September weather forecast
Mountain Ranch, CA

Share

Weather in September

The first month of the autumn, September, is still a warm month in Mountain Ranch, California, with temperature in the range of an average low of 57°F (13.9°C) and an average high of 85.6°F (29.8°C).

Temperature

The onset of September marks an average high-temperature of a warm 85.6°F (29.8°C), hardly differing from August's 91°F (32.8°C). Mountain Ranch's September nights bring a significant temperature shift, averaging at a moderate 57°F (13.9°C).

Humidity

In September, the average relative humidity is 39%.

Rainfall

In September, in Mountain Ranch, the rain falls for 3.3 days. Throughout September, 0.2" (5mm) of precipitation is accumulated. Throughout the year, there are 73.3 rainfall days, and 16.42" (417mm) of precipitation is accumulated.

Daylight

In Mountain Ranch, California, the average length of the day in September is 12h and 25min.
On the first day of September, sunrise is at 6:32 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:46 pm PDT.

Sunshine

The average sunshine in September is 11.3h.

UV index

In Mountain Ranch, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: In September, a daily UV index of 5 turns into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
[Resources]

Frequently asked questions

How hot does it get in Mountain Ranch in September?

The high-temperature during September is 85.6°F (29.8°C) and the low-temperature is 57°F (13.9°C). In June, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is appraised at 84.2°F (29°C).

What is the average humidity in September in Mountain Ranch?

In September, the average relative humidity in Mountain Ranch is 39%.

How many days does it rain in September in Mountain Ranch?

In Mountain Ranch, in September, during 3.3 rainfall days, 0.2" (5mm) of precipitation is typically accumulated.

What is the average length of the day in September in Mountain Ranch?

The average day length in September in Mountain Ranch is 12h and 25min.

When are sunrise and sunset in September in Mountain Ranch?

In September, on the first day of the month, sunrise is at 6:32 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:46 pm PDT.

How many hours of sunshine does Mountain Ranch have in September?

In Mountain Ranch, the average sunshine duration in September is 11.3h.

What is the UV index reading in September in Mountain Ranch?

In Mountain Ranch, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe 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
Mountain Ranch, CA

Average temperature in September - Mountain Ranch, CA
  • Average high temperature in September: 85.6°F

The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is December (53.6°F).

  • Average low temperature in September: 57°F

The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is December (37.8°F).

[Resources]

Average pressure in September
Mountain Ranch, CA

Average pressure in September - Mountain Ranch, CA
  • Average pressure in September: 29.93"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

[Resources]

Average wind speed in September
Mountain Ranch, CA

Average wind speed in September - Mountain Ranch, CA
  • Average wind speed in September: 4.4mph

The windiest month (with the highest average wind speed) is February (5.6mph).
The calmest months (with the lowest average wind speed) are August and September (4.4mph).

[Resources]

Average humidity in September
Mountain Ranch, CA

Average humidity in September - Mountain Ranch, CA
  • Average humidity in September: 39%

The month with the highest relative humidity is March (72%).
The month with the lowest relative humidity is July (37%).

[Resources]

Average rainfall in September
Mountain Ranch, CA

Average rainfall in September - Mountain Ranch, CA
  • Average rainfall in September: 0.2"

The wettest month (with the highest rainfall) is March (3.39").
The driest months (with the least rainfall) are July and August (0.04").

[Resources]

Average rainfall days in September
Mountain Ranch, CA

Average rainfall days in September - Mountain Ranch, CA
  • Average rainfall days in September: 3.3 days

The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is July (1.7 days).

[Resources]

Average daylight in September /
Average sunshine in September
Mountain Ranch, CA

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in September: 11h and 2min

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

[Resources]

Average sunshine days in September
Mountain Ranch, CA

Average sunshine days in September - Mountain Ranch, CA
  • Average sunshine days in September: 26.4 days

The month with the most sunshine days is July (28.2 days).
The month with the least sunshine days is March (16.9 days).

[Resources]

Average UV index in September
Mountain Ranch, CA

Average UV index in September - Mountain Ranch, CA
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

[Resources]

Average cloud cover in September
Mountain Ranch, CA

Average cloud cover in September - Mountain Ranch, CA
  • Average cloud cover in September: 7

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 4).

[Resources]

Average visibility in September
Mountain Ranch, CA

Average visibility in September - Mountain Ranch, 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).

[Resources]

Mountain Ranch, California, USA

Weather forecast for your location

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