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Has the climate in Ciudad Delicias changed?

Ciudad Delicias has warmed about 1.6°F between 1971 and 2000.

About 0.6°F per decade, measured from Ciudad Delicias's official daily weather records, 1971–2000. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Ciudad Delicias'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
22 fewer nights
1970s
42 / yr
Recent
20 / yr
Milder winters — fewer frosts
Average temperature
+1.5°F
1970s
65.9°F
Recent
67.4°F
A steady upward drift
Hot days above 90°F
2 more days
1970s
105 / yr
Recent
107 / yr
More days of serious heat
Rainy days
3 fewer days
1970s
45 / yr
Recent
42 / yr
Drier on average

Ciudad Delicias's temperature, year by year

Average temperature for each year from 1971 to 2000.

62°64°66°68°70°1971: 67.2°F1972: 68.0°F1973: 66.0°F1974: 66.6°F1975: 64.9°F1976: 63.7°F1977: 66.0°F1978: 65.2°F1979: 65.2°F1980: 66.9°F1981: 66.6°F1982: 68.4°F1983: 66.3°F1984: 66.8°F1986: 67.1°F1987: 65.5°F1988: 67.0°F1990: 67.0°F1991: 65.7°F1992: 65.5°F1993: 66.8°F1994: 68.6°F1995: 68.0°F1996: 67.6°F1997: 66.4°F1998: 68.3°F1999: 67.7°F2000: 67.8°Flong-term trend1971198019902000
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 8 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.

-0.5°0.0°+0.5°+1.0°+1.5°January: +0.6°F+0.6JFebruary: +1.0°F+1.0FMarch: -0.1°F-0.1MApril: -0.0°F-0.0AMay: +1.3°F+1.3MJune: +0.7°F+0.7JJuly: +0.9°F+0.9JAugust: +0.9°F+0.9ASeptember: +0.8°F+0.8SOctober: +0.4°F+0.4ONovember: +0.6°F+0.6NDecember: -0.2°F-0.2D

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 Delicias (smn), about 1 km from the city centre.

How we build these numbers →