Last updated: June 24, 2025
In Mountain Lake, United States, the average temperature in September hovers around 18°C (65°F). Expect a range of temperatures, with a minimum dipping to 2°C (36°F) and a maximum soaring to 33°C (91°F). During this month, you can anticipate 124 mm (4.9 in) of precipitation over 9 days, accompanied by an average humidity level of 75%. Prepare for a mix of weather as you explore this vibrant locale!
In September in Mountain Lake, the average temperature is 18°C (65°F), with maximums reaching 33°C (91°F) and minimums dropping as low as 2°C (36°F). This makes Mountain Lake an ideal destination for travelers seeking a mix of comfortable days and cooler evenings.
In Mountain Lake in September, the precipitation amount is 124 mm (4.9 in) over the course of 9 days.
In Mountain Lake in September, humidity is 75%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket that can make outdoor exploration feel a bit stifling, potentially leading to discomfort during travel activities.
In Mountain 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 Mountain Lake.
UV Risk Categories
Weather in Mountain Lake varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Mountain Lake, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (17°F) | 31 mm (1.2 inches) | 80% | moderate |
| February Weather | -9°C (17°F) | 30 mm (1.2 inches) | 84% | moderate |
| March Weather | 1°C (34°F) | 68 mm (2.7 inches) | 75% | high |
| April Weather | 6°C (44°F) | 90 mm (3.6 inches) | 79% | very high |
| May Weather | 15°C (59°F) | 134 mm (5.3 inches) | 74% | very high |
| June Weather | 22°C (72°F) | 123 mm (4.8 inches) | 81% | very high |
| July Weather | 23°C (74°F) | 123 mm (4.9 inches) | 82% | very high |
| August Weather | 21°C (71°F) | 121 mm (4.8 inches) | 80% | very high |
| September Weather | 18°C (65°F) | 124 mm (4.9 inches) | 75% | very high |
| October Weather | 9°C (48°F) | 96 mm (3.8 inches) | 77% | moderate |
| November Weather | 1°C (34°F) | 33 mm (1.3 inches) | 85% | moderate |
| December Weather | -4°C (25°F) | 42 mm (1.7 inches) | 83% | low |