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Has the climate in Salamanca changed?

Salamanca has warmed about 1°F between 1971 and 2012.

About 0.2°F per decade, measured from Salamanca's official daily weather records, 1971–2012. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Salamanca's climate has warmed more slowly than most other cities in Mexico.

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
1 more night
1970s
2 / yr
Recent
3 / yr
Colder winters — more frosts
Average temperature
+0.7°F
1970s
64.7°F
Recent
65.4°F
A steady upward drift
Hot days above 90°F
25 more days
1970s
7 / yr
Recent
32 / yr
More days of serious heat
Rainy days
4 fewer days
1970s
72 / yr
Recent
68 / yr
Drier on average

Salamanca's temperature, year by year

Average temperature for each year from 1971 to 2012.

62°64°66°68°1971: 64.9°F1972: 65.9°F1973: 65.1°F1974: 64.8°F1975: 64.4°F1976: 64.2°F1977: 64.6°F1978: 64.5°F1979: 64.5°F1980: 65.5°F1981: 64.7°F1982: 65.6°F1983: 63.7°F1984: 63.3°F1985: 63.3°F1986: 63.4°F1987: 63.4°F1988: 64.3°F1989: 64.4°F1990: 65.3°F1991: 64.9°F1992: 63.8°F1993: 64.4°F1994: 65.1°F1995: 65.2°F1996: 64.2°F1997: 64.5°F1998: 65.5°F1999: 64.4°F2000: 65.6°F2001: 65.5°F2002: 66.1°F2003: 65.8°F2004: 65.5°F2005: 66.0°F2006: 65.9°F2007: 65.6°F2008: 64.6°F2009: 65.8°F2010: 64.3°F2011: 65.4°F2012: 65.3°Flong-term trend197119801990200020102012
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 14 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.

-0.5°0.0°+0.5°+1.0°+1.5°January: +0.3°F+0.3JFebruary: +0.9°F+0.9FMarch: +0.5°F+0.5MApril: +1.1°F+1.1AMay: +1.2°F+1.2MJune: +0.8°F+0.8JJuly: +0.7°F+0.7JAugust: +0.9°F+0.9ASeptember: +0.5°F+0.5SOctober: +0.3°F+0.3ONovember: +0.0°F+0.0NDecember: -0.1°F-0.1D

May has warmed the most — about 1.3°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 Los Razos, about 12 km from the city centre.

How we build these numbers →