Highland, Maryland Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Highland weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle20%—98°78°—
- SundayJul 5Heavy Drizzle46%0.07″94°72°-4°
- MondayJul 6Light Showers75%—82°72°-12°
- TuesdayJul 7Thunderstorm75%0.30″87°69°+5°
- WednesdayJul 8Rain37%0.18″77°68°-10°
- ThursdayJul 9Overcast13%—89°66°+12°
- FridayJul 10Light Drizzle42%0.02″88°71°-1°
AQI 117 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 63 in the last 6 hours — air quality is degrading. Ozone at AQI 88 — 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 88 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 88
- UV peak
- 0.8 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 88
PM × Wind × Precip
PM2.5 at 8.7 µg/m³ (AQI 48) with a 0.90 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.90
- 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
- 11:00 PM
- Moonset
- 10:12 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Highland at a glance
- Today vs. normal: 26°F above the seasonal normal for this latitude
- Last frost: April 11 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 20777
16-Day Forecast — Highland
- Sat98°78°20%
- Sun94°72°46%
- Mon82°72°75%
- Tue87°69°75%
- Wed77°68°37%
- Thu89°66°13%
- Fri88°71°42%
- Sat88°69°34%
- Sun79°66°22%
- Mon81°69°20%
- Tue84°64°16%
- Wed88°67°33%
- Thu91°69°37%
- Fri87°72°42%
- Sat88°70°44%
- Sun86°70°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 — Highland
SPC has placed Highland 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 Highland
- 20759
- 20777