Hagerstown, Maryland Weather
Fireflies rise from the lawn. Day 76 of spring. Read this microseason across nine climate regions →
Hagerstown weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Mostly Clear——80°51°—
- ThursdayJun 4Overcast——85°55°+5°
- FridayJun 5Overcast——84°59°-1°
- SaturdayJun 6Light Drizzle18%—87°63°+3°
- SundayJun 7Showers39%—79°63°-8°
- MondayJun 8Overcast20%—73°57°-6°
- TuesdayJun 9Partly Cloudy11%—76°49°+3°
Ozone at AQI 56 now. AQI up 9 over the last 6 hours (gradual rise). With UV 7.6 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 57 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 56 now. With UV 7.6 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 57 by mid-afternoon.
- Present
- AQI 56
- UV peak
- 7.6 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 57
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).
The higher the clouds, the finer the weather.
- Moonrise
- 2:59 AM
- Moonset
- 12:08 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Hagerstown at a glance
- Today vs. normal: 4°F above the seasonal normal for this latitude
- Last frost: April 14 (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 3, 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.
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 brings Hagerstown's peak warmth with mean temperatures around 76°F, while January delivers the year's coldest conditions at roughly 31°F. Rainfall reaches its maximum in September at 4.8 inches and drops to its lowest point in February with 2.7 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 31° | 3.2″ | 11 |
| February | 34° | 2.7″ | 9 |
| March | 42° | 3.9″ | 13 |
| April | 53° | 3.9″ | 13 |
| May | 64° | 4.3″ | 14 |
| June | 72° | 3.4″ | 11 |
| July | 76° | 3.7″ | 12 |
| August | 75° | 3.7″ | 12 |
| September | 67° | 4.8″ | 16 |
| October | 55° | 3.4″ | 11 |
| November | 44° | 2.9″ | 10 |
| December | 36° | 3.7″ | 12 |
Regional context
Located within a warm-summer humid continental climate region, Hagerstown shares temperature ranges, seasonal patterns, and growing conditions with other nearby cities in this climate zone.
Similar climates: Baltimore, MD, Frederick, MD, Waldorf, MD, Columbia, MD, Germantown, MD.
Naturalist notes
May brings the return of ruby-throated hummingbirds to Hagerstown's gardens and woodlands after their long migration from Central America.
Dogwood trees typically reach full bloom during late April, their white bracts creating canopies throughout the region's forests and neighborhoods.
Frequently asked
- When does it freeze in Hagerstown?
- Spring's final frost typically occurs around mid-April in Hagerstown, while the first fall frost usually arrives around mid-November.
- What is the rainy season in Hagerstown?
- September records the highest monthly rainfall with about 4.8 inches on average, contributing to the city's annual total of roughly 44 inches.
- What is the warmest month in Hagerstown?
- July typically brings the year's warmest temperatures, averaging about 76°F.
- What is the coldest month in Hagerstown?
- January delivers the coldest temperatures of the year, averaging about 31°F.
- When can I start a vegetable garden in Hagerstown?
- Cool-season crops like peas and lettuce can be planted around the last spring frost in mid-April, while warm-season varieties such as tomatoes and peppers should wait until 1–2 weeks after.
- How many rainy days does Hagerstown get?
- Hagerstown records about 144 rainy days per year on average.
- What hardiness zone is Hagerstown?
- Hagerstown's USDA hardiness zone depends on its lowest average winter temperature; the USDA's online lookup tool using the city ZIP code provides the current zone designation.
Climate
Hagerstown, Maryland experiences a warm-summer humid continental climate. Winter temperatures in January hover near 31°F, while July averages reach 76°F, creating a 45°F seasonal swing.
Annual precipitation totals about 44 inches, falling across roughly 144 rainy days throughout the year.
Location at 39.6°N latitude, along with proximity to large water bodies and local elevation, determines the rhythm of seasons. These factors influence plant growth cycles, frost timing, and daily weather patterns.