New Haven Tweed AP Weather Records (USW00014758)
Record envelope, standing records and threshold days for New Haven Tweed AP (USW00014758), Connecticut, United States, with 79 years of record.
Key Facts for New Haven Tweed AP
- New Haven Tweed AP (USW00014758) is a weather station in Connecticut, United States at 41.26 latitude and -72.89 longitude, 2 m (6 ft) above sea level.
- The station reports from 1948 to 2026, 79 years of record.
- 1,464 records set at New Haven Tweed AP still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- New Haven Tweed AP set a daily record precipitation of 45.7 mm (1.8 in) on 11 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Connecticut, United States, 41.26 latitude, -72.89 longitude.
- Elevation: 2 m (6 ft).
- Period of record: 1948 to 2026, 79 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
10 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 20.6 C (69.1 F) | -22.2 C (-8.0 F) | 11.1 C (52.0 F) | -15.6 C (3.9 F) |
| Feb | 20.0 C (68.0 F) | -21.0 C (-5.8 F) | 8.9 C (48.0 F) | -17.2 C (1.0 F) |
| Mar | 25.0 C (77.0 F) | -17.2 C (1.0 F) | 20.0 C (68.0 F) | -9.4 C (15.1 F) |
| Apr | 31.1 C (88.0 F) | -8.3 C (17.1 F) | 25.6 C (78.1 F) | -2.8 C (27.0 F) |
| May | 35.0 C (95.0 F) | -1.0 C (30.2 F) | 31.7 C (89.1 F) | 3.9 C (39.0 F) |
| Jun | 36.7 C (98.1 F) | 4.4 C (39.9 F) | 31.1 C (88.0 F) | 7.8 C (46.0 F) |
| Jul | 38.3 C (100.9 F) | 10.0 C (50.0 F) | 35.0 C (95.0 F) | 15.6 C (60.1 F) |
| Aug | 37.8 C (100.0 F) | 6.1 C (43.0 F) | 28.9 C (84.0 F) | 14.4 C (57.9 F) |
| Sep | 35.0 C (95.0 F) | 1.1 C (34.0 F) | 29.4 C (84.9 F) | 8.3 C (46.9 F) |
| Oct | 31.7 C (89.1 F) | -4.9 C (23.2 F) | 25.6 C (78.1 F) | 2.2 C (36.0 F) |
| Nov | 26.7 C (80.1 F) | -10.5 C (13.1 F) | n/a | n/a |
| Dec | 18.3 C (64.9 F) | -19.4 C (-2.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1948 | 39 |
| 1949 | 35 |
| 1950 | 36 |
| 1951 | 32 |
| 1952 | 25 |
| 1953 | 33 |
| 1954 | 25 |
| 1955 | 33 |
| 1956 | 38 |
| 1957 | 37 |
| 1958 | 30 |
| 1959 | 30 |
| 1960 | 25 |
| 1961 | 33 |
| 1962 | 29 |
| 1963 | 25 |
| 1964 | 27 |
| 1965 | 20 |
| 1966 | 20 |
| 1967 | 38 |
| 1968 | 26 |
| 1969 | 19 |
| 1970 | 21 |
| 1971 | 7 |
| 1972 | 11 |
| 1973 | 10 |
| 1974 | 26 |
| 1975 | 22 |
| 1976 | 30 |
| 1977 | 27 |
| 2001 | 8 |
| 2002 | 36 |
| 2003 | 26 |
| 2004 | 18 |
| 2005 | 17 |
| 2006 | 13 |
| 2007 | 28 |
| 2008 | 14 |
| 2009 | 21 |
| 2010 | 28 |
| 2011 | 20 |
| 2012 | 25 |
| 2013 | 22 |
| 2014 | 20 |
| 2015 | 40 |
| 2016 | 30 |
| 2017 | 35 |
| 2018 | 32 |
| 2019 | 15 |
| 2020 | 32 |
| 2021 | 37 |
| 2022 | 42 |
| 2023 | 28 |
| 2024 | 32 |
| 2025 | 28 |
| 2026 | 8 |
All-Time Record Progression
