Williamsport, PA
Pennsylvania · Records since 1895–2026
☁️ 84°F
Currently in Williamsport
As of 8:00 PM EDT
Records for July 28
🔥 Record High
100°F
July 28, 1949
+15° from 85° normal❄ Record Low
47°F
July 28, 1903
-16° from 63° normal
🌞 Normal high: 85°F 🌑 Normal low: 63°F 1991–2020 normals
All-Time Records — Williamsport
106°F
Hottest Day Ever
Jul 9, 1936
-20°F
Coldest Day Ever
Jan 21, 1994
8.66"
Wettest Day Ever
Jun 22, 1972
23.0"
Most Snow in One Day
Feb 22, 1902
Top 10 Record Highs — July 28
| # | Temp | Date |
|---|---|---|
| 🏆 | 100°F | July 28, 1949 |
| 2 | 98°F | July 28, 1993 |
| 3 | 98°F | July 28, 1929 |
| 4 | 96°F | July 28, 1921 |
| 5 | 95°F | July 28, 1941 |
| 6 | 95°F | July 28, 1931 |
| 7 | 94°F | July 28, 1932 |
| 8 | 94°F | July 28, 1930 |
| 9 | 93°F | July 28, 2023 |
| 10 | 93°F | July 28, 1999 |
Top 5 Record Lows — July 28
| # | Temp | Date |
|---|---|---|
| 🥶 | 47°F | July 28, 1903 |
| 2 | 48°F | July 28, 1962 |
| 3 | 49°F | July 28, 1977 |
| 4 | 49°F | July 28, 1946 |
| 5 | 49°F | July 28, 1937 |
Heat Wave Summary — Williamsport
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
97 of 207 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1895–202613
2026 so far
16
Avg/year 1970–2025
22
Avg/year (last 10 complete)
42
Most in a year (1988)
Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Williamsport
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 4, 1988 – Jul 18, 1988 | 15 | 103°F (Jul 16) | 97°F | 64°F |
| 2 | Jul 14, 1955 – Jul 23, 1955 | 10 | 100°F (Jul 21) | 95°F | 64°F |
| 3 | Aug 27, 1953 – Sep 4, 1953 | 9 | 102°F (Sep 3) | 98°F | 64°F |
| 4 | Jun 18, 1923 – Jun 26, 1923 | 9 | 101°F (Jun 20) | 97°F | 65°F |
| 5 | Jul 17, 2011 – Jul 24, 2011 | 8 | 103°F (Jul 22) | 95°F | 70°F |
| 6 | Aug 2, 1930 – Aug 9, 1930 | 8 | 102°F (Aug 4) | 98°F | 63°F |
| 7 | Aug 10, 1944 – Aug 17, 1944 | 8 | 101°F (Aug 13) | 96°F | 65°F |
| 8 | Jul 16, 1991 – Jul 23, 1991 | 8 | 101°F (Jul 19) | 97°F | 65°F |
| 9 | Jul 7, 1993 – Jul 14, 1993 | 8 | 98°F (Jul 10) | 95°F | 68°F |
| 10 | Aug 11, 2002 – Aug 18, 2002 | 8 | 96°F (Aug 12) | 93°F | 66°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
30
2026 so far
above-normal nights
43.9
Avg / summer
1970–2020
75
Most in a summer
1901
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
17.48"
2026 YTD
Normal: 23.70"
-6.22"
1.56"
July so far
July normal: 4.64"
-3.08"
3.10"
Summer so far
Summer normal: 12.66"
-9.56"
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")