September weather forecastWest Sacramento, CA
September
Weather in September
The first month of the autumn, September, is still a tropical month in West Sacramento, California, with temperature in the range of an average high of 89.1°F (31.7°C) and an average low of 59.4°F (15.2°C).Temperature
With the transition into September, West Sacramento notes an average high-temperature of a still tropical 89.1°F (31.7°C), closely resembling August. West Sacramento's September nights represent a significant downturn from the day's heat, with an average temperature of 59.4°F (15.2°C).Heat index
The heat index for September is estimated at a hot 91.4°F (33°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
The least humid month in West Sacramento is September, with an average relative humidity of 45%.Rainfall
In September, the rain falls for 1.9 days. Throughout September, 0.12" (3mm) of precipitation is accumulated. In West Sacramento, during the entire year, the rain falls for 66.6 days and collects up to 7.6" (193mm) of precipitation.Daylight
In September, the average length of the day in West Sacramento is 12h and 25min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:35 pm. On the last day of September, in West Sacramento, sunrise is at 7:01 am and sunset at 6:49 pm PDT.
Sunshine
The average sunshine in September in West Sacramento is 11.2h.UV index
The average daily maximum UV index in September in West Sacramento, California, is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 5 in September translates into this advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
West Sacramento, CA
- Average high temperature in September: 89.1°F
The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in September: 59.4°F
The month with the highest average low temperature is August (59.5°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).
Average pressure in September
West Sacramento, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
West Sacramento, CA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is February (6.3mph).
The calmest months (with the lowest average wind speed) are September and November (5mph).
Average humidity in September
West Sacramento, CA
- Average humidity in September: 45%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (45%).
Average rainfall in September
West Sacramento, CA
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is March (1.34").
The driest month (with the least rainfall) is August (0.04").
Average rainfall days in September
West Sacramento, CA
- Average rainfall days in September: 1.9 days
The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is August (1.2 days).
Average daylight in September /
Average sunshine in September
West Sacramento, CA
- Average daylight in September: 12h and 24min
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 12min
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 30min).
Average sunshine days in September
West Sacramento, CA
- Average sunshine days in September: 27.8 days
The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is March (17.7 days).
Average UV index in September
West Sacramento, 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
West Sacramento, CA
- Average cloud cover in September: 9
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in September
West Sacramento, 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).
