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Chevy Chase, Maryland Weather

Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →

Chevy Chase weather forecast — hour by hour, 7-day outlook, NOAA radar

Chevy Chase, MD
Saturday, July 4 at 5:48 PM
100
°
Mostly Clear
Feels like
103°
Humidity
33%
Wind
7 mph
Sunrise
1:48 AM
Sunset
4:37 PM
Chevy Chase, MD
Hour by hour · 24h
24-Hour ForecastChevy Chase, MD: 24-hour forecast. Temperatures range from 73 to 101 degrees Fahrenheit with a 31% chance of precipitation at 2 AM.
L 73°H 101°
Chevy Chase, MD
7-day forecast
  1. Today
    Jul 4
    Rain
    26%
    0.29″
    101°76°—
  2. Sunday
    Jul 5
    Light Rain
    49%
    0.09″
    97°73°-4°
  3. Monday
    Jul 6
    Heavy Drizzle
    80%
    0.04″
    85°74°-12°
  4. Tuesday
    Jul 7
    Thunderstorm
    80%
    0.58″
    89°71°+4°
  5. Wednesday
    Jul 8
    Light Rain
    38%
    0.11″
    76°70°-13°
  6. Thursday
    Jul 9
    Overcast
    11%
    —
    92°68°+16°
  7. Friday
    Jul 10
    Drizzle
    43%
    0.07″
    91°73°-1°
Chevy Chase, MD
Next 24 hours · Hot now
HOT 90°65°88°110°6p12a6a12pnow 101°high 101°low 73°PRECIP %
Chevy Chase, MD
Anemometer · 24h winds · from true
NESW
From · True
SW
222° · backing 59°
Direction
SW
222°
Sustained
7
mph
Gust
9
mph
Peak 24h
13
avg 4
Beaufort · 2 · LIGHT BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 4 · pk 13 @ 7:00p
010203040MPHB1B2B3B4B5B6B7B8-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 345SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Chevy Chase, MD
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1003.6
-2.1 mb in 3h · falling rapidly · 29.64 inHg
Now
1003.6
mb
3h
-2.1
mb
12h
-2.4
mb
24h
-2.5
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1003–1007
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR-21h-18h-15h-12h-9h-6h-3h-24hNOW1007.11003.41003.4
−24h−18h−12h−6hnow
Pressure giving way — clouds thicken and rain edges closer.
Chevy Chase, MD
Air quality
110
AQI
Unhealthy for Sensitive Groups
↑+54 in 6h

AQI 110 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 54 in the last 6 hours — air quality is degrading. Ozone at AQI 85 — peak already passed at 1 PM under clear skies. Levels should ease through evening.

CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.

PM 2.5Good
8.8μg/m³
PM 10Good
10μg/m³
NO₂Good
2μg/m³
OzoneDRIVERUnhealthy SG
128μg/m³
UV IndexModerate
2.5

What's driving it

Ozone × UV × Sky

Ozone at AQI 85 — peak already passed at 1 PM under clear skies. Levels should ease through evening.

Present
AQI 85
UV peak
2.1 at earlier today
Sky at peak
clear
Projected peak
AQI 85

PM × Wind × Precip

PM2.5 at 8.8 µg/m³, PM10 at 9.9 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.89
Wind
light
Recent rain
1h in last 6h
Pattern
background

Trends

Seven days of AQI and PM2.5.

Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).

7-DAY AQI TREND50100SATSUNMONTUEWEDTHUFRISAT7-DAY PM2.5 TREND · μg/m³400
Chevy Chase, MD
Sky cover · visibility · 24h
Cloud cover
26%
MOSTLY CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
109.1mi
UNLIMITED
108 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
21:48 UTC · Chevy Chase, MD · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
21:48 UTC · Chevy Chase, MD · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Chevy Chase, MD
Satellite · infrared · animated
Chevy Chase, MD
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Chevy Chase, MD
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:17 AM
Sunrise
1:48 AM
Daylight
14h 49m
Sunset
4:37 PM
Civil dusk
9:10 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Chevy Chase, MD
The moon
Waning Gibbous
78% illuminated
Moonrise
11:00 PM
Moonset
10:13 AM
In sign
♓︎ Pisces
Chevy Chase, MD
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Chevy Chase at a glance

