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
September's arrival signals a moderate reduction in the average high-temperature, easing from a sweltering 95.7°F (35.4°C) in August to a tropical 90°F (32.2°C). Despite considerable daily temperature swings, a steady low-temperature average of 61.2°F (16.2°C) is noted in Edison throughout September.Humidity
The average relative humidity in September is 33%.Rainfall
In Edison, California, during September, the rain falls for 1.6 days and regularly aggregates up to 0.08" (2mm) of precipitation. Throughout the year, there are 52 rainfall days, and 7.17" (182mm) of precipitation is accumulated.Snowfall
January, March through December are months without snowfall.Daylight
In Edison, California, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:21 pm. On the last day of September, in Edison, sunrise is at 6:50 am and sunset at 6:40 pm PDT.
Sunshine
In Edison, the average sunshine in September is 11.1h.UV index
In Edison, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 6 in September translates into these instructions:
Fend off overexposure. Sun protection is vital. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
How hot does it get in Edison in September?
What is the average humidity in September in Edison?
How much does it rain in Edison in September?
When it does not snow in Edison?
How many hours of daylight does Edison have in September?
When is the sunrise / sunset in September in Edison?
How many hours of sunshine does Edison have in September?
What is the UV index intensity in September in Edison?
Average temperature in September
Edison, CA
- Average high temperature in September: 90°F
The warmest month (with the highest average high temperature) is July (96.6°F).
The month with the lowest average high temperature is December (58.1°F).
- Average low temperature in September: 61.2°F
The months with the highest average low temperature are July and August (64.9°F).
The coldest month (with the lowest average low temperature) is December (40.8°F).
Average pressure in September
Edison, CA
- Average pressure in September: 29.9"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Edison, CA
- Average wind speed in September: 4.3mph
The windiest months (with the highest average wind speed) are May, June and July (5mph).
The calmest month (with the lowest average wind speed) is November (3.9mph).
Average humidity in September
Edison, CA
- Average humidity in September: 33%
The months with the highest relative humidity are February and December (59%).
The month with the lowest relative humidity is August (29%).
Average rainfall in September
Edison, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is December (1.26").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in September
Edison, CA
- Average rainfall days in September: 1.6 days
The month with the highest number of rainy days is March (9.4 days).
The month with the least rainy days is August (0.8 days).
Average snowfall in September
Edison, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Edison, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 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
Edison, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The months with the least sunshine are January and December (Average sunshine: 6h and 42min).
Average sunshine days in September
Edison, CA
- Average sunshine days in September: 27.6 days
The month with the most sunshine days is August (29.1 days).
The month with the least sunshine days is February (20.2 days).
Average UV index in September
Edison, CA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in September
Edison, CA
- Average cloud cover in September: 4
The month with the most cloud cover is March (Cloud cover 25).
The months with the least cloud cover are August and September (Cloud cover 4).
Average visibility in September
Edison, 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).
Edison, California, USA
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