Niagara Falls Intl AP Weather Records (USW00004724)
Record envelope, standing records and threshold days for Niagara Falls Intl AP (USW00004724), New York, United States, with 76 years of record.
Key Facts for Niagara Falls Intl AP
- Niagara Falls Intl AP (USW00004724) is a weather station in New York, United States at 43.11 latitude and -78.94 longitude, 178 m (585 ft) above sea level.
- The station reports from 1951 to 2026, 76 years of record.
- 1,464 records set at Niagara Falls Intl AP still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Niagara Falls Intl AP set a daily record precipitation of 26.8 mm (1.1 in) on 2 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: New York, United States, 43.11 latitude, -78.94 longitude.
- Elevation: 178 m (585 ft).
- Period of record: 1951 to 2026, 76 years.
- Eligible elements: tmax, tmin, prcp.
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 | 18.3 C (64.9 F) | -26.7 C (-16.1 F) | 14.4 C (57.9 F) | -18.3 C (-0.9 F) |
| Feb | 20.0 C (68.0 F) | -24.9 C (-12.8 F) | 6.7 C (44.1 F) | -20.6 C (-5.1 F) |
| Mar | 27.2 C (81.0 F) | -22.2 C (-8.0 F) | 20.6 C (69.1 F) | -12.8 C (9.0 F) |
| Apr | 30.0 C (86.0 F) | -11.1 C (12.0 F) | 25.0 C (77.0 F) | -6.1 C (21.0 F) |
| May | 33.9 C (93.0 F) | -4.3 C (24.3 F) | 30.6 C (87.1 F) | -1.1 C (30.0 F) |
| Jun | 35.0 C (95.0 F) | 2.8 C (37.0 F) | 32.2 C (90.0 F) | 7.2 C (45.0 F) |
| Jul | 36.1 C (97.0 F) | 7.8 C (46.0 F) | 28.9 C (84.0 F) | 10.0 C (50.0 F) |
| Aug | 35.0 C (95.0 F) | 7.2 C (45.0 F) | 30.0 C (86.0 F) | 11.7 C (53.1 F) |
| Sep | 35.6 C (96.1 F) | -1.1 C (30.0 F) | 27.8 C (82.0 F) | 5.0 C (41.0 F) |
| Oct | 29.4 C (84.9 F) | -5.0 C (23.0 F) | 23.3 C (73.9 F) | 2.8 C (37.0 F) |
| Nov | 26.7 C (80.1 F) | -18.9 C (-2.0 F) | n/a | n/a |
| Dec | 22.2 C (72.0 F) | -20.0 C (-4.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1951 | 39 |
| 1952 | 36 |
| 1953 | 42 |
| 1954 | 42 |
| 1955 | 33 |
| 1956 | 45 |
| 1957 | 53 |
| 1958 | 36 |
| 1959 | 36 |
| 1960 | 20 |
| 1961 | 6 |
| 1962 | 7 |
| 1963 | 44 |
| 1964 | 14 |
| 1968 | 4 |
| 1969 | 21 |
| 1970 | 31 |
| 2001 | 16 |
| 2002 | 56 |
| 2003 | 37 |
| 2004 | 40 |
| 2005 | 51 |
| 2006 | 28 |
| 2007 | 47 |
| 2008 | 24 |
| 2009 | 29 |
| 2010 | 24 |
| 2011 | 29 |
| 2012 | 40 |
| 2013 | 31 |
| 2014 | 43 |
| 2015 | 56 |
| 2016 | 58 |
| 2017 | 45 |
| 2018 | 48 |
| 2019 | 30 |
| 2020 | 35 |
| 2021 | 49 |
| 2022 | 23 |
| 2023 | 34 |
| 2024 | 46 |
| 2025 | 18 |
| 2026 | 18 |
Wettest Day of Each Month
Jul: 95.0 mm (3.7 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 35.8 mm (1.4 in) | 22 January 1957 |
| Feb | 79.5 mm (3.1 in) | 16 February 1954 |
| Mar | 58.4 mm (2.3 in) | 3 March 1953 |
