Last updated: June 18, 2025
In September, the average temperature in Walnut Grove, Canada hovers around 15°C (59°F), with a minimum reaching 6°C (43°F) and a maximum soaring to 33°C (91°F). Expect 231 mm (9.1 in) of precipitation over 15 days, contributing to a notably high average humidity of 76%. Remember to pack accordingly for the variable weather!
In September in Walnut Grove, the average temperature is 15°C (59°F). Maximums can reach 33°C (91°F), while minimums can drop as low as 6°C (43°F). Be prepared for a range of weather conditions when traveling during this time.
In Walnut Grove in September, the precipitation amount is 231 mm (9.1 in) over a span of 15 days.
In Walnut Grove in September humidity is 76%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities less enjoyable and often leading to a quick sense of fatigue while traveling.
In Walnut Grove in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Walnut Grove, you can refer to this Hourly UV Index in Walnut Grove.
UV Risk Categories
Weather in Walnut Grove varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Walnut Grove, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (37°F) | 338 mm (13.3 inches) | 86% | low |
| February Weather | 2°C (36°F) | 226 mm (8.9 inches) | 85% | moderate |
| March Weather | 5°C (42°F) | 242 mm (9.5 inches) | 86% | moderate |
| April Weather | 8°C (47°F) | 196 mm (7.7 inches) | 86% | high |
| May Weather | 12°C (55°F) | 110 mm (4.3 inches) | 81% | high |
| June Weather | 15°C (59°F) | 108 mm (4.3 inches) | 83% | very high |
| July Weather | 18°C (64°F) | 52 mm (2.1 inches) | 84% | very high |
| August Weather | 18°C (65°F) | 49 mm (1.9 inches) | 77% | very high |
| September Weather | 15°C (59°F) | 231 mm (9.1 inches) | 76% | high |
| October Weather | 9°C (49°F) | 308 mm (12.1 inches) | 88% | moderate |
| November Weather | 6°C (43°F) | 440 mm (17.3 inches) | 87% | low |
| December Weather | 3°C (37°F) | 347 mm (13.7 inches) | 87% | low |