Weather in September
Temperature
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a warm 75.2°F (24°C) to a pleasant 68°F (20°C). The nighttime average for Olympic Valley in September plummets considerably from its daytime counterpart, resting at an icy 37.4°F (3°C).Rainfall
In Olympic Valley, in September, during 2 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, there are 59 rainfall days, and 47.8" (1214mm) of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:30 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:44 pm PDT.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
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Average temperature in September
Olympic Valley, CA
- Average high temperature in September: 68°F
The warmest months (with the highest average high temperature) are July and August (75.2°F).
The months with the lowest average high temperature are January and December (37.4°F).
- Average low temperature in September: 37.4°F
The month with the highest average low temperature is July (44.6°F).
The coldest months (with the lowest average low temperature) are January and December (15.8°F).
Average rainfall in September
Olympic Valley, CA
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is January (10.1").
The driest month (with the least rainfall) is August (0.3").
Average rainfall days in September
Olympic Valley, CA
- Average rainfall days in September: 2 days
The month with the highest number of rainy days is January (10 days).
The months with the least rainy days are August and October (1 days).
Average daylight in September
Olympic Valley, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
Olympic Valley, California, USA
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