Green Tree, Pennsylvania Weather
Apples hang heavy on the branch. Day 93 of summer. Read this microseason across nine climate regions →
Green Tree weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 12:50 AM EDT · Open-Meteo
- TodaySep 21Drizzle later56%0.10″66°57°—
- TuesdaySep 22Light Rain60%0.17″60°53°-6°
- WednesdaySep 23Light Drizzle60%0.05″57°52°-3°
- ThursdaySep 24Light Drizzle39%0.01″64°53°+7°
- FridaySep 25Overcast——69°47°+5°
- SaturdaySep 26Partly Cloudy——70°46°+1°
- SundaySep 27Partly Cloudy——73°50°+3°
Air quality now AQI 34 · Good
AQI 34 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 8.6 µg/m³ (AQI 48) with a 0.99 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in stagnant air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 8.6 µg/m³ (AQI 48) with a 0.99 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.99
- 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).
September dries up ditches or breaks down bridges.
- Moonrise
- 4:53 PM
- Moonset
- 1:38 AM
- In sign
- ♑︎ Capricorn
Apples hang heavy on the branch
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Green Tree at a glance
- Today vs. normal: Today averages 62°F (high 66°F, low 57°F), 2°F below the 64°F normal for Sep 21
- Last frost: April 24 (1991–2020 median, NOAA station 10 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, winter squash
15-Day Forecast — Green Tree
- Mon66°57°56%
- Tue60°53°60%
- Wed57°52°60%
- Thu64°53°39%
- Fri69°47°5%
- Sat70°46°2%
- Sun73°50°2%
- Mon71°51°5%
- Tue73°53°10%
- Wed77°56°19%
- Thu82°59°14%
- Fri76°55°13%
- Sat83°65°17%
- Sun71°61°36%
- Mon60°47°22%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Fall planting + final harvests
As of September 21, the season's first frost (typically October 27) is approaching. Pick what frost-tender plants still carry before the next cold front. This city's planting calendar for September: plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, and winter squash.
SPC Convective Outlook
Storm Prediction Center — Green Tree
SPC includes Green Tree in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook.
Sun & seasons in Green Tree
Green Tree sits in Allegheny County, where the year’s longest day runs 15h 4m of daylight and its shortest just 9h 17m — a swing of +5h 47m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Philadelphia, the state’s largest city, lies about 261 miles to the E. The nearest town Green Tree tracks is Pittsburgh, roughly 4 miles to the ENE.
Air quality in Green Tree
Air quality in Green Tree’s county has trended cleaner since 2020; its cleanest year on record was 2024 (median AQI 52).
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| April | lettuce, peas, spinach, radishes | radishes |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, spinach, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| July | tomatoes, peppers, beans, squash | lettuce, peas, spinach, beans, summer squash, garlic |
| August | beans, squash, fall brassicas, carrots | tomatoes, peppers, beans, summer squash |
| September | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| October | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| November | — | fall brassicas, carrots |
A year in weather
In Green Tree, July runs warmest near 73°F and January coldest around 28°F, while May is the wettest month (5.4 inches) and February the driest (3.1 inches).
| Month | Mean temp | Precip |
|---|---|---|
| January | 28° | 3.4″ |
| February | 31° | 3.1″ |
| March | 39° | 4.1″ |
| April | 51° | 4.3″ |
| May | 59° | 5.4″ |
| June | 68° | 4.7″ |
| July | 73° | 4.4″ |
| August | 73° | 4.0″ |
| September | 66° | 3.4″ |
| October | 55° | 3.2″ |
| November | 41° | 3.5″ |
| December | 32° | 3.9″ |
Regional context
Similar climates Crafton, PA, Carnegie, PA, Dormont, PA
By modelled 1991-2020 normals (EC_Earth3P_HR model via Open-Meteo), Green Tree sees 28°F Januarys and 73°F Julys, a 46°F range, plus around 47.4 inches of precipitation.
Green Tree's precipitation spreads evenly across the seasons: May peaks at 5.4 inches, while February holds 3.1 inches — no season dominates Green Tree's rain calendar. That lines Green Tree up with places like Crafton, PA, Carnegie, PA and Dormont, PA, fed by overlapping storm tracks.
Green Tree's growing window opens around April 24, once Green Tree's overnight lows stop freezing — sow kale, peas, spinach, and parsnips. Hold Green Tree's tender crops — tomatoes, peppers, basil — until 10-14 days past Green Tree's last frost. Green Tree's window closes around October 27 as Green Tree's overnight lows return below freezing. In about half of years, Green Tree's last freeze comes after April 24.
Similar climates: Crafton, PA, Carnegie, PA, Dormont, PA, Rosslyn Farms, PA, Thornburg, PA.
Frequently asked
- When does it freeze in Green Tree?
- Green Tree's last spring frost lands near April 24, and in Green Tree the first fall frost follows around October 27.
- What is the rainy season in Green Tree?
- Green Tree sees its heaviest rain in May (around 5.4 inches), part of roughly 47 inches a year.
- What is the warmest month in Green Tree?
- July is Green Tree's warmest month, averaging about 73°F.
- What is the coldest month in Green Tree?
- Green Tree bottoms out in January, with a mean near 28°F.
- When can I start a vegetable garden in Green Tree?
- Time tomatoes in Green Tree for two weeks after April 24; peas and greens start at Green Tree's frost line.
- What hardiness zone is Green Tree?
- Green Tree's USDA zone comes from its January mean (28°F); enter the ZIP on the USDA lookup for the number.
- What is the 10-day forecast for Green Tree?
- Green Tree'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 Green Tree?
- See this week's day-by-day rain chances for Green Tree in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Green Tree?
- Current conditions for Green Tree and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Green Tree forecast updated?
- The Green Tree forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Green Tree?
- Today's sunrise and sunset times for Green Tree are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Green Tree?
- The next few days in Green Tree's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Green Tree sits at 40.4°N; its climate zone is warm-summer humid continental (Köppen approximation).
ZIP codes in Green Tree
- 15205
- 15220
- 15242
- 15244
- 15283