Duluth Weather in July
Average highs run from 73°F on July 1 to 77°F on July 31, and lows from 55°F to 60°F. Normal precipitation for the month is 3.88 in over about 10 wet days.
July day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
July at a glance
- Average high
- 76°F
- Average low
- 58°F
- Precipitation
- 3.88 in
- Record high
- 105°FJul 14, 1936
- Record low
- 34°FJul 8, 1961
- Chance of a freeze
- 0%
- Days of 90°F or more
- 1.8
- Daylight
- 15 h 48 min to 14 h 54 min
- Cloud cover
- 63%
- Humidity
- 76%
- Dew point
- 57°F
- Wind
- 8.1 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Jul 1 | 73°F | 55°F | 95°F 1910 | 36°F 2012 | 37% | 0% |
| Jul 2 | 73°F | 55°F | 92°F 1910 | 43°F 1948 | 37% | 0% |
| Jul 3 | 74°F | 55°F | 92°F 2012 | 35°F 1963 | 37% | 0% |
| Jul 4 | 74°F | 56°F | 95°F 2021 | 35°F 1961 | 37% | 0% |
| Jul 5 | 74°F | 56°F | 97°F 1948 | 37°F 1956 | 37% | 0% |
| Jul 6 | 74°F | 56°F | 99°F 1948 | 36°F 1965 | 37% | 0% |
| Jul 7 | 75°F | 56°F | 100°F 1988 | 40°F 1961 | 36% | 0% |
| Jul 8 | 75°F | 57°F | 100°F 1936 | 34°F 1961 | 36% | 0% |
| Jul 9 | 75°F | 57°F | 100°F 1936 | 43°F 1950 | 36% | 0% |
| Jul 10 | 76°F | 57°F | 99°F 1936 | 39°F 1965 | 36% | 0% |
| Jul 11 | 76°F | 57°F | 99°F 1921 | 39°F 1965 | 35% | 0% |
| Jul 12 | 76°F | 58°F | 95°F 2026 | 38°F 1964 | 35% | 0% |
| Jul 13 | 76°F | 58°F | 102°F 1936 | 41°F 1959 | 35% | 0% |
| Jul 14 | 76°F | 58°F | 105°F 1936 | 39°F 1960 | 34% | 0% |
| Jul 15 | 77°F | 58°F | 101°F 2006 | 39°F 1966 | 34% | 0% |
| Jul 16 | 77°F | 59°F | 94°F 1964 | 42°F 1950 | 34% | 0% |
| Jul 17 | 77°F | 59°F | 98°F 1936 | 41°F 1951 | 33% | 0% |
| Jul 18 | 77°F | 59°F | 95°F 1975 | 38°F 1926 | 33% | 0% |
| Jul 19 | 77°F | 59°F | 95°F 1932 | 38°F 1965 | 33% | 0% |
| Jul 20 | 77°F | 59°F | 94°F 2011 | 35°F 1950 | 33% | 0% |
| Jul 21 | 77°F | 59°F | 95°F 1960 | 42°F 1966 | 32% | 0% |
| Jul 22 | 77°F | 59°F | 93°F 2016 | 42°F 1985 | 32% | 0% |
| Jul 23 | 77°F | 59°F | 97°F 1941 | 44°F 1957 | 32% | 0% |
| Jul 24 | 77°F | 60°F | 93°F 1940 | 42°F 1957 | 32% | 0% |
| Jul 25 | 77°F | 60°F | 92°F 1951 | 35°F 1926 | 32% | 0% |
| Jul 26 | 77°F | 60°F | 94°F 1989 | 41°F 2012 | 32% | 0% |
| Jul 27 | 77°F | 60°F | 96°F 1930 | 42°F 1965 | 32% | 0% |
| Jul 28 | 77°F | 60°F | 101°F 2006 | 42°F 1956 | 31% | 0% |
| Jul 29 | 77°F | 60°F | 97°F 1916 | 40°F 1965 | 31% | 0% |
| Jul 30 | 77°F | 60°F | 97°F 1975 | 43°F 1964 | 31% | 0% |
| Jul 31 | 77°F | 60°F | 93°F 2007 | 40°F 1924 | 31% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- July 1
- sunrise 5:18 AM, sunset 9:06 PM
- July 31
- sunrise 5:47 AM, sunset 8:41 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00478349 (Superior), public domain. Records: NOAA GHCN-Daily, station USC00478349, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.