September weather forecast
Winterwarm, CA

Share

Weather in September

The first month of the autumn, September, is still a warm month in Winterwarm, California, with an average temperature fluctuating between 81.7°F (27.6°C) and 61.9°F (16.6°C).

Temperature

With the arrival of September, Winterwarm's average high-temperature registers at a still warm 81.7°F (27.6°C), indicating a subtle variation from the previous month. Winterwarm experiences an average nighttime temperature of 61.9°F (16.6°C) in the month of September.

Heat index

In September, the average heat index is calculated to be 84.2°F (29°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.

Humidity

The average relative humidity in September in Winterwarm is 61%.

Rainfall

In September, in Winterwarm, the rain falls for 4.4 days. Throughout September, 0.31" (8mm) of precipitation is accumulated. Throughout the year, in Winterwarm, there are 63.6 rainfall days, and 8.98" (228mm) of precipitation is accumulated.

Daylight

In Winterwarm, the average length of the day in September is 12h and 22min.
On the first day of September, sunrise is at 6:23 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:34 pm PDT.

Sunshine

In September, the average sunshine in Winterwarm is 10.5h.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
[Resources]

Frequently asked questions

What is the usual temperature for Winterwarm in September?

The average high-temperature and low-temperature in Winterwarm, California, during September are 81.7°F (27.6°C) and 61.9°F (16.6°C) respectively. In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 84.2°F (29°C).

What is the average humidity in September in Winterwarm?

The average relative humidity in September in Winterwarm, California, is 61%.

How much does it rain in Winterwarm in September?

In Winterwarm, California, in September, during 4.4 rainfall days, 0.31" (8mm) of precipitation is typically accumulated.

How many hours of daylight does Winterwarm have in September?

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

What time are sunrise and sunset in September in Winterwarm?

On the first day of September in Winterwarm, California, sunrise is at 6:23 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:34 pm PDT.

How long on average sun shines in September in Winterwarm?

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

What is the month with the highest UV index in Winterwarm?

The months with the highest UV index in Winterwarm are June through September, with an average maximum UV index of 6.

What is the UV index intensity in September in Winterwarm?

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Winterwarm, CA

Average temperature in September - Winterwarm, CA
  • Average high temperature in September: 81.7°F

The warmest month (with the highest average high temperature) is August (83.3°F).
The month with the lowest average high temperature is December (63°F).

  • Average low temperature in September: 61.9°F

The month with the highest average low temperature is August (63°F).
The coldest months (with the lowest average low temperature) are February and December (46.9°F).

[Resources]

Average pressure in September
Winterwarm, CA

Average pressure in September - Winterwarm, CA
  • Average pressure in September: 29.88"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

[Resources]

Average wind speed in September
Winterwarm, CA

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

The windiest months (with the highest average wind speed) are April and May (5.5mph).
The calmest month (with the lowest average wind speed) is October (4.3mph).

[Resources]

Average humidity in September
Winterwarm, CA

Average humidity in September - Winterwarm, CA
  • Average humidity in September: 61%

The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is November (55%).

[Resources]

Average rainfall in September
Winterwarm, CA

Average rainfall in September - Winterwarm, CA
  • Average rainfall in September: 0.31"

The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.04").

[Resources]

Average rainfall days in September
Winterwarm, CA

Average rainfall days in September - Winterwarm, CA
  • Average rainfall days in September: 4.4 days

The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is June (1.2 days).

[Resources]

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

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

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 10h and 3min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

[Resources]

Average sunshine days in September
Winterwarm, CA

Average sunshine days in September - Winterwarm, CA
  • Average sunshine days in September: 22.5 days

The month with the most sunshine days is June (25.8 days).
The month with the least sunshine days is February (20 days).

[Resources]

Average UV index in September
Winterwarm, CA

Average UV index in September - Winterwarm, CA
  • Average UV index in September: 6

The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).

[Resources]

Average cloud cover in September
Winterwarm, CA

Average cloud cover in September - Winterwarm, CA
  • Average cloud cover in September: 10

The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 6).

[Resources]

Average visibility in September
Winterwarm, CA

Average visibility in September - Winterwarm, 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]

Winterwarm, California, USA

Weather forecast for your location

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