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 initiation of September sees an average high-temperature of a warm 85.6°F (29.8°C), showing minor variations from the previous month. A significant temperature decrease to an average an enjoyable 63.5°F (17.5°C) characterizes Palm Grove's nighttime temperatures during September.Heat index
The heat index value during September is calculated to be a tropical 86°F (30°C). Constant activity during exposure could result in a state of weariness and possibly heat cramps.Metrics for the heat index primarily focus on shaded spots and light wind conditions. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Humidity
In Palm Grove, the average relative humidity in September is 45%.Rainfall
In Palm Grove, California, during September, the rain falls for 5 days and regularly aggregates up to 0.59" (15mm) of precipitation. Throughout the year, there are 64.8 rainfall days, and 8.7" (221mm) of precipitation is accumulated.Snowfall
January, April through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 6:20 am and sunset at 7:09 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 6:30 pm PDT.
Sunshine
The average sunshine in September in Palm Grove is 10.4h.UV index
In Palm Grove, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 6 in September translates into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
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?
What is the average length of the day in September?
What time are sunrise and sunset in September in Palm Grove?
How many hours of sunshine does Palm Grove have in September?
How high is the UV index in September?
Average temperature in September
Palm Grove, CA
- Average high temperature in September: 85.6°F
The warmest month (with the highest average high temperature) is August (90.3°F).
The month with the lowest average high temperature is December (59°F).
- Average low temperature in September: 63.5°F
The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is December (42.3°F).
Average pressure in September
Palm Grove, CA
- Average pressure in September: 29.85"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Palm Grove, CA
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are April and May (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Palm Grove, CA
- Average humidity in September: 45%
The months with the highest relative humidity are March and May (54%).
The month with the lowest relative humidity is August (43%).
Average rainfall in September
Palm Grove, CA
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is February (1.5").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Palm Grove, CA
- Average rainfall days in September: 5 days
The month with the highest number of rainy days is July (7.9 days).
The month with the least rainy days is June (1.5 days).
Average snowfall in September
Palm Grove, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Palm Grove, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are January, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Palm Grove, 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 18min).
Average sunshine days in September
Palm Grove, CA
- Average sunshine days in September: 23.1 days
The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is July (19 days).
Average UV index in September
Palm Grove, 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 November and December (UV index 3).
Average cloud cover in September
Palm Grove, CA
- Average cloud cover in September: 9
The month with the most cloud cover is December (Cloud cover 26).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility in September
Palm Grove, 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).
Palm Grove, California, USA
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