Frost Dates for Chevy Chase, DC

Based on data from Dalecarlia Rsvr weather station, 3 miles away

Elevation: 331 ft

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. April 9
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. October 31

30% Probability

Only a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.
Last Spring Frost April 16
First Fall Frost October 25

Hard Freeze (28°F)

Last Spring Hard Freeze March 30
First Fall Hard Freeze November 9
38.98°N, 77.08°W © OpenStreetMap

Growing Season

205 Days April 9 to October 31

USDA Hardiness Zone

Hardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.
Zone 7b

Avg. annual minimum: 5 to 10°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Cfa Humid Subtropical

Hot, humid summers and mild winters with rain year-round. Long growing seasons support a wide variety of vegetables, fruits, and ornamentals. The most common climate in the eastern US.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January43°34°26°
February46°37°27°
March55°44°34°
April68°56°44°
May76°65°54°
June84°73°63°
July88°78°68°
August86°76°66°
September79°69°59°
October68°57°47°
November56°46°36°
December47°38°30°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January4.7
February4.5
March5.5
April5.3
May7.1
June6.8
July7.5
August6.5
September5.7
October5.0
November4.9
December5.0

Sunrise / Sunset

Daylight Eastern Time (ET) Longest: 14h 44m · Shortest: 9h 16m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Eastern Time (ET))
Month Sunrise Sunset Daylight
January7:31 AM5:04 PM9h 33m
February7:07 AM5:39 PM10h 32m
March7:27 AM7:09 PM11h 42m
April6:38 AM7:39 PM13h 02m
May6:01 AM8:09 PM14h 08m
June5:47 AM8:30 PM14h 43m
July5:60 AM8:28 PM14h 29m
August6:27 AM7:58 PM13h 31m
September6:56 AM7:10 PM12h 14m
October7:25 AM6:22 PM10h 57m
November6:59 AM4:48 PM9h 50m
December7:26 AM4:43 PM9h 17m

Nearby Stations

Washington Reagan AP, VA March 24 - November 18 Natl Arboretum Dc, MD March 29 - November 8 Vienna, VAApril 14 - October 29 Rockville 1 Ne, MD April 1 - November 6 Beltsville, MD April 10 - November 1 Oxon Hill, MDApril 3 - November 8

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