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 is characterized by a slight reduction in average high-temperature, easing from a hot 91.9°F (33.3°C) in August to a moderately hot 85.8°F (29.9°C). In September, the temperature in Adelanto registers a significant dip to an average of 63.5°F (17.5°C) at night.Humidity
In September, the average relative humidity in Adelanto is 32%.Rainfall
In September, the rain falls for 2.7 days. Throughout September, 0.28" (7mm) of precipitation is accumulated. Throughout the year, there are 44.8 rainfall days, and 4.8" (122mm) of precipitation is accumulated.Snowfall
In Adelanto, snow does not fall in March, May through October.Daylight
In Adelanto, the average length of the day in September is 12h and 23min.On the first day of September in Adelanto, California, sunrise is at 6:23 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:34 pm PDT.
Sunshine
The average sunshine in September is 10.7h.UV index
In Adelanto, California, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, a daily UV index of 6 turns into the following recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Adelanto?
What is the average humidity in September in Adelanto?
How much does it rain in Adelanto in September?
When it does not snow in Adelanto?
What is the average length of the day in September in Adelanto?
What time are sunrise and sunset in September in Adelanto?
How long on average sun shines in September in Adelanto?
How high is the UV index in September in Adelanto?
Average temperature in September
Adelanto, CA
- Average high temperature in September: 85.8°F
The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is December (53.2°F).
- Average low temperature in September: 63.5°F
The month with the highest average low temperature is August (68.5°F).
The coldest month (with the lowest average low temperature) is December (38.3°F).
Average pressure in September
Adelanto, CA
- Average pressure in September: 29.87"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Adelanto, CA
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is May (10.3mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).
Average humidity in September
Adelanto, CA
- Average humidity in September: 32%
The month with the highest relative humidity is December (52%).
The month with the lowest relative humidity is August (27%).
Average rainfall in September
Adelanto, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is December (0.98").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Adelanto, CA
- Average rainfall days in September: 2.7 days
The month with the highest number of rainy days is March (6 days).
The month with the least rainy days is June (0.9 days).
Average snowfall in September
Adelanto, CA
- Average snowfall in September: 0"
The month with the highest snowfall is November (1.73").
The months with the least snowfall are March, May, June, July, August, September and October (0").
Average snowfall days in September
Adelanto, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Adelanto, 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 4min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 7h and 0min).
Average sunshine days in September
Adelanto, CA
- Average sunshine days in September: 25.9 days
The month with the most sunshine days is June (28.9 days).
The month with the least sunshine days is February (22.4 days).
Average UV index in September
Adelanto, 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
Adelanto, CA
- Average cloud cover in September: 6
The month with the most cloud cover is December (Cloud cover 21).
The months with the least cloud cover are June and August (Cloud cover 5).
Average visibility in September
Adelanto, 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).
Adelanto, California, USA
Weather forecast for your location
2. Allow the app to use your location