Hayward Rs Weather Records (USC00473511)
Record envelope, standing records and threshold days for Hayward Rs (USC00473511), Wisconsin, United States, with 134 years of record.
Key Facts for Hayward Rs
- Hayward Rs (USC00473511) is a weather station in Wisconsin, United States at 46.00 latitude and -91.51 longitude, 366 m (1,200 ft) above sea level.
- The station reports from 1893 to 2026, 134 years of record.
- 1,464 records set at Hayward Rs still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Hayward Rs set a daily record high maximum temperature of 28.9 C (84.0 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: Wisconsin, United States, 46.00 latitude, -91.51 longitude.
- Elevation: 366 m (1,200 ft).
- Period of record: 1893 to 2026, 134 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
9 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 13.3 C (55.9 F) | -42.8 C (-45.0 F) | 5.0 C (41.0 F) | -38.3 C (-36.9 F) |
| Feb | 15.6 C (60.1 F) | -46.7 C (-52.1 F) | 12.8 C (55.0 F) | -23.9 C (-11.0 F) |
| Mar | 26.1 C (79.0 F) | -40.0 C (-40.0 F) | 21.7 C (71.1 F) | -23.3 C (-9.9 F) |
| Apr | 31.7 C (89.1 F) | -21.1 C (-6.0 F) | 26.7 C (80.1 F) | -12.2 C (10.0 F) |
| May | 34.4 C (93.9 F) | -11.7 C (10.9 F) | 32.8 C (91.0 F) | -5.0 C (23.0 F) |
| Jun | 41.1 C (106.0 F) | -4.4 C (24.1 F) | 31.7 C (89.1 F) | 4.4 C (39.9 F) |
| Jul | 42.2 C (108.0 F) | 0.0 C (32.0 F) | 34.4 C (93.9 F) | 6.7 C (44.1 F) |
| Aug | 37.8 C (100.0 F) | -1.7 C (28.9 F) | 31.7 C (89.1 F) | 5.6 C (42.1 F) |
| Sep | 35.6 C (96.1 F) | -9.4 C (15.1 F) | 31.7 C (89.1 F) | 2.2 C (36.0 F) |
| Oct | 31.1 C (88.0 F) | -17.2 C (1.0 F) | 30.6 C (87.1 F) | -1.1 C (30.0 F) |
| Nov | 23.9 C (75.0 F) | -29.4 C (-20.9 F) | n/a | n/a |
| Dec | 15.6 C (60.1 F) | -41.1 C (-42.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1893 | 24 |
| 1894 | 34 |
| 1895 | 28 |
| 1896 | 35 |
| 1897 | 29 |
| 1898 | 12 |
| 1899 | 25 |
| 1900 | 28 |
| 1901 | 25 |
| 1902 | 12 |
| 1903 | 29 |
| 1904 | 22 |
| 1905 | 17 |
| 1906 | 15 |
| 1907 | 21 |
| 1908 | 9 |
| 1909 | 22 |
| 1910 | 29 |
| 1911 | 23 |
| 1912 | 29 |
| 1913 | 20 |
| 1914 | 14 |
| 1915 | 34 |
| 1916 | 16 |
| 1917 | 23 |
| 1918 | 20 |
| 1919 | 16 |
| 1920 | 15 |
| 1921 | 14 |
| 1922 | 11 |
| 1923 | 21 |
| 1924 | 2 |
| 1933 | 12 |
| 1934 | 25 |
| 1935 | 25 |
| 1936 | 34 |
| 1937 | 9 |
| 1938 | 14 |
| 1939 | 14 |
| 1940 | 24 |
| 1941 | 3 |
| 1942 | 2 |
| 1943 | 11 |
| 1944 | 1 |
| 1945 | 6 |
| 1946 | 5 |
| 1947 | 3 |
| 1948 | 6 |
| 1949 | 1 |
| 1966 | 10 |
| 1967 | 2 |
| 1970 | 1 |
| 1972 | 7 |
| 1973 | 3 |
| 1997 | 2 |
| 1998 | 28 |
| 1999 | 15 |
| 2000 | 31 |
| 2001 | 22 |
| 2002 | 18 |
| 2003 | 18 |
| 2004 | 20 |
| 2005 | 40 |
| 2006 | 25 |
| 2007 | 25 |
| 2008 | 11 |
| 2009 | 18 |
| 2010 | 22 |
| 2011 | 9 |
| 2012 | 26 |
| 2013 | 15 |
| 2014 | 17 |
| 2015 | 13 |
| 2016 | 13 |
| 2017 | 28 |
| 2018 | 13 |
| 2019 | 12 |
| 2020 | 20 |
| 2021 | 25 |
| 2022 | 11 |
| 2023 | 33 |
| 2024 | 19 |
| 2025 | 17 |
| 2026 | 6 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1934-06-01 | Record high maximum temperature | Record high maximum temperature 41.1 C (106.0 F) |
| 1936-02-16 | Record low minimum temperature | Record low minimum temperature -46.7 C (-52.1 F) |
| 1936-07-12 | Record high maximum temperature | Record high maximum temperature 42.2 C (108.0 F) |
| 1958-07-01 | Record daily precipitation | Record daily precipitation 139.7 mm (5.5 in) |
| 2005-09-05 | Record high minimum temperature | Record high minimum temperature 26.7 C (80.1 F) |
