September weather forecastPlacerville, CA
September
Weather in September
September, the first month of the autumn in Placerville, is also a moderately hot month, with an average temperature varying between 54.5°F (12.5°C) and 82.4°F (28°C).Temperature
A mild drop in Placerville's average high-temperature is observed in September, transitioning from a tropical 88.3°F (31.3°C) in August to a warm 82.4°F (28°C). Placerville documents a striking divergence from daytime highs, with an average nighttime temperature of 54.5°F (12.5°C) in September.Heat index
Throughout September, the heat index is evaluated at 82.4°F (28°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.In reference to the heat index, it's for places in shade and with a slight wind. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', gauges the sensation of temperature factoring in the air's moisture content. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Humidity
The average relative humidity in September is 42%.Rainfall
In Placerville, in September, it is raining for 2.6 days, with typically 0.28" (7mm) of accumulated precipitation. In Placerville, during the entire year, the rain falls for 86.4 days and collects up to 29.69" (754mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September in Placerville is 12h and 25min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:32 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:46 pm PDT.
Sunshine
In September, the average sunshine is 11.3h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 5 during September translates into these guidelines:
Put precautions into practice - Guidance to elude sunburn is provided. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Placerville, CA
- Average high temperature in September: 82.4°F
The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is December (50.7°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is December (36°F).
Average pressure in September
Placerville, 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 (29.9"Hg).
Average wind speed in September
Placerville, CA
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is February (6mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Placerville, CA
- Average humidity in September: 42%
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is July (39%).
Average rainfall in September
Placerville, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is March (5.98").
The driest month (with the least rainfall) is July (0").
Average rainfall days in September
Placerville, CA
- Average rainfall days in September: 2.6 days
The month with the highest number of rainy days is March (15.6 days).
The month with the least rainy days is July (0.9 days).
Average snowfall in September
Placerville, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.16").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Placerville, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Placerville, 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 18min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in September
Placerville, CA
- Average sunshine days in September: 26.9 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (13.8 days).
Average UV index in September
Placerville, CA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is November (UV index 2).
Average cloud cover in September
Placerville, CA
- Average cloud cover in September: 8
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Placerville, 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).
