Average Weather in Boron California, United States
In Boron, 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 31°F to 100°F and is rarely below 21°F or above 107°F.
Based on the tourism score, the best time of year to visit Boron for warm-weather activities is from late May to late September.
The hot season lasts for 3.3 months, from June 9 to September 17, with an average daily high temperature above 91°F. The hottest day of the year is July 26, with an average high of 100°F and low of 68°F.
The cold season lasts for 3.2 months, from November 19 to February 27, with an average daily high temperature below 65°F. The coldest day of the year is December 30, with an average low of 31°F and high of 56°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 Boron, 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 Boron begins around April 25 and lasts for 6.3 months, ending around November 4. On September 7, 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 4 and lasts for 5.7 months, ending around April 25. On February 22, the cloudiest day of the year, the sky is overcast or mostly cloudy 43% of the time, and clear, mostly clear, or partly cloudy 57% of the time.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Boron varies throughout the year.
The wetter season lasts 4.3 months, from November 22 to April 1, with a greater than 8% chance of a given day being a wet day. The chance of a wet day peaks at 15% on February 20.
The drier season lasts 7.7 months, from April 1 to November 22. The smallest chance of a wet day is 0% on June 21.
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 15% on February 20.
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. Boron experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 4.4 months, from November 18 to April 1, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around February 19, with an average total accumulation of 1.4 inches.
The rainless period of the year lasts for 7.6 months, from April 1 to November 18. 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 Boron varies significantly over the course of the year. In 2018, the shortest day is December 21, with 9 hours, 48 minutes of daylight; the longest day is June 21, with 14 hours, 31 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:36 AM on June 12, and the latest sunrise is 1 hour, 38 minutes later at 7:13 AM on November 3. The earliest sunset is at 4:38 PM on December 5, and the latest sunset is 3 hours, 30 minutes later at 8:08 PM on June 28.
Daylight saving time (DST) is observed in Boron 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
The perceived humidity level in Boron, 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
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Boron experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.3 months, from March 15 to July 24, with average wind speeds of more than 9.3 miles per hour. The windiest day of the year is June 1, with an average hourly wind speed of 10.7 miles per hour.
The calmer time of year lasts for 7.7 months, from July 24 to March 15. The calmest day of the year is October 9, with an average hourly wind speed of 8.0 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Boron varies throughout the year.
The wind is most often from the west for 11 months, from January 17 to December 9, with a peak percentage of 81% on June 30. The wind is most often from the east for 1.3 months, from December 9 to January 17, with a peak percentage of 33% on January 1.
Boron 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 water temperature experiences some seasonal variation over the course of the year.
The time of year with warmer water lasts for 3.3 months, from July 4 to October 14, with an average temperature above 66°F. The day of the year with the warmest water is August 19, with an average temperature of 68°F.
The time of year with cooler water lasts for 4.7 months, from December 10 to May 2, with an average temperature below 60°F. The day of the year with the coolest water is February 16, with an average temperature of 58°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in Boron 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 time of year to visit Boron for general outdoor tourist activities is from late May to late September, with a peak score in the last week of June.
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 Boron for hot-weather activities is from late June to late August, with a peak score in the third week of July.
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 Boron typically lasts for 7.7 months (235 days), from around March 19 to around November 9, rarely starting before February 17 or after April 13, and rarely ending before October 22 or after November 27.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Boron should appear around February 10, only rarely appearing before January 30 or after February 25.
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 3.8 months, from April 25 to August 18, with an average daily incident shortwave energy per square meter above 7.6 kWh. The brightest day of the year is June 17, with an average of 8.8 kWh.
The darker period of the year lasts for 3.2 months, from November 5 to February 12, with an average daily incident shortwave energy per square meter below 4.1 kWh. The darkest day of the year is December 23, with an average of 3.0 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Boron are 34.999 deg latitude, -117.650 deg longitude, and 2,507 ft elevation.
The topography within 2 miles of Boron contains only modest variations in elevation, with a maximum elevation change of 213 feet and an average elevation above sea level of 2,495 feet. Within 10 miles contains only modest variations in elevation (1,362 feet). Within 50 miles contains very significant variations in elevation (8,396 feet).
The area within 2 miles of Boron is covered by shrubs (100%), within 10 miles by shrubs (93%), and within 50 miles by shrubs (89%).
This report illustrates the typical weather in Boron, 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 Boron.
For each station, the records are corrected for the elevation difference between that station and Boron 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 Boron is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Boron and a given station.
The stations contributing to this reconstruction are: Edwards, Edwards Air Force Auxiliary North Base (66%, 20 kilometers, west); Southern California Logistics Airport (16%, 52 kilometers, southeast); Ridgecrest Community Hospital Heliport (9%, 77 kilometers, north); and Barstow Daggett County Airport (8%, 80 kilometers, east).
Time zones for aiports and weather stations are provided by AskGeo.com .