| 2005-09-11 | Record high minimum temperature | Record high minimum temperature 31.1 C (88.0 F) |
Wettest Day of Each Month
Jul: 139.7 mm (5.5 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 32.3 mm (1.3 in) | 18 January 1996 |
| Feb | 35.6 mm (1.4 in) | 28 February 1948 |
| Mar | 51.1 mm (2.0 in) | 16 March 2016 |
| Apr | 72.4 mm (2.9 in) | 18 April 2004 |
| May | 65.3 mm (2.6 in) | 21 May 1953 |
| Jun | 101.6 mm (4.0 in) | 14 June 1956 |
| Jul | 139.7 mm (5.5 in) | 1 July 1958 |
| Aug | 115.6 mm (4.6 in) | 2 August 2011 |
| Sep | 105.7 mm (4.2 in) | 15 September 1994 |
| Oct | 127.0 mm (5.0 in) | 5 October 2005 |
| Nov | 61.2 mm (2.4 in) | 2 November 2000 |
| Dec | 38.6 mm (1.5 in) | 28 December 1982 |
Period of Record Coverage
1893 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1893 | 296 | 81% | No |
| 1894 | 357 | 98% | Yes |
| 1895 | 346 | 95% | Yes |
| 1896 | 345 | 94% | Yes |
| 1897 | 286 | 78% | No |
| 1898 | 363 | 99% | Yes |
| 1899 | 300 | 82% | No |
| 1900 | 364 | 100% | Yes |
| 1901 | 352 | 96% | Yes |
| 1902 | 347 | 95% | Yes |
| 1903 | 355 | 97% | Yes |
| 1904 | 329 | 90% | No |
| 1905 | 322 | 88% | No |
| 1906 | 331 | 91% | Yes |
| 1907 | 338 | 93% | Yes |
| 1908 | 238 | 65% | No |
| 1909 | 341 | 93% | Yes |
| 1910 | 330 | 90% | Yes |
| 1911 | 334 | 92% | Yes |
| 1912 | 279 | 76% | No |
| 1913 | 340 | 93% | Yes |
| 1914 | 331 | 91% | Yes |
| 1915 | 360 | 99% | Yes |
| 1916 | 353 | 96% | Yes |
| 1917 | 356 | 98% | Yes |
| 1918 | 354 | 97% | Yes |
| 1919 | 295 | 81% | No |
| 1920 | 284 | 78% | No |
| 1921 | 328 | 90% | No |
| 1922 | 269 | 74% | No |
| 1923 | 273 | 75% | No |
| 1924 | 30 | 8% | No |
| 1933 | 67 | 18% | No |
| 1934 | 335 | 92% | Yes |
| 1935 | 330 | 90% | Yes |
| 1936 | 334 | 91% | Yes |
| 1937 | 253 | 69% | No |
| 1938 | 328 | 90% | No |
| 1939 | 327 | 90% | No |
| 1940 | 350 | 96% | Yes |
| 1941 | 158 | 43% | No |
| 1942 | 142 | 39% | No |
| 1943 | 142 | 39% | No |
| 1944 | 50 | 14% | No |
| 1945 | 133 | 36% | No |
| 1946 | 123 | 34% | No |
| 1947 | 138 | 38% | No |
| 1948 | 74 | 20% | No |
| 1949 | 89 | 24% | No |
| 1966 | 61 | 17% | No |
| 1967 | 31 | 8% | No |
| 1969 | 45 | 12% | No |
| 1970 | 83 | 23% | No |
| 1972 | 60 | 16% | No |
| 1973 | 31 | 8% | No |
| 1974 | 29 | 8% | No |
| 1997 | 61 | 17% | No |
| 1998 | 364 | 100% | Yes |
| 1999 | 364 | 100% | Yes |
| 2000 | 334 | 91% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 362 | 99% | Yes |
| 2008 | 365 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 364 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 363 | 99% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 305 | 83% | No |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 364 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 336 | 92% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 285 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 12 October 2026 | Hayward Rs, US | daily high max (Provisional) | 28.9 C (84.0 F) | 1.7 C (3.1 F) | 11 years | 15 of 100 (Routine) |
| 11 October 2026 | Hayward Rs, US | daily high min (Provisional) | 19.4 C (66.9 F) | 4.4 C (7.9 F) | 88 years | 43 of 100 (Notable) |
| 11 October 2026 | Hayward Rs, US | daily high max (Provisional) | 30.6 C (87.1 F) | 3.4 C (6.1 F) | 16 years | 19 of 100 (Routine) |
| 10 October 2026 | Hayward Rs, US | daily high max (Tie, Provisional) | 27.8 C (82.0 F) | tie | 88 years | 9 of 100 (Routine) |
| 30 September 2026 | Hayward Rs, US | daily high min (Tie, Provisional) | 15.6 C (60.1 F) | tie | 3 years | 2 of 100 (Routine) |
