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 shows a slight dip in September, from August's hot 94.8°F (34.9°C) to a still tropical 88.7°F (31.5°C). With a significant daily temperature differential, Boron's nighttime temperature in September falls to an average of 65.1°F (18.4°C).Humidity
In September, the average relative humidity is 28%.Rainfall
In September, the rain falls for 1.6 days. Throughout September, 0.12" (3mm) of precipitation is accumulated. Throughout the year, there are 39.4 rainfall days, and 3.86" (98mm) of precipitation is accumulated.Snowfall
In Boron, snow does not fall in February through October.Daylight
The average length of the day in September in Boron is 12h and 23min.On the first day of September, sunrise is at 6:23 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:35 pm PDT.
Sunshine
In September, the average sunshine is 10.8h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In September, an average UV index of 6 transforms into the following instructions:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. 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. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
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?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Boron, CA
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is July (95.9°F).
The month with the lowest average high temperature is December (55°F).
- Average low temperature in September: 65.1°F
The month with the highest average low temperature is August (70.3°F).
The coldest month (with the lowest average low temperature) is December (38.1°F).
Average pressure in September
Boron, CA
- Average pressure in September: 29.88"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Boron, CA
- Average wind speed in September: 8.6mph
The windiest month (with the highest average wind speed) is May (11.8mph).
The calmest month (with the lowest average wind speed) is January (6.5mph).
Average humidity in September
Boron, CA
- Average humidity in September: 28%
The month with the highest relative humidity is December (51%).
The month with the lowest relative humidity is August (24%).
Average rainfall in September
Boron, CA
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is December (0.83").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Boron, CA
- Average rainfall days in September: 1.6 days
The month with the highest number of rainy days is March (5.5 days).
The month with the least rainy days is June (0.9 days).
Average snowfall in September
Boron, CA
- Average snowfall in September: 0"
The month with the highest snowfall is November (0.71").
The months with the least snowfall are February, March, April, May, June, July, August, September and October (0").
Average snowfall days in September
Boron, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Boron, 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: 10h and 5min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 7h and 0min).
Average sunshine days in September
Boron, CA
- Average sunshine days in September: 26 days
The month with the most sunshine days is June (28.2 days).
The month with the least sunshine days is February (22.8 days).
Average UV index in September
Boron, CA
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Boron, CA
- Average cloud cover in September: 5
The months with the most cloud cover are March and December (Cloud cover 19).
The months with the least cloud cover are June, August and September (Cloud cover 5).
Average visibility in September
Boron, 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).
Boron, California, USA
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