Forest Heights, Maryland Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Forest Heights weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle37%—103°80°—
- SundayJul 5Overcast50%—98°76°-5°
- MondayJul 6Light Showers80%—86°74°-12°
- TuesdayJul 7Showers80%—78°71°-8°
- WednesdayJul 8Light Drizzle39%0.02″79°69°+1°
- ThursdayJul 9Overcast12%—96°68°+17°
- FridayJul 10Light Drizzle41%0.02″99°75°+3°
AQI 85 (Moderate), driven by PM2.5. AQI down 7 over the last 6 hours (gradual decline). PM2.5 at 14.7 µg/m³ (AQI 61) with a 0.97 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 41 now. With UV 0.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 7 around 1 PM.
- Present
- AQI 41
- UV peak
- 0.0 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 7
PM × Wind × Precip
PM2.5 at 14.7 µg/m³ (AQI 61) with a 0.97 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.97
- 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
- 11:24 PM
- Moonset
- 11:18 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Forest Heights at a glance
- Today vs. normal: 9°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 — Forest Heights
- Sat103°82°37%
- Sun98°77°50%
- Mon86°74°80%
- Tue78°71°80%
- Wed79°69°39%
- Thu96°68°12%
- Fri99°75°41%
- Sat85°71°40%
- Sun81°70°24%
- Mon87°66°19%
- Tue92°65°19%
- Wed91°68°33%
- Thu92°70°37%
- Fri92°72°42%
- Sat90°72°44%
- Sun89°69°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 — Forest Heights
SPC has placed Forest Heights 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.
Microseason · July 1–5
Cicadas claim the afternoon
Annual cicada buzz begins, peaking in the heat of the day.
Day 186 of 365 · Wedge 37 of 72
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Forest Heights's warmest month is July (~79°F mean) and its coldest is January (~34°F). Rainfall peaks in August (4.2 inches) and bottoms out in October (2.6 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 34° | 3.4″ | 13 |
| February | 37° | 2.8″ | 12 |
| March | 45° | 3.4″ | 14 |
| April | 56° | 3.6″ | 16 |
| May | 64° | 3.4″ | 17 |
| June | 73° | 3.8″ | 17 |
| July | 79° | 3.2″ | 17 |
| August | 78° | 4.2″ | 18 |
| September | 71° | 3.2″ | 13 |
| October | 60° | 2.6″ | 11 |
| November | 47° | 3.5″ | 12 |
| December | 38° | 3.8″ | 13 |
Regional context
Drawing on NOAA NCEI 1991-2020 normals, Forest Heights's January averages 34°F and July 79°F — 45°F apart — while precipitation totals roughly 41 inches over some 174 days.
No season owns Forest Heights's rain: August reaches 4.2 inches across 18.0 days and October keeps 2.6 inches on 11.4, an even spread through Forest Heights's year. That even rhythm groups Forest Heights with places like National Harbor, MD, Glassmanor, MD and Oxon Hill, MD.
Forest Heights's growing window opens around mid-April, once Forest Heights's overnight lows stop freezing — sow peas, lettuce, spinach, and radishes. Hold Forest Heights's tender crops — tomatoes, peppers, basil — until 10-14 days past Forest Heights's last frost. It shuts near mid-November, when freezes return to Forest Heights and tender plants need cover. Within Forest Heights, cold-air pooling chills low spots by 5-10°F, shifting Forest Heights's local frost dates.
Similar climates: National Harbor, MD, Glassmanor, MD, Oxon Hill, MD, Temple Hills, MD, Hillcrest Heights, MD.
Frequently asked
- When does it freeze in Forest Heights?
- Frost typically leaves Forest Heights by mid-April and returns to Forest Heights near mid-November.
- What is the rainy season in Forest Heights?
- August is the wettest month in Forest Heights, about 4.2 inches on average; the year totals roughly 41 inches.
- What is the warmest month in Forest Heights?
- The warmest stretch in Forest Heights comes in July, around 79°F on average.
- What is the coldest month in Forest Heights?
- On average January is the chilliest month in Forest Heights, about 34°F.
- When can I start a vegetable garden in Forest Heights?
- Forest Heights's last frost (mid-April) cues hardy greens; in Forest Heights, hold heat-lovers two weeks past.
- How many rainy days does Forest Heights get?
- Forest Heights averages about 174 days with measurable rain or snow each year.
- What hardiness zone is Forest Heights?
- Forest Heights sits in the USDA zone set by January lows near 34°F; the USDA ZIP tool gives the band.
- What is the 10-day forecast for Forest Heights?
- Forest Heights's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Forest Heights?
- See this week's day-by-day rain chances for Forest Heights in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Forest Heights?
- Current conditions for Forest Heights and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Forest Heights forecast updated?
- The Forest Heights forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Forest Heights?
- Today's sunrise and sunset times for Forest Heights are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Forest Heights?
- The next few days in Forest Heights's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Forest Heights, Maryland occupies a warm-summer humid continental zone, with January means near 34°F and July around 79°F — a 45°F swing.
Yearly precipitation in Forest Heights totals around 41 inches, spread over about 174 days of rain or snow.
Latitude 38.8°N gives Forest Heights its 45°F swing, and with it the rhythm of Forest Heights's growing season.
ZIP codes in Forest Heights
- 20745
- 20750