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 move into September indicates a slight reduction in the average high-temperature, down from August's hot 88.9°F (31.6°C) to a warm 82.9°F (28.3°C). Despite considerable daily temperature swings, a steady low-temperature average of 57°F (13.9°C) is noted in Standard throughout September.Humidity
In September, the average relative humidity is 36%.Rainfall
In Standard, in September, during 2.8 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. In Standard, during the entire year, the rain falls for 79.1 days and collects up to 27.32" (694mm) of precipitation.Snowfall
In Standard, snow does not fall in May through October.Daylight
In Standard, the average length of the day in September is 12h and 25min.On the first day of September in Standard, sunrise is at 6:31 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:45 pm PDT.
Sunshine
In Standard, California, the average sunshine in September is 11.3h.UV index
In Standard, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Put precautions into practice - Guidance to elude sunburn is provided. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
How hot is it in Standard in September?
What is the average humidity in September in Standard?
How many days does it rain in September in Standard?
When it does not snow in Standard?
How many hours of daylight does Standard have in September?
What time are sunrise and sunset in September in Standard?
How many hours of sunshine does Standard have in September?
What is the UV index intensity in September in Standard?
Average temperature in September
Standard, CA
- Average high temperature in September: 82.9°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is December (51.4°F).
- Average low temperature in September: 57°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is December (35.1°F).
Average pressure in September
Standard, CA
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Standard, CA
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is February (5.8mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in September
Standard, CA
- Average humidity in September: 36%
The month with the highest relative humidity is March (70%).
The months with the lowest relative humidity are July and August (33%).
Average rainfall in September
Standard, CA
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is March (5.31").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Standard, CA
- Average rainfall days in September: 2.8 days
The month with the highest number of rainy days is March (14 days).
The month with the least rainy days is August (1.2 days).
Average snowfall in September
Standard, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (8.58").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Standard, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.1 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
Standard, CA
- Average daylight in September: 12h and 2min
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: 11h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Standard, CA
- Average sunshine days in September: 26.6 days
The months with the most sunshine days are July and August (28.8 days).
The month with the least sunshine days is March (15.4 days).
Average UV index in September
Standard, CA
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 2).
Average cloud cover in September
Standard, CA
- Average cloud cover in September: 6
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Standard, 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).
Standard, California, USA
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