September Weather Review

September of 2026 started hot and dry across south central and southeast Colorado with upper level ridging in place across the Rockies. Monsoonal moisture worked its way into the region through the middle of the month, while remnants of eastern Pacific Hurricane Polo brought abundant precipitation and cooler temperatures to much of southern Colorado through the end of the month.  

The following graphics depict monthly temperature and precipitation departures from normal across the state for the past month of September.

The preliminary average temperature in Alamosa for the past month of September was 59.6 degrees. This is 3.7 degrees above normal and makes September of 2026 the 2nd warmest September on record in Alamosa, just behind the warmest September of 2022,  when the average temperature was 59.9 degrees. The average September maximum temperature in Alamosa was 75.9 degrees, which is 1.5 degrees above normal.  The average September minimum temperature in Alamosa was 43.4 degrees, which is 6.1 degrees above normal.  Alamosa recorded 2.27 inches of precipitation through the month of September. This is 1.29 inches above normal and makes September of 2026 the 3rd wettest September on record, just behind the 2.98 inches recorded in 2013 and the 2.62 inches recorded in 1938.  (ALS POR: 1932-2026)    

The preliminary average temperature in Colorado Springs for the past month of September was 67.8 degrees. This is 4.8F above normal and makes September of 2026 the 3rd warmest September on record, just behind September of 2019 when the average temperature was 68.7F and September of 2021, when the average temperature was 68.0F.  The average September maximum temperature in Colorado Springs was 80.0 degrees, which is 2.9 degrees above normal. The average September minimum temperature in Colorado Springs was 55.5 degrees, which is 6.7 degrees above normal. Colorado Springs recorded 1.05 inches of precipitation throughout the month of September. This is 0.30 inches below normal though still makes September of 2026 the 35th wettest September on record.  (COS POR: 1895-2026)    

The preliminary average temperature in Pueblo for the past month of September was 71.7 degrees. This is 5.1 degrees above normal and makes September of 2026 the 3rd warmest September on record in Pueblo, just behind September of 2019 when the average temperature was 72.8F, and September of 2015 when the average temperature was 72.0F. The average September maximum temperature in Pueblo was 85.2  degrees, which is 2.1 degrees above normal. The average September minimum temperature in Pueblo was 58.3 degrees, which is 8.2 degrees above normal. Pueblo recorded 1.91 inches of precipitation in through out the month of September. This is 1.26 inches above normal and makes September of 2026 the 9th wettest September on record.    (PUB POR: 1888-2026)  

Looking ahead into October in Alamosa, the average high and low temperatures of 69 degrees and 31 degrees on October 1st, cool to 57 degrees and 19 degrees by the end of the month.  The average temperature for the month of October in Alamosa is 43.8 degrees.  Alamosa averages 0.65 inches of precipitation and 2.2 inches of snow through the month of October.            

In Colorado Springs, the average high and low temperatures of 71 degrees and 43 degrees on October 1st, cool to 59 degrees and 31 degrees by the end of the month. The average temperature for the month of October in Colorado Springs is 50.7 degrees.  Colorado Springs averages 0.77 inches of precipitation and 2.5 inches of snow through the month of October.           

In Pueblo, the average high and low temperatures of 77 degrees and 43 degrees on October 1st, cool to 63 degrees and 30 degrees by the end of the month. The average temperature for the month of October in Pueblo is 52.8 degrees. Pueblo averages 0.76 inches of precipitation and 1.9 inches of snow through the month of October.   

Below is the Climate Prediction Center's (CPC) temperature and precipitation outlook for October of 2026, which leans to above normal temperatures and equal chances of above, below and near normal precipitation across south central and southeast Colorado.