Chevy Chase Section Three, Maryland Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Chevy Chase Section Three weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——89°55°—
- FridayJun 5Overcast——93°63°+4°
- SaturdayJun 6Overcast23%—95°68°+2°
- SundayJun 7Showers23%—90°66°-5°
- MondayJun 8Light Drizzle——81°65°-9°
- TuesdayJun 9Partly Cloudy——87°58°+6°
- WednesdayJun 10Mostly Clear——89°63°+2°
PM2.5 at 5.7 µg/m³ (AQI 32) with a 0.98 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust. AQI down 14 over the last 6 hours (steady decline since this morning).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 5 PM.
What's driving it
PM × Wind × Precip
PM2.5 at 5.7 µg/m³ (AQI 32) with a 0.98 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.98
- Wind
- calm
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:33 AM
- Moonset
- 1:11 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Chevy Chase Section Three at a glance
- Today vs. normal: 18°F below the seasonal normal for this latitude
- Last frost: April 10 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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 — Chevy Chase Section Three
SPC has placed Chevy Chase Section Three in the General Thunderstorms category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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.
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
Chevy Chase Section Three's warmest month is July (~80°F mean) and its coldest is January (~36°F). Rainfall peaks in July (4.6 inches) and bottoms out in February (2.8 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 36° | 3.0″ | 6 |
| February | 39° | 2.8″ | 5 |
| March | 46° | 4.0″ | 7 |
| April | 57° | 3.4″ | 7 |
| May | 67° | 4.3″ | 8 |
| June | 76° | 4.6″ | 8 |
| July | 80° | 4.6″ | 7 |
| August | 79° | 3.7″ | 7 |
| September | 72° | 4.1″ | 6 |
| October | 59° | 4.2″ | 5 |
| November | 49° | 3.2″ | 5 |
| December | 41° | 3.7″ | 7 |
Frequently asked
- When does it freeze in Chevy Chase Section Three?
- Chevy Chase Section Three's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Chevy Chase Section Three?
- July is the wettest month with about 4.6 inches of rain on average; the city receives roughly 46 inches annually.
- What is the warmest month in Chevy Chase Section Three?
- July is typically warmest, averaging about 80°F.
- What is the coldest month in Chevy Chase Section Three?
- January is typically coldest, averaging about 36°F.
- When can I start a vegetable garden in Chevy Chase Section Three?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-April); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Chevy Chase Section Three get?
- Chevy Chase Section Three averages about 79 rainy days per year.
- What hardiness zone is Chevy Chase Section Three?
- Chevy Chase Section Three's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Chevy Chase Section Three, Maryland sits in a warm-summer humid continental climate zone. January means hover near 36°F while July averages 80°F — a 44°F seasonal swing.
Across the year, Chevy Chase Section Three receives about 46 inches of precipitation spread over roughly 79 rainy days.
The rhythm of the year is set by latitude (39.0°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.