Grinnell Weather in May
May in Grinnell averages 22°C (72°F) during the day and 10°C (50°F) at night. Quite a bit of rainfall is typical this month, with around 122 mm (4.8 in) on average. An umbrella is a good idea.
Rainfall in Grinnell in May
Rain is expected on roughly 13 days, totalling around 122 mm (4.8 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Grinnell in May
May in Grinnell brings pleasant temperatures, with highs of 22°C (72°F) and nights around 10°C (50°F). Conditions are often most pleasant around the middle of the day. Nights drop to around 10°C (50°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.If you prefer enjoying temperate temperatures and rain-free days, September typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Grinnell's climate page.
Grinnell Temperature in May
Min Temperature
10°C (50°F)
Max Temperature
22°C (72°F)
Chance of Rain
42%
Precipitation
122 mm (4.8 in)
Rainy days
13 days
Best Places in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →
perfect weather
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tolerable
unpleasant
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What to Wear in Grinnell in May
For Grinnell in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.What To Do in Grinnell in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Grinnell's climate page.
See the full Grinnell climate overview or explore weather in the United States of America.
