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 subtly correlates with a reduction in the average high-temperature, down from 92.3°F (33.5°C) in August to a still tropical 86.7°F (30.4°C). In Lamont, the nighttime temperature registers a significant drop from daytime peaks to an average of 58.5°F (14.7°C) in September.Humidity
In September, the average relative humidity is 33%.Rainfall
In Lamont, in September, it is raining for 1.9 days, with typically 0.12" (3mm) of accumulated precipitation. Throughout the year, there are 54.3 rainfall days, and 6.22" (158mm) of precipitation is accumulated.Snowfall
In Lamont, snow does not fall in January, March through December.Daylight
In Lamont, 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 7:22 pm. On the last day of September, sunrise is at 6:50 am and sunset at 6:40 pm PDT.
Sunshine
In September, the average sunshine is 11.1h.UV index
In Lamont, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
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?
How many hours of daylight does Lamont have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Lamont have in September?
What is the UV index reading in September?
Average temperature in September
Lamont, CA
- Average high temperature in September: 86.7°F
The warmest month (with the highest average high temperature) is July (93.2°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is December (38.3°F).
Average pressure in September
Lamont, CA
- Average pressure in September: 29.9"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Lamont, CA
- Average wind speed in September: 4.1mph
The windiest month (with the highest average wind speed) is June (5.5mph).
The calmest month (with the lowest average wind speed) is September (4.1mph).
Average humidity in September
Lamont, CA
- Average humidity in September: 33%
The months with the highest relative humidity are February and December (58%).
The month with the lowest relative humidity is August (29%).
Average rainfall in September
Lamont, CA
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is December (1.22").
The driest months (with the least rainfall) are June and August (0.08").
Average rainfall days in September
Lamont, CA
- Average rainfall days in September: 1.9 days
The month with the highest number of rainy days is March (8.5 days).
The month with the least rainy days is June (1.4 days).
Average snowfall in September
Lamont, 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
Lamont, 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, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Lamont, 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 54min).
Average sunshine days in September
Lamont, CA
- Average sunshine days in September: 26.3 days
The month with the most sunshine days is August (27.9 days).
The month with the least sunshine days is February (20.5 days).
Average UV index in September
Lamont, CA
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Lamont, CA
- Average cloud cover in September: 5
The month with the most cloud cover is March (Cloud cover 23).
The months with the least cloud cover are June, July, August and September (Cloud cover 5).
Average visibility in September
Lamont, 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).
Lamont, California, USA
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