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 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
The average high-temperature in September, at a moderately hot 85.1°F (29.5°C), reveals a modest deviation from August's 89.2°F (31.8°C). Nightly average temperatures in September reveal a significant dip from daytime highs, registering a consistent a comfortable 62.6°F (17°C).Heat index
September's heat index is estimated at a hot 86°F (30°C). Constant activity during exposure could result in a state of weariness and possibly heat cramps.Always consider that heat index estimations are for light winds and places in the shade. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
In September, the average relative humidity is 46%.Rainfall
In Pine Valley, during September, the rain falls for 5.6 days and regularly aggregates up to 0.71" (18mm) of precipitation. Throughout the year, there are 67.3 rainfall days, and 9.57" (243mm) of precipitation is accumulated.Snowfall
In Pine Valley, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:10 pm. On the last day of September, sunrise is at 6:40 am and sunset at 6:31 pm PDT.
Sunshine
In September, the average sunshine is 10.3h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high UV index of 6 in September translates into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Pine Valley have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Pine Valley have in September?
What is the UV index intensity in September in Pine Valley?
Average temperature in September
Pine Valley, CA
- Average high temperature in September: 85.1°F
The warmest month (with the highest average high temperature) is August (89.2°F).
The month with the lowest average high temperature is December (58.1°F).
- Average low temperature in September: 62.6°F
The month with the highest average low temperature is August (66.4°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).
Average pressure in September
Pine Valley, CA
- Average pressure in September: 29.85"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The months with the lowest atmospheric pressure are June and September (29.85"Hg).
Average wind speed in September
Pine Valley, CA
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are April and May (7.2mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Pine Valley, CA
- Average humidity in September: 46%
The months with the highest relative humidity are March and May (55%).
The month with the lowest relative humidity is August (43%).
Average rainfall in September
Pine Valley, CA
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is February (1.69").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Pine Valley, CA
- Average rainfall days in September: 5.6 days
The month with the highest number of rainy days is July (8.6 days).
The month with the least rainy days is June (1.8 days).
Average snowfall in September
Pine Valley, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.83").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Pine Valley, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 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
Pine Valley, 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 2min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in September
Pine Valley, CA
- Average sunshine days in September: 22.7 days
The month with the most sunshine days is June (27.7 days).
The month with the least sunshine days is July (18.8 days).
Average UV index in September
Pine Valley, CA
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Pine Valley, CA
- Average cloud cover in September: 9
The month with the most cloud cover is December (Cloud cover 28).
The months with the least cloud cover are June and August (Cloud cover 7).
Average visibility in September
Pine Valley, 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).
Pine Valley, California, USA
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