Keedysville, Maryland Weather
Night falls a minute earlier. Day 43 of summer. Read this microseason across nine climate regions →
Keedysville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayAug 2Rain58%0.38″83°75°—
- MondayAug 3Showers34%0.20″86°73°+3°
- TuesdayAug 4Overcast17%—85°68°-1°
- WednesdayAug 5Heavy Drizzle21%—84°67°-1°
- ThursdayAug 6Overcast42%—92°72°+8°
- FridayAug 7Light Drizzle43%—94°72°+2°
- SaturdayAug 8Light Drizzle43%—96°70°+2°
AQI 42 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM scrubbed by 5 hours of recent rain — PM2.5 down to 9.3 µg/m³, PM10 to 11.9 µg/m³.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 9 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 47. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 47
- UV peak
- 5.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 16
PM × Wind × Precip
PM scrubbed by 5 hours of recent rain — PM2.5 down to 9.3 µg/m³, PM10 to 11.9 µg/m³.
- PM2.5/PM10
- 0.78
- Wind
- breezy
- Recent rain
- 5h in last 6h
- Pattern
- washed out
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).
Red sky at night, sailor's delight.
- Moonrise
- 9:53 PM
- Moonset
- 10:13 AM
- In sign
- ♓︎ Pisces
Night falls a minute earlier
Keedysville at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: April 13 (climatological average for this latitude)
- Microseason: Aug 1–5
- Planting window: Sow fall peas. Start kale and collard seedlings for fall.
ZIP code: 21756
16-Day Forecast — Keedysville
- Sun83°75°58%
- Mon86°73°34%
- Tue85°68°17%
- Wed84°67°21%
- Thu92°72°42%
- Fri94°72°43%
- Sat96°70°43%
- Sun100°71°24%
- Mon99°69°16%
- Tue91°70°16%
- Wed89°66°19%
- Thu96°71°34%
- Fri97°71°39%
- Sat93°72°39%
- Sun94°71°35%
- Mon92°68°29%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of August 2, 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 — Keedysville
SPC has placed Keedysville in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
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.
Sun & seasons in Keedysville
Keedysville sits in Washington County, where the year’s longest day runs 14h 58m of daylight and its shortest just 9h 23m — a swing of +5h 35m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Baltimore, the state’s largest city, lies about 59 miles to the ESE. The nearest town Keedysville tracks is Hagerstown, roughly 11 miles to the N.
Air quality in Keedysville’s county has held roughly steady since 2020; its cleanest year on record was 2020 (median AQI 40). See the full air-quality history for Keedysville.
ZIP codes in Keedysville
- 21756