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 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 indicates a minor shift in the average high-temperature, from August's fiery hot 98.2°F (36.8°C) to a hot 92.1°F (33.4°C). Despite a significant deviation from daily highs, September sees an average nighttime temperature of 62.6°F (17°C).Humidity
In September, the average relative humidity is 34%.Rainfall
In September, the rain falls for 1.5 days. Throughout September, 0.08" (2mm) of precipitation is accumulated. Throughout the year, there are 51 rainfall days, and 7.56" (192mm) of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 24min.On the first day of September, sunrise is at 6:32 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:45 pm PDT.
Sunshine
In September, the average sunshine is 11.4h.UV index
The average daily maximum UV index in September is 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 ordinary person.Note: A daily high UV index of 6 in September leads to these guidelines:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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 much does it rain in Le Grand in September?
What is the average length of the day in September in Le Grand?
What time are sunrise and sunset in September?
How many hours of sunshine does Le Grand have in September?
What is the UV index reading in September?
Average temperature in September
Le Grand, CA
- Average high temperature in September: 92.1°F
The warmest month (with the highest average high temperature) is July (100°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in September: 62.6°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).
Average pressure in September
Le Grand, CA
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Le Grand, CA
- Average wind speed in September: 5.9mph
The windiest month (with the highest average wind speed) is June (7.9mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in September
Le Grand, CA
- Average humidity in September: 34%
The month with the highest relative humidity is January (68%).
The month with the lowest relative humidity is July (31%).
Average rainfall in September
Le Grand, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is March (1.46").
The driest month (with the least rainfall) is August (0.04").
Average rainfall days in September
Le Grand, CA
- Average rainfall days in September: 1.5 days
The month with the highest number of rainy days is March (8.6 days).
The month with the least rainy days is June (0.8 days).
Average daylight in September /
Average sunshine in September
Le Grand, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 11h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in September
Le Grand, CA
- Average sunshine days in September: 27.2 days
The month with the most sunshine days is June (28.8 days).
The month with the least sunshine days is February (21.5 days).
Average UV index in September
Le Grand, 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, February, November and December (UV index 3).
Average cloud cover in September
Le Grand, CA
- Average cloud cover in September: 5
The months with the most cloud cover are March and December (Cloud cover 30).
The months with the least cloud cover are July, August and September (Cloud cover 5).
Average visibility in September
Le Grand, 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).
Le Grand, California, USA
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