Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data. All data relating to the Sun's position e.
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 kilometer grid. 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. 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. Please review our full terms contained on our Terms of Service page. You're permitted to use this graph as long as you provide prominent attribution with a link back close to the use of the graph.
For print usage, please acquire a license. Full Year. Spring Summer Fall Winter. History: The daily average high red line and low blue line temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures. The average hourly temperature, color coded into bands.
The shaded overlays indicate night and civil twilight. Compare Williamsburg to another city:. The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. Probability of Precipitation in April in Williamsburg Spring.
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed both rain and snow fell in the same day. The average rainfall solid line accumulated over the course of a sliding day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands.
The thin dotted line is the corresponding average snowfall. The number of hours during which the Sun is visible black line. From bottom most yellow to top most gray , the color bands indicate: full daylight, twilight civil, nautical, and astronomical , and full night.
Weather is too cold this time of year in Williamsburg to be enjoyable for warm weather travelers. The average high during this season is between On average, it rains or snows a fair amount: 5 to 7 times per month. These times of year are the slowest with tourists. Other Williamsburg Travel Info.
Williamsburg Temperatures Fahrenheit. Williamsburg Temperatures Celsius. Williamsburg Perceived Temperature F. Williamsburg Perceived Temperature C. Show Fahrenheit Month Avg. Show Celsius Month Avg. Snow on the Ground The graph below shows the average snow on the ground in Williamsburg in. Wind The graph below shows wind speed max and average in knots. Show Wind Speeds All wind speeds are in knots.
Month Avg. Wind Avg. Relative Humidity Jan Most Popular Months to Visit. Tourism graph is based on Google searches for services used by tourists relative to the rest of the year.
Tourism data for this area is slightly extrapolated based on nearby areas. The month with the least rain in Williamsburg is February , with an average rainfall of 2. As with rainfall, we consider the snowfall accumulated over a sliding day period centered around each day of the year. Williamsburg experiences some seasonal variation in monthly snowfall. The snowy period of the year lasts for 2. The month with the most snow in Williamsburg is February , with an average snowfall of 2.
The snowless period of the year lasts for 9. The least snow falls around July 17 , with an average total accumulation of 0. The length of the day in Williamsburg varies significantly over the course of the year. In , the shortest day is December 21 , with 9 hours, 36 minutes of daylight; the longest day is June 20 , with 14 hours, 44 minutes of daylight.
The earliest sunrise is at AM on June 13 , and the latest sunrise is 1 hour, 51 minutes later at AM on November 6. The earliest sunset is at PM on December 5 , and the latest sunset is 3 hours, 42 minutes later at PM on June Daylight saving time DST is observed in Williamsburg during , starting in the spring on March 14 , lasting 7. The figure below presents a compact representation of key lunar data for 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. 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 muggier period of the year lasts for 4. The month with the most muggy days in Williamsburg is July , with The month with the fewest muggy days in Williamsburg is February , with 0. 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 Williamsburg experiences mild seasonal variation over the course of the year. The windier part of the year lasts for 6.
The windiest month of the year in Williamsburg is March , with an average hourly wind speed of 8. The calmer time of year lasts for 5. The calmest month of the year in Williamsburg is July , with an average hourly wind speed of 5. The wind is most often from the south for 4. The wind is most often from the east for 2. The wind is most often from the north for 6.
Williamsburg is located near a large body of water e. This section reports on the wide-area average surface temperature of that water. The average water temperature experiences significant seasonal variation over the course of the year. The time of year with warmer water lasts for 3. The time of year with cooler water lasts for 3. To characterize how pleasant the weather is in Williamsburg throughout the year, we compute two travel scores. Based on this score, the best times of year to visit Williamsburg for general outdoor tourist activities are for the entire month of May and from late August to mid October , with a peak score in the last week of September.
Based on this score, the best time of year to visit Williamsburg for hot-weather activities is from mid June to mid September , with a peak score in the first week of September. For each hour between AM and PM of each day in the analysis period to , independent scores are computed for perceived temperature, cloud cover, and total precipitation.
Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies. Our precipitation score , which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0. The growing season in Williamsburg typically lasts for 7. 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.
Based on growing degree days alone, the first spring blooms in Williamsburg should appear around February 19 , only rarely appearing before January 28 or after March 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 experiences significant seasonal variation over the course of the year.
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