September weather forecastRed Mountain, CA
September
Weather in September
The first month of the autumn, September, is still a tropical month in Red Mountain, California, with an average temperature varying between 86.9°F (30.5°C) and 66.2°F (19°C).Temperature
September ushers in a minute temperature change, with average high-temperatures reducing from August's 94.5°F (34.7°C) to a still hot 86.9°F (30.5°C). During September, an average low-temperature of 66.2°F (19°C) is observed.Humidity
In Red Mountain, the average relative humidity in September is 22%.Rainfall
In Red Mountain, during September, the rain falls for 1.9 days and regularly aggregates up to 0.12" (3mm) of precipitation. Throughout the year, in Red Mountain, there are 29.6 rainfall days, and 2.64" (67mm) of precipitation is accumulated.Snowfall
In Red Mountain, snow does not fall in January through October and December.Daylight
In Red Mountain, the average length of the day in September is 12h and 23min.On the first day of September in Red Mountain, sunrise is at 6:23 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:35 pm PDT.
Sunshine
In Red Mountain, the average sunshine in September is 10.8h.UV index
In Red Mountain, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 6 during September leads to these instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Red Mountain, CA
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (95.9°F).
The month with the lowest average high temperature is December (52.5°F).
- Average low temperature in September: 66.2°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is December (37.6°F).
Average pressure in September
Red Mountain, CA
- Average pressure in September: 29.87"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in September
Red Mountain, CA
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is May (9.3mph).
The calmest month (with the lowest average wind speed) is January (5.7mph).
Average humidity in September
Red Mountain, CA
- Average humidity in September: 22%
The month with the highest relative humidity is January (47%).
The month with the lowest relative humidity is August (20%).
Average rainfall in September
Red Mountain, CA
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is December (0.35").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Red Mountain, CA
- Average rainfall days in September: 1.9 days
The month with the highest number of rainy days is July (4.5 days).
The month with the least rainy days is June (1.2 days).
Average snowfall in September
Red Mountain, CA
- Average snowfall in September: 0"
The month with the highest snowfall is November (0.83").
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and December (0").
Average snowfall days in September
Red Mountain, CA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January, February, November and December (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Red Mountain, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 10h and 48min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The months with the least sunshine are January and December (Average sunshine: 7h and 6min).
Average sunshine days in September
Red Mountain, CA
- Average sunshine days in September: 25.4 days
The month with the most sunshine days is December (28.1 days).
The month with the least sunshine days is July (23.2 days).
Average UV index in September
Red Mountain, CA
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in September
Red Mountain, CA
- Average cloud cover in September: 4
The months with the most cloud cover are January, March and December (Cloud cover 17).
The month with the least cloud cover is September (Cloud cover 4).
Average visibility in September
Red Mountain, 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).