| 31 August 2026 | Hayward Rs, US | daily high min (Tie, Provisional) | 20.6 C (69.1 F) | tie | 25 years | 4 of 100 (Routine) |
| 27 July 2026 | Hayward Rs, US | daily high min (Tie) | 24.4 C (75.9 F) | tie | 131 years | 10 of 100 (Routine) |
| 15 July 2026 | Hayward Rs, US | daily high min (Tie) | 21.1 C (70.0 F) | tie | 89 years | 9 of 100 (Routine) |
| 12 July 2026 | Hayward Rs, US | daily high min (Tie) | 21.1 C (70.0 F) | tie | 131 years | 10 of 100 (Routine) |
| 23 April 2026 | Hayward Rs, US | daily high min | 13.9 C (57.0 F) | 2.2 C (4.0 F) | 111 years | 43 of 100 (Notable) |
| 2 April 2026 | Hayward Rs, US | daily rain | 13.5 mm (0.5 in) | 4.9 mm (0.19 in) | 123 years | 20 of 100 (Routine) |
| 30 March 2026 | Hayward Rs, US | daily high max (Tie) | 19.4 C (66.9 F) | tie | 27 years | 4 of 100 (Routine) |
| 22 March 2026 | Hayward Rs, US | daily high max | 21.7 C (71.1 F) | 3.9 C (7.0 F) | 13 years | 19 of 100 (Routine) |
| 9 March 2026 | Hayward Rs, US | daily high min | 8.3 C (46.9 F) | 5.5 C (9.9 F) | 9 years | 18 of 100 (Routine) |
| 18 February 2026 | Hayward Rs, US | daily rain | 8.1 mm (0.32 in) | 0.5 mm (0.02 in) | 44 years | 20 of 100 (Routine) |
| 17 February 2026 | Hayward Rs, US | daily high max (Tie) | 12.8 C (55.0 F) | tie | 8 years | 3 of 100 (Routine) |
| 16 February 2026 | Hayward Rs, US | daily high max | 12.8 C (55.0 F) | 0.6 C (1.1 F) | 15 years | 14 of 100 (Routine) |
| 15 February 2026 | Hayward Rs, US | daily high max | 11.7 C (53.1 F) | 3.4 C (6.1 F) | 104 years | 44 of 100 (Notable) |
| 14 February 2026 | Hayward Rs, US | daily high max | 11.1 C (52.0 F) | 2.8 C (5.0 F) | 15 years | 18 of 100 (Routine) |
| 29 December 2025 | Hayward Rs, US | daily snowfall | 14.0 cm (5.5 in) | 1.3 cm (0.5 in) | 59 years | 30 of 100 (Routine) |
Climate Trend
43 complete years, 1898 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1898 | 6.4 C | +0.58 C |
| 1900 | 6.4 C | +0.54 C |
| 1901 | 5.4 C | -0.46 C |
| 1902 | 5.5 C | -0.35 C |
| 1903 | 3.8 C | -2.05 C |
| 1906 | 4.5 C | -1.35 C |
| 1907 | 3.3 C | -2.52 C |
| 1909 | 4.5 C | -1.36 C |
| 1910 | 5.2 C | -0.64 C |
| 1911 | 5.4 C | -0.48 C |
| 1913 | 5.7 C | -0.16 C |
| 1914 | 5.5 C | -0.38 C |
| 1915 | 5.1 C | -0.80 C |
| 1916 | 3.9 C | -1.94 C |
| 1917 | 3.1 C | -2.79 C |
| 1918 | 5.0 C | -0.87 C |
| 1934 | 5.2 C | -0.67 C |
| 1940 | 4.4 C | -1.47 C |
| 1998 | 7.8 C | +1.96 C |
| 1999 | 6.8 C | +0.92 C |
| 2001 | 6.7 C | +0.86 C |
| 2002 | 6.3 C | +0.44 C |
| 2003 | 5.5 C | -0.34 C |
| 2004 | 5.7 C | -0.16 C |
| 2005 | 7.4 C | +1.50 C |
| 2006 | 7.4 C | +1.50 C |
| 2007 | 6.9 C | +1.06 C |
| 2008 | 5.2 C | -0.63 C |
| 2009 | 5.4 C | -0.48 C |
| 2010 | 7.0 C | +1.19 C |
| 2011 | 6.3 C | +0.46 C |
| 2012 | 7.9 C | +2.02 C |
| 2013 | 5.3 C | -0.55 C |
| 2014 | 4.5 C | -1.38 C |
| 2015 | 7.1 C | +1.27 C |
| 2017 | 6.9 C | +1.08 C |
| 2018 | 6.3 C | +0.40 C |
| 2019 | 5.6 C | -0.26 C |
| 2020 | 7.1 C | +1.27 C |
| 2021 | 7.6 C | +1.79 C |
| 2022 | 5.9 C | +0.03 C |
| 2023 | 8.0 C | +2.15 C |
| 2025 | 7.1 C | +1.23 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1898 to 2025. In Fahrenheit: 0.3 F (0.2 to 0.4) per decade. The slope is a straight line fitted to 43 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 0.2) per decade | 0.3 F (0.2 to 0.4) per decade | 1898 to 2025 | 43 | Rise |
| Mean daily maximum | 0.10 C (0.03 to 0.17) per decade | 0.2 F (0.1 to 0.3) per decade | 1898 to 2025 | 43 | Rise |
| Mean daily minimum | 0.2 C (0.1 to 0.3) per decade | 0.4 F (0.3 to 0.5) per decade | 1898 to 2025 | 43 | 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
