Quarterly Climate Impacts and Outlook for the Great Lakes Region for June - August 2021. Dated September 2021.
Temperatures across the basin were as much as 2°C (4°F) above normal for the summer. For summer and each month of the season, all lake basins except Superior saw near- or above-average precipitation.
Quarterly Climate Impacts and Outlook for the Great Lakes Region for March - May 2021. Dated June 2021.
Spring was up to 3°C (5°F) warmer than normal. Lake temperatures were also slightly above average this spring. All basins except Superior were drier than average every month of spring, with the overall basin seeing 68% of average precipitation in March, 81% of average in April, and 62% of average in May. Spring precipitation was 70% of average.
Quarterly Climate Impacts and Outlook for the Great Lakes Region for December 2020 – February 2021. Dated March 2021.
Winter temperatures ranged from 1°C (2°F) below to 3°C (5°F) above normal. Winter precipitation was below average, with the basin seeing 55% of average.
Quarterly Climate Impacts and Outlook for the Great Lakes Region for September – November 2020. Dated December 2020.
While conditions were overall fairly normal throughout the fall, record-setting warmth, especially in the first half of November, was the most notable event this season. Fall precipitation was below or near average, with the basin seeing 87% of average.
Quarterly Climate Impacts and Outlook for the Great Lakes Region for June – August 2020. Dated September 2020.
Summer was overall very warm across the basin. Several areas of the basin, stretching from Minnesota to Michigan and New York, had one of their top 10 warmest summers for minimum air temperature. In eastern and southern Ontario, temperatures remained above normal almost continuously from mid-June to mid-August. Summer precipitation was near or above average except in the Erie basin, with the overall basin seeing 105% of average.
Quarterly Climate Impacts and Outlook for the Great Lakes Region for March – May 2020. Dated June 2020.
Spring temperatures averaged out to be within 1°C (2°F) of normal in most areas. Spring precipitation ranged from 70% to 112% of average, with the overall basin seeing 98% of average.
Quarterly Climate Impacts and Outlook for the Great Lakes Region for December 2019 – February 2020. Dated March 2020.
Most of the Great Lakes states had one of their top 10 warmest winters on record. Winter was drier with the basin seeing 84% of average. There was below average ice cover due to warm air temperatures and lack of consecutive days below freezing.
Quarterly Climate Impacts and Outlook for the Great Lakes Region for September – November 2019. Dated December 2019.
Autumn temperatures ranged from 2°C (4°F) below normal to 2°C (4°F) above normal. Autumn precipitation ranged from 88% to 125% of average, with the overall basin seeing 115% of average.
Quarterly Climate Impacts and Outlook for the Great Lakes Region for June – August 2019. Dated September 2019.
June temperatures ranged from 3°C (5°F) below normal to near normal. July was warm, with temperatures up to 3°C (5°F) above normal. Temperatures during August and for summer were within 1°C (2°F) of normal for most of the basin. The basin experienced a wet period from the fall of 2018 through the spring. This extended into June, with all basins but Superior being wetter than average and the overall basin seeing 109% of average in June.
Quarterly Climate Impacts and Outlook for the Great Lakes Region for March – May 2019. Dated June 2019.
Across much of the basin, spring averaged out to be colder than normal, with temperatures as much as 3°C (5°F) below normal while the far southeastern areas were near normal for the spring. Spring precipitation ranged from 101% to 118% of average.