September Weather in Gray, United States

Last updated: June 24, 2025

In Gray, United States, the average temperature in September hovers around 21°C (70°F). Expect a range where the mercury may dip to a cool 6°C (43°F) or rise to a warm 34°C (93°F). With 85 mm (3.3 in) of precipitation spread over 9 days, you might want to pack your umbrella! The average humidity sits at a comfortable 67%. Make the most of your time in this delightful locale!

September Temperature in Gray

In September in Gray, the average temperature is 21°C (70°F), with maximums reaching 34°C (93°F) and minimums dropping as low as 6°C (43°F). This makes it a great time to explore the area, as you can enjoy warm days and cool evenings.

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 21°C (70°F), with highs reaching up to 34°C (93°F) and lows dropping to around 6°C (43°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 85 mm (3.3 in) over the course of 9 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 85 mm (3.3 inches) of precipitation spread over approximately 9 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 67%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making travel a bit stifling but still enjoyable if you're prepared with light clothing and plenty of water.

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 67%, 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 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 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 10, 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	4°C (39°F)	96 mm (3.8 inches)	88%	moderate
February Weather	7°C (44°F)	157 mm (6.2 inches)	88%	high
March Weather	9°C (49°F)	131 mm (5.2 inches)	87%	very high
April Weather	14°C (57°F)	138 mm (5.4 inches)	84%	very high
May Weather	19°C (66°F)	116 mm (4.6 inches)	84%	extreme
June Weather	22°C (72°F)	104 mm (4.1 inches)	83%	extreme
July Weather	24°C (76°F)	82 mm (3.2 inches)	79%	extreme
August Weather	23°C (74°F)	102 mm (4.0 inches)	66%	very high
September Weather	21°C (70°F)	85 mm (3.3 inches)	67%	very high
October Weather	16°C (60°F)	118 mm (4.7 inches)	76%	very high
November Weather	8°C (46°F)	80 mm (3.2 inches)	89%	moderate
December Weather	6°C (42°F)	125 mm (4.9 inches)	88%	moderate