Essex, Maryland Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Essex weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle32%—100°79°—
- SundayJul 5Light Drizzle54%0.01″94°76°-6°
- MondayJul 6Drizzle81%—83°75°-11°
- TuesdayJul 7Thunderstorm76%—85°73°+2°
- WednesdayJul 8Light Showers35%0.17″79°69°-6°
- ThursdayJul 9Overcast13%—90°71°+11°
- FridayJul 10Overcast41%—93°76°+3°
AQI 182 (Unhealthy), driven by Ozone. AQI up 117 in the last 6 hours — air quality is degrading. Ozone at AQI 117. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
LIMIT OUTDOORS Limit prolonged outdoor exertion. Sensitive groups should avoid outdoor exertion. Consider rescheduling outdoor activities until AQI improves.
What's driving it
Ozone × UV × Sky
Ozone at AQI 117. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 117
- UV peak
- 0.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 14
PM × Wind × Precip
PM2.5 at 9.1 µg/m³, PM10 at 9.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.96
- Wind
- light
- Recent rain
- 0h 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
- 10:58 PM
- Moonset
- 10:10 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Essex at a glance
- Today vs. normal: 21°F above the seasonal normal for this latitude
- Last frost: April 12 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 21221
16-Day Forecast — Essex
- Sat100°79°32%
- Sun94°76°54%
- Mon83°75°81%
- Tue85°73°76%
- Wed79°69°35%
- Thu90°71°13%
- Fri93°76°41%
- Sat91°74°35%
- Sun83°70°25%
- Mon77°70°18%
- Tue88°68°18%
- Wed88°69°37%
- Thu92°74°45%
- Fri90°76°46%
- Sat91°74°40%
- Sun92°76°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 — Essex
SPC has placed Essex 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
Essex's warmest month is July (~78°F mean) and its coldest is January (~32°F). Rainfall peaks in December (4.5 inches) and bottoms out in October (3.1 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 32° | 3.8″ | 14 |
| February | 35° | 3.2″ | 14 |
| March | 43° | 3.8″ | 16 |
| April | 54° | 4.0″ | 17 |
| May | 62° | 3.8″ | 17 |
| June | 72° | 4.0″ | 17 |
| July | 78° | 3.2″ | 16 |
| August | 76° | 4.4″ | 17 |
| September | 70° | 3.9″ | 14 |
| October | 59° | 3.1″ | 12 |
| November | 46° | 4.0″ | 14 |
| December | 37° | 4.5″ | 15 |
Regional context
In Essex, NOAA NCEI 1991-2020 normals put January near 32°F and July near 78°F — a 46°F seasonal arc — with about 45.6 inches of precipitation over 184 rainy or snowy days.
Rainfall in Essex stays even across the calendar: December tops out at 4.5 inches over 14.9 rainy days, and October still logs 3.1 inches across 11.9 — a narrow range for Essex. That lines Essex up with places like Middle River, MD, Bowleys Quarters, MD and Dundalk, MD, fed by overlapping storm tracks.
Around mid-April, Essex sheds its freezing nights — peas, lettuce, spinach, and radishes go into Essex's beds. Essex's heat-lovers — tomatoes, peppers, squash — hold off until Essex's frost risk clears, 10-14 days on. The season ends by mid-November in Essex, once hard frosts set back in. Essex's low ground holds frost later into spring than Essex's benches, which run 3-5 days ahead.
Similar climates: Middle River, MD, Bowleys Quarters, MD, Dundalk, MD, Rosedale, MD, Rossville, MD.
Frequently asked
- When does it freeze in Essex?
- In Essex, expect the last spring frost near mid-April; Essex's first autumn frost comes around mid-November.
- What is the rainy season in Essex?
- December is the wettest month in Essex, about 4.5 inches on average; the year totals roughly 46 inches.
- What is the warmest month in Essex?
- On average July tops the year in Essex at about 78°F.
- What is the coldest month in Essex?
- The coldest stretch in Essex falls in January, around 32°F on average.
- When can I start a vegetable garden in Essex?
- In Essex, sow peas and hardy greens around mid-April; Essex's tomatoes and peppers wait two weeks more.
- How many rainy days does Essex get?
- Essex averages about 184 days with measurable rain or snow each year.
- What hardiness zone is Essex?
- Since January in Essex averages 32°F, Essex's USDA zone follows that floor — confirm it by ZIP.
- What is the 10-day forecast for Essex?
- Essex'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 Essex?
- See this week's day-by-day rain chances for Essex in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Essex?
- Current conditions for Essex and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Essex forecast updated?
- The Essex forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Essex?
- Today's sunrise and sunset times for Essex 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 Essex?
- The next few days in Essex's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
The warm-summer humid continental climate of Essex, Maryland carries typical Januarys near 32°F and Julys around 78°F — 46°F of seasonal travel.
Yearly precipitation in Essex totals around 46 inches, spread over about 184 days of rain or snow.
From 39.3°N, Essex sees a 46°F seasonal swing that governs Essex's planting and frost windows.
ZIP codes in Essex
- 21221