  • Today vs. normal: 27°F above the seasonal normal for this latitude
  • Last frost: April 10 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 20815

16-Day Forecast — Chevy Chase

  1. Sat101°79°26%
  2. Sun97°76°49%
  3. Mon85°74°80%
  4. Tue89°71°80%
  5. Wed76°70°38%
  6. Thu92°68°11%
  7. Fri91°73°43%
  8. Sat91°69°37%
  9. Sun83°71°22%
  10. Mon82°70°20%
  11. Tue88°67°18%
  12. Wed93°70°33%
  13. Thu94°71°37%
  14. Fri89°76°42%
  15. Sat95°73°44%
  16. Sun89°71°46%

Forecast data from Open-Meteo (CC BY 4.0).

Right now in the garden

Peak growing season

As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.

SPC Convective Outlook

Storm Prediction Center — Chevy Chase

SPC has placed Chevy Chase in the Enhanced Risk category for severe thunderstorms today.

  • TODAYENHEnhanced Risk
  • TOMORROWSLGTSlight Risk
  • DAY 3TSTMGeneral Thunderstorms

Numerous severe storms likely. Tornadoes, large hail, and damaging wind gusts possible across the area. Track NWS warnings if storms develop.

Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.

January 1–5: The year turns in silence.January 6–10: Ice thickens on still water.January 11–15: Shortest shadows lengthen.January 16–20: Pheasants begin to call.January 21–25: Springs begin to thaw.January 26–31: Chickadees announce dawn.February 1–5: East wind softens the frost.February 6–10: Sap begins to rise.February 11–15: First snowdrops appear.February 16–20: Red-winged blackbirds return.February 21–25: Rain begins to replace snow.February 26–28: Skunk cabbage pushes through ice.March 1–5: Ice withdraws from the reservoir.March 6–10: Crocuses open to weak sun.March 11–15: Peepers call from the marsh.March 16–20: Woodcocks spiral at dusk.March 21–25: Equinox — light overtakes dark.March 26–31: Forsythia opens along the fences.April 1–5: Cherry blossoms drift like snow.April 6–10: Warblers appear in the understory.April 11–15: Magnolias bloom and fall in a day.April 16–20: Dogwoods float above the forest.April 21–25: Lilacs perfume the evening.April 26–30: Last frost releases the garden.May 1–5: Warblers flood the Ramble.May 6–10: Tulip poplars light their candles.May 11–15: Shad run up the rivers.May 16–20: Roses open along the stoops.May 21–25: Firefly scouts appear at dusk.May 26–31: Strawberries ripen in the sun.June 1–5: Fireflies rise from the lawn.June 6–10: Elderflowers open in hedgerows.June 11–15: Solstice approaches — longest light.June 16–20: Honeysuckle sweetens the night.June 21–25: Solstice — the sun stands still.June 26–30: Lightning bugs drift through oaks.July 1–5: Cicadas claim the afternoon.July 6–10: Queen Anne's lace lines the roads.July 11–15: Thunder builds each afternoon.July 16–20: Corn reaches for the tassels.July 21–25: Dog days settle in the haze.July 26–31: Katydids begin their chorus.August 1–5: Night falls a minute earlier.August 6–10: Sunflowers face the morning.August 11–15: Goldenrod begins to bloom.August 16–20: Crickets pulse through warm nights.August 21–25: First cool morning surprises.August 26–31: Monarchs stage for flight.September 1–5: School buses reappear.September 6–10: Asters purple the roadsides.September 11–15: Hawk migration over the Hudson.September 16–20: Equinox — dark overtakes light.September 21–25: Apples hang heavy on the branch.September 26–30: Geese begin to chevron south.October 1–5: Witch hazel blooms as others fade.October 6–10: Maples begin to blaze.October 11–15: Frost paints the garden black.October 16–20: Oaks turn bronze and russet.October 21–25: Leaves rattle down the gutters.October 26–31: Clocks fall back — dusk at five.November 1–5: Ginkgos drop overnight.November 6–10: Last leaves cling stubbornly.November 11–15: Juncos arrive from the north.November 16–20: Bare branches reveal the sky.November 21–25: First flurries dust the rooftops.November 26–30: Woodsmoke curls through the block.December 1–5: Darkness settles before dinner.December 6–10: Holly and winterberry persist.December 11–15: Shortest day approaches.December 16–20: Ice begins to form at the edges.December 21–25: Solstice — the sun begins return.December 26–31: The year turns in silence.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

Microseason · July 1–5

Cicadas claim the afternoon

Annual cicada buzz begins, peaking in the heat of the day.

