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 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 ushers in an average high-temperature of a warm 84.2°F (29°C), aligning closely with the preceding month. Lake Nacimiento sees a major change from daytime highs, with the nighttime temperature dipping to a moderate 60.1°F (15.6°C) on average during September.Heat index
September's heat index is calculated to be 84.2°F (29°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.In reference to the heat index, it's for places in shade and with a slight wind. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Humidity
With an average relative humidity of 47%, September is the least humid month.Rainfall
In September, the rain falls for 1.5 days. Throughout September, 0.08" (2mm) of precipitation is accumulated. Throughout the year, in Lake Nacimiento, there are 55.2 rainfall days, and 9.06" (230mm) of precipitation is accumulated.Daylight
In September, the average length of the day in Lake Nacimiento is 12h and 23min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:30 pm. On the last day of September, in Lake Nacimiento, sunrise is at 6:58 am and sunset at 6:48 pm PDT.
Sunshine
The average sunshine in September in Lake Nacimiento is 11.4h.UV index
The months with the highest UV index in Lake Nacimiento are June through September, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 6 in September transforms into this advice:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
How hot is September in Lake Nacimiento?
What is the least humid month in Lake Nacimiento?
What is the average humidity in September in Lake Nacimiento?
How many days does it rain in September in Lake Nacimiento?
What is the average length of the day in September in Lake Nacimiento?
When are sunrise and sunset in September in Lake Nacimiento?
How long on average sun shines in September in Lake Nacimiento?
What is the month with the highest UV index in Lake Nacimiento?
How high is the UV index in September in Lake Nacimiento?
Average temperature in September
Lake Nacimiento, CA
- Average high temperature in September: 84.2°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (58.1°F).
- Average low temperature in September: 60.1°F
The month with the highest average low temperature is August (60.8°F).
The coldest months (with the lowest average low temperature) are February and December (42.8°F).
Average pressure in September
Lake Nacimiento, CA
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June and September (29.91"Hg).
Average wind speed in September
Lake Nacimiento, CA
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is May (6.1mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in September
Lake Nacimiento, CA
- Average humidity in September: 47%
The month with the highest relative humidity is February (68%).
The month with the lowest relative humidity is September (47%).
Average rainfall in September
Lake Nacimiento, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is January (1.77").
The driest month (with the least rainfall) is August (0.04").
Average rainfall days in September
Lake Nacimiento, CA
- Average rainfall days in September: 1.5 days
The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is August (0.8 days).
Average daylight in September /
Average sunshine in September
Lake Nacimiento, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 11h and 2min
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 24min).
Average sunshine days in September
Lake Nacimiento, CA
- Average sunshine days in September: 27.8 days
The month with the most sunshine days is August (29 days).
The month with the least sunshine days is February (19.8 days).
Average UV index in September
Lake Nacimiento, CA
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in September
Lake Nacimiento, CA
- Average cloud cover in September: 5
The month with the most cloud cover is March (Cloud cover 29).
The months with the least cloud cover are July, August and September (Cloud cover 5).
Average visibility in September
Lake Nacimiento, 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).
Lake Nacimiento, California, USA
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