Average Weather in August in Paso Robles California, United States
The highest daily average high temperature is 89°F on August 15.
Daily low temperatures are around 54°F, rarely falling below 48°F or exceeding 60°F.
For reference, on August 14, the hottest day of the year, temperatures in Paso Robles typically range from 54°F to 89°F, while on December 30, the coldest day of the year, they range from 37°F to 59°F.
Average High and Low Temperature in August
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on August. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in August
The month of August in Paso Robles experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 8% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 8% on August 8.
The clearest day of the month is August 8, with clear, mostly clear, or partly cloudy conditions 92% of the time.
For reference, on February 17, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 48%, while on August 8, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 92%.
Cloud Cover Categories in August
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Paso Robles, the chance of a wet day over the course of August is essentially constant, remaining around 1% throughout.
For reference, the year's highest daily chance of a wet day is 24% on February 20, and its lowest chance is 0% on July 29.
Probability of Precipitation in August
Over the course of August in Paso Robles, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 59 minutes, implying an average daily decrease of 1 minute, 58 seconds, and weekly decrease of 13 minutes, 44 seconds.
The shortest day of the month is August 31, with 12 hours, 56 minutes of daylight and the longest day is August 1, with 13 hours, 55 minutes of daylight.
Hours of Daylight and Twilight in August
The earliest sunrise of the month in Paso Robles is 6:11 AM on August 1 and the latest sunrise is 23 minutes later at 6:34 AM on August 31.
The latest sunset is 8:06 PM on August 1 and the earliest sunset is 36 minutes earlier at 7:30 PM on August 31.
Daylight saving time is observed in Paso Robles during 2017, but it neither starts nor ends during August, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:47 AM and sets 14 hours, 34 minutes later, at 8:21 PM, while on December 21, the shortest day of the year, it rises at 7:08 AM and sets 9 hours, 45 minutes later, at 4:53 PM.
Sunrise & Sunset with Twilight in August
The chance that a given day will be muggy in Paso Robles is essentially constant during August, remaining around 0% throughout.
For reference, on September 14, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in August
The average hourly wind speed in Paso Robles is essentially constant during August, remaining within 0.2 miles per hour of 6.7 miles per hour throughout.
For reference, on May 29, the windiest day of the year, the daily average wind speed is 8.6 miles per hour, while on September 10, the calmest day of the year, the daily average wind speed is 6.5 miles per hour.
Average Wind Speed in August
Wind Direction in August
Paso Robles is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average surface water temperature in Paso Robles is essentially constant during August, remaining around 59°F throughout.
Average Water Temperature in August
The growing season in Paso Robles typically lasts for 8.8 months (267 days), from around February 25 to around November 20, rarely starting before January 9 or after April 11, and rarely ending before October 28 or after December 10.
The month of August in Paso Robles is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in August
The average accumulated growing degree days in Paso Robles are rapidly increasing during August, increasing by 547°F, from 1,958°F to 2,506°F, over the course of the month.
Growing Degree Days in August
The average daily incident shortwave solar energy in Paso Robles is gradually decreasing during August, falling by 0.9 kWh, from 8.1 kWh to 7.1 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in August
For the purposes of this report, the geographical coordinates of Paso Robles are 35.627 deg latitude, -120.691 deg longitude, and 843 ft elevation.
The topography within 2 miles of Paso Robles contains very significant variations in elevation, with a maximum elevation change of 879 feet and an average elevation above sea level of 880 feet. Within 10 miles also contains very significant variations in elevation (1,709 feet). Within 50 miles contains very significant variations in elevation (4,967 feet).
The area within 2 miles of Paso Robles is covered by grassland (46%), artificial surfaces (28%), shrubs (16%), and cropland (11%), within 10 miles by grassland (75%) and cropland (11%), and within 50 miles by grassland (45%) and water (23%).
This report illustrates the typical weather in Paso Robles year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Paso Robles.
For each station, the records are corrected for the elevation difference between that station and Paso Robles according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Paso Robles is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Paso Robles and a given station.
The stations contributing to this reconstruction are: Paso Robles Municipal Airport (90%, 7 kilometers, northeast); San Luis Obispo County Airport (6%, 44 kilometers, south); and Point Piedras Blanca (4.1%, 54 kilometers, west).
Time zones for aiports and weather stations are provided by AskGeo.com .