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's arrival subtly correlates with a reduction in the average high-temperature, down from 79.5°F (26.4°C) in August to a still moderately hot 73.4°F (23°C). Lakeshore experiences a consistent, yet significant, drop from daily highs to a low-temperature of 48.6°F (9.2°C) throughout September.Humidity
The average relative humidity in September is 37%.Rainfall
In Lakeshore, during September, the rain falls for 3.4 days and regularly aggregates up to 0.28" (7mm) of precipitation. In Lakeshore, during the entire year, the rain falls for 49.9 days and collects up to 22.09" (561mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 53.9 snowfall days, and 134.09" (3406mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:24 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:40 pm PDT.
Sunshine
In Lakeshore, the average sunshine in September is 11.1h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Enhance your sun protection with tightly woven, yet airy clothing. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing?
What is the average length of the day in September?
When is the sunrise / sunset in September in Lakeshore?
How many hours of sunshine does Lakeshore have in September?
What is the UV index intensity in September?
Average temperature in September
Lakeshore, CA
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is December (41.7°F).
- Average low temperature in September: 48.6°F
The month with the highest average low temperature is July (54.5°F).
The coldest month (with the lowest average low temperature) is December (24.1°F).
Average pressure in September
Lakeshore, 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 (29.88"Hg).
Average wind speed in September
Lakeshore, CA
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest months (with the lowest average wind speed) are August and November (4.5mph).
Average humidity in September
Lakeshore, CA
- Average humidity in September: 37%
The month with the highest relative humidity is March (72%).
The month with the lowest relative humidity is August (34%).
Average rainfall in September
Lakeshore, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is August (0.24").
Average rainfall days in September
Lakeshore, CA
- Average rainfall days in September: 3.4 days
The month with the highest number of rainy days is May (8.2 days).
The month with the least rainy days is January (2.1 days).
Average snowfall in September
Lakeshore, CA
- Average snowfall in September: 0.08"
The month with the highest snowfall is February (28.46").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Lakeshore, CA
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is March (10.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Lakeshore, 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 months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).
Average sunshine days in September
Lakeshore, CA
- Average sunshine days in September: 24.5 days
The month with the most sunshine days is October (27.2 days).
The month with the least sunshine days is April (18 days).
Average UV index in September
Lakeshore, 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 January, February, March, November and December (UV index 2).
Average cloud cover in September
Lakeshore, CA
- Average cloud cover in September: 6
The month with the most cloud cover is March (Cloud cover 29).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Lakeshore, 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).
Lakeshore, California, USA
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