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Port Penn, Delaware Weather

Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →

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

Port Penn, DE
Saturday, July 4 at 11:50 PM
76
°
Overcast
Feels like
80°
Humidity
78%
Wind
8 mph
Sunrise
1:40 AM
Sunset
4:33 PM
Port Penn, DE
Hour by hour · 24h
24-Hour ForecastPort Penn, DE: 24-hour forecast. Temperatures range from 74 to 88 degrees Fahrenheit with a 61% chance of precipitation at 11 PM.
L 74°H 88°
Port Penn, DE
7-day forecast
  1. Today
    Jul 4
    Heavy Rain
    61%
    0.49″
    99°76°—
  2. Sunday
    Jul 5
    Rain
    47%
    0.16″
    88°74°-11°
  3. Monday
    Jul 6
    Showers
    73%
    0.02″
    83°71°-5°
  4. Tuesday
    Jul 7
    Heavy Drizzle
    62%
    —
    76°69°-7°
  5. Wednesday
    Jul 8
    Overcast
    34%
    —
    77°66°+1°
  6. Thursday
    Jul 9
    Drizzle
    27%
    —
    87°65°+10°
  7. Friday
    Jul 10
    Overcast
    38%
    —
    95°72°+8°
Port Penn, DE
Next 24 hours · Mild now
HOT 90°70°81°92°12a6a12p6pnow 76°high 88°low 74°PRECIP %
Port Penn, DE
Anemometer · 24h winds · from true
NESW
From · True
WSW
249° · veering 39°
Direction
WSW
249°
Sustained
8
mph
Gust
20
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 @ 11:00p
010203040MPHB1B2B3B4B5B6B7B8-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 3916SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 39° from the wsw.
Port Penn, DE
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1014.5
+3.0 mb in 3h · rising rapidly · 29.96 inHg
Now
1014.5
mb
3h
+3.0
mb
12h
-1.1
mb
24h
-0.6
mb
Regime · CHANGE
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1010–1015
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1015.21010.21013.4
−24h−18h−12h−6hnow
Pressure climbing through the change line — drier air pushing in.
Port Penn, DE
Air quality
97
AQI
Moderate
↓-15 in 6h

AQI 97 (Moderate), driven by Ozone. AQI down 15 over the last 6 hours — air quality is improving sharply. Ozone at AQI 49 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 12 around 1 PM.

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

PM 2.5Good
8.3μg/m³
PM 10Good
9μg/m³
NO₂Good
8μg/m³
OzoneDRIVERUnhealthy SG
103μg/m³
UV IndexLow
0.0

What's driving it

Ozone × UV × Sky

Ozone at AQI 49 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 12 around 1 PM.

Present
AQI 49
UV peak
0.0 at 1 PM
Sky at peak
clear
Projected peak
AQI 12

PM × Wind × Precip

PM scrubbed by 2 hours of recent rain — PM2.5 down to 8.3 µg/m³, PM10 to 8.8 µg/m³.

PM2.5/PM10
0.94
Wind
light
Recent rain
2h in last 6h
Pattern
washed out

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 TREND50100SUNMONTUEWEDTHUFRISATSUN7-DAY PM2.5 TREND · μg/m³300
Port Penn, DE
Sky cover · visibility · 24h
Cloud cover
100%
OVERCAST
100%0%−24h−18h−12h−6hnow
Visibility
41.2mi
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
03:50 UTC · Port Penn, 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
03:50 UTC · Port Penn, DE · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Port Penn, DE
Satellite · infrared · animated
Port Penn, DE
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Port Penn, DE
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:09 AM
Sunrise
1:40 AM
Daylight
14h 53m
Sunset
4:33 PM
Civil dusk
9:06 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Port Penn, DE
The moon
Waning Gibbous
76% illuminated
Moonrise
11:19 PM
Moonset
11:12 AM
In sign
♓︎ Pisces
Port Penn, DE
Microseason
Jul 1–5

Cicadas claim the afternoon

fish
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Port Penn at a glance

  • Today vs. normal: 4°F above the seasonal normal for this latitude
  • Last frost: April 13 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 19731

16-Day Forecast — Port Penn

  1. Sat99°76°61%
  2. Sun88°74°47%
  3. Mon83°71°73%
  4. Tue76°69°62%
  5. Wed77°66°34%
  6. Thu87°65°27%
  7. Fri95°72°38%
  8. Sat88°66°28%
  9. Sun78°67°14%
  10. Mon87°61°13%
  11. Tue88°61°12%
  12. Wed91°65°27%
  13. Thu89°67°29%
  14. Fri87°64°26%
  15. Sat89°71°36%
  16. Sun94°73°42%

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

Right now in the garden

Peak growing season

As of July 5, 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 — Port Penn

SPC has placed Port Penn in the Slight Risk category for severe thunderstorms today.

  • TODAYSLGTSlight Risk
  • TOMORROWSLGTSlight Risk
  • DAY 3TSTMGeneral Thunderstorms

Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.

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 →

Wilmington, DE weather →

ZIP codes in Port Penn

  • 19731

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.