Middletown, Maryland Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Middletown weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Partly Cloudy——85°56°—
- FridayJun 5Overcast——89°66°+4°
- SaturdayJun 6Overcast25%—87°67°-2°
- SundayJun 7Light Drizzle25%—82°65°-5°
- MondayJun 8Overcast——77°59°-5°
- TuesdayJun 9Partly Cloudy——76°53°-1°
- WednesdayJun 10Overcast10%—81°55°+5°
Ozone at AQI 71 now. AQI up 9 over the last 6 hours (gradual rise). With UV 8.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 78 by mid-afternoon.
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 71 now. With UV 8.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 78 by mid-afternoon.
- Present
- AQI 71
- UV peak
- 8.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 78
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:36 AM
- Moonset
- 1:11 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
Middletown at a glance
- Today vs. normal: 6°F above the seasonal normal for this latitude
- Last frost: April 13 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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 — Middletown
SPC has placed Middletown in the General Thunderstorms category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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.
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
Middletown's warmest month is July (~79°F mean) and its coldest is January (~35°F). Rainfall peaks in September (5.8 inches) and bottoms out in January (2.6 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 35° | 2.6″ | 6 |
| February | 38° | 3.0″ | 5 |
| March | 46° | 3.7″ | 9 |
| April | 57° | 3.5″ | 7 |
| May | 66° | 4.0″ | 7 |
| June | 74° | 4.3″ | 7 |
| July | 79° | 3.9″ | 7 |
| August | 77° | 2.9″ | 5 |
| September | 70° | 5.8″ | 7 |
| October | 58° | 3.3″ | 4 |
| November | 47° | 2.7″ | 5 |
| December | 39° | 4.0″ | 7 |
Regional context
Middletown sits within a warm-summer humid continental climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Baltimore, MD, Hagerstown, MD, Frederick, MD, Waldorf, MD, Columbia, MD.
Frequently asked
- When does it freeze in Middletown?
- Middletown's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Middletown?
- September is the wettest month with about 5.8 inches of rain on average; the city receives roughly 44 inches annually.
- What is the warmest month in Middletown?
- July is typically warmest, averaging about 79°F.
- What is the coldest month in Middletown?
- January is typically coldest, averaging about 35°F.
- When can I start a vegetable garden in Middletown?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-April); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Middletown get?
- Middletown averages about 76 rainy days per year.
- What hardiness zone is Middletown?
- Middletown's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Middletown, Maryland sits in a warm-summer humid continental climate zone. January means hover near 35°F while July averages 79°F — a 44°F seasonal swing.
Across the year, Middletown receives about 44 inches of precipitation spread over roughly 76 rainy days.
The rhythm of the year is set by latitude (39.4°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.