Cortez Weather Records (USC00051886)
Record envelope, standing records and threshold days for Cortez (USC00051886), Colorado, United States, with 116 years of record.
Key Facts for Cortez
- Cortez (USC00051886) is a weather station in Colorado, United States at 37.34 latitude and -108.59 longitude, 1,880 m (6,167 ft) above sea level.
- The station reports from 1911 to 2026, 116 years of record.
- 1,464 records set at Cortez still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Cortez set a daily record high minimum temperature of 11.1 C (52.0 F) on 12 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Colorado, United States, 37.34 latitude, -108.59 longitude.
- Elevation: 1,880 m (6,167 ft).
- Period of record: 1911 to 2026, 116 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
41 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 17.2 C (63.0 F) | -32.8 C (-27.0 F) | 14.4 C (57.9 F) | -15.0 C (5.0 F) |
| Feb | 26.1 C (79.0 F) | -35.0 C (-31.0 F) | 19.4 C (66.9 F) | -17.2 C (1.0 F) |
| Mar | 30.0 C (86.0 F) | -21.7 C (-7.1 F) | 30.0 C (86.0 F) | -7.8 C (18.0 F) |
| Apr | 31.1 C (88.0 F) | -14.4 C (6.1 F) | 26.1 C (79.0 F) | -7.2 C (19.0 F) |
| May | 35.0 C (95.0 F) | -9.4 C (15.1 F) | 33.3 C (91.9 F) | -3.3 C (26.1 F) |
| Jun | 38.9 C (102.0 F) | -2.8 C (27.0 F) | 36.1 C (97.0 F) | 6.7 C (44.1 F) |
| Jul | 38.9 C (102.0 F) | -0.6 C (30.9 F) | 38.9 C (102.0 F) | 7.8 C (46.0 F) |
| Aug | 38.9 C (102.0 F) | -1.1 C (30.0 F) | 38.9 C (102.0 F) | 10.6 C (51.1 F) |
| Sep | 37.2 C (99.0 F) | -5.0 C (23.0 F) | 33.3 C (91.9 F) | 7.2 C (45.0 F) |
| Oct | 32.2 C (90.0 F) | -13.9 C (7.0 F) | 28.3 C (82.9 F) | 6.7 C (44.1 F) |
| Nov | 23.9 C (75.0 F) | -25.6 C (-14.1 F) | n/a | n/a |
| Dec | 19.4 C (66.9 F) | -30.0 C (-22.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1911 | 4 |
| 1912 | 7 |
| 1913 | 20 |
| 1914 | 4 |
| 1915 | 39 |
| 1916 | 1 |
| 1929 | 8 |
| 1930 | 17 |
| 1931 | 30 |
| 1932 | 35 |
| 1933 | 23 |
| 1934 | 10 |
| 1935 | 9 |
| 1936 | 17 |
| 1937 | 20 |
| 1938 | 15 |
| 1939 | 20 |
| 1940 | 5 |
| 1941 | 8 |
| 1942 | 8 |
| 1943 | 27 |
| 1944 | 4 |
| 1945 | 11 |
| 1946 | 10 |
| 1947 | 14 |
| 1948 | 13 |
| 1949 | 13 |
| 1950 | 18 |
| 1951 | 15 |
| 1952 | 14 |
| 1953 | 10 |
| 1954 | 17 |
| 1955 | 17 |
| 1956 | 15 |
| 1957 | 13 |
| 1958 | 11 |
| 1959 | 11 |
| 1960 | 16 |
| 1961 | 12 |
| 1962 | 21 |
| 1963 | 18 |
| 1964 | 8 |
| 1965 | 17 |
| 1966 | 12 |
| 1967 | 12 |
| 1968 | 9 |
| 1969 | 12 |
| 1970 | 14 |
| 1971 | 25 |
| 1972 | 13 |
| 1973 | 7 |
| 1974 | 7 |
| 1975 | 14 |
| 1976 | 3 |
| 1978 | 18 |
| 1979 | 16 |
| 1980 | 12 |
| 1981 | 10 |
| 1982 | 14 |
| 1983 | 12 |
| 1984 | 15 |
| 1985 | 14 |
| 1986 | 16 |
| 1987 | 5 |
| 1988 | 8 |
| 1989 | 20 |
| 1990 | 16 |
| 1991 | 18 |
| 1992 | 9 |
| 1993 | 7 |
| 1994 | 7 |
| 1995 | 13 |
| 1996 | 15 |
| 1997 | 7 |
| 1998 | 11 |
| 1999 | 13 |
| 2000 | 22 |
| 2001 | 9 |
| 2002 | 12 |
| 2003 | 12 |
| 2004 | 7 |
| 2005 | 15 |
| 2006 | 23 |
| 2007 | 15 |
| 2008 | 9 |
| 2009 | 8 |
| 2010 | 9 |
| 2011 | 15 |
| 2012 | 13 |
| 2013 | 11 |
| 2014 | 16 |
| 2015 | 15 |
| 2016 | 17 |
| 2017 | 21 |
| 2018 | 12 |
| 2019 | 11 |
| 2020 | 29 |
| 2021 | 18 |
| 2022 | 15 |
| 2023 | 13 |
| 2024 | 21 |
| 2025 | 34 |
| 2026 | 33 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1963-01-12 | Record low maximum temperature | Record low maximum temperature -12.8 C (9.0 F) |
| 1967-12-20 | Record snow depth | Record snow depth 50.8 cm (20.0 in) |
| 1967-12-21 | Record snow depth | Record snow depth 53.3 cm (21.0 in) |
| 1971-07-13 | Record high maximum temperature | Record high maximum temperature 38.3 C (100.9 F) |
