Colmar Manor, Maryland Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Colmar Manor weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Drizzle23%0.03″102°78°—
- SundayJul 5Heavy Rain49%2.3″98°74°-4°
- MondayJul 6Light Drizzle82%—86°75°-12°
- TuesdayJul 7Thunderstorm82%0.29″90°72°+4°
- WednesdayJul 8Light Rain37%0.20″78°70°-12°
- ThursdayJul 9Overcast12%—93°69°+15°
- FridayJul 10Drizzle41%0.06″93°73°0°
AQI 123 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 68 in the last 6 hours — air quality is degrading. Ozone at AQI 108 — 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 108 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 108
- UV peak
- 2.0 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 108
PM × Wind × Precip
PM2.5 at 9.2 µg/m³ (AQI 51) with a 0.90 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.90
- 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
- 10:59 PM
- Moonset
- 10:12 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Colmar Manor at a glance
- Today vs. normal: 29°F above the seasonal normal for this latitude
- Last frost: April 10 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Colmar Manor
- Sat102°78°23%
- Sun98°74°49%
- Mon86°75°82%
- Tue90°72°82%
- Wed78°70°37%
- Thu93°69°12%
- Fri93°73°41%
- Sat93°70°38%
- Sun83°72°22%
- Mon82°70°20%
- Tue88°67°18%
- Wed95°71°33%
- Thu95°72°37%
- Fri92°77°42%
- Sat95°73°44%
- Sun91°72°46%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 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 — Colmar Manor
SPC has placed Colmar Manor 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 185 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
Colmar Manor peaks at about 78°F in July and bottoms near 32°F in January; August brings the heaviest rain (4.2 inches) and October the least (2.6 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 32° | 3.3″ | 13 |
| February | 35° | 2.8″ | 12 |
| March | 44° | 3.4″ | 15 |
| April | 55° | 3.7″ | 17 |
| May | 63° | 3.5″ | 18 |
| June | 72° | 3.9″ | 17 |
| July | 78° | 3.2″ | 17 |
| August | 77° | 4.2″ | 18 |
| September | 70° | 3.4″ | 14 |
| October | 59° | 2.6″ | 11 |
| November | 46° | 3.6″ | 12 |
| December | 37° | 3.9″ | 14 |
Frequently asked
- When does it freeze in Colmar Manor?
- Colmar Manor's last spring frost lands near mid-April, and in Colmar Manor the first fall frost follows around mid-November.
- What is the rainy season in Colmar Manor?
- Rainfall in Colmar Manor peaks in August near 4.2 inches, out of about 42 inches annually.
- What is the warmest month in Colmar Manor?
- July is Colmar Manor's warmest month, averaging about 78°F.
- What is the coldest month in Colmar Manor?
- Colmar Manor bottoms out in January, with a mean near 32°F.
- When can I start a vegetable garden in Colmar Manor?
- Time tomatoes in Colmar Manor for two weeks after mid-April; peas and greens start at Colmar Manor's frost line.
- How many rainy days does Colmar Manor get?
- Expect roughly 175 wet days a year in Colmar Manor.
- What hardiness zone is Colmar Manor?
- Colmar Manor sits in the USDA zone set by January lows near 32°F; the USDA ZIP tool gives the band.
- What is the 10-day forecast for Colmar Manor?
- Colmar Manor'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 Colmar Manor?
- See this week's day-by-day rain chances for Colmar Manor in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Colmar Manor?
- Current conditions for Colmar Manor and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Colmar Manor forecast updated?
- The Colmar Manor forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Colmar Manor?
- Today's sunrise and sunset times for Colmar Manor 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 Colmar Manor?
- The next few days in Colmar Manor's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Colmar Manor, Maryland occupies a warm-summer humid continental zone, with January means near 32°F and July around 78°F — a 46°F swing.
Rain and snow bring Colmar Manor roughly 42 inches a year across approximately 175 measurable-precipitation days.
The 46°F gap between Colmar Manor's summer and winter, at 38.9°N, shapes Colmar Manor's frost calendar.
ZIP codes in Colmar Manor
- 20722
- 20781