Last updated: June 24, 2025
In September, the average temperature in Thompson, United States is a pleasant 15°C (60°F). However, don't be surprised by the temperature swings, as it can dip to a chilly -3°C (28°F) or soar up to a sweltering 32°C (90°F). Expect some rain, with a total precipitation of 71 mm (2.8 in) over approximately 9 days. With average humidity at a cozy 77%, it’s essential to be prepared for varying weather conditions!
In September in Thompson, the average temperature is 15°C (60°F). Maximums can reach 32°C (90°F) while minimums can dip as low as -3°C (28°F). Be prepared for a wide range of temperatures when traveling during this month.
In Thompson in September, the precipitation amount is 71 mm (2.8 in) spread over 9 days.
In Thompson in September, humidity is 77%. With an average temperature of 15°C (60°F), this humidity feels like you're wading through a warm, heavy blanket, making travel feel more exhausting and sticky than usual.
In Thompson in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Thompson.
UV Risk Categories
Weather in Thompson varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Thompson, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -13°C (10°F) | 18 mm (0.7 inches) | 90% | low |
February Weather | -13°C (8°F) | 20 mm (0.8 inches) | 92% | moderate |
March Weather | -3°C (27°F) | 25 mm (1.0 inches) | 85% | moderate |
April Weather | 4°C (39°F) | 39 mm (1.5 inches) | 81% | high |
May Weather | 13°C (56°F) | 55 mm (2.2 inches) | 75% | very high |
June Weather | 20°C (69°F) | 87 mm (3.4 inches) | 79% | very high |
July Weather | 22°C (72°F) | 58 mm (2.3 inches) | 76% | very high |
August Weather | 20°C (68°F) | 77 mm (3.1 inches) | 78% | very high |
September Weather | 15°C (60°F) | 71 mm (2.8 inches) | 77% | high |
October Weather | 6°C (44°F) | 78 mm (3.1 inches) | 79% | moderate |
November Weather | -3°C (27°F) | 24 mm (1.0 inches) | 86% | moderate |
December Weather | -8°C (17°F) | 38 mm (1.5 inches) | 86% | low |