Twenty-nine listings in our Maine directory carry an agricultural category, and 26 of those list livestock among their features. That makes the agricultural fair the backbone of the state's event calendar by a wide margin. Nothing else in the dataset comes close in count.
The circuit is also tightly seasonal. The first agricultural listing is June 6 and the last closes October 11. Outside that window there is exactly one agricultural entry, an indoor harvest festival in late November. What follows is the whole circuit in date order, plus the three structural things worth knowing before you pick a weekend: where the ten-day fairs sit, which region has the deepest bench, and which fairs list a midway.
June: three small fairs and a fiber weekend
The Maine Fiber Frolic opens the agricultural year in Windsor, Kennebec County, on June 6 to 7. It is tagged craft, artisan, agricultural and family, and it lists animals, competitions, crafts and food. It is the only listing in the dataset that combines the fiber and craft side with livestock, which makes it a different animal from the fairs that follow.
The traditional circuit starts five days later with Springfield Fair in Penobscot County, June 11 to 14. Then Pittston Fair June 18 to 21 and Monmouth Fair June 24 to 27, both Kennebec County. All three list the same core set: animals, competitions and food, with no rides. These are small-fair weekends, and they are the cleanest introduction to what a Maine agricultural fair looks like before the midways arrive.
July: the circuit spreads out
July only carries three traditional agricultural fairs, but they land in three different regions. Ossipee Valley Fair runs July 9 to 12 in South Hiram, Oxford County. Houlton Fair runs July 10 to 12 up in Aroostook County. Waterford World's Fair takes July 17 to 19 in North Waterford, back in Oxford County. None of the three list rides.
July's fourth agricultural entry is a different format: the Maine Potato Blossom Festival in Fort Fairfield, a nine-day run from July 11 to 19 tagged agricultural and cultural, with competitions, food, kids' activities, live music and a parade but no livestock listing. Our records date it to 1947. Then Bangor State Fair opens July 30 for a ten-day run into August, and it is the first fair of the season listed with rides.
August: the ten-day fairs
August is where the circuit gets serious. Northern Maine Fair in Presque Isle and Union Fair in Knox County both run August 5 to 9, and both list rides. Union also lists live music and carries an 1869 date in our records, which makes it one of only eight events in the whole dataset with a sourced founding year.
Topsham Fair takes six days, August 11 to 16, in Sagadahoc County. Skowhegan State Fair runs ten, August 13 to 22, in Somerset County, and carries an 1818 date. Windsor Fair runs another ten, August 29 through September 7, straddling the month.
The last weekend of August is the most crowded of the season. Acton Fair in York County and Piscataquis Valley Fair in Dover-Foxcroft both run August 27 to 30, and the Washington County Fair in Pembroke squeezes into two days, August 29 to 30. That is four agricultural fairs open simultaneously on August 29, spread from York County to Downeast.
September: the densest month for fairs
Eight agricultural fairs run in September, more than any other month. Blue Hill Fair takes September 3 to 7 in Hancock County with rides. Harmony Free Fair runs September 4 to 7 in Somerset County. Clinton Lions Agricultural Fair is September 10 to 13 and Litchfield Fair September 11 to 13, both Kennebec County and overlapping.
Oxford County Fair runs September 16 to 19, North New Portland Fair September 18 to 20, and Farmington Fair takes a full week, September 20 to 26, in Franklin County with rides. The Common Ground Country Fair in Unity closes the month September 25 to 27 and is the single most broadly tagged listing in the dataset, covering agricultural, craft, food-festival and family with animals, competitions, crafts, food, kids' activities and live music. Our records date it to 1977.
Cumberland Fair opens September 27 and runs into October, ending October 3, with animals, competitions, food and rides.
October: Fryeburg closes the circuit
Fryeburg Fair runs October 4 to 11 in Oxford County and is the last agricultural fair of 2026. It is one of only three agricultural listings that combine rides with live music, alongside Union Fair and Common Ground.
After Fryeburg, the agricultural calendar has one remaining entry: the Maine Harvest Festival in Bangor, November 21 to 22, tagged agricultural, craft and food-festival, listing only crafts and food. That is an indoor event and a different experience entirely.
The Kennebec Valley has the deepest bench
If you want to see the most fairs with the least driving, the Kennebec Valley is the answer. Pittston, Monmouth, Windsor Fair, Harmony, Clinton, Litchfield, North New Portland and Skowhegan State Fair all sit in that region, along with the Maine Fiber Frolic. That is nine agricultural listings in one region, spread from early June to late September.
Maine's Lakes and Mountains is second with five: Ossipee Valley, Waterford World's Fair, Oxford County, Farmington and Fryeburg. Greater Portland has exactly one, Cumberland Fair, which is worth knowing if you are basing a trip out of Portland. The fairs are not where the people are.
Which fairs list rides, and which do not
Ten agricultural fairs in our records list rides: Bangor State Fair, Northern Maine Fair, Union Fair, Topsham Fair, Skowhegan State Fair, Windsor Fair, Blue Hill Fair, Farmington Fair, Cumberland Fair and Fryeburg Fair. Every one of those runs five days or longer.
The remaining fairs list animals, competitions and food without a midway. That correlation is worth planning around. If you are bringing children who want a carnival, go to the long fairs in August, September and October. If you want the livestock barns and the exhibition halls without the noise, the June fairs and the smaller September fairs are the ones to pick.
A note on founding dates
Only eight of the 70 events in this directory carry a sourced establishment year, and three of them are agricultural: Skowhegan State Fair (1818), Union Fair (1869) and Common Ground Country Fair (1977). Maine Potato Blossom Festival adds a fourth at 1947.
We are not ranking fairs by age, because 62 of these records have no founding date at all and any such ranking would be guesswork dressed up as history. Where we have a year, we print it. Where we do not, we say nothing.
