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Has the climate in Ciudad Obregón changed?

Ciudad Obregón has cooled about 1.1°F between 1973 and 1993.

About 0.6°F per decade, measured from Ciudad Obregón's official daily weather records, 1973–1993. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Ciudad Obregón'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
0 / yr
Recent
1 / yr
Colder winters — more frosts
Average temperature
−0.9°F
1970s
78.8°F
Recent
77.8°F
A small downward drift
Hot days above 90°F
99 more days
1970s
4 / yr
Recent
103 / yr
More days of serious heat
Rainy days
28 more days
1970s
0 / yr
Recent
28 / yr
Wetter on average

Ciudad Obregón's temperature, year by year

Average temperature for each year from 1973 to 1993.

74°76°78°80°82°1973: 77.6°F1974: 77.6°F1977: 81.2°F1978: 78.9°F1979: 78.3°F1980: 79.1°F1981: 79.0°F1982: 78.2°F1983: 77.1°F1984: 75.8°F1985: 76.0°F1986: 77.4°F1987: 77.1°F1989: 78.8°F1990: 78.5°F1991: 77.6°F1992: 76.8°F1993: 78.2°Flong-term trend1973198019901993
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 fewer days above 90°F compared with the 1970s.

Methodology & sources

Temperature — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at Ciudad Obregon (dge), inside the city.

How we build these numbers →