1893 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 42.2 C (108.0 F) | 1936 | 33.3 C (91.9 F) | 86 |
| Coldest night (TNn) | -46.7 C (-52.1 F) | 1936 | -36.4 C (-33.5 F) | 86 |
| Wettest day (Rx1day) | 139.7 mm (5.5 in) | 1958 | 53.3 mm (2.1 in) | 127 |
| Wettest five days (Rx5day) | 217.7 mm (8.6 in) | 1994 | 83.3 mm (3.3 in) | 127 |
| Longest dry spell (CDD) | 66 days | 1923 | 21 days | 127 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | 37.2 C (99.0 F) |
| 1894 | 35.6 C (96.1 F) |
| 1895 | 32.8 C (91.0 F) |
| 1896 | 33.3 C (91.9 F) |
| 1897 | 37.2 C (99.0 F) |
| 1898 | 36.1 C (97.0 F) |
| 1899 | 33.9 C (93.0 F) |
| 1900 | 35.0 C (95.0 F) |
| 1901 | 38.9 C (102.0 F) |
| 1902 | 32.2 C (90.0 F) |
| 1903 | 31.1 C (88.0 F) |
| 1904 | 33.3 C (91.9 F) |
| 1905 | 33.3 C (91.9 F) |
| 1906 | 33.9 C (93.0 F) |
| 1907 | 32.2 C (90.0 F) |
| 1908 | 31.1 C (88.0 F) |
| 1909 | 32.2 C (90.0 F) |
| 1910 | 35.6 C (96.1 F) |
| 1911 | 36.7 C (98.1 F) |
| 1912 | 35.0 C (95.0 F) |
| 1913 | 37.2 C (99.0 F) |
| 1914 | 36.1 C (97.0 F) |
| 1915 | 33.3 C (91.9 F) |
| 1916 | 35.6 C (96.1 F) |
| 1917 | 36.1 C (97.0 F) |
| 1918 | 35.6 C (96.1 F) |
| 1919 | 32.8 C (91.0 F) |
| 1920 | 33.9 C (93.0 F) |
| 1921 | 36.7 C (98.1 F) |
| 1922 | 34.4 C (93.9 F) |
| 1923 | 35.0 C (95.0 F) |
| 1924 | 4.4 C (39.9 F) |
| 1932 | n/a |
| 1933 | 22.8 C (73.0 F) |
| 1934 | 41.1 C (106.0 F) |
| 1935 | 33.9 C (93.0 F) |
| 1936 | 42.2 C (108.0 F) |
| 1937 | 33.3 C (91.9 F) |
| 1938 | 32.8 C (91.0 F) |
| 1939 | 33.3 C (91.9 F) |
| 1940 | 34.4 C (93.9 F) |
| 1941 | 18.3 C (64.9 F) |
| 1942 | 15.6 C (60.1 F) |
| 1943 | 11.1 C (52.0 F) |
| 1944 | 15.0 C (59.0 F) |
| 1945 | 22.2 C (72.0 F) |
| 1946 | 18.9 C (66.0 F) |
| 1947 | 9.4 C (48.9 F) |
| 1948 | 15.6 C (60.1 F) |
| 1949 | 11.1 C (52.0 F) |
| 1950 | n/a |
| 1951 | n/a |
| 1952 | n/a |
| 1953 | n/a |
| 1954 | n/a |
| 1955 | n/a |
| 1956 | n/a |
| 1957 | n/a |
| 1958 | n/a |
| 1959 | n/a |
| 1960 | n/a |
| 1961 | n/a |
| 1962 | n/a |
| 1963 | n/a |
| 1964 | n/a |
| 1965 | n/a |
| 1966 | 30.0 C (86.0 F) |
| 1967 | 25.6 C (78.1 F) |
| 1968 | n/a |
| 1969 | 21.1 C (70.0 F) |
| 1970 | 23.3 C (73.9 F) |
| 1971 | n/a |
| 1972 | 31.1 C (88.0 F) |
| 1973 | 32.8 C (91.0 F) |
| 1974 | 6.7 C (44.1 F) |
| 1975 | n/a |
| 1976 | n/a |
| 1977 | n/a |
| 1978 | n/a |
| 1979 | n/a |
| 1980 | n/a |
| 1981 | n/a |
| 1982 | n/a |
| 1983 | n/a |
| 1984 | n/a |
| 1985 | n/a |
| 1986 | n/a |
| 1987 | n/a |
| 1988 | n/a |
| 1989 | n/a |
| 1990 | n/a |
| 1991 | n/a |
| 1992 | n/a |
| 1993 | n/a |
| 1994 | n/a |
| 1995 | n/a |
| 1996 | n/a |
| 1997 | 12.8 C (55.0 F) |
| 1998 | 33.3 C (91.9 F) |
| 1999 | 35.6 C (96.1 F) |
| 2000 | 32.2 C (90.0 F) |
| 2001 | 35.0 C (95.0 F) |
| 2002 | 33.3 C (91.9 F) |
| 2003 | 33.3 C (91.9 F) |
| 2004 | 33.3 C (91.9 F) |
| 2005 | 36.7 C (98.1 F) |
| 2006 | 38.3 C (100.9 F) |
| 2007 | 33.9 C (93.0 F) |
| 2008 | 32.2 C (90.0 F) |
| 2009 | 34.4 C (93.9 F) |
| 2010 | 33.3 C (91.9 F) |
| 2011 | 35.6 C (96.1 F) |
| 2012 | 35.6 C (96.1 F) |
| 2013 | 35.6 C (96.1 F) |
| 2014 | 32.2 C (90.0 F) |
| 2015 | 32.8 C (91.0 F) |
| 2016 | 33.3 C (91.9 F) |
| 2017 | 32.8 C (91.0 F) |
| 2018 | 35.0 C (95.0 F) |
| 2019 | 32.2 C (90.0 F) |
| 2020 | 33.9 C (93.0 F) |
| 2021 | 35.0 C (95.0 F) |
| 2022 | 35.6 C (96.1 F) |
| 2023 | 35.0 C (95.0 F) |
| 2024 | 33.9 C (93.0 F) |
| 2025 | 33.3 C (91.9 F) |
| 2026 | 34.4 C (93.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | -37.2 C (-35.0 F) |
| 1894 | -40.6 C (-41.1 F) |
| 1895 | -45.0 C (-49.0 F) |
| 1896 | -39.4 C (-38.9 F) |
| 1897 | -37.2 C (-35.0 F) |
