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Has the climate in Río Blanco changed?

Río Blanco has warmed about 2.3°F since 1989.

About 0.8°F per decade, measured from Río Blanco's official daily weather records, 1989–2025. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Río Blanco's warming is broadly in line with other cities in Mexico — neither unusually fast nor unusually slow.

What has actually changed

Each card compares the 1970s (the first ten years of the record) with recent years (the last ten) — the same span the headline and the chart use.

Freezing nights
about the same
1970s
0 / yr
Recent
0 / yr
Winters about as cold as before
Average temperature
+2.1°F
1970s
66.3°F
Recent
68.4°F
A steady upward drift
Hot days above 90°F
8 more days
1970s
6 / yr
Recent
14 / yr
More days of serious heat
Rainy days
7 fewer days
1970s
108 / yr
Recent
101 / yr
Drier on average

Río Blanco's temperature, year by year

Average temperature for each year from 1989 to 2025.

64°66°68°70°1989: 65.3°F1990: 65.3°F1991: 66.5°F1993: 67.3°F1998: 69.1°F1999: 66.2°F2000: 65.6°F2001: 65.6°F2002: 66.0°F2005: 67.2°F2006: 66.7°F2007: 66.6°F2008: 66.8°F2009: 66.6°F2010: 66.5°F2011: 67.2°F2012: 66.8°F2014: 66.4°F2015: 67.0°F2016: 67.8°F2017: 67.5°F2018: 67.3°F2019: 68.6°F2020: 68.2°F2021: 68.6°F2023: 69.4°F2024: 69.9°F2025: 68.5°Flong-term trend198919902000201020202025
a warmer-than-average year a cooler-than-average year

Each bar is one year. Most recent years sit above the older ones. Some recent years still came in cool — warming is a slope, not a straight climb.

In day-to-day terms, that long-term shift shows up as about 5 more days above 90°F compared with the 1970s.

When in the year the change shows up

How much warmer each month is now than in the 1970s. Useful if you garden or care about a particular season — otherwise the headline above already has the answer.

-1.0°-0.5°0.0°+0.5°+1.0°+1.5°+2.0°+2.5°+3.0°+3.5°+4.0°January: +1.1°F+1.1JFebruary: +2.6°F+2.6FMarch: +1.9°F+1.9MApril: +3.9°F+3.9AMay: +1.0°F+1.0MJune: +2.3°F+2.3JJuly: +1.6°F+1.6JAugust: +2.5°F+2.5ASeptember: +1.8°F+1.8SOctober: +2.6°F+2.6ONovember: -0.8°F-0.8NDecember: +1.8°F+1.8D

April has warmed the most — about 3.9°F. The warming runs across the whole year, not just one season.

Methodology & sources

Temperature — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at San Bernardino Lagunas, about 28 km from the city centre.

How we build these numbers →