Groton Long Point, Connecticut Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Groton Long Point weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Rain32%0.17″92°74°—
- SundayJul 5Light Drizzle43%0.05″77°69°-15°
- MondayJul 6Heavy Showers74%3.8″68°64°-9°
- TuesdayJul 7Light Showers68%1.9″65°60°-3°
- WednesdayJul 8Partly Cloudy12%—79°58°+14°
- ThursdayJul 9Mostly Clear11%—79°67°0°
- FridayJul 10Light Drizzle26%—79°70°0°
AQI 52 (Moderate), driven by PM2.5. AQI projected to climb to 91 over the next 6 hours. PM2.5 at 9.3 µg/m³ (AQI 51) with a 0.93 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 7 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 40 now. With UV 5.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 30 around 1 PM.
- Present
- AQI 40
- UV peak
- 5.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 30
PM × Wind × Precip
PM2.5 at 9.3 µg/m³ (AQI 51) with a 0.93 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.93
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:44 PM
- Moonset
- 9:49 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Groton Long Point at a glance
- Today vs. normal: 12°F above the seasonal normal for this latitude
- Last frost: April 24 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Groton Long Point
- Sat93°74°32%
- Sun77°69°43%
- Mon68°64°74%
- Tue65°60°68%
- Wed79°58°12%
- Thu79°67°11%
- Fri79°70°26%
- Sat73°68°21%
- Sun71°65°22%
- Mon67°64°18%
- Tue72°64°16%
- Wed75°62°27%
- Thu83°69°30%
- Fri83°72°31%
- Sat79°72°35%
- Sun77°67°40%
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 — Groton Long Point
SPC includes Groton Long Point in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- 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.
ZIP codes in Groton Long Point
- 06340