| 1898 | -37.2 C (-35.0 F) |
| 1899 | -42.8 C (-45.0 F) |
| 1900 | -35.6 C (-32.1 F) |
| 1901 | -38.9 C (-38.0 F) |
| 1902 | -39.4 C (-38.9 F) |
| 1903 | -37.2 C (-35.0 F) |
| 1904 | -41.1 C (-42.0 F) |
| 1905 | -38.9 C (-38.0 F) |
| 1906 | -39.4 C (-38.9 F) |
| 1907 | -45.6 C (-50.1 F) |
| 1908 | -38.3 C (-36.9 F) |
| 1909 | -38.9 C (-38.0 F) |
| 1910 | -38.9 C (-38.0 F) |
| 1911 | -40.0 C (-40.0 F) |
| 1912 | -42.8 C (-45.0 F) |
| 1913 | -35.6 C (-32.1 F) |
| 1914 | -36.7 C (-34.1 F) |
| 1915 | -41.7 C (-43.1 F) |
| 1916 | -40.6 C (-41.1 F) |
| 1917 | -37.8 C (-36.0 F) |
| 1918 | -38.9 C (-38.0 F) |
| 1919 | -39.4 C (-38.9 F) |
| 1920 | -37.8 C (-36.0 F) |
| 1921 | -32.8 C (-27.0 F) |
| 1922 | -33.3 C (-27.9 F) |
| 1923 | -33.3 C (-27.9 F) |
| 1924 | -38.3 C (-36.9 F) |
| 1932 | n/a |
| 1933 | -38.3 C (-36.9 F) |
| 1934 | -34.4 C (-29.9 F) |
| 1935 | -42.2 C (-44.0 F) |
| 1936 | -46.7 C (-52.1 F) |
| 1937 | -36.7 C (-34.1 F) |
| 1938 | -40.0 C (-40.0 F) |
| 1939 | -38.9 C (-38.0 F) |
| 1940 | -36.7 C (-34.1 F) |
| 1941 | -28.9 C (-20.0 F) |
| 1942 | -36.7 C (-34.1 F) |
| 1943 | -38.3 C (-36.9 F) |
| 1944 | -32.8 C (-27.0 F) |
| 1945 | -39.4 C (-38.9 F) |
| 1946 | -41.1 C (-42.0 F) |
| 1947 | -40.6 C (-41.1 F) |
| 1948 | -41.7 C (-43.1 F) |
| 1949 | -35.6 C (-32.1 F) |
| 1950 | n/a |
| 1951 | n/a |
| 1952 | n/a |
| 1953 | n/a |
| 1954 | n/a |
| 1955 | n/a |
| 1956 | n/a |
| 1957 | n/a |
| 1958 | n/a |
| 1959 | n/a |
| 1960 | n/a |
| 1961 | n/a |
| 1962 | n/a |
| 1963 | n/a |
| 1964 | n/a |
| 1965 | n/a |
| 1966 | -25.6 C (-14.1 F) |
| 1967 | -12.8 C (9.0 F) |
| 1968 | n/a |
| 1969 | -30.6 C (-23.1 F) |
| 1970 | -36.1 C (-33.0 F) |
| 1971 | n/a |
| 1972 | -2.8 C (27.0 F) |
| 1973 | 3.3 C (37.9 F) |
| 1974 | -22.2 C (-8.0 F) |
| 1975 | n/a |
| 1976 | n/a |
| 1977 | n/a |
| 1978 | n/a |
| 1979 | n/a |
| 1980 | n/a |
| 1981 | n/a |
| 1982 | n/a |
| 1983 | n/a |
| 1984 | n/a |
| 1985 | n/a |
| 1986 | n/a |
| 1987 | n/a |
| 1988 | n/a |
| 1989 | n/a |
| 1990 | n/a |
| 1991 | n/a |
| 1992 | n/a |
| 1993 | n/a |
| 1994 | n/a |
| 1995 | n/a |
| 1996 | n/a |
| 1997 | -26.7 C (-16.1 F) |
| 1998 | -33.3 C (-27.9 F) |
| 1999 | -34.4 C (-29.9 F) |
| 2000 | -34.4 C (-29.9 F) |
| 2001 | -32.2 C (-26.0 F) |
| 2002 | -27.8 C (-18.0 F) |
| 2003 | -33.3 C (-27.9 F) |
| 2004 | -35.0 C (-31.0 F) |
| 2005 | -36.1 C (-33.0 F) |
| 2006 | -33.3 C (-27.9 F) |
| 2007 | -34.4 C (-29.9 F) |
| 2008 | -33.3 C (-27.9 F) |
| 2009 | -36.1 C (-33.0 F) |
| 2010 | -34.4 C (-29.9 F) |
| 2011 | -36.7 C (-34.1 F) |
| 2012 | -30.6 C (-23.1 F) |
| 2013 | -33.3 C (-27.9 F) |
| 2014 | -36.1 C (-33.0 F) |
| 2015 | -36.1 C (-33.0 F) |
| 2016 | -32.8 C (-27.0 F) |
| 2017 | -33.3 C (-27.9 F) |
| 2018 | -32.2 C (-26.0 F) |
| 2019 | -36.1 C (-33.0 F) |
| 2020 | -30.0 C (-22.0 F) |
| 2021 | -38.9 C (-38.0 F) |
| 2022 | -33.9 C (-29.0 F) |
| 2023 | -31.1 C (-24.0 F) |
| 2024 | -28.3 C (-18.9 F) |
| 2025 | -33.3 C (-27.9 F) |
| 2026 | -38.3 C (-36.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 44.5 mm (1.8 in) |
| 1894 | 30.5 mm (1.2 in) |
| 1895 | 88.9 mm (3.5 in) |
| 1896 | 30.0 mm (1.2 in) |
| 1897 | 101.6 mm (4.0 in) |
| 1898 | 53.3 mm (2.1 in) |
| 1899 | 93.7 mm (3.7 in) |
| 1900 | 72.4 mm (2.9 in) |
| 1901 | 50.8 mm (2.0 in) |
| 1902 | 50.8 mm (2.0 in) |
| 1903 | 59.9 mm (2.4 in) |
| 1904 | 61.0 mm (2.4 in) |
| 1905 | 59.2 mm (2.3 in) |
| 1906 | 52.1 mm (2.1 in) |
| 1907 | 69.9 mm (2.8 in) |
| 1908 | 35.6 mm (1.4 in) |
| 1909 | 51.8 mm (2.0 in) |
| 1910 | 62.2 mm (2.4 in) |
| 1911 | 47.0 mm (1.9 in) |
| 1912 | 41.9 mm (1.6 in) |
| 1913 | 30.5 mm (1.2 in) |
