Current Weather and Forecast in Dayton, OH
Ohio, United States 🇺🇸
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About the weather in Dayton
Dayton has a humid subtropical climate. July is the warmest month, with average highs of 84°, and January the coldest, when nights fall to around 24°. May brings the most rain, on about 14 days, while July is the sunniest, with 11.8 hours of sunshine a day. Over a whole year it rains on roughly 131 days.
Dayton climate guide: monthly averages, seasons and the best time to visit
Common questions
What is the best month to go to Dayton?
Aim for August to October and April if you get the choice: warm days, manageable rainfall and plenty of daylight line up, and highs average 72°F (22°C) against roughly 10 wet days a month. For the same question asked the other way round, see where else is warm in August.
What is the hottest month in Dayton?
July, averaging 84°F (29°C) by day and 67°F (20°C) overnight. The hottest single day in our 2015-2024 record for this location reached 95°F (35°C).
Is there snow in Dayton?
Yes - about 12 days a year carry measurable snowfall, concentrated November through April.
When is Dayton at its coldest?
January, with highs of 38°F (3°C) and lows near 24°F (-5°C). The coldest day in the 2015-2024 record fell to -17°F (-27°C).
How often does it rain in Dayton?
About 131 days bring measurable precipitation, totalling 44.6 inches (1134 mm). That works out at roughly 8.7 mm on an average wet day.
What is the rainiest month in Dayton?
May, at 4.6 inches (117 mm) over about 14 days. September is the driest month, at 2.9 inches (73 mm).
What is the average temperature in Dayton?
54°F (12°C) across all twelve months - about 63°F (17°C) by day and 46°F (8°C) after dark.