Average Weather in July in San Francisco Menéndez El Salvador
Daily high temperatures are around 88°F, rarely falling below 84°F or exceeding 92°F. The highest daily average high temperature is 88°F on July 29.
Daily low temperatures are around 73°F, rarely falling below 71°F or exceeding 75°F.
For reference, on April 6, the hottest day of the year, temperatures in San Francisco Menéndez typically range from 73°F to 91°F, while on January 14, the coldest day of the year, they range from 68°F to 88°F.
Average High and Low Temperature in July
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on July. 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 July
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
Chai Buri, Thailand (10,786 miles away); Bentong Town, Malaysia (10,997 miles); and Balagunan, Philippines (9,599 miles) are the far-away foreign places with temperatures most similar to San Francisco Menéndez (view comparison).
The month of July in San Francisco Menéndez experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 90% to 85%.
The clearest day of the month is July 30, with clear, mostly clear, or partly cloudy conditions 15% of the time.
For reference, on June 13, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 92%, while on January 19, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 80%.
Cloud Cover Categories in July
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. In San Francisco Menéndez, the chance of a wet day over the course of July is decreasing, starting the month at 42% and ending it at 37%.
For reference, the year's highest daily chance of a wet day is 42% on September 12, and its lowest chance is 1% on February 15.
Probability of Precipitation in July
To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during July in San Francisco Menéndez is decreasing, starting the month at 5.1 inches, when it rarely exceeds 8.8 inches or falls below 1.0 inches, and ending the month at 4.2 inches, when it rarely exceeds 7.7 inches or falls below 0.9 inches.
The lowest average 31-day accumulation is 4.1 inches on July 27.
Average Monthly Rainfall in July
Over the course of July in San Francisco Menéndez, the length of the day is essentially constant. The shortest day of the month is July 31, with 12 hours, 44 minutes of daylight and the longest day is July 1, with 12 hours, 56 minutes of daylight.
Hours of Daylight and Twilight in July
The earliest sunrise of the month in San Francisco Menéndez is 5:36 AM on July 1 and the latest sunrise is 8 minutes later at 5:44 AM on July 31.
The latest sunset is 6:32 PM on July 9 and the earliest sunset is 4 minutes earlier at 6:28 PM on July 31.
Daylight saving time is not observed in San Francisco Menéndez during 2018.
For reference, on June 21, the longest day of the year, the Sun rises at 5:33 AM and sets 12 hours, 57 minutes later, at 6:30 PM, while on December 21, the shortest day of the year, it rises at 6:18 AM and sets 11 hours, 19 minutes later, at 5:37 PM.
Sunrise & Sunset with Twilight in July
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 chance that a given day will be muggy in San Francisco Menéndez is essentially constant during July, remaining around 100% throughout.
The lowest chance of a muggy day during July is 99% on July 17.
For reference, on August 30, the muggiest day of the year, there are muggy conditions 100% of the time, while on January 15, the least muggy day of the year, there are muggy conditions 59% of the time.
Humidity Comfort Levels in July
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 San Francisco Menéndez is essentially constant during July, remaining within 0.1 miles per hour of 6.0 miles per hour throughout.
For reference, on January 13, the windiest day of the year, the daily average wind speed is 11.8 miles per hour, while on August 30, the calmest day of the year, the daily average wind speed is 5.7 miles per hour.
The highest daily average wind speed during July is 6.1 miles per hour on July 15.
Average Wind Speed in July
Wind Direction in July
San Francisco Menéndez 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 San Francisco Menéndez is essentially constant during July, remaining around 86°F throughout.
Average Water Temperature in July
Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).
Temperatures in San Francisco Menéndez are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.
Time Spent in Various Temperature Bands and the Growing Season in July
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.
The average accumulated growing degree days in San Francisco Menéndez are rapidly increasing during July, increasing by 878°F, from 5,292°F to 6,170°F, over the course of the month.
Growing Degree Days in July
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 in San Francisco Menéndez is essentially constant during July, remaining within 0.2 kWh of 5.0 kWh throughout.
The highest average daily incident shortwave solar energy during July is 5.2 kWh on July 25.
Average Daily Incident Shortwave Solar Energy in July
For the purposes of this report, the geographical coordinates of San Francisco Menéndez are 13.843 deg latitude, -90.016 deg longitude, and 810 ft elevation.
The topography within 2 miles of San Francisco Menéndez contains large variations in elevation, with a maximum elevation change of 1,995 feet and an average elevation above sea level of 925 feet. Within 10 miles contains large variations in elevation (4,678 feet). Within 50 miles also contains extreme variations in elevation (8,911 feet).
The area within 2 miles of San Francisco Menéndez is covered by cropland (38%), trees (30%), and grassland (29%), within 10 miles by cropland (37%) and trees (28%), and within 50 miles by water (40%) and grassland (21%).
This report illustrates the typical weather in San Francisco Menéndez 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 San Francisco Menéndez.
For each station, the records are corrected for the elevation difference between that station and San Francisco Menéndez 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 San Francisco Menéndez is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between San Francisco Menéndez and a given station.
The stations contributing to this reconstruction are: Acajutla (68%, 37 kilometers, southeast); San José Airport (22%, 89 kilometers, west); and La Aurora International Airport (10%, 99 kilometers, northwest).
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.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.