Daylight through the yearLongest day (Jun 21): 15 h 19 min5:08 am – 8:27 pmShortest day (Dec 21): 9 h 3 min7:12 am – 4:15 pm
Sun todaySunrise –Sunset –
ClimateWarmest month July: highs 85°F, lows 62°FColdest month January: highs 35°F, lows 14°F46 in of rain a yearwettest month October53 in of snow a year, on about 19 days27 days above 90°F, 149 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Nashua Cwsu station, 10 mi away; snow from Nashua 2 Nnw
Parks and public landsBaddcook Boat Rampstate park · 1.9 miLost Lake Boat Rampstate park · 2.5 miGroton Cemeterystate conservation land · under a mileGroton Country Clubstate conservation land · under a mile · 112 acresNashua River Rail Trailstate conservation land · 1.0 mi · 64 acresAmory A. Lawrence Playgroundpark · under a mileSource: USGS Protected Areas Database (PAD-US)
Earthquakes9 of magnitude 3 or more within 50 miles since 19700 of magnitude 4+, 0 of magnitude 5+Largest: magnitude 3.7 on 2 Oct 199441 mi away, near Hardwick, MassachusettsMost recent: magnitude 3.2 on 26 Sep 201049 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Relatively HighMiddlesex County, MA, compared with all US countiesHigher-risk hazardsIce storm Very HighRiver flooding Relatively HighLightning Relatively HighHurricane Relatively HighSource: FEMA National Risk Index (county level)
Air quality82% of days had good air in 2025299 of 365 days measured65 moderate, 1 unhealthy for sensitive groups daysMedian index 38, worst day 105main pollutant: ozoneSource: US EPA Air Quality Index, Middlesex County monitors, MA
Drinking waterGroton Water Departmentserves 5,456 people from ground waterNo health-based violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
Elevation311 ft95 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalSaint Joseph Hospital10.4 miPost officeGroton Post Office1.0 miTown hallGroton Town Hallunder a milePoliceGroton Police Departmentunder a mileFire stationGroton Fire Department Center Stationunder a mileSource: USGS National Structures Dataset
SchoolsWithin 2 mi5 schools1 elementary, 1 middle, 1 high, 2 otherHighLawrence Academyunder a mileSchoolSeven Hills Academy at Grotonunder a mileElementaryFlorence Roche Elementary Schoolunder a mileCollegeRivier University10.4 miSource: USGS National Structures Dataset
Getting aroundAirportLaurence G Hanscom Field BED17 miMajor airportBoston Logan International Airport BOS33 miInterstateI-4956.1 miUS highwayUS 37.6 miAmtrakWoburn, MA WOB22 miRailAyerMassachusetts Bay Transportation Authority (MBTA)3.8 miCoachAyer Depot SquareGreyhound3.8 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 01471 ZIP area.
