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September Weather in Underwood, United States

Last updated: June 24, 2025

In Underwood, United States, the average temperature in September hovers around 20°C (69°F). Expect a minimum of 4°C (39°F) and a maximum that can reach up to 35°C (96°F). During this period, precipitation amounts to approximately 82 mm (3.2 in) over 9 days, while the average humidity remains high at 75%.

September Temperature in Underwood

In September in Underwood, the average temperature is 20°C (69°F). The maximum can reach 35°C (96°F), and the minimum can be as low as 4°C (39°F). This range of temperatures makes it a great time for travelers to enjoy a mix of warm days and cool evenings.

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

The chart illustrates September temperature patterns in Underwood, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Underwood, September typically has an average temperature of 20°C (69°F), with highs reaching up to 35°C (96°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec242540506275777469523930
Data source: Temperature data for Underwood 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 Underwood

In Underwood in September, the total precipitation amount is 82 mm (3.2 in), occurring over a span of 9 days.

September Precipitation Trends in Underwood

The chart displays monthly precipitation patterns in Underwood, 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 Underwood, September typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec3134886015712666109821193238
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Underwood

In Underwood in September, humidity is 75%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping blanket, making travel a bit muggy and requiring frequent hydration breaks to stay comfortable while exploring.

September Average Humidity in Underwood

This chart illustrates the average monthly humidity levels in Underwood, 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 Underwood is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%73%75%78%82%83%81%75%75%82%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Underwood

In Underwood 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 Underwood.

Maximum UV Index Levels in Underwood for September

The chart shows the monthly maximum UV Index (UVI) for Underwood 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 Underwood typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Underwood 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 Underwood Compares to Other Months

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

This table compares monthly weather conditions in Underwood, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (24°F)31 mm (1.2 inches)76%moderate
February Weather-4°C (25°F)34 mm (1.3 inches)80%moderate
March Weather5°C (41°F)88 mm (3.5 inches)73%high
April Weather10°C (50°F)60 mm (2.4 inches)74%very high
May Weather17°C (62°F)157 mm (6.2 inches)78%very high
June Weather24°C (75°F)126 mm (5.0 inches)82%very high
July Weather25°C (78°F)66 mm (2.6 inches)83%very high
August Weather23°C (74°F)109 mm (4.3 inches)80%very high
September Weather20°C (69°F)82 mm (3.2 inches)75%very high
October Weather11°C (52°F)119 mm (4.7 inches)75%high
November Weather4°C (39°F)32 mm (1.3 inches)82%moderate
December Weather-1°C (31°F)38 mm (1.5 inches)83%low

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