Frankford, Delaware Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Frankford weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——81°53°—
- FridayJun 5Overcast——93°60°+12°
- SaturdayJun 6Overcast——88°66°-5°
- SundayJun 7Overcast28%—89°70°+1°
- MondayJun 8Drizzle11%—69°55°-20°
- TuesdayJun 9Overcast——82°51°+13°
- WednesdayJun 10Partly Cloudy13%—87°59°+5°
Ozone at AQI 36 now. AQI down 18 over the last 6 hours — air quality is improving sharply. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 16 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 36 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 16 by mid-afternoon.
- Present
- AQI 36
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 16
PM × Wind × Precip
PM2.5 at 5.5 µg/m³ (AQI 31) with a 0.76 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.76
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:24 AM
- Moonset
- 1:05 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Frankford at a glance
- Today vs. normal: 21°F below the seasonal normal for this latitude
- Last frost: April 7 (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 — Frankford
SPC has placed Frankford 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
Frankford's warmest month is July (~79°F mean) and its coldest is January (~37°F). Rainfall peaks in September (4.5 inches) and bottoms out in February (2.6 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 37° | 3.0″ | 6 |
| February | 39° | 2.6″ | 6 |
| March | 46° | 3.9″ | 7 |
| April | 56° | 3.3″ | 7 |
| May | 65° | 3.6″ | 7 |
| June | 74° | 4.1″ | 7 |
| July | 79° | 4.1″ | 6 |
| August | 77° | 4.0″ | 6 |
| September | 70° | 4.5″ | 6 |
| October | 59° | 4.1″ | 6 |
| November | 49° | 3.2″ | 5 |
| December | 41° | 3.5″ | 7 |
Regional context
Frankford's baseline climate, derived from NOAA NCEI 1991-2020 normals at the nearest reporting station, swings from a January mean of 37°F to a July mean of 79°F — a 42°F seasonal arc typical of the mid-latitude bands. Annual precipitation runs about 43.9 inches spread across roughly 73 days with measurable rain or snow each year.
Rainfall stays relatively even across the calendar: September tops out at 4.5 inches across 5.5 days with measurable rain, and February settles around 2.6 inches across 5.7 rainy days — a comparatively narrow seasonal range. That even-rainfall rhythm puts Frankford alongside places like Dagsboro, DE, Selbyville, DE and Millville, DE — places without a single dominant storm season, where moisture arrives steadily across the calendar.
The frost-sensitive growing window opens around mid-April, when overnight lows reliably clear freezing for cool-season crops like peas, lettuce, spinach, and radishes. Heat-loving transplants like tomatoes, peppers, and squash generally hold off for another 10-14 days to clear the last spring frost risk window. The window closes around mid-November, when overnight lows resume dipping below freezing and frost-tender plants need protection or harvest. Those dates are 30-year averages; the actual frost-free window in a given year can vary by 10-14 days at either end. Neighborhood-scale variation in elevation and cold-air pooling means the practical last-frost date inside Frankford can lag the regional mean by 5-10 days in low spots, and a bench position with good cold-air drainage can run a week ahead.
Similar climates: Dagsboro, DE, Selbyville, DE, Millville, DE, Millsboro, DE, Ocean View, DE.
Frequently asked
- When does it freeze in Frankford?
- Frankford's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Frankford?
- September is the wettest month with about 4.5 inches of rain on average; the city receives roughly 44 inches annually.
- What is the warmest month in Frankford?
- July is typically warmest, averaging about 79°F.
- What is the coldest month in Frankford?
- January is typically coldest, averaging about 37°F.
- When can I start a vegetable garden in Frankford?
- 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 Frankford get?
- Frankford averages about 73 rainy days per year.
- What hardiness zone is Frankford?
- Frankford'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
Frankford, Delaware sits in a warm-summer humid continental climate zone. January means hover near 37°F while July averages 79°F — a 42°F seasonal swing.
Across the year, Frankford receives about 44 inches of precipitation spread over roughly 73 rainy days.
The rhythm of the year is set by latitude (38.5°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.