| 1914 | 53.3 mm (2.1 in) |
| 1915 | 73.7 mm (2.9 in) |
| 1916 | 53.3 mm (2.1 in) |
| 1917 | 50.8 mm (2.0 in) |
| 1918 | 58.4 mm (2.3 in) |
| 1919 | 50.8 mm (2.0 in) |
| 1920 | 58.4 mm (2.3 in) |
| 1921 | 58.4 mm (2.3 in) |
| 1922 | 40.9 mm (1.6 in) |
| 1923 | 76.2 mm (3.0 in) |
| 1924 | 12.2 mm (0.5 in) |
| 1932 | 8.9 mm (0.35 in) |
| 1933 | 41.9 mm (1.6 in) |
| 1934 | 45.5 mm (1.8 in) |
| 1935 | 68.6 mm (2.7 in) |
| 1936 | 78.2 mm (3.1 in) |
| 1937 | 57.4 mm (2.3 in) |
| 1938 | 45.7 mm (1.8 in) |
| 1939 | 63.5 mm (2.5 in) |
| 1940 | 55.1 mm (2.2 in) |
| 1941 | 21.8 mm (0.9 in) |
| 1942 | 23.1 mm (0.9 in) |
| 1943 | 23.4 mm (0.9 in) |
| 1944 | 24.6 mm (1.0 in) |
| 1945 | 22.9 mm (0.9 in) |
| 1946 | 20.3 mm (0.8 in) |
| 1947 | 11.2 mm (0.4 in) |
| 1948 | 41.1 mm (1.6 in) |
| 1949 | 71.1 mm (2.8 in) |
| 1950 | 63.5 mm (2.5 in) |
| 1951 | 59.7 mm (2.4 in) |
| 1952 | 48.8 mm (1.9 in) |
| 1953 | 65.3 mm (2.6 in) |
| 1954 | 85.3 mm (3.4 in) |
| 1955 | 59.2 mm (2.3 in) |
| 1956 | 101.6 mm (4.0 in) |
| 1957 | 62.2 mm (2.4 in) |
| 1958 | 139.7 mm (5.5 in) |
| 1959 | 52.3 mm (2.1 in) |
| 1960 | 80.0 mm (3.1 in) |
| 1961 | 27.4 mm (1.1 in) |
| 1962 | 66.3 mm (2.6 in) |
| 1963 | 79.2 mm (3.1 in) |
| 1964 | 31.0 mm (1.2 in) |
| 1965 | 38.9 mm (1.5 in) |
| 1966 | 71.9 mm (2.8 in) |
| 1967 | 88.1 mm (3.5 in) |
| 1968 | 58.4 mm (2.3 in) |
| 1969 | 40.4 mm (1.6 in) |
| 1970 | 36.1 mm (1.4 in) |
| 1971 | 36.6 mm (1.4 in) |
| 1972 | 65.3 mm (2.6 in) |
| 1973 | 67.8 mm (2.7 in) |
| 1974 | 40.9 mm (1.6 in) |
| 1975 | 64.5 mm (2.5 in) |
| 1976 | 39.9 mm (1.6 in) |
| 1977 | 57.4 mm (2.3 in) |
| 1978 | 97.0 mm (3.8 in) |
| 1979 | 61.0 mm (2.4 in) |
| 1980 | 41.9 mm (1.6 in) |
| 1981 | 50.8 mm (2.0 in) |
| 1982 | 44.5 mm (1.8 in) |
| 1983 | 80.3 mm (3.2 in) |
| 1984 | 51.1 mm (2.0 in) |
| 1985 | 68.6 mm (2.7 in) |
| 1986 | 37.3 mm (1.5 in) |
| 1987 | 50.8 mm (2.0 in) |
| 1988 | 81.5 mm (3.2 in) |
| 1989 | 85.1 mm (3.4 in) |
| 1990 | 53.1 mm (2.1 in) |
| 1991 | 75.7 mm (3.0 in) |
| 1992 | 109.0 mm (4.3 in) |
| 1993 | 42.4 mm (1.7 in) |
| 1994 | 105.7 mm (4.2 in) |
| 1995 | 51.3 mm (2.0 in) |
| 1996 | 93.0 mm (3.7 in) |
| 1997 | 41.1 mm (1.6 in) |
| 1998 | 34.0 mm (1.3 in) |
| 1999 | 57.7 mm (2.3 in) |
| 2000 | 71.9 mm (2.8 in) |
| 2001 | 55.1 mm (2.2 in) |
| 2002 | 56.6 mm (2.2 in) |
| 2003 | 42.2 mm (1.7 in) |
| 2004 | 72.4 mm (2.9 in) |
| 2005 | 127.0 mm (5.0 in) |
| 2006 | 40.1 mm (1.6 in) |
| 2007 | 69.3 mm (2.7 in) |
| 2008 | 45.2 mm (1.8 in) |
| 2009 | 34.0 mm (1.3 in) |
| 2010 | 70.1 mm (2.8 in) |
| 2011 | 115.6 mm (4.6 in) |
| 2012 | 49.3 mm (1.9 in) |
| 2013 | 73.7 mm (2.9 in) |
| 2014 | 85.9 mm (3.4 in) |
| 2015 | 66.5 mm (2.6 in) |
| 2016 | 103.1 mm (4.1 in) |
| 2017 | 69.9 mm (2.8 in) |
| 2018 | 55.6 mm (2.2 in) |
| 2019 | 39.6 mm (1.6 in) |
| 2020 | 50.3 mm (2.0 in) |
| 2021 | 53.3 mm (2.1 in) |
| 2022 | 31.8 mm (1.3 in) |
| 2023 | 43.2 mm (1.7 in) |
| 2024 | 47.0 mm (1.9 in) |
| 2025 | 31.5 mm (1.2 in) |
| 2026 | 52.3 mm (2.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 54.6 mm (2.1 in) |
| 1894 | 28.6 mm (1.1 in) |
| 1895 | 124.1 mm (4.9 in) |
| 1896 | 83.1 mm (3.3 in) |
| 1897 | 101.6 mm (4.0 in) |
| 1898 | 80.0 mm (3.1 in) |
| 1899 | 144.0 mm (5.7 in) |
| 1900 | 148.6 mm (5.9 in) |
| 1901 | 83.9 mm (3.3 in) |
| 1902 | 98.8 mm (3.9 in) |
| 1903 | 85.4 mm (3.4 in) |
| 1904 | 97.6 mm (3.8 in) |
| 1905 | 60.5 mm (2.4 in) |
| 1906 | 93.0 mm (3.7 in) |
| 1907 | 185.2 mm (7.3 in) |
| 1908 | 69.9 mm (2.8 in) |
| 1909 | 71.1 mm (2.8 in) |
| 1910 | 62.2 mm (2.4 in) |
| 1911 | 64.8 mm (2.6 in) |
