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September Weather in Glasgow, United States

Last updated: June 24, 2025

In September, the average temperature in Glasgow, United States is a pleasant 22°C (72°F). However, temperatures can vary significantly, with a minimum of 5°C (42°F) and a maximum of 35°C (95°F). Expect some moisture, as 68 mm (2.7 in) of precipitation typically falls over about 6 days. The average humidity during this time is a comfortable 72%, making it a lovely month to visit!

September Temperature in Glasgow

In September in Glasgow, the average temperature is 22°C (72°F). Maximum temperatures can reach 35°C (95°F), while the minimum can drop as low as 5°C (42°F). This diverse range of temperatures makes Glasgow an ideal destination for travelers seeking both warmth and a refreshing cooler climate.

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

The chart illustrates September temperature patterns in Glasgow, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Glasgow, September typically has an average temperature of 22°C (72°F), with highs reaching up to 35°C (95°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec313346546676807672574438
Data source: Temperature data for Glasgow 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 Glasgow

In Glasgow in September, the precipitation amount is 68 mm (2.7 in) spread over the course of 6 days.

September Precipitation Trends in Glasgow

The chart displays monthly precipitation patterns in Glasgow, 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 Glasgow, September typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec6455115107214131109115681125038
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Glasgow

In Glasgow in September humidity is 72%. With an average temperature of 22°C (72°F), this humidity feels like you are stepping into a warm, embracing blanket, making traveling feel sweaty and slightly stifling, but the balmy weather is also quite perfect for exploring local attractions.

September Average Humidity in Glasgow

This chart illustrates the average monthly humidity levels in Glasgow, 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 Glasgow is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%78%75%77%82%83%81%78%72%72%84%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Glasgow

In Glasgow 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 Glasgow.

Maximum UV Index Levels in Glasgow for September

The chart shows the monthly maximum UV Index (UVI) for Glasgow 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 Glasgow typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
Data source: Glasgow 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 Glasgow Compares to Other Months

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

This table compares monthly weather conditions in Glasgow, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)64 mm (2.5 inches)80%moderate
February Weather1°C (33°F)55 mm (2.2 inches)78%moderate
March Weather8°C (46°F)115 mm (4.5 inches)75%high
April Weather12°C (54°F)107 mm (4.2 inches)77%very high
May Weather19°C (66°F)214 mm (8.4 inches)82%very high
June Weather25°C (77°F)131 mm (5.2 inches)83%extreme
July Weather26°C (80°F)109 mm (4.3 inches)81%extreme
August Weather25°C (76°F)115 mm (4.5 inches)78%very high
September Weather22°C (72°F)68 mm (2.7 inches)72%very high
October Weather14°C (58°F)112 mm (4.4 inches)72%high
November Weather7°C (44°F)50 mm (2.0 inches)84%moderate
December Weather3°C (38°F)38 mm (1.5 inches)86%moderate

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