September weather forecastTrinity Center, CA
September
Weather in September
September, the first month of the autumn in Trinity Center, is still a warm month, with temperature in the range of an average high of 83.1°F (28.4°C) and an average low of 53.6°F (12°C).Temperature
September's arrival subtly correlates with a reduction in the average high-temperature, down from a hot 90.3°F (32.4°C) in August to a warm 83.1°F (28.4°C). In September, the nighttime temperature plummets remarkably from the daily apex to a steady average of 53.6°F (12°C).Heat index
During September, the heat index is evaluated at 82.4°F (28°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.It is crucial to understand that heat index figures are for shade and gentle wind conditions. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Humidity
In September, the average relative humidity in Trinity Center is 41%.Rainfall
In Trinity Center, in September, during 4 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. In Trinity Center, during the entire year, the rain falls for 103.6 days and collects up to 25.28" (642mm) of precipitation.Snowfall
In Trinity Center, snow does not fall in April through October.Daylight
In September, the average length of the day in Trinity Center is 12h and 27min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:42 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:53 pm PDT.
Sunshine
The average sunshine in September is 11h.UV index
In Trinity Center, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Trinity Center, CA
- Average high temperature in September: 83.1°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is December (48°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is December (34°F).
Average pressure in September
Trinity Center, CA
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in September
Trinity Center, CA
- Average wind speed in September: 4.9mph
The windiest months (with the highest average wind speed) are March and October (5.3mph).
The calmest months (with the lowest average wind speed) are August and November (4.5mph).
Average humidity in September
Trinity Center, CA
- Average humidity in September: 41%
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is August (37%).
Average rainfall in September
Trinity Center, CA
- Average rainfall in September: 0.39"
The wettest month (with the highest rainfall) is March (4.8").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in September
Trinity Center, CA
- Average rainfall days in September: 4 days
The month with the highest number of rainy days is March (16.8 days).
The month with the least rainy days is August (1.7 days).
Average snowfall in September
Trinity Center, CA
- Average snowfall in September: 0"
The month with the highest snowfall is November (1.3").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Trinity Center, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Trinity Center, CA
- Average daylight in September: 12h and 24min
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: 11h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Trinity Center, CA
- Average sunshine days in September: 24.7 days
The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is March (12.1 days).
Average UV index in September
Trinity Center, CA
- Average UV index in September: 4
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
Trinity Center, CA
- Average cloud cover in September: 10
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Trinity Center, CA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is December (5mi).