| Apr | 46.2 mm (1.8 in) | 23 April 2012 |
| May | 47.2 mm (1.9 in) | 19 May 1957 |
| Jun | 64.0 mm (2.5 in) | 28 June 1957 |
| Jul | 95.0 mm (3.7 in) | 30 July 2014 |
| Aug | 82.3 mm (3.2 in) | 27 August 1959 |
| Sep | 76.2 mm (3.0 in) | 9 September 2004 |
| Oct | 61.5 mm (2.4 in) | 15 October 1954 |
| Nov | 39.6 mm (1.6 in) | 1 November 2018 |
| Dec | 42.7 mm (1.7 in) | 1 December 2006 |
Period of Record Coverage
1951 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1951 | 197 | 54% | No |
| 1952 | 364 | 99% | Yes |
| 1953 | 363 | 99% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 213 | 58% | No |
| 1961 | 72 | 20% | No |
| 1962 | 106 | 29% | No |
| 1963 | 363 | 99% | Yes |
| 1964 | 190 | 52% | No |
| 1968 | 39 | 11% | No |
| 1969 | 330 | 90% | Yes |
| 1970 | 358 | 98% | Yes |
| 2001 | 122 | 33% | No |
| 2002 | 363 | 99% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 365 | 100% | Yes |
| 2005 | 364 | 100% | Yes |
| 2006 | 363 | 99% | Yes |
| 2007 | 364 | 100% | Yes |
| 2008 | 361 | 99% | Yes |
| 2009 | 364 | 100% | Yes |
| 2010 | 364 | 100% | Yes |
| 2011 | 364 | 100% | Yes |
| 2012 | 364 | 99% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 355 | 97% | Yes |
| 2017 | 363 | 99% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 363 | 99% | Yes |
| 2020 | 344 | 94% | Yes |
| 2021 | 364 | 100% | Yes |
| 2022 | 364 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 355 | 97% | Yes |
| 2026 | 260 | 71% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 2 October 2026 | Niagara Falls Intl AP, US | daily rain (Provisional) | 26.8 mm (1.1 in) | 11.3 mm (0.4 in) | 21 years | 27 of 100 (Routine) |
| 16 September 2026 | Niagara Falls Intl AP, US | daily high min (Tie, Provisional) | 19.4 C (66.9 F) | tie | 56 years | 6 of 100 (Routine) |
| 13 September 2026 | Niagara Falls Intl AP, US | daily high min (Provisional) | 20.6 C (69.1 F) | 1.7 C (3.1 F) | 56 years | 27 of 100 (Routine) |
| 24 August 2026 | Niagara Falls Intl AP, US | daily low max (Provisional) | 19.4 C (66.9 F) | 1.7 C (3.1 F) | 69 years | 32 of 100 (Routine) |
| 23 August 2026 | Niagara Falls Intl AP, US | daily rain (Provisional) | 34.9 mm (1.4 in) | 2.4 mm (0.09 in) | 69 years | 28 of 100 (Routine) |
| 19 August 2026 | Niagara Falls Intl AP, US | daily rain (Provisional) | 27.3 mm (1.1 in) | 11.6 mm (0.5 in) | 56 years | 32 of 100 (Routine) |
| 2 August 2026 | Niagara Falls Intl AP, US | daily rain | 54.7 mm (2.2 in) | 39.0 mm (1.5 in) | 5 years | 40 of 100 (Notable) |
| 23 July 2026 | Niagara Falls Intl AP, US | daily low min | 10.0 C (50.0 F) | 1.7 C (3.1 F) | 11 years | 15 of 100 (Routine) |