| 1912 | 56.3 mm (2.2 in) |
| 1913 | 35.6 mm (1.4 in) |
| 1914 | 104.4 mm (4.1 in) |
| 1915 | 57.7 mm (2.3 in) |
| 1916 | 71.1 mm (2.8 in) |
| 1917 | 57.6 mm (2.3 in) |
| 1918 | 79.7 mm (3.1 in) |
| 1919 | 68.1 mm (2.7 in) |
| 1920 | 114.3 mm (4.5 in) |
| 1921 | 80.5 mm (3.2 in) |
| 1922 | 66.3 mm (2.6 in) |
| 1923 | 108.0 mm (4.3 in) |
| 1924 | 14.7 mm (0.6 in) |
| 1932 | 13.7 mm (0.5 in) |
| 1933 | 65.4 mm (2.6 in) |
| 1934 | 69.6 mm (2.7 in) |
| 1935 | 75.7 mm (3.0 in) |
| 1936 | 86.4 mm (3.4 in) |
| 1937 | 89.7 mm (3.5 in) |
| 1938 | 59.4 mm (2.3 in) |
| 1939 | 91.2 mm (3.6 in) |
| 1940 | 65.2 mm (2.6 in) |
| 1941 | 25.8 mm (1.0 in) |
| 1942 | 36.6 mm (1.4 in) |
| 1943 | 49.0 mm (1.9 in) |
| 1944 | 24.6 mm (1.0 in) |
| 1945 | 33.4 mm (1.3 in) |
| 1946 | 21.3 mm (0.8 in) |
| 1947 | 19.1 mm (0.8 in) |
| 1948 | 43.7 mm (1.7 in) |
| 1949 | 121.9 mm (4.8 in) |
| 1950 | 92.4 mm (3.6 in) |
| 1951 | 103.2 mm (4.1 in) |
| 1952 | 140.0 mm (5.5 in) |
| 1953 | 92.9 mm (3.7 in) |
| 1954 | 124.7 mm (4.9 in) |
| 1955 | 118.1 mm (4.6 in) |
| 1956 | 110.2 mm (4.3 in) |
| 1957 | 118.1 mm (4.6 in) |
| 1958 | 163.3 mm (6.4 in) |
| 1959 | 93.3 mm (3.7 in) |
| 1960 | 132.1 mm (5.2 in) |
| 1961 | 69.6 mm (2.7 in) |
| 1962 | 72.8 mm (2.9 in) |
| 1963 | 83.3 mm (3.3 in) |
| 1964 | 56.9 mm (2.2 in) |
| 1965 | 62.0 mm (2.4 in) |
| 1966 | 94.0 mm (3.7 in) |
| 1967 | 115.0 mm (4.5 in) |
| 1968 | 87.4 mm (3.4 in) |
| 1969 | 75.9 mm (3.0 in) |
| 1970 | 63.1 mm (2.5 in) |
| 1971 | 66.1 mm (2.6 in) |
| 1972 | 135.4 mm (5.3 in) |
| 1973 | 81.9 mm (3.2 in) |
| 1974 | 81.5 mm (3.2 in) |
| 1975 | 97.1 mm (3.8 in) |
| 1976 | 43.0 mm (1.7 in) |
| 1977 | 104.9 mm (4.1 in) |
| 1978 | 109.5 mm (4.3 in) |
| 1979 | 84.1 mm (3.3 in) |
| 1980 | 84.1 mm (3.3 in) |
| 1981 | 102.2 mm (4.0 in) |
| 1982 | 82.6 mm (3.3 in) |
| 1983 | 82.9 mm (3.3 in) |
| 1984 | 104.0 mm (4.1 in) |
| 1985 | 111.0 mm (4.4 in) |
| 1986 | 50.6 mm (2.0 in) |
| 1987 | 94.8 mm (3.7 in) |
| 1988 | 105.6 mm (4.2 in) |
| 1989 | 90.4 mm (3.6 in) |
| 1990 | 75.9 mm (3.0 in) |
| 1991 | 115.4 mm (4.5 in) |
| 1992 | 121.2 mm (4.8 in) |
| 1993 | 59.2 mm (2.3 in) |
| 1994 | 217.7 mm (8.6 in) |
| 1995 | 72.6 mm (2.9 in) |
| 1996 | 118.0 mm (4.6 in) |
| 1997 | 55.7 mm (2.2 in) |
| 1998 | 84.8 mm (3.3 in) |
| 1999 | 68.9 mm (2.7 in) |
| 2000 | 84.1 mm (3.3 in) |
| 2001 | 83.6 mm (3.3 in) |
| 2002 | 94.5 mm (3.7 in) |
| 2003 | 63.7 mm (2.5 in) |
| 2004 | 53.0 mm (2.1 in) |
| 2005 | 153.0 mm (6.0 in) |
| 2006 | 119.6 mm (4.7 in) |
| 2007 | 134.5 mm (5.3 in) |
| 2008 | 56.9 mm (2.2 in) |
| 2009 | 60.2 mm (2.4 in) |
| 2010 | 102.8 mm (4.0 in) |
| 2011 | 31.5 mm (1.2 in) |
| 2012 | 91.4 mm (3.6 in) |
| 2013 | 126.0 mm (5.0 in) |
| 2014 | 143.8 mm (5.7 in) |
| 2015 | 91.4 mm (3.6 in) |
| 2016 | 153.2 mm (6.0 in) |
| 2017 | 99.6 mm (3.9 in) |
| 2018 | 134.8 mm (5.3 in) |
| 2019 | 69.9 mm (2.8 in) |
| 2020 | 68.3 mm (2.7 in) |
| 2021 | 98.2 mm (3.9 in) |
| 2022 | 47.5 mm (1.9 in) |
| 2023 | 56.2 mm (2.2 in) |
| 2024 | 79.3 mm (3.1 in) |
| 2025 | 48.6 mm (1.9 in) |
| 2026 | 63.7 mm (2.5 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 15 days |
| 1894 | 20 days |
| 1895 | 13 days |
| 1896 | 17 days |
| 1897 | 25 days |
| 1898 | 25 days |
| 1899 | 23 days |
| 1900 | 22 days |
| 1901 | 21 days |
| 1902 | 28 days |
| 1903 | 22 days |
| 1904 | 32 days |
| 1905 | 26 days |
| 1906 | 16 days |
| 1907 | 25 days |
| 1908 | 17 days |
| 1909 | 17 days |
| 1910 | 23 days |
| 1911 | 17 days |
| 1912 | 22 days |
| 1913 | 40 days |
| 1914 | 20 days |
| 1915 | 22 days |
| 1916 | 15 days |
