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New London, CT 06320 Weather
Current conditions
Observed at Groton / New London, Groton / New London Airport · 32 min ago
Forecast
10-day-
Overnight
Partly cloudy. Low around 44, with temperatures rising to around 46 overnight. Northeast wind around 18 mph.
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Wednesday
Partly sunny. High near 55, with temperatures falling to around 53 in the afternoon. Northeast wind 14 to 17 mph, with gusts as high as 30 mph.
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Wednesday Night
Mostly cloudy, with a low around 43. North wind 12 to 16 mph, with gusts as high as 29 mph.
National Weather Service forecast updated 3 hrs ago.
Hourly
Hourly forecast- Now46°
- 6 AM45°
- 7 AM44°
- 8 AM44°
- 9 AM46°
- 10 AM50°
- 11 AM52°
- 12 PM54°
- 1 PM55°
- 2 PM55°
- 3 PM55°
- 4 PM54°
- 5 PM53°
- 6 PM51°
- 7 PM47°
- 8 PM46°
- 9 PM46°
- 10 PM45°
- 11 PM45°
- Thu12 AM44°
- 1 AM44°
- 2 AM43°
- 3 AM44°
- 4 AM44°
10-day forecast
Details- TonightOct 20Partly Cloudy44°
- TodayOct 21Partly Sunny43°55°
- ThuOct 22Mostly Sunny37°62°
- FriOct 23Sunny35°53°
- SatOct 24Sunny36°56°
- SunOct 25Sunny43°61°
- MonOct 26Sunny45°65°
- TueOct 27Mostly Sunny61°
- WedOct 28Rain0.08 in48°51°
- ThuOct 29Sunny39°57°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near New London
More weather news-
A warmer Tuesday in Connecticut with a mix of sun and clouds. Here's when the chill sets in again.Leaves begin to change color at a home on Sport Hill Road in Easton on Oct. 7, 2026. Another day of seasonable fall weather is in store for Connecticut Tuesday — but expect it to be a little cloudier and breezier than…
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Connecticut warms back toward 60 Monday after weekend chill. Here's when rain returns.Connecticut starts the week with a chilly morning and plenty of sunshine, but the weekend’s deep chill is easing. Temperatures will climb back toward 60 degrees Monday, with lighter winds and dry weather statewide. The…
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Connecticut wakes to 20s and 30s Sunday before sunshine pushes highs into 50s. Here's the forecast.Saturday brought the coldest air of the season so far, and Sunday keeps the autumn chill in place across Connecticut. Sunshine returns statewide, winds ease considerably and temperatures make a modest recovery, although…
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Dangerous Freeze Warnings for 7 Counties in New York as Temperatures PlummetFreeze Warnings take effect tonight across parts of New York, with lows in the upper 20s to around 30 expected from the Hudson Valley to Buffalo. The warnings run into 9 a.m. EDT Sunday. Frost and freeze conditions…
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Saturday will feel more like November in Connecticut as temperatures dive. Here's how cold it'll be.The change will be hard to miss Saturday morning. Temperatures will tumble behind Friday’s cold front, with readings starting in the 30s and 40s across much of Connecticut. A few lingering showers are possible early…
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A warm, stormy Friday in Connecticut before big temperature drop arrivesFriday will start on a damp note across Connecticut, with showers likely during the morning and a few pockets of fog possible. The rain should be most widespread early, making for a wet morning commute, but there may be…
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Enjoy Thursday’s 60s, Connecticut. The weekend brings a big chill with sub-freezing temps likelyEnjoy Thursday’s mild weather while it lasts. Connecticut gets sunshine and temperatures in the 60s before rain arrives Thursday night and a much colder blast sends temperatures tumbling by the weekend. The morning…
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Enjoy a sunny, warm Wednesday in Connecticut. Changes arrive soon after.Connecticut gets (earns?) one more warm, almost summerlike afternoon before October reminds us exactly where we are on the calendar. Wednesday will be the warmest day of the week, with sunshine pushing temperatures well…
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Connecticut warms into the 70s Tuesday before a sharp weekend chill. Here's the latest forecastA quiet stretch of October weather continues across Connecticut Tuesday, although the day will start with plenty of clouds before brighter skies gradually emerge. Temperatures remain mild for early October, and the…
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Nor’easter will stay offshore, but Connecticut faces gusty winds WednesdayA nor'easter swirling off the East Coast will stay offshore as it moves north this week, bringing some strong winds to Connecticut. A nor'easter is hanging out off the East Coast of the U.S. this week, and while it's…
Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Forecast
- WedGood (28)
New London-Groton, CT reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyNorwich Public Utility Plant, records since 1956. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Middletown 51 km
- Norwich 19 km
- Coventry 52 km
- Glastonbury 58 km
- South Kingstown 50 km
- Manchester 59 km
- Branford 60 km
- North Kingstown 58 km
- Mansfield City 47 km
- Windham 39 km
- Guilford 49 km
- Montville Center 15 km
Forecasters' discussion
From the National Weather Service office in OKX, issued 53 min ago
What Has Changed
Updated for Aviation. Coastal Flood Advisories now in effect for late this afternoon/early this evening high tide for the south shore back bays of Nassau and western Great South Bay.
Key Messages
1) Mainly dry conditions will continue into early next week with gusty N-NE winds continuing through the end of this week.
2) Minor coastal flooding expected across the south shore back bays of Nassau, western portions of the Great South Bay, and lower NY Harbor with late this afternoon/early evening high tide. Additional localized minor coastal flooding possible on Thursday.
Key Message 1
The low pressure/nor'easter located about 350 miles southeast of Fire Island will continue meandering today before gradually picking up speed tonight, then track ENE-NE away from the coast Thursday into Friday.
The main sensible weather impact will be from the continuation of gusty N-NE winds, especially close to the coast. Gusts 25-35 mph are anticipated with a low chance of a few immediate coast locations reaching 40 mph, mainly along the southeast coast of Long Island. Further inland, gusts 20-25 mph are expected. Gusts may become occasional or end away from the coast tonight where gusts 25-35 mph remain possible. By Thursday, gusts should be weaker as the storm starts moving further offshore.
Otherwise, a weak surface trough/cold front will move across the northeast late Thursday into Thursday night. This is associated with a fast moving northern stream trough that will help push the storm well offshore. Behind these systems, high pressure will reestablish itself over southeast Canada Thursday night and then builds over the northeast Friday into the weekend. The high will remain in control into early next week.
The forecast is largely dry through the next week. The only exception is for the east end/forks of Long Island where a brief shower is possible this evening as some moisture could pivot well NW of the offshore storm. There is a good amount of low level dry air to overcome, so it may just end up being a few sprinkles.
Mid and upper level clouds will increase from the SE through the day today with mostly cloudy conditions likely for eastern half of the area. These clouds will diminish late tonight into Thursday. Mostly clear conditions are then forecast through early next week.
The warmest day for the rest of the week will be Thursday where highs will reach the low to mid 60s. Temperatures should then be a bit below normal until a warming trend begins early next week.
Outlook For 06z Thursday Through Sunday
Thursday and Friday: VFR. N winds G15-20kt.
Saturday and Sunday: VFR.
Detailed information, including hourly TAF wind component forecasts, can be found at: https:/www.weather.gov/zny/n90
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.