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 shift from August to September includes a small decrease in the average high-temperature, from a tropical 86.5°F (30.3°C) to a warm 81°F (27.2°C). Ahwahnee sees a large disparity in day to night temperatures in September, with the night temperature dropping to an average of 54.7°F (12.6°C).Humidity
In Ahwahnee, the average relative humidity in September is 35%.Rainfall
In September, the rain falls for 3 days. Throughout September, 0.28" (7mm) of precipitation is accumulated. Throughout the year, in Ahwahnee, there are 73.5 rainfall days, and 19.69" (500mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day in Ahwahnee is 12h and 25min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:27 pm. On the last day of September, in Ahwahnee, California, sunrise is at 6:54 am and sunset at 6:43 pm PDT.
Sunshine
In September, the average sunshine in Ahwahnee is 11.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: An average UV index of 5 in September transforms into this advice:
Ensure safety - Sun damage prevention is strongly urged. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Ahwahnee?
What is the average humidity in September in Ahwahnee?
How many days does it rain in September in Ahwahnee?
When it does not snow in Ahwahnee?
What is the average length of the day in September in Ahwahnee?
When are sunrise and sunset in September in Ahwahnee?
How many hours of sunshine does Ahwahnee have in September?
How high is the UV index in September in Ahwahnee?
Average temperature in September
Ahwahnee, CA
- Average high temperature in September: 81°F
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is December (48.9°F).
- Average low temperature in September: 54.7°F
The month with the highest average low temperature is July (58.8°F).
The coldest months (with the lowest average low temperature) are February and December (32.9°F).
Average pressure in September
Ahwahnee, 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 (29.9"Hg).
Average wind speed in September
Ahwahnee, CA
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest months (with the lowest average wind speed) are November and December (4.3mph).
Average humidity in September
Ahwahnee, CA
- Average humidity in September: 35%
The month with the highest relative humidity is March (69%).
The months with the lowest relative humidity are July and August (32%).
Average rainfall in September
Ahwahnee, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is February (3.54").
The driest month (with the least rainfall) is August (0.12").
Average rainfall days in September
Ahwahnee, CA
- Average rainfall days in September: 3 days
The month with the highest number of rainy days is March (11.3 days).
The month with the least rainy days is August (2.1 days).
Average snowfall in September
Ahwahnee, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.55").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Ahwahnee, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.4 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
Ahwahnee, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 11h and 1min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).
Average sunshine days in September
Ahwahnee, CA
- Average sunshine days in September: 25.2 days
The months with the most sunshine days are August and October (26.5 days).
The month with the least sunshine days is March (18.3 days).
Average UV index in September
Ahwahnee, 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, November and December (UV index 2).
Average cloud cover in September
Ahwahnee, CA
- Average cloud cover in September: 7
The month with the most cloud cover is March (Cloud cover 31).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in September
Ahwahnee, 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).
Ahwahnee, California, USA
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