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 corresponds with a minor reduction in the average high-temperature, down from August's tropical 91°F (32.8°C) to a warm 85.5°F (29.7°C). Baldy Mesa encounters a significant temperature differential, with an average low-temperature of 63°F (17.2°C) during September nights.Humidity
In September, the average relative humidity is 34%.Rainfall
In Baldy Mesa, during September, the rain falls for 3.3 days and regularly aggregates up to 0.28" (7mm) of precipitation. Throughout the year, there are 49.8 rainfall days, and 5.71" (145mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:15 pm. On the last day of September, sunrise is at 6:44 am and sunset at 6:34 pm PDT.
Sunshine
In September, the average sunshine is 10.7h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Exercise prevention - Precautions against solar damage are endorsed. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking 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?
How many hours of daylight does Baldy Mesa have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Baldy Mesa have in September?
What is the UV index intensity in September?
Average temperature in September
Baldy Mesa, CA
- Average high temperature in September: 85.5°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is December (54.1°F).
- Average low temperature in September: 63°F
The month with the highest average low temperature is August (67.5°F).
The coldest month (with the lowest average low temperature) is December (38.5°F).
Average pressure in September
Baldy Mesa, 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 (29.83"Hg).
Average wind speed in September
Baldy Mesa, CA
- Average wind speed in September: 6.5mph
The windiest months (with the highest average wind speed) are April and May (9.1mph).
The calmest month (with the lowest average wind speed) is January (6.2mph).
Average humidity in September
Baldy Mesa, CA
- Average humidity in September: 34%
The month with the highest relative humidity is December (52%).
The month with the lowest relative humidity is August (30%).
Average rainfall in September
Baldy Mesa, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is December (1.18").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Baldy Mesa, CA
- Average rainfall days in September: 3.3 days
The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (0.8 days).
Average snowfall in September
Baldy Mesa, CA
- Average snowfall in September: 0"
The month with the highest snowfall is November (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Baldy Mesa, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 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
Baldy Mesa, 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 month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in September
Baldy Mesa, CA
- Average sunshine days in September: 25.8 days
The month with the most sunshine days is June (28.8 days).
The month with the least sunshine days is February (21.6 days).
Average UV index in September
Baldy Mesa, CA
- Average UV index in September: 5
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
Baldy Mesa, 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, August and September (Cloud cover 6).
Average visibility in September
Baldy Mesa, 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).
Baldy Mesa, California, USA
Weather forecast for your location
2. Allow the app to use your location