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September Weather in La Mesilla, United States

Last updated: June 24, 2025

In La Mesilla, United States, the average temperature in September hovers around 18°C (65°F). Expect a range with minimums dipping to 2°C (35°F) and maximums soaring to 33°C (92°F). With an average humidity of 72%, be prepared for a pleasantly humid atmosphere. Additionally, you can expect about 27 mm (1.0 in) of precipitation spread over 3 days.

September Temperature in La Mesilla

In September in La Mesilla, the average temperature is 18°C (65°F). The maximum can reach 33°C (92°F), while the minimum can drop as low as 2°C (35°F). This diverse climate makes La Mesilla a great destination for travelers seeking both warmth and cool, refreshing conditions.

September Weather in La Mesilla: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in La Mesilla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Mesilla, September typically has an average temperature of 18°C (65°F), with highs reaching up to 33°C (92°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec293242516070727165524132
Data source: Temperature data for La Mesilla 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 La Mesilla

In La Mesilla in September, the precipitation amount is 27 mm (1.0 in) over the course of 3 days.

September Precipitation Trends in La Mesilla

The chart displays monthly precipitation patterns in La Mesilla, 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 La Mesilla, September typically receives around 27 mm (1.0 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec242424231815342427272319
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in La Mesilla

In La Mesilla in September humidity is 72%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace, making traveling somewhat uncomfortable as the air clings to your skin and the heat can be stifling, yet it's perfect for enjoying leisurely strolls under the shade.

September Average Humidity in La Mesilla

This chart illustrates the average monthly humidity levels in La Mesilla, 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 La Mesilla is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%79%66%60%57%55%57%65%72%78%81%79%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in La Mesilla

In La Mesilla 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 La Mesilla.

Maximum UV Index Levels in La Mesilla for September

The chart shows the monthly maximum UV Index (UVI) for La Mesilla 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 La Mesilla typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5810111213131211864
Data source: La Mesilla 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 La Mesilla Compares to Other Months

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

This table compares monthly weather conditions in La Mesilla, 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)78%moderate
February Weather0°C (33°F)24 mm (0.9 inches)79%very high
March Weather6°C (43°F)24 mm (1.0 inches)66%very high
April Weather11°C (51°F)22 mm (0.9 inches)60%extreme
May Weather16°C (60°F)18 mm (0.7 inches)57%extreme
June Weather21°C (70°F)15 mm (0.6 inches)55%extreme
July Weather22°C (73°F)34 mm (1.3 inches)56%extreme
August Weather21°C (71°F)23 mm (0.9 inches)65%extreme
September Weather18°C (65°F)27 mm (1.0 inches)72%extreme
October Weather11°C (52°F)27 mm (1.1 inches)78%very high
November Weather5°C (41°F)23 mm (0.9 inches)81%high
December Weather0°C (32°F)19 mm (0.7 inches)79%moderate

Compare La Mesilla's Climate with Cities Worldwide