South Windham, Connecticut Weather
Fireflies rise from the lawn. Day 78 of spring. Read this microseason across nine climate regions →
South Windham weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 5Overcast——86°55°—
- SaturdayJun 6Light Drizzle39%—89°58°+3°
- SundayJun 7Light Drizzle42%0.01″80°57°-9°
- MondayJun 8Overcast——80°49°0°
- TuesdayJun 9Overcast——84°55°+4°
- WednesdayJun 10Overcast——86°55°+2°
- ThursdayJun 11Overcast18%—79°55°-7°
AQI 51 (Moderate), driven by PM2.5. AQI down 33 over the last 6 hours — air quality is improving sharply. PM2.5 at 10.0 µg/m³ (AQI 53) with a 0.76 fine-to-coarse ratio and 1 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.
What's driving it
Ozone × UV × Sky
Ozone at AQI 39. Overcast through the UV peak window (cloud cover ~68%) — afternoon ozone should stay flat.
- Present
- AQI 39
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 9
PM × Wind × Precip
PM2.5 at 10.0 µg/m³ (AQI 53) with a 0.76 fine-to-coarse ratio and 1 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.76
- Wind
- calm
- 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).
The higher the clouds, the finer the weather.
- Moonrise
- 3:52 AM
- Moonset
- 1:48 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
South Windham at a glance
- Today vs. normal: 18°F below the seasonal normal for this latitude
- Last frost: April 26 (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 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 — South Windham
SPC has placed South Windham in the Slight Risk category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWSLGTSlight Risk
- DAY 3MRGLMarginal Risk
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.