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
Welcoming September, Paso Robles notes an average high-temperature of a moderately hot 84.2°F (29°C), nearly consistent with August's 87.1°F (30.6°C). Significant dips from daytime highs mark the September nights, with a consistent average temperature of 59.9°F (15.5°C).Heat index
In September, the heat index is computed to be 84.2°F (29°C). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely vital to babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Humidity
The least humid month is September, with an average relative humidity of 48%.Rainfall
In Paso Robles, during September, the rain falls for 1.5 days and regularly aggregates up to 0.08" (2mm) of precipitation. In Paso Robles, California, during the entire year, the rain falls for 46.4 days and collects up to 4.49" (114mm) of precipitation.Daylight
In Paso Robles, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:57 am and sunset at 6:47 pm PDT.
Sunshine
In September, the average sunshine is 11.4h.UV index
The months with the highest UV index in Paso Robles, California, are June through September, with an average maximum UV index of 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: In September, the maximum UV index of 6 transforms into these recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Paso Robles in September?
What is the least humid month in Paso Robles?
What is the average humidity in September in Paso Robles?
How much does it rain in Paso Robles in September?
How many hours of daylight does Paso Robles have in September?
When are sunrise and sunset in September in Paso Robles?
How long on average sun shines in September in Paso Robles?
What is the month with the highest UV index in Paso Robles?
How high is the UV index in September in Paso Robles?
Average temperature in September
Paso Robles, CA
- Average high temperature in September: 84.2°F
The warmest month (with the highest average high temperature) is August (87.1°F).
The month with the lowest average high temperature is December (58.3°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is February (42.4°F).
Average pressure in September
Paso Robles, CA
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed in September
Paso Robles, CA
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).
Average humidity in September
Paso Robles, CA
- Average humidity in September: 48%
The months with the highest relative humidity are February and March (68%).
The month with the lowest relative humidity is September (48%).
Average rainfall in September
Paso Robles, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is March (0.94").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in September
Paso Robles, CA
- Average rainfall days in September: 1.5 days
The month with the highest number of rainy days is March (9.1 days).
The month with the least rainy days is August (0.7 days).
Average daylight in September /
Average sunshine in September
Paso Robles, 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, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 18min).
Average sunshine days in September
Paso Robles, CA
- Average sunshine days in September: 28.1 days
The month with the most sunshine days is August (29.8 days).
The months with the least sunshine days are February and March (21 days).
Average UV index in September
Paso Robles, 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
Paso Robles, CA
- Average cloud cover in September: 6
The month with the most cloud cover is March (Cloud cover 30).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in September
Paso Robles, 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).
Paso Robles, California, USA
Weather forecast for your location
2. Allow the app to use your location