Days and Nights: Daily Maximum and Minimum Trends
Worldwide the daily maximum changed +0.22 C and the daily minimum +0.25 C per decade. Trends of both and of the day-night range for 27 places.
Data as of . Last revised (2026-10-17).
Key Facts
- From 1951 to 2025, the daily maximum in the world changed by +0.22 C per decade (+0.40 F) (95 percent interval +0.17 to +0.27 C) and the daily minimum by +0.25 C per decade (+0.45 F) (95 percent interval +0.21 to +0.29 C), from 3,978 stations.
- The daily minimum rose faster, by 0.03 C per decade more than the daily maximum; the two intervals overlap, so the data do not separate them.
- The day-night range (daily maximum minus daily minimum) changed by -0.03 C per decade (95 percent interval -0.06 to +0.01 C), an interval that includes zero.
- Among 26 continents and countries with both trends, the daily minimum rose faster in 13, the daily maximum rose faster in 12 and the two were equal in 1.
Days and Nights
World, against 1961-1990| Year | Daily maximum | Daily minimum | Day-night range (maximum minus minimum) |
|---|---|---|---|
| 1951 | +0.08 C | -0.20 C | +0.27 C |
| 1952 | -0.15 C | -0.43 C | +0.28 C |
| 1953 | +0.39 C | +0.09 C | +0.30 C |
| 1954 | -0.09 C | -0.22 C | +0.13 C |
| 1955 | -0.17 C | -0.37 C | +0.20 C |
| 1956 | -0.57 C | -0.73 C | +0.16 C |
| 1957 | +0.02 C | -0.08 C | +0.10 C |
| 1958 | -0.16 C | -0.19 C | +0.02 C |
| 1959 | +0.18 C | +0.14 C | +0.04 C |
| 1960 | -0.20 C | -0.26 C | +0.06 C |
| 1961 | +0.25 C | +0.13 C | +0.12 C |
| 1962 | +0.17 C | +0.02 C | +0.15 C |
| 1963 | +0.13 C | -0.12 C | +0.25 C |
| 1964 | -0.24 C | -0.37 C | +0.13 C |
| 1965 | -0.27 C | -0.36 C | +0.09 C |
| 1966 | -0.32 C | -0.45 C | +0.13 C |
| 1967 | +0.12 C | -0.03 C | +0.15 C |
| 1968 | -0.23 C | -0.32 C | +0.09 C |
| 1969 | -0.65 C | -0.65 C | +0.01 C |
| 1970 | -0.19 C | -0.27 C | +0.08 C |
| 1971 | -0.11 C | -0.19 C | +0.08 C |
| 1972 | -0.21 C | -0.24 C | +0.03 C |
| 1973 | +0.13 C | +0.23 C | -0.09 C |
| 1974 | -0.22 C | -0.13 C | -0.09 C |
| 1975 | +0.25 C | +0.26 C | -0.01 C |
| 1976 | -0.41 C | -0.59 C | +0.18 C |
| 1977 | -0.05 C | -0.04 C | -0.02 C |
| 1978 | -0.19 C | -0.08 C | -0.11 C |
| 1979 | -0.12 C | -0.12 C | 0.00 C |
| 1980 | +0.02 C | +0.01 C | +0.01 C |
| 1981 | +0.37 C | +0.46 C | -0.09 C |
| 1982 | +0.03 C | +0.11 C | -0.08 C |
| 1983 | +0.35 C | +0.59 C | -0.24 C |
| 1984 | -0.21 C | -0.04 C | -0.18 C |
| 1985 | -0.32 C | -0.17 C | -0.15 C |
| 1986 | +0.14 C | +0.24 C | -0.10 C |
| 1987 | -0.14 C | -0.03 C | -0.10 C |
| 1988 | +0.48 C | +0.49 C | -0.01 C |
| 1989 | +0.51 C | +0.59 C | -0.07 C |
| 1990 | +0.78 C | +0.88 C | -0.10 C |
| 1991 | +0.50 C | +0.65 C | -0.16 C |
| 1992 | +0.14 C | +0.35 C | -0.21 C |
| 1993 | +0.04 C | +0.32 C | -0.28 C |
| 1994 | +0.46 C | +0.46 C | +0.01 C |
| 1995 | +0.77 C | +0.92 C | -0.15 C |
| 1996 | +0.10 C | +0.22 C | -0.12 C |
| 1997 | +0.48 C | +0.58 C | -0.10 C |
| 1998 | +0.58 C | +0.81 C | -0.22 C |
