Alamosa, CO All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded near Alamosa (81101), from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 96°F (36°C) | July 5, 1989 |
| Record Low | -50°F (-46°C) | January 28, 1948 |
| Lowest High | 0°F (-18°C) | December 7, 1964 |
| Highest Low | 59°F (15°C) | August 6, 1951 and July 31, 1966 and July 19, 1980 |
| Highest Mean | 74°F (23°C) | July 6, 2011 |
| Lowest Mean | -22.5°F (-30°C) | January 28, 1948 |
| Precipitation | ||
| Max in One Calendar Day | 1.77" (45.0 mm) | September 30, 1959 |
| Max in One Month | 5.41" (137.3 mm) | August 1993 |
| Least in One Month | 0.00" (0.0 mm) | November 1949 |
| Max in One Year | 11.58" (294.2 mm) | 1969 |
| Least in One Year | 3.42" (86.8 mm) | 1956 |
| Snowfall | ||
| Max in One Calendar Day | 15.8" (40.1 cm) | December 13, 1967 |
| Max in One Month | 29.2" (74.1 cm) | March 1973 |
| Max in One Season | 97.5" (247.6 cm) | 1972-73 |
| Max in One Year | 69.1" (175.5 cm) | 1973 |
| Earliest Snow | 4.2" (10.7 cm) | September 3, 1961 |
| Earliest Measurable Snow | 4.2" (10.7 cm) | September 3, 1961 |
| Latest Snow | 0.2" (0.5 cm) | June 13, 1983 |
| Latest Measurable Snow | 0.2" (0.5 cm) | June 13, 1983 |
| Period of Record | ||
| Temperature | January 1, 1948 – February 6, 2025 | |
| Precipitation | January 1, 1948 – February 6, 2025 | |
| Snowfall | January 1, 1948 – February 6, 2025 | |
Note: Records compiled from NOAA GHCN-Daily observations at ALAMOSA-BERGMAN FLD (2 mi from Alamosa, CO). Quality-flagged readings are excluded. Monthly and annual totals require substantially complete reporting for “least” records.
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Frequently Asked Questions
What is the hottest temperature ever recorded in Alamosa, CO?
The all-time record high in Alamosa, CO is 96°F (36°C), set on July 5, 1989.
What is the coldest temperature ever recorded in Alamosa, CO?
The all-time record low in Alamosa, CO is -50°F (-46°C), set on January 28, 1948.
What is the most rain Alamosa, CO has ever had in one day?
The most precipitation recorded in one calendar day near Alamosa, CO is 1.77 inches, on September 30, 1959.
What is the biggest snowfall ever recorded in Alamosa, CO?
The most snow recorded in one calendar day near Alamosa, CO is 15.8 inches, on December 13, 1967.
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