Londonderry, Vermont Weather
Honeysuckle sweetens the night. Day 90 of spring. Read this microseason across nine climate regions →
Londonderry weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 17Overcast10%—74°48°—
- ThursdayJun 18Rain76%0.26″74°59°0°
- FridayJun 19Overcast11%—74°56°0°
- SaturdayJun 20Light Drizzle47%—73°55°-1°
- SundayJun 21Light Drizzle31%—72°48°-1°
- MondayJun 22Drizzle55%0.24″57°53°-15°
- TuesdayJun 23Overcast37%—77°48°+20°
AQI 33 (Good), driven by Ozone. AQI up 8 over the last 6 hours (gradual rise). Ozone at AQI 49 now. With UV 6.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 44 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 49 now. With UV 6.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 44 around 1 PM.
- Present
- AQI 49
- UV peak
- 6.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 44
PM × Wind × Precip
PM2.5 at 6.9 µg/m³ (AQI 38) with a 0.78 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.78
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 7:36 AM
- Moonset
- 10:39 PM
- In sign
- ♌︎ Leo
Honeysuckle sweetens the night
Londonderry at a glance
- Today vs. normal: 70°F — typical for the season
- Last frost: May 5 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Londonderry
- Wed74°48°10%
- Thu74°59°76%
- Fri74°56°11%
- Sat73°55°47%
- Sun72°48°31%
- Mon57°53°55%
- Tue77°48°37%
- Wed77°56°15%
- Thu70°51°45%
- Fri76°61°37%
- Sat85°58°34%
- Sun90°63°35%
- Mon84°66°48%
- Tue75°69°43%
- Wed77°67°32%
- Thu81°67°48%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 17, 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 — Londonderry
SPC has placed Londonderry in the Slight Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWSLGTSlight Risk
- DAY 3NONENo severe 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.
ZIP codes in Londonderry
- 05148