| 1999 | +0.59 C | +0.59 C | -0.01 C |
| 2000 | +0.48 C | +0.70 C | -0.21 C |
| 2001 | +0.57 C | +0.67 C | -0.10 C |
| 2002 | +0.88 C | +0.86 C | +0.01 C |
| 2003 | +0.80 C | +0.86 C | -0.06 C |
| 2004 | +0.63 C | +0.85 C | -0.22 C |
| 2005 | +0.89 C | +1.07 C | -0.18 C |
| 2006 | +0.74 C | +0.84 C | -0.10 C |
| 2007 | +1.21 C | +1.32 C | -0.10 C |
| 2008 | +0.78 C | +0.94 C | -0.15 C |
| 2009 | +0.61 C | +0.72 C | -0.12 C |
| 2010 | +0.46 C | +0.76 C | -0.30 C |
| 2011 | +0.72 C | +0.92 C | -0.20 C |
| 2012 | +0.81 C | +0.84 C | -0.03 C |
| 2013 | +0.88 C | +1.02 C | -0.13 C |
| 2014 | +1.04 C | +1.08 C | -0.04 C |
| 2015 | +1.42 C | +1.53 C | -0.12 C |
| 2016 | +1.34 C | +1.55 C | -0.21 C |
| 2017 | +1.32 C | +1.45 C | -0.13 C |
| 2018 | +1.15 C | +1.19 C | -0.04 C |
| 2019 | +1.05 C | +1.05 C | +0.01 C |
| 2020 | +1.42 C | +1.10 C | +0.33 C |
| 2021 | +1.17 C | +0.87 C | +0.29 C |
| 2022 | +1.24 C | +0.90 C | +0.34 C |
| 2023 | +1.54 C | +1.16 C | +0.39 C |
| 2024 | +1.79 C | +1.51 C | +0.29 C |
| 2025 | +1.14 C | +1.75 C | -0.61 C |
From 1951 to 2025, the daily maximum in the world changed by +0.22 C per decade (+0.40 F) (95 percent interval +0.17 to +0.27 C) and the daily minimum by +0.25 C per decade (+0.45 F) (95 percent interval +0.21 to +0.29 C), from 3,978 stations.
The daily minimum rose faster, by 0.03 C per decade more than the daily maximum; the two intervals overlap, so the data do not separate them.
The day-night range (daily maximum minus daily minimum) changed by -0.03 C per decade (95 percent interval -0.06 to +0.01 C), an interval that includes zero.
Trends per decade
| Measure | Trend per decade (C) | 95% interval (C) | Years | Stations |
|---|---|---|---|---|
| Daily maximum | +0.22 | +0.17 to +0.27 | 1951 to 2025 | 3,978 |
| Daily minimum | +0.25 | +0.21 to +0.29 | 1951 to 2025 | 3,978 |
| Day-night range (maximum minus minimum) | -0.03 | -0.06 to +0.01 | 1951 to 2025 | 3,978 |
The day-night range is the daily maximum minus the daily minimum, so a falling range means the minimum rose by more than the maximum. Intervals allow for year to year persistence in the series.
Continents
Trend per decade, 95% interval in brackets| Place | Daily maximum, per decade (C) | Daily minimum, per decade (C) | Day-night range, per decade (C) | Faster | Stations |
|---|---|---|---|---|---|
| Asia | +0.24 (+0.13 to +0.34) | +0.28 (+0.22 to +0.34) | -0.04 (-0.16 to +0.07) | Minimum | 172 |
| Europe | +0.28 (+0.21 to +0.35) | +0.33 (+0.26 to +0.40) | -0.05 (-0.06 to -0.03) | Minimum | 1,168 |
| North America | +0.12 (+0.05 to +0.18) | +0.21 (+0.15 to +0.27) | -0.09 (-0.12 to -0.07) | Minimum | 2,498 |
| Oceania | +0.18 (+0.14 to +0.22) | +0.14 (+0.12 to +0.18) | +0.03 (0.00 to +0.07) | Maximum | 134 |
Countries
22 with long-record stationsOf 26 continents and countries with both trends, the daily minimum rose faster in 13 and the daily maximum rose faster in 12, with 1 equal.
