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September Weather in Laramie, United States

Last updated: June 24, 2025

In Laramie, United States, the average temperature in September hovers around 14°C (57°F), with a striking range from a chilly -7°C (20°F) to a warm 33°C (92°F). Expect light rainfall, with 23 mm (0.9 in) of precipitation spread across 6 days. The air is fairly comfortable, with an average humidity of 63%.

September Temperature in Laramie

In September in Laramie, the average temperature is 14°C (57°F), with maximums potentially reaching 33°C (92°F) and minimums dropping as low as -7°C (20°F). It's a month of diverse weather, so travelers should prepare for a wide range of temperatures.

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

The chart illustrates September temperature patterns in Laramie, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Laramie, September typically has an average temperature of 14°C (57°F), with highs reaching up to 33°C (92°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec212130374660666457393224
Data source: Temperature data for Laramie 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 Laramie

In Laramie in September, the precipitation amount is 23 mm (0.9 in) spread over 6 days.

September Precipitation Trends in Laramie

The chart displays monthly precipitation patterns in Laramie, 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 Laramie, September typically receives around 23 mm (0.9 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec202648457652283523332824
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Laramie

In Laramie in September, humidity is 63%. With an average temperature of 14°C (57°F), this humidity feels like a brisk embrace, making outdoor exploration refreshing yet slightly damp, perfect for leisurely strolls but requiring a light jacket for comfort.

September Average Humidity in Laramie

This chart illustrates the average monthly humidity levels in Laramie, 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 Laramie is approximately 63%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%86%75%67%67%68%62%63%63%72%80%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Laramie

In Laramie 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 Laramie.

Maximum UV Index Levels in Laramie for September

The chart shows the monthly maximum UV Index (UVI) for Laramie 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 Laramie typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469101112121110643
Data source: Laramie 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 Laramie Compares to Other Months

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

This table compares monthly weather conditions in Laramie, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)20 mm (0.8 inches)84%moderate
February Weather-6°C (21°F)26 mm (1.0 inches)85%high
March Weather-1°C (30°F)48 mm (1.9 inches)75%very high
April Weather3°C (37°F)45 mm (1.8 inches)67%very high
May Weather8°C (47°F)76 mm (3.0 inches)67%extreme
June Weather15°C (60°F)52 mm (2.0 inches)68%extreme
July Weather19°C (67°F)28 mm (1.1 inches)62%extreme
August Weather18°C (64°F)35 mm (1.4 inches)63%extreme
September Weather14°C (57°F)23 mm (0.9 inches)63%very high
October Weather4°C (40°F)33 mm (1.3 inches)72%high
November Weather0°C (33°F)28 mm (1.1 inches)79%moderate
December Weather-4°C (25°F)24 mm (0.9 inches)85%moderate

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