Marion, Pennsylvania Weather
Fireflies rise from the lawn. Day 78 of spring. Read this microseason across nine climate regions →
Marion weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Clear——84°54°—
- FridayJun 5Overcast——87°60°+3°
- SaturdayJun 6Heavy Drizzle45%0.04″86°65°-1°
- SundayJun 7Overcast45%—84°64°-2°
- MondayJun 8Overcast——76°56°-8°
- TuesdayJun 9Overcast——76°53°0°
- WednesdayJun 10Overcast17%—79°57°+3°
AQI 84 (Moderate), driven by Ozone. AQI up 23 in the last 6 hours — air quality is degrading. Ozone at AQI 68. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
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 68. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 68
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 8
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
- 4:10 AM
- Moonset
- 2:16 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
Marion at a glance
- Today vs. normal: 5°F below 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 5, 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 — Marion
SPC has placed Marion in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3MRGLMarginal Risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
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
Marion's warmest month is July (~76°F mean) and its coldest is January (~31°F). Rainfall peaks in September (4.8 inches) and bottoms out in February (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 |
Frequently asked
- When does it freeze in Marion?
- Marion's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Marion?
- September is the wettest month with about 4.8 inches of rain on average; the city receives roughly 44 inches annually.
- What is the warmest month in Marion?
- July is typically warmest, averaging about 76°F.
- What is the coldest month in Marion?
- January is typically coldest, averaging about 31°F.
- When can I start a vegetable garden in Marion?
- 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 Marion get?
- Marion averages about 144 rainy days per year.
- What hardiness zone is Marion?
- Marion'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
Marion, Pennsylvania sits in a warm-summer humid continental climate zone. January means hover near 31°F while July averages 76°F — a 45°F seasonal swing.
Across the year, Marion receives about 44 inches of precipitation spread over roughly 144 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.