Mattoon Weather in August

August in Mattoon typically sees daytime highs of 30°C (86°F) and nighttime lows of 18°C (64°F). Rainfall is also possible this month, so it's worth packing an umbrella.

Rainfall in Mattoon in August

You can expect rain on roughly 8 days based on historical data, averaging 66 mm (2.6 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Mattoon in August

Temperatures in Mattoon in August top out at 30°C (86°F) and drop to 18°C (64°F) overnight. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 18°C (64°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest. On average, it is the warmest month of the year.

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.