| 2003-07-15 | Record high maximum temperature | Record high maximum temperature 38.9 C (102.0 F) |
| 2003-09-10 | Record daily precipitation | Record daily precipitation 65.0 mm (2.6 in) |
Wettest Day of Each Month
Sep: 65.0 mm (2.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 30.2 mm (1.2 in) | 27 January 2013 |
| Feb | 30.5 mm (1.2 in) | 3 February 1916 |
| Mar | 38.1 mm (1.5 in) | 6 March 1995 |
| Apr | 32.0 mm (1.3 in) | 28 April 1952 |
| May | 30.2 mm (1.2 in) | 8 May 1957 |
| Jun | 33.8 mm (1.3 in) | 18 June 1949 |
| Jul | 41.7 mm (1.6 in) | 17 July 2018 |
| Aug | 46.2 mm (1.8 in) | 14 August 1955 |
| Sep | 65.0 mm (2.6 in) | 10 September 2003 |
| Oct | 50.8 mm (2.0 in) | 3 October 1913 |
| Nov | 41.1 mm (1.6 in) | 16 November 1964 |
| Dec | 29.7 mm (1.2 in) | 11 December 1954 |
Period of Record Coverage
1911 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1911 | 53 | 15% | No |
| 1912 | 30 | 8% | No |
| 1913 | 327 | 90% | No |
| 1914 | 353 | 97% | Yes |
| 1915 | 178 | 49% | No |
| 1916 | 60 | 16% | No |
| 1929 | 153 | 42% | No |
| 1930 | 365 | 100% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 352 | 96% | Yes |
| 1934 | 362 | 99% | Yes |
| 1935 | 361 | 99% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 364 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 364 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 364 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 365 | 100% | Yes |
| 1949 | 364 | 100% | Yes |
| 1950 | 360 | 99% | Yes |
| 1951 | 359 | 98% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 365 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 363 | 99% | Yes |
| 1963 | 364 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 365 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 357 | 98% | Yes |
| 1975 | 288 | 79% | No |
| 1976 | 89 | 24% | No |
| 1977 | 61 | 17% | No |
| 1978 | 363 | 99% | Yes |
| 1979 | 332 | 91% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 334 | 92% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 335 | 92% | Yes |
| 1985 | 332 | 91% | Yes |
| 1986 | 303 | 83% | No |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 363 | 99% | Yes |
| 1990 | 364 | 100% | Yes |
| 1991 | 362 | 99% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 362 | 99% | Yes |
| 1996 | 345 | 94% | Yes |
| 1997 | 276 | 76% | No |
| 1998 | 346 | 95% | Yes |
| 1999 | 348 | 95% | Yes |
| 2000 | 358 | 98% | Yes |
| 2001 | 356 | 98% | Yes |
| 2002 | 359 | 98% | Yes |
| 2003 | 362 | 99% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 335 | 92% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 363 | 99% | Yes |
| 2009 | 331 | 91% | Yes |
| 2010 | 353 | 97% | Yes |
| 2011 | 360 | 99% | Yes |
| 2012 | 362 | 99% | Yes |
| 2013 | 360 | 99% | Yes |
| 2014 | 361 | 99% | Yes |
| 2015 | 359 | 98% | Yes |
| 2016 | 360 | 98% | Yes |
| 2017 | 350 | 96% | Yes |
| 2018 | 360 | 99% | Yes |
| 2019 | 360 | 99% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 361 | 99% | Yes |
| 2023 | 358 | 98% | Yes |
| 2024 | 365 | 100% | Yes |
| 2025 | 354 | 97% | Yes |
| 2026 | 281 | 77% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 12 October 2026 | Cortez, US | daily high min (Provisional) | 11.1 C (52.0 F) | 1.1 C (2.0 F) | 69 years | 32 of 100 (Routine) |
| 9 October 2026 | Cortez, US | daily high max (Tie, Provisional) | 28.3 C (82.9 F) | tie | 1 year | 2 of 100 (Routine) |
| 8 October 2026 | Cortez, US | daily high max (Tie, Provisional) | 28.3 C (82.9 F) | tie | 5 years | 2 of 100 (Routine) |
| 25 September 2026 | Cortez, US | daily rain (Provisional) | 20.6 mm (0.8 in) | 0.5 mm (0.02 in) | 91 years | 20 of 100 (Routine) |
