Portland, ME
Maine · Records since 1874–2026
☀️ 67°F
Currently in Portland
As of 8:00 PM EDT
Records for July 28
🔥 Record High
97°F
July 28, 1894
+17° from 80° normal❄ Record Low
45°F
July 28, 1977
-17° from 62° normal
🌞 Normal high: 80°F 🌑 Normal low: 62°F 1991–2020 normals
All-Time Records — Portland
103°F
Hottest Day Ever
Aug 2, 1975
-39°F
Coldest Day Ever
Feb 16, 1943
11.74"
Wettest Day Ever
Oct 21, 1996
22.3"
Most Snow in One Day
Dec 17, 1970
Top 10 Record Highs — July 28
| # | Temp | Date |
|---|---|---|
| 🏆 | 97°F | July 28, 1894 |
| 2 | 94°F | July 28, 1963 |
| 3 | 94°F | July 28, 1949 |
| 4 | 94°F | July 28, 1931 |
| 5 | 93°F | July 28, 1921 |
| 6 | 92°F | July 28, 2020 |
| 7 | 90°F | July 28, 1973 |
| 8 | 90°F | July 28, 1970 |
| 9 | 90°F | July 28, 1959 |
| 10 | 89°F | July 28, 1999 |
Top 5 Record Lows — July 28
| # | Temp | Date |
|---|---|---|
| 🥶 | 45°F | July 28, 1977 |
| 2 | 48°F | July 28, 2001 |
| 3 | 48°F | July 28, 1946 |
| 4 | 49°F | July 28, 1945 |
| 5 | 50°F | July 28, 1965 |
Heat Wave Summary — Portland
threshold: 86°F (90th percentile of historical Jun–Aug highs)3.7
Avg heat wave length
days (historical)
93°
Avg peak temp
during heat waves
3
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
98 of 207 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1874–20265
2026 so far
5
Avg/year 1970–2025
6
Avg/year (last 10 complete)
16
Most in a year (1955)
Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Portland
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 6, 1988 – Jul 13, 1988 | 8 | 93°F (Jul 11) | 90°F | 65°F |
| 2 | Aug 12, 2002 – Aug 19, 2002 | 8 | 93°F (Aug 14) | 89°F | 66°F |
| 3 | Jul 15, 1991 – Jul 21, 1991 | 7 | 96°F (Jul 21) | 91°F | 65°F |
| 4 | Aug 5, 1876 – Aug 11, 1876 | 7 | 95°F (Aug 7) | 90°F | 68°F |
| 5 | Jul 13, 1952 – Jul 19, 1952 | 7 | 94°F (Jul 14) | 91°F | 62°F |
| 6 | Jul 23, 1970 – Jul 29, 1970 | 7 | 93°F (Jul 24) | 90°F | 64°F |
| 7 | Jul 24, 2020 – Jul 30, 2020 | 7 | 93°F (Jul 27) | 90°F | 70°F |
| 8 | Aug 11, 1944 – Aug 16, 1944 | 6 | 99°F (Aug 11) | 95°F | 68°F |
| 9 | Jul 16, 1977 – Jul 21, 1977 | 6 | 99°F (Jul 21) | 92°F | 65°F |
| 10 | Jul 6, 1993 – Jul 11, 1993 | 6 | 98°F (Jul 10) | 92°F | 67°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
34.0
Avg / summer
1970–2020
63
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
23.93"
2026 YTD
Normal: 26.24"
-2.31"
0.53"
July so far
July normal: 3.43"
-2.90"
5.84"
Summer so far
Summer normal: 11.15"
-5.31"
6
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")