September Weather in Calhan, United States

Last updated: June 24, 2025

In September, the average temperature in Calhan, United States hovers around 18°C (65°F). While you might enjoy warm days with highs reaching up to 35°C (94°F), be prepared for cooler moments that can drop to a chilly -2°C (29°F). Expect about 26 mm (1.0 in) of precipitation spread across 6 days, with an average humidity of 79%, creating a typically humid atmosphere.

September Temperature in Calhan

In September in Calhan, the average temperature is 18°C (65°F), with maximums reaching 35°C (94°F) and minimums dropping as low as -2°C (29°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack both warm and cool clothing to enjoy their stay.

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

The chart illustrates September temperature patterns in Calhan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Calhan, September typically has an average temperature of 18°C (65°F), with highs reaching up to 35°C (94°F) and lows dropping to around -2°C (29°F).

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

September Precipitation in Calhan

In Calhan in September, the precipitation amount is 26 mm (1.0 in) over the course of 6 days.

September Precipitation Trends in Calhan

The chart displays monthly precipitation patterns in Calhan, 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 Calhan, September typically receives around 26 mm (1.0 inches) of precipitation spread over approximately 6 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 Calhan

In Calhan in September, humidity is 79%. With an average temperature of 18°C (65°F), this humidity feels like walking through a warm mist, making traveling slightly uncomfortable and sticky, but offering a refreshing escape when you find moments of shade or a breeze.

September Average Humidity in Calhan

This chart illustrates the average monthly humidity levels in Calhan, 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 Calhan is approximately 79%, 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 Calhan

In Calhan 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 Calhan.

Maximum UV Index Levels in Calhan for September

The chart shows the monthly maximum UV Index (UVI) for Calhan 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 Calhan typically reaches 10, which falls under the very high exposure category.

Data source: Calhan 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 Calhan Compares to Other Months

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

This table compares monthly weather conditions in Calhan, 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)	13 mm (0.5 inches)	74%	moderate
February Weather	-2°C (30°F)	17 mm (0.7 inches)	75%	moderate
March Weather	4°C (40°F)	49 mm (1.9 inches)	66%	very high
April Weather	8°C (47°F)	36 mm (1.4 inches)	62%	extreme
May Weather	13°C (56°F)	72 mm (2.8 inches)	74%	extreme
June Weather	20°C (68°F)	40 mm (1.6 inches)	76%	extreme
July Weather	22°C (72°F)	65 mm (2.5 inches)	75%	extreme
August Weather	21°C (71°F)	44 mm (1.7 inches)	80%	extreme
September Weather	18°C (65°F)	26 mm (1.0 inches)	79%	very high
October Weather	9°C (48°F)	28 mm (1.1 inches)	77%	high
November Weather	4°C (40°F)	14 mm (0.5 inches)	74%	moderate
December Weather	0°C (33°F)	8 mm (0.3 inches)	80%	moderate