September weather forecast
Dunlap, CA

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Weather in September

September, the first month of the autumn in Dunlap, is also a moderately hot month, with an average temperature ranging between min 57.7°F (14.3°C) and max 85.1°F (29.5°C).

Temperature

The transition to September results in a modest reduction in average high-temperature, moving from a tropical 91°F (32.8°C) in August to a moderately hot 85.1°F (29.5°C). Dunlap's average low-temperature for the month of September denotes a significant decline from the daily high, recording at a moderate 57.7°F (14.3°C).

Humidity

In September, the average relative humidity is 33%.

Rainfall

In September, the rain falls for 2.9 days. Throughout September, 0.24" (6mm) of precipitation is accumulated. In Dunlap, during the entire year, the rain falls for 67.6 days and collects up to 17.52" (445mm) of precipitation.

Snowfall

In Dunlap, snow does not fall in May through October.

Daylight

In September, the average length of the day in Dunlap, California, is 12h and 24min.
On the first day of September, sunrise is at 6:28 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:40 pm PDT.

Sunshine

In September, the average sunshine is 11.1h.

UV index

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 5 in September translates into these instructions:
Be vigilant - Suggestions to stave off sun damage are provided. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Updated: Jul 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is September?

The average high-temperature and low-temperature during September are 85.1°F (29.5°C) and 57.7°F (14.3°C) respectively.

What is the average humidity in September?

In September, the average relative humidity is 33%.

How many days does it rain in September?

In Dunlap, during September, the rain falls for 2.9 days and regularly aggregates up to 0.24" (6mm) of precipitation.

When it does not snow in Dunlap?

May through October are months without snowfall.

What is the average length of the day in September?

The average day length in September is 12h and 24min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:28 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:40 pm PDT.

How many hours of sunshine does Dunlap have in September?

In September, the average sunshine duration is 11.1h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe 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
Dunlap, CA

Average temperature in September - Dunlap, CA
  • Average high temperature in September: 85.1°F

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is December (52.3°F).

  • Average low temperature in September: 57.7°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is December (36.1°F).

Average pressure in September
Dunlap, CA

Average pressure in September - Dunlap, CA
  • Average pressure in September: 29.92"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in September
Dunlap, CA

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

The windiest months (with the highest average wind speed) are March and June (4.5mph).
The calmest month (with the lowest average wind speed) is December (3.4mph).

Average humidity in September
Dunlap, CA

Average humidity in September - Dunlap, CA
  • Average humidity in September: 33%

The months with the highest relative humidity are January and February (64%).
The month with the lowest relative humidity is August (30%).

Average rainfall in September
Dunlap, CA

Average rainfall in September - Dunlap, CA
  • Average rainfall in September: 0.24"

The wettest month (with the highest rainfall) is February (3.62").
The driest months (with the least rainfall) are June and August (0.12").

Average rainfall days in September
Dunlap, CA

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

The month with the highest number of rainy days is March (11.1 days).
The month with the least rainy days is August (1.6 days).

Average snowfall in September
Dunlap, CA

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

The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Dunlap, CA

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

The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Dunlap, 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 1min

The month with the most sunshine is June (Average sunshine: 12h and 12min).
The months with the least sunshine are February and December (Average sunshine: 6h and 42min).

Average sunshine days in September
Dunlap, CA

Average sunshine days in September - Dunlap, CA
  • Average sunshine days in September: 25.1 days

The month with the most sunshine days is October (27.1 days).
The month with the least sunshine days is February (18.8 days).

Average UV index in September
Dunlap, CA

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

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 2).

Average cloud cover in September
Dunlap, CA

Average cloud cover in September - Dunlap, CA
  • Average cloud cover in September: 5

The month with the most cloud cover is March (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 4).

Average visibility in September
Dunlap, CA

Average visibility in September - Dunlap, 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).

Dunlap, California, USA

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