Grand Isle, Maine Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Grand Isle weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Mostly Clear——71°54°—
- MondayJul 6Clear——76°53°+5°
- TuesdayJul 7Overcast——81°56°+5°
- WednesdayJul 8Overcast——84°56°+3°
- ThursdayJul 9Light Rain56%0.46″69°62°-15°
- FridayJul 10Drizzle33%0.02″72°57°+3°
- SaturdayJul 11Overcast——77°49°+5°
AQI 38 (Good), driven by Ozone. AQI down 5 over the last 6 hours (gradual decline). Ozone at AQI 33 now. With UV 6.9 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 22 around 1 PM.
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 33 now. With UV 6.9 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 22 around 1 PM.
- Present
- AQI 33
- UV peak
- 6.9 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 22
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
- 10:55 PM
- Moonset
- 10:38 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Grand Isle at a glance
- Today vs. normal: 4°F above the seasonal normal for this latitude
- Last frost: May 30 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 04746
16-Day Forecast — Grand Isle
- Sun71°54°1%
- Mon76°53°0%
- Tue81°56°1%
- Wed84°56°4%
- Thu69°62°56%
- Fri72°57°33%
- Sat77°49°6%
- Sun79°50°18%
- Mon76°55°21%
- Tue81°52°32%
- Wed81°62°44%
- Thu74°59°38%
- Fri74°53°55%
- Sat76°53°36%
- Sun76°46°35%
- Mon74°53°40%
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.
ZIP codes in Grand Isle
- 04746