3 new records| Date | Kind | Detail |
|---|---|---|
| 2011-07-22 | Record high maximum temperature | Record high maximum temperature 38.3 C (100.9 F) |
| 2020-08-12 | Record high minimum temperature | Record high minimum temperature 25.6 C (78.1 F) |
| 2022-08-07 | Record high minimum temperature | Record high minimum temperature 26.1 C (79.0 F) |
Wettest Day of Each Month
Jun: 133.1 mm (5.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 66.0 mm (2.6 in) | 6 January 1962 |
| Feb | 70.1 mm (2.8 in) | 13 February 1966 |
| Mar | 95.5 mm (3.8 in) | 21 March 1974 |
| Apr | 100.6 mm (4.0 in) | 23 April 2006 |
| May | 90.2 mm (3.6 in) | 12 May 2006 |
| Jun | 133.1 mm (5.2 in) | 19 June 1972 |
| Jul | 116.6 mm (4.6 in) | 19 July 1971 |
| Aug | 106.7 mm (4.2 in) | 28 August 2006 |
| Sep | 128.8 mm (5.1 in) | 12 September 1960 |
| Oct | 97.8 mm (3.9 in) | 7 October 1972 |
| Nov | 110.0 mm (4.3 in) | 7 November 1963 |
| Dec | 74.7 mm (2.9 in) | 10 December 2023 |
Period of Record Coverage
1948 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1948 | 365 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 363 | 99% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 365 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 360 | 99% | Yes |
| 1971 | 272 | 75% | No |
| 1972 | 184 | 50% | No |
| 1973 | 307 | 84% | No |
| 1974 | 307 | 84% | No |
| 1975 | 362 | 99% | Yes |
| 1976 | 360 | 98% | Yes |
| 1977 | 265 | 73% | No |
| 2001 | 61 | 17% | No |
| 2002 | 362 | 99% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 357 | 98% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 363 | 99% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 362 | 99% | Yes |
| 2019 | 363 | 99% | Yes |
| 2020 | 364 | 99% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 364 | 100% | Yes |
| 2024 | 365 | 100% | Yes |
| 2025 | 356 | 98% | Yes |
| 2026 | 256 | 70% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 11 October 2026 | New Haven Tweed AP, US | daily rain (Provisional) | 45.7 mm (1.8 in) | 11.7 mm (0.5 in) | 24 years | 21 of 100 (Routine) |
| 2 October 2026 | New Haven Tweed AP, US | daily high min (Tie, Provisional) | 17.2 C (63.0 F) | tie | 24 years | 3 of 100 (Routine) |
| 10 September 2026 | New Haven Tweed AP, US | daily high max (Tie, Provisional) | 29.4 C (84.9 F) | tie | 64 years | 6 of 100 (Routine) |
| 6 July 2026 | New Haven Tweed AP, US | daily rain | 90.4 mm (3.6 in) | 56.1 mm (2.2 in) | 7 years | 49 of 100 (Notable) |
| 3 July 2026 | New Haven Tweed AP, US | daily high min | 25.0 C (77.0 F) | 1.7 C (3.1 F) | 3 years | 12 of 100 (Routine) |
| 26 June 2026 | New Haven Tweed AP, US | daily rain | 15.0 mm (0.6 in) | 0.8 mm (0.03 in) | 3 years | 7 of 100 (Routine) |
