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Average Weather in Montgomery Village Maryland, United States

In Montgomery Village, the summers are warm and humid, the winters are very cold and windy, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 24°F to 86°F and is rarely below 11°F or above 94°F.

Based on the tourism score, the best times of year to visit Montgomery Village for warm-weather activities are from early June to early July and from late July to late September.

Climate Summary

very coldcoldcoolwarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDec66%66%48%48%clearovercastprecipitation: 3.6 inprecipitation: 3.6 in2.4 in2.4 inmuggy: 63%muggy: 63%0%0%drydrytourism score: 6.5tourism score: 6.50.20.2
Click on each chart for more information.

Temperature

The hot season lasts for 3.6 months, from May 29 to September 16, with an average daily high temperature above 77°F. The hottest day of the year is July 21, with an average high of 86°F and low of 66°F.

The cold season lasts for 3.1 months, from December 2 to March 4, with an average daily high temperature below 50°F. The coldest day of the year is January 30, with an average low of 24°F and high of 41°F.

Average High and Low Temperature

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 figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature

Average Hourly Temperature in Montgomery VillageJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMfreezingvery coldvery coldcoldcoldcoolcoolcomfortablewarmfreezingfreezing
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 average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Chochkan, Armenia (5,802 miles away) is the far-away foreign place with temperatures most similar to Montgomery Village (view comparison).

Clouds

In Montgomery Village, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.

The clearer part of the year in Montgomery Village begins around June 27 and lasts for 4.5 months, ending around November 12. On September 4, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 66% of the time, and overcast or mostly cloudy 34% of the time.

The cloudier part of the year begins around November 12 and lasts for 7.5 months, ending around June 27. On January 11, the cloudiest day of the year, the sky is overcast or mostly cloudy 52% of the time, and clear, mostly clear, or partly cloudy 48% of the time.

Cloud Cover Categories

Cloud Cover Categories in Montgomery VillageclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Sep 466%Sep 466%Jan 1148%Jan 1148%Jun 2756%Jun 2756%Nov 1257%Nov 1257%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Montgomery Village varies throughout the year.

The wetter season lasts 4.8 months, from April 2 to August 27, with a greater than 29% chance of a given day being a wet day. The chance of a wet day peaks at 39% on June 17.

The drier season lasts 7.2 months, from August 27 to April 2. The smallest chance of a wet day is 20% on October 20.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 39% on June 17.

Daily Chance of Precipitation

Daily Chance of Precipitation in Montgomery VillagewetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jun 1739%Jun 1739%Oct 2020%Oct 2020%Jan 121%Jan 121%Apr 229%Apr 229%Aug 2729%Aug 2729%rainmixed
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).

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Montgomery Village experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Montgomery Village. The most rain falls during the 31 days centered around May 22, with an average total accumulation of 3.6 inches.

The least rain falls around January 29, with an average total accumulation of 1.7 inches.

Average Monthly Rainfall

Average Monthly Rainfall in Montgomery VillageJanFebMarAprMayJunJulAugSepOctNovDec0 in1 in2 in3 in4 in5 in6 in7 inMay 223.6 inMay 223.6 inJan 291.7 inJan 291.7 inSep 293.4 inSep 293.4 in
The average rainfall (solid line) accumulated over the course of a sliding 31-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 liquid-equivalent snowfall.

Snowfall

We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. 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. Montgomery Village experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 4.4 months, from November 17 to March 30, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around February 3, with an average total liquid-equivalent accumulation of 0.8 inches.

The snowless period of the year lasts for 7.6 months, from March 30 to November 17. The least snow falls around July 19, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall in Montgomery VillagesnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in1 in2 in3 in4 inFeb 30.8 inFeb 30.8 inJul 190.0 inJul 190.0 inNov 170.1 inNov 170.1 inMar 300.1 inMar 300.1 in
The average liquid-equivalent snowfall (solid line) accumulated over the course of a sliding 31-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 rainfall.

Sun

The length of the day in Montgomery Village varies significantly over the course of the year. In 2018, the shortest day is December 21, with 9 hours, 25 minutes of daylight; the longest day is June 21, with 14 hours, 56 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in Montgomery VillageJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 9 minMar 2012 hr, 9 minMar 2014 hr, 56 minJun 2114 hr, 56 minJun 2112 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 25 minDec 219 hr, 25 minDec 21nightnightday
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.

The earliest sunrise is at 5:41 AM on June 14, and the latest sunrise is 1 hour, 57 minutes later at 7:38 AM on November 3. The earliest sunset is at 4:45 PM on December 7, and the latest sunset is 3 hours, 53 minutes later at 8:39 PM on June 27.

Daylight saving time (DST) is observed in Montgomery Village during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time in Montgomery VillageJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 145:41 AMJun 145:41 AM8:39 PMJun 278:39 PMJun 27Dec 74:45 PMDec 74:45 PM7:38 AMNov 37:38 AMNov 3Mar 11DSTMar 11DSTDSTNov 4DSTNov 4daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2018. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Humidity

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.

Montgomery Village experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 4.0 months, from May 25 to September 25, during which time the comfort level is muggy, oppressive, or miserable at least 16% of the time. The muggiest day of the year is July 20, with muggy conditions 63% of the time.

The least muggy day of the year is February 19, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels in Montgomery VillagemuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Feb 190%Feb 190%Jul 2063%Jul 2063%May 2516%May 2516%Sep 2516%Sep 2516%oppressiveoppressivemuggymuggydrydryhumidhumidcomfortablecomfortablemiserablemiserable
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

Wind

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 Montgomery Village experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.5 months, from October 25 to May 9, with average wind speeds of more than 8.0 miles per hour. The windiest day of the year is February 26, with an average hourly wind speed of 10.0 miles per hour.

The calmer time of year lasts for 5.5 months, from May 9 to October 25. The calmest day of the year is August 1, with an average hourly wind speed of 6.0 miles per hour.

Average Wind Speed

Average Wind Speed in Montgomery VillagewindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph2 mph4 mph6 mph8 mph10 mph12 mph14 mph16 mphFeb 2610.0 mphFeb 2610.0 mphAug 16.0 mphAug 16.0 mphOct 258.0 mphOct 258.0 mphMay 98.0 mphMay 98.0 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Montgomery Village varies throughout the year.

The wind is most often from the north for 1.0 weeks, from March 13 to March 20, with a peak percentage of 31% on March 13. The wind is most often from the west for 1.7 months, from March 20 to May 10; for 1.5 months, from June 12 to July 26; and for 5.2 months, from October 7 to March 13, with a peak percentage of 37% on July 6. The wind is most often from the south for 1.1 months, from May 10 to June 12 and for 2.4 months, from July 26 to October 7, with a peak percentage of 34% on August 16.

Wind Direction

Wind Direction in Montgomery VillageWWSWSWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westsouthnortheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Montgomery Village 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 water temperature experiences extreme seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.3 months, from June 23 to October 2, with an average temperature above 69°F. The day of the year with the warmest water is August 12, with an average temperature of 77°F.

The time of year with cooler water lasts for 3.5 months, from December 20 to April 6, with an average temperature below 44°F. The day of the year with the coolest water is February 7, with an average temperature of 36°F.

Average Water Temperature

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is in Montgomery Village throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit Montgomery Village 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.

Tourism Score

Tourism Score in Montgomery Villagebest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.56.50.20.26.06.0 precipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Montgomery Village for hot-weather activities is from late June to late August, with a peak score in the last week of July.

Beach/Pool Score

Beach/Pool Score in Montgomery Villagebest timeJanFebMarAprMayJunJulAugSepOctNovDec02468105.75.70.00.0 precipitationprecipitationcloudscloudstemperaturetemperaturebeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), 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 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Growing Season

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 Montgomery Village typically lasts for 6.4 months (195 days), from around April 12 to around October 23, rarely starting before March 25 or after May 6, and rarely ending before October 4 or after November 11.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Montgomery Villagegrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 1250%Apr 1250%Oct 2350%Oct 2390%May 690%May 690%Oct 490%Oct 410%Mar 2510%Mar 2510%Nov 1110%Nov 110%Dec 140%Dec 14Jul 25100%Jul 25100%freezingvery coldcomfortablewarmcoolhotcoldfrigid
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 percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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.

Based on growing degree days alone, the first spring blooms in Montgomery Village should appear around March 26, only rarely appearing before March 10 or after April 11.

Growing Degree Days

Growing Degree Days in Montgomery VillageJanFebMarAprMayJunJulAugSepOctNovDec0°F500°F1,000°F1,500°F2,000°F2,500°F3,000°F3,500°F4,000°FMar 2687°FMar 2687°FJun 10900°FJun 10900°FJul 191,800°FJul 191,800°FDec 313,704°FDec 313,704°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 3.8 months, from April 28 to August 23, with an average daily incident shortwave energy per square meter above 5.9 kWh. The brightest day of the year is June 23, with an average of 6.9 kWh.

The darker period of the year lasts for 3.1 months, from November 6 to February 9, with an average daily incident shortwave energy per square meter below 3.0 kWh. The darkest day of the year is December 23, with an average of 2.0 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in Montgomery VillagebrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhJun 236.9 kWhJun 236.9 kWhDec 232.0 kWhDec 232.0 kWhApr 285.9 kWhApr 285.9 kWhAug 235.9 kWhAug 235.9 kWhFeb 93.0 kWhFeb 93.0 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Montgomery Village are 39.177 deg latitude, -77.195 deg longitude, and 456 ft elevation.

The topography within 2 miles of Montgomery Village contains only modest variations in elevation, with a maximum elevation change of 276 feet and an average elevation above sea level of 430 feet. Within 10 miles contains only modest variations in elevation (735 feet). Within 50 miles contains significant variations in elevation (2,198 feet).

The area within 2 miles of Montgomery Village is covered by artificial surfaces (75%) and trees (24%), within 10 miles by trees (40%) and cropland (32%), and within 50 miles by trees (37%) and cropland (36%).

Data Sources

This report illustrates the typical weather in Montgomery Village, 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 Montgomery Village.

For each station, the records are corrected for the elevation difference between that station and Montgomery Village 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 Montgomery Village is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Montgomery Village and a given station.

The stations contributing to this reconstruction are: Montgomery County Airpark (90%, 2.7 kilometers, southeast); Frederick Municipal Airport (3.5%, 31 kilometers, northwest); Leesburg Executive Airport (3.3%, 33 kilometers, west); and Washington Dulles International Airport (3.0%, 35 kilometers, southwest).

Other Data

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.

Disclaimer

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.