Hunterstown, Pennsylvania Weather
Fireflies rise from the lawn. Day 76 of spring. Read this microseason across nine climate regions →
Hunterstown weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Clear——80°51°—
- ThursdayJun 4Overcast——84°58°+4°
- FridayJun 5Overcast——83°60°-1°
- SaturdayJun 6Overcast17%—87°65°+4°
- SundayJun 7Showers44%0.01″78°64°-9°
- MondayJun 8Foggy24%—74°54°-4°
- TuesdayJun 9Partly Cloudy11%—75°49°+1°
Ozone at AQI 56 — peak already passed at 1 PM under clear skies. AQI up 14 over the last 6 hours (gradual rise). 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 56 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 56
- UV peak
- 5.9 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 56
PM × Wind × Precip
PM2.5 at 4.8 µg/m³ (AQI 27) with a 0.75 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.75
- 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).
The higher the clouds, the finer the weather.
- Moonrise
- 2:58 AM
- Moonset
- 12:05 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Hunterstown at a glance
- Today vs. normal: 4°F above the seasonal normal for this latitude
- Last frost: April 15 (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
Hunterstown's warmest month is July (~75°F mean) and its coldest is January (~30°F). Rainfall peaks in September (5.2 inches) and bottoms out in February (2.6 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 30° | 3.5″ | 7 |
| February | 32° | 2.6″ | 5 |
| March | 40° | 3.6″ | 7 |
| April | 52° | 3.9″ | 7 |
| May | 62° | 4.4″ | 8 |
| June | 71° | 4.2″ | 7 |
| July | 75° | 3.6″ | 7 |
| August | 73° | 3.7″ | 6 |
| September | 66° | 5.2″ | 6 |
| October | 55° | 3.9″ | 6 |
| November | 44° | 3.2″ | 5 |
| December | 35° | 3.4″ | 6 |
Regional context
Hunterstown's baseline climate, derived from NOAA NCEI 1991-2020 normals at the nearest reporting station, swings from a January mean of 30°F to a July mean of 75°F — a 45°F seasonal arc typical of the mid-latitude bands. Annual precipitation runs about 45.3 inches spread across roughly 77 days with measurable rain or snow each year.
Rainfall stays relatively even across the calendar: September tops out at 5.2 inches across 6.4 days with measurable rain, and February settles around 2.6 inches across 5.4 rainy days — a comparatively narrow seasonal range. The balanced distribution lines Hunterstown up with places like Table Rock, PA, Heidlersburg, PA and Bonneauville, PA, all of which run on overlapping storm tracks rather than a single seasonal moisture source.
The frost-sensitive growing window opens around mid-April, when overnight lows reliably clear freezing for cool-season crops like kale, peas, spinach, and parsnips. Warm-soil crops — tomatoes, peppers, eggplant — wait until soil temperatures reach the mid-50s°F, usually two weeks past the last-frost date. 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 Hunterstown 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: Table Rock, PA, Heidlersburg, PA, Bonneauville, PA, Lake Heritage, PA, Gettysburg, PA.
Frequently asked
- When does it freeze in Hunterstown?
- Hunterstown's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Hunterstown?
- September is the wettest month with about 5.2 inches of rain on average; the city receives roughly 45 inches annually.
- What is the warmest month in Hunterstown?
- July is typically warmest, averaging about 75°F.
- What is the coldest month in Hunterstown?
- January is typically coldest, averaging about 30°F.
- When can I start a vegetable garden in Hunterstown?
- 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 Hunterstown get?
- Hunterstown averages about 77 rainy days per year.
- What hardiness zone is Hunterstown?
- Hunterstown'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
Hunterstown, Pennsylvania sits in a warm-summer humid continental climate zone. January means hover near 30°F while July averages 75°F — a 45°F seasonal swing.
Across the year, Hunterstown receives about 45 inches of precipitation spread over roughly 77 rainy days.
The rhythm of the year is set by latitude (39.9°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.