Last updated: June 24, 2025
In September, the average temperature in Manitou Beach-Devils Lake, United States is a pleasant 19°C (66°F). Expect swings in temperature, with a minimum dipping to 2°C (37°F) and a maximum reaching up to 33°C (91°F). This month brings about 63 mm (2.5 in) of precipitation over 8 days, contributing to a high average humidity of 78%. Prepare for a mix of warmth and moisture during your stay!
In September in Manitou Beach-Devils Lake, the average temperature is 19°C (66°F). The maximum can reach 33°C (91°F) and the minimum can be as low as 2°C (37°F). This varying climate makes Manitou Beach-Devils Lake a versatile destination for travelers seeking both warm and cool experiences.
In Manitou Beach-Devils Lake in September, the precipitation amount is 63 mm (2.5 in) spread over 8 days.
In Manitou Beach-Devils Lake in September, humidity is 78%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making traveling quite uncomfortable unless you're well-prepared with lightweight, breathable clothing and frequent breaks to stay hydrated.
In Manitou Beach-Devils Lake in September, 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 Manitou Beach-Devils Lake.
UV Risk Categories
Weather in Manitou Beach-Devils Lake varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Manitou Beach-Devils Lake, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 68 mm (2.7 inches) | 88% | moderate |
| February Weather | -2°C (28°F) | 69 mm (2.7 inches) | 87% | moderate |
| March Weather | 3°C (38°F) | 85 mm (3.3 inches) | 87% | moderate |
| April Weather | 8°C (47°F) | 93 mm (3.7 inches) | 87% | very high |
| May Weather | 15°C (60°F) | 133 mm (5.3 inches) | 81% | very high |
| June Weather | 21°C (70°F) | 92 mm (3.6 inches) | 82% | very high |
| July Weather | 24°C (75°F) | 112 mm (4.4 inches) | 81% | very high |
| August Weather | 22°C (72°F) | 71 mm (2.8 inches) | 78% | very high |
| September Weather | 19°C (66°F) | 63 mm (2.5 inches) | 78% | very high |
| October Weather | 12°C (54°F) | 110 mm (4.3 inches) | 82% | high |
| November Weather | 4°C (39°F) | 82 mm (3.2 inches) | 89% | moderate |
| December Weather | 0°C (33°F) | 55 mm (2.2 inches) | 86% | low |