A cool and dry air mass was in place across northern New England on May 8th into the 9th. At the same time low pressure began to develop just south of New England spreading rain across Maine on the night of the 8th into the 9th. Through evaporational cooling and strong lift, the rain changed to snow across higher elevations with the snow levels falling throughout the night until snow began to fall even at the coast on the morning of the 9th. Many locations picked up several inches of snow by midday. Accumulating snowfall in early to mid May is exceptionally rare, especially on the coastal plain.

Winter Weather in ANDROSCOGGIN, MAINE
From 09-MAY-20 04:00:00 to 09-MAY-20 10:00:00 (EST-5)
Reported by: Trained Spotter

Rain changed to snow across Androscoggin County in the early morning hours on May 9th and accumulated anywhere between a coating and 4 inches by midday. A few selected amounts were 3.5 inches in Turner, 1 inch in Lewiston, and 0.4 inch in Lisbon.

Winter Weather in INTERIOR CUMBERLAND HIGHLANDS, MAINE
From 09-MAY-20 04:00:00 to 09-MAY-20 11:00:00 (EST-5)
Reported by: Trained Spotter

Rain changed to snow across the fish tail of Cumberland County in the early morning hours on May 9th and accumulated anywhere between a coating and 3 inches by midday. A few selected amounts were 2.4 inches in Harrison and 2 inches in Bridgton.

Winter Weather in CENTRAL INTERIOR CUMBERLAND, MAINE
From 09-MAY-20 04:00:00 to 09-MAY-20 11:00:00 (EST-5)
Reported by: Trained Spotter

Rain changed to snow across Cumberland County in the early morning hours on May 9th and accumulated anywhere between a coating and 2 inches by midday. A few selected amounts were 1.1 inches in Gray, 1 inch in Hiram, and 0.2 inch in Gorham.

Winter Weather in COASTAL CUMBERLAND, MAINE
From 09-MAY-20 05:00:00 to 09-MAY-20 11:00:00 (EST-5)
Reported by: Trained Spotter

Rain changed to snow across coastal Cumberland County in the early morning hours on May 9th and accumulated up to a half inch in spots. Cumberland Center had 0.2 inch, and the Portland Jetport had a trace.

Winter Weather in NORTHERN FRANKLIN, MAINE
From 09-MAY-20 00:00:00 to 09-MAY-20 15:00:00 (EST-5)
Reported by: Trained Spotter

Rain changed to snow across Franklin County late on May 8th into the early morning hours on May 9th and accumulated anywhere between 3 and 9 inches by early afternoon. A few selected amounts were 7.5 inches in Madrid, 7 inches in Oquossoc, and 5 inches in Stratton.

Winter Weather in SOUTHERN FRANKLIN, MAINE
From 09-MAY-20 00:00:00 to 09-MAY-20 15:00:00 (EST-5)
Reported by: Trained Spotter

Rain changed to snow across Franklin County late on the 8th into the early morning on May 9th and accumulated anywhere between 2 and 6 inches by early afternoon. A few selected amounts were 5.5 inches in New Vineyard, and 4 inches in Farmington and Wilton.

Winter Weather in KENNEBEC, MAINE
From 09-MAY-20 03:00:00 to 09-MAY-20 12:00:00 (EST-5)
Reported by: Trained Spotter

Rain changed to snow across Kennebec County in the early morning hours on May 9th and accumulated anywhere between a coating and 4 inches by midday. A few selected amounts were 4 inches in Rome, 2.8 inches in Hallowell, and 2 inches in Winthrop.

Winter Weather in KNOX, MAINE
From 09-MAY-20 07:00:00 to 09-MAY-20 12:00:00 (EST-5)
Reported by: Trained Spotter

Rain changed to snow across Knox County in the early morning hours on May 9th and accumulated between a coating and 1 inch by midday. 1 inch of snow was reported in Union and even a trace fell in Camden.

Winter Weather in LINCOLN, MAINE
From 09-MAY-20 07:00:00 to 09-MAY-20 12:00:00 (EST-5)
Reported by: CoCoRaHS

Rain changed to snow across Lincoln County in the early morning hours on May 9th and accumulated between a coating and 1 inch by midday. A few selected amounts were 0.5 inch in Dresden, and 0.2 inch in Newcastle.

Winter Weather in NORTHERN OXFORD, MAINE
From 09-MAY-20 03:00:00 to 09-MAY-20 11:00:00 (EST-5)
Reported by: Trained Spotter

Rain changed to snow across Northern Oxford County in the early morning hours on May 9th and accumulated anywhere between 2 and 6 inches by early afternoon depending on elevation.

Winter Weather in SOUTHERN OXFORD, MAINE
From 09-MAY-20 03:00:00 to 09-MAY-20 11:00:00 (EST-5)
Reported by: Trained Spotter

Rain changed to snow across southern Oxford County in the early morning hours on May 9th and accumulated between 1 and 5 inches by midday. A few selected amounts were 4.5 inches in Bryant Pond, 4.5 inches in Hartford, and 1.6 inches in Norway.

Winter Weather in CENTRAL SOMERSET, MAINE
From 08-MAY-20 22:00:00 to 09-MAY-20 13:00:00 (EST-5)
Reported by: Public

Rain changed to snow across central Somerset County during the night of the 8th and accumulated anywhere between 3 and 7 inches by midday. 6.5 inches fell in Caratunk with 3 inches falling in Bingham.

Winter Weather in SOUTHERN SOMERSET, MAINE
From 09-MAY-20 00:00:00 to 09-MAY-20 12:00:00 (EST-5)
Reported by: Trained Spotter

Rain changed to snow across southern Somerset County in the early morning hours on May 9th and accumulated anywhere between a coating and 4.5 inches by midday. A few selected amounts were 4.2 inches in Hartland, 2.5 inches in Embden, and 1 inch in Harmony.

Winter Weather in INTERIOR WALDO, MAINE
From 09-MAY-20 07:00:00 to 09-MAY-20 13:00:00 (EST-5)
Reported by: Trained Spotter

Rain changed to snow across interior Waldo County in the early morning hours on May 9th and accumulated anywhere between a coating and 2 inches by midday. A few selected amounts were 2 inches in Freedom and Montville, and 1 inch in Prospect.

Winter Weather in COASTAL WALDO, MAINE
From 09-MAY-20 07:00:00 to 09-MAY-20 12:00:00 (EST-5)
Reported by: Trained Spotter

Rain changed to snow across coastal Waldo County in the early morning hours on May 9th and accumulated up to an inch by midday. 0.8 inch fell in both Winterport and Searsmont.

Winter Weather in INTERIOR YORK, MAINE
From 09-MAY-20 05:00:00 to 09-MAY-20 10:00:00 (EST-5)
Reported by: Public

Rain changed to snow across interior York County in the early morning hours on May 9th and accumulated anywhere between a coating and 4 inches by midday. A few selected amounts were 3.5 inches in Newfield, 3.3 inches five miles northwest of Acton, 1.5 inches in northwest Hollis.

Winter Weather in COASTAL YORK, MAINE
From 09-MAY-20 06:00:00 to 09-MAY-20 11:00:00 (EST-5)
Reported by: Trained Spotter

Rain changed to snow across coastal York County in the morning hours of May 9th with a light coating falling in some towns by midday. Berwick and Biddeford recorded a trace.