September weather forecast
Duncan Springs, CA

Share

Weather in September

September, the first month of the autumn in Duncan Springs, is still a warm month, with an average temperature ranging between max 82.4°F (28°C) and min 52.7°F (11.5°C).

Temperature

Stepping into September, Duncan Springs records an average high-temperature of a still moderately hot 82.4°F (28°C), almost consistent with August. Duncan Springs anticipates a pronounced temperature drop from daily highs during the nights of September, with an average low of 52.7°F (11.5°C).

Heat index

For most parts of September, the heat index is evaluated at 84.2°F (29°C). With prolonged exposure and constant activity, one might feel exhausted and experience heat cramps.
Heat index's context suggests values are appropriate for shady areas and slight breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.

Humidity

The months with the lowest humidity in Duncan Springs are July and September, with an average relative humidity of 57%.

Rainfall

In Duncan Springs, during September, the rain falls for 2.2 days and regularly aggregates up to 0.16" (4mm) of precipitation. In Duncan Springs, California, during the entire year, the rain falls for 82.4 days and collects up to 20.75" (527mm) of precipitation.

Snowfall

In Duncan Springs, snow does not fall in January, March through December.

Daylight

The average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 6:42 am and sunset at 7:42 pm. On the last day of September, sunrise is at 7:08 am and sunset at 6:56 pm PDT.

Sunshine

In September, the average sunshine in Duncan Springs is 10.9h.

UV index

In Duncan Springs, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 5 during September translates into the following directions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot in Duncan Springs during September?

In Duncan Springs, 82.4°F (28°C) is the average high-temperature and 52.7°F (11.5°C) is the average low-temperature during September. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is evaluated at 84.2°F (29°C).

What is the least humid month in Duncan Springs?

The months with the lowest humidity in Duncan Springs are July and September, with an average relative humidity of 57%.

What is the average humidity in September in Duncan Springs?

In September, the average relative humidity is 57%.

How much does it rain in Duncan Springs in September?

In Duncan Springs, California, in September, it is raining for 2.2 days, with typically 0.16" (4mm) of accumulated precipitation.

When it does not snow in Duncan Springs?

In Duncan Springs, California, snow does not fall in January, March through December.

What is the average length of the day in September in Duncan Springs?

In Duncan Springs, California, the average day length in September is 12h and 25min.

What time are sunrise and sunset in September in Duncan Springs?

On the first day of September in Duncan Springs, sunrise is at 6:42 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:56 pm PDT.

How long on average sun shines in September in Duncan Springs?

In Duncan Springs, the average sunshine duration in September is 10.9h.

What is the UV index reading in September in Duncan Springs?

The average daily maximum UV index in September in Duncan Springs is 5. A UV Index reading of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
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
Duncan Springs, CA

Average temperature in September - Duncan Springs, CA
  • Average high temperature in September: 82.4°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (54.9°F).

  • Average low temperature in September: 52.7°F

The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (38.5°F).

Average pressure in September
Duncan Springs, CA

Average pressure in September - Duncan Springs, CA
  • Average pressure in September: 29.92"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 (29.92"Hg).

Average wind speed in September
Duncan Springs, CA

Average wind speed in September - Duncan Springs, CA
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is May (6.3mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).

Average humidity in September
Duncan Springs, CA

Average humidity in September - Duncan Springs, CA
  • Average humidity in September: 57%

The month with the highest relative humidity is March (77%).
The months with the lowest relative humidity are July and September (57%).

Average rainfall in September
Duncan Springs, CA

Average rainfall in September - Duncan Springs, CA
  • Average rainfall in September: 0.16"

The wettest month (with the highest rainfall) is February (4.25").
The driest months (with the least rainfall) are July and August (0.04").

Average rainfall days in September
Duncan Springs, CA

Average rainfall days in September - Duncan Springs, CA
  • Average rainfall days in September: 2.2 days

The month with the highest number of rainy days is March (14.6 days).
The months with the least rainy days are July and August (1.2 days).

Average snowfall in September
Duncan Springs, CA

Average snowfall in September - Duncan Springs, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.16").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Duncan Springs, CA

Average snowfall days in September - Duncan Springs, CA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in September /
Average sunshine in September
Duncan Springs, CA

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 10h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in September
Duncan Springs, CA

Average sunshine days in September - Duncan Springs, CA
  • Average sunshine days in September: 27.3 days

The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is March (15.2 days).

Average UV index in September
Duncan Springs, CA

Average UV index in September - Duncan Springs, CA
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is November (UV index 2).

Average cloud cover in September
Duncan Springs, CA

Average cloud cover in September - Duncan Springs, CA
  • Average cloud cover in September: 10

The month with the most cloud cover is March (Cloud cover 43).
The months with the least cloud cover are July and August (Cloud cover 6).

Average visibility in September
Duncan Springs, CA

Average visibility in September - Duncan Springs, 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).

Duncan Springs, California, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location