Average Weather in Richgrove California, United States
In Richgrove, the summers are sweltering, arid, and clear and the winters are cold and partly cloudy. Over the course of the year, the temperature typically varies from 38°F to 98°F and is rarely below 30°F or above 105°F.
The hot season lasts for 3.5 months, from June 5 to September 21, with an average daily high temperature above 90°F. The hottest day of the year is July 18, with an average high of 98°F and low of 67°F.
The cool season lasts for 3.1 months, from November 20 to February 24, with an average daily high temperature below 65°F. The coldest day of the year is December 30, with an average low of 38°F and high of 57°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 Richgrove, 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 Richgrove begins around May 8 and lasts for 5.8 months, ending around November 1. On August 9, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 92% of the time, and overcast or mostly cloudy 8% of the time.
The cloudier part of the year begins around November 1 and lasts for 6.2 months, ending around May 8. On February 22, the cloudiest day of the year, the sky is overcast or mostly cloudy 46% of the time, and clear, mostly clear, or partly cloudy 54% 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 Richgrove varies throughout the year.
The wetter season lasts 5.2 months, from November 9 to April 15, with a greater than 11% chance of a given day being a wet day. The chance of a wet day peaks at 22% on February 21.
The drier season lasts 6.8 months, from April 15 to November 9. The smallest chance of a wet day is 0% on June 27.
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 22% on February 21.
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. Richgrove experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 6.4 months, from October 19 to April 30, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around January 3, with an average total accumulation of 2.0 inches.
The rainless period of the year lasts for 5.6 months, from April 30 to October 19. The least rain falls around July 16, with an average total accumulation of 0.0 inches.
Average Monthly Rainfall
The length of the day in Richgrove varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 44 minutes of daylight; the longest day is June 20, with 14 hours, 35 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:39 AM on June 13, and the latest sunrise is 1 hour, 42 minutes later at 7:21 AM on November 4. The earliest sunset is at 4:42 PM on December 5, and the latest sunset is 3 hours, 34 minutes later at 8:16 PM on June 28.
Daylight saving time (DST) is observed in Richgrove during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.
Sunrise & Sunset with Twilight and Daylight Saving Time
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
The perceived humidity level in Richgrove, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.
Humidity Comfort Levels
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed in Richgrove experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.0 months, from March 27 to July 28, with average wind speeds of more than 5.2 miles per hour. The windiest day of the year is May 31, with an average hourly wind speed of 6.3 miles per hour.
The calmer time of year lasts for 8.0 months, from July 28 to March 27. The calmest day of the year is November 12, with an average hourly wind speed of 4.1 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Richgrove varies throughout the year.
The wind is most often from the west for 8.8 months, from February 17 to November 11, with a peak percentage of 75% on July 18. The wind is most often from the east for 3.2 months, from November 11 to February 17, with a peak percentage of 40% on January 1.
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
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 3.6 months, from May 3 to August 22, with an average daily incident shortwave energy per square meter above 7.4 kWh. The brightest day of the year is June 22, with an average of 8.6 kWh.
The darker period of the year lasts for 3.4 months, from November 5 to February 15, with an average daily incident shortwave energy per square meter below 3.8 kWh. The darkest day of the year is December 25, with an average of 2.6 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Richgrove are 35.797 deg latitude, -119.108 deg longitude, and 502 ft elevation.
The topography within 2 miles of Richgrove contains only modest variations in elevation, with a maximum elevation change of 115 feet and an average elevation above sea level of 507 feet. Within 10 miles contains only modest variations in elevation (761 feet). Within 50 miles contains significant variations in elevation (11,198 feet).
The area within 2 miles of Richgrove is covered by cropland (88%), within 10 miles by cropland (63%) and grassland (33%), and within 50 miles by cropland (42%) and grassland (28%).
This report illustrates the typical weather in Richgrove, 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 Richgrove.
For each station, the records are corrected for the elevation difference between that station and Richgrove 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 Richgrove is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Richgrove and a given station.
The stations contributing to this reconstruction are: Porterville Municipal Airport (62%, 26 kilometers, north); Meadows Field (32%, 41 kilometers, south); and Ridgecrest Community Hospital Heliport (5%, 128 kilometers, east).
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.