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September Weather in La Junta, United States

Last updated: June 24, 2025

In September, the average temperature in La Junta, United States hovers around 23°C (74°F). However, be prepared for a range, as temperatures can dip to a chilly 1°C (35°F) or soar to a sweltering 40°C (104°F). While you're enjoying the warmth, expect around 20 mm (0.8 in) of precipitation over 3 days, and remember that the average humidity levels sit at a notable 80%.

September Temperature in La Junta

In September in La Junta, the average temperature is 23°C (74°F). Maximum temperatures can reach 40°C (104°F), while the minimum can drop as low as 1°C (35°F). This wide temperature range makes it essential for travelers to prepare for both warm days and cooler nights.

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

The chart illustrates September temperature patterns in La Junta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Junta, September typically has an average temperature of 23°C (74°F), with highs reaching up to 40°C (104°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec353748556578817973554537
Data source: Temperature data for La Junta 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 Junta

In La Junta in September, the precipitation amount is 20 mm (0.8 in) accumulated over a period of 3 days.

September Precipitation Trends in La Junta

The chart displays monthly precipitation patterns in La Junta, 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 Junta, September typically receives around 20 mm (0.8 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec1713263158225136202498
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in La Junta

In La Junta in September humidity is 80%. With an average temperature of 23°C (74°F), this humidity feels like walking through a warm, damp blanket, making travel feel sticky and muggy, where every step leaves you yearning for a cool breeze.

September Average Humidity in La Junta

This chart illustrates the average monthly humidity levels in La Junta, 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 Junta is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%76%64%61%71%75%75%80%80%78%76%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in La Junta

In La Junta in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in La Junta.

Maximum UV Index Levels in La Junta for September

The chart shows the monthly maximum UV Index (UVI) for La Junta 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 Junta typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458101112121110753
Data source: La Junta 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 Junta Compares to Other Months

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

This table compares monthly weather conditions in La Junta, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)17 mm (0.7 inches)73%moderate
February Weather3°C (37°F)13 mm (0.5 inches)76%moderate
March Weather9°C (49°F)26 mm (1.0 inches)64%very high
April Weather13°C (56°F)31 mm (1.2 inches)61%very high
May Weather18°C (65°F)58 mm (2.3 inches)71%extreme
June Weather25°C (78°F)22 mm (0.9 inches)75%extreme
July Weather27°C (81°F)51 mm (2.0 inches)75%extreme
August Weather26°C (79°F)36 mm (1.4 inches)80%extreme
September Weather23°C (74°F)20 mm (0.8 inches)80%very high
October Weather13°C (55°F)24 mm (0.9 inches)78%high
November Weather7°C (46°F)9 mm (0.4 inches)76%moderate
December Weather3°C (38°F)8 mm (0.3 inches)78%moderate

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