Keweenaw County Weather in August
Average highs run from 73°F on August 1 to 70°F on August 31, and lows from 59°F to 56°F. Normal precipitation for the month is 2.33 in over about 9 wet days.
August day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
August at a glance
- Average high
- 72°F
- Average low
- 58°F
- Precipitation
- 2.33 in
- Record high
- 98°FAug 24, 1948
- Record low
- 34°FAug 26, 1950
- Chance of a freeze
- 0%
- Daylight
- 14 h 54 min to 13 h 24 min
- Cloud cover
- 72%
- Humidity
- 83%
- Dew point
- 56°F
- Wind
- 11.4 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Aug 1 | 73°F | 59°F | 92°F 2007 | 47°F 1950 | 29% |
| Aug 2 | 73°F | 59°F | 89°F 1983 | 42°F 1952 | 29% |
| Aug 3 | 73°F | 59°F | 87°F 1989 | 39°F 1952 | 28% |
| Aug 4 | 73°F | 59°F | 87°F 1989 | 37°F 1951 | 28% |
| Aug 5 | 73°F | 59°F | 94°F 2001 | 44°F 1971 | 28% |
| Aug 6 | 73°F | 59°F | 88°F 1996 | 45°F 1952 | 28% |
| Aug 7 | 73°F | 59°F | 92°F 1983 | 44°F 1952 | 29% |
| Aug 8 | 73°F | 59°F | 95°F 2005 | 41°F 1964 | 29% |
| Aug 9 | 73°F | 59°F | 92°F 1949 | 41°F 1964 | 29% |
| Aug 10 | 73°F | 59°F | 88°F 1988 | 38°F 1951 | 29% |
| Aug 11 | 73°F | 59°F | 88°F 1965 | 39°F 1950 | 29% |
| Aug 12 | 73°F | 59°F | 87°F 1975 | 39°F 1950 | 29% |
| Aug 13 | 73°F | 59°F | 89°F 2018 | 40°F 1992 | 29% |
| Aug 14 | 73°F | 59°F | 95°F 1978 | 43°F 2004 | 29% |
| Aug 15 | 73°F | 59°F | 91°F 2021 | 39°F 1971 | 30% |
| Aug 16 | 73°F | 58°F | 87°F 1990 | 42°F 1954 | 30% |
| Aug 17 | 73°F | 58°F | 89°F 1969 | 39°F 2007 | 30% |
| Aug 18 | 73°F | 58°F | 90°F 2021 | 35°F 1950 | 30% |
| Aug 19 | 72°F | 58°F | 97°F 1976 | 39°F 1949 | 31% |
| Aug 20 | 72°F | 58°F | 93°F 1976 | 40°F 1949 | 31% |
| Aug 21 | 72°F | 58°F | 93°F 1976 | 40°F 1952 | 31% |
| Aug 22 | 72°F | 58°F | 85°F 2008 | 36°F 1950 | 31% |
| Aug 23 | 72°F | 57°F | 87°F 2021 | 38°F 2009 | 31% |
| Aug 24 | 72°F | 57°F | 98°F 1948 | 39°F 2017 | 31% |
| Aug 25 | 72°F | 57°F | 92°F 1993 | 36°F 1950 | 32% |
| Aug 26 | 71°F | 57°F | 93°F 1948 | 34°F 1950 | 32% |
| Aug 27 | 71°F | 57°F | 89°F 1948 | 38°F 2023 | 32% |
| Aug 28 | 71°F | 56°F | 92°F 1973 | 41°F 1965 | 32% |
| Aug 29 | 71°F | 56°F | 92°F 1991 | 42°F 1976 | 32% |
| Aug 30 | 71°F | 56°F | 91°F 2010 | 40°F 2023 | 33% |
| Aug 31 | 70°F | 56°F | 91°F 2008 | 38°F 1970 | 33% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- August 1
- sunrise 6:32 AM, sunset 9:26 PM
- August 31
- sunrise 7:11 AM, sunset 8:35 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00094899 (Copper Harbor), public domain. Records: NOAA GHCN-Daily, station USW00014858, 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.