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Glenmont, MD

Full City Profile · Maryland · Montgomery County County

3.5 /5.0
B+ Good
16,529 Population 5,903/sq mi density
$115,058 Median Income $48,491 per capita
$542,300 Home Value $793,313 Zillow
$1,959 Median Rent 35.4% income on rent
56°F Avg Temperature 293 sunny days/yr
356 Violent Crime/100K 3,289 property/100K
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$115,058 median income, 4.5% unemployment
A
Affordability
4.0 / 5.0
$542,300 home value, $1,959/mo rent
F
Safety
1.0 / 5.0
356 violent crimes/100K
A+
Education
4.6 / 5.0
44.4% bachelor's degree or higher
Glenmont enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 35°F in January while summers reach 78°F in July. The area gets 293 sunny days per year. Annual precipitation totals 41.3 inches. Air quality is rated Good with a median AQI of 41.

Temperature

35°F Jan (1°C) 78°F Jul (26°C)
Annual Average56.2°F
4% above US avg
January Average35°F (1°C)
July Average78°F (26°C)
Sunny Days293 days/yr

Geography

Elevation381 ft (116 m)
Area2.8 sq mi (7.3 km²)
Population Density5,903/sq mi
Coordinates39.0704°N, 77.0466°W
TimezoneAmerica/New_York
CountyMontgomery County County
Nearest AirportRonald Reagan Washington Ntl (DCA)
15 miles away

Precipitation & Snow

Annual Rainfall 41.3"
9% above US avg
Wettest Month (May) 4.37"
Driest Month (Feb) 2.83"

Air Quality

AQI Median41.0
RatingGood

Air Pollutants (EPA 2023)

Ozone (O₃)0.0449 ppm
PM2.5 (Fine Particles)6.3 μg/m³

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score91.7 / 100
Social Vulnerability19.9 / 100
Community Resilience63.6 / 100

Hazard Breakdown

Tornado Relatively Moderate
Hurricane Relatively Moderate
Earthquake Relatively Moderate
Wildfire Very Low
Flood Relatively High
Hail Relatively High
Strong Wind Relatively High
Heat Wave Relatively High
Winter Weather Very High
Lightning Relatively High
Ice Storm Relatively Moderate
Drought Relatively Moderate
Cold Wave Relatively Moderate
Landslide Relatively Low
Coastal Flood Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

29 earthquakes (M2.5+) within 150 km since 1990. Strongest: M4.5. Most recent: M2.6 on Jun 25, 2021.

Aug 25, 2011 8 km SW of Mineral, Virginia M4.5 148 km
Jul 16, 2010 5 km NNW of Barnesville, Maryland M3.6 38 km
Sep 1, 2011 7 km SSW of Mineral, Virginia M3.4 147 km
Oct 23, 1990 3 km W of Hancocks Bridge, New Jersey M3.2 141 km
Jan 30, 2012 9 km SSE of Louisa, Virginia M3.1 149 km
Jun 3, 2010 4 km ENE of Franklintown, Pennsylvania M3.1 113 km
Jan 17, 2016 3 km NE of Ranson, West Virginia M3.0 73 km
Oct 12, 2011 9 km S of Louisa, Virginia M3.0 150 km
Oct 2, 2010 10 km NNW of Ashland, Virginia M3.0 142 km
Nov 14, 1997 0 km S of Rothsville, Pennsylvania M3.0 138 km
Apr 24, 2009 1 km S of Franklintown, Pennsylvania M2.9 111 km
Sep 15, 2019 5 km ESE of East Berlin, Pennsylvania M2.8 96 km
Aug 23, 2011 9 km SSW of Mineral, Virginia M2.8 149 km
Mar 15, 2015 6 km SW of Mineral, Virginia M2.8 146 km
Jul 1, 2009 3 km ESE of Pennsville, New Jersey M2.8 149 km
Oct 25, 2009 4 km ENE of Franklintown, Pennsylvania M2.8 114 km
Mar 11, 1995 0 km ENE of Landisville, Pennsylvania M2.7 127 km
Oct 28, 1994 1 km E of Mount Vernon, Maryland M2.7 46 km
Mar 15, 1993 5 km W of Columbia, Maryland M2.7 22 km
Aug 25, 2011 7 km SE of Mineral, Virginia M2.6 143 km
Source: USGS (M2.5+, 1990-2025)

Hurricane History

5 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 2. Most recent: Irene (2011, Cat 1).

Year Name Category Closest
2011 Irene Category 1 208 km
2003 Isabel Category 1 270 km
1999 Floyd Category 1 266 km
1986 Charley Category 1 246 km
1985 Gloria Category 2 233 km
Source: NOAA IBTrACS (Cat 1+, 1980-2026)

Tornado History

494 tornadoes (EF0+) within 100 km since 1950. Strongest: EF4. Total: 9 fatalities, 371 injuries.

Date Rating Distance Fatalities
Apr 28, 2002 EF4 59 km 3
Sep 24, 2001 EF4 98 km 0
Sep 17, 2004 EF3 90 km 0
Apr 28, 2002 EF3 97 km 0
Sep 24, 2001 EF3 17 km 2
Jul 19, 1996 EF3 48 km 0
May 22, 1983 EF3 72 km 0
Jun 7, 1980 EF3 96 km 0
Sep 5, 1979 EF3 32 km 1
Jan 26, 1978 EF3 67 km 1
Apr 1, 1973 EF3 39 km 0
Jun 9, 1961 EF3 40 km 0
Apr 5, 1952 EF3 81 km 0
Sep 1, 2021 EF2 46 km 0
Nov 2, 2018 EF2 33 km 0
Jul 23, 2017 EF2 62 km 0
May 8, 2008 EF2 89 km 0
Sep 18, 2004 EF2 91 km 0
Sep 17, 2004 EF2 74 km 0
Sep 17, 2004 EF2 81 km 0
Source: NOAA SPC (EF0+, 1950-2024)

Wildfire History

1 wildfire (100+ acres) within 100 km. Largest: NCO (816 ac, 1999).

Year Name Acres Distance
1999 NCO 816 65 km
Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 35°F (1°C) 3.1 in Coldest
February 35°F (2°C) 2.8 in Driest
March 44°F (7°C) 3.7 in
April 54°F (12°C) 3.4 in
May 64°F (18°C) 4.4 in Wettest
June 72°F (22°C) 3.7 in
July 78°F (26°C) 4.0 in Warmest
August 75°F (24°C) 3.8 in
September 68°F (20°C) 3.9 in
October 57°F (14°C) 3.4 in
November 47°F (8°C) 3.5 in
December 38°F (3°C) 3.3 in

Glenmont has a seasonal temperature swing of 44°F / from 35°F in January to 78°F in July. Total annual precipitation is 42.9 inches, with May being the wettest month (4.4") and February the driest (2.8").

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