Average Weather in September in Santa Maria California, United States
In Santa Maria, the month of September is characterized by essentially constant daily high temperatures, with daily highs around 75°F throughout the month, rarely exceeding 86°F or dropping below 68°F. The highest daily average high temperature is 75°F on September 24.
Daily low temperatures decrease by 2°F, from 55°F to 53°F, rarely falling below 47°F or exceeding 60°F.
For reference, on September 21, the hottest day of the year, temperatures in Santa Maria typically range from 54°F to 75°F, while on December 23, the coldest day of the year, they range from 41°F to 63°F.
Average High and Low Temperature in September
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. 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 September
The month of September in Santa Maria experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 8% to 13%.
The clearest day of the month is September 7, with clear, mostly clear, or partly cloudy conditions 92% of the time.
For reference, on February 23, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 46%, while on August 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 92%.
Cloud Cover in September
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Santa Maria, the chance of a wet day over the course of September is gradually increasing, starting the month at 1% and ending it at 3%.
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 31.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Santa Maria is essentially constant, remaining about 0.2 inches throughout, and rarely exceeding 0.8 inches or falling below -0.0 inches.
Average Monthly Rainfall in September
Over the course of September in Santa Maria, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 3 minutes, implying an average daily decrease of 2 minutes, 10 seconds, and weekly decrease of 15 minutes, 7 seconds.
The shortest day of the month is September 30, with 11 hours, 51 minutes of daylight and the longest day is September 1, with 12 hours, 53 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Santa Maria is 6:34 AM on September 1 and the latest sunrise is 21 minutes later at 6:55 AM on September 30.
The latest sunset is 7:27 PM on September 1 and the earliest sunset is 41 minutes earlier at 6:46 PM on September 30.
Daylight saving time is observed in Santa Maria during 2017, but it neither starts nor ends during September, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:48 AM and sets 14 hours, 31 minutes later, at 8:18 PM, while on December 21, the shortest day of the year, it rises at 7:05 AM and sets 9 hours, 48 minutes later, at 4:54 PM.
Sunrise & Sunset with Twilight in September
The chance that a given day will be muggy in Santa Maria is essentially constant during September, remaining around 0% throughout.
For reference, on July 8, 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 September
The average hourly wind speed in Santa Maria is essentially constant during September, remaining within 0.1 miles per hour of 4.0 miles per hour throughout.
For reference, on April 26, the windiest day of the year, the daily average wind speed is 5.3 miles per hour, while on August 10, the calmest day of the year, the daily average wind speed is 3.9 miles per hour.
Average Wind Speed in September
Wind Direction in September
Santa Maria 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 Santa Maria is essentially constant during September, remaining around 60°F throughout.
The highest average surface water temperature during September is 61°F on September 26.
Average Water Temperature in September
The average daily incident shortwave solar energy in Santa Maria is decreasing during September, falling by 1.4 kWh, from 7.1 kWh to 5.7 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in September
For the purposes of this report, the geographical coordinates of Santa Maria are 34.953 deg latitude, -120.436 deg longitude, and 220 ft elevation.
The topography within 2 miles of Santa Maria is essentially flat, with a maximum elevation change of 75 feet and an average elevation above sea level of 216 feet. Within 10 miles is essentially flat (2,631 feet). Within 50 miles contains large variations in elevation (6,814 feet).
The area within 2 miles of Santa Maria is covered by artificial surfaces (78%) and cropland (20%), within 10 miles by cropland (39%) and grassland (38%), and within 50 miles by water (38%) and grassland (31%).
This report illustrates the typical weather in Santa Maria 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 Santa Maria.
For each station, the records are corrected for the elevation difference between that station and Santa Maria 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 Santa Maria is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Santa Maria and a given station.
The stations contributing to this reconstruction are: Santa Maria Airport (93%, 6 kilometers, south); San Luis Obispo County Airport (6%, 37 kilometers, northwest); and Meadows Field (0.9%, 137 kilometers, northeast).
Time zones for aiports and weather stations are provided by AskGeo.com .