Grinnell

What is the climate like in Grinnell?

The best time to visit Grinnell is typically June – September, with trip comfort peaking in August (6.9/10). Grinnell is warmest in July, when daily highs average 84°F (29°C), and coolest in January, when lows fall to about 16°F (-9°C). The wettest month is typically May and the driest is February; the year sees roughly 39 in of precipitation.

• Best time to visitJune – September — comfort peaks in August (6.9/10)
• Warmest monthJuly — average high 84°F (29°C)
• Coolest monthJanuary — average low 16°F (-9°C)
• Wettest monthMay (5.5 in)
• Driest monthFebruary (1.5 in)
• Annual precipitation39 in