Middletown-Harrisburg, PA
Pennsylvania · Records since 1888–2026
Records for July 28
🔥 Record High
99°F
July 28, 1941
+13° from 86° normal❄ Record Low
51°F
July 28, 1962
-17° from 68° normal
🌞 Normal high: 86°F 🌑 Normal low: 68°F 1991–2020 normals
All-Time Records — Middletown-Harrisburg
107°F
Hottest Day Ever
Jul 3, 1966
-22°F
Coldest Day Ever
Jan 21, 1994
9.13"
Wettest Day Ever
Jun 22, 1972
26.4"
Most Snow in One Day
Jan 23, 2016
Top 10 Record Highs — July 28
| # | Temp | Date |
|---|---|---|
| 🏆 | 99°F | July 28, 1941 |
| 2 | 99°F | July 28, 1940 |
| 3 | 98°F | July 28, 1993 |
| 4 | 98°F | July 28, 1963 |
| 5 | 96°F | July 28, 1999 |
| 6 | 96°F | July 28, 1952 |
| 7 | 95°F | July 28, 2023 |
| 8 | 95°F | July 28, 1954 |
| 9 | 95°F | July 28, 1944 |
| 10 | 95°F | July 28, 1931 |
Top 5 Record Lows — July 28
| # | Temp | Date |
|---|---|---|
| 🥶 | 51°F | July 28, 1962 |
| 2 | 53°F | July 28, 1977 |
| 3 | 53°F | July 28, 1903 |
| 4 | 54°F | July 28, 1946 |
| 5 | 55°F | July 28, 1893 |
Heat Wave Summary — Middletown-Harrisburg
threshold: 92°F (90th percentile of historical Jun–Aug highs)4.1
Avg heat wave length
days (historical)
97°
Avg peak temp
during heat waves
19
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
92 of 207 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1888–202614
2026 so far
20
Avg/year 1970–2025
29
Avg/year (last 10 complete)
60
Most in a year (1966)
Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Middletown-Harrisburg
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 22, 1999 – Aug 1, 1999 | 11 | 99°F (Jul 31) | 96°F | 72°F |
| 2 | Jul 16, 1991 – Jul 24, 1991 | 9 | 103°F (Jul 23) | 98°F | 71°F |
| 3 | Aug 27, 1953 – Sep 4, 1953 | 9 | 102°F (Sep 2) | 98°F | 70°F |
| 4 | Aug 27, 1973 – Sep 4, 1973 | 9 | 100°F (Aug 28) | 95°F | 71°F |
| 5 | Jun 20, 1943 – Jun 28, 1943 | 9 | 98°F (Jun 25) | 95°F | 69°F |
| 6 | Jun 27, 1966 – Jul 4, 1966 | 8 | 107°F (Jul 3) | 99°F | 69°F |
| 7 | Jul 17, 2011 – Jul 24, 2011 | 8 | 103°F (Jul 22) | 96°F | 75°F |
| 8 | Aug 10, 1944 – Aug 17, 1944 | 8 | 101°F (Aug 12) | 97°F | 70°F |
| 9 | Jul 4, 1988 – Jul 11, 1988 | 8 | 101°F (Jul 7) | 97°F | 68°F |
| 10 | Jul 28, 2002 – Aug 4, 2002 | 8 | 100°F (Aug 2) | 96°F | 73°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
35
2026 so far
above-normal nights
41.0
Avg / summer
1970–2020
70
Most in a summer
2020
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
18.04"
2026 YTD
Normal: 24.79"
-6.75"
3.45"
July so far
July normal: 4.74"
-1.29"
4.18"
Summer so far
Summer normal: 12.49"
-8.31"
3
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")