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September Weather in Graham, United States

Last updated: June 24, 2025

In September, the average temperature in Graham, United States hovers around 15°C (58°F). Expect minimum temperatures to dip to 4°C (39°F) and maximums soaring to 31°C (87°F). With 104 mm (4.1 in) of precipitation spread over about 10 days, the air holds an average humidity of 62%, creating a uniquely comfortable atmosphere.

September Temperature in Graham

In September in Graham, the average temperature is 15°C (58°F). The maximum can reach 31°C (87°F) and the minimum can be as low as 4°C (39°F). This variation makes Graham an ideal destination for travelers seeking pleasant days and cooler evenings.

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

The chart illustrates September temperature patterns in Graham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Graham, September typically has an average temperature of 15°C (58°F), with highs reaching up to 31°C (87°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec393742475358636458484339
Data source: Temperature data for Graham 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 Graham

In Graham in September, the precipitation amount is 104 mm (4.1 in) over a period of 10 days.

September Precipitation Trends in Graham

The chart displays monthly precipitation patterns in Graham, 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 Graham, September typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec20223115813785761617104172206226
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Graham

In Graham in September humidity is 62%. With an average temperature of 15°C (58°F), this humidity feels like a brisk embrace, making outdoor activities invigorating yet slightly damp, ideal for exploring but also requiring a light jacket.

September Average Humidity in Graham

This chart illustrates the average monthly humidity levels in Graham, 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 Graham is approximately 62%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%87%84%81%82%79%63%62%83%89%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Graham

In Graham in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Graham.

Maximum UV Index Levels in Graham for September

The chart shows the monthly maximum UV Index (UVI) for Graham 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 Graham typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987532
Data source: Graham 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 Graham Compares to Other Months

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

This table compares monthly weather conditions in Graham, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)201 mm (7.9 inches)86%low
February Weather3°C (37°F)231 mm (9.1 inches)86%moderate
March Weather5°C (42°F)158 mm (6.2 inches)87%moderate
April Weather8°C (47°F)137 mm (5.4 inches)84%high
May Weather12°C (54°F)85 mm (3.3 inches)81%very high
June Weather15°C (59°F)76 mm (3.0 inches)82%very high
July Weather17°C (63°F)16 mm (0.6 inches)79%very high
August Weather18°C (64°F)17 mm (0.7 inches)63%very high
September Weather15°C (58°F)104 mm (4.1 inches)62%high
October Weather9°C (48°F)172 mm (6.8 inches)83%moderate
November Weather6°C (43°F)206 mm (8.1 inches)89%moderate
December Weather4°C (39°F)226 mm (8.9 inches)88%low

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