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
A moderate decline in average high-temperatures is noted in September, moving from a moderately hot 83.3°F (28.5°C) in August to a still warm 76.8°F (24.9°C). Despite a stark disparity with daily highs, Orleans records an average nighttime temperature of 43.7°F (6.5°C) in September.Humidity
In Orleans, the average relative humidity in September is 63%.Rainfall
In September, the rain falls for 4.5 days. Throughout September, 0.91" (23mm) of precipitation is accumulated. Throughout the year, there are 127.2 rainfall days, and 39.02" (991mm) of precipitation is accumulated.Snowfall
In Orleans, snow does not fall in April through November.Daylight
The average length of the day in September in Orleans is 12h and 27min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:46 pm. On the last day of September, in Orleans, sunrise is at 7:10 am and sunset at 6:57 pm PDT.
Sunshine
In September, the average sunshine is 10.3h.UV index
The average daily maximum UV index in September in Orleans is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 4 in September translates into this advice:
Heed the precautions - Suggestions to avoid sunburn are made. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What is the temperature in September in Orleans?
What is the average humidity in September in Orleans?
How many days does it rain in September in Orleans?
When it does not snow in Orleans?
What is the average length of the day in September in Orleans?
When are sunrise and sunset in September in Orleans?
How long on average sun shines in September in Orleans?
What is the UV index reading in September in Orleans?
Average temperature in September
Orleans, CA
- Average high temperature in September: 76.8°F
The warmest month (with the highest average high temperature) is August (83.3°F).
The month with the lowest average high temperature is December (47.1°F).
- Average low temperature in September: 43.7°F
The month with the highest average low temperature is July (47.5°F).
The coldest month (with the lowest average low temperature) is December (30.7°F).
Average pressure in September
Orleans, CA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in September
Orleans, CA
- Average wind speed in September: 3.8mph
The windiest month (with the highest average wind speed) is March (5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in September
Orleans, CA
- Average humidity in September: 63%
The month with the highest relative humidity is March (84%).
The month with the lowest relative humidity is August (61%).
Average rainfall in September
Orleans, CA
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is January (7.17").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in September
Orleans, CA
- Average rainfall days in September: 4.5 days
The month with the highest number of rainy days is March (19.3 days).
The months with the least rainy days are July and August (2.3 days).
Average snowfall in September
Orleans, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Orleans, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 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
Orleans, CA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Orleans, CA
- Average sunshine days in September: 24.5 days
The month with the most sunshine days is July (27.6 days).
The month with the least sunshine days is March (10.3 days).
Average UV index in September
Orleans, CA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover in September
Orleans, CA
- Average cloud cover in September: 20
The month with the most cloud cover is March (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in September
Orleans, CA
- Average visibility in September: 6mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are March, April and December (4mi).
Orleans, California, USA
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