| 23 September 2026 | Cortez, US | daily high min (Provisional) | 13.9 C (57.0 F) | 0.6 C (1.1 F) | 68 years | 31 of 100 (Routine) |
| 17 September 2026 | Cortez, US | daily high min (Tie, Provisional) | 14.4 C (57.9 F) | tie | 95 years | 9 of 100 (Routine) |
| 14 September 2026 | Cortez, US | daily high min (Provisional) | 16.1 C (61.0 F) | 2.8 C (5.0 F) | 4 years | 18 of 100 (Routine) |
| 14 September 2026 | Cortez, US | daily high max (Tie, Provisional) | 32.2 C (90.0 F) | tie | 36 years | 5 of 100 (Routine) |
| 13 September 2026 | Cortez, US | daily high max (Tie, Provisional) | 32.2 C (90.0 F) | tie | 11 years | 3 of 100 (Routine) |
| 29 August 2026 | Cortez, US | daily high min (Provisional) | 18.3 C (64.9 F) | 0.5 C (0.9 F) | 5 years | 12 of 100 (Routine) |
| 28 August 2026 | Cortez, US | daily high max (Provisional) | 36.1 C (97.0 F) | 1.7 C (3.1 F) | 5 years | 17 of 100 (Routine) |
| 27 August 2026 | Cortez, US | daily high max (Provisional) | 36.1 C (97.0 F) | 1.7 C (3.1 F) | 7 years | 18 of 100 (Routine) |
| 21 August 2026 | Cortez, US | daily high max (Tie, Provisional) | 36.7 C (98.1 F) | tie | 5 years | 2 of 100 (Routine) |
| 19 August 2026 | Cortez, US | daily high max (Tie, Provisional) | 36.1 C (97.0 F) | tie | 5 years | 2 of 100 (Routine) |
| 12 August 2026 | Cortez, US | daily high max | 36.7 C (98.1 F) | 1.1 C (2.0 F) | 23 years | 19 of 100 (Routine) |
| 12 August 2026 | Cortez, US | daily high min (Tie) | 18.9 C (66.0 F) | tie | 12 years | 3 of 100 (Routine) |
| 11 August 2026 | Cortez, US | daily high min | 18.3 C (64.9 F) | 0.5 C (0.9 F) | 64 years | 30 of 100 (Routine) |
| 11 August 2026 | Cortez, US | daily high max | 36.7 C (98.1 F) | 0.6 C (1.1 F) | 23 years | 18 of 100 (Routine) |
| 10 August 2026 | Cortez, US | daily high max | 36.7 C (98.1 F) | 1.7 C (3.1 F) | 88 years | 42 of 100 (Notable) |
| 9 August 2026 | Cortez, US | all-time high max (Tie) | 38.9 C (102.0 F) | tie | 23 years | 9 of 100 (Routine) |
Climate Trend
85 complete years, 1914 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1914 | 8.4 C | -1.27 C |
| 1930 | 8.3 C | -1.41 C |
| 1931 | 8.6 C | -1.12 C |
| 1932 | 8.2 C | -1.51 C |
| 1933 | 8.0 C | -1.67 C |
| 1934 | 10.2 C | +0.55 C |
| 1935 | 9.1 C | -0.61 C |
| 1936 | 9.3 C | -0.38 C |
| 1937 | 8.6 C | -1.12 C |
| 1938 | 9.1 C | -0.58 C |
| 1939 | 9.1 C | -0.56 C |
| 1940 | 9.6 C | -0.11 C |
| 1941 | 8.9 C | -0.77 C |
| 1942 | 9.2 C | -0.45 C |
| 1943 | 10.8 C | +1.11 C |
| 1944 | 9.2 C | -0.43 C |
| 1945 | 9.1 C | -0.58 C |
| 1947 | 9.5 C | -0.17 C |
| 1948 | 9.2 C | -0.48 C |
| 1949 | 9.1 C | -0.59 C |
| 1950 | 10.1 C | +0.39 C |
| 1951 | 9.4 C | -0.27 C |
| 1952 | 9.4 C | -0.30 C |
| 1953 | 9.8 C | +0.10 C |
| 1954 | 10.8 C | +1.10 C |
| 1955 | 8.9 C | -0.76 C |
| 1956 | 9.4 C | -0.24 C |
| 1957 | 9.4 C | -0.31 C |
| 1958 | 10.2 C | +0.51 C |
| 1959 | 10.2 C | +0.55 C |
| 1960 | 9.3 C | -0.33 C |
| 1961 | 9.3 C | -0.42 C |
| 1962 | 9.8 C | +0.11 C |
| 1963 | 9.8 C | +0.12 C |
| 1964 | 8.6 C | -1.09 C |
| 1965 | 9.0 C | -0.65 C |
| 1966 | 9.7 C | -0.02 C |
| 1967 | 9.4 C | -0.26 C |
| 1968 | 8.7 C | -1.01 C |
| 1969 | 9.7 C | +0.07 C |
| 1970 | 9.3 C | -0.42 C |
| 1971 | 9.0 C | -0.72 C |
| 1972 | 9.9 C | +0.22 C |
| 1973 | 8.5 C | -1.17 C |
| 1974 | 9.2 C | -0.50 C |
| 1978 | 8.8 C | -0.87 C |
| 1980 | 9.2 C | -0.49 C |
| 1981 | 9.8 C | +0.08 C |
| 1983 | 8.4 C | -1.26 C |
| 1987 | 8.6 C | -1.05 C |
| 1988 | 8.5 C | -1.22 C |
| 1989 | 8.8 C | -0.88 C |
| 1990 | 8.8 C | -0.90 C |
| 1991 | 7.8 C | -1.83 C |
| 1992 | 8.6 C | -1.06 C |
| 1993 | 8.8 C | -0.91 C |
| 1994 | 9.7 C | +0.03 C |
