September Weather in Phillipsburg, United States

Last updated: June 24, 2025

In September, the average temperature in Phillipsburg, United States hovers around 22°C (71°F). Expect a range that swings from a chilly 4°C (40°F) at night to a scorching 37°C (99°F) during the day. With an average precipitation of 65 mm (2.5 in) over about 5 days, the air remains comfortably lush, with an average humidity of 73% adding to the vibrant atmosphere.

September Temperature in Phillipsburg

In September in Phillipsburg, the average temperature is 22°C (71°F). Maximums can reach 37°C (99°F), and minimums can drop as low as 4°C (40°F). This diverse temperature range makes Phillipsburg an ideal destination for travelers seeking both warm days and cooler evenings.

September Weather in Phillipsburg: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Phillipsburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Phillipsburg, September typically has an average temperature of 22°C (71°F), with highs reaching up to 37°C (99°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec292943526377807671544334
Data source: Temperature data for Phillipsburg generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Phillipsburg

In Phillipsburg in September, the total precipitation amount is 65 mm (2.5 in) over the course of 5 days.

September Precipitation Trends in Phillipsburg

The chart displays monthly precipitation patterns in Phillipsburg, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Phillipsburg, September typically receives around 65 mm (2.5 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec2419733916660739265621834
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Phillipsburg

In Phillipsburg in September, humidity is 73%. With an average temperature of 22°C (71°F), this humidity feels like a warm blanket enveloping you, making outdoor activities somewhat sticky but still enjoyable for exploring the sights.

September Average Humidity in Phillipsburg

This chart illustrates the average monthly humidity levels in Phillipsburg, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Phillipsburg is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%78%67%70%82%81%80%80%74%71%79%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Phillipsburg

In Phillipsburg 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 Phillipsburg.

Maximum UV Index Levels in Phillipsburg for September

The chart shows the monthly maximum UV Index (UVI) for Phillipsburg in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Phillipsburg typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
Data source: Phillipsburg September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Phillipsburg Compares to Other Months

Weather in Phillipsburg varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Phillipsburg, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Phillipsburg, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)24 mm (0.9 inches)74%moderate
February Weather-2°C (30°F)19 mm (0.8 inches)78%moderate
March Weather6°C (44°F)73 mm (2.9 inches)67%high
April Weather11°C (52°F)39 mm (1.5 inches)70%very high
May Weather17°C (63°F)166 mm (6.5 inches)82%very high
June Weather25°C (77°F)60 mm (2.4 inches)81%extreme
July Weather27°C (80°F)73 mm (2.9 inches)80%extreme
August Weather25°C (77°F)92 mm (3.6 inches)80%very high
September Weather22°C (71°F)65 mm (2.5 inches)73%very high
October Weather12°C (54°F)62 mm (2.4 inches)71%high
November Weather6°C (43°F)18 mm (0.7 inches)79%moderate
December Weather1°C (34°F)34 mm (1.4 inches)83%moderate

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