Duluth, MN
Minnesota · Records since 1874–2026
☁️ 66°F
Currently in Duluth
As of 8:00 PM CDT
Records for July 28
🔥 Record High
97°F
July 28, 2006
+19° from 78° normal❄ Record Low
45°F
July 28, 1992
-12° from 57° normal
🌞 Normal high: 78°F 🌑 Normal low: 57°F 1991–2020 normals
All-Time Records — Duluth
106°F
Hottest Day Ever
Jul 13, 1936
-41°F
Coldest Day Ever
Jan 2, 1885
5.20"
Wettest Day Ever
Jul 21, 1909
24.1"
Most Snow in One Day
Nov 1, 1991
Top 10 Record Highs — July 28
| # | Temp | Date |
|---|---|---|
| 🏆 | 97°F | July 28, 2006 |
| 2 | 96°F | July 28, 1988 |
| 3 | 95°F | July 28, 1947 |
| 4 | 94°F | July 28, 1931 |
| 5 | 94°F | July 28, 1916 |
| 6 | 92°F | July 28, 1890 |
| 7 | 89°F | July 28, 1975 |
| 8 | 89°F | July 28, 1960 |
| 9 | 89°F | July 28, 1950 |
| 10 | 89°F | July 28, 1881 |
Top 5 Record Lows — July 28
| # | Temp | Date |
|---|---|---|
| 🥶 | 45°F | July 28, 1992 |
| 2 | 46°F | July 28, 1971 |
| 3 | 46°F | July 28, 1928 |
| 4 | 46°F | July 28, 1925 |
| 5 | 46°F | July 28, 1904 |
Heat Wave Summary — Duluth
threshold: 84°F (90th percentile of historical Jun–Aug highs)3.8
Avg heat wave length
days (historical)
90°
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
100 of 207 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1874–20264
2026 so far
3
Avg/year 1970–2025
3
Avg/year (last 10 complete)
14
Most in a year (1936)
Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Duluth
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Aug 1, 1930 – Aug 8, 1930 | 8 | 97°F (Aug 1) | 91°F | 65°F |
| 2 | Jul 1, 2020 – Jul 8, 2020 | 8 | 93°F (Jul 2) | 88°F | 62°F |
| 3 | Aug 1, 1878 – Aug 8, 1878 | 8 | 92°F (Aug 7) | 87°F | 66°F |
| 4 | Jul 7, 1936 – Jul 13, 1936 | 7 | 106°F (Jul 13) | 99°F | 71°F |
| 5 | Aug 22, 1969 – Aug 28, 1969 | 7 | 90°F (Aug 28) | 86°F | 58°F |
| 6 | Jul 4, 1988 – Jul 9, 1988 | 6 | 97°F (Jul 7) | 90°F | 63°F |
| 7 | Jul 23, 2006 – Jul 28, 2006 | 6 | 97°F (Jul 28) | 88°F | 62°F |
| 8 | Jul 12, 2006 – Jul 17, 2006 | 6 | 96°F (Jul 15) | 89°F | 64°F |
| 9 | Jun 8, 1956 – Jun 13, 1956 | 6 | 92°F (Jun 10) | 89°F | 59°F |
| 10 | Jul 11, 2012 – Jul 16, 2012 | 6 | 92°F (Jul 16) | 88°F | 64°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
36
2026 so far
above-normal nights
39.7
Avg / summer
1970–2020
67
Most in a summer
1878
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
14.85"
2026 YTD
Normal: 17.10"
-2.25"
2.28"
July so far
July normal: 3.92"
-1.64"
6.56"
Summer so far
Summer normal: 12.04"
-5.48"
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")