| 22 July 2026 | Niagara Falls Intl AP, US | daily low max | 21.1 C (70.0 F) | 0.6 C (1.1 F) | 20 years | 14 of 100 (Routine) |
| 21 July 2026 | Niagara Falls Intl AP, US | daily rain | 47.3 mm (1.9 in) | 37.1 mm (1.5 in) | 68 years | 57 of 100 (Notable) |
| 30 June 2026 | Niagara Falls Intl AP, US | daily high min (Tie) | 21.7 C (71.1 F) | tie | 8 years | 2 of 100 (Routine) |
| 22 June 2026 | Niagara Falls Intl AP, US | daily low max | 18.9 C (66.0 F) | 0.5 C (0.9 F) | 4 years | 9 of 100 (Routine) |
| 10 June 2026 | Niagara Falls Intl AP, US | daily high min | 22.2 C (72.0 F) | 1.6 C (2.9 F) | 20 years | 17 of 100 (Routine) |
| 19 May 2026 | Niagara Falls Intl AP, US | daily high min | 17.8 C (64.0 F) | 4.5 C (8.1 F) | 67 years | 37 of 100 (Notable) |
| 18 May 2026 | Niagara Falls Intl AP, US | daily high max | 30.6 C (87.1 F) | 0.6 C (1.1 F) | 8 years | 10 of 100 (Routine) |
| 14 May 2026 | Niagara Falls Intl AP, US | daily low max | 8.3 C (46.9 F) | 1.1 C (2.0 F) | 24 years | 15 of 100 (Routine) |
| 2 May 2026 | Niagara Falls Intl AP, US | daily low min | -1.1 C (30.0 F) | 1.7 C (3.1 F) | 68 years | 30 of 100 (Routine) |
| 1 May 2026 | Niagara Falls Intl AP, US | daily low max | 7.2 C (45.0 F) | 1.1 C (2.0 F) | 72 years | 29 of 100 (Routine) |
| 13 April 2026 | Niagara Falls Intl AP, US | daily high min | 13.9 C (57.0 F) | 1.1 C (2.0 F) | 61 years | 27 of 100 (Routine) |
| 8 April 2026 | Niagara Falls Intl AP, US | daily low min | -6.1 C (21.0 F) | 0.6 C (1.1 F) | 19 years | 13 of 100 (Routine) |
Climate Trend
34 complete years, 1952 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1952 | 9.3 C | -0.06 C |
| 1953 | 9.7 C | +0.29 C |
| 1954 | 8.7 C | -0.69 C |
| 1955 | 9.3 C | -0.03 C |
| 1956 | 8.4 C | -1.01 C |
| 1957 | 9.0 C | -0.36 C |
| 1958 | 8.1 C | -1.24 C |
| 1959 | 9.0 C | -0.40 C |
| 1963 | 8.0 C | -1.35 C |
| 1970 | 9.6 C | +0.21 C |
| 2002 | 9.3 C | -0.02 C |
| 2003 | 8.0 C | -1.40 C |
| 2004 | 8.5 C | -0.83 C |
| 2005 | 9.4 C | +0.03 C |
| 2006 | 10.1 C | +0.71 C |
| 2007 | 9.0 C | -0.32 C |
| 2008 | 8.7 C | -0.68 C |
| 2009 | 8.5 C | -0.83 C |
| 2010 | 9.7 C | +0.36 C |
| 2011 | 9.5 C | +0.11 C |
| 2012 | 10.7 C | +1.36 C |
| 2013 | 8.7 C | -0.67 C |
| 2014 | 7.9 C | -1.48 C |
| 2015 | 8.7 C | -0.67 C |
| 2016 | 11.1 C | +1.75 C |
| 2017 | 10.6 C | +1.23 C |
| 2018 | 9.8 C | +0.43 C |
| 2019 | 8.4 C | -0.93 C |
| 2020 | 9.8 C | +0.48 C |
| 2021 | 10.6 C | +1.23 C |
| 2022 | 10.0 C | +0.62 C |
| 2023 | 11.0 C | +1.64 C |
| 2024 | 11.9 C | +2.55 C |
| 2025 | 9.5 C | +0.14 C |
The annual mean temperature here has risen by 0.15 C (0.03 to 0.27) per decade over 1952 to 2025. In Fahrenheit: 0.3 F (0.1 to 0.5) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.15 C (0.03 to 0.27) per decade | 0.3 F (0.1 to 0.5) per decade | 1952 to 2025 | 34 | Rise |
