Massachusetts State Parks · Massachusetts

Otter River State Forest

Massachusetts State Parks · Massachusetts, United States

Open on the map Drive there Reserve Directions
Sites
70
Hookups
70 no hookups
Group sites
Yes
Drinking water
Yes
Restrooms
Yes
Showers
Yes
Dump station
No
Pets
Yes
Elevation
899 ft
Dark sky
Bortle class 4
Cell coverage
T-Mobile good · AT&T good · Verizon good (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
Nearest town
Winchendon
Address
86 Winchendon Road, Baldwinville, MA
Phone
978-939-8962
Activities
Camping

About

A Massachusetts DCR campground in Winchendon, with 70 individually mapped campsites live on ReserveAmerica's own per-site facility map (15 popup/tent, 45 tent-only, 10 non-electric). 4 additional yurt unit(s) are also bookable here but are lodging, not counted in the campsite totals above. 3 separate group camping site/area(s) are also bookable here, separate from the individual/family campsites counted above. The facility's own live per-site map also plots one or more day-use-only shelter/picnic/meeting-room markers alongside the real campsites; those are excluded from total_sites here as they are not campsites. Reservable through the Massachusetts DCR's own ReserveAmerica/Aspira contract (contractCode=MA), hosted directly at reserveamerica.com.

Fees

Campsite Fees at Otter River State Forest $17 for MA resident / $54 for non-resident. There is a $4.50 non-refundable transaction charge for each reservation made. (reserveamerica.com, live per-facility fee notice)

Weather, month by month

MonthTypical highTypical lowColdest nightHottest dayYears with a night below 32°F
January32°17°-9°49°11 of 11
February33°19°-19°56°11 of 11
March43°28°3°68°11 of 11
April56°37°25°86°9 of 11
May67°49°33°89°0 of 11
June74°57°46°91°0 of 11
July83°65°56°94°0 of 11
August80°64°57°92°0 of 11
September74°57°46°88°0 of 11
October59°44°33°77°0 of 10
November44°32°13°68°10 of 10
December35°24°5°56°10 of 10

Mid-month figures from 2016–2026 of daily weather at this spot (ERA5 reanalysis via Open-Meteo, CC BY 4.0), in °F. Typical is the median; coldest and hottest are the extremes seen.

Nearby campgrounds

All public campgrounds in Massachusetts · Every state and province · Facts read from the operator 2026-08-25. Confirm fees, rules and current status with the operator before you go.