Rosaryville, Maryland Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Rosaryville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle34%0.02″103°80°—
- SundayJul 5Overcast41%—98°76°-5°
- MondayJul 6Heavy Rain83%0.11″86°74°-12°
- TuesdayJul 7Showers83%—78°70°-8°
- WednesdayJul 8Light Drizzle36%0.01″79°68°+1°
- ThursdayJul 9Overcast12%—96°67°+17°
- FridayJul 10Drizzle39%0.11″99°72°+3°
AQI 111 (Unhealthy for Sensitive Groups), driven by PM2.5. AQI up 12 over the last 6 hours (gradual rise). PM2.5 at 12.5 µg/m³, PM10 at 13.1 µg/m³ — typical background levels with no transport signature.
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 50 now. With UV 0.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 9 around 1 PM.
- Present
- AQI 50
- UV peak
- 0.0 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 9
PM × Wind × Precip
PM2.5 at 12.5 µg/m³, PM10 at 13.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.95
- Wind
- light
- Recent rain
- 1h 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
- 11:23 PM
- Moonset
- 11:17 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Rosaryville at a glance
- Today vs. normal: 8°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°80°34%
- Sun98°76°41%
- Mon86°74°83%
- Tue78°70°83%
- Wed79°68°36%
- Thu96°67°12%
- Fri99°72°39%
- Sat83°71°40%
- Sun78°68°24%
- Mon85°62°17%
- Tue90°61°18%
- Wed91°64°33%
- Thu91°65°37%
- Fri91°68°42%
- Sat89°71°44%
- Sun90°68°46%
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 — 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