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
The transition into September notes an average high-temperature of a still warm 84.2°F (29°C), revealing a mild distinction from the 85.6°F (29.8°C) in August. Los Nietos observes an average low-temperature of 65.1°F (18.4°C) during September nights.Heat index
In September, the average heat index is appraised at a tropical 86°F (30°C). With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.Be aware that heat index ratings are designed for shaded locations and minor breezes. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humidity
The average relative humidity in September is 54%.Rainfall
In Los Nietos, California, in September, it is raining for 1.3 days, with typically 0.04" (1mm) of accumulated precipitation. Throughout the year, in Los Nietos, there are 27.3 rainfall days, and 1.97" (50mm) of precipitation is accumulated.Daylight
In Los Nietos, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:26 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:37 pm PDT.
Sunshine
In September, the average sunshine in Los Nietos, California, is 10.6h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 6 in September translates into these instructions:
Resist overexposure. Safeguarding from solar damage is indispensable. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Los Nietos?
What is the average humidity in September in Los Nietos?
How much does it rain in Los Nietos in September?
What is the average length of the day in September in Los Nietos?
When are sunrise and sunset in September in Los Nietos?
How long on average sun shines in September in Los Nietos?
What is the UV index reading in September in Los Nietos?
Average temperature in September
Los Nietos, CA
- Average high temperature in September: 84.2°F
The warmest month (with the highest average high temperature) is August (85.6°F).
The month with the lowest average high temperature is December (64.8°F).
- Average low temperature in September: 65.1°F
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (49.8°F).
Average pressure in September
Los Nietos, CA
- Average pressure in September: 29.89"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Los Nietos, CA
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest months (with the lowest average wind speed) are September and October (4.7mph).
Average humidity in September
Los Nietos, CA
- Average humidity in September: 54%
The month with the highest relative humidity is June (63%).
The month with the lowest relative humidity is November (48%).
Average rainfall in September
Los Nietos, CA
- Average rainfall in September: 0.04"
The wettest month (with the highest rainfall) is December (0.47").
The driest month (with the least rainfall) is June (0").
Average rainfall days in September
Los Nietos, CA
- Average rainfall days in September: 1.3 days
The month with the highest number of rainy days is March (4.6 days).
The month with the least rainy days is June (0.5 days).
Average daylight in September /
Average sunshine in September
Los Nietos, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 10h and 4min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in September
Los Nietos, CA
- Average sunshine days in September: 27.6 days
The month with the most sunshine days is June (29.3 days).
The month with the least sunshine days is February (23.8 days).
Average UV index in September
Los Nietos, CA
- Average UV index in September: 6
The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are February, November and December (UV index 4).
Average cloud cover in September
Los Nietos, CA
- Average cloud cover in September: 8
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in September
Los Nietos, 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).
Los Nietos, California, USA
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