Waldorf, Maryland Weather
Day 93 of summer. Read today’s microseason across nine climate regions →
Waldorf weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 1:00 AM EDT · Open-Meteo
- TodaySep 21Light Drizzle later25%0.07″75°68°—
- TuesdaySep 22Overcast87%0.18″69°59°-6°
- WednesdaySep 23Light Drizzle73%0.07″64°58°-5°
- ThursdaySep 24Heavy Drizzle28%0.17″62°54°-2°
- FridaySep 25Overcast18%—71°49°+9°
- SaturdaySep 26Overcast18%—74°53°+3°
- SundaySep 27Overcast——72°59°-2°
Air quality now AQI 36 · Good
AQI 36 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±4 points). Ozone at AQI 30. Overcast through the UV peak window (cloud cover ~89%) — afternoon ozone should stay flat.
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 30. Overcast through the UV peak window (cloud cover ~89%) — afternoon ozone should stay flat.
- Present
- AQI 30
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 7
PM × Wind × Precip
PM2.5 at 4.5 µg/m³, PM10 at 4.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 1.00
- Wind
- light
- Recent rain
- 1h 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).
September dries up ditches or breaks down bridges.
- Moonrise
- 4:36 PM
- Moonset
- 1:31 AM
- In sign
- ♑︎ Capricorn
Waldorf at a glance
- Today vs. normal: Today averages 72°F (high 75°F, low 68°F), 7°F above the 65°F normal for Sep 21
- Last frost: April 17 (1991–2020 median, NOAA station 21 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, winter squash
15-Day Forecast — Waldorf
- Mon75°68°25%
- Tue69°59°87%
- Wed64°58°73%
- Thu62°54°28%
- Fri71°49°18%
- Sat74°53°18%
- Sun72°59°8%
- Mon76°55°5%
- Tue77°53°9%
- Wed84°59°18%
- Thu88°62°14%
- Fri80°64°11%
- Sat85°61°11%
- Sun85°70°25%
- Mon76°53°26%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Waldorf
Interactive wind and temperature map centered on Waldorf — it loads in your browser. Open the full weather map.
Right now in the garden
Fall planting + final harvests
As of September 21, the season's first frost (typically October 27) is approaching. Pick what frost-tender plants still carry before the next cold front. This city's planting calendar for September: plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, and winter squash.
SPC Convective Outlook
Storm Prediction Center — Waldorf
SPC includes Waldorf in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook.
Sun & seasons in Waldorf
Waldorf sits in Charles County, where the year’s longest day runs 14h 52m of daylight and its shortest just 9h 28m — a swing of +5h 24m 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 51 miles to the NNE. The nearest town Waldorf tracks is Baltimore, roughly 51 miles to the NNE.
Air quality in Waldorf
Air quality in Waldorf’s county has trended dirtier since 2020; its cleanest year on record was 2020 (median AQI 34). See the full air-quality history for Waldorf.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| March | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes | radishes |
| May | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, summer squash |
| July | tomatoes, peppers, beans, squash | lettuce, peas, tomatoes, peppers, beans, summer squash, garlic |
| August | beans, squash, fall brassicas, carrots | tomatoes, peppers, beans, summer squash, winter squash |
| September | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| October | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| November | — | fall brassicas, carrots |
A year in weather
July is Waldorf's warmest stretch (~76°F) and January its coldest (~35°F); precipitation crests in September at 4.9 inches and ebbs in February to 3.0 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 35° | 3.3″ | 10 |
| February | 37° | 3.0″ | 9 |
| March | 44° | 4.2″ | 10 |
| April | 55° | 3.3″ | 10 |
| May | 63° | 4.3″ | 11 |
| June | 71° | 4.2″ | 10 |
| July | 76° | 4.6″ | 10 |
| August | 74° | 4.8″ | 9 |
| September | 67° | 4.9″ | 9 |
| October | 56° | 4.2″ | 8 |
| November | 46° | 3.3″ | 8 |
| December | 38° | 4.0″ | 9 |
Regional context
Similar climates Bensville, MD, La Plata, MD, Bryantown, MD
Waldorf's climate, from NOAA NCEI 1991-2020 station normals, pairs 35°F Januarys with 76°F Julys — a 41°F swing. About 48.1 inches of precipitation falls over roughly 115 days a year.
Rainfall in Waldorf splits evenly between the seasons: September tops out at 4.9 inches over 8.6 rainy days, and February logs 3.0 inches across 8.8 — neither half of Waldorf's year dominates. It is a balanced pattern Waldorf shares with places like Bensville, MD, La Plata, MD and Bryantown, MD.
By April 17 the frosts ease in Waldorf, opening the season for peas, lettuce, spinach, and radishes. Warm-soil crops in Waldorf wait about two weeks past Waldorf's last frost, once the soil warms. Around October 27, freezing nights resume in Waldorf and tender crops must come in. Sheltered Waldorf yards can escape a light frost.
Similar climates: Bensville, MD, La Plata, MD, Bryantown, MD, Brandywine, MD, Accokeek, MD.
Frequently asked
- When does it freeze in Waldorf?
- Frost typically leaves Waldorf by April 17 and returns to Waldorf near October 27.
- What is the rainy season in Waldorf?
- Rainfall in Waldorf peaks in September near 4.9 inches, out of about 48 inches annually.
- What is the warmest month in Waldorf?
- July is Waldorf's warmest month, averaging about 76°F.
- What is the coldest month in Waldorf?
- Waldorf bottoms out in January, with a mean near 35°F.
- When can I start a vegetable garden in Waldorf?
- Waldorf's last frost (April 17) cues hardy greens; in Waldorf, hold heat-lovers two weeks past.
- How many rainy days does Waldorf get?
- Waldorf averages about 115 days with measurable rain or snow each year.
- What hardiness zone is Waldorf?
- Waldorf sits in the USDA zone set by January lows near 35°F; the USDA ZIP tool gives the band.
- What is the 10-day forecast for Waldorf?
- Waldorf'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 Waldorf?
- See this week's day-by-day rain chances for Waldorf in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Waldorf?
- Current conditions for Waldorf and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Waldorf forecast updated?
- The Waldorf forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Waldorf?
- Today's sunrise and sunset times for Waldorf 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 Waldorf?
- The next few days in Waldorf's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Waldorf sits at 38.6°N; its climate zone is warm-summer humid continental (Köppen approximation).
ZIP codes in Waldorf
- 20601
- 20602
- 20603
- 20604
- 20675
- 20695