| 1917 | 31 days |
| 1918 | 32 days |
| 1919 | 22 days |
| 1920 | 22 days |
| 1921 | 21 days |
| 1922 | 21 days |
| 1923 | 66 days |
| 1924 | 8 days |
| 1932 | 17 days |
| 1933 | 11 days |
| 1934 | 18 days |
| 1935 | 14 days |
| 1936 | 21 days |
| 1937 | 14 days |
| 1938 | 21 days |
| 1939 | 19 days |
| 1940 | 18 days |
| 1941 | 17 days |
| 1942 | 18 days |
| 1943 | 52 days |
| 1944 | 27 days |
| 1945 | 17 days |
| 1946 | 15 days |
| 1947 | 16 days |
| 1948 | 10 days |
| 1949 | 21 days |
| 1950 | 20 days |
| 1951 | 17 days |
| 1952 | 32 days |
| 1953 | 18 days |
| 1954 | 21 days |
| 1955 | 16 days |
| 1956 | 19 days |
| 1957 | 19 days |
| 1958 | 14 days |
| 1959 | 23 days |
| 1960 | 24 days |
| 1961 | 30 days |
| 1962 | 16 days |
| 1963 | 17 days |
| 1964 | 22 days |
| 1965 | 18 days |
| 1966 | 25 days |
| 1967 | 25 days |
| 1968 | 26 days |
| 1969 | 36 days |
| 1970 | 20 days |
| 1971 | 12 days |
| 1972 | 20 days |
| 1973 | 16 days |
| 1974 | 15 days |
| 1975 | 20 days |
| 1976 | 27 days |
| 1977 | 13 days |
| 1978 | 18 days |
| 1979 | 24 days |
| 1980 | 30 days |
| 1981 | 25 days |
| 1982 | 25 days |
| 1983 | 20 days |
| 1984 | 22 days |
| 1985 | 16 days |
| 1986 | 21 days |
| 1987 | 23 days |
| 1988 | 16 days |
| 1989 | 16 days |
| 1990 | 21 days |
| 1991 | 16 days |
| 1992 | 18 days |
| 1993 | 20 days |
| 1994 | 14 days |
| 1995 | 19 days |
| 1996 | 18 days |
| 1997 | 28 days |
| 1998 | 31 days |
| 1999 | 23 days |
| 2000 | 19 days |
| 2001 | 17 days |
| 2002 | 27 days |
| 2003 | 27 days |
| 2004 | 14 days |
| 2005 | 18 days |
| 2006 | 22 days |
| 2007 | 33 days |
| 2008 | 22 days |
| 2009 | 21 days |
| 2010 | 35 days |
| 2011 | 13 days |
| 2012 | 24 days |
| 2013 | 16 days |
| 2014 | 13 days |
| 2015 | 19 days |
| 2016 | 21 days |
| 2017 | 18 days |
| 2018 | 25 days |
| 2019 | 24 days |
| 2020 | 35 days |
| 2021 | 23 days |
| 2022 | 34 days |
| 2023 | 22 days |
| 2024 | 35 days |
| 2025 | 32 days |
| 2026 | 15 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
43 years with a frostAcross 43 years with a frost, the median last spring frost at Hayward Rs falls on 27 May and the median first autumn frost on 12 September, which leaves a median of 111 days between them.
Fitted over all years, the growing season changes by +2.2 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1916 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 27 May | n/a | 27 May | n/a | -1.0 days per decade |
| First autumn frost | 12 September | n/a | 14 September | n/a | +1.2 days per decade |
| Growing days | 111 days | n/a | 111 days | n/a | +2.2 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
85 years, 1895 to 2025A day with at least 56.5 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 131.3 mm (5.2 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 56.5 mm (2.2 in) | |
| 5 years | 75.7 mm (3.0 in) | |
| 10 years | 88.8 mm (3.5 in) | |
| 25 years | 105.6 mm (4.2 in) | |
| 50 years | 118.4 mm (4.7 in) | |
| 100 years | 131.3 mm (5.2 in) | Longer than the 85 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, 85 years of values from 1895 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: 139.7 mm (5.5 in) in 1958; 127.0 mm (5.0 in) in 2005; 109.0 mm (4.3 in) in 1992.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Hayward Rs, at 2005. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2005 ran 0.6 C (1.1 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2005 | +0.6 | +1.1 | 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.
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).