July Weather in Robbah AlgeriaDaily high temperatures are around 103°F, rarely falling below 94°F or exceeding 112°F. Daily low temperatures are around 79°F, rarely falling below 73°F or exceeding 86°F. For reference, on August 4, the hottest day of the year, temperatures in Robbah typically range from 80°F to 104°F, while on January 12, the coldest day of the year, they range from 42°F to 61°F. 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. Anthem, United States (6,349 miles away) is the far-away foreign place with temperatures most similar to Robbah (view comparison). CloudsThe month of July in Robbah experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 7% to 3%. The lowest chance of overcast or mostly cloudy conditions is 2% on July 24. The clearest day of the month is July 24, with clear, mostly clear, or partly cloudy conditions 98% of the time. For reference, on October 12, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 35%, while on July 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 98%. PrecipitationRainfallTo 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 Robbah is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.2 inches or falling below -0.0 inches. SunOver the course of July in Robbah, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 31 minutes, implying an average daily decrease of 1 minute, 3 seconds, and weekly decrease of 7 minutes, 20 seconds. The shortest day of the month is July 31, with 13 hours, 47 minutes of daylight and the longest day is July 1, with 14 hours, 19 minutes of daylight. The earliest sunrise of the month in Robbah is 5:26 AM on July 1 and the latest sunrise is 18 minutes later at 5:44 AM on July 31. The latest sunset is 7:45 PM on July 1 and the earliest sunset is 13 minutes earlier at 7:32 PM on July 31. Daylight saving time is not observed in Robbah during 2024. For reference, on June 20, the longest day of the year, the Sun rises at 5:23 AM and sets 14 hours, 21 minutes later, at 7:44 PM, while on December 21, the shortest day of the year, it rises at 7:32 AM and sets 9 hours, 57 minutes later, at 5:29 PM. The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation. MoonThe figure below presents a compact representation of key lunar data for July 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.
HumidityWe 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 Robbah is gradually increasing during July, rising from 3% to 6% over the course of the month. For reference, on September 13, the muggiest day of the year, there are muggy conditions 14% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time. WindThis 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 Robbah is decreasing during July, decreasing from 10.4 miles per hour to 8.9 miles per hour over the course of the month. For reference, on June 8, the windiest day of the year, the daily average wind speed is 10.7 miles per hour, while on October 29, the calmest day of the year, the daily average wind speed is 7.6 miles per hour. The hourly average wind direction in Robbah throughout July is predominantly from the east, with a peak proportion of 70% on July 5. Growing SeasonDefinitions 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 Robbah 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. 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 Robbah are very rapidly increasing during July, increasing by 1,033°F, from 3,096°F to 4,129°F, over the course of the month. Solar EnergyThis 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 Robbah is essentially constant during July, remaining within 0.1 kWh of 7.8 kWh throughout. The highest average daily incident shortwave solar energy during July is 7.9 kWh on July 11. TopographyFor the purposes of this report, the geographical coordinates of Robbah are 33.280 deg latitude, 6.910 deg longitude, and 295 ft elevation. The topography within 2 miles of Robbah contains only modest variations in elevation, with a maximum elevation change of 171 feet and an average elevation above sea level of 284 feet. Within 10 miles also contains only modest variations in elevation (230 feet). Within 50 miles contains only modest variations in elevation (636 feet). The area within 2 miles of Robbah is covered by bare soil (100%), within 10 miles by bare soil (100%), and within 50 miles by bare soil (100%). Data SourcesThis report illustrates the typical weather in Robbah, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointThere are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Robbah. For each station, the records are corrected for the elevation difference between that station and Robbah 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 Robbah is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Robbah and a given station. The stations contributing to this reconstruction are:
To get a sense of how much these sources agree with each other, you can view a comparison of Robbah and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data. Other DataAll data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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 airports and weather stations are provided by AskGeo.com . Maps are © OpenStreetMap contributors. DisclaimerThe 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. Please review our full terms contained on our Terms of Service page. |