Weather StoryAlmanac, microseasons, and the day's weather story.

Clayton, Delaware Weather

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

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

Clayton, DE
Saturday, July 4 at 3:31 PM
101
°
Clear
Feels like
104°
Humidity
28%
Wind
7 mph
Sunrise
1:41 AM
Sunset
4:32 PM
Clayton, DE
Hour by hour · 24h
24-Hour ForecastClayton, DE: 24-hour forecast. Temperatures range from 75 to 100 degrees Fahrenheit with a 25% chance of precipitation at 9 PM.
L 75°H 100°
Clayton, DE
7-day forecast
  1. Today
    Jul 4
    Overcast
    25%
    —
    100°80°—
  2. Sunday
    Jul 5
    Rain
    38%
    0.43″
    93°74°-7°
  3. Monday
    Jul 6
    T-storm w/ Hail
    84%
    0.02″
    85°73°-8°
  4. Tuesday
    Jul 7
    Thunderstorm
    79%
    —
    88°70°+3°
  5. Wednesday
    Jul 8
    Heavy Drizzle
    20%
    —
    79°68°-9°
  6. Thursday
    Jul 9
    Mostly Clear
    16%
    —
    90°67°+11°
  7. Friday
    Jul 10
    Overcast
    39%
    —
    94°72°+4°
Clayton, DE
Next 24 hours · Hot now
HOT 90°70°88°105°12p6p12a6anow 100°high 100°low 75°PRECIP %
Clayton, DE
Anemometer · 24h winds · from true
NESW
From · True
WSW
249° · backing 18°
Direction
WSW
249°
Sustained
7
mph
Gust
11
mph
Peak 24h
20
avg 5
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 5 · pk 20 @ 12:00a
01020304050MPHB1B2B3B4B5B6B7B8B9-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 459SUSTGUST
−24h−18h−12h−6hnow
Light breeze backing 18° from the wsw.
Clayton, DE
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1010.6
-2.2 mb in 3h · falling rapidly · 29.84 inHg
Now
1010.6
mb
3h
-2.2
mb
12h
-1.9
mb
24h
-2.6
mb
Regime · CHANGE
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1011–1013
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1013.41010.71010.8
−24h−18h−12h−6hnow
Pressure slipping through the change line — wetter air on the way.
Clayton, DE
Air quality
66
AQI
Moderate
↑+15 in 6h▲Peak ~101 @ 11 PM

AQI 66 (Moderate), driven by Ozone. AQI up 15 in the last 6 hours — air quality is degrading. Ozone at AQI 100 — peak already passed at 1 PM under clear skies. Levels should ease through evening.

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

PM 2.5Good
6.5μg/m³
PM 10Good
7μg/m³
NO₂Good
1μg/m³
OzoneDRIVERUnhealthy SG
137μg/m³
UV IndexHigh
6.8

What's driving it

Ozone × UV × Sky

Ozone at AQI 100 — peak already passed at 1 PM under clear skies. Levels should ease through evening.

Present
AQI 100
UV peak
6.5 at earlier today
Sky at peak
clear
Projected peak
AQI 100

PM × Wind × Precip

PM2.5 at 6.5 µg/m³, PM10 at 7.0 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.93
Wind
light
Recent rain
0h 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/m³300
Clayton, DE
Sky cover · visibility · 24h
Cloud cover
0%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
140.1mi
UNLIMITED
140 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
19:31 UTC · Clayton, DE · 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
19:31 UTC · Clayton, DE · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Clayton, DE
Satellite · infrared · animated
Clayton, DE
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Clayton, DE
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:10 AM
Sunrise
1:41 AM
Daylight
14h 51m
Sunset
4:32 PM
Civil dusk
9:05 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Clayton, DE
The moon
Waning Gibbous
79% illuminated
Moonrise
10:55 PM
Moonset
10:07 AM
In sign
♓︎ Pisces
Clayton, DE
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Clayton at a glance

  • Today vs. normal: 29°F above the seasonal normal for this latitude
  • Last frost: April 12 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 19938

16-Day Forecast — Clayton

  1. Sat101°80°25%
  2. Sun93°74°38%
  3. Mon85°73°84%
  4. Tue88°70°79%
  5. Wed79°68°20%
  6. Thu90°67°16%
  7. Fri94°72°39%
  8. Sat93°73°31%
  9. Sun84°68°24%
  10. Mon79°70°19%
  11. Tue88°68°23%
  12. Wed92°67°45%
  13. Thu93°70°41%
  14. Fri94°72°34%
  15. Sat94°72°34%
  16. Sun93°74°45%

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 — Clayton

SPC has placed Clayton 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.

All cities in Delaware →

Dover, DE weather →

ZIP codes in Clayton

  • 19938

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.