Grasonville, Maryland Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Grasonville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Rain22%0.13″102°78°—
- SundayJul 5Overcast38%—97°77°-5°
- MondayJul 6Light Showers80%0.01″90°72°-7°
- TuesdayJul 7Drizzle70%—87°70°-3°
- WednesdayJul 8Light Rain36%0.13″80°69°-7°
- ThursdayJul 9Partly Cloudy——91°68°+11°
- FridayJul 10Overcast32%—95°74°+4°
AQI 119 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 64 in the last 6 hours — air quality is degrading. Ozone at AQI 103 — 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.
What's driving it
Ozone × UV × Sky
Ozone at AQI 103 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 103
- UV peak
- 2.1 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 103
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 13.4 µg/m³, PM10 to 14.6 µg/m³.
- PM2.5/PM10
- 0.92
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:56 PM
- Moonset
- 10:09 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Grasonville 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: 21638
16-Day Forecast — Grasonville
- Sat102°78°22%
- Sun97°77°38%
- Mon90°72°80%
- Tue87°70°70%
- Wed80°69°36%
- Thu91°68°9%
- Fri95°74°32%
- Sat93°76°32%
- Sun84°71°21%
- Mon79°67°16%
- Tue87°66°16%
- Wed92°69°34%
- Thu92°73°35%
- Fri92°75°32%
- Sat94°75°35%
- Sun91°78°43%
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 — Grasonville
SPC has placed Grasonville 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 Grasonville
- 21638