| 11 June 2026 | New Haven Tweed AP, US | daily high max | 30.6 C (87.1 F) | 0.6 C (1.1 F) | 59 years | 25 of 100 (Routine) |
| 2 June 2026 | New Haven Tweed AP, US | daily low min | 7.8 C (46.0 F) | 0.5 C (0.9 F) | 60 years | 26 of 100 (Routine) |
| 20 May 2026 | New Haven Tweed AP, US | daily high max | 31.7 C (89.1 F) | 2.3 C (4.1 F) | 51 years | 27 of 100 (Routine) |
| 20 May 2026 | New Haven Tweed AP, US | daily high min (Tie) | 16.7 C (62.1 F) | tie | 7 years | 2 of 100 (Routine) |
| 17 May 2026 | New Haven Tweed AP, US | daily high max (Tie) | 26.7 C (80.1 F) | tie | 52 years | 5 of 100 (Routine) |
| 21 April 2026 | New Haven Tweed AP, US | daily low min (Tie) | -1.1 C (30.0 F) | tie | 64 years | 6 of 100 (Routine) |
| 21 April 2026 | New Haven Tweed AP, US | daily low max (Tie) | 8.3 C (46.9 F) | tie | 56 years | 5 of 100 (Routine) |
| 20 April 2026 | New Haven Tweed AP, US | daily low min (Tie) | -0.6 C (30.9 F) | tie | 69 years | 6 of 100 (Routine) |
| 15 April 2026 | New Haven Tweed AP, US | daily high max (Tie) | 25.6 C (78.1 F) | tie | 1 year | 1 of 100 (Routine) |
| 8 April 2026 | New Haven Tweed AP, US | daily low min | -2.8 C (27.0 F) | 0.6 C (1.1 F) | 48 years | 22 of 100 (Routine) |
| 31 March 2026 | New Haven Tweed AP, US | daily high max | 20.0 C (68.0 F) | 1.7 C (3.1 F) | 64 years | 29 of 100 (Routine) |
| 31 March 2026 | New Haven Tweed AP, US | daily high min | 8.3 C (46.9 F) | 0.5 C (0.9 F) | 49 years | 22 of 100 (Routine) |
| 16 March 2026 | New Haven Tweed AP, US | daily rain | 42.7 mm (1.7 in) | 14.3 mm (0.6 in) | 19 years | 23 of 100 (Routine) |
| 8 February 2026 | New Haven Tweed AP, US | daily low max | -9.4 C (15.1 F) | 4.4 C (7.9 F) | 63 years | 34 of 100 (Routine) |
Climate Trend
48 complete years, 1948 to 2024| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1948 | 9.8 C | -1.17 C |
| 1949 | 11.5 C | +0.50 C |
| 1950 | 10.0 C | -0.97 C |
| 1951 | 10.8 C | -0.19 C |
| 1952 | 11.0 C | +0.04 C |
| 1953 | 11.3 C | +0.32 C |
| 1954 | 10.4 C | -0.61 C |
| 1955 | 10.4 C | -0.57 C |
| 1956 | 9.8 C | -1.20 C |
| 1957 | 10.7 C | -0.26 C |
| 1958 | 9.4 C | -1.57 C |
| 1959 | 10.7 C | -0.32 C |
| 1960 | 10.2 C | -0.80 C |
| 1961 | 10.3 C | -0.67 C |
| 1962 | 9.5 C | -1.44 C |
| 1963 | 9.8 C | -1.21 C |
| 1964 | 10.2 C | -0.77 C |
| 1965 | 10.0 C | -0.94 C |
| 1966 | 10.2 C | -0.81 C |
| 1967 | 9.7 C | -1.24 C |
| 1968 | 10.3 C | -0.68 C |
| 1969 | 10.3 C | -0.71 C |
| 1970 | 10.4 C | -0.63 C |
| 1975 | 11.1 C | +0.12 C |
| 1976 | 10.7 C | -0.29 C |
| 2002 | 11.2 C | +0.20 C |
| 2003 | 9.9 C | -1.13 C |
| 2004 | 10.1 C | -0.85 C |
| 2005 | 10.5 C | -0.45 C |
