Last updated: June 24, 2025
In September, the average temperature in West Norriton, United States hovers around 21°C (69°F). Expect fluctuations, with temperatures dipping to a cool 5°C (41°F) and soaring up to a sizzling 34°C (94°F). During this time, anticipate about 100 mm (4.0 in) of precipitation spread over 9 days, contributing to an average humidity of 66%.
In September in West Norriton, the average temperature is 21°C (69°F), with maximums reaching 34°C (94°F) and minimums dropping as low as 5°C (41°F). This makes it a great time for travelers to enjoy a variety of outdoor activities while being prepared for some temperature fluctuations.
In West Norriton in September, the precipitation amount is 100 mm (4.0 in) over the course of 9 days.
In West Norriton in September humidity is 66%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace, making it a bit sticky, but still comfortable for traveling as long as you stay hydrated and take breaks in the shade.
In West Norriton 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 West Norriton.
UV Risk Categories
Weather in West Norriton varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in West Norriton, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 67 mm (2.7 inches) | 87% | moderate |
| February Weather | 3°C (37°F) | 106 mm (4.2 inches) | 85% | moderate |
| March Weather | 6°C (43°F) | 105 mm (4.1 inches) | 85% | high |
| April Weather | 12°C (53°F) | 104 mm (4.1 inches) | 83% | very high |
| May Weather | 17°C (63°F) | 144 mm (5.7 inches) | 75% | very high |
| June Weather | 22°C (72°F) | 111 mm (4.4 inches) | 73% | very high |
| July Weather | 25°C (78°F) | 147 mm (5.8 inches) | 65% | very high |
| August Weather | 24°C (75°F) | 163 mm (6.4 inches) | 62% | very high |
| September Weather | 21°C (69°F) | 100 mm (4.0 inches) | 66% | very high |
| October Weather | 15°C (60°F) | 102 mm (4.0 inches) | 79% | high |
| November Weather | 7°C (45°F) | 86 mm (3.4 inches) | 87% | moderate |
| December Weather | 3°C (38°F) | 101 mm (4.0 inches) | 85% | low |