Mount Penn, Pennsylvania Weather
Honeysuckle sweetens the night. Day 89 of spring. Read this microseason across nine climate regions →
Mount Penn weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast50%—76°63°—
- TuesdayJun 16Overcast——78°54°+2°
- WednesdayJun 17Overcast34%—80°61°+2°
- ThursdayJun 18Light Drizzle34%0.02″90°66°+10°
- FridayJun 19Light Drizzle22%—81°63°-9°
- SaturdayJun 20Overcast——76°57°-5°
- SundayJun 21Overcast——78°54°+2°
AQI 33 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
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).








































Cut your thistles before St. John, you will have two instead of one.
- Moonrise
- 6:44 AM
- Moonset
- 9:51 PM
- In sign
- ♋︎ Cancer
Honeysuckle sweetens the night
Mount Penn at a glance
- Today vs. normal: 12°F below the seasonal normal for this latitude
- Last frost: April 18 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Mount Penn
- Mon76°63°50%
- Tue78°54°0%
- Wed80°61°34%
- Thu90°66°34%
- Fri81°63°22%
- Sat76°57°1%
- Sun78°54°8%
- Mon81°60°39%
- Tue75°59°38%
- Wed77°55°15%
- Thu85°59°29%
- Fri88°65°36%
- Sat90°70°39%
- Sun80°66°35%
- Mon94°67°35%
- Tue91°70°43%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 16, 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 — Mount Penn
SPC has placed Mount Penn 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.
Microseason · June 16–20
Honeysuckle sweetens the night
Japanese honeysuckle perfumes parks after dark.
Day 167 of 365 · Wedge 34 of 72
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
The year in Mount Penn tops out in July (~76°F) and dips lowest in January (~29°F), with May wettest at 4.0 inches and February driest at 2.8 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 29° | 3.2″ | 14 |
| February | 32° | 2.8″ | 13 |
| March | 40° | 3.5″ | 16 |
| April | 52° | 3.8″ | 17 |
| May | 61° | 4.0″ | 18 |
| June | 70° | 3.9″ | 17 |
| July | 76° | 3.3″ | 17 |
| August | 75° | 3.8″ | 17 |
| September | 68° | 3.6″ | 14 |
| October | 57° | 3.0″ | 12 |
| November | 43° | 3.6″ | 14 |
| December | 34° | 4.0″ | 14 |
Regional context
Per NOAA NCEI 1991-2020 normals, Mount Penn runs from a 29°F January mean to 76°F in July, a 47°F seasonal spread, with near 42.6 inches of precipitation across about 183 wet days.
Rainfall in Mount Penn stays even across the calendar: May tops out at 4.0 inches over 18.4 rainy days, and February still logs 2.8 inches across 13.4 — a narrow range for Mount Penn. That even rhythm groups Mount Penn with places like Pennside, PA, St. Lawrence, PA and Reiffton, PA.
Around mid-April, Mount Penn sheds its freezing nights — kale, peas, spinach, and parsnips go into Mount Penn's beds. Mount Penn's heat-lovers — tomatoes, peppers, squash — hold off until Mount Penn's frost risk clears, 10-14 days on. Frost returns to Mount Penn near mid-November, ending the tender-crop season. A creek-bottom lot in Mount Penn can lag Mount Penn's last frost 7-10 days behind a south slope.
Similar climates: Pennside, PA, St. Lawrence, PA, Reiffton, PA, Stony Creek Mills, PA, Reading, PA.
Frequently asked
- When does it freeze in Mount Penn?
- Mount Penn's last spring frost lands near mid-April, and in Mount Penn the first fall frost follows around mid-November.
- What is the rainy season in Mount Penn?
- Mount Penn sees its heaviest rain in May (around 4.0 inches), part of roughly 43 inches a year.
- What is the warmest month in Mount Penn?
- On average July tops the year in Mount Penn at about 76°F.
- What is the coldest month in Mount Penn?
- The coldest stretch in Mount Penn falls in January, around 29°F on average.
- When can I start a vegetable garden in Mount Penn?
- In Mount Penn, sow peas and hardy greens around mid-April; Mount Penn's tomatoes and peppers wait two weeks more.
- How many rainy days does Mount Penn get?
- Mount Penn averages about 183 days with measurable rain or snow each year.
- What hardiness zone is Mount Penn?
- Since January in Mount Penn averages 29°F, Mount Penn's USDA zone follows that floor — confirm it by ZIP.
- What is the 10-day forecast for Mount Penn?
- Mount Penn's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Mount Penn?
- See this week's day-by-day rain chances for Mount Penn in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Mount Penn?
- Current conditions for Mount Penn and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Mount Penn forecast updated?
- The Mount Penn forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Mount Penn?
- Day length in Mount Penn peaks around the June solstice — earliest sunrise and latest sunset — and is shortest near the December solstice.
- How accurate is the weather forecast for Mount Penn?
- The next few days in Mount Penn's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
In Mount Penn, Pennsylvania, the warm-summer humid continental climate runs from about 29°F in January to 76°F in July, a 47°F seasonal range.
Rain and snow bring Mount Penn roughly 43 inches a year across approximately 183 measurable-precipitation days.
Mount Penn's 47°F range, set by its 40.3°N position, drives frost timing and what thrives in Mount Penn.
ZIP codes in Mount Penn
- 19606