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Has the climate in Guadalupe changed?

Guadalupe has warmed about 1.7°F between 1971 and 2012.

About 0.5°F per decade, measured from Guadalupe'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? Guadalupe'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
4 more nights
1970s
5 / yr
Recent
9 / yr
Colder winters — more frosts
Average temperature
+2.0°F
1970s
60.6°F
Recent
62.7°F
A steady upward drift
Hot days above 90°F
3 more days
1970s
5 / yr
Recent
8 / yr
More days of serious heat
Rainy days
about the same
1970s
50 / yr
Recent
50 / yr
Rainfall pattern about the same

Guadalupe's temperature, year by year

Average temperature for each year from 1971 to 2012.

56°58°60°62°64°66°68°70°72°1971: 59.2°F1972: 60.0°F1973: 59.5°F1974: 59.5°F1975: 59.4°F1976: 57.6°F1977: 60.0°F1978: 59.5°F1979: 60.6°F1982: 70.8°F1983: 67.4°F1984: 67.7°F1985: 67.1°F1989: 63.0°F1990: 62.4°F1991: 61.7°F1993: 62.5°F1994: 62.7°F1995: 62.1°F1996: 61.7°F1997: 61.9°F1998: 62.5°F1999: 61.9°F2000: 62.6°F2005: 62.6°F2006: 62.7°F2007: 62.8°F2008: 61.7°F2009: 63.1°F2010: 61.5°F2011: 64.5°F2012: 63.1°Flong-term trend19711990200020102012
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 4 more freezing nights a year 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°January: -0.5°F-0.5JFebruary: +0.4°F+0.4FMarch: -0.5°F-0.5MApril: +0.6°F+0.6AMay: +0.1°F+0.1MJune: +0.6°F+0.6JJuly: +0.7°F+0.7JAugust: +0.6°F+0.6ASeptember: +0.3°F+0.3SOctober: -0.3°F-0.3ONovember: -0.7°F-0.7NDecember: -0.3°F-0.3D

November has cooled the most — about 0.7°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 Zacatecas (dge), about 6 km from the city centre.

How we build these numbers →