West Cornwall, Connecticut Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
West Cornwall weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——81°52°—
- FridayJun 5Overcast——85°59°+4°
- SaturdayJun 6Heavy Showers44%0.34″83°63°-2°
- SundayJun 7Light Drizzle44%—75°53°-8°
- MondayJun 8Light Drizzle——75°50°0°
- TuesdayJun 9Overcast——81°50°+6°
- WednesdayJun 10Partly Cloudy10%—83°54°+2°
Ozone at AQI 68 now. AQI up 16 in the last 6 hours — air quality is degrading. With UV 7.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 67 by mid-afternoon.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 68 now. With UV 7.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 67 by mid-afternoon.
- Present
- AQI 68
- UV peak
- 7.4 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 67
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:27 AM
- Moonset
- 12:46 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
West Cornwall at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: April 27 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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 — West Cornwall
SPC has placed West Cornwall in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3MRGLMarginal Risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
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.