Mason City Weather in September

September in Mason City brings high temperatures, with highs of 23°C (73°F) and nights dropping to 10°C (50°F). Rainfall is on the higher side this month, averaging around 84 mm (3.3 in), so keep a rain jacket handy.

Rainfall in Mason City in September

Typically, you can expect about 9 days of rain this month, with 84 mm (3.3 in) on average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Mason City in September

Mason City has excellent weather in September, with days reaching 23°C (73°F) and nights cooling to 10°C (50°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights fall to 10°C (50°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Mason City in September

The city usually sees around 240 hours of sunlight, indicating many sunny days , a great month for sightseeing.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. July, August and September typically offer the best weather for Mason City.