Summer temperature anomalies in United States
United States: Summer temperature anomalies was 0.5014 °C in 2026. ◆ Volatile
Summer temperature anomalies in United States, 1940–2026
Source: Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data. Measured in °C.
Analysis
The most recent figure for summer temperature anomalies in United States is 0.5014 °C, measured in 2026.
That represents a change of down 37.5% on the previous year and down 62.1% over ten years.
Over the whole period, summer temperature anomalies in United States peaked at 1.76 °C in 2021 and was at its lowest, -2.96 °C, in 1945.
That places United States 122nd out of 193 countries with data for 2026, putting it in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Summer temperature anomalies in United States, year by year
| Year | °C | Change |
|---|---|---|
| 1940 | -0.8141 °C | — |
| 1941 | -1.83 °C | +124.8% |
| 1942 | -1.81 °C | -0.9% |
| 1943 | -1.04 °C | -42.6% |
| 1944 | -1.33 °C | +28.3% |
| 1945 | -2.96 °C | +121.4% |
| 1946 | -1.32 °C | -55.4% |
| 1947 | -2.59 °C | +96.0% |
| 1948 | -0.7795 °C | -69.9% |
| 1949 | -1.02 °C | +31.4% |
| 1950 | -1.19 °C | +16.0% |
| 1951 | -1.66 °C | +39.9% |
| 1952 | 0.1642 °C | -109.9% |
| 1953 | 0.2349 °C | +43.1% |
| 1954 | -0.6629 °C | -382.2% |
| 1955 | -2 °C | +202.0% |
| 1956 | -0.0708 °C | -96.5% |
| 1957 | -0.4976 °C | +603.3% |
| 1958 | -0.8341 °C | +67.6% |
| 1959 | 0.0442 °C | -105.3% |
| 1960 | -0.6301 °C | -1524.4% |
| 1961 | -0.4156 °C | -34.0% |
| 1962 | -1.24 °C | +197.7% |
| 1963 | -1.11 °C | -10.6% |
| 1964 | -1.05 °C | -5.0% |
| 1965 | -2.01 °C | +90.8% |
| 1966 | -0.9348 °C | -53.4% |
| 1967 | -1.37 °C | +46.6% |
| 1968 | -0.9281 °C | -32.3% |
| 1969 | -1.37 °C | +47.7% |
| 1970 | -0.7965 °C | -41.9% |
| 1971 | -0.2643 °C | -66.8% |
| 1972 | -1.11 °C | +320.5% |
| 1973 | -0.6905 °C | -37.9% |
| 1974 | -0.7933 °C | +14.9% |
| 1975 | -1.43 °C | +80.1% |
| 1976 | -1.18 °C | -17.6% |
| 1977 | 0.1109 °C | -109.4% |
| 1978 | -0.7208 °C | -750.0% |
| 1979 | -1 °C | +39.1% |
| 1980 | -0.6061 °C | -39.6% |
| 1981 | -0.0946 °C | -84.4% |
| 1982 | -1.77 °C | +1773.9% |
| 1983 | -1.27 °C | -28.6% |
| 1984 | -0.5506 °C | -56.5% |
| 1985 | -1.08 °C | +95.6% |
| 1986 | 0.1858 °C | -117.3% |
| 1987 | 0.1384 °C | -25.5% |
| 1988 | 0.6167 °C | +345.7% |
| 1989 | -0.8563 °C | -238.8% |
| 1990 | 0.4303 °C | -150.3% |
| 1991 | -0.1957 °C | -145.5% |
| 1992 | -1.06 °C | +441.8% |
| 1993 | -1.07 °C | +0.7% |
| 1994 | 0.4993 °C | -146.8% |
| 1995 | -1.17 °C | -334.4% |
| 1996 | -0.2283 °C | -80.5% |
| 1997 | -0.7142 °C | +212.8% |
| 1998 | -1 °C | +40.6% |
| 1999 | -0.7562 °C | -24.7% |
| 2000 | -0.4309 °C | -43.0% |
| 2001 | -0.3016 °C | -30.0% |
| 2002 | 0.4423 °C | -246.6% |
| 2003 | -0.8084 °C | -282.8% |
| 2004 | -0.3254 °C | -59.7% |
| 2005 | 0.0858 °C | -126.4% |
| 2006 | 0.5598 °C | +552.3% |
| 2007 | 0.402 °C | -28.2% |
| 2008 | -0.044 °C | -110.9% |
| 2009 | -0.5754 °C | +1208.4% |
| 2010 | 0.4414 °C | -176.7% |
| 2011 | 0.1491 °C | -66.2% |
| 2012 | 0.9468 °C | +534.9% |
| 2013 | 0.8372 °C | -11.6% |
| 2014 | -0.3346 °C | -140.0% |
| 2015 | 0.9787 °C | -392.5% |
| 2016 | 1.32 °C | +35.3% |
| 2017 | 0.681 °C | -48.6% |
| 2018 | 0.9665 °C | +41.9% |
| 2019 | 0.0586 °C | -93.9% |