| Place | Daily maximum, per decade (C) | Daily minimum, per decade (C) | Day-night range, per decade (C) | Faster | Stations |
|---|---|---|---|---|---|
| Australia | +0.20 (+0.15 to +0.24) | +0.14 (+0.10 to +0.17) | +0.06 (+0.02 to +0.10) | Maximum | 127 |
| Austria | +0.47 (+0.38 to +0.56) | +0.33 (+0.26 to +0.41) | +0.14 (+0.10 to +0.18) | Maximum | 6 |
| China | +0.24 (+0.12 to +0.35) | +0.28 (+0.21 to +0.35) | -0.04 (-0.17 to +0.09) | Minimum | 159 |
| Croatia | +0.33 (+0.24 to +0.42) | +0.24 (+0.15 to +0.32) | +0.09 (+0.06 to +0.13) | Maximum | 13 |
| Estonia | +0.37 (+0.27 to +0.47) | +0.38 (+0.26 to +0.50) | -0.01 (-0.06 to +0.03) | Minimum | 16 |
| Finland | +0.37 (+0.24 to +0.51) | +0.41 (+0.26 to +0.56) | -0.04 (-0.08 to +0.01) | Minimum | 68 |
| France | +0.33 (+0.25 to +0.41) | +0.30 (+0.24 to +0.36) | +0.03 (-0.01 to +0.07) | Maximum | 40 |
| Germany | +0.36 (+0.26 to +0.46) | +0.25 (+0.17 to +0.33) | +0.11 (+0.06 to +0.17) | Maximum | 244 |
| Hungary | +0.31 (+0.19 to +0.42) | +0.25 (+0.15 to +0.35) | +0.06 (+0.01 to +0.11) | Maximum | 5 |
| Netherlands | +0.36 (+0.27 to +0.46) | +0.27 (+0.18 to +0.35) | +0.10 (+0.05 to +0.14) | Maximum | 14 |
| Norway | +0.29 (+0.19 to +0.38) | +0.31 (+0.21 to +0.41) | -0.02 (-0.04 to 0.00) | Minimum | 55 |
| Puerto Rico [United States] | 0.00 (-0.07 to +0.08) | +0.26 (+0.19 to +0.33) | -0.26 (-0.35 to -0.17) | Minimum | 5 |
| Romania | +0.34 (+0.22 to +0.46) | +0.23 (+0.15 to +0.31) | +0.11 (+0.06 to +0.16) | Maximum | 20 |
| Russia | +0.29 (+0.22 to +0.37) | +0.36 (+0.29 to +0.43) | -0.07 (-0.09 to -0.05) | Minimum | 438 |
| Slovenia | +0.50 (+0.39 to +0.60) | +0.41 (+0.32 to +0.49) | +0.09 (+0.02 to +0.17) | Maximum | 11 |
| South Africa | 0.00 (-0.17 to +0.17) | -0.24 (-0.47 to -0.02) | +0.24 (+0.17 to +0.32) | Maximum | 6 |
| Spain | +0.28 (+0.21 to +0.35) | +0.28 (+0.21 to +0.34) | 0.00 (-0.03 to +0.04) | Same | 63 |
| Sweden | +0.31 (+0.20 to +0.42) | +0.32 (+0.21 to +0.44) | -0.01 (-0.05 to +0.03) | Minimum | 85 |
| Switzerland | +0.24 (+0.13 to +0.35) | +0.32 (+0.26 to +0.38) | -0.08 (-0.17 to +0.02) | Minimum | 8 |
| Thailand | +0.16 (+0.09 to +0.24) | +0.23 (+0.20 to +0.27) | -0.07 (-0.14 to 0.00) | Minimum | 6 |
| United Kingdom | +0.22 (+0.15 to +0.29) | +0.20 (+0.14 to +0.25) | +0.02 (0.00 to +0.04) | Maximum | 58 |
| United States | +0.12 (+0.06 to +0.18) | +0.21 (+0.16 to +0.27) | -0.09 (-0.12 to -0.06) | Minimum | 2,488 |
Each cell is the trend per decade in degrees Celsius with its 95 percent interval in brackets, for a fixed set of long-record stations. The column Faster names the series with the larger trend and does not say whether the difference is larger than the intervals; a place with few stations has wide intervals. The day-night range is the daily maximum minus the daily minimum.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17. Trends are computed by this site from daily station records.