Tappan, New York Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Tappan weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast45%—97°75°—
- SundayJul 5Rain59%0.46″90°71°-7°
- MondayJul 6Light Showers89%0.30″72°69°-18°
- TuesdayJul 7Heavy Drizzle79%0.06″68°62°-4°
- WednesdayJul 8Overcast24%—82°61°+14°
- ThursdayJul 9Overcast15%—91°71°+9°
- FridayJul 10Light Drizzle53%—86°71°-5°
AQI 66 (Moderate), driven by Ozone. AQI up 27 in the last 6 hours — air quality is degrading. Ozone at AQI 71 — 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 71 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 71
- UV peak
- 3.4 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 71
PM × Wind × Precip
PM2.5 at 6.8 µg/m³, PM10 at 7.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.88
- Wind
- light
- 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
- 10:51 PM
- Moonset
- 9:58 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Tappan at a glance
- Today vs. normal: 26°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: 10983
16-Day Forecast — Tappan
- Sat98°75°45%
- Sun90°71°59%
- Mon72°69°89%
- Tue68°62°79%
- Wed82°61°24%
- Thu91°71°15%
- Fri86°71°53%
- Sat86°73°37%
- Sun84°68°26%
- Mon78°65°22%
- Tue83°67°24%
- Wed88°64°28%
- Thu90°69°41%
- Fri94°71°45%
- Sat92°73°34%
- Sun92°75°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 — Tappan
SPC has placed Tappan 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.
ZIP codes in Tappan
- 10964
- 10962
- 10983