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
With September's onset, the weather reveals a slight temperature decrease, transitioning from 82.6°F (28.1°C) in August to a still warm 73.9°F (23.3°C). Likely records a pronounced decline from the day's peak to an average nighttime low-temperature of 47.3°F (8.5°C) throughout September.Humidity
The average relative humidity in September is 39%.Rainfall
In September, the rain falls for 4.5 days. Throughout September, 0.39" (10mm) of precipitation is accumulated. In Likely, during the entire year, the rain falls for 91.1 days and collects up to 12.64" (321mm) 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 0.16" (4mm) of snow. In Likely, during the entire year, snow falls for 60.7 days and aggregates up to 39.53" (1004mm) of snow.Daylight
In September, the average length of the day is 12h and 27min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:34 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:44 pm PDT.
Sunshine
In September, the average sunshine is 11h.UV index
In Likely, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
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 in Likely?
How many days does it rain in September?
When does it start snowing?
How many hours of daylight does Likely have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Likely have in September?
What is the UV index intensity in September?
Average temperature in September
Likely, CA
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is December (36.1°F).
- Average low temperature in September: 47.3°F
The month with the highest average low temperature is July (52.5°F).
The coldest month (with the lowest average low temperature) is December (23°F).
Average pressure in September
Likely, CA
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Likely, CA
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Likely, CA
- Average humidity in September: 39%
The months with the highest relative humidity are January and December (79%).
The month with the lowest relative humidity is August (34%).
Average rainfall in September
Likely, CA
- Average rainfall in September: 0.39"
The wettest month (with the highest rainfall) is March (1.85").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in September
Likely, CA
- Average rainfall days in September: 4.5 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is July (2.5 days).
Average snowfall in September
Likely, CA
- Average snowfall in September: 0.16"
The month with the highest snowfall is December (9.02").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Likely, CA
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (12.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Likely, 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: 11h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in September
Likely, CA
- Average sunshine days in September: 24.6 days
The months with the most sunshine days are July and August (26.3 days).
The month with the least sunshine days is March (12.8 days).
Average UV index in September
Likely, 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, March, November and December (UV index 2).
Average cloud cover in September
Likely, CA
- Average cloud cover in September: 13
The months with the most cloud cover are March and December (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 8).
Average visibility in September
Likely, CA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Likely, California, USA
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