McAllen, TX All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded in McAllen, from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 109.9°F (43°C) | May 10, 2024 |
| Record Low | 17°F (-8°C) | January 12, 1962 |
| Lowest High | 28.9°F (-2°C) | January 30, 1951 and December 25, 1983 and December 23, 1989 |
| Highest Low | 87.9°F (31°C) | August 21, 1945 |
| Highest Mean | 95.0°F (35°C) | June 23, 2017 and May 10, 2024 |
| Lowest Mean | 23.9°F (-4°C) | December 25, 1983 and December 23, 1989 |
| Precipitation | ||
| Max in One Calendar Day | 7.81" (198.4 mm) | August 10, 1980 |
| Max in One Month | 17.87" (453.9 mm) | September 1967 |
| Least in One Month | 0.00" (0.0 mm) | November 1945 |
| Max in One Year | 42.35" (1075.6 mm) | 1967 |
| Least in One Year | 8.05" (204.4 mm) | 1989 |
| Snowfall | ||
| Max in One Calendar Day | 1.7" (4.3 cm) | December 25, 2004 |
| Max in One Month | 1.7" (4.3 cm) | December 2004 |
| Max in One Season | 1.7" (4.3 cm) | 2004-05 |
| Max in One Year | 1.7" (4.3 cm) | 2004 |
| Earliest Snow | 1.7" (4.3 cm) | December 25, 2004 |
| Earliest Measurable Snow | 1.7" (4.3 cm) | December 25, 2004 |
| Latest Snow | 1.7" (4.3 cm) | December 25, 2004 |
| Latest Measurable Snow | 1.7" (4.3 cm) | December 25, 2004 |
| Period of Record | ||
| Temperature | June 1, 1941 – August 3, 2026 | |
| Precipitation | June 1, 1941 – August 3, 2026 | |
| Snowfall | June 1, 1941 – August 3, 2026 | |
Note: Records compiled from NOAA GHCN-Daily observations at MCALLEN (2 mi from McAllen, TX). 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 McAllen, TX?
The all-time record high in McAllen, TX is 109.9°F (43°C), set on May 10, 2024.
What is the coldest temperature ever recorded in McAllen, TX?
The all-time record low in McAllen, TX is 17°F (-8°C), set on January 12, 1962.
What is the most rain McAllen, TX has ever had in one day?
The most precipitation recorded in one calendar day near McAllen, TX is 7.81 inches, on August 10, 1980.
What is the biggest snowfall ever recorded in McAllen, TX?
The most snow recorded in one calendar day near McAllen, TX is 1.7 inches, on December 25, 2004.
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