September weather forecastApple Valley, CA
September weather for Apple Valley, California: September, the first month of the autumn in Apple Valley, is still a warm month, with an average temperature varying between 64.4°F (18°C) and 85.8°F (29.9°C). In Apple Valley, California, during September, the rain falls for 3 days and regularly aggregates up to 0.28" (7mm) of precipitation.
September
Weather in September
September, the first month of the autumn in Apple Valley, is still a warm month, with an average temperature varying between 64.4°F (18°C) and 85.8°F (29.9°C).Temperature
September ushers in a minor alteration in Apple Valley's climate, with the average high-temperature moving from August's hot 92.1°F (33.4°C) to a moderately hot 85.8°F (29.9°C). Throughout the month of September, the nighttime temperature in Apple Valley dips to an average of 64.4°F (18°C).Humidity
In Apple Valley, California, the average relative humidity in September is 30%.Rainfall
In Apple Valley, in September, during 3 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. Throughout the year, there are 46.2 rainfall days, and 4.65" (118mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Apple Valley.Daylight
The average length of the day in September in Apple Valley is 12h and 22min.On the first day of September, sunrise is at 6:22 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:33 pm PDT.
Sunshine
In September, the average sunshine in Apple Valley is 10.6h.UV index
In Apple Valley, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum UV index of 6 in September translates into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Apple Valley, CA
- Average high temperature in September: 85.8°F
The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is December (53.2°F).
- Average low temperature in September: 64.4°F
The month with the highest average low temperature is August (69.4°F).
The coldest month (with the lowest average low temperature) is December (38.3°F).
Average pressure in September
Apple Valley, CA
- Average pressure in September: 29.86"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in September
Apple Valley, CA
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is May (10.4mph).
The calmest month (with the lowest average wind speed) is January (6.2mph).
Average humidity in September
Apple Valley, CA
- Average humidity in September: 30%
The month with the highest relative humidity is December (51%).
The month with the lowest relative humidity is August (26%).
Average rainfall in September
Apple Valley, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is December (0.87").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Apple Valley, CA
- Average rainfall days in September: 3 days
The month with the highest number of rainy days is March (5.7 days).
The month with the least rainy days is June (0.8 days).
Average snowfall in September
Apple Valley, CA
- Average snowfall in September: 0"
The month with the highest snowfall is November (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Apple Valley, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 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
Apple Valley, CA
- Average daylight in September: 12h and 24min
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 36min
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 6min).
Average sunshine days in September
Apple Valley, CA
- Average sunshine days in September: 25.9 days
The month with the most sunshine days is June (29 days).
The month with the least sunshine days is February (22.2 days).
Average UV index in September
Apple Valley, 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
Apple Valley, CA
- Average cloud cover in September: 6
The month with the most cloud cover is December (Cloud cover 20).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in September
Apple Valley, 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).
