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Has the climate in Ciudad López Mateos changed?

Ciudad López Mateos has warmed about 2.6°F between 1971 and 2012.

About 0.9°F per decade, measured from Ciudad López Mateos'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? Ciudad López Mateos's climate has warmed faster 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
20 fewer nights
1970s
25 / yr
Recent
5 / yr
Milder winters — fewer frosts
Average temperature
+2.5°F
1970s
58.5°F
Recent
61.1°F
A steady upward drift
Hot days above 90°F
1 more day
1970s
0 / yr
Recent
1 / yr
More days of serious heat
Rainy days
24 fewer days
1970s
95 / yr
Recent
71 / yr
Drier on average

Ciudad López Mateos's temperature, year by year

Average temperature for each year from 1971 to 2012.

56°58°60°62°64°1971: 59.0°F1972: 59.2°F1973: 59.4°F1974: 58.3°F1975: 57.9°F1976: 57.8°F1977: 58.4°F1978: 58.9°F1979: 58.5°F1980: 58.0°F1981: 57.2°F1982: 57.3°F1983: 58.8°F1984: 58.0°F1985: 57.5°F1986: 57.8°F1987: 57.2°F1988: 58.3°F1997: 59.9°F1998: 61.1°F1999: 59.8°F2003: 61.2°F2004: 60.5°F2005: 63.6°F2006: 62.8°F2007: 60.9°F2008: 59.7°F2009: 61.7°F2011: 60.3°F2012: 60.0°Flong-term trend197119802012
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 29 fewer 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.

0.0°+0.5°+1.0°+1.5°+2.0°+2.5°+3.0°+3.5°January: +2.9°F+2.9JFebruary: +3.1°F+3.1FMarch: +1.9°F+1.9MApril: +2.1°F+2.1AMay: +2.1°F+2.1MJune: +2.4°F+2.4JJuly: +2.6°F+2.6JAugust: +2.5°F+2.5ASeptember: +2.6°F+2.6SOctober: +2.3°F+2.3ONovember: +2.7°F+2.7NDecember: +2.5°F+2.5D

February has warmed the most — about 3.1°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 Molinito, about 12 km from the city centre.

How we build these numbers →