Johnsburg

What is the climate like in Johnsburg?

The best time to visit Johnsburg is typically June – September, with trip comfort peaking in September (6.9/10). Johnsburg is warmest in July, when daily highs average 83°F (28°C), and coolest in January, when lows fall to about 19°F (-7°C). The wettest month is typically May and the driest is February; the year sees roughly 38 in (969 mm) of precipitation.

• Best time to visitJune – September — comfort peaks in September (6.9/10)
• Warmest monthJuly — average high 83°F (28°C)
• Coolest monthJanuary — average low 19°F (-7°C)
• Wettest monthMay (4.7 in (119 mm))
• Driest monthFebruary (1.9 in (48 mm))
• Annual precipitation38 in (969 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromMchenry Stratton Lock/dam, 8 km away (1992-2026)