Last updated: June 24, 2025
In August, the average temperature in Grand Forks, United States is a pleasant 20°C (68°F). However, be prepared for some variability, as temperatures can range from a brisk 6°C (44°F) to a scorching 36°C (96°F). Visitors can expect about 76 mm (3.0 in) of precipitation over 8 days, contributing to an average humidity level of 78%.
In August in Grand Forks, the average temperature is 20°C (68°F). Maximums can reach 36°C (96°F), and minimums can be as low as 6°C (44°F). This makes Grand Forks an ideal destination for travelers seeking a comfortable climate with a range of temperatures to suit diverse activities.
In Grand Forks in August, the precipitation amount is 76 mm (3.0 in) spread over a duration of 8 days.
In Grand Forks in August humidity is 78%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that makes exploring the sights a bit sticky, so travelers should stay hydrated and take frequent breaks in the shade.
In Grand Forks in August, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Grand Forks.
UV Risk Categories
Weather in Grand Forks varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Grand Forks, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -13°C (9°F) | 18 mm (0.7 inches) | 90% | low |
| February Weather | -14°C (8°F) | 20 mm (0.8 inches) | 92% | moderate |
| March Weather | -3°C (26°F) | 24 mm (1.0 inches) | 85% | moderate |
| April Weather | 4°C (39°F) | 35 mm (1.4 inches) | 81% | high |
| May Weather | 13°C (56°F) | 55 mm (2.2 inches) | 75% | very high |
| June Weather | 20°C (69°F) | 83 mm (3.3 inches) | 79% | very high |
| July Weather | 22°C (72°F) | 59 mm (2.3 inches) | 76% | very high |
| August Weather | 20°C (68°F) | 76 mm (3.0 inches) | 78% | very high |
| September Weather | 15°C (60°F) | 73 mm (2.9 inches) | 77% | high |
| October Weather | 6°C (44°F) | 80 mm (3.1 inches) | 79% | moderate |
| November Weather | -3°C (27°F) | 26 mm (1.0 inches) | 86% | low |
| December Weather | -9°C (17°F) | 36 mm (1.4 inches) | 86% | low |