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September Weather in Inverness, United States

Last updated: June 24, 2025

In Inverness, United States, the average temperature in September is a pleasant 25°C (78°F). However, visitors should be prepared for fluctuations, as temperatures can drop as low as 12°C (53°F) and soar to a sweltering 37°C (98°F). During this month, expect about 113 mm (4.4 in) of precipitation over approximately 11 days, which contributes to an average humidity level of 79%. Make sure to pack accordingly for a comfortable visit!

September Temperature in Inverness

In September in Inverness, the average temperature is 25°C (78°F). Maximums can reach 37°C (98°F), and minimums can be as low as 12°C (53°F). It's a perfect time to enjoy outdoor activities while being prepared for varying temperatures.

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

The chart illustrates September temperature patterns in Inverness, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Inverness, September typically has an average temperature of 25°C (78°F), with highs reaching up to 37°C (98°F) and lows dropping to around 12°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec505661657479818178705652
Data source: Temperature data for Inverness 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 Inverness

In Inverness in September, the precipitation amount is 113 mm (4.4 in) over the course of 11 days.

September Precipitation Trends in Inverness

The chart displays monthly precipitation patterns in Inverness, 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 Inverness, September typically receives around 113 mm (4.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec1081189512411712210412611311965125
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Inverness

In Inverness in September humidity is 79%. With an average temperature of 25°C (78°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor activities less inviting and requiring frequent breaks to stay refreshed.

September Average Humidity in Inverness

This chart illustrates the average monthly humidity levels in Inverness, 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 Inverness is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%79%77%74%70%78%78%79%74%83%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Inverness

In Inverness 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 Inverness.

Maximum UV Index Levels in Inverness for September

The chart shows the monthly maximum UV Index (UVI) for Inverness 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 Inverness typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579101111111110864
Data source: Inverness 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 Inverness Compares to Other Months

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

This table compares monthly weather conditions in Inverness, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)108 mm (4.3 inches)83%moderate
February Weather13°C (56°F)118 mm (4.6 inches)82%high
March Weather16°C (61°F)95 mm (3.7 inches)79%very high
April Weather19°C (66°F)124 mm (4.9 inches)77%very high
May Weather23°C (74°F)117 mm (4.6 inches)74%extreme
June Weather26°C (79°F)122 mm (4.8 inches)70%extreme
July Weather27°C (81°F)104 mm (4.1 inches)78%extreme
August Weather27°C (81°F)126 mm (5.0 inches)78%extreme
September Weather25°C (78°F)113 mm (4.4 inches)79%very high
October Weather21°C (70°F)119 mm (4.7 inches)74%very high
November Weather13°C (57°F)65 mm (2.6 inches)83%high
December Weather11°C (53°F)125 mm (4.9 inches)86%moderate

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