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
The beginning of September brings a slight decrease in the average high-temperature, transitioning from 81.1°F (27.3°C) in August to a still warm 73.9°F (23.3°C). Santa Clara's average low-temperature of 47.8°F (8.8°C) in September reflects a significant disparity from the daytime highs.Humidity
In Santa Clara, the average relative humidity in September is 73%.Rainfall
In Santa Clara, during September, the rain falls for 7.9 days and regularly aggregates up to 1.34" (34mm) of precipitation. Throughout the year, there are 160.7 rainfall days, and 29.06" (738mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day in Santa Clara is 12h and 29min.On the first day of September in Santa Clara, sunrise is at 6:36 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:54 pm PDT.
Sunshine
In Santa Clara, the average sunshine in September is 9.3h.UV index
In Santa Clara, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
What is the average September temperature in Santa Clara?
What is the average humidity in September in Santa Clara?
How many days does it rain in September in Santa Clara?
When it does not snow in Santa Clara?
How many hours of daylight does Santa Clara have in September?
What time are sunrise and sunset in September in Santa Clara?
How long on average sun shines in September in Santa Clara?
What is the UV index intensity in September in Santa Clara?
Average temperature in September
Santa Clara, OR
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (46°F).
- Average low temperature in September: 47.8°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).
Average pressure in September
Santa Clara, OR
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in September
Santa Clara, OR
- Average wind speed in September: 3.7mph
The windiest months (with the highest average wind speed) are January, February, March and December (4.5mph).
The calmest months (with the lowest average wind speed) are August and September (3.7mph).
Average humidity in September
Santa Clara, OR
- Average humidity in September: 73%
The months with the highest relative humidity are February and December (87%).
The month with the lowest relative humidity is August (68%).
Average rainfall in September
Santa Clara, OR
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is December (4.45").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in September
Santa Clara, OR
- Average rainfall days in September: 7.9 days
The month with the highest number of rainy days is March (19.8 days).
The months with the least rainy days are July and August (3.8 days).
Average snowfall in September
Santa Clara, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.13").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Santa Clara, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Santa Clara, OR
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in September
Santa Clara, OR
- Average sunshine days in September: 20.7 days
The months with the most sunshine days are July and August (25.3 days).
The month with the least sunshine days is February (9.6 days).
Average UV index in September
Santa Clara, OR
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Santa Clara, OR
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Santa Clara, OR
- Average visibility in September: 5mi
The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).
Santa Clara, Oregon, USA
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