| 2006 | 11.5 C | +0.47 C |
| 2007 | 10.8 C | -0.21 C |
| 2008 | 11.4 C | +0.42 C |
| 2009 | 11.1 C | +0.08 C |
| 2010 | 12.3 C | +1.30 C |
| 2011 | 12.0 C | +1.00 C |
| 2012 | 12.8 C | +1.85 C |
| 2013 | 11.4 C | +0.44 C |
| 2014 | 11.1 C | +0.08 C |
| 2015 | 10.8 C | -0.15 C |
| 2016 | 11.6 C | +0.64 C |
| 2017 | 11.4 C | +0.45 C |
| 2018 | 11.9 C | +0.94 C |
| 2019 | 12.0 C | +1.05 C |
| 2020 | 12.8 C | +1.78 C |
| 2021 | 12.7 C | +1.75 C |
| 2022 | 12.7 C | +1.72 C |
| 2023 | 13.2 C | +2.25 C |
| 2024 | 13.3 C | +2.36 C |
The annual mean temperature here has risen by 0.3 C (0.2 to 0.3) per decade over 1948 to 2024. In Fahrenheit: 0.5 F (0.3 to 0.6) per decade. The slope is a straight line fitted to 48 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.3 C (0.2 to 0.3) per decade | 0.5 F (0.3 to 0.6) per decade | 1948 to 2024 | 48 | Rise |
| Mean daily maximum | 0.3 C (0.2 to 0.3) per decade | 0.5 F (0.3 to 0.6) per decade | 1948 to 2024 | 48 | Rise |
| Mean daily minimum | 0.3 C (0.2 to 0.3) per decade | 0.5 F (0.3 to 0.6) per decade | 1948 to 2024 | 48 | 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
1948 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 38.3 C (100.9 F) | 2011 | 33.9 C (93.0 F) | 56 |
| Coldest night (TNn) | -22.2 C (-8.0 F) | 1948 | -16.1 C (3.0 F) | 56 |
| Wettest day (Rx1day) | 133.1 mm (5.2 in) | 1972 | 69.1 mm (2.7 in) | 56 |
| Wettest five days (Rx5day) | 215.9 mm (8.5 in) | 2005 | 98.4 mm (3.9 in) | 56 |
| Longest dry spell (CDD) | 35 days | 1973 | 18 days | 56 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1948 | 37.8 C (100.0 F) |
| 1949 | 33.9 C (93.0 F) |
| 1950 | 31.1 C (88.0 F) |
| 1951 | 30.6 C (87.1 F) |
| 1952 | 33.9 C (93.0 F) |
| 1953 | 36.1 C (97.0 F) |
| 1954 | 32.8 C (91.0 F) |
| 1955 | 35.0 C (95.0 F) |
| 1956 | 34.4 C (93.9 F) |
| 1957 | 37.8 C (100.0 F) |
| 1958 | 30.6 C (87.1 F) |
| 1959 | 32.2 C (90.0 F) |
| 1960 | 31.1 C (88.0 F) |
| 1961 | 32.8 C (91.0 F) |
| 1962 | 32.2 C (90.0 F) |
| 1963 | 35.0 C (95.0 F) |
| 1964 | 33.9 C (93.0 F) |
| 1965 | 32.8 C (91.0 F) |
| 1966 | 36.1 C (97.0 F) |
| 1967 | 30.0 C (86.0 F) |
| 1968 | 33.3 C (91.9 F) |
| 1969 | 33.3 C (91.9 F) |
| 1970 | 32.8 C (91.0 F) |
| 1971 | 32.8 C (91.0 F) |
| 1972 | 32.2 C (90.0 F) |
| 1973 | 31.1 C (88.0 F) |
| 1974 | 33.9 C (93.0 F) |
| 1975 | 35.0 C (95.0 F) |
| 1976 | 32.2 C (90.0 F) |
| 1977 | 36.1 C (97.0 F) |
| 2001 | 20.6 C (69.1 F) |
| 2002 | 33.9 C (93.0 F) |
| 2003 | 32.2 C (90.0 F) |
| 2004 | 30.0 C (86.0 F) |
| 2005 | 34.4 C (93.9 F) |
| 2006 | 33.9 C (93.0 F) |
| 2007 | 33.3 C (91.9 F) |
| 2008 | 33.9 C (93.0 F) |
| 2009 | 32.2 C (90.0 F) |
| 2010 | 37.8 C (100.0 F) |
| 2011 | 38.3 C (100.9 F) |
| 2012 | 35.0 C (95.0 F) |
| 2013 | 36.1 C (97.0 F) |
| 2014 | 31.7 C (89.1 F) |
| 2015 | 32.8 C (91.0 F) |
| 2016 | 34.4 C (93.9 F) |
| 2017 | 32.2 C (90.0 F) |
| 2018 | 33.9 C (93.0 F) |
| 2019 | 36.1 C (97.0 F) |
| 2020 | 34.4 C (93.9 F) |
| 2021 | 34.4 C (93.9 F) |
| 2022 | 35.0 C (95.0 F) |
| 2023 | 35.0 C (95.0 F) |
| 2024 | 35.0 C (95.0 F) |
| 2025 | 36.7 C (98.1 F) |
| 2026 | 35.0 C (95.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1948 | -22.2 C (-8.0 F) |
| 1949 | -13.3 C (8.1 F) |
| 1950 | -17.8 C (0.0 F) |
| 1951 | -14.4 C (6.1 F) |
| 1952 | -16.1 C (3.0 F) |
| 1953 | -11.1 C (12.0 F) |
| 1954 | -18.3 C (-0.9 F) |
| 1955 | -17.8 C (0.0 F) |
| 1956 | -14.4 C (6.1 F) |
| 1957 | -21.1 C (-6.0 F) |
| 1958 | -17.2 C (1.0 F) |
| 1959 | -16.1 C (3.0 F) |
| 1960 | -15.0 C (5.0 F) |
| 1961 | -21.7 C (-7.1 F) |
| 1962 | -18.9 C (-2.0 F) |
| 1963 | -20.0 C (-4.0 F) |
| 1964 | -13.9 C (7.0 F) |
| 1965 | -17.2 C (1.0 F) |
| 1966 | -15.0 C (5.0 F) |
| 1967 | -19.4 C (-2.9 F) |
| 1968 | -20.6 C (-5.1 F) |
| 1969 | -15.0 C (5.0 F) |
| 1970 | -16.7 C (1.9 F) |
| 1971 | -17.2 C (1.0 F) |
| 1972 | -10.0 C (14.0 F) |
| 1973 | -13.9 C (7.0 F) |
| 1974 | -17.2 C (1.0 F) |
| 1975 | -14.4 C (6.1 F) |
| 1976 | -17.8 C (0.0 F) |
| 1977 | -16.1 C (3.0 F) |
| 2001 | -7.8 C (18.0 F) |
| 2002 | -11.1 C (12.0 F) |
| 2003 | -16.1 C (3.0 F) |
| 2004 | -19.4 C (-2.9 F) |
| 2005 | -18.9 C (-2.0 F) |
| 2006 | -12.7 C (9.1 F) |
| 2007 | -14.9 C (5.2 F) |
| 2008 | -13.8 C (7.2 F) |
| 2009 | -19.9 C (-3.8 F) |
| 2010 | -13.2 C (8.2 F) |
| 2011 | -18.8 C (-1.8 F) |
| 2012 | -12.1 C (10.2 F) |
| 2013 | -14.3 C (6.3 F) |
| 2014 | -16.6 C (2.1 F) |
| 2015 | -19.3 C (-2.7 F) |
| 2016 | -21.0 C (-5.8 F) |
| 2017 | -14.3 C (6.3 F) |
| 2018 | -17.7 C (0.1 F) |
| 2019 | -16.6 C (2.1 F) |
| 2020 | -11.6 C (11.1 F) |
| 2021 | -11.0 C (12.2 F) |
| 2022 | -15.5 C (4.1 F) |
| 2023 | -19.3 C (-2.7 F) |
| 2024 | -12.1 C (10.2 F) |
| 2025 | -14.3 C (6.3 F) |
| 2026 | -17.2 C (1.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1948 | 74.4 mm (2.9 in) |
| 1949 | 41.1 mm (1.6 in) |
| 1950 | 93.2 mm (3.7 in) |
| 1951 | 63.2 mm (2.5 in) |
| 1952 | 58.9 mm (2.3 in) |
| 1953 | 109.0 mm (4.3 in) |
| 1954 | 117.1 mm (4.6 in) |
| 1955 | 82.3 mm (3.2 in) |
| 1956 | 42.9 mm (1.7 in) |
| 1957 | 43.4 mm (1.7 in) |
| 1958 | 56.4 mm (2.2 in) |
| 1959 | 82.3 mm (3.2 in) |
| 1960 | 128.8 mm (5.1 in) |
| 1961 | 45.7 mm (1.8 in) |
| 1962 | 66.0 mm (2.6 in) |
| 1963 | 110.0 mm (4.3 in) |
| 1964 | 43.2 mm (1.7 in) |
| 1965 | 34.3 mm (1.4 in) |
| 1966 | 70.1 mm (2.8 in) |
| 1967 | 53.3 mm (2.1 in) |
| 1968 | 69.3 mm (2.7 in) |