| 1995 | 9.5 C | -0.22 C |
| 1996 | 9.7 C | +0.02 C |
| 1998 | 10.3 C | +0.66 C |
| 1999 | 10.3 C | +0.63 C |
| 2000 | 10.9 C | +1.27 C |
| 2001 | 10.8 C | +1.12 C |
| 2002 | 10.4 C | +0.74 C |
| 2003 | 11.1 C | +1.45 C |
| 2004 | 10.1 C | +0.43 C |
| 2006 | 10.7 C | +1.01 C |
| 2007 | 10.8 C | +1.16 C |
| 2008 | 9.5 C | -0.13 C |
| 2010 | 10.0 C | +0.29 C |
| 2011 | 10.0 C | +0.30 C |
| 2012 | 11.5 C | +1.81 C |
| 2013 | 10.0 C | +0.35 C |
| 2014 | 11.1 C | +1.42 C |
| 2015 | 11.1 C | +1.42 C |
| 2016 | 10.9 C | +1.19 C |
| 2017 | 11.6 C | +1.89 C |
| 2018 | 11.3 C | +1.60 C |
| 2019 | 10.0 C | +0.36 C |
| 2020 | 11.2 C | +1.49 C |
| 2021 | 11.1 C | +1.43 C |
| 2022 | 11.0 C | +1.31 C |
| 2023 | 10.5 C | +0.81 C |
| 2024 | 11.8 C | +2.08 C |
| 2025 | 12.0 C | +2.29 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1914 to 2025. In Fahrenheit: 0.4 F (0.3 to 0.5) per decade. The slope is a straight line fitted to 85 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.2 C (0.1 to 0.3) per decade | 0.4 F (0.3 to 0.5) per decade | 1914 to 2025 | 85 | Rise |
| Mean daily maximum | 0.1 C (0.1 to 0.2) per decade | 0.2 F (0.1 to 0.3) per decade | 1914 to 2025 | 85 | Rise |
| Mean daily minimum | 0.3 C (0.2 to 0.3) per decade | 0.5 F (0.4 to 0.6) per decade | 1914 to 2025 | 85 | Rise |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1911 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 38.9 C (102.0 F) | 2003 | 35.6 C (96.1 F) | 104 |
| Coldest night (TNn) | -35.0 C (-31.0 F) | 1933 | -22.2 C (-8.0 F) | 104 |
| Wettest day (Rx1day) | 65.0 mm (2.6 in) | 2003 | 26.6 mm (1.0 in) | 104 |
| Wettest five days (Rx5day) | 88.5 mm (3.5 in) | 1995 | 41.0 mm (1.6 in) | 104 |
| Longest dry spell (CDD) | 106 days | 1913 | 39 days | 104 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1911 | 35.0 C (95.0 F) |
| 1912 | 33.3 C (91.9 F) |
| 1913 | 35.6 C (96.1 F) |
| 1914 | 33.3 C (91.9 F) |
| 1915 | 33.3 C (91.9 F) |
| 1916 | 20.0 C (68.0 F) |
| 1929 | 32.2 C (90.0 F) |
| 1930 | 34.4 C (93.9 F) |
| 1931 | 37.8 C (100.0 F) |
| 1932 | 35.0 C (95.0 F) |
| 1933 | 35.0 C (95.0 F) |
| 1934 | 36.1 C (97.0 F) |
| 1935 | 35.6 C (96.1 F) |
| 1936 | 36.7 C (98.1 F) |
| 1937 | 36.1 C (97.0 F) |
| 1938 | 36.1 C (97.0 F) |
| 1939 | 36.7 C (98.1 F) |
| 1940 | 36.1 C (97.0 F) |
| 1941 | 33.9 C (93.0 F) |
| 1942 | 35.0 C (95.0 F) |
| 1943 | 36.7 C (98.1 F) |
| 1944 | 35.0 C (95.0 F) |
| 1945 | 35.0 C (95.0 F) |
| 1946 | 35.6 C (96.1 F) |
| 1947 | 36.1 C (97.0 F) |
| 1948 | 35.6 C (96.1 F) |
| 1949 | 35.6 C (96.1 F) |
| 1950 | 35.0 C (95.0 F) |
| 1951 | 37.2 C (99.0 F) |
| 1952 | 35.0 C (95.0 F) |
| 1953 | 35.6 C (96.1 F) |
| 1954 | 37.8 C (100.0 F) |
| 1955 | 35.0 C (95.0 F) |
| 1956 | 35.0 C (95.0 F) |
| 1957 | 33.9 C (93.0 F) |
| 1958 | 35.6 C (96.1 F) |
| 1959 | 35.6 C (96.1 F) |
| 1960 | 36.1 C (97.0 F) |
| 1961 | 35.6 C (96.1 F) |
| 1962 | 37.2 C (99.0 F) |
| 1963 | 35.0 C (95.0 F) |
| 1964 | 34.4 C (93.9 F) |
| 1965 | 33.3 C (91.9 F) |
| 1966 | 35.0 C (95.0 F) |
| 1967 | 33.9 C (93.0 F) |
| 1968 | 35.0 C (95.0 F) |
| 1969 | 36.7 C (98.1 F) |
| 1970 | 37.2 C (99.0 F) |
| 1971 | 38.3 C (100.9 F) |
| 1972 | 36.1 C (97.0 F) |
| 1973 | 36.1 C (97.0 F) |
| 1974 | 35.0 C (95.0 F) |
| 1975 | 33.9 C (93.0 F) |
| 1976 | 18.3 C (64.9 F) |
| 1977 | 20.0 C (68.0 F) |
| 1978 | 35.0 C (95.0 F) |
| 1979 | 35.6 C (96.1 F) |
| 1980 | 35.6 C (96.1 F) |
| 1981 | 35.6 C (96.1 F) |
| 1982 | 32.2 C (90.0 F) |
| 1983 | 32.8 C (91.0 F) |
| 1984 | 34.4 C (93.9 F) |
| 1985 | 33.9 C (93.0 F) |
| 1986 | 34.4 C (93.9 F) |
| 1987 | 35.0 C (95.0 F) |
| 1988 | 35.0 C (95.0 F) |
| 1989 | 36.7 C (98.1 F) |
