September weather forecastOlema, CA
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Olema, California, with temperature in the range of an average low of 56.3°F (13.5°C) and an average high of 69.4°F (20.8°C).Temperature
In Olema, the month of September is known for its highest average temperatures, reaching a high of 69.4°F (20.8°C) and a low of 56.3°F (13.5°C).Humidity
In Olema, the average relative humidity in September is 75%.Rainfall
In September, in Olema, California, the rain falls for 2.2 days. Throughout September, 0.08" (2mm) of precipitation is accumulated. In Olema, during the entire year, the rain falls for 55.1 days and collects up to 4.65" (118mm) of precipitation.Daylight
In Olema, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:41 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:55 pm PDT.
Sunshine
In Olema, the average sunshine in September is 10.7h.UV index
June through September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Around midday, solar radiation is most harmful; hence, exposure should be limited. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Olema, CA
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is September (69.4°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is September (56.3°F).
The coldest month (with the lowest average low temperature) is December (46.8°F).
Average pressure in September
Olema, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are August and September (29.92"Hg).
Average wind speed in September
Olema, CA
- Average wind speed in September: 7.6mph
The windiest months (with the highest average wind speed) are April and May (10mph).
The calmest month (with the lowest average wind speed) is November (6.9mph).
Average humidity in September
Olema, CA
- Average humidity in September: 75%
The months with the highest relative humidity are July and August (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Olema, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is February (0.98").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Olema, CA
- Average rainfall days in September: 2.2 days
The month with the highest number of rainy days is March (9.4 days).
The month with the least rainy days is June (1.5 days).
Average daylight in September /
Average sunshine in September
Olema, CA
- Average daylight in September: 12h and 24min
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 36min).
- Average sunshine in September: 10h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Olema, CA
- Average sunshine days in September: 25.1 days
The months with the most sunshine days are June and October (25.9 days).
The month with the least sunshine days is March (19.8 days).
Average UV index in September
Olema, CA
- Average UV index in September: 5
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February and December (UV index 3).
Average cloud cover in September
Olema, CA
- Average cloud cover in September: 16
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 16).
Average visibility in September
Olema, 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).
