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Four Corners, Maryland Weather

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

Four Corners weather forecast — hour by hour, 7-day outlook, NOAA radar

Four Corners, MD
Saturday, July 4 at 7:16 PM
77
°
Overcast
Feels like
80°
Humidity
75%
Wind
11 mph
Sunrise
1:47 AM
Sunset
4:37 PM
Four Corners, MD
Hour by hour · 24h
24-Hour ForecastFour Corners, MD: 24-hour forecast. Temperatures range from 75 to 96 degrees Fahrenheit with a 44% chance of precipitation at 7 PM.
L 75°H 96°
Four Corners, MD
7-day forecast
  1. Today
    Jul 4
    Heavy Snow
    44%
    1.0″
    100°77°—
  2. Sunday
    Jul 5
    Heavy Rain
    52%
    0.57″
    96°75°-4°
  3. Monday
    Jul 6
    Light Showers
    80%
    0.02″
    83°73°-13°
  4. Tuesday
    Jul 7
    Thunderstorm
    80%
    0.53″
    88°69°+5°
  5. Wednesday
    Jul 8
    Rain
    38%
    0.17″
    77°69°-11°
  6. Thursday
    Jul 9
    Overcast
    12%
    —
    91°67°+14°
  7. Friday
    Jul 10
    Light Drizzle
    43%
    0.04″
    91°72°0°
Four Corners, MD
Next 24 hours · Mild now
HOT 90°70°85°100°6p12a6a12pnow 77°high 96°low 75°PRECIP %
Four Corners, MD
Anemometer · 24h winds · from true
NESW
From · True
NNE
013° · veering 117°
Direction
NNE
013°
Sustained
11
mph
Gust
15
mph
Peak 24h
23
avg 5
Beaufort · 3 · GENTLE 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 5 · pk 23 @ 7:00p
010203040MPHB1B2B3B4B5B6B7B8-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 334SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 117° from the nne.
Four Corners, MD
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1001.9
+0.4 mb in 3h · steady · 29.59 inHg
Now
1001.9
mb
3h
+0.4
mb
12h
-1.9
mb
24h
-1.2
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1000–1005
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1004.6999.91001.9
−24h−18h−12h−6hnow
Damp, unsettled regime — wet weather lingers nearby.
Four Corners, MD
Air quality
88
AQI
Moderate
↑+37 in 6h

AQI 88 (Moderate), driven by Ozone. AQI up 37 in the last 6 hours — air quality is degrading. Ozone at AQI 55. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5Good
9.6μg/m³
PM 10Good
10μg/m³
NO₂Good
7μg/m³
OzoneDRIVERUnhealthy SG
110μg/m³
UV IndexLow
0.5

What's driving it

Ozone × UV × Sky

Ozone at AQI 55. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.

Present
AQI 55
UV peak
0.4 at 1 PM
Sky at peak
overcast
Projected peak
AQI 7

PM × Wind × Precip

PM2.5 at 9.6 µg/m³, PM10 at 10.1 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.95
Wind
breezy
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/m³360
Four Corners, MD
Sky cover · visibility · 24h
Cloud cover
100%
OVERCAST
100%0%−24h−18h−12h−6hnow
Visibility
48.3mi
UNLIMITED
110 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
23:16 UTC · Four Corners, 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
23:16 UTC · Four Corners, MD · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Four Corners, MD
Satellite · infrared · animated
Four Corners, MD
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Four Corners, MD
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:16 AM
Sunrise
1:47 AM
Daylight
14h 50m
Sunset
4:37 PM
Civil dusk
9:10 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Four Corners, MD
The moon
Waning Gibbous
78% illuminated
Moonrise
11:00 PM
Moonset
10:12 AM
In sign
♓︎ Pisces
Four Corners, MD
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Four Corners at a glance

  • Today vs. normal: 4°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.

16-Day Forecast — Four Corners

  1. Sat100°77°44%
  2. Sun96°75°52%
  3. Mon83°73°80%
  4. Tue88°69°80%
  5. Wed77°69°38%
  6. Thu91°67°12%
  7. Fri91°72°43%
  8. Sat90°69°37%
  9. Sun81°68°22%
  10. Mon80°70°20%
  11. Tue87°66°17%
  12. Wed91°69°33%
  13. Thu94°71°37%
  14. Fri89°74°42%
  15. Sat91°71°44%
  16. Sun88°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 — Four Corners

SPC has placed Four Corners 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

July is Four Corners's warmest stretch (~78°F) and January its coldest (~32°F); precipitation crests in August at 4.2 inches and ebbs in October to 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

In Four Corners, NOAA NCEI 1991-2020 normals put January near 32°F and July near 78°F — a 46°F seasonal arc — with about 41.5 inches of precipitation over 175 rainy or snowy days.

Rainfall in Four Corners 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 Four Corners. It is a balanced pattern Four Corners shares with places like Burnt Mills, MD, Kemp Mill, MD and Silver Spring, MD.

Around mid-April, Four Corners sheds its freezing nights — peas, lettuce, spinach, and radishes go into Four Corners's beds. Four Corners's heat-lovers — tomatoes, peppers, squash — hold off until Four Corners's frost risk clears, 10-14 days on. By mid-November, frost is back in Four Corners — protect or harvest anything tender. A creek-bottom lot in Four Corners can lag Four Corners's last frost 7-10 days behind a south slope.

Similar climates: Burnt Mills, MD, Kemp Mill, MD, Silver Spring, MD, Forest Glen, MD, White Oak, MD.

Frequently asked

When does it freeze in Four Corners?
Frost typically leaves Four Corners by mid-April and returns to Four Corners near mid-November.
What is the rainy season in Four Corners?
Rainfall in Four Corners peaks in August near 4.2 inches, out of about 42 inches annually.
What is the warmest month in Four Corners?
On average July tops the year in Four Corners at about 78°F.
What is the coldest month in Four Corners?
The coldest stretch in Four Corners falls in January, around 32°F on average.
When can I start a vegetable garden in Four Corners?
Hardy spring crops go in near mid-April in Four Corners; tender peppers and squash wait 10–14 days.
How many rainy days does Four Corners get?
Four Corners records around 175 days of measurable precipitation annually.
What hardiness zone is Four Corners?
Since January in Four Corners averages 32°F, Four Corners's USDA zone follows that floor — confirm it by ZIP.
What is the 10-day forecast for Four Corners?
Four Corners'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 Four Corners?
See this week's day-by-day rain chances for Four Corners in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Four Corners?
Current conditions for Four Corners and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Four Corners forecast updated?
The Four Corners forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Four Corners?
Today's sunrise and sunset times for Four Corners 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 Four Corners?
The next few days in Four Corners's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

In Four Corners, Maryland, the warm-summer humid continental climate runs from about 32°F in January to 78°F in July, a 46°F seasonal range.

Across the year, Four Corners collects about 42 inches of precipitation over roughly 175 days with measurable rain or snow.

Four Corners's 46°F range, set by its 39.0°N position, drives frost timing and what thrives in Four Corners.

All cities in Maryland →

Silver Spring, MD weather →

ZIP codes in Four Corners

  • 20901
  • 20918

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.