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September Weather in Capitan, United States

Last updated: June 24, 2025

In September, the average temperature in Capitan, United States is a pleasant 18°C (64°F). However, temperatures can range widely, with a chilly minimum of 1°C (34°F) and a warm maximum of 31°C (88°F). Be prepared for some rain as well, with an average precipitation of 44 mm (1.7 in) spread over 8 days. Don't forget, the average humidity sits at a comfortable 70%, making it an ideal time to explore!

September Temperature in Capitan

In September in Capitan, the average temperature is 18°C (64°F). Maximums can reach 31°C (88°F), and minimums can be as low as 1°C (34°F). Be prepared for a wide range of temperatures, making it essential to pack both warm and light clothing for your travels.

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

The chart illustrates September temperature patterns in Capitan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Capitan, September typically has an average temperature of 18°C (64°F), with highs reaching up to 31°C (88°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec363847556370706864544538
Data source: Temperature data for Capitan 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 Capitan

In Capitan in September, the total precipitation amount is 44 mm (1.7 in) over a duration of 8 days.

September Precipitation Trends in Capitan

The chart displays monthly precipitation patterns in Capitan, 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 Capitan, September typically receives around 44 mm (1.7 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec152324272345849644381415
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Capitan

In Capitan in September humidity is 70%. With an average temperature of 18°C (64°F), this humidity feels like a sticky embrace, making outdoor excursions a bit more cumbersome and requiring frequent breaks to stay refreshed and hydrated.

September Average Humidity in Capitan

This chart illustrates the average monthly humidity levels in Capitan, 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 Capitan is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%79%65%55%54%53%55%58%70%75%83%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Capitan

In Capitan in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Capitan.

Maximum UV Index Levels in Capitan for September

The chart shows the monthly maximum UV Index (UVI) for Capitan 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 Capitan typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5810121213131211865
Data source: Capitan 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 Capitan Compares to Other Months

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

This table compares monthly weather conditions in Capitan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)15 mm (0.6 inches)79%moderate
February Weather4°C (39°F)23 mm (0.9 inches)79%very high
March Weather8°C (47°F)24 mm (0.9 inches)65%very high
April Weather13°C (55°F)27 mm (1.0 inches)55%extreme
May Weather17°C (63°F)23 mm (0.9 inches)54%extreme
June Weather21°C (71°F)45 mm (1.8 inches)53%extreme
July Weather21°C (71°F)84 mm (3.3 inches)55%extreme
August Weather20°C (69°F)96 mm (3.8 inches)57%extreme
September Weather18°C (64°F)44 mm (1.7 inches)70%extreme
October Weather12°C (54°F)38 mm (1.5 inches)75%very high
November Weather7°C (46°F)14 mm (0.6 inches)83%high
December Weather3°C (38°F)15 mm (0.6 inches)82%moderate

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