Last updated: June 24, 2025
In September, the average temperature in West Menlo Park, United States is a pleasant 18°C (66°F), making it an ideal time to explore the area. Expect temperatures to range from a cool 10°C (50°F) to a warm 39°C (103°F). With only 2 mm (0.1 in) of precipitation over 0 days, you'll likely enjoy clear skies. The average humidity sits at a comfortable 55%, ensuring a delightful atmosphere for any outdoor activities.
In September in West Menlo Park, the average temperature is 18°C (66°F), with maximums reaching up to 39°C (103°F) and minimums dropping as low as 10°C (50°F). Be prepared for warm days and cooler nights when planning your travel to West Menlo Park.
In West Menlo Park in September, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.
In West Menlo Park in September humidity is 55%. With an average temperature of 18°C (66°F), this humidity feels like a refreshing embrace, making for comfortable travels as long as you stay hydrated and enjoy the mild weather.
In West Menlo Park in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in West Menlo Park.
UV Risk Categories
Weather in West Menlo Park varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in West Menlo Park, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 11°C (52°F) | 105 mm (4.1 inches) | 82% | moderate |
February Weather | 11°C (53°F) | 100 mm (3.9 inches) | 84% | moderate |
March Weather | 12°C (54°F) | 86 mm (3.4 inches) | 82% | very high |
April Weather | 13°C (57°F) | 33 mm (1.3 inches) | 78% | very high |
May Weather | 15°C (59°F) | 24 mm (0.9 inches) | 71% | very high |
June Weather | 17°C (63°F) | 2 mm (0.1 inches) | 64% | extreme |
July Weather | 17°C (63°F) | 0 mm (0.0 inches) | 58% | extreme |
August Weather | 18°C (65°F) | 0 mm (0.0 inches) | 54% | very high |
September Weather | 18°C (66°F) | 2 mm (0.1 inches) | 55% | very high |
October Weather | 17°C (63°F) | 24 mm (0.9 inches) | 62% | high |
November Weather | 13°C (56°F) | 47 mm (1.9 inches) | 78% | moderate |
December Weather | 11°C (52°F) | 88 mm (3.5 inches) | 80% | moderate |