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September Weather in Mullen, United States

Last updated: June 24, 2025

In September, the average temperature in Mullen, United States hovers around 18°C (65°F). Daily extremes can range from a chilly 1°C (34°F) to a sweltering 36°C (97°F). With 54 mm (2.1 in) of precipitation expected over 6 days, prepare for a mix of sun and occasional showers. The average humidity stands at a comfortable 70%, adding to the region's unique climate.

September Temperature in Mullen

In September in Mullen, the average temperature is 18°C (65°F). Maximums can reach 36°C (97°F), and minimums can be as low as 1°C (34°F). This variation in temperature makes it essential to pack accordingly for your travels.

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

The chart illustrates September temperature patterns in Mullen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mullen, September typically has an average temperature of 18°C (65°F), with highs reaching up to 36°C (97°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec272437455670757165473830
Data source: Temperature data for Mullen 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 Mullen

In Mullen in September, the total precipitation amount is 54 mm (2.1 in) over the course of 6 days.

September Precipitation Trends in Mullen

The chart displays monthly precipitation patterns in Mullen, 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 Mullen, September typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec1624655212964667554472227
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mullen

In Mullen in September humidity is 70%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making it quite comfortable for traveling, though it can leave you feeling slightly sticky if you're on the move for too long.

September Average Humidity in Mullen

This chart illustrates the average monthly humidity levels in Mullen, 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 Mullen is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%80%64%64%76%79%77%79%70%64%75%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mullen

In Mullen in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Mullen.

Maximum UV Index Levels in Mullen for September

The chart shows the monthly maximum UV Index (UVI) for Mullen 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 Mullen typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568101111109643
Data source: Mullen 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 Mullen Compares to Other Months

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

This table compares monthly weather conditions in Mullen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)16 mm (0.6 inches)73%moderate
February Weather-5°C (24°F)24 mm (1.0 inches)80%moderate
March Weather3°C (38°F)65 mm (2.6 inches)64%high
April Weather7°C (45°F)52 mm (2.1 inches)64%very high
May Weather13°C (57°F)129 mm (5.1 inches)76%very high
June Weather21°C (71°F)64 mm (2.5 inches)79%extreme
July Weather24°C (75°F)66 mm (2.6 inches)77%extreme
August Weather22°C (72°F)75 mm (2.9 inches)79%very high
September Weather18°C (65°F)54 mm (2.1 inches)70%very high
October Weather8°C (47°F)47 mm (1.8 inches)64%high
November Weather3°C (38°F)22 mm (0.8 inches)75%moderate
December Weather-1°C (30°F)27 mm (1.1 inches)78%moderate

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