September weather forecastPhelps Corner, CA
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Phelps Corner, California, with an average temperature varying between 82.6°F (28.1°C) and 64°F (17.8°C).Temperature
In September, Phelps Corner's weather conditions record an average high-temperature of a still moderately hot 82.6°F (28.1°C), demonstrating little divergence from the preceding month. Phelps Corner, in September, observes a steady average low-temperature of 64°F (17.8°C).Heat index
For most parts of September, the heat index is evaluated at 84.2°F (29°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values hold particular significance for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humidity
The average relative humidity in September in Phelps Corner is 57%.Rainfall
In September, in Phelps Corner, the rain falls for 4.6 days. Throughout September, 0.39" (10mm) of precipitation is accumulated. In Phelps Corner, during the entire year, the rain falls for 60.6 days and collects up to 8.66" (220mm) of precipitation.Daylight
In Phelps Corner, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:22 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:32 pm PDT.
Sunshine
In September, the average sunshine is 10.4h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 6 during September translates into the following directions:
Shield from overexposure. Defense against sun-related harm is required. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Phelps Corner, CA
- Average high temperature in September: 82.6°F
The warmest month (with the highest average high temperature) is August (84.2°F).
The month with the lowest average high temperature is December (63°F).
- Average low temperature in September: 64°F
The month with the highest average low temperature is August (66.2°F).
The coldest months (with the lowest average low temperature) are February and December (47.3°F).
Average pressure in September
Phelps Corner, CA
- Average pressure in September: 29.87"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The months with the lowest atmospheric pressure are June and September (29.87"Hg).
Average wind speed in September
Phelps Corner, CA
- Average wind speed in September: 4.3mph
The windiest months (with the highest average wind speed) are April and May (5.5mph).
The calmest months (with the lowest average wind speed) are September and October (4.3mph).
Average humidity in September
Phelps Corner, CA
- Average humidity in September: 57%
The month with the highest relative humidity is May (65%).
The month with the lowest relative humidity is November (52%).
Average rainfall in September
Phelps Corner, CA
- Average rainfall in September: 0.39"
The wettest month (with the highest rainfall) is February (1.81").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Phelps Corner, CA
- Average rainfall days in September: 4.6 days
The month with the highest number of rainy days is March (7.7 days).
The month with the least rainy days is June (1.3 days).
Average daylight in September /
Average sunshine in September
Phelps Corner, CA
- Average daylight in September: 12h and 24min
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 24min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in September
Phelps Corner, CA
- Average sunshine days in September: 22.5 days
The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is July (20.3 days).
Average UV index in September
Phelps Corner, CA
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Phelps Corner, CA
- Average cloud cover in September: 9
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in September
Phelps Corner, 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).
