Based on this score, the best time of year to visit Baltimore for general outdoor tourist activities is from mid August to early October , with a peak score in the first week of September.
Based on this score, the best time of year to visit Baltimore for hot-weather activities is from late June to early September , with a peak score in the second week of August. 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 Baltimore typically lasts for 8. 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 Baltimore should appear around March 20 , only rarely appearing before March 3 or after April 7.
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.
The brighter period of the year lasts for 3. The brightest month of the year in Baltimore is June , with an average of 6. The darker period of the year lasts for 3. The darkest month of the year in Baltimore is December , with an average of 2. For the purposes of this report, the geographical coordinates of Baltimore are The topography within 2 miles of Baltimore contains only modest variations in elevation, with a maximum elevation change of feet and an average elevation above sea level of 64 feet.
Within 10 miles contains only modest variations in elevation feet. Within 50 miles contains significant variations in elevation 1, feet. This report illustrates the typical weather in Baltimore, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, to December 31, There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Baltimore.
For each station, the records are corrected for the elevation difference between that station and Baltimore 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 Baltimore is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Baltimore and a given station.
To get a sense of how much these sources agree with each other, you can view a comparison of Baltimore 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. 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.
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For print usage, please acquire a license. Full Year. Spring Summer Fall Winter. Climate in Baltimore Link. History: Baltimore weather by month. 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.
The thin dotted lines are the corresponding average perceived temperatures. Average Hourly Temperature in Baltimore Link. The average hourly temperature, color coded into bands. The month with the most muggy days in Maryland City is July , with The month with the fewest muggy days in Maryland City 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 Maryland City experiences significant seasonal variation over the course of the year. The windier part of the year lasts for 6. The windiest month of the year in Maryland City is March , with an average hourly wind speed of The calmer time of year lasts for 5. The calmest month of the year in Maryland City is July , with an average hourly wind speed of 6. The wind is most often from the north for 2. The wind is most often from the west for 1. The wind is most often from the south for 1.
Maryland City 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 extreme 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 Maryland City throughout the year, we compute two travel scores. Based on this score, the best times of year to visit Maryland City for general outdoor tourist activities are from early June to early July and from late July to late September , with a peak score in the first week of September.
Based on this score, the best time of year to visit Maryland City for hot-weather activities is from late June to early September , with a peak score in the third week of July.
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 Maryland City typically lasts for 6. 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 Maryland City should appear around March 24 , only rarely appearing before March 8 or after April 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. The brighter period of the year lasts for 3.
The brightest month of the year in Maryland City is June , with an average of 6. The darker period of the year lasts for 3. The darkest month of the year in Maryland City is December , with an average of 2. For the purposes of this report, the geographical coordinates of Maryland City are The topography within 2 miles of Maryland City contains only modest variations in elevation, with a maximum elevation change of feet and an average elevation above sea level of feet.
Within 10 miles contains only modest variations in elevation feet. Within 50 miles contains significant variations in elevation 1, feet. This report illustrates the typical weather in Maryland City, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, to December 31, There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Maryland City.
For each station, the records are corrected for the elevation difference between that station and Maryland City 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 Maryland City is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Maryland City and a given station. To get a sense of how much these sources agree with each other, you can view a comparison of Maryland City 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. All data relating to the Sun's position e. The best time to visit Maryland is from May to September when the ground is free from snow and ice. Late spring has milder temperatures than the summer, but numerous festivals make accommodations costlier, and students swell visitor numbers during spring break. Early spring has fewer crowds and cheap flights. Summer tends to be hot and humid, with long daylight hours and bright sunshine.
June and July see the peak of the tourist season with many families in vacation mood. Early fall has mild temperatures and is a great time to witness the changing leaves. The worst time to visit Maryland is during the chilly winter season from December to February.
Late fall brings cold but sees many visitors who wish to experience the scenic landscape bathed in different colors. Winter accumulates plenty of snow in the western portion of the state, particularly the highlands, while snowfall occurs routinely in the rest of the state.
Blizzards occasionally occur to cause damage to property and stall everyday life. The roads are icy and filled with slush, a mixture of snow and ice that makes driving hazardous.
Maryland is vulnerable to tropical cyclones due to its proximity to the Atlantic Ocean, but they seldom have strength above EF3. Storms that approach from the Gulf of Mexico or the southeastern United States bring adverse weather.
Six tornadoes on an average strike the state each year. Thunderstorms are frequent in late spring and summer and occur on 30 to 40 days annually. Strong easterly and northeasterly winds, high tides and torrential rain are the features of these nor'easter storms. Hailstorms rarely occur, while flooding is common upstream of the Potomac River due to heavy rain during storms in the summer and fall.
Blizzards are common in the winter and stall several parts of Maryland. January is by far the coldest and snowiest month of the year in Maryland as the temperatures race towards the bottom. January sees 5" mm to 10" mm of snow everywhere except the coast and deposits of 20" mm and above are standard in the mountains.
Head towards the western mountains for skiing, snowboarding, and snowshoeing. Outdoor ice skating rinks are available throughout the state. Winter is an off-season with raining discounts on flights and hotel accommodations. Fewer crowds offer unobstructed views of the panoramic mountains, while the beaches on the eastern shore offer plenty of space for walking.
Pack in layers with a winter coat to encounter the icy precipitation. Expect moderate sunshine for a few hours during the day as the skies are mostly dark in January in Maryland.
February has occasional nights that are above freezing, but the cold winter season is very much alive in Maryland. Mountains resist the icy blast of the arctic air and are responsible for the relatively warmer temperatures on their eastern slopes. Heaters run all the time everywhere, from groceries and libraries to schools and offices. The western Maryland scenic railroad with steam-engine powered trains on the narrow, snow-scattered tracks seems to be straight on the way to Hogwarts.
The usually crowded Chesapeake Beach is peaceful during the winter with fewer crowds. Sledding and snow tubing are popular with plenty of rolling hills in the state.
A cozy cabin with snow falling steadily in the background and a hot chocolate in hand is a dream come true for many. Snowstorms frequently occur in Maryland in February, and blizzards deposit vast amounts of snow. March is cold in Maryland as early spring spreads its wings over the landscape.
The skies are partly cloudy, but there are clear signs of the change in seasons. The days grow long, and the sun smiles for 5 to 6 hours. The precipitation is to the tune of 3" Snowfall is drastically less and limits to 5" mm in the plains.
Frequent cold and warm weather spells keep the conditions unpredictable. It is prudent to carry a light rain jacket in Maryland during spring. Fresh and beautiful mornings can quickly descend into gloominess that as rapidly change into sunny afternoons. The countryside is a combination of white, brown, and green colors. Black-eyed susans grow everywhere without restrictions.
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