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 arrival of September suggests a slight decrease in the average high-temperature, moving from a tropical 90.9°F (32.7°C) in August to a warm 85.3°F (29.6°C). Despite substantial daily fluctuations, the average low-temperature is a comfortable 61.9°F (16.6°C) during September.Humidity
The average relative humidity in September in Wrightwood is 38%.Rainfall
In Wrightwood, California, during September, the rain falls for 2.4 days and regularly aggregates up to 0.16" (4mm) of precipitation. In Wrightwood, during the entire year, the rain falls for 47.1 days and collects up to 7.91" (201mm) of precipitation.Snowfall
In Wrightwood, snow does not fall in June through October.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:24 am and sunset at 7:16 pm. On the last day of September, sunrise is at 6:44 am and sunset at 6:35 pm PDT.
Sunshine
In Wrightwood, the average sunshine in September is 10.8h.UV index
The average daily maximum UV index in September in Wrightwood is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: The UV index of 5 during September leads to these advisories:
Undertake precautions - Guarding against sun damage is counselled. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is 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 are sunrise and sunset in September?
How long on average sun shines in September in Wrightwood?
What is the UV index reading in September?
Average temperature in September
Wrightwood, CA
- Average high temperature in September: 85.3°F
The warmest month (with the highest average high temperature) is August (90.9°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is August (65.3°F).
The coldest month (with the lowest average low temperature) is December (39°F).
Average pressure in September
Wrightwood, CA
- Average pressure in September: 29.88"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Wrightwood, CA
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are April and May (7.6mph).
The calmest month (with the lowest average wind speed) is September (5.5mph).
Average humidity in September
Wrightwood, CA
- Average humidity in September: 38%
The months with the highest relative humidity are February and December (53%).
The month with the lowest relative humidity is August (35%).
Average rainfall in September
Wrightwood, CA
- Average rainfall in September: 0.16"
The wettest months (with the highest rainfall) are February and December (1.65").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Wrightwood, CA
- Average rainfall days in September: 2.4 days
The month with the highest number of rainy days is March (7.5 days).
The month with the least rainy days is June (0.8 days).
Average snowfall in September
Wrightwood, CA
- Average snowfall in September: 0"
The month with the highest snowfall is December (5.79").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Wrightwood, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3 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
Wrightwood, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- 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 December (Average sunshine: 6h and 54min).
Average sunshine days in September
Wrightwood, CA
- Average sunshine days in September: 26.5 days
The month with the most sunshine days is June (28.8 days).
The month with the least sunshine days is February (20.8 days).
Average UV index in September
Wrightwood, CA
- Average UV index in September: 5
The months with the highest UV index are 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
Wrightwood, CA
- Average cloud cover in September: 6
The month with the most cloud cover is December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Wrightwood, 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).
Wrightwood, California, USA
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