| 1990 | 37.2 C (99.0 F) |
| 1991 | 35.0 C (95.0 F) |
| 1992 | 33.9 C (93.0 F) |
| 1993 | 35.0 C (95.0 F) |
| 1994 | 35.6 C (96.1 F) |
| 1995 | 36.7 C (98.1 F) |
| 1996 | 36.7 C (98.1 F) |
| 1997 | 36.1 C (97.0 F) |
| 1998 | 36.7 C (98.1 F) |
| 1999 | 35.0 C (95.0 F) |
| 2000 | 36.7 C (98.1 F) |
| 2001 | 36.1 C (97.0 F) |
| 2002 | 37.8 C (100.0 F) |
| 2003 | 38.9 C (102.0 F) |
| 2004 | 36.7 C (98.1 F) |
| 2005 | 38.9 C (102.0 F) |
| 2006 | 37.8 C (100.0 F) |
| 2007 | 37.8 C (100.0 F) |
| 2008 | 36.1 C (97.0 F) |
| 2009 | 36.7 C (98.1 F) |
| 2010 | 37.8 C (100.0 F) |
| 2011 | 37.2 C (99.0 F) |
| 2012 | 36.7 C (98.1 F) |
| 2013 | 38.9 C (102.0 F) |
| 2014 | 37.2 C (99.0 F) |
| 2015 | 36.1 C (97.0 F) |
| 2016 | 38.3 C (100.9 F) |
| 2017 | 38.9 C (102.0 F) |
| 2018 | 36.7 C (98.1 F) |
| 2019 | 36.1 C (97.0 F) |
| 2020 | 37.8 C (100.0 F) |
| 2021 | 38.9 C (102.0 F) |
| 2022 | 38.9 C (102.0 F) |
| 2023 | 38.3 C (100.9 F) |
| 2024 | 37.8 C (100.0 F) |
| 2025 | 37.8 C (100.0 F) |
| 2026 | 38.9 C (102.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1911 | -12.2 C (10.0 F) |
| 1912 | -7.2 C (19.0 F) |
| 1913 | -22.2 C (-8.0 F) |
| 1914 | -23.3 C (-9.9 F) |
| 1915 | -27.2 C (-17.0 F) |
| 1916 | -16.1 C (3.0 F) |
| 1929 | -18.3 C (-0.9 F) |
| 1930 | -29.4 C (-20.9 F) |
| 1931 | -27.8 C (-18.0 F) |
| 1932 | -28.9 C (-20.0 F) |
| 1933 | -35.0 C (-31.0 F) |
| 1934 | -17.8 C (0.0 F) |
| 1935 | -24.4 C (-11.9 F) |
| 1936 | -19.4 C (-2.9 F) |
| 1937 | -32.8 C (-27.0 F) |
| 1938 | -19.4 C (-2.9 F) |
| 1939 | -25.0 C (-13.0 F) |
| 1940 | -25.0 C (-13.0 F) |
| 1941 | -21.1 C (-6.0 F) |
| 1942 | -27.8 C (-18.0 F) |
| 1943 | -27.8 C (-18.0 F) |
| 1944 | -20.6 C (-5.1 F) |
| 1945 | -25.0 C (-13.0 F) |
| 1946 | -20.6 C (-5.1 F) |
| 1947 | -25.6 C (-14.1 F) |
| 1948 | -26.7 C (-16.1 F) |
| 1949 | -30.6 C (-23.1 F) |
| 1950 | -21.1 C (-6.0 F) |
| 1951 | -26.1 C (-15.0 F) |
| 1952 | -22.2 C (-8.0 F) |
| 1953 | -20.6 C (-5.1 F) |
| 1954 | -19.4 C (-2.9 F) |
| 1955 | -24.4 C (-11.9 F) |
| 1956 | -22.2 C (-8.0 F) |
| 1957 | -19.4 C (-2.9 F) |
| 1958 | -22.2 C (-8.0 F) |
| 1959 | -20.0 C (-4.0 F) |
| 1960 | -25.0 C (-13.0 F) |
| 1961 | -26.7 C (-16.1 F) |
| 1962 | -23.3 C (-9.9 F) |
| 1963 | -32.8 C (-27.0 F) |
| 1964 | -25.0 C (-13.0 F) |
| 1965 | -23.3 C (-9.9 F) |
| 1966 | -25.0 C (-13.0 F) |
| 1967 | -23.9 C (-11.0 F) |
| 1968 | -26.1 C (-15.0 F) |
| 1969 | -19.4 C (-2.9 F) |
| 1970 | -18.3 C (-0.9 F) |
| 1971 | -28.9 C (-20.0 F) |
| 1972 | -21.1 C (-6.0 F) |
| 1973 | -21.7 C (-7.1 F) |
| 1974 | -25.0 C (-13.0 F) |
| 1975 | -23.3 C (-9.9 F) |
| 1976 | -26.7 C (-16.1 F) |
| 1977 | -16.7 C (1.9 F) |
| 1978 | -30.0 C (-22.0 F) |
| 1979 | -27.2 C (-17.0 F) |
| 1980 | -16.1 C (3.0 F) |
| 1981 | -17.8 C (0.0 F) |
| 1982 | -26.7 C (-16.1 F) |
| 1983 | -17.8 C (0.0 F) |
| 1984 | -28.3 C (-18.9 F) |
| 1985 | -28.9 C (-20.0 F) |
| 1986 | -17.2 C (1.0 F) |
| 1987 | -22.8 C (-9.0 F) |
| 1988 | -21.1 C (-6.0 F) |
| 1989 | -30.0 C (-22.0 F) |
| 1990 | -28.9 C (-20.0 F) |
| 1991 | -23.9 C (-11.0 F) |
| 1992 | -23.3 C (-9.9 F) |
| 1993 | -17.8 C (0.0 F) |
| 1994 | -21.7 C (-7.1 F) |
| 1995 | -17.8 C (0.0 F) |
| 1996 | -17.8 C (0.0 F) |
| 1997 | -23.3 C (-9.9 F) |
| 1998 | -16.7 C (1.9 F) |
| 1999 | -15.0 C (5.0 F) |
| 2000 | -18.9 C (-2.0 F) |
| 2001 | -17.8 C (0.0 F) |
| 2002 | -17.2 C (1.0 F) |
| 2003 | -22.8 C (-9.0 F) |
| 2004 | -19.4 C (-2.9 F) |
| 2005 | -18.9 C (-2.0 F) |
| 2006 | -17.2 C (1.0 F) |
| 2007 | -23.3 C (-9.9 F) |
| 2008 | -22.8 C (-9.0 F) |
| 2009 | -20.6 C (-5.1 F) |
| 2010 | -19.4 C (-2.9 F) |
| 2011 | -27.8 C (-18.0 F) |
| 2012 | -19.4 C (-2.9 F) |
| 2013 | -24.4 C (-11.9 F) |