| 1969 | 63.5 mm (2.5 in) |
| 1970 | 58.4 mm (2.3 in) |
| 1971 | 116.6 mm (4.6 in) |
| 1972 | 133.1 mm (5.2 in) |
| 1973 | 53.1 mm (2.1 in) |
| 1974 | 95.5 mm (3.8 in) |
| 1975 | 69.1 mm (2.7 in) |
| 1976 | 77.5 mm (3.1 in) |
| 1977 | 68.6 mm (2.7 in) |
| 2001 | 12.7 mm (0.5 in) |
| 2002 | 72.6 mm (2.9 in) |
| 2003 | 62.5 mm (2.5 in) |
| 2004 | 99.1 mm (3.9 in) |
| 2005 | 80.0 mm (3.1 in) |
| 2006 | 106.7 mm (4.2 in) |
| 2007 | 88.1 mm (3.5 in) |
| 2008 | 84.1 mm (3.3 in) |
| 2009 | 72.6 mm (2.9 in) |
| 2010 | 73.9 mm (2.9 in) |
| 2011 | 69.1 mm (2.7 in) |
| 2012 | 63.8 mm (2.5 in) |
| 2013 | 55.1 mm (2.2 in) |
| 2014 | 69.1 mm (2.7 in) |
| 2015 | 36.1 mm (1.4 in) |
| 2016 | 37.6 mm (1.5 in) |
| 2017 | 76.7 mm (3.0 in) |
| 2018 | 59.9 mm (2.4 in) |
| 2019 | 55.6 mm (2.2 in) |
| 2020 | 40.4 mm (1.6 in) |
| 2021 | 100.8 mm (4.0 in) |
| 2022 | 33.5 mm (1.3 in) |
| 2023 | 78.7 mm (3.1 in) |
| 2024 | 74.2 mm (2.9 in) |
| 2025 | 52.8 mm (2.1 in) |
| 2026 | 90.4 mm (3.6 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1948 | 125.7 mm (4.9 in) |
| 1949 | 127.2 mm (5.0 in) |
| 1950 | 101.8 mm (4.0 in) |
| 1951 | 110.3 mm (4.3 in) |
| 1952 | 98.0 mm (3.9 in) |
| 1953 | 129.8 mm (5.1 in) |
| 1954 | 157.0 mm (6.2 in) |
| 1955 | 150.9 mm (5.9 in) |
| 1956 | 67.6 mm (2.7 in) |
| 1957 | 90.1 mm (3.5 in) |
| 1958 | 125.5 mm (4.9 in) |
| 1959 | 99.1 mm (3.9 in) |
| 1960 | 140.8 mm (5.5 in) |
| 1961 | 64.4 mm (2.5 in) |
| 1962 | 72.7 mm (2.9 in) |
| 1963 | 137.6 mm (5.4 in) |
| 1964 | 58.1 mm (2.3 in) |
| 1965 | 48.8 mm (1.9 in) |
| 1966 | 74.2 mm (2.9 in) |
| 1967 | 84.3 mm (3.3 in) |
| 1968 | 77.0 mm (3.0 in) |
| 1969 | 90.3 mm (3.6 in) |
| 1970 | 88.1 mm (3.5 in) |
| 1971 | 145.8 mm (5.7 in) |
| 1972 | 213.2 mm (8.4 in) |
| 1973 | 87.4 mm (3.4 in) |
| 1974 | 97.6 mm (3.8 in) |
| 1975 | 106.2 mm (4.2 in) |
| 1976 | 99.9 mm (3.9 in) |
| 1977 | 136.4 mm (5.4 in) |
| 2001 | 20.3 mm (0.8 in) |
| 2002 | 133.9 mm (5.3 in) |
| 2003 | 91.7 mm (3.6 in) |
| 2004 | 116.8 mm (4.6 in) |
| 2005 | 215.9 mm (8.5 in) |
| 2006 | 142.3 mm (5.6 in) |
| 2007 | 145.7 mm (5.7 in) |
| 2008 | 100.1 mm (3.9 in) |
| 2009 | 126.7 mm (5.0 in) |
| 2010 | 117.8 mm (4.6 in) |
| 2011 | 93.4 mm (3.7 in) |
| 2012 | 85.9 mm (3.4 in) |
| 2013 | 130.5 mm (5.1 in) |
| 2014 | 81.9 mm (3.2 in) |
| 2015 | 57.9 mm (2.3 in) |
| 2016 | 60.2 mm (2.4 in) |
| 2017 | 88.6 mm (3.5 in) |
| 2018 | 78.7 mm (3.1 in) |
| 2019 | 78.8 mm (3.1 in) |
| 2020 | 60.0 mm (2.4 in) |
| 2021 | 119.4 mm (4.7 in) |
| 2022 | 40.6 mm (1.6 in) |
| 2023 | 98.8 mm (3.9 in) |
| 2024 | 94.7 mm (3.7 in) |
| 2025 | 65.8 mm (2.6 in) |
| 2026 | 115.8 mm (4.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1948 | 28 days |
