Average Weather in Mecca California, United States
In Mecca, the summers are sweltering and arid, the winters are cool, and it is mostly clear year round. Over the course of the year, the temperature typically varies from 40°F to 107°F and is rarely below 32°F or above 113°F.
Based on the beach/pool score, the best time of year to visit Mecca for hot-weather activities is from late May to late September.
The hot season lasts for 3.6 months, from June 4 to September 21, with an average daily high temperature above 99°F. The hottest day of the year is July 13, with an average high of 107°F and low of 78°F.
The cool season lasts for 3.1 months, from November 20 to February 23, with an average daily high temperature below 76°F. The coldest day of the year is December 27, with an average low of 40°F and high of 69°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, 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 Mecca, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Mecca begins around April 10 and lasts for 6.9 months, ending around November 5. On September 18, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 90% of the time, and overcast or mostly cloudy 10% of the time.
The cloudier part of the year begins around November 5 and lasts for 5.1 months, ending around April 10. On February 21, the cloudiest day of the year, the sky is overcast or mostly cloudy 37% of the time, and clear, mostly clear, or partly cloudy 63% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Mecca varies throughout the year.
The wetter season lasts 4.2 months, from November 21 to March 29, with a greater than 7% chance of a given day being a wet day. The chance of a wet day peaks at 14% on February 19.
The drier season lasts 7.8 months, from March 29 to November 21. The smallest chance of a wet day is 1% on June 15.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 14% on February 19.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Mecca experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 4.3 months, from November 19 to March 28, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around February 18, with an average total accumulation of 1.4 inches.
The rainless period of the year lasts for 7.7 months, from March 28 to November 19. The least rain falls around June 13, with an average total accumulation of 0.0 inches.
Average Monthly Rainfall
The length of the day in Mecca varies significantly over the course of the year. In 2018, the shortest day is December 21, with 9 hours, 56 minutes of daylight; the longest day is June 21, with 14 hours, 23 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:33 AM on June 12, and the latest sunrise is 1 hour, 31 minutes later at 7:05 AM on November 3. The earliest sunset is at 4:35 PM on December 5, and the latest sunset is 3 hours, 23 minutes later at 7:58 PM on June 29.
Daylight saving time (DST) is observed in Mecca during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.
Sunrise & Sunset with Twilight and Daylight Saving Time
Mecca experiences some seasonal variation in the perceived humidity.
The muggier period of the year lasts for 2.9 months, from June 29 to September 25, during which time the comfort level is muggy, oppressive, or miserable at least 6% of the time. The muggiest day of the year is August 23, with muggy conditions 25% of the time.
The least muggy day of the year is December 13, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
The average hourly wind speed in Mecca experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 3.9 months, from March 17 to July 12, with average wind speeds of more than 7.5 miles per hour. The windiest day of the year is May 3, with an average hourly wind speed of 8.6 miles per hour.
The calmer time of year lasts for 8.1 months, from July 12 to March 17. The calmest day of the year is August 24, with an average hourly wind speed of 6.4 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Mecca varies throughout the year.
The wind is most often from the west for 8.0 months, from February 18 to October 17, with a peak percentage of 64% on May 23. The wind is most often from the north for 4.0 months, from October 17 to February 18, with a peak percentage of 59% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Mecca throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit Mecca for general outdoor tourist activities are from early April to mid June and from mid September to late October, with a peak score in the second week of May.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Mecca for hot-weather activities is from late May to late September, with a peak score in the last week of June.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season in Mecca typically lasts for 11 months (332 days), from around January 15 to around December 13, rarely starting after February 18, or ending before November 20.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Mecca should appear around January 14, only rarely appearing before January 10 or after January 19.
Growing Degree Days
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.5 months, from April 21 to August 4, with an average daily incident shortwave energy per square meter above 7.6 kWh. The brightest day of the year is June 13, with an average of 8.7 kWh.
The darker period of the year lasts for 3.1 months, from November 5 to February 9, with an average daily incident shortwave energy per square meter below 4.3 kWh. The darkest day of the year is December 22, with an average of 3.2 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Mecca are 33.572 deg latitude, -116.078 deg longitude, and -167 ft elevation.
The topography within 2 miles of Mecca contains only modest variations in elevation, with a maximum elevation change of 157 feet and an average elevation above sea level of -163 feet. Within 10 miles contains only modest variations in elevation (2,667 feet). Within 50 miles contains large variations in elevation (11,001 feet).
The area within 2 miles of Mecca is covered by cropland (56%) and shrubs (38%), within 10 miles by shrubs (50%) and cropland (34%), and within 50 miles by shrubs (71%) and bare soil (14%).
This report illustrates the typical weather in Mecca, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Mecca.
For each station, the records are corrected for the elevation difference between that station and Mecca 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 Mecca is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Mecca and a given station.
The stations contributing to this reconstruction are: Thermal Airport (93%, 10 kilometers, northwest); El Centro, Naval Air Facility (3.2%, 92 kilometers, southeast); Campo (1.7%, 111 kilometers, south); and Blythe Airport (2.0%, 127 kilometers, east).
Time zones for aiports and weather stations are provided by AskGeo.com .