Greenville, Delaware Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Greenville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast20%—100°77°—
- SundayJul 5Light Rain43%0.11″94°74°-6°
- MondayJul 6Thunderstorm91%0.26″74°71°-20°
- TuesdayJul 7Showers74%—81°68°+7°
- WednesdayJul 8Light Drizzle18%0.02″78°65°-3°
- ThursdayJul 9Overcast16%—89°67°+11°
- FridayJul 10Light Drizzle37%—89°71°0°
AQI 78 (Moderate), driven by Ozone. AQI up 24 in the last 6 hours — air quality is degrading. Ozone at AQI 108 — 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.
What's driving it
Ozone × UV × Sky
Ozone at AQI 108 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 108
- UV peak
- 6.3 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 108
PM × Wind × Precip
PM2.5 at 7.0 µg/m³ (AQI 39) with a 0.93 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.93
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:55 PM
- Moonset
- 10:06 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Greenville at a glance
- Today vs. normal: 27°F above the seasonal normal for this latitude
- Last frost: April 15 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Greenville
- Sat100°77°20%
- Sun94°74°43%
- Mon74°71°91%
- Tue81°68°74%
- Wed78°65°18%
- Thu89°67°16%
- Fri89°71°37%
- Sat88°72°34%
- Sun83°69°28%
- Mon81°69°24%
- Tue86°67°21%
- Wed90°67°41%
- Thu90°71°41%
- Fri93°73°35%
- Sat94°72°29%
- Sun89°74°39%
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 — Greenville
SPC has placed Greenville 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.
ZIP codes in Greenville
- 19807