| 1949 | 29 days |
| 1950 | 17 days |
| 1951 | 12 days |
| 1952 | 26 days |
| 1953 | 26 days |
| 1954 | 13 days |
| 1955 | 18 days |
| 1956 | 23 days |
| 1957 | 23 days |
| 1958 | 21 days |
| 1959 | 27 days |
| 1960 | 18 days |
| 1961 | 15 days |
| 1962 | 14 days |
| 1963 | 28 days |
| 1964 | 15 days |
| 1965 | 15 days |
| 1966 | 17 days |
| 1967 | 22 days |
| 1968 | 21 days |
| 1969 | 16 days |
| 1970 | 25 days |
| 1971 | 18 days |
| 1972 | 17 days |
| 1973 | 35 days |
| 1974 | 15 days |
| 1975 | 14 days |
| 1976 | 23 days |
| 1977 | 18 days |
| 2001 | 11 days |
| 2002 | 17 days |
| 2003 | 26 days |
| 2004 | 25 days |
| 2005 | 15 days |
| 2006 | 29 days |
| 2007 | 22 days |
| 2008 | 15 days |
| 2009 | 14 days |
| 2010 | 16 days |
| 2011 | 15 days |
| 2012 | 14 days |
| 2013 | 24 days |
| 2014 | 20 days |
| 2015 | 24 days |
| 2016 | 16 days |
| 2017 | 13 days |
| 2018 | 14 days |
| 2019 | 18 days |
| 2020 | 18 days |
| 2021 | 16 days |
| 2022 | 17 days |
| 2023 | 20 days |
| 2024 | 33 days |
| 2025 | 18 days |
| 2026 | 19 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
48 years with a frostAcross 48 years with a frost, the median last spring frost at New Haven Tweed AP falls on 13 April and the median first autumn frost on 28 October, which leaves a median of 193 days between them.
Fitted over all years, the growing season changes by +1.7 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1966 to 2024) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 13 April | n/a | 12 April | n/a | -0.7 days per decade |
| First autumn frost | 28 October | n/a | 30 October | n/a | +1.0 days per decade |
| Growing days | 193 days | n/a | 195 days | n/a | +1.7 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
51 years, 1948 to 2025A day with at least 68.1 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 145.8 mm (5.7 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 68.1 mm (2.7 in) | |
| 5 years | 90.9 mm (3.6 in) | |
| 10 years | 105.1 mm (4.1 in) | |
| 25 years | 122.2 mm (4.8 in) | |
| 50 years | 134.3 mm (5.3 in) | |
| 100 years | 145.8 mm (5.7 in) | Longer than the 51 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, 51 years of values from 1948 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: 133.1 mm (5.2 in) in 1972; 128.8 mm (5.1 in) in 1960; 117.1 mm (4.6 in) in 1954.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of New Haven Tweed AP, at 2019. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2019 ran 0.5 C (0.8 F) higher than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2019 | +0.5 | +0.8 | possible | 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-15).