Dayton weather by month
Average highs run from 37°F in January to 86°F in July, and January nights average 22°F. It gets 41 inches of rain and melted snow a year and 25 inches of snow. Nights drop below freezing about 110 times a year. The most comfortable months are April and June to October.
Best time to visit Dayton
For comfortable weather, go in April and June to October. In those months the average high stays between 62°F and 86°F, nights average 42°F or warmer, and rain stays under 4.5 inches for the month.
Month by month
| Month | High | Low | Precip. | Snow | Wet days | Days 90°F+ | Nights below 32°F | Feels |
|---|---|---|---|---|---|---|---|---|
| January | 37°F | 22°F | 3.1 in | 8.3 in | 6 | 0 | 26 | cold |
| February | 41°F | 25°F | 2.4 in | 6.6 in | 6 | 0 | 23 | cold |
| March | 52°F | 33°F | 3.5 in | 3.9 in | 7 | 0 | 17 | cool |
| April | 65°F | 43°F | 4.5 in | 0.4 in | 9 | 0 | 5 | mild |
| May | 74°F | 54°F | 4.5 in | 0.0 in | 9 | 0 | 0 | mild |
| June | 83°F | 63°F | 4.1 in | 0.0 in | 7 | 3 | 0 | warm |
| July | 86°F | 66°F | 4.0 in | 0.0 in | 7 | 6 | 0 | warm |
| August | 85°F | 64°F | 3.0 in | 0.0 in | 5 | 4 | 0 | warm |
| September | 79°F | 57°F | 3.3 in | 0.0 in | 5 | 2 | 0 | warm |
| October | 66°F | 46°F | 3.0 in | 0.2 in | 6 | 0 | 2 | mild |
| November | 53°F | 35°F | 3.1 in | 0.8 in | 6 | 0 | 14 | cool |
| December | 42°F | 27°F | 3.1 in | 4.8 in | 6 | 0 | 23 | cold |
| Year | 63°F avg | 45°F avg | 41.3 in | 25.0 in | 79 | 16 | 110 |
"Wet days" are days with at least 0.1 inch of precipitation. "Feels" is a plain-language label for the average high. Normals for 1991-2020 from NOAA NCEI, station Dayton Intl. Airport, OH (USW00093815), 10.8 miles from the city center. Averages describe typical conditions, not a forecast.
Sunrise, sunset and daylight in Dayton
The shortest day is December 21, with 9h 21m of daylight; the longest is June 21, with 14h 59m. The earliest sunset comes around December 4 (5:11 pm) and the latest around June 21 (9:08 pm). The sun sets after 8 pm on 158 days a year.
| On the 15th of | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:56 am | 5:36 pm | 9h 40m |
| February | 7:29 am | 6:12 pm | 10h 44m |
| March | 7:48 am | 7:43 pm | 11h 55m |
| April | 6:59 am | 8:14 pm | 13h 15m |
| May | 6:22 am | 8:44 pm | 14h 22m |
| June | 6:08 am | 9:06 pm | 14h 58m |
| July | 6:21 am | 9:03 pm | 14h 42m |
| August | 6:49 am | 8:32 pm | 13h 43m |
| September | 7:18 am | 7:45 pm | 12h 27m |
| October | 7:47 am | 6:57 pm | 11h 10m |
| November | 7:21 am | 5:20 pm | 9h 59m |
| December | 7:51 am | 5:12 pm | 9h 22m |
Calculated for 2026 at the center of Dayton with NOAA's solar equations, in local clock time (Eastern Time, including daylight saving time where it applies). Times shift by a minute or two from year to year.
Is Dayton getting warmer?
The last 10 years averaged 2.8°F warmer than the 20th century. See the climate stripes for Dayton.Frequently asked questions
What is the warmest month in Dayton?
July is the warmest month, with an average high of 86°F and an average low of 66°F (NOAA 1991-2020 normals).
What is the coldest month in Dayton?
January is the coldest, with average lows of 22°F and highs of 37°F.
What is the rainiest month in Dayton?
May gets the most precipitation, 4.5 inches on average. February is the driest at 2.4 inches.
Does it snow in Dayton?
Yes. Dayton averages 25 inches of snow a year.
When is the best time to visit Dayton?
For comfortable weather, April and June to October. Those months average highs between 62 and 86°F with lows of 42°F or more and modest rain.
Thinking of moving to Dayton?
See what homes, rent and everyday prices cost, who lives there and how it compares with nearby cities on the full Dayton profile.
Compare the weather: Dayton vs Cincinnati, Dayton vs Columbus, Dayton vs Fishers, Dayton vs Noblesville.