Tropical nights in Switzerland

Tropical nights in Switzerland: 0 nights in 1950 and 0.2 nights in 2014, in the CMIP6 climate models’ median run.

Latest, 2014: 0.2 nights; Modelled
Since 1950: +0.2 nights
Projected, 2100: 3.8 nights; CMIP6 model median (SSP2-4.5, middle of the road)

Watch it change on the map

nights a year · CMIP6

CMIP6 historical run, model medianCMIP6 model median (SSP2-4.5, middle of the road)models’ 10th–90th percentile

What the numbers say

The CMIP6 model median (SSP2-4.5, middle of the road) puts it at 3.8 nights in 2100, between 0.8 nights and 11.7 nights (models’ 10th–90th percentile).

Every year

nights a year · CMIP6

Year	Switzerland
2014	0.2
2013	0.1
2012	0.1
2011	0.1
2010	0.1
2009	0.1
2008	0.1
2007	0
2006	0
2005	0.1
2004	0.1
2003	0.1
2002	0.1
2001	0.1
2000	0
1999	0
1998	0
1997	0
1996	0
1995	0
1994	0
1993	0
1992	0
1991	0
1990	0
1989	0
1988	0
1987	0
1986	0
1985	0
1984	0
1983	0
1982	0
1981	0
1980	0
1979	0
1978	0
1977	0
1976	0
1975	0
1974	0
1973	0
1972	0
1971	0
1970	0
1969	0
1968	0
1967	0
1966	0
1965	0
1964	0
1963	0
1962	0
1961	0
1960	0
1959	0
1958	0
1957	0
1956	0
1955	0
1954	0
1953	0
1952	0
1951	0
1950	0

CMIP6 model median (SSP2-4.5, middle of the road) · 2015–2100

Year	Switzerland
2015	0.10–1.1
2016	0.20–1.3
2017	0.20–1.5
2018	0.10–1.3
2019	0.30–1.4
2020	0.10–1.4
2021	0.30–2.2
2022	0.30–2.1
2023	0.30–1.9
2024	0.40–1.5
2025	0.40–1.9
2026	0.50–1.9
2027	0.30–1.6
2028	0.50–1.9
2029	0.80–2.2
2030	0.30–2.4
2031	0.40–1.4
2032	0.60.1–2.4
2033	0.60–3.2
2034	0.70.1–3.3
2035	0.70.1–2.4
2036	0.80–2.7
2037	0.60.1–2.7
2038	0.80–2.9
2039	0.90–2.6
2040	0.90–2.6
2041	10–2.9
2042	0.80.1–2.8
2043	10.1–2.7
2044	0.80.1–3.3
2045	1.20–3.5
2046	1.20.2–3.8
2047	1.50.1–3.8
2048	10.1–4.6
2049	1.60.1–4.2
2050	1.20.3–3.5
2051	10–4
2052	1.40.1–3.9
2053	0.80.1–3.8
2054	1.40.2–3.5
2055	1.30.1–3.4
2056	1.40.2–6.5
2057	1.70.2–3.7
2058	2.10.2–5.5
2059	1.80.1–7.1
2060	1.60.4–5.6
2061	1.90.1–4.9
2062	2.30.3–5
2063	2.20.2–5.9
2064	20.3–5
2065	20.1–7.4
2066	20.3–5.5
2067	3.80.8–10
2068	2.20.2–4.9
2069	2.60.7–5.9
2070	2.60.3–7.1
2071	2.90.1–7.8
2072	2.91.2–6.5
2073	20.3–7
2074	1.70.2–7.6
2075	2.40.4–7.7
2076	2.80.5–10.6
2077	2.40.5–8.8
2078	2.20.3–8.1
2079	2.60.4–8.5
2080	2.90.3–6.6
2081	2.90.5–8.3
2082	3.30.4–8.9
2083	2.50.5–7.9
2084	2.60.6–6.1
2085	30.9–7.7
2086	3.40.7–8.7
2087	4.10.5–10.4
2088	3.60.8–11.7
2089	3.61.1–9
2090	3.60.6–9.5
2091	40.7–9.8
2092	3.10.2–9.4
2093	2.70.7–7.8
2094	4.21.2–9.2
2095	3.90.2–11.4
2096	3.10.2–10
2097	2.80.2–10.3
2098	3.80.7–10.2
2099	3.90.4–10.7
2100	3.80.8–11.7

Good to know

Nights in a year when the temperature stays above 20 °C, averaged over the country.
Source: World Bank Climate Change Knowledge Portal, CMIP6 multi-model median.
The dashed line is the CMIP6 model median (SSP2-4.5, middle of the road), a scenario rather than a forecast; the band is its models’ 10th–90th percentile.
Climate model values are the median of the CMIP6 models, run on past emissions to 2014 and on SSP2-4.5, a middle-of-the-road path, after: they are not measurements.

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