| Mean daily maximum | 0.2 C (0.1 to 0.3) per decade | 0.3 F (0.1 to 0.5) per decade | 1952 to 2025 | 34 | Rise |
| Mean daily minimum | 0.12 C (-0.01 to 0.25) per decade | 0.21 F (-0.02 to 0.44) per decade | 1952 to 2025 | 34 | Not clearly different from zero |
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
1951 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 36.1 C (97.0 F) | 2005 | 33.3 C (91.9 F) | 43 |
| Coldest night (TNn) | -26.7 C (-16.1 F) | 1957 | -19.3 C (-2.7 F) | 43 |
| Wettest day (Rx1day) | 95.0 mm (3.7 in) | 2014 | 42.2 mm (1.7 in) | 43 |
| Wettest five days (Rx5day) | 137.4 mm (5.4 in) | 2014 | 65.0 mm (2.6 in) | 43 |
| Longest dry spell (CDD) | 31 days | 1952 | 16 days | 43 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1951 | 32.2 C (90.0 F) |
| 1952 | 33.9 C (93.0 F) |
| 1953 | 35.6 C (96.1 F) |
| 1954 | 32.2 C (90.0 F) |
| 1955 | 34.4 C (93.9 F) |
| 1956 | 32.2 C (90.0 F) |
| 1957 | 33.9 C (93.0 F) |
| 1958 | 31.1 C (88.0 F) |
| 1959 | 33.9 C (93.0 F) |
| 1960 | 31.1 C (88.0 F) |
| 1961 | 26.1 C (79.0 F) |
| 1962 | 26.7 C (80.1 F) |
| 1963 | 33.9 C (93.0 F) |
| 1964 | 32.2 C (90.0 F) |
| 1968 | 13.9 C (57.0 F) |
| 1969 | 33.3 C (91.9 F) |
| 1970 | 31.7 C (89.1 F) |
| 2001 | 31.7 C (89.1 F) |
| 2002 | 33.9 C (93.0 F) |
| 2003 | 31.1 C (88.0 F) |
| 2004 | 31.1 C (88.0 F) |
| 2005 | 36.1 C (97.0 F) |
| 2006 | 33.3 C (91.9 F) |
| 2007 | 34.4 C (93.9 F) |
| 2008 | 32.2 C (90.0 F) |
| 2009 | 31.1 C (88.0 F) |
| 2010 | 33.3 C (91.9 F) |
| 2011 | 35.0 C (95.0 F) |
| 2012 | 35.0 C (95.0 F) |
| 2013 | 33.3 C (91.9 F) |
| 2014 | 31.1 C (88.0 F) |
| 2015 | 32.2 C (90.0 F) |
| 2016 | 35.6 C (96.1 F) |
| 2017 | 33.9 C (93.0 F) |
| 2018 | 35.6 C (96.1 F) |
| 2019 | 33.3 C (91.9 F) |
| 2020 | 35.0 C (95.0 F) |
| 2021 | 33.9 C (93.0 F) |
| 2022 | 33.3 C (91.9 F) |
| 2023 | 32.8 C (91.0 F) |
| 2024 | 33.3 C (91.9 F) |
| 2025 | 33.9 C (93.0 F) |
| 2026 | 32.2 C (90.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1951 | -18.9 C (-2.0 F) |
| 1952 | -16.1 C (3.0 F) |
| 1953 | -13.3 C (8.1 F) |
| 1954 | -19.4 C (-2.9 F) |
| 1955 | -20.0 C (-4.0 F) |
| 1956 | -15.6 C (3.9 F) |
| 1957 | -26.7 C (-16.1 F) |
| 1958 | -19.4 C (-2.9 F) |
| 1959 | -18.3 C (-0.9 F) |
| 1960 | -22.2 C (-8.0 F) |
| 1961 | -15.6 C (3.9 F) |
| 1962 | -18.9 C (-2.0 F) |
| 1963 | -21.1 C (-6.0 F) |
| 1964 | -16.1 C (3.0 F) |
| 1968 | -16.7 C (1.9 F) |
| 1969 | -18.9 C (-2.0 F) |
| 1970 | -21.1 C (-6.0 F) |
| 2001 | -10.0 C (14.0 F) |
| 2002 | -18.9 C (-2.0 F) |
| 2003 | -25.0 C (-13.0 F) |
| 2004 | -23.3 C (-9.9 F) |
| 2005 | -23.9 C (-11.0 F) |