| 2014 | -17.2 C (1.0 F) |
| 2015 | -21.7 C (-7.1 F) |
| 2016 | -20.0 C (-4.0 F) |
| 2017 | -22.2 C (-8.0 F) |
| 2018 | -17.2 C (1.0 F) |
| 2019 | -22.8 C (-9.0 F) |
| 2020 | -16.7 C (1.9 F) |
| 2021 | -16.7 C (1.9 F) |
| 2022 | -16.1 C (3.0 F) |
| 2023 | -21.1 C (-6.0 F) |
| 2024 | -20.6 C (-5.1 F) |
| 2025 | -18.3 C (-0.9 F) |
| 2026 | -17.2 C (1.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1911 | 38.9 mm (1.5 in) |
| 1912 | 0.0 mm (0.00 in) |
| 1913 | 50.8 mm (2.0 in) |
| 1914 | 33.0 mm (1.3 in) |
| 1915 | 27.9 mm (1.1 in) |
| 1916 | 30.5 mm (1.2 in) |
| 1929 | 32.3 mm (1.3 in) |
| 1930 | 22.9 mm (0.9 in) |
| 1931 | 26.9 mm (1.1 in) |
| 1932 | 20.3 mm (0.8 in) |
| 1933 | 26.4 mm (1.0 in) |
| 1934 | 31.8 mm (1.3 in) |
| 1935 | 20.1 mm (0.8 in) |
| 1936 | 19.1 mm (0.8 in) |
| 1937 | 27.9 mm (1.1 in) |
| 1938 | 26.9 mm (1.1 in) |
| 1939 | 27.4 mm (1.1 in) |
| 1940 | 30.2 mm (1.2 in) |
| 1941 | 49.8 mm (2.0 in) |
| 1942 | 28.7 mm (1.1 in) |
| 1943 | 27.2 mm (1.1 in) |
| 1944 | 31.2 mm (1.2 in) |
| 1945 | 20.8 mm (0.8 in) |
| 1946 | 16.5 mm (0.6 in) |
| 1947 | 36.8 mm (1.4 in) |
| 1948 | 21.6 mm (0.9 in) |
| 1949 | 33.8 mm (1.3 in) |
| 1950 | 10.9 mm (0.4 in) |
| 1951 | 26.7 mm (1.1 in) |
| 1952 | 32.0 mm (1.3 in) |
| 1953 | 28.7 mm (1.1 in) |
| 1954 | 30.2 mm (1.2 in) |
| 1955 | 46.2 mm (1.8 in) |
| 1956 | 26.4 mm (1.0 in) |
| 1957 | 34.5 mm (1.4 in) |
| 1958 | 17.5 mm (0.7 in) |
| 1959 | 36.3 mm (1.4 in) |
| 1960 | 17.5 mm (0.7 in) |
| 1961 | 22.1 mm (0.9 in) |
| 1962 | 29.2 mm (1.1 in) |
| 1963 | 31.0 mm (1.2 in) |
| 1964 | 41.1 mm (1.6 in) |
| 1965 | 32.3 mm (1.3 in) |
| 1966 | 24.4 mm (1.0 in) |
| 1967 | 14.5 mm (0.6 in) |
| 1968 | 22.4 mm (0.9 in) |
| 1969 | 34.3 mm (1.4 in) |
| 1970 | 23.9 mm (0.9 in) |
| 1971 | 26.4 mm (1.0 in) |
| 1972 | 25.1 mm (1.0 in) |
| 1973 | 21.6 mm (0.9 in) |
| 1974 | 22.6 mm (0.9 in) |
| 1975 | 19.1 mm (0.8 in) |
| 1976 | 19.6 mm (0.8 in) |
| 1977 | 13.7 mm (0.5 in) |
| 1978 | 29.2 mm (1.1 in) |
| 1979 | 27.2 mm (1.1 in) |
| 1980 | 18.8 mm (0.7 in) |
| 1981 | 31.8 mm (1.3 in) |
| 1982 | 35.6 mm (1.4 in) |
| 1983 | 35.3 mm (1.4 in) |
| 1984 | 18.3 mm (0.7 in) |
| 1985 | 26.2 mm (1.0 in) |
| 1986 | 27.9 mm (1.1 in) |
| 1987 | 22.6 mm (0.9 in) |
| 1988 | 28.4 mm (1.1 in) |
| 1989 | 17.0 mm (0.7 in) |
| 1990 | 22.9 mm (0.9 in) |
| 1991 | 27.9 mm (1.1 in) |
| 1992 | 25.9 mm (1.0 in) |
| 1993 | 24.1 mm (0.9 in) |
| 1994 | 16.5 mm (0.6 in) |
| 1995 | 38.1 mm (1.5 in) |
| 1996 | 34.8 mm (1.4 in) |
| 1997 | 16.8 mm (0.7 in) |
| 1998 | 30.0 mm (1.2 in) |
| 1999 | 15.7 mm (0.6 in) |
| 2000 | 12.7 mm (0.5 in) |
| 2001 | 22.9 mm (0.9 in) |
| 2002 | 25.1 mm (1.0 in) |
| 2003 | 65.0 mm (2.6 in) |
| 2004 | 24.1 mm (0.9 in) |
| 2005 | 21.8 mm (0.9 in) |
| 2006 | 46.2 mm (1.8 in) |
| 2007 | 32.5 mm (1.3 in) |
| 2008 | 27.2 mm (1.1 in) |
| 2009 | 17.3 mm (0.7 in) |
| 2010 | 33.8 mm (1.3 in) |
| 2011 | 27.7 mm (1.1 in) |
| 2012 | 19.6 mm (0.8 in) |
| 2013 | 44.7 mm (1.8 in) |
| 2014 | 21.3 mm (0.8 in) |
| 2015 | 28.7 mm (1.1 in) |
| 2016 | 21.1 mm (0.8 in) |
| 2017 | 23.4 mm (0.9 in) |
| 2018 | 41.7 mm (1.6 in) |
| 2019 | 28.4 mm (1.1 in) |
| 2020 | 19.8 mm (0.8 in) |
| 2021 | 25.9 mm (1.0 in) |
| 2022 | 20.1 mm (0.8 in) |
| 2023 | 39.1 mm (1.5 in) |
| 2024 | 20.3 mm (0.8 in) |
| 2025 | 25.7 mm (1.0 in) |
| 2026 | 24.9 mm (1.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1911 | 81.0 mm (3.2 in) |
| 1912 | 0.0 mm (0.00 in) |
| 1913 | 63.5 mm (2.5 in) |
| 1914 | 45.7 mm (1.8 in) |
| 1915 | 49.0 mm (1.9 in) |
| 1916 | 40.6 mm (1.6 in) |
| 1929 | 36.9 mm (1.5 in) |
| 1930 | 34.1 mm (1.3 in) |
| 1931 | 37.6 mm (1.5 in) |
| 1932 | 35.8 mm (1.4 in) |
