Dayton, OH
Ohio · Records since 1893–2026
🌧️ 74°F
Feels like 81°
Currently in Dayton
As of 8:00 PM EDT
Records for July 28
🔥 Record High
102°F
July 28, 1901
+16° from 86° normal❄ Record Low
53°F
July 28, 2013
-13° from 66° normal
🌞 Normal high: 86°F 🌑 Normal low: 66°F 1991–2020 normals
All-Time Records — Dayton
108°F
Hottest Day Ever
Jul 22, 1901
-28°F
Coldest Day Ever
Feb 13, 1899
4.16"
Wettest Day Ever
Jan 21, 1959
12.4"
Most Snow in One Day
Jan 25, 2026
Top 10 Record Highs — July 28
| # | Temp | Date |
|---|---|---|
| 🏆 | 102°F | July 28, 1901 |
| 2 | 98°F | July 28, 1930 |
| 3 | 97°F | July 28, 2011 |
| 4 | 97°F | July 28, 1952 |
| 5 | 97°F | July 28, 1903 |
| 6 | 96°F | July 28, 1993 |
| 7 | 96°F | July 28, 1941 |
| 8 | 96°F | July 28, 1940 |
| 9 | 96°F | July 28, 1916 |
| 10 | 93°F | July 28, 1988 |
Top 5 Record Lows — July 28
| # | Temp | Date |
|---|---|---|
| 🥶 | 53°F | July 28, 2013 |
| 2 | 54°F | July 28, 1977 |
| 3 | 54°F | July 28, 1900 |
| 4 | 55°F | July 28, 2004 |
| 5 | 55°F | July 28, 1920 |
Heat Wave Summary — Dayton
threshold: 92°F (90th percentile of historical Jun–Aug highs)4.4
Avg heat wave length
days (historical)
97°
Avg peak temp
during heat waves
15
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far
2026 Daily High Temperature vs Normal
Year to date
Above normal
Below normal
97 of 207 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1893–20269
2026 so far
22
Avg/year 1970–2025
18
Avg/year (last 10 complete)
62
Most in a year (1899)
Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Dayton
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 6, 1936 – Jul 17, 1936 | 12 | 106°F (Jul 14) | 101°F | 75°F |
| 2 | Jun 29, 1897 – Jul 10, 1897 | 12 | 104°F (Jul 4) | 99°F | 71°F |
| 3 | Sep 5, 1897 – Sep 16, 1897 | 12 | 101°F (Sep 14) | 98°F | 57°F |
| 4 | Jul 20, 1901 – Jul 30, 1901 | 11 | 108°F (Jul 22) | 100°F | 69°F |
| 5 | Aug 9, 1988 – Aug 18, 1988 | 10 | 102°F (Aug 17) | 96°F | 72°F |
| 6 | Jul 13, 1895 – Jul 22, 1895 | 10 | 99°F (Jul 19) | 95°F | 68°F |
| 7 | Aug 26, 1953 – Sep 4, 1953 | 10 | 99°F (Sep 2) | 95°F | 68°F |
| 8 | Jul 21, 1940 – Jul 30, 1940 | 10 | 98°F (Jul 29) | 95°F | 76°F |
| 9 | Jul 18, 1934 – Jul 26, 1934 | 9 | 105°F (Jul 21) | 100°F | 76°F |
| 10 | Aug 4, 1900 – Aug 12, 1900 | 9 | 99°F (Aug 10) | 97°F | 65°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
29
2026 so far
above-normal nights
38.1
Avg / summer
1970–2020
63
Most in a summer
2025
Above-Normal Summer Nights Per Year
Average June–August Low by Decade
Overnight lows · complete decades only
Precipitation
Actual vs. 1991–2020 full-month and full-season normals
28.21"
2026 YTD
Normal: 25.53"
+2.68"
2.82"
July so far
July normal: 3.95"
-1.13"
5.42"
Summer so far
Summer normal: 11.05"
-5.63"
8
2026 heavy rain days
Days with ≥ 1.0"
Monthly Precipitation — Last 24 Months
Blue = actual · dashed line = monthly normal
Annual Precipitation Per Year (1970–2026)
Blue = above average · tan = below average · gold = 2026 (partial)
Heavy Rain Days Per Year (≥ 1.0")
Compare year-to-year changes in days with heavy rainfall (≥ 1.0")