The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. The.We report snowfall in liquid-equivalent terms. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year.
The annual precipitation totals are averages based on weather data collected from 1981 to 2010 for the NOAA National Climatic Data Center. Elsewhere, Hurricane Teddy will remain in the Atlantic, but bring dangerous rip currents, high surf, and swells to much of the East Coast. Chance of precipitation is 40%.A chance of showers. West wind 3 to 6 mph.Partly sunny, with a high near 80. The black line is the percentage chance that a given day is within the growing season.The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.Ronald Reagan Washington National Airport,MERRA-2 Modern-Era Retrospective Analysis. Shortwave radiation includes visible light and ultraviolet radiation.The average daily incident shortwave solar energy experiences.For the purposes of this report, the geographical coordinates of Bethesda are 38.981 deg latitude, -77.100 deg longitude, and 312 ft elevation.This report illustrates the typical weather in Bethesda, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Bethesda.For each station, the records are corrected for the elevation difference between that station and Bethesda according to the.The estimated value at Bethesda is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Bethesda and a given station.The stations contributing to this reconstruction are:All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book,All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's,Names, locations, and time zones of places and some airports come from the,Time zones for airports and weather stations are provided by.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. Mostly cloudy, with a low around 63. Sign up for our email newsletter by entering your email address. Chance of precipitation is 40%.6pm EDT Sep 22, 2020-6pm EDT Sep 29, 2020,Zone Area Forecast for Central and Southeast Montgomery, MD,Excessive Rainfall and Winter Weather Forecasts,Federal Emergency Management Agency (FEMA),National Oceanic and Atmospheric Administration. In this report, we use a base of,Based on growing degree days alone, the first spring blooms in Bethesda should appear around.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. View other Bethesda MD radar models including Long Range, Base, Composite, Storm Motion, Base Velocity, and 1 Hour Total; with the option of viewing animated radar loops in dBZ and Vcp measurements, for surrounding areas of Bethesda and overall Montgomery county, Maryland. Rainfall Totals Across Maryland On Saturday: Preliminary - Baltimore, MD - How much rain did Maryland get? 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.Click on each chart for more information.The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. Partly sunny, with a high near 74.