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
September signifies a gentle decline in Quincy's average high-temperature, easing from a warm 83.7°F (28.7°C) in August to a still moderately hot 77.7°F (25.4°C). A significant drop from the day's peak to an average low-temperature of 48.4°F (9.1°C) is noted during the nights in September in Quincy.Humidity
The average relative humidity in September is 45%.Rainfall
In Quincy, in September, it is raining for 3.3 days, with typically 0.43" (11mm) of accumulated precipitation. Throughout the year, in Quincy, there are 71.8 rainfall days, and 39.29" (998mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows in Quincy. Throughout September, in the average 0.3 snowfall days, it receives 0.35" (9mm) of snow. Throughout the year, there are 64 snowfall days, and 184.53" (4687mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:34 pm. On the last day of September, in Quincy, sunrise is at 6:59 am and sunset at 6:47 pm PDT.
Sunshine
In Quincy, the average sunshine in September is 11.2h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 4 in September translates into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Frequently asked questions
What are September temperatures in Quincy?
What is the average humidity in September in Quincy?
How much does it rain in Quincy in September?
When does it start snowing in Quincy?
What is the average length of the day in September in Quincy?
What time are sunrise and sunset in September in Quincy?
How many hours of sunshine does Quincy have in September?
How high is the UV index in September in Quincy?
Average temperature in September
Quincy, CA
- Average high temperature in September: 77.7°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in September: 48.4°F
The month with the highest average low temperature is July (52.9°F).
The coldest month (with the lowest average low temperature) is December (27.7°F).
Average pressure in September
Quincy, CA
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Quincy, CA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (6.4mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Quincy, CA
- Average humidity in September: 45%
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is July (40%).
Average rainfall in September
Quincy, CA
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is March (7.56").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in September
Quincy, CA
- Average rainfall days in September: 3.3 days
The month with the highest number of rainy days is May (10.6 days).
The month with the least rainy days is August (2.2 days).
Average snowfall in September
Quincy, CA
- Average snowfall in September: 0.35"
The month with the highest snowfall is March (43.23").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Quincy, CA
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is March (13.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Quincy, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- 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: 5h and 30min).
Average sunshine days in September
Quincy, CA
- Average sunshine days in September: 25.9 days
The month with the most sunshine days is August (27.9 days).
The month with the least sunshine days is March (13.4 days).
Average UV index in September
Quincy, CA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Quincy, CA
- Average cloud cover in September: 10
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in September
Quincy, CA
- Average visibility in September: 6mi
The months with the highest visibility are February, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, March and December (5mi).
Quincy, California, USA
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