Historical Weather in Monterrey, Mexico
See 55+ years of weather history for any date in Monterrey going back to 1970.
Look Up a Specific Date
Monthly Climate Averages
Historical temperature and precipitation averages for Monterrey, Mexico, based on 55+ years of weather data.
Temperatures shown in Celsius with Fahrenheit in parentheses. Rainfall in millimetres, snowfall in centimetres.
Monterrey Weather by Month
The coldest January reading, -4°C (24°F) on January 13, 1975, has not been matched in 51 years.
The coldest February reading, -4°C (24°F) on February 3, 1985, has not been matched in 41 years.
March in Monterrey has become 1.6°C (3.0°F) warmer on average: the 2012–2026 average against 1970–1989.
April in Monterrey has become 2.0°C (3.5°F) warmer on average: the 2012–2026 average against 1970–1989.
A typical May brings 14 days above 35°C (95°F).
A typical June brings 19 days above 35°C (95°F).
A typical July brings 21 days above 35°C (95°F).
A typical August brings 22 days above 35°C (95°F).
5 of the 10 warmest Septembers on record in Monterrey have come since 2011.
October 2025 was the warmest October in 43 years of records, 3.9°C (7.1°F) above the long-run average.
The coldest November reading, 0°C (32°F) on November 29, 1976, has not been matched in 50 years.
The coldest December reading, -6°C (21°F) on December 23, 1989, has not been matched in 37 years.
Source: NOAA GHCN-Daily, Topo Chico (1971–2005); Monterrey (City) (1982–2026). Records through 2026.