September Weather in Gray, United States

Last updated: June 24, 2025

In September, the average temperature in Gray, United States hovers around 17°C (63°F), with daily variations where the minimum can dip to 3°C (38°F) and the maximum can reach a warm 31°C (88°F). Expect about 68 mm (2.7 in) of precipitation spread over 8 days, contributing to an average humidity of 71%. Prepare accordingly for a variety of weather conditions!

September Temperature in Gray

In September in Gray, the average temperature is 17°C (63°F). Maximum temperatures can reach 31°C (88°F), while minimum temperatures can drop as low as 3°C (38°F). It's a great time to visit Gray, as the weather is mild and suitable for various outdoor activities.

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 17°C (63°F), with highs reaching up to 31°C (88°F) and lows dropping to around 3°C (38°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 68 mm (2.7 in) spread over 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 68 mm (2.7 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 71%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making outdoor activities enjoyable yet a bit sticky, so travelers should stay hydrated and take breaks in the shade.

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 71%, 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 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 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 7, which falls under the 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 (24°F)	81 mm (3.2 inches)	86%	low
February Weather	-3°C (26°F)	87 mm (3.4 inches)	84%	moderate
March Weather	0°C (33°F)	73 mm (2.9 inches)	82%	moderate
April Weather	7°C (44°F)	116 mm (4.6 inches)	80%	very high
May Weather	12°C (55°F)	78 mm (3.1 inches)	72%	very high
June Weather	18°C (65°F)	70 mm (2.7 inches)	72%	very high
July Weather	21°C (71°F)	127 mm (5.0 inches)	67%	very high
August Weather	21°C (70°F)	79 mm (3.1 inches)	66%	very high
September Weather	17°C (63°F)	68 mm (2.7 inches)	71%	high
October Weather	11°C (52°F)	127 mm (5.0 inches)	78%	moderate
November Weather	4°C (39°F)	110 mm (4.3 inches)	84%	moderate
December Weather	-2°C (29°F)	116 mm (4.6 inches)	81%	low