Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Capay experiences an average high-temperature of a still tropical 88.7°F (31.5°C) in September, subtly different from August's 93.2°F (34°C). A striking departure from daytime highs to an average low-temperature of 59°F (15°C) is witnessed in Capay during September.Heat index
During September, the heat index is appraised at a hot 89.6°F (32°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.Consider that heat index readings are for situations in the shade and light wind. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Humidity
With an average relative humidity of 43%, September is the least humid month in Capay.Rainfall
In September, the rain falls for 1.8 days. Throughout September, 0.08" (2mm) of precipitation is accumulated. In Capay, California, during the entire year, the rain falls for 70.7 days and collects up to 12.52" (318mm) of precipitation.Snowfall
January through November are months without snowfall in Capay.Daylight
In Capay, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:51 pm PDT.
Sunshine
The average sunshine in September is 11.2h.UV index
In Capay, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 5 during September translates into the following guidance:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Capay?
What is the least humid month in Capay?
What is the average humidity in September in Capay?
How much does it rain in Capay in September?
When it does not snow in Capay?
What is the average length of the day in September in Capay?
What time are sunrise and sunset in September in Capay?
How many hours of sunshine does Capay have in September?
What is the UV index reading in September in Capay?
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
The 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).
Average pressure in September
Capay, CA
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
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).
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%).
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").
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).
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).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Capay, 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 30min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Capay, CA
- Average sunshine days in September: 28 days
The 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).
Average UV index in September
Capay, CA
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
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).
Average visibility in September
Capay, 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).
Capay, California, USA
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