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September Weather in Lamar, United States

Last updated: June 24, 2025

In September, the average temperature in Lamar, United States hovers around 22°C (72°F). However, temperatures can vary significantly, with a minimum of 2°C (36°F) and a peak of 39°C (103°F). Expect around 30 mm (1.2 in) of precipitation over approximately 3 days, contributing to an average humidity level of 80%.

September Temperature in Lamar

In September in Lamar, the average temperature is 22°C (72°F). Maximum temperatures can reach 39°C (103°F), while minimums can dip as low as 2°C (36°F). Be prepared for a wide range of temperatures during your travels, from warm days to cool nights.

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

The chart illustrates September temperature patterns in Lamar, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lamar, September typically has an average temperature of 22°C (72°F), with highs reaching up to 39°C (103°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec343547556476807772554537
Data source: Temperature data for Lamar 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 Lamar

In Lamar in September, the precipitation amount is 30 mm (1.2 in) over the course of 3 days.

September Precipitation Trends in Lamar

The chart displays monthly precipitation patterns in Lamar, 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 Lamar, September typically receives around 30 mm (1.2 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec17152736663849493025911
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lamar

In Lamar in September humidity is 80%. With an average temperature of 22°C (72°F), this humidity feels like a warm, enveloping blanket that can quickly sap your energy while traveling, making you feel sticky and uncomfortable if you're not prepared.

September Average Humidity in Lamar

This chart illustrates the average monthly humidity levels in Lamar, 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 Lamar 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 Lamar

In Lamar 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 Lamar.

Maximum UV Index Levels in Lamar for September

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

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

This table compares monthly weather conditions in Lamar, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)16 mm (0.6 inches)73%moderate
February Weather2°C (35°F)15 mm (0.6 inches)76%moderate
March Weather8°C (48°F)27 mm (1.1 inches)64%very high
April Weather13°C (55°F)36 mm (1.4 inches)61%very high
May Weather18°C (64°F)66 mm (2.6 inches)71%extreme
June Weather25°C (77°F)38 mm (1.5 inches)75%extreme
July Weather27°C (80°F)49 mm (1.9 inches)75%extreme
August Weather25°C (77°F)49 mm (1.9 inches)80%extreme
September Weather22°C (72°F)30 mm (1.2 inches)80%very high
October Weather13°C (55°F)25 mm (1.0 inches)78%high
November Weather7°C (45°F)9 mm (0.4 inches)76%moderate
December Weather3°C (37°F)11 mm (0.4 inches)78%moderate

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