September Weather in Gallup, United States

Last updated: June 24, 2025

In Gallup, United States, the average temperature in September hovers around 19°C (67°F), with temperatures ranging from a brisk 2°C (35°F) to a warm 33°C (92°F). Expect a total precipitation of approximately 25 mm (1.0 in) spread over 3 days, contributing to an average humidity of 62%. Whether you’re looking to bask in the sun or enjoy a cool breeze, this month offers a delightful mix of weather!

September Temperature in Gallup

In September in Gallup, the average temperature is 19°C (67°F), with maximums hitting 33°C (92°F) and minimums dropping to 2°C (35°F). This varied climate makes it a great time to explore Gallup, so be sure to pack for both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Gallup, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gallup, September typically has an average temperature of 19°C (67°F), with highs reaching up to 33°C (92°F) and lows dropping to around 2°C (35°F).

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

September Precipitation in Gallup

In Gallup in September, the precipitation amount is 25 mm (1.0 in) over the course of 3 days.

September Precipitation Trends in Gallup

The chart displays monthly precipitation patterns in Gallup, 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 Gallup, September typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 3 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Gallup

In Gallup in September humidity is 62%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making it pleasant for traveling, though you might want to stay hydrated and take occasional breaks in the shade to fully enjoy your adventures.

September Average Humidity in Gallup

This chart illustrates the average monthly humidity levels in Gallup, 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 Gallup is approximately 62%, 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 Gallup

In Gallup in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Gallup.

Maximum UV Index Levels in Gallup for September

The chart shows the monthly maximum UV Index (UVI) for Gallup 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 Gallup typically reaches 11, which falls under the extreme exposure category.

Data source: Gallup 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 Gallup Compares to Other Months

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

This table compares monthly weather conditions in Gallup, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (31°F)	27 mm (1.1 inches)	81%	moderate
February Weather	2°C (35°F)	31 mm (1.2 inches)	83%	high
March Weather	6°C (43°F)	32 mm (1.3 inches)	71%	very high
April Weather	12°C (53°F)	15 mm (0.6 inches)	61%	extreme
May Weather	16°C (61°F)	15 mm (0.6 inches)	48%	extreme
June Weather	23°C (73°F)	5 mm (0.2 inches)	36%	extreme
July Weather	24°C (75°F)	38 mm (1.5 inches)	37%	extreme
August Weather	23°C (74°F)	12 mm (0.5 inches)	46%	extreme
September Weather	19°C (67°F)	25 mm (1.0 inches)	62%	extreme
October Weather	12°C (54°F)	21 mm (0.8 inches)	74%	very high
November Weather	6°C (44°F)	14 mm (0.5 inches)	82%	high
December Weather	1°C (33°F)	24 mm (1.0 inches)	82%	moderate