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 in Santa Clara, California, shows an average high-temperature of a still moderately hot 79.2°F (26.2°C), hardly different from the previous month. The nighttime temperature during September exhibits a clear drop from daytime highs, settling at a mild 55.6°F (13.1°C).Humidity
The months with the lowest humidity in Santa Clara are July and September, with an average relative humidity of 61%.Rainfall
In Santa Clara, in September, during 2.7 rainfall days, 0.12" (3mm) of precipitation is typically accumulated. In Santa Clara, during the entire year, the rain falls for 70.2 days and collects up to 9.8" (249mm) of precipitation.Daylight
In September, the average length of the day in Santa Clara, California, is 12h and 25min.On the first day of September in Santa Clara, sunrise is at 6:39 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:51 pm PDT.
Sunshine
In Santa Clara, the average sunshine in September is 11.1h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What is the usual temperature for Santa Clara in September?
What are the least humid months in Santa Clara?
What is the average humidity in September in Santa Clara?
How much does it rain in Santa Clara in September?
What is the average length of the day in September in Santa Clara?
What time are sunrise and sunset in September in Santa Clara?
How many hours of sunshine does Santa Clara have in September?
What is the UV index reading in September in Santa Clara?
Average temperature in September
Santa Clara, CA
- Average high temperature in September: 79.2°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (56.7°F).
- Average low temperature in September: 55.6°F
The month with the highest average low temperature is August (56.3°F).
The coldest months (with the lowest average low temperature) are January and February (43.3°F).
Average pressure in September
Santa Clara, 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 June, August and September (29.92"Hg).
Average wind speed in September
Santa Clara, CA
- Average wind speed in September: 4.4mph
The windiest months (with the highest average wind speed) are April and May (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).
Average humidity in September
Santa Clara, CA
- Average humidity in September: 61%
The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are July and September (61%).
Average rainfall in September
Santa Clara, CA
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is March (1.77").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Santa Clara, CA
- Average rainfall days in September: 2.7 days
The month with the highest number of rainy days is March (12.9 days).
The month with the least rainy days is August (0.8 days).
Average daylight in September /
Average sunshine in September
Santa Clara, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Santa Clara, CA
- Average sunshine days in September: 25.8 days
The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is March (16.7 days).
Average UV index in September
Santa Clara, CA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Santa Clara, CA
- Average cloud cover in September: 10
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in September
Santa Clara, 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).
Santa Clara, California, USA
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