Duluth Weather: August
 |
Average Day Temperature: | 76.5°F |
|
Average Night Temperature: | 61.4°F |
|
Sea Water Temperature: | 67.6°F |
|
Number of Sunny Days: | 13 days |
| Sunshine Hours: | 13.4 - 14.8 hours | |
|
Number of Rainy Days: | 3 days |
| Precipitation Totals: | 1.1 in | |
| detailed information | ||
forecast
| Duluth |
Temperature
| Duluth |
Air Temperature in August, °F
The highest day temperature in August 2025 was 88°F. The lowest night temperature was 47°F. The average values for day and night temperatures during August were 76.6°F и 61.2°F respectivly.
Duluth Water Sea Temperature in August, °F
The average sea surface temperature in August 2025 for Duluth was 69.4°F. The maximum and minimum values were 64.0°F and 73.4°F respectively.
Most of the days in August are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in August, in
Precipitation total in August for Duluth is 1.1 in. It makes august one of the most rainy months of the year.
The average wind speed in August is 6.8 mph. This value is relatively stable throughout the year.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Duluth in August is 8.3 hours.
Duluth on the Weather Map
| Chicago |  |
-2 |
| Hawaii | |
+78 |
| Honolulu | |
+78 |
| Houston | |
+44 |
| Las Vegas |  |
+40 |
| Los Angeles | |
+52 |
| Maui | |
+72 |
| Miami | |
+72 |
| Miami Beach |  |
+80 |
| New York | |
+20 |
| San Diego | |
+54 |
| San Francisco | |
+46 |
| Sarasota | |
+62 |
| Tampa | |
+62 |
| Washington | |
+28 |
| 0600 |  |
18°F | NE 6 mph |
| 0900 | |
12°F | NE 5 mph |
| 1200 | |
20°F | NE 7 mph |
| 1500 | |
22°F | E 8 mph |
| 1800 | |
22°F | E 9 mph |
| 2100 |  |
16°F | SE 12 mph |
| 0000 | |
12°F | SE 11 mph |
| 0300 | |
8°F | SE 9 mph |