| 2020 | 0.6439 °C | +999.3% |
| 2021 | 1.76 °C | +173.0% |
| 2022 | 1.04 °C | -40.7% |
| 2023 | -0.1791 °C | -117.2% |
| 2024 | 1.23 °C | -786.1% |
| 2025 | 0.8026 °C | -34.7% |
| 2026 | 0.5014 °C | -37.5% |
United States compared with similar countries
- United States's 0.5014 °C is below the median for high income countries, which is 1.13 °C, 44% of the median. (65 countries reporting)
Biggest year-on-year movements
Years where Summer temperature anomalies in United States changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1982 | -1773.9% | -0.0946 °C | -1.77 °C |
| 1960 | -1524.4% | 0.0442 °C | -0.6301 °C |
| 2009 | -1208.4% | -0.044 °C | -0.5754 °C |
| 2020 | +999.3% | 0.0586 °C | 0.6439 °C |
| 2024 | +786.1% | -0.1791 °C | 1.23 °C |
| 1978 | -750.0% | 0.1109 °C | -0.7208 °C |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1940s | -1.55 °C | -2.96 °C | -0.7795 °C | 10 |
| 1950s | -0.6474 °C | -2 °C | 0.2349 °C | 10 |
| 1960s | -1.11 °C | -2.01 °C | -0.4156 °C | 10 |
| 1970s | -0.7875 °C | -1.43 °C | 0.1109 °C | 10 |
| 1980s | -0.5282 °C | -1.77 °C | 0.6167 °C | 10 |
| 1990s | -0.5267 °C | -1.17 °C | 0.4993 °C | 10 |
| 2000s | -0.0996 °C | -0.8084 °C | 0.5598 °C | 10 |
| 2010s | 0.6049 °C | -0.3346 °C | 1.32 °C | 10 |
| 2020s | 0.8282 °C | -0.1791 °C | 1.76 °C | 7 |
Countries ranked near United States
More reference data data for United States
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 19.34 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 24.55 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 119.42 (2050)
- Emission Totals - Indirect emissions (N2O) - Crop Residues 20.7 (2050)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 119.42 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 64.85 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 52.14 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 133.45 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 589.96 (2050)
- Emission Totals - Emissions (N2O) - Crop Residues 112.69 (2050)
Frequently asked questions
- What is summer temperature anomalies in United States?
- Summer temperature anomalies in United States was 0.5014 °C in 2026, according to Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data.
- What is the highest summer temperature anomalies recorded in United States?
- The highest recorded value was 1.76 °C in 2021.
- What is the lowest summer temperature anomalies recorded in United States?
- The lowest recorded value was -2.96 °C in 1945.
- How does United States rank for summer temperature anomalies?
- United States ranks 122nd out of 193 countries with data for 2026.
- Is summer temperature anomalies rising or falling in United States?
- Over the last ten years it is down 62.1%. The long-run trend across the full record is volatile.
- Where does this United States data come from?
- The figures come from Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data, published as part of Summer temperature anomalies. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 87 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Difference in a specific month's average surface temperature from the mean temperature of the same month during the period 1991-2020, measured in degrees Celsius.