Greenville, New York Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Greenville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast44%—96°75°—
- SundayJul 5Heavy Rain57%1.4″88°71°-8°
- MondayJul 6Rain88%0.21″71°69°-17°
- TuesdayJul 7Heavy Drizzle80%0.10″69°62°-2°
- WednesdayJul 8Overcast23%—80°61°+11°
- ThursdayJul 9Overcast14%—91°71°+11°
- FridayJul 10Light Drizzle54%—89°73°-2°
AQI 94 (Moderate), driven by Ozone. AQI up 40 in the last 6 hours — air quality is degrading. Ozone at AQI 104 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 104 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 104
- UV peak
- 3.9 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 104
PM × Wind × Precip
PM2.5 at 8.7 µg/m³, PM10 at 9.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.92
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
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).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:50 PM
- Moonset
- 9:57 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Greenville at a glance
- Today vs. normal: 24°F above the seasonal normal for this latitude
- Last frost: April 22 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 12083
16-Day Forecast — Greenville
- Sat96°75°44%
- Sun88°71°57%
- Mon71°69°88%
- Tue69°62°80%
- Wed80°61°23%
- Thu91°71°14%
- Fri89°73°54%
- Sat86°76°38%
- Sun84°70°26%
- Mon76°66°23%
- Tue83°68°24%
- Wed89°67°28%
- Thu90°72°41%
- Fri94°73°45%
- Sat92°75°34%
- Sun92°77°39%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, 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 — Greenville
SPC has placed Greenville in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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 · July 1–5
Cicadas claim the afternoon
Annual cicada buzz begins, peaking in the heat of the day.
Day 185 of 365 · Wedge 37 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 Greenville tops out in July (~76°F) and dips lowest in January (~29°F), with December wettest at 4.2 inches and February driest at 2.9 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 29° | 3.5″ | 14 |
| February | 31° | 2.9″ | 13 |
| March | 39° | 3.6″ | 16 |
| April | 51° | 4.0″ | 17 |
| May | 60° | 3.9″ | 18 |
| June | 69° | 3.8″ | 17 |
| July | 76° | 3.6″ | 17 |
| August | 75° | 3.9″ | 17 |
| September | 68° | 3.4″ | 13 |
| October | 57° | 3.3″ | 12 |
| November | 44° | 3.9″ | 13 |
| December | 34° | 4.2″ | 13 |
Regional context
Greenville's climate, from NOAA NCEI 1991-2020 station normals, pairs 29°F Januarys with 76°F Julys — a 46°F swing. About 43.9 inches of precipitation falls over roughly 180 days a year.
Greenville's precipitation spreads evenly: December peaks at 4.2 inches on 13.2 wet days, while February holds 2.9 inches over 13.1 — no month dominates Greenville's rain calendar. It is a balanced pattern Greenville shares with places like Hartsdale, NY, Ardsley, NY and Scarsdale, NY.
Greenville's growing window opens around mid-April, once Greenville's overnight lows stop freezing — sow kale, peas, spinach, and parsnips. Warm-soil crops in Greenville wait about two weeks past Greenville's last frost, once the soil warms. Around mid-November, freezing nights resume in Greenville and tender crops must come in. In Greenville, low spots run 4-7°F colder than nearby slopes, nudging Greenville's frost dates a week.
Similar climates: Hartsdale, NY, Ardsley, NY, Scarsdale, NY, Dobbs Ferry, NY, Tuckahoe, NY.
Frequently asked
- When does it freeze in Greenville?
- In Greenville, expect the last spring frost near mid-April; Greenville's first autumn frost comes around mid-November.
- What is the rainy season in Greenville?
- December is the wettest month in Greenville, about 4.2 inches on average; the year totals roughly 44 inches.
- What is the warmest month in Greenville?
- The warmest stretch in Greenville comes in July, around 76°F on average.
- What is the coldest month in Greenville?
- On average January is the chilliest month in Greenville, about 29°F.
- When can I start a vegetable garden in Greenville?
- Time tomatoes in Greenville for two weeks after mid-April; peas and greens start at Greenville's frost line.
- How many rainy days does Greenville get?
- Greenville records around 180 days of measurable precipitation annually.
- What hardiness zone is Greenville?
- Greenville's USDA zone comes from its January mean (29°F); enter the ZIP on the USDA lookup for the number.
- What is the 10-day forecast for Greenville?
- Greenville'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 Greenville?
- See this week's day-by-day rain chances for Greenville in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Greenville?
- Current conditions for Greenville and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Greenville forecast updated?
- The Greenville forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Greenville?
- Today's sunrise and sunset times for Greenville 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 Greenville?
- The next few days in Greenville's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Greenville's warm-summer humid continental climate in New York pairs 29°F Januarys with 76°F Julys, 47°F apart across the seasons.
Yearly precipitation in Greenville totals around 44 inches, spread over about 180 days of rain or snow.
The 47°F gap between Greenville's summer and winter, at 41.0°N, shapes Greenville's frost calendar.
Beaches near Greenville
- Rockaway Beach28.7 mi
- Long Beach NY29.5 mi
- Jacob Riis Beach29.9 mi
Each linked page shows live water temperature, wave height, swim and surf verdicts, tides, and rip-current risk from NDBC + NOAA + NWS data.
ZIP codes in Greenville
- 10583
- 10530