Average Weather in November in Lewes Delaware, United States
Daily high temperatures decrease by 9°F, from 62°F to 53°F, rarely falling below 41°F or exceeding 72°F.
Daily low temperatures decrease by 8°F, from 47°F to 39°F, rarely falling below 28°F or exceeding 58°F.
For reference, on July 21, the hottest day of the year, temperatures in Lewes typically range from 71°F to 84°F, while on January 30, the coldest day of the year, they range from 29°F to 43°F.
Average High and Low Temperature in November
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on November. 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 November
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
The month of November in Lewes experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 41% to 46%.
The clearest day of the month is November 1, with clear, mostly clear, or partly cloudy conditions 59% of the time.
For reference, on January 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 50%, while on October 12, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 64%.
Cloud Cover Categories in November
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 Lewes, the chance of a wet day over the course of November is increasing, starting the month at 23% and ending it at 27%.
For reference, the year's highest daily chance of a wet day is 38% on August 7, and its lowest chance is 21% on October 20.
Over the course of November in Lewes, the chance of a day with only rain increases from 23% to 26%, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 0% throughout.
Probability of Precipitation in November
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 November in Lewes is essentially constant, remaining about 3.3 inches throughout, and rarely exceeding 6.3 inches or falling below 0.7 inches.
Average Monthly Rainfall in November
Over the course of November in Lewes, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 52 minutes, implying an average daily decrease of 1 minute, 48 seconds, and weekly decrease of 12 minutes, 37 seconds.
The shortest day of the month is November 30, with 9 hours, 41 minutes of daylight and the longest day is November 1, with 10 hours, 33 minutes of daylight.
Hours of Daylight and Twilight in November
The latest sunrise of the month in Lewes is 7:28 AM on November 2 and the earliest sunrise is 59 minutes earlier at 6:29 AM on November 3.
The latest sunset is 6:00 PM on November 1 and the earliest sunset is 1 hour, 21 minutes earlier at 4:39 PM on November 30.
Daylight saving time (DST) ends at 1:00 AM on November 3, 2019, shifting sunrise and sunset to be an hour earlier.
For reference, on June 21, the longest day of the year, the Sun rises at 5:35 AM and sets 14 hours, 53 minutes later, at 8:28 PM, while on December 22, the shortest day of the year, it rises at 7:15 AM and sets 9 hours, 27 minutes later, at 4:42 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in November
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 Lewes is gradually decreasing during November, falling from 2% to 0% over the course of the month.
For reference, on August 2, the muggiest day of the year, there are muggy conditions 74% of the time, while on January 9, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in November
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 Lewes is gradually increasing during November, increasing from 13.1 miles per hour to 13.7 miles per hour over the course of the month.
For reference, on January 13, the windiest day of the year, the daily average wind speed is 14.3 miles per hour, while on July 26, the calmest day of the year, the daily average wind speed is 8.7 miles per hour.
Average Wind Speed in November
Wind Direction in November
Lewes 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 Lewes is rapidly decreasing during November, falling by 8°F, from 60°F to 51°F, over the course of the month.
Average Water Temperature in November
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).
The growing season in Lewes typically lasts for 7.8 months (239 days), from around March 26 to around November 20, rarely starting before March 10 or after April 11, and rarely ending before November 2 or after December 8.
During November in Lewes, the chance that a given day is within the growing season is very rapidly decreasing falling from 91% to 23% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in November
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 Lewes are gradually increasing during November, increasing by 112°F, from 3,776°F to 3,888°F, over the course of the month.
Growing Degree Days in November
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 Lewes is gradually decreasing during November, falling by 0.9 kWh, from 3.2 kWh to 2.3 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in November
For the purposes of this report, the geographical coordinates of Lewes are 38.775 deg latitude, -75.139 deg longitude, and 3 ft elevation.
The topography within 2 miles of Lewes is essentially flat, with a maximum elevation change of 26 feet and an average elevation above sea level of 7 feet. Within 10 miles is also essentially flat (59 feet). Within 50 miles is essentially flat (131 feet).
The area within 2 miles of Lewes is covered by cropland (28%), artificial surfaces (28%), and water (28%), within 10 miles by water (57%) and cropland (22%), and within 50 miles by water (49%) and cropland (24%).
This report illustrates the typical weather in Lewes 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Lewes.
For each station, the records are corrected for the elevation difference between that station and Lewes 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 Lewes is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Lewes and a given station.
The stations contributing to this reconstruction are: Sussex County Airport (48%, 22 kilometers, southwest); Cape May County Airport (25%, 33 kilometers, northeast); Dover Air Force Base (14%, 49 kilometers, northwest); and Ocean City Municipal Airport (13%, 52 kilometers, south).
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.