Day 185 of 365 · Wedge 37 of 72

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
February——
March——
Aprillettuce, peas, spinach, radishes—
Maylettuce, peas, spinach, radishes, tomatoes, peppers, beans, squashlettuce, peas, radishes
Junetomatoes, peppers, beans, squashlettuce, peas, radishes
Julytomatoes, peppers, beans, squashtomatoes, beans, summer squash
August—tomatoes, beans, summer squash
Septemberfall brassicas, garlic (overwinter), carrotstomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
November——
December——

A year in weather

In Chevy Chase, July runs warmest near 78°F and January coldest around 32°F, while August is the wettest month (4.2 inches) and October the driest (2.6 inches).

MonthMean tempPrecipRainy days
January32°3.3″13
February35°2.8″12
March44°3.4″15
April55°3.7″17
May63°3.5″18
June72°3.9″17
July78°3.2″17
August77°4.2″18
September70°3.4″14
October59°2.6″11
November46°3.6″12
December37°3.9″14

Regional context

Chevy Chase's climate, from NOAA NCEI 1991-2020 station normals, pairs 32°F Januarys with 78°F Julys — a 46°F swing. About 41.5 inches of precipitation falls over roughly 175 days a year.

Rainfall in Chevy Chase stays even across the calendar: August tops out at 4.2 inches over 17.8 rainy days, and October still logs 2.6 inches across 11.1 — a narrow range for Chevy Chase. It is a balanced pattern Chevy Chase shares with places like North Chevy Chase, MD, Chevy Chase Section Five, MD and Chevy Chase Section Three, MD.

By mid-April the frosts ease in Chevy Chase, opening the season for peas, lettuce, spinach, and radishes. Warm-soil crops in Chevy Chase wait about two weeks past Chevy Chase's last frost, once the soil warms. Around mid-November, freezing nights resume in Chevy Chase and tender crops must come in. Within Chevy Chase, cold-air pooling chills low spots by 5-10°F, shifting Chevy Chase's local frost dates.

Similar climates: North Chevy Chase, MD, Chevy Chase Section Five, MD, Chevy Chase Section Three, MD, Martin's Additions, MD, South Kensington, MD.

Frequently asked

When does it freeze in Chevy Chase?
Chevy Chase's last spring frost lands near mid-April, and in Chevy Chase the first fall frost follows around mid-November.
What is the rainy season in Chevy Chase?
August is the wettest month in Chevy Chase, about 4.2 inches on average; the year totals roughly 42 inches.
What is the warmest month in Chevy Chase?
July is Chevy Chase's warmest month, averaging about 78°F.
What is the coldest month in Chevy Chase?
Chevy Chase bottoms out in January, with a mean near 32°F.
When can I start a vegetable garden in Chevy Chase?
Time tomatoes in Chevy Chase for two weeks after mid-April; peas and greens start at Chevy Chase's frost line.
How many rainy days does Chevy Chase get?
Chevy Chase averages about 175 days with measurable rain or snow each year.
What hardiness zone is Chevy Chase?
Chevy Chase's USDA zone comes from its January mean (32°F); enter the ZIP on the USDA lookup for the number.
What is the 10-day forecast for Chevy Chase?
Chevy Chase's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
Will it rain this week in Chevy Chase?
See this week's day-by-day rain chances for Chevy Chase in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Chevy Chase?
Current conditions for Chevy Chase and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Chevy Chase forecast updated?
The Chevy Chase forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Chevy Chase?
Today's sunrise and sunset times for Chevy Chase are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
How accurate is the weather forecast for Chevy Chase?
The next few days in Chevy Chase's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Chevy Chase, Maryland has a warm-summer humid continental climate: January averages roughly 32°F, July about 78°F, 46°F between them.

Chevy Chase sees close to 42 inches of precipitation annually, falling across some 175 wet days.

Latitude 39.0°N gives Chevy Chase its 46°F swing, and with it the rhythm of Chevy Chase's growing season.

All cities in Maryland →

Bethesda, MD weather →

ZIP codes in Chevy Chase

  • 20814
  • 20815
  • 20825

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.