| 1933 | 39.1 mm (1.5 in) |
| 1934 | 42.7 mm (1.7 in) |
| 1935 | 34.6 mm (1.4 in) |
| 1936 | 35.8 mm (1.4 in) |
| 1937 | 45.2 mm (1.8 in) |
| 1938 | 54.2 mm (2.1 in) |
| 1939 | 30.4 mm (1.2 in) |
| 1940 | 46.7 mm (1.8 in) |
| 1941 | 67.1 mm (2.6 in) |
| 1942 | 33.3 mm (1.3 in) |
| 1943 | 36.8 mm (1.4 in) |
| 1944 | 45.4 mm (1.8 in) |
| 1945 | 42.2 mm (1.7 in) |
| 1946 | 23.1 mm (0.9 in) |
| 1947 | 60.4 mm (2.4 in) |
| 1948 | 32.8 mm (1.3 in) |
| 1949 | 40.4 mm (1.6 in) |
| 1950 | 17.3 mm (0.7 in) |
| 1951 | 42.2 mm (1.7 in) |
| 1952 | 43.5 mm (1.7 in) |
| 1953 | 57.4 mm (2.3 in) |
| 1954 | 31.0 mm (1.2 in) |
| 1955 | 71.4 mm (2.8 in) |
| 1956 | 31.8 mm (1.3 in) |
| 1957 | 68.6 mm (2.7 in) |
| 1958 | 20.3 mm (0.8 in) |
| 1959 | 49.5 mm (1.9 in) |
| 1960 | 35.8 mm (1.4 in) |
| 1961 | 30.5 mm (1.2 in) |
| 1962 | 64.4 mm (2.5 in) |
| 1963 | 43.0 mm (1.7 in) |
| 1964 | 44.2 mm (1.7 in) |
| 1965 | 71.6 mm (2.8 in) |
| 1966 | 53.0 mm (2.1 in) |
| 1967 | 41.5 mm (1.6 in) |
| 1968 | 34.8 mm (1.4 in) |
| 1969 | 37.4 mm (1.5 in) |
| 1970 | 42.2 mm (1.7 in) |
| 1971 | 29.7 mm (1.2 in) |
| 1972 | 73.8 mm (2.9 in) |
| 1973 | 31.3 mm (1.2 in) |
| 1974 | 39.1 mm (1.5 in) |
| 1975 | 33.7 mm (1.3 in) |
| 1976 | 43.0 mm (1.7 in) |
| 1977 | 16.1 mm (0.6 in) |
| 1978 | 54.4 mm (2.1 in) |
| 1979 | 32.5 mm (1.3 in) |
| 1980 | 57.7 mm (2.3 in) |
| 1981 | 36.2 mm (1.4 in) |
| 1982 | 49.1 mm (1.9 in) |
| 1983 | 36.1 mm (1.4 in) |
| 1984 | 35.3 mm (1.4 in) |
| 1985 | 45.7 mm (1.8 in) |
| 1986 | 52.0 mm (2.0 in) |
| 1987 | 49.3 mm (1.9 in) |
| 1988 | 45.4 mm (1.8 in) |
| 1989 | 20.8 mm (0.8 in) |
| 1990 | 41.9 mm (1.6 in) |
| 1991 | 38.1 mm (1.5 in) |
| 1992 | 43.6 mm (1.7 in) |
| 1993 | 48.0 mm (1.9 in) |
| 1994 | 26.6 mm (1.0 in) |
| 1995 | 88.5 mm (3.5 in) |
| 1996 | 60.2 mm (2.4 in) |
| 1997 | 31.0 mm (1.2 in) |
| 1998 | 57.2 mm (2.3 in) |
| 1999 | 32.2 mm (1.3 in) |
| 2000 | 23.4 mm (0.9 in) |
| 2001 | 31.5 mm (1.2 in) |
| 2002 | 49.8 mm (2.0 in) |
| 2003 | 68.6 mm (2.7 in) |
| 2004 | 34.5 mm (1.4 in) |
| 2005 | 35.8 mm (1.4 in) |
| 2006 | 46.7 mm (1.8 in) |
| 2007 | 36.6 mm (1.4 in) |
| 2008 | 42.3 mm (1.7 in) |
| 2009 | 19.9 mm (0.8 in) |
| 2010 | 43.2 mm (1.7 in) |
| 2011 | 52.1 mm (2.1 in) |
| 2012 | 20.8 mm (0.8 in) |
| 2013 | 51.0 mm (2.0 in) |
| 2014 | 25.9 mm (1.0 in) |
| 2015 | 37.6 mm (1.5 in) |
| 2016 | 39.7 mm (1.6 in) |
| 2017 | 40.6 mm (1.6 in) |
| 2018 | 44.7 mm (1.8 in) |
| 2019 | 43.2 mm (1.7 in) |
| 2020 | 35.0 mm (1.4 in) |
| 2021 | 32.7 mm (1.3 in) |
| 2022 | 34.0 mm (1.3 in) |
| 2023 | 56.4 mm (2.2 in) |
| 2024 | 41.4 mm (1.6 in) |
| 2025 | 37.9 mm (1.5 in) |
| 2026 | 52.9 mm (2.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1911 | 17 days |
| 1912 | 31 days |
| 1913 | 106 days |
| 1914 | 35 days |
| 1915 | 48 days |
| 1916 | 26 days |
| 1929 | 40 days |
| 1930 | 42 days |
| 1931 | 29 days |
| 1932 | 48 days |
| 1933 | 41 days |
| 1934 | 39 days |
| 1935 | 58 days |
| 1936 | 32 days |
| 1937 | 49 days |
| 1938 | 24 days |
| 1939 | 63 days |
| 1940 | 23 days |
| 1941 | 21 days |
| 1942 | 60 days |
| 1943 | 47 days |
| 1944 | 36 days |
| 1945 | 29 days |
| 1946 | 39 days |
| 1947 | 37 days |
| 1948 | 26 days |
| 1949 | 28 days |
| 1950 | 45 days |
| 1951 | 60 days |
| 1952 | 40 days |
| 1953 | 43 days |
| 1954 | 35 days |
| 1955 | 55 days |
| 1956 | 44 days |
| 1957 | 35 days |
| 1958 | 30 days |
| 1959 | 40 days |
| 1960 | 45 days |
| 1961 | 48 days |
| 1962 | 32 days |
| 1963 | 42 days |
| 1964 | 44 days |
| 1965 | 29 days |
| 1966 | 47 days |
| 1967 | 62 days |
| 1968 | 37 days |
| 1969 | 34 days |
| 1970 | 28 days |
| 1971 | 32 days |
| 1972 | 82 days |
