July Weather in Terrytown United StatesDaily high temperatures are around 91°F, rarely falling below 86°F or exceeding 96°F. The highest daily average high temperature is 91°F on July 21. Daily low temperatures are around 77°F, rarely falling below 73°F or exceeding 81°F. The highest daily average low temperature is 77°F on July 25. For reference, on July 20, the hottest day of the year, temperatures in Terrytown typically range from 77°F to 91°F, while on January 13, the coldest day of the year, they range from 47°F to 63°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. Luxu, China (8,568 miles away) and Zhangzhou, China (8,261 miles) are the far-away foreign places with temperatures most similar to Terrytown (view comparison). CloudsThe month of July in Terrytown experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 55% to 59%. The highest chance of overcast or mostly cloudy conditions is 60% on July 29. The clearest day of the month is July 1, with clear, mostly clear, or partly cloudy conditions 45% of the time. For reference, on July 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 60%, while on October 25, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 67%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Terrytown, the chance of a wet day over the course of July is increasing, starting the month at 55% and ending it at 59%. For reference, the year's highest daily chance of a wet day is 60% on July 28, and its lowest chance is 20% on October 29. RainfallTo 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 Terrytown is gradually decreasing, starting the month at 5.7 inches, when it rarely exceeds 8.7 inches or falls below 2.7 inches, and ending the month at 5.2 inches, when it rarely exceeds 8.2 inches or falls below 2.5 inches. SunOver the course of July in Terrytown, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 28 minutes, implying an average daily decrease of 55 seconds, and weekly decrease of 6 minutes, 26 seconds. The shortest day of the month is July 31, with 13 hours, 34 minutes of daylight and the longest day is July 1, with 14 hours, 2 minutes of daylight. The earliest sunrise of the month in Terrytown is 6:03 AM on July 1 and the latest sunrise is 16 minutes later at 6:19 AM on July 31. The latest sunset is 8:05 PM on July 1 and the earliest sunset is 12 minutes earlier at 7:53 PM on July 31. Daylight saving time is observed in Terrytown during 2024, but it neither starts nor ends during July, so the entire month is in standard time. For reference, on June 20, the longest day of the year, the Sun rises at 5:59 AM and sets 14 hours, 4 minutes later, at 8:04 PM, while on December 21, the shortest day of the year, it rises at 6:51 AM and sets 10 hours, 13 minutes later, at 5:05 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 Terrytown is essentially constant during July, remaining within 1% of 98% throughout. The highest chance of a muggy day during July is 99% on July 22. For reference, on July 22, the muggiest day of the year, there are muggy conditions 99% of the time, while on January 29, the least muggy day of the year, there are muggy conditions 5% 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 Terrytown is essentially constant during July, remaining within 0.2 miles per hour of 7.4 miles per hour throughout. For reference, on March 6, the windiest day of the year, the daily average wind speed is 11.1 miles per hour, while on August 7, the calmest day of the year, the daily average wind speed is 7.1 miles per hour. The wind direction in Terrytown during July is predominantly out of the south from July 1 to July 13 and the west from July 13 to July 31. Water TemperatureTerrytown 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 Terrytown is essentially constant during July, remaining around 85°F throughout. 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). While it does not do so every year, freezing temperatures are seen in Terrytown over some winters. The day least likely to be in the growing season is January 10, with a 50% chance. 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 Terrytown are very rapidly increasing during July, increasing by 963°F, from 3,310°F to 4,273°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 Terrytown is essentially constant during July, remaining within 0.2 kWh of 5.4 kWh throughout. TopographyFor the purposes of this report, the geographical coordinates of Terrytown are 29.910 deg latitude, -90.033 deg longitude, and 3 ft elevation. The topography within 2 miles of Terrytown is essentially flat, with a maximum elevation change of 7 feet and an average elevation above sea level of 3 feet. Within 10 miles is essentially flat (276 feet). Within 50 miles contains only modest variations in elevation (827 feet). The area within 2 miles of Terrytown is covered by artificial surfaces (88%), within 10 miles by herbaceous vegetation (50%) and artificial surfaces (38%), and within 50 miles by herbaceous vegetation (49%) and water (37%). Data SourcesThis report illustrates the typical weather in Terrytown, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Terrytown. For each station, the records are corrected for the elevation difference between that station and Terrytown 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 Terrytown is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Terrytown 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 Terrytown 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. |