Rosaryville, Maryland Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Rosaryville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast34%—103°81°—
- SundayJul 5Overcast41%—98°76°-5°
- MondayJul 6Thunderstorm83%0.11″87°73°-11°
- TuesdayJul 7Light Showers83%0.02″86°68°-1°
- WednesdayJul 8Heavy Showers36%1.3″77°69°-9°
- ThursdayJul 9Overcast12%—93°67°+16°
- FridayJul 10Light Drizzle39%0.01″96°71°+3°
AQI 130 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 76 in the last 6 hours — air quality is degrading. Ozone at AQI 76. Overcast through the UV peak window (cloud cover ~84%) — afternoon ozone should stay flat.
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 76. Overcast through the UV peak window (cloud cover ~84%) — afternoon ozone should stay flat.
- Present
- AQI 76
- UV peak
- 0.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 9
PM × Wind × Precip
PM2.5 at 11.2 µg/m³, PM10 at 11.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.94
- Wind
- windy
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:59 PM
- Moonset
- 10:12 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Rosaryville at a glance
- Today vs. normal: 10°F above the seasonal normal for this latitude
- Last frost: April 9 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Rosaryville
- Sat103°81°34%
- Sun98°76°41%
- Mon87°73°83%
- Tue86°68°83%
- Wed77°69°36%
- Thu93°67°12%
- Fri96°71°39%
- Sat94°68°40%
- Sun82°68°24%
- Mon79°67°17%
- Tue87°63°18%
- Wed93°68°33%
- Thu91°68°37%
- Fri93°70°42%
- Sat96°69°44%
- Sun90°69°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 — Rosaryville
SPC has placed Rosaryville 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 Rosaryville
- 20623
- 20772