Allentown, PA
Pennsylvania · Records since 1922–2026
☀️ 74°F
Feels like 80°
Currently in Allentown
As of 8:00 PM EDT
Records for July 28
🔥 Record High
97°F
July 28, 1949
+11° from 86° normal❄ Record Low
52°F
July 28, 1962
-13° from 65° normal
🌞 Normal high: 86°F 🌑 Normal low: 65°F 1991–2020 normals
All-Time Records — Allentown
105°F
Hottest Day Ever
Jul 3, 1966
-15°F
Coldest Day Ever
Jan 21, 1994
8.71"
Wettest Day Ever
Oct 8, 2005
30.2"
Most Snow in One Day
Jan 23, 2016
Top 10 Record Highs — July 28
| # | Temp | Date |
|---|---|---|
| 🏆 | 97°F | July 28, 1949 |
| 2 | 97°F | July 28, 1941 |
| 3 | 96°F | July 28, 1999 |
| 4 | 96°F | July 28, 1963 |
| 5 | 96°F | July 28, 1929 |
| 6 | 95°F | July 28, 1954 |
| 7 | 94°F | July 28, 2016 |
| 8 | 94°F | July 28, 1955 |
| 9 | 94°F | July 28, 1944 |
| 10 | 94°F | July 28, 1931 |
Top 5 Record Lows — July 28
| # | Temp | Date |
|---|---|---|
| 🥶 | 52°F | July 28, 1962 |
| 2 | 53°F | July 28, 2001 |
| 3 | 53°F | July 28, 1977 |
| 4 | 54°F | July 28, 1946 |
| 5 | 55°F | July 28, 1996 |
Heat Wave Summary — Allentown
threshold: 91°F (90th percentile of historical Jun–Aug highs)4.3
Avg heat wave length
days (historical)
96°
Avg peak temp
during heat waves
9
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
83 of 207 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1922–202615
2026 so far
17
Avg/year 1970–2025
23
Avg/year (last 10 complete)
41
Most in a year (1966)
Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Allentown
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jun 18, 1923 – Jun 26, 1923 | 9 | 100°F (Jun 20) | 96°F | 68°F |
| 2 | Jul 15, 1955 – Jul 23, 1955 | 9 | 100°F (Jul 22) | 95°F | 67°F |
| 3 | Jul 28, 2002 – Aug 5, 2002 | 9 | 99°F (Aug 2) | 94°F | 69°F |
| 4 | Aug 11, 2002 – Aug 19, 2002 | 9 | 99°F (Aug 14) | 95°F | 67°F |
| 5 | Jun 20, 1943 – Jun 28, 1943 | 9 | 98°F (Jun 26) | 94°F | 68°F |
| 6 | Jul 17, 2011 – Jul 24, 2011 | 8 | 104°F (Jul 22) | 96°F | 71°F |
| 7 | Aug 27, 1953 – Sep 3, 1953 | 8 | 99°F (Aug 31) | 97°F | 66°F |
| 8 | Aug 2, 1930 – Aug 9, 1930 | 8 | 98°F (Aug 4) | 94°F | 67°F |
| 9 | Aug 10, 1944 – Aug 17, 1944 | 8 | 98°F (Aug 12) | 96°F | 68°F |
| 10 | Aug 28, 1973 – Sep 4, 1973 | 8 | 97°F (Aug 28) | 94°F | 69°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
27
2026 so far
above-normal nights
42.6
Avg / summer
1970–2020
59
Most in a summer
1994
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
19.02"
2026 YTD
Normal: 26.02"
-7.00"
1.95"
July so far
July normal: 5.30"
-3.35"
4.36"
Summer so far
Summer normal: 14.26"
-9.90"
2
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")