Quarterly Climate Impacts and Outlook for the Gulf of Maine Region for September–November 2023. Dated December 2023.

Autumn (averaged over September, October, and November) was as much as 3°C (5°F) warmer than normal. It was among the five warmest autumns on record for Charlo, New Brunswick, and Caribou and Portland, Maine. Precipitation for autumn (accumulated from September to November) ranged from 50% of normal to 125% of normal.

Quarterly Climate Impacts and Outlook for the Northeast Region for September–November 2023. Dated December 2023.

The Northeast had its 12th-warmest autumn at 1.4°F above normal. It was among the 20 warmest autumns for 10 states. The Northeast saw 86% of normal autumn precipitation, in the middle third of all years.

Quarterly Climate Impacts and Outlook for the Northeast Region for June–August 2023. Dated September 2023.

The Northeast's summer average temperature was 0.3°F below normal, in the middle third of all years. It was among the 20 warmest summers for two states. The Northeast had its third-wettest summer with 127% of normal precipitation. Summer was record wet for New Hampshire and Vermont and among the 20 wettest for six other states.

Quarterly Climate Impacts and Outlook for the Gulf of Maine Region for June–August 2023. Dated September 2023.

Summer was up to 2°C (4°F) warmer than normal.  Precipitation for the summer season ranged from near normal to more than 200% of normal. It was the wettest summer on record for several Maritimes sites and among the 10 wettest for a few other sites in the region.