Average temperature in May is 10.4 °C
Average daytime temperature is 14.5 °C
Average night temperature is 7 °C
Absolute maximum temperature: 23.5 °C
Absolute minimum temperature: -1.4 °C
Number of sunny days: 21
Number of rainy days: 10
Number of snow days:
Precipitation sum: 21 mm
* Weather data for Grand Marais United States is based on climate observations for 2023 year
| May (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 4.4 | 6.7 | 6.4 | 8 | 8.1 | 10.8 | 9.2 | 12.8 | 12.5 | 15.1 | 19.4 | 18.1 | 16.4 | 12.9 | 18.7 | 18.4 | 7.7 | 14.1 | 15.8 | 19.9 | 16.4 | 13.7 | 19.5 | 11.5 | 12.2 | 18.6 | 19 | 19.9 | 20 | 21.1 | 23.5 |
| Apparent max temperature | -2.3 | 2.6 | 3.6 | 3.8 | 3.1 | 6.7 | 4.7 | 9.6 | 11.7 | 16.1 | 20.4 | 17.8 | 13.2 | 10.7 | 18.6 | 15.8 | 4.6 | 13.8 | 12.6 | 19.4 | 14.7 | 13.1 | 23.9 | 8.4 | 10.7 | 17.1 | 18.4 | 21.9 | 20.2 | 23.3 | 27.5 |
| Mean temperature | 3.1 | 3.8 | 2.4 | 4.6 | 6.7 | 7 | 7.6 | 9.1 | 10 | 11.1 | 13.7 | 15.1 | 12.9 | 10.6 | 12.4 | 12.9 | 5.4 | 8 | 9.6 | 13.1 | 12.1 | 10.4 | 14.2 | 7.1 | 7.4 | 12.2 | 14.6 | 16 | 15.2 | 15.8 | 18.2 |
| Apparent mean temperature | -6 | -7.1 | -5.1 | -3.2 | -0.4 | -0.3 | 1.6 | 2 | 4.1 | 5.7 | 8.6 | 9.4 | 4.9 | 3.4 | 3.4 | 4.8 | -1.7 | -0.8 | 2.7 | 4.2 | 5.4 | 2.9 | 8.2 | -0.1 | -0.8 | 4.8 | 8.6 | 9.7 | 9 | 10.1 | 11.3 |
| Minimum temperature | 2 | 0.9 | -1.4 | 2.1 | 5 | 4.7 | 6.2 | 6.7 | 7.3 | 7.5 | 9.9 | 11.5 | 10.1 | 8.1 | 7.3 | 7.3 | 2.7 | 3.9 | 7.8 | 7.3 | 8.5 | 7.7 | 10.1 | 4.9 | 4 | 7.5 | 11.7 | 11.8 | 10.7 | 11.6 | 13.1 |
| Apparent min temperature | -4.6 | -3.3 | -0.5 | -0.2 | 1.3 | 2.3 | 3.2 | 4.7 | 7.2 | 10.3 | 13.2 | 13.4 | 9 | 7.1 | 10 | 9.8 | 2.1 | 5.5 | 6.2 | 10.3 | 8.9 | 7.2 | 13.5 | 2.8 | 3.8 | 9.8 | 13 | 15.6 | 14.1 | 15.1 | 19 |
| May | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 14.5 | 14.5 | 14.6 | 14.6 | 14.7 | 14.7 | 14.8 | 14.8 | 14.9 | 14.9 | 15 | 15 | 15.1 | 15.1 | 15.1 | 15.2 | 15.2 | 15.3 | 15.3 | 15.3 | 15.4 | 15.4 | 15.5 | 15.5 | 15.5 | 15.6 | 15.6 | 15.6 | 15.7 | 15.7 | 15.7 |
| Sunshine duration (h) | 3.5 | 4.6 | 2.6 | 12.8 | 12.2 | 8.9 | 2.9 | 13.4 | 13.8 | 13.1 | 13.9 | 13.9 | 13.9 | 11.6 | 14 | 14 | 14 | 11.3 | 7.1 | 14 | 14 | 14 | 14 | 10.8 | 12.1 | 14.1 | 14.2 | 14.2 | 13.8 | 13.9 | 14.1 |
| Precipitation (mm) | 0.6 | 0.2 | 0 | 0.3 | 0 | 0.1 | 0.6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.3 | 7.6 | 0 | 0 | 0 | 1.7 | 9.3 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 |
| Precipitation hours | 5 | 2 | 0 | 2 | 0 | 1 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 14 | 0 | 0 | 0 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Wind speed (m/s) | 44.3 | 39.7 | 10 | 26.8 | 29 | 26.6 | 26.7 | 28.8 | 18.3 | 8.4 | 11.8 | 23.2 | 24.7 | 17.6 | 17.2 | 23.6 | 16.4 | 17.3 | 33.9 | 25.2 | 22.7 | 18 | 21.6 | 22.1 | 17.1 | 14.4 | 13.4 | 7.1 | 8.7 | 10.8 | 11.3 |
In May 2023, the highest daytime temperature in Grand Marais was 23.5°C.
While the minimum temperature at night dropped to -1.4°C.
The average nighttime and daytime temperatures during May in Grand Marais are 7°C and 14.5°C respectively.
The precipitation sum in May is about 21 mm.