Highland, Maryland Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Highland weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Heavy Rain42%1.4″92°71°—
- MondayJul 6Light Showers35%0.28″83°72°-9°
- TuesdayJul 7Drizzle66%0.04″73°67°-10°
- WednesdayJul 8Light Drizzle44%0.03″74°65°+1°
- ThursdayJul 9Light Showers46%0.13″92°67°+18°
- FridayJul 10Light Drizzle42%0.02″88°69°-4°
- SaturdayJul 11Overcast37%—84°67°-4°
AQI 103 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 55 in the last 6 hours — air quality is degrading. Ozone at AQI 133 — 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 133 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 133
- UV peak
- 1.2 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 133
PM × Wind × Precip
PM2.5 at 13.0 µg/m³, PM10 at 14.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.92
- Wind
- light
- 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
- 11:24 PM
- Moonset
- 11:17 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Highland at a glance
- Today vs. normal: 20°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
- Sun93°71°42%
- Mon83°72°35%
- Tue73°67°66%
- Wed74°65°44%
- Thu92°67°46%
- Fri88°69°42%
- Sat84°67°37%
- Sun82°68°24%
- Mon87°67°17%
- Tue71°62°17%
- Wed76°61°17%
- Thu81°63°22%
- Fri84°68°29%
- Sat87°67°29%
- Sun82°69°26%
- Mon79°67°26%
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 — Highland
SPC has placed Highland in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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