| 1973 | 39 days |
| 1974 | 72 days |
| 1975 | 38 days |
| 1976 | 21 days |
| 1977 | 24 days |
| 1978 | 41 days |
| 1979 | 50 days |
| 1980 | 74 days |
| 1981 | 28 days |
| 1982 | 48 days |
| 1983 | 36 days |
| 1984 | 26 days |
| 1985 | 20 days |
| 1986 | 24 days |
| 1987 | 28 days |
| 1988 | 27 days |
| 1989 | 76 days |
| 1990 | 26 days |
| 1991 | 60 days |
| 1992 | 35 days |
| 1993 | 58 days |
| 1994 | 28 days |
| 1995 | 31 days |
| 1996 | 40 days |
| 1997 | 40 days |
| 1998 | 26 days |
| 1999 | 58 days |
| 2000 | 26 days |
| 2001 | 49 days |
| 2002 | 67 days |
| 2003 | 32 days |
| 2004 | 47 days |
| 2005 | 49 days |
| 2006 | 25 days |
| 2007 | 36 days |
| 2008 | 35 days |
| 2009 | 26 days |
| 2010 | 39 days |
| 2011 | 58 days |
| 2012 | 72 days |
| 2013 | 67 days |
| 2014 | 40 days |
| 2015 | 37 days |
| 2016 | 26 days |
| 2017 | 61 days |
| 2018 | 44 days |
| 2019 | 46 days |
| 2020 | 58 days |
| 2021 | 37 days |
| 2022 | 66 days |
| 2023 | 47 days |
| 2024 | 45 days |
| 2025 | 33 days |
| 2026 | 39 days |
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
85 years with a frostAcross 85 years with a frost, the median last spring frost at Cortez falls on 23 May and the median first autumn frost on 2 October, which leaves a median of 131 days between them.
In 1993 to 2025 the median growing season was 141 days. That is 19 days more than in 1914 to 1959.
Fitted over all years, the growing season changes by +2.5 days per decade at this station.
| Measure | Median, all years | Earliest period (1914 to 1959) | Recent period (1993 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 23 May | 30 May | 17 May | 13 days earlier | -1.3 days per decade |
| First autumn frost | 2 October | 2 October | 7 October | 5 days later | +1.2 days per decade |
| Growing days | 131 days | 122 days | 141 days | 19 days more | +2.5 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
94 years, 1913 to 2025A day with at least 26.1 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 55.4 mm (2.2 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 26.1 mm (1.0 in) | |
| 5 years | 33.9 mm (1.3 in) | |
| 10 years | 39.0 mm (1.5 in) | |
| 25 years | 45.6 mm (1.8 in) | |
| 50 years | 50.5 mm (2.0 in) | |
| 100 years | 55.4 mm (2.2 in) | Longer than the 94 years of record |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 94 years of values from 1913 to 2025.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 65.0 mm (2.6 in) in 2003; 50.8 mm (2.0 in) in 1913; 49.8 mm (2.0 in) in 1941.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Cortez, at 1983 and 1998. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1983 ran 0.5 C (0.9 F) lower than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1998 ran 1.0 C (1.7 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1983 | -0.5 | -0.9 | likely | 5 |
| 1998 | +1.0 | +1.7 | likely | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Climate Twins
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Cortez had a mean temperature of 11.0 C (51.8 F) and 295.3 mm (11.6 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Trinidad AP (United States, 377 km away), Tacony 13 SE (United States, 414 km away) and Navajo Dam (United States, 105 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Trinidad AP | United States | 377 km (234 mi) | 11.0 C (51.8 F) | 342.3 mm (13.5 in) | 0.64 |
| Tacony 13 SE | United States | 414 km (257 mi) | 10.9 C (51.6 F) | 263.3 mm (10.4 in) | 0.66 |
| Navajo Dam | United States | 105 km (65 mi) | 10.7 C (51.2 F) | 343.4 mm (13.5 in) | 0.66 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-15).