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Has the climate in La Rioja changed?

La Rioja has warmed about 2.1°F between 1971 and 2020.

About 0.4°F per decade, measured from La Rioja's official daily weather records, 1971–2020. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? La Rioja's warming is broadly in line with other cities in Argentina — 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
1 more night
1970s
9 / yr
Recent
10 / yr
Colder winters — more frosts
Average temperature
+1.9°F
1970s
68.5°F
Recent
70.4°F
A steady upward drift
Hot days above 90°F
39 fewer days
1970s
109 / yr
Recent
70 / yr
Slightly fewer hot days
Rainy days
18 more days
1970s
19 / yr
Recent
37 / yr
Wetter on average

La Rioja's temperature, year by year

Average temperature for each year from 1971 to 2020.

66°68°70°72°74°76°1971: 70.2°F1972: 70.4°F1973: 69.2°F1974: 68.8°F1975: 69.0°F1976: 68.1°F1977: 68.7°F1978: 67.9°F1979: 67.2°F1980: 67.6°F1981: 67.6°F1982: 68.5°F1983: 68.2°F1984: 67.1°F1985: 68.5°F1986: 69.2°F1987: 68.9°F1988: 68.3°F1989: 69.7°F1990: 68.5°F1991: 69.0°F1992: 67.8°F1993: 69.1°F1994: 71.4°F1995: 70.4°F1996: 69.2°F1997: 70.0°F1998: 68.3°F1999: 67.4°F2000: 67.3°F2001: 68.3°F2002: 68.6°F2003: 69.7°F2004: 69.6°F2005: 68.6°F2006: 70.4°F2007: 68.0°F2008: 70.0°F2009: 72.2°F2010: 71.6°F2011: 72.7°F2012: 74.5°F2013: 74.1°F2014: 70.1°F2015: 69.3°F2016: 68.1°F2017: 69.5°F2018: 69.1°F2019: 68.3°F2020: 69.7°Flong-term trend197119801990200020102020
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 23 fewer days above 90°F 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°January: +1.6°F+1.6JFebruary: +0.5°F+0.5FMarch: +1.3°F+1.3MApril: +1.6°F+1.6AMay: +0.6°F+0.6MJune: +1.2°F+1.2JJuly: +0.2°F+0.2JAugust: +1.0°F+1.0ASeptember: +1.4°F+1.4SOctober: +0.7°F+0.7ONovember: +1.9°F+1.9NDecember: +0.4°F+0.4D

November has warmed the most — about 1.9°F. The warming runs across the whole year, not just one season.

Methodology & sources

Temperature — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at La_rioja_aero, about 7 km from the city centre.

How we build these numbers →