September weather forecast and climate
Capay, CA

Weather in September

The first month of the autumn, September, is still a tropical month in Capay, California, with average temperature ranging between min 59°F (15°C) and max 88.7°F (31.5°C).

Temperature

In September, the average high-temperature is almost the same as in August - a still hot 88.7°F (31.5°C). The average low-temperature, in Capay, California, is 59°F (15°C).

Heat index

In September, the average heat index is appraised at a hot 89.8°F (32.1°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'felt air temperature', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, clothing, pregnancy). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The least humid month in Capay, California, is September, with an average relative humidity of 43%.

Rainfall

In Capay, during 1.8 rainfall days, 0.08" (2mm) of precipitation is typically accumulated. Throughout the year, there are 70.7 rainfall days, and 12.52" (318mm) of precipitation is accumulated.

Snowfall

January through November are months without snowfall.

Daylight

In Capay, the average length of the day is 12.4h.

Sunshine

In Capay, the average sunshine in September is 11.2h.

UV index

The average daily maximum UV index in Capay is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
[Resources]

FAQ

What is the temperature in September in Capay?

The average high-temperature, in September, is 88.7°F (31.5°C), while the average low-temperature is 59°F (15°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), that calculates temperature value influenced by the moisture in the air, is evaluated at 89.8°F (32.1°C).

What is the least humid month in Capay?

The least humid month is September, with an average relative humidity of 43%.

What is the average humidity in September in Capay?

In September, the average relative humidity in Capay, California, is 43%.

How much does it rain in Capay in September?

In September, in Capay, California, the rain falls for 1.8 days. Throughout September, 0.08" (2mm) of precipitation is accumulated.

When it does not snow in Capay?

In Capay snow does not fall in January through November.

How many hours of daylight does Capay have in September?

In Capay, California, the average length of the day in September is 12.4h.

How many hours of sunshine does Capay have in September?

In September, the average sunshine in Capay is 11.2h.

What is the UV index intensity in September in Capay?

The average daily maximum UV index in September in Capay is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to the UV radiation.

Average temperature in September
Capay, CA

Average temperature in September - Capay, CA
  • Average high temperature in September: 88.7°F

The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is December (54.3°F).

  • Average low temperature in September: 59°F

Months with the highest average low temperature are July and August (59.2°F).
The coldest months (with the lowest average low temperature) are January and December (41.5°F).

[Resources]

Average pressure in September
Capay, CA

Average pressure in September - Capay, CA
  • Average pressure in September: 29.91"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.9").

[Resources]

Average wind speed in September
Capay, CA

Average wind speed in September - Capay, CA
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is February (6.3mph).
The calmest month (with the lowest average wind speed) is September (5mph).

[Resources]

Average humidity in September
Capay, CA

Average humidity in September - Capay, CA
  • Average humidity in September: 43%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (43%).

[Resources]

Average rainfall in September
Capay, CA

Average rainfall in September - Capay, CA
  • Average rainfall in September: 0.08"

The wettest month (with the highest rainfall) is February (2.52").
The driest months (with the least rainfall) are July and August (0.04").

[Resources]

Average rainfall days in September
Capay, CA

Average rainfall days in September - Capay, CA
  • Average rainfall days in September: 1.8 days

The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is July (0.8 days).

[Resources]

Average snowfall days in September
Capay, CA

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

The month with the highest number of snowfall days is December (0.1 days).
Months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

[Resources]

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

Average daylight in September / Average sunshine in September - Capay, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 11.2h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.7h).

[Resources]

Average sunshine days in September
Capay, CA

Average sunshine days in September - Capay, CA
  • Average sunshine days in September: 28 days

Months with the most sunshine days are July and August (29.3 days).
The month with the least sunshine days is March (16.8 days).

[Resources]

Average UV index in September
Capay, CA

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

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

[Resources]

Average cloud cover in September
Capay, CA

Average cloud cover in September - Capay, CA
  • Average cloud cover in September: 8

The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 4).

[Resources]

Average visibility in September
Capay, CA

Average visibility in September - Capay, CA
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

[Resources]