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
As September arrives, Twin Bridges's weather displays a minor decrease in high-temperatures, transitioning from August's agreeable 73.2°F (22.9°C) to a refreshing 67.3°F (19.6°C). September presents a pronounced divergence from daily peak temperatures, with the average low-temperature of 42.3°F (5.7°C).Humidity
In Twin Bridges, the average relative humidity in September is 45%.Rainfall
In Twin Bridges, during September, the rain falls for 4.3 days and regularly aggregates up to 0.39" (10mm) of precipitation. In Twin Bridges, during the entire year, the rain falls for 45.4 days and collects up to 26.06" (662mm) of precipitation.Snowfall
Months with snowfall in Twin Bridges are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 1 snowfall days, it receives 0.63" (16mm) of snow. In Twin Bridges, California, during the entire year, snow falls for 83.9 days and aggregates up to 153.46" (3898mm) of snow.Daylight
The average length of the day in September in Twin Bridges is 12h and 25min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:30 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:44 pm PDT.
Sunshine
The average sunshine in September in Twin Bridges is 11.1h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
What is the temperature in September in Twin Bridges?
What is the average humidity in September in Twin Bridges?
How many days does it rain in September in Twin Bridges?
When does it start to snow in Twin Bridges?
How many hours of daylight does Twin Bridges have in September?
When are sunrise and sunset in September in Twin Bridges?
How long on average sun shines in September in Twin Bridges?
What is the UV index intensity in September in Twin Bridges?
Average temperature in September
Twin Bridges, CA
- Average high temperature in September: 67.3°F
The warmest month (with the highest average high temperature) is July (74.1°F).
The month with the lowest average high temperature is December (35.4°F).
- Average low temperature in September: 42.3°F
The month with the highest average low temperature is July (47.1°F).
The coldest month (with the lowest average low temperature) is December (20.1°F).
Average pressure in September
Twin Bridges, CA
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Twin Bridges, CA
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Twin Bridges, CA
- Average humidity in September: 45%
The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is August (41%).
Average rainfall in September
Twin Bridges, CA
- Average rainfall in September: 0.39"
The wettest month (with the highest rainfall) is March (4.69").
The driest month (with the least rainfall) is August (0.31").
Average rainfall days in September
Twin Bridges, CA
- Average rainfall days in September: 4.3 days
The month with the highest number of rainy days is May (6.9 days).
The month with the least rainy days is November (1.3 days).
Average snowfall in September
Twin Bridges, CA
- Average snowfall in September: 0.63"
The month with the highest snowfall is March (33.46").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Twin Bridges, CA
- Average snowfall days in September: 1 days
The month with the highest number of snowfall days is March (15.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Twin Bridges, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Twin Bridges, CA
- Average sunshine days in September: 25.2 days
The month with the most sunshine days is August (25.6 days).
The month with the least sunshine days is March (14.7 days).
Average UV index in September
Twin Bridges, CA
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Twin Bridges, CA
- Average cloud cover in September: 10
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in September
Twin Bridges, CA
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April and December (5mi).
Twin Bridges, California, USA
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