Penn State Erie, Pennsylvania Weather
Fireflies rise from the lawn. Day 76 of spring. Read this microseason across nine climate regions →
Penn State Erie weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Partly Cloudy——75°52°—
- ThursdayJun 4Overcast——79°57°+4°
- FridayJun 5Overcast——77°64°-2°
- SaturdayJun 6Light Showers74%0.04″73°63°-4°
- SundayJun 7Light Drizzle53%—70°60°-3°
- MondayJun 8Clear——76°54°+6°
- TuesdayJun 9Clear——82°59°+6°
Ozone at AQI 49 — peak already passed at 1 PM under clear skies. AQI up 5 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 49 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 49
- UV peak
- 6.2 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 49
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
- 3:19 AM
- Moonset
- 12:08 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Penn State Erie at a glance
- Today vs. normal: 74°F — typical for the season
- Last frost: April 29 (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.
SPC Convective Outlook
Storm Prediction Center — Penn State Erie
SPC has placed Penn State Erie 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 | — | — |
| May | lettuce, peas, spinach, radishes | lettuce, peas, radishes |
| June | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | tomatoes, peppers, beans, squash, fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | — | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Penn State Erie's warmest month is July (~73°F mean) and its coldest is January (~28°F). Rainfall peaks in October (4.4 inches) and bottoms out in February (2.5 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 28° | 3.4″ | 10 |
| February | 29° | 2.5″ | 8 |
| March | 36° | 3.1″ | 8 |
| April | 47° | 3.5″ | 9 |
| May | 59° | 3.5″ | 8 |
| June | 68° | 3.7″ | 7 |
| July | 73° | 3.3″ | 7 |
| August | 72° | 3.4″ | 6 |
| September | 65° | 4.3″ | 7 |
| October | 54° | 4.4″ | 10 |
| November | 44° | 3.8″ | 9 |
| December | 34° | 4.2″ | 11 |
Frequently asked
- When does it freeze in Penn State Erie?
- Penn State Erie's last spring frost typically falls around mid-May, and the first fall frost arrives around mid-October.
- What is the rainy season in Penn State Erie?
- October is the wettest month with about 4.4 inches of rain on average; the city receives roughly 43 inches annually.
- What is the warmest month in Penn State Erie?
- July is typically warmest, averaging about 73°F.
- What is the coldest month in Penn State Erie?
- January is typically coldest, averaging about 28°F.
- When can I start a vegetable garden in Penn State Erie?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-May); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Penn State Erie get?
- Penn State Erie averages about 99 rainy days per year.
- What hardiness zone is Penn State Erie?
- Penn State Erie'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
Penn State Erie, Pennsylvania sits in a warm-summer humid continental climate zone. January means hover near 28°F while July averages 73°F — a 45°F seasonal swing.
Across the year, Penn State Erie receives about 43 inches of precipitation spread over roughly 99 rainy days.
The rhythm of the year is set by latitude (42.1°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.