September Weather in Fort Greely, United States

Last updated: June 24, 2025

In Fort Greely, United States, the average temperature in September hovers around 8°C (46°F). Be prepared for a temperature range that can plunge to a chilling -12°C (11°F) and peak at a pleasant 22°C (72°F). This month witnesses approximately 56 mm (2.2 in) of precipitation spread over 12 days, coupled with a high average humidity of 94%.

September Temperature in Fort Greely

In September in Fort Greely, the average temperature is 8°C (46°F), with maximums reaching 22°C (72°F) and minimums dropping as low as -12°C (11°F). It's advisable to pack layers to ensure comfort during your travels in this variable climate.

September Weather in Fort Greely: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Fort Greely, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fort Greely, September typically has an average temperature of 8°C (46°F), with highs reaching up to 22°C (72°F) and lows dropping to around -12°C (11°F).

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

September Precipitation in Fort Greely

In Fort Greely in September, the precipitation amount is 56 mm (2.2 in) spread over 12 days.

September Precipitation Trends in Fort Greely

The chart displays monthly precipitation patterns in Fort Greely, 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 Fort Greely, September typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 12 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 Fort Greely

In Fort Greely in September humidity is 94%. With an average temperature of 8°C (46°F), this humidity feels like a dense blanket wrapping around you, making outdoor activities less enjoyable and causing you to feel damp and cold almost instantly.

September Average Humidity in Fort Greely

This chart illustrates the average monthly humidity levels in Fort Greely, 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 Fort Greely is approximately 94%, 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 Fort Greely

In Fort Greely in September, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Fort Greely, you can check the information here.

Maximum UV Index Levels in Fort Greely for September

The chart shows the monthly maximum UV Index (UVI) for Fort Greely 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 Fort Greely typically reaches 3, which falls under the moderate exposure category.

Data source: Fort Greely 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 Fort Greely Compares to Other Months

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

This table compares monthly weather conditions in Fort Greely, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-18°C (0°F)	14 mm (0.6 inches)	95%	low
February Weather	-16°C (4°F)	21 mm (0.8 inches)	93%	low
March Weather	-10°C (14°F)	24 mm (0.9 inches)	93%	low
April Weather	0°C (33°F)	23 mm (0.9 inches)	91%	moderate
May Weather	10°C (50°F)	42 mm (1.7 inches)	87%	moderate
June Weather	15°C (60°F)	78 mm (3.1 inches)	86%	moderate
July Weather	17°C (63°F)	74 mm (2.9 inches)	93%	high
August Weather	13°C (56°F)	119 mm (4.7 inches)	94%	moderate
September Weather	8°C (46°F)	56 mm (2.2 inches)	94%	moderate
October Weather	-1°C (30°F)	48 mm (1.9 inches)	97%	low
November Weather	-13°C (9°F)	33 mm (1.3 inches)	99%	low
December Weather	-14°C (7°F)	34 mm (1.3 inches)	96%	low