Decorah

What is the climate like in Decorah?

The best time to visit Decorah is typically August – September, with trip comfort peaking in September (6.7/10). Decorah is warmest in July, when daily highs average 82°F (28°C), and coolest in January, when lows fall to about 14°F (-10°C). The wettest month is typically May and the driest is January; the year sees roughly 40 in (1016 mm) of precipitation.

• Best time to visitAugust – September — comfort peaks in September (6.7/10)
• Warmest monthJuly — average high 82°F (28°C)
• Coolest monthJanuary — average low 14°F (-10°C)
• Wettest monthMay (5.1 in (131 mm))
• Driest monthJanuary (1.6 in (40 mm))
• Annual precipitation40 in (1016 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromDecorah, 1 km away (1893-2026)