| 2006 | -14.3 C (6.3 F) |
| 2007 | -18.2 C (-0.8 F) |
| 2008 | -18.2 C (-0.8 F) |
| 2009 | -21.6 C (-6.9 F) |
| 2010 | -18.2 C (-0.8 F) |
| 2011 | -24.4 C (-11.9 F) |
| 2012 | -18.3 C (-0.9 F) |
| 2013 | -19.3 C (-2.7 F) |
| 2014 | -23.2 C (-9.8 F) |
| 2015 | -24.9 C (-12.8 F) |
| 2016 | -24.3 C (-11.7 F) |
| 2017 | -19.3 C (-2.7 F) |
| 2018 | -18.8 C (-1.8 F) |
| 2019 | -19.9 C (-3.8 F) |
| 2020 | -16.6 C (2.1 F) |
| 2021 | -19.3 C (-2.7 F) |
| 2022 | -21.6 C (-6.9 F) |
| 2023 | -16.0 C (3.2 F) |
| 2024 | -16.6 C (2.1 F) |
| 2025 | -19.3 C (-2.7 F) |
| 2026 | -20.6 C (-5.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1951 | 39.4 mm (1.6 in) |
| 1952 | 36.3 mm (1.4 in) |
| 1953 | 58.4 mm (2.3 in) |
| 1954 | 79.5 mm (3.1 in) |
| 1955 | 46.7 mm (1.8 in) |
| 1956 | 66.0 mm (2.6 in) |
| 1957 | 64.0 mm (2.5 in) |
| 1958 | 43.7 mm (1.7 in) |
| 1959 | 82.3 mm (3.2 in) |
| 1960 | 24.4 mm (1.0 in) |
| 1961 | 18.5 mm (0.7 in) |
| 1962 | 27.9 mm (1.1 in) |
| 1963 | 47.2 mm (1.9 in) |
| 1964 | 28.4 mm (1.1 in) |
| 1968 | 34.8 mm (1.4 in) |
| 1969 | 30.5 mm (1.2 in) |
| 1970 | 41.7 mm (1.6 in) |
| 2001 | 22.9 mm (0.9 in) |
| 2002 | 39.4 mm (1.6 in) |
| 2003 | 25.9 mm (1.0 in) |
| 2004 | 76.2 mm (3.0 in) |
| 2005 | 61.0 mm (2.4 in) |
| 2006 | 46.0 mm (1.8 in) |
| 2007 | 37.1 mm (1.5 in) |
| 2008 | 24.4 mm (1.0 in) |
| 2009 | 59.9 mm (2.4 in) |
| 2010 | 26.2 mm (1.0 in) |
| 2011 | 37.1 mm (1.5 in) |
| 2012 | 50.3 mm (2.0 in) |
| 2013 | 93.2 mm (3.7 in) |
| 2014 | 95.0 mm (3.7 in) |
| 2015 | 54.9 mm (2.2 in) |
| 2016 | 42.2 mm (1.7 in) |
| 2017 | 52.8 mm (2.1 in) |
| 2018 | 40.6 mm (1.6 in) |
| 2019 | 38.9 mm (1.5 in) |
| 2020 | 24.4 mm (1.0 in) |
| 2021 | 59.7 mm (2.4 in) |
| 2022 | 24.9 mm (1.0 in) |
| 2023 | 25.7 mm (1.0 in) |
| 2024 | 63.2 mm (2.5 in) |
| 2025 | 44.2 mm (1.7 in) |
| 2026 | 54.7 mm (2.2 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1951 | 77.2 mm (3.0 in) |
| 1952 | 45.3 mm (1.8 in) |
| 1953 | 73.2 mm (2.9 in) |
| 1954 | 111.4 mm (4.4 in) |
| 1955 | 79.8 mm (3.1 in) |
| 1956 | 121.4 mm (4.8 in) |
| 1957 | 75.6 mm (3.0 in) |
| 1958 | 57.4 mm (2.3 in) |
| 1959 | 89.7 mm (3.5 in) |
| 1960 | 62.1 mm (2.4 in) |
| 1961 | 36.8 mm (1.4 in) |
| 1962 | 45.2 mm (1.8 in) |
| 1963 | 62.4 mm (2.5 in) |
| 1964 | 47.2 mm (1.9 in) |
| 1968 | 39.4 mm (1.6 in) |
| 1969 | 55.4 mm (2.2 in) |
| 1970 | 74.7 mm (2.9 in) |
| 2001 | 52.3 mm (2.1 in) |
| 2002 | 68.1 mm (2.7 in) |
| 2003 | 41.9 mm (1.6 in) |
| 2004 | 89.2 mm (3.5 in) |
| 2005 | 85.1 mm (3.4 in) |
| 2006 | 70.3 mm (2.8 in) |
| 2007 | 52.1 mm (2.1 in) |
| 2008 | 51.3 mm (2.0 in) |
| 2009 | 100.1 mm (3.9 in) |
| 2010 | 49.6 mm (2.0 in) |
| 2011 | 80.7 mm (3.2 in) |
