New London, Connecticut Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
New London weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Showers71%0.48″92°73°—
- SundayJul 5Light Drizzle55%0.02″79°69°-13°
- MondayJul 6Heavy Rain85%2.9″69°63°-10°
- TuesdayJul 7Light Rain80%0.21″68°62°-1°
- WednesdayJul 8Overcast17%—74°56°+6°
- ThursdayJul 9Light Drizzle14%0.01″77°64°+3°
- FridayJul 10Light Drizzle36%—82°70°+5°
AQI 209 (Very Unhealthy), driven by Ozone. AQI up 27 in the last 6 hours — air quality is degrading. Ozone at AQI 78. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
AVOID OUTDOORS Avoid outdoor exertion. Keep windows closed; use HEPA filtration indoors if available.
What's driving it
Ozone × UV × Sky
Ozone at AQI 78. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 78
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 9
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 13.5 µg/m³, PM10 to 15.3 µg/m³.
- PM2.5/PM10
- 0.88
- Wind
- calm
- Recent rain
- 2h in last 6h
- Pattern
- washed out
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
- 11:06 PM
- Moonset
- 10:57 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
New London at a glance
- Today vs. normal: 4°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.
ZIP code: 06320
16-Day Forecast — New London
- Sat92°74°71%
- Sun80°69°55%
- Mon69°63°85%
- Tue68°62°80%
- Wed74°56°17%
- Thu77°64°14%
- Fri82°70°36%
- Sat81°64°25%
- Sun74°62°26%
- Mon76°60°17%
- Tue77°66°16%
- Wed79°71°34%
- Thu82°65°34%
- Fri75°64°28%
- Sat76°65°26%
- Sun82°72°39%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 — New London
SPC has placed New London in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- 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 New London
- 06320