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Has the climate in Charlottetown changed?

Charlottetown has warmed about 3°F between 1971 and 2012.

About 0.7°F per decade, measured from Charlottetown'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? Charlottetown's warming is broadly in line with other cities in Canada — 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.

Average temperature
+1.8°F
1970s
41.8°F
Recent
43.5°F
A steady upward drift

Charlottetown's temperature, year by year

Average temperature for each year from 1971 to 2012.

38°40°42°44°46°48°1971: 41.6°F1972: 39.4°F1973: 42.3°F1974: 40.5°F1975: 41.6°F1976: 41.5°F1977: 41.9°F1978: 40.6°F1979: 43.2°F1980: 40.4°F1981: 43.8°F1982: 41.2°F1983: 43.7°F1984: 42.7°F1985: 40.1°F1986: 40.3°F1987: 41.4°F1988: 41.2°F1989: 40.3°F1990: 42.8°F1991: 41.9°F1992: 40.4°F1993: 39.8°F1994: 41.5°F1995: 41.6°F1996: 42.3°F1997: 40.4°F1998: 43.5°F1999: 45.3°F2000: 42.7°F2001: 43.3°F2002: 42.1°F2003: 42.4°F2004: 41.6°F2005: 43.0°F2006: 45.3°F2007: 42.0°F2008: 43.4°F2009: 42.6°F2010: 45.7°F2011: 44.0°F2012: 46.2°Flong-term trend197119801990200020102012
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.

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°January: +0.9°F+0.9JFebruary: +1.0°F+1.0FMarch: +0.9°F+0.9MApril: +0.8°F+0.8AMay: +0.1°F+0.1MJune: +0.1°F+0.1JJuly: +0.6°F+0.6JAugust: +0.8°F+0.8ASeptember: +1.6°F+1.6SOctober: +1.4°F+1.4ONovember: +1.7°F+1.7NDecember: +2.6°F+2.6D

December has warmed the most — about 2.6°F. The warming runs across the whole year, not just one season.

Methodology & sources

Temperature — 1991–2020 normals computed from 22 years of daily observations at Charlottetown A, a weather station, about 6 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →