Northwest Harwinton, Connecticut Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Northwest Harwinton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Rain67%0.12″87°71°—
- SundayJul 5Overcast44%—83°68°-4°
- MondayJul 6Light Showers87%0.90″71°58°-12°
- TuesdayJul 7Light Drizzle78%0.03″60°57°-11°
- WednesdayJul 8Overcast20%—79°51°+19°
- ThursdayJul 9Light Drizzle15%0.06″85°57°+6°
- FridayJul 10Light Drizzle50%—81°62°-4°
AQI 41 (Good), driven by Ozone. AQI down 17 over the last 6 hours — air quality is improving sharply. Ozone at AQI 34. Overcast through the UV peak window (cloud cover ~99%) — afternoon ozone should stay flat.
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 34. Overcast through the UV peak window (cloud cover ~99%) — afternoon ozone should stay flat.
- Present
- AQI 34
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
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
- 11:10 PM
- Moonset
- 11:01 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Northwest Harwinton at a glance
- Today vs. normal: 72°F — typical for the season
- Last frost: April 27 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Northwest Harwinton
- Sat87°71°67%
- Sun83°68°44%
- Mon71°58°87%
- Tue60°57°78%
- Wed79°51°20%
- Thu85°57°15%
- Fri81°62°50%
- Sat81°59°27%
- Sun77°59°32%
- Mon81°55°20%
- Tue84°58°22%
- Wed81°63°38%
- Thu79°58°33%
- Fri81°54°29%
- Sat84°57°32%
- Sun91°67°42%
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 — Northwest Harwinton
SPC has placed Northwest Harwinton 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 Northwest Harwinton
- 06791
- 06792