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 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
September's arrival shows an average high-temperature of a still warm 78.3°F (25.7°C), hardly different from the previous month. The temperature lowers to an average of 63.1°F (17.3°C) during September nights.Humidity
In September, the average relative humidity is 61%.Rainfall
In Oak Park, in September, during 2.8 rainfall days, 0.16" (4mm) of precipitation is typically accumulated. Throughout the year, there are 52.4 rainfall days, and 9.96" (253mm) of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:20 pm. On the last day of September, in Oak Park, sunrise is at 6:49 am and sunset at 6:40 pm PDT.
Sunshine
In Oak Park, the average sunshine in September is 10.9h.UV index
The months with the highest UV index in Oak Park, California, are June through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Frequently asked questions
What is the average September temperature in Oak Park?
What is the average humidity in September in Oak Park?
How many days does it rain in September in Oak Park?
How many hours of daylight does Oak Park have in September?
When are sunrise and sunset in September in Oak Park?
How many hours of sunshine does Oak Park have in September?
What are the months with the highest UV index in Oak Park?
What is the UV index reading in September in Oak Park?
Average temperature in September
Oak Park, CA
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is August (79.9°F).
The month with the lowest average high temperature is December (61.3°F).
- Average low temperature in September: 63.1°F
The month with the highest average low temperature is August (64°F).
The coldest month (with the lowest average low temperature) is February (49.3°F).
Average pressure in September
Oak Park, CA
- Average pressure in September: 29.9"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).
Average wind speed in September
Oak Park, CA
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are April and December (6.4mph).
The calmest months (with the lowest average wind speed) are August and September (4.7mph).
Average humidity in September
Oak Park, CA
- Average humidity in September: 61%
The month with the highest relative humidity is June (69%).
The month with the lowest relative humidity is November (53%).
Average rainfall in September
Oak Park, CA
- Average rainfall in September: 0.16"
The wettest months (with the highest rainfall) are January and February (2.09").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Oak Park, CA
- Average rainfall days in September: 2.8 days
The month with the highest number of rainy days is March (7.5 days).
The month with the least rainy days is August (1.9 days).
Average daylight in September /
Average sunshine in September
Oak Park, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 10h and 5min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in September
Oak Park, CA
- Average sunshine days in September: 23.7 days
The month with the most sunshine days is October (26.4 days).
The month with the least sunshine days is February (20.8 days).
Average UV index in September
Oak Park, CA
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in September
Oak Park, CA
- Average cloud cover in September: 8
The month with the most cloud cover is March (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Oak Park, 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).
Oak Park, California, USA
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