September Weather in Los Alamos, Mexico

Last updated: August 27, 2025

In Los Alamos, Mexico, the average temperature in September hovers around 27°C (82°F). This warm climate experiences a range of temperatures, with minimums dipping to 13°C (55°F) and maximums soaring up to 41°C (106°F). During this month, expect 110 mm (4.3 in) of precipitation spread over 10 days, along with an average humidity of 68%.

September Temperature in Los Alamos

In September in Los Alamos, the average temperature is 27°C (82°F). Maximum temperatures can reach 41°C (106°F), while minimums can drop as low as 13°C (55°F). Be prepared for a wide range of temperatures and pack accordingly for your travels!

September Weather in Los Alamos: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Los Alamos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Los Alamos, September typically has an average temperature of 27°C (82°F), with highs reaching up to 41°C (106°F) and lows dropping to around 13°C (55°F).

Data source: Temperature data for Los Alamos generated using information from the Copernicus Climate Change Service.

September Precipitation in Los Alamos

In Los Alamos in September, the precipitation amount is 110 mm (4.3 in) over a period of 10 days.

September Precipitation Trends in Los Alamos

The chart displays monthly precipitation patterns in Los Alamos, 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 Los Alamos, September typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Los Alamos

In Los Alamos in September, humidity is 68%. With an average temperature of 27°C (82°F), this humidity feels like a warm, sticky embrace that can make exploring the area a bit uncomfortable. Travelers may find themselves sweating more than usual, so staying hydrated and taking breaks in shaded areas will be essential for a pleasant experience.

September Average Humidity in Los Alamos

This chart illustrates the average monthly humidity levels in Los Alamos, 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 Los Alamos is approximately 68%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Los Alamos

In Los Alamos 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 Los Alamos.

Maximum UV Index Levels in Los Alamos for September

The chart shows the monthly maximum UV Index (UVI) for Los Alamos 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 Los Alamos typically reaches 11, which falls under the extreme exposure category.

Data source: Los Alamos 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 Los Alamos Compares to Other Months

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

This table compares monthly weather conditions in Los Alamos, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (55°F)	12 mm (0.5 inches)	76%	high
February Weather	15°C (60°F)	13 mm (0.5 inches)	75%	very high
March Weather	20°C (69°F)	19 mm (0.7 inches)	70%	very high
April Weather	24°C (75°F)	30 mm (1.2 inches)	73%	extreme
May Weather	27°C (81°F)	96 mm (3.8 inches)	79%	extreme
June Weather	29°C (85°F)	42 mm (1.6 inches)	78%	extreme
July Weather	30°C (87°F)	54 mm (2.1 inches)	65%	extreme
August Weather	31°C (87°F)	36 mm (1.4 inches)	55%	extreme
September Weather	27°C (82°F)	110 mm (4.3 inches)	68%	extreme
October Weather	23°C (73°F)	54 mm (2.1 inches)	77%	very high
November Weather	17°C (63°F)	16 mm (0.6 inches)	84%	high
December Weather	14°C (58°F)	17 mm (0.7 inches)	87%	moderate