Weather Almanac: Duluth, MN 55807

🗓️ Historical norms for May

May avg. precipitation
🌧️ 3.23"
May days below freezing
📉 ≈3.5 days
Average May lows 36°F – 40°F
USDA Zone
4b
Annual extreme lows -25°F to -20°F
Last Spring Frost (36°F)
🌷 Jun 8
First Fall Frost (36°F)
🍂 Sep 12

Temperature climatic data from weather station: DULUTH HARBOR STN (USC00212246)

Precipitation climatic data from weather station: DULUTH (USW00014913)

Agricultural climatic data from weather station: DULUTH (USW00014913)