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 brings a slight decrease in temperature, down from a moderately hot 83.3°F (28.5°C) in August to a still warm 76.8°F (24.9°C). Nightly readings in September display a noticeable downturn from daily highs in Mettah, with the average low-temperature registering a frosty 43.7°F (6.5°C).Humidity
The average relative humidity in September in Mettah is 63%.Rainfall
In Mettah, in September, it is raining for 4.5 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, in Mettah, California, there are 127.2 rainfall days, and 39.02" (991mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall in Mettah.Daylight
In Mettah, the average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:42 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:58 pm PDT.
Sunshine
In September, the average sunshine is 10.3h.UV index
In Mettah, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 suggests this advice:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
What are the temperatures in Mettah in September?
What is the average humidity in September in Mettah?
How much does it rain in Mettah in September?
When it does not snow in Mettah?
What is the average length of the day in September in Mettah?
When is the sunrise / sunset in September in Mettah?
How many hours of sunshine does Mettah have in September?
How high is the UV index in September in Mettah?
Average temperature in September
Mettah, CA
- Average high temperature in September: 76.8°F
The warmest month (with the highest average high temperature) is August (83.3°F).
The month with the lowest average high temperature is December (47.1°F).
- Average low temperature in September: 43.7°F
The month with the highest average low temperature is July (47.5°F).
The coldest month (with the lowest average low temperature) is December (30.7°F).
Average pressure in September
Mettah, CA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in September
Mettah, CA
- Average wind speed in September: 3.8mph
The windiest month (with the highest average wind speed) is March (5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in September
Mettah, CA
- Average humidity in September: 63%
The month with the highest relative humidity is March (84%).
The month with the lowest relative humidity is August (61%).
Average rainfall in September
Mettah, CA
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is January (7.17").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in September
Mettah, CA
- Average rainfall days in September: 4.5 days
The month with the highest number of rainy days is March (19.3 days).
The months with the least rainy days are July and August (2.3 days).
Average snowfall in September
Mettah, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Mettah, 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
Mettah, CA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Mettah, CA
- Average sunshine days in September: 24.5 days
The month with the most sunshine days is July (27.6 days).
The month with the least sunshine days is March (10.3 days).
Average UV index in September
Mettah, CA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover in September
Mettah, CA
- Average cloud cover in September: 20
The month with the most cloud cover is March (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in September
Mettah, CA
- Average visibility in September: 6mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are March, April and December (4mi).
Mettah, California, USA
Weather forecast for your location
2. Allow the app to use your location
