Last updated: June 24, 2025
In September, the average temperature in Chevy Chase Heights, United States hovers around 19°C (66°F), with a minimum dipping to 3°C (38°F) and a maximum soaring to 32°C (90°F). Expect some rain, as 123 mm (4.9 in) of precipitation typically falls over 10 days. The average humidity during this month is a comfortable 67%, making it a pleasant time to explore!
In September in Chevy Chase Heights, the average temperature is 19°C (66°F), with maximums reaching up to 32°C (90°F) and minimums dropping as low as 3°C (38°F). This diverse range of temperatures makes it essential for travelers to pack accordingly for both warm days and cool evenings.
In Chevy Chase Heights in September, the total precipitation amount is 123 mm (4.9 in) over the course of 10 days.
In Chevy Chase Heights in September humidity is 67%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace that envelops you as you travel, making each step a little heavier but still comfortable enough to explore the vibrant surroundings.
In Chevy Chase Heights 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 Chevy Chase Heights.
UV Risk Categories
Weather in Chevy Chase Heights varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Chevy Chase Heights, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (30°F) | 97 mm (3.8 inches) | 89% | moderate |
| February Weather | 1°C (34°F) | 127 mm (5.0 inches) | 90% | moderate |
| March Weather | 4°C (40°F) | 108 mm (4.3 inches) | 89% | high |
| April Weather | 10°C (50°F) | 132 mm (5.2 inches) | 88% | very high |
| May Weather | 16°C (61°F) | 158 mm (6.2 inches) | 80% | very high |
| June Weather | 20°C (69°F) | 131 mm (5.2 inches) | 79% | very high |
| July Weather | 23°C (74°F) | 136 mm (5.3 inches) | 74% | very high |
| August Weather | 22°C (72°F) | 92 mm (3.6 inches) | 64% | very high |
| September Weather | 19°C (66°F) | 123 mm (4.9 inches) | 67% | very high |
| October Weather | 13°C (56°F) | 121 mm (4.7 inches) | 81% | high |
| November Weather | 5°C (41°F) | 96 mm (3.8 inches) | 89% | moderate |
| December Weather | 2°C (35°F) | 106 mm (4.2 inches) | 88% | low |