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Derwood, MD

Full City Profile · Maryland · Montgomery County County

3.7 /5.0
B+ Good
1,830 Population 2,905/sq mi density
$93,000 Median Income $62,033 per capita
$633,200 Home Value $627,264 Zillow
$2,200 Median Rent 28.4% income on rent
56°F Avg Temperature 293 sunny days/yr
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$93,000 median income, 3.8% unemployment
C+
Affordability
2.8 / 5.0
$633,200 home value, $2,200/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
A+
Education
5.0 / 5.0
60.5% bachelor's degree or higher
Derwood 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

Elevation437 ft (133 m)
Area0.6 sq mi (1.6 km²)
Population Density2,905/sq mi
Coordinates39.1141°N, 77.1502°W
TimezoneAmerica/New_York
CountyMontgomery County County
Nearest AirportRonald Reagan Washington Ntl (DCA)
19 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

30 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 28 km
Jun 13, 2019 9 km N of Blain, Pennsylvania M3.4 149 km
Sep 1, 2011 7 km SSW of Mineral, Virginia M3.4 146 km
Oct 23, 1990 3 km W of Hancocks Bridge, New Jersey M3.2 148 km
Jan 30, 2012 9 km SSE of Louisa, Virginia M3.1 149 km
Jun 3, 2010 4 km ENE of Franklintown, Pennsylvania M3.1 109 km
Jan 17, 2016 3 km NE of Ranson, West Virginia M3.0 63 km
Nov 14, 1997 0 km S of Rothsville, Pennsylvania M3.0 138 km
Oct 2, 2010 10 km NNW of Ashland, Virginia M3.0 144 km
Oct 12, 2011 9 km S of Louisa, Virginia M3.0 149 km
Apr 24, 2009 1 km S of Franklintown, Pennsylvania M2.9 106 km
Sep 15, 2019 5 km ESE of East Berlin, Pennsylvania M2.8 93 km
Mar 15, 2015 6 km SW of Mineral, Virginia M2.8 146 km
Aug 23, 2011 9 km SSW of Mineral, Virginia M2.8 148 km
Oct 25, 2009 4 km ENE of Franklintown, Pennsylvania M2.8 110 km
Oct 28, 1994 1 km E of Mount Vernon, Maryland M2.7 52 km
Mar 11, 1995 0 km ENE of Landisville, Pennsylvania M2.7 127 km
Mar 15, 1993 5 km W of Columbia, Maryland M2.7 26 km
Aug 29, 2011 10 km S of Louisa, Virginia M2.7 150 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 1 218 km
2003 Isabel Category 1 273 km
1999 Floyd Category 1 273 km
1986 Charley Category 1 256 km
1985 Gloria Category 2 243 km
Source: NOAA IBTrACS (Cat 1+, 1980-2026)

Tornado History

488 tornadoes (EF0+) within 100 km since 1950. Strongest: EF4. Total: 9 fatalities, 379 injuries.

Date Rating Distance Fatalities
Apr 28, 2002 EF4 63 km 3
Sep 24, 2001 EF4 94 km 0
Sep 17, 2004 EF3 87 km 0
Sep 24, 2001 EF3 25 km 2
Jul 19, 1996 EF3 45 km 0
May 22, 1983 EF3 66 km 0
Jun 7, 1980 EF3 91 km 0
Sep 5, 1979 EF3 38 km 1
Jan 26, 1978 EF3 70 km 1
Apr 1, 1973 EF3 38 km 0
Jun 9, 1961 EF3 47 km 0
Apr 5, 1952 EF3 78 km 0
Sep 1, 2021 EF2 56 km 0
Nov 2, 2018 EF2 26 km 0
Jul 23, 2017 EF2 71 km 0
May 8, 2008 EF2 90 km 0
Sep 18, 2004 EF2 94 km 0
Sep 17, 2004 EF2 39 km 0
Sep 17, 2004 EF2 60 km 0
Sep 17, 2004 EF2 69 km 0
Source: NOAA SPC (EF0+, 1950-2024)

Wildfire History

2 wildfires (100+ acres) within 100 km. Largest: SMITH RUN FIRE (1,908 ac, 2011).

Year Name Acres Distance
2011 SMITH RUN FIRE 1,908 95 km
1999 NCO 816 66 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

Derwood 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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