Layhill, Maryland Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Layhill weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle25%0.01″99°77°—
- SundayJul 5Heavy Showers52%0.76″94°72°-5°
- MondayJul 6Light Showers76%0.02″83°72°-11°
- TuesdayJul 7Thunderstorm76%0.53″88°69°+5°
- WednesdayJul 8Rain37%0.17″77°69°-11°
- ThursdayJul 9Overcast12%—91°67°+14°
- FridayJul 10Light Drizzle43%0.04″90°72°-1°
AQI 89 (Moderate), driven by Ozone. AQI up 36 in the last 6 hours — air quality is degrading. Ozone at AQI 78 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
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 78 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 78
- UV peak
- 2.1 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 78
PM × Wind × Precip
PM2.5 at 8.6 µg/m³, PM10 at 9.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.91
- Wind
- calm
- 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).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:00 PM
- Moonset
- 10:12 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Layhill at a glance
- Today vs. normal: 26°F above the seasonal normal for this latitude
- Last frost: April 11 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Layhill
- Sat99°77°25%
- Sun94°72°52%
- Mon83°72°76%
- Tue88°69°76%
- Wed77°69°37%
- Thu91°67°12%
- Fri90°72°43%
- Sat90°69°36%
- Sun81°68°22%
- Mon80°69°21%
- Tue86°66°17%
- Wed91°69°33%
- Thu94°70°37%
- Fri88°73°42%
- Sat91°71°44%
- Sun87°71°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 — Layhill
SPC has placed Layhill 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
July is Layhill's warmest stretch (~78°F) and January its coldest (~32°F); precipitation crests in August at 4.2 inches and ebbs in October to 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 |
Regional context
Layhill's climate, from NOAA NCEI 1991-2020 station normals, pairs 32°F Januarys with 78°F Julys — a 46°F swing. About 41.5 inches of precipitation falls over roughly 175 days a year.
Rainfall in Layhill stays even across the calendar: August tops out at 4.2 inches over 17.8 rainy days, and October still logs 2.6 inches across 11.1 — a narrow range for Layhill. That even rhythm groups Layhill with places like Glenmont, MD, Leisure World, MD and Aspen Hill, MD.
By mid-April the frosts ease in Layhill, opening the season for peas, lettuce, spinach, and radishes. Warm-soil crops in Layhill wait about two weeks past Layhill's last frost, once the soil warms. It shuts near mid-November, when freezes return to Layhill and tender plants need cover. Within Layhill, cold-air pooling chills low spots by 5-10°F, shifting Layhill's local frost dates.
Similar climates: Glenmont, MD, Leisure World, MD, Aspen Hill, MD, Colesville, MD, Cloverly, MD.
Frequently asked
- When does it freeze in Layhill?
- In Layhill, expect the last spring frost near mid-April; Layhill's first autumn frost comes around mid-November.
- What is the rainy season in Layhill?
- Rainfall in Layhill peaks in August near 4.2 inches, out of about 42 inches annually.
- What is the warmest month in Layhill?
- July is Layhill's warmest month, averaging about 78°F.
- What is the coldest month in Layhill?
- Layhill bottoms out in January, with a mean near 32°F.
- When can I start a vegetable garden in Layhill?
- Time tomatoes in Layhill for two weeks after mid-April; peas and greens start at Layhill's frost line.
- How many rainy days does Layhill get?
- Layhill averages about 175 days with measurable rain or snow each year.
- What hardiness zone is Layhill?
- Layhill's USDA zone comes from its January mean (32°F); enter the ZIP on the USDA lookup for the number.
- What is the 10-day forecast for Layhill?
- Layhill'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 Layhill?
- See this week's day-by-day rain chances for Layhill in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Layhill?
- Current conditions for Layhill and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Layhill forecast updated?
- The Layhill forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Layhill?
- Today's sunrise and sunset times for Layhill 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 Layhill?
- The next few days in Layhill's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Layhill, Maryland has a warm-summer humid continental climate: January averages roughly 32°F, July about 78°F, 46°F between them.
In a typical year Layhill records about 42 inches of precipitation on around 175 days.
Latitude 39.1°N gives Layhill its 46°F swing, and with it the rhythm of Layhill's growing season.
ZIP codes in Layhill
- 20906