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Has the climate in Chillán changed?

Chillán has cooled about 1.3°F between 1986 and 2020.

About 1.0°F per decade, measured from Chillán's official daily weather records, 1986–2020. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

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

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
12 more nights
1970s
10 / yr
Recent
22 / yr
Colder winters — more frosts
Average temperature
−3.6°F
1970s
60.1°F
Recent
56.5°F
A small downward drift
Hot days above 90°F
10 more days
1970s
10 / yr
Recent
20 / yr
More days of serious heat
Rainy days
35 more days
1970s
44 / yr
Recent
79 / yr
Wetter on average

Chillán's temperature, year by year

Average temperature for each year from 1986 to 2020.

54°56°58°60°62°1986: 59.4°F1987: 61.9°F1999: 60.0°F2000: 59.2°F2010: 60.4°F2011: 60.4°F2012: 62.0°F2015: 60.2°F2016: 57.1°F2017: 56.5°F2018: 55.6°F2019: 56.7°F2020: 57.2°Flong-term trend1986200020102020
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 7 more days above 90°F compared with the 1970s.

Methodology & sources

Temperature — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at Generalbernardoohigginschillan, about 6 km from the city centre.

How we build these numbers →