precipitation.

What is the average length of the day in September in Del Monte Forest?

In September, the average day length is 12h and 24min.

When is the sunrise / sunset in September in Del Monte Forest?

In September, on the first day of the month, sunrise is at 6:39 am and sunset at 7:35 pm. On the last day of the month, in Del Monte Forest, sunrise is at 7:02 am and sunset at 6:52 pm PDT.

How many hours of sunshine does Del Monte Forest have in September?

In September, the average sunshine duration is 11h.

What is the month with the highest UV index in Del Monte Forest?

The months with the highest UV index are June through September, with an average maximum UV index of 5.

What is the UV index reading in September in Del Monte Forest?

In Del Monte Forest, California, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability 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
Del Monte Forest, CA

Average temperature in September - Del Monte Forest, CA
  • Average high temperature in September: 69.6°F

The warmest month (with the highest average high temperature) is September (69.6°F).
The month with the lowest average high temperature is December (57°F).

  • Average low temperature in September: 55.4°F

The month with the highest average low temperature is September (55.4°F).
The coldest month (with the lowest average low temperature) is December (46.9°F).

Average pressure in September
Del Monte Forest, CA

Average pressure in September - Del Monte Forest, CA
  • Average pressure in September: 29.93"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.93"Hg).

Average wind speed in September
Del Monte Forest, CA

Average wind speed in September - Del Monte Forest, CA
  • Average wind speed in September: 6.3mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in September
Del Monte Forest, CA

Average humidity in September - Del Monte Forest, CA
  • Average humidity in September: 75%

The month with the highest relative humidity is August (79%).
The month with the lowest relative humidity is November (70%).

Average rainfall in September
Del Monte Forest, CA

Average rainfall in September - Del Monte Forest, CA
  • Average rainfall in September: 0.08"

The wettest month (with the highest rainfall) is December (2.48").
The driest month (with the least rainfall) is August (0.04").

Average rainfall days in September
Del Monte Forest, CA

Average rainfall days in September - Del Monte Forest, CA
  • Average rainfall days in September: 2.4 days

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (1.3 days).

Average daylight in September /
Average sunshine in September
Del Monte Forest, CA

Average daylight in September / Average sunshine in September - Del Monte Forest, CA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in September: 11h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

Average sunshine days in September
Del Monte Forest, CA

Average sunshine days in September - Del Monte Forest, CA
  • Average sunshine days in September: 26.8 days

The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (17.3 days).

Average UV index in September
Del Monte Forest, CA

Average UV index in September - Del Monte Forest, CA
  • Average UV index in September: 5

The months with the highest UV index are June, July, August and September (UV index 5).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in September
Del Monte Forest, CA

Average cloud cover in September - Del Monte Forest, CA
  • Average cloud cover in September: 15

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 13).

Average visibility in September
Del Monte Forest, CA

Average visibility in September - Del Monte Forest, 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).

Del Monte Forest, California, USA

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