| 2012 | 88.5 mm (3.5 in) |
| 2013 | 106.4 mm (4.2 in) |
| 2014 | 137.4 mm (5.4 in) |
| 2015 | 71.0 mm (2.8 in) |
| 2016 | 42.2 mm (1.7 in) |
| 2017 | 82.4 mm (3.2 in) |
| 2018 | 79.2 mm (3.1 in) |
| 2019 | 54.9 mm (2.2 in) |
| 2020 | 33.8 mm (1.3 in) |
| 2021 | 106.0 mm (4.2 in) |
| 2022 | 34.4 mm (1.4 in) |
| 2023 | 48.5 mm (1.9 in) |
| 2024 | 65.0 mm (2.6 in) |
| 2025 | 60.8 mm (2.4 in) |
| 2026 | 25.9 mm (1.0 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1951 | 17 days |
| 1952 | 31 days |
| 1953 | 19 days |
| 1954 | 13 days |
| 1955 | 19 days |
| 1956 | 18 days |
| 1957 | 23 days |
| 1958 | 15 days |
| 1959 | 19 days |
| 1960 | 14 days |
| 1961 | 9 days |
| 1962 | 11 days |
| 1963 | 29 days |
| 1964 | 8 days |
| 1968 | 5 days |
| 1969 | 26 days |
| 1970 | 16 days |
| 2001 | 8 days |
| 2002 | 26 days |
| 2003 | 13 days |
| 2004 | 15 days |
| 2005 | 16 days |
| 2006 | 12 days |
| 2007 | 14 days |
| 2008 | 14 days |
| 2009 | 22 days |
| 2010 | 13 days |
| 2011 | 17 days |
| 2012 | 19 days |
| 2013 | 16 days |
| 2014 | 15 days |
| 2015 | 19 days |
| 2016 | 20 days |
| 2017 | 18 days |
| 2018 | 13 days |
| 2019 | 11 days |
| 2020 | 16 days |
| 2021 | 20 days |
| 2022 | 15 days |
| 2023 | 22 days |
| 2024 | 17 days |
| 2025 | 10 days |
| 2026 | 2 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
34 years with a frostAcross 34 years with a frost, the median last spring frost at Niagara Falls Intl AP falls on 30 April and the median first autumn frost on 18 October, which leaves a median of 171 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 (1956 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 30 April | n/a | 1 May | n/a | +0.4 days per decade |
| First autumn frost | 18 October | n/a | 19 October | n/a | +2.1 days per decade |
| Growing days | 171 days | n/a | 169 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
34 years, 1952 to 2024A day with at least 46.7 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 112.4 mm (4.4 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 46.7 mm (1.8 in) | |
| 5 years | 64.9 mm (2.6 in) | |
| 10 years | 76.6 mm (3.0 in) | |
| 25 years | 91.3 mm (3.6 in) | |
| 50 years | 101.9 mm (4.0 in) | Longer than the 34 years of record |
| 100 years | 112.4 mm (4.4 in) | Longer than the 34 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, 34 years of values from 1952 to 2024.
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: 95.0 mm (3.7 in) in 2014; 93.2 mm (3.7 in) in 2013; 82.3 mm (3.2 in) in 1959.
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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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-16).