September Weather in Gray, United States

Last updated: June 24, 2025

In Gray, United States, the average temperature in September hovers around 25°C (78°F). However, be prepared for a wide range of temperatures, with a minimum of 12°C (54°F) and a blistering maximum of 37°C (99°F). Expect to experience about 100 mm (4.0 in) of precipitation over 8 days, contributing to an average humidity level of 82%. Enjoy the diverse weather while exploring this vibrant locale!

September Temperature in Gray

In September in Gray, the average temperature is 25°C (78°F). Maximums can reach 37°C (99°F) and minimums can be as low as 12°C (54°F). This climate makes Gray an ideal destination for travelers seeking warm weather and a pleasant getaway.

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

The chart illustrates September temperature patterns in Gray, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gray, September typically has an average temperature of 25°C (78°F), with highs reaching up to 37°C (99°F) and lows dropping to around 12°C (54°F).

Data source: Temperature data for Gray generated using information from the Copernicus Climate Change Service.

September Precipitation in Gray

In Gray in September, the precipitation amount is 100 mm (4.0 in) distributed over a span of 8 days.

September Precipitation Trends in Gray

The chart displays monthly precipitation patterns in Gray, 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 Gray, September typically receives around 100 mm (4.0 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Gray

In Gray in September, humidity is 82%. With an average temperature of 25°C (78°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities a bit more challenging and encouraging you to seek shade or a cool spot during your travels.

September Average Humidity in Gray

This chart illustrates the average monthly humidity levels in Gray, 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 Gray is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Gray

In Gray 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 Gray.

Maximum UV Index Levels in Gray for September

The chart shows the monthly maximum UV Index (UVI) for Gray 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 Gray typically reaches 9, which falls under the very high exposure category.

Data source: Gray 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 Gray Compares to Other Months

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

This table compares monthly weather conditions in Gray, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	107 mm (4.2 inches)	86%	moderate
February Weather	12°C (55°F)	128 mm (5.1 inches)	84%	high
March Weather	15°C (59°F)	81 mm (3.2 inches)	83%	very high
April Weather	18°C (65°F)	102 mm (4.0 inches)	81%	very high
May Weather	23°C (74°F)	92 mm (3.6 inches)	81%	extreme
June Weather	26°C (79°F)	122 mm (4.8 inches)	81%	extreme
July Weather	27°C (82°F)	100 mm (3.9 inches)	83%	extreme
August Weather	27°C (81°F)	112 mm (4.4 inches)	81%	very high
September Weather	25°C (78°F)	100 mm (4.0 inches)	82%	very high
October Weather	21°C (69°F)	103 mm (4.0 inches)	78%	very high
November Weather	13°C (56°F)	80 mm (3.1 inches)	86%	high
December Weather	11°C (51°F)	121 mm (4.8 inches)	89%	moderate