September weather forecastMount Laguna, CA
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Mount Laguna, California, with an average temperature varying between 62.6°F (17°C) and 85.1°F (29.5°C).Temperature
September's average high-temperature is a moderately hot 85.1°F (29.5°C), maintaining a close comparison with August's 89.2°F (31.8°C). The month of September sees a significant daily temperature drop, recording an average low-temperature of 62.6°F (17°C).Heat index
September's average heat index is calculated to be a hot 86°F (30°C). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
Humidity
In September, the average relative humidity in Mount Laguna is 46%.Rainfall
In Mount Laguna, in September, it is raining for 5.6 days, with typically 0.71" (18mm) of accumulated precipitation. In Mount Laguna, during the entire year, the rain falls for 67.3 days and collects up to 9.57" (243mm) of precipitation.Snowfall
In Mount Laguna, snow does not fall in April through October.Daylight
In September, the average length of the day in Mount Laguna is 12h and 22min.On the first day of September, sunrise is at 6:20 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:31 pm PDT.
Sunshine
In September, the average sunshine in Mount Laguna is 10.3h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mount Laguna, CA
- Average high temperature in September: 85.1°F
The warmest month (with the highest average high temperature) is August (89.2°F).
The month with the lowest average high temperature is December (58.1°F).
- Average low temperature in September: 62.6°F
The month with the highest average low temperature is August (66.4°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).
Average pressure in September
Mount Laguna, CA
- Average pressure in September: 29.85"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The months with the lowest atmospheric pressure are June and September (29.85"Hg).
Average wind speed in September
Mount Laguna, CA
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are April and May (7.2mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Mount Laguna, CA
- Average humidity in September: 46%
The months with the highest relative humidity are March and May (55%).
The month with the lowest relative humidity is August (43%).
Average rainfall in September
Mount Laguna, CA
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is February (1.69").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Mount Laguna, CA
- Average rainfall days in September: 5.6 days
The month with the highest number of rainy days is July (8.6 days).
The month with the least rainy days is June (1.8 days).
Average snowfall in September
Mount Laguna, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.83").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Mount Laguna, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 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
Mount Laguna, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 10h and 18min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in September
Mount Laguna, CA
- Average sunshine days in September: 22.7 days
The month with the most sunshine days is June (27.7 days).
The month with the least sunshine days is July (18.8 days).
Average UV index in September
Mount Laguna, CA
- Average UV index in September: 6
The months with the highest UV index are 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
Mount Laguna, CA
- Average cloud cover in September: 9
The month with the most cloud cover is December (Cloud cover 28).
The months with the least cloud cover are June and August (Cloud cover 7).
Average visibility in September
Mount Laguna, 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).
