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
Start of September brings a slight shift in the average high-temperature, dipping a bit from August's tropical 87.4°F (30.8°C) to a moderately hot 81.9°F (27.7°C). Long Barn anticipates a considerable drop in temperature at night in September, with an average low of 56.1°F (13.4°C).Humidity
The average relative humidity in September is 36%.Rainfall
In Long Barn, in September, it is raining for 2.9 days, with typically 0.24" (6mm) of accumulated precipitation. In Long Barn, during the entire year, the rain falls for 77.4 days and collects up to 29.06" (738mm) of precipitation.Snowfall
In Long Barn, snow does not fall in June through October.Daylight
The average length of the day in September in Long Barn is 12h and 25min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:29 pm. On the last day of September, in Long Barn, California, sunrise is at 6:56 am and sunset at 6:44 pm PDT.
Sunshine
In Long Barn, the average sunshine in September is 11.3h.UV index
In Long Barn, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Long Barn in September?
What is the average humidity in September in Long Barn?
How much does it rain in Long Barn in September?
When it does not snow in Long Barn?
How many hours of daylight does Long Barn have in September?
When are sunrise and sunset in September in Long Barn?
How long on average sun shines in September in Long Barn?
What is the UV index intensity in September in Long Barn?
Average temperature in September
Long Barn, CA
- Average high temperature in September: 81.9°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (50.4°F).
- Average low temperature in September: 56.1°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).
Average pressure in September
Long Barn, CA
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Long Barn, CA
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are February and March (5.8mph).
The calmest month (with the lowest average wind speed) is November (4.8mph).
Average humidity in September
Long Barn, CA
- Average humidity in September: 36%
The month with the highest relative humidity is March (70%).
The months with the lowest relative humidity are July and August (33%).
Average rainfall in September
Long Barn, CA
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is March (5.47").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Long Barn, CA
- Average rainfall days in September: 2.9 days
The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is August (1.6 days).
Average snowfall in September
Long Barn, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (12.87").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Long Barn, CA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are February and March (3.7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Long Barn, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 11h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Long Barn, CA
- Average sunshine days in September: 26.6 days
The month with the most sunshine days is August (28.3 days).
The month with the least sunshine days is March (15.6 days).
Average UV index in September
Long Barn, CA
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February and November (UV index 2).
Average cloud cover in September
Long Barn, CA
- Average cloud cover in September: 7
The month with the most cloud cover is March (Cloud cover 35).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in September
Long Barn, 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).
Long Barn, California, USA
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