Avalon Catalina AP Weather Records (USW00023191)
Record envelope, standing records and threshold days for Avalon Catalina AP (USW00023191), California, United States, with 79 years of record.
Key Facts for Avalon Catalina AP
- Avalon Catalina AP (USW00023191) is a weather station in California, United States at 33.40 latitude and -118.41 longitude, 477 m (1,565 ft) above sea level.
- The station reports from 1948 to 2026, 79 years of record.
- 1,464 records set at Avalon Catalina AP still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Avalon Catalina AP set a daily record high minimum temperature of 26.1 C (79.0 F) on 7 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: California, United States, 33.40 latitude, -118.41 longitude.
- Elevation: 477 m (1,565 ft).
- Period of record: 1948 to 2026, 79 years.
- Eligible elements: tmax, tmin, prcp.
Daily Record Envelope and 2026
16 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 29.4 C (84.9 F) | -1.7 C (28.9 F) | 25.6 C (78.1 F) | 8.3 C (46.9 F) |
| Feb | 30.6 C (87.1 F) | 0.0 C (32.0 F) | 28.9 C (84.0 F) | 6.1 C (43.0 F) |
| Mar | 32.8 C (91.0 F) | -3.3 C (26.1 F) | 32.8 C (91.0 F) | 8.9 C (48.0 F) |
| Apr | 33.3 C (91.9 F) | 3.9 C (39.0 F) | 26.7 C (80.1 F) | 8.3 C (46.9 F) |
| May | 35.6 C (96.1 F) | 6.1 C (43.0 F) | 26.1 C (79.0 F) | 9.4 C (48.9 F) |
| Jun | 38.9 C (102.0 F) | 7.2 C (45.0 F) | 28.9 C (84.0 F) | 11.7 C (53.1 F) |
| Jul | 41.1 C (106.0 F) | 9.4 C (48.9 F) | 33.3 C (91.9 F) | 12.2 C (54.0 F) |
| Aug | 39.4 C (102.9 F) | 10.0 C (50.0 F) | 35.0 C (95.0 F) | 15.0 C (59.0 F) |
| Sep | 43.3 C (109.9 F) | 8.9 C (48.0 F) | 36.1 C (97.0 F) | 13.9 C (57.0 F) |
| Oct | 37.2 C (99.0 F) | 5.0 C (41.0 F) | 36.1 C (97.0 F) | 12.8 C (55.0 F) |
| Nov | 32.8 C (91.0 F) | 2.8 C (37.0 F) | n/a | n/a |
| Dec | 27.2 C (81.0 F) | 1.1 C (34.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1948 | 91 |
| 1949 | 116 |
| 1950 | 59 |
| 1951 | 62 |
| 1952 | 71 |
| 1953 | 25 |
| 1963 | 36 |
| 1964 | 54 |
| 1965 | 62 |
| 1966 | 26 |
| 1967 | 68 |
| 1968 | 8 |
| 1976 | 4 |
| 2000 | 26 |
| 2001 | 23 |
| 2002 | 34 |
| 2003 | 25 |
| 2004 | 29 |
| 2005 | 24 |
| 2006 | 39 |
| 2007 | 32 |
| 2008 | 32 |
| 2009 | 30 |
| 2010 | 68 |
| 2011 | 25 |
| 2012 | 25 |
| 2013 | 24 |
| 2014 | 21 |
| 2015 | 34 |
| 2016 | 32 |
| 2017 | 36 |
| 2018 | 28 |
| 2019 | 21 |
| 2020 | 44 |
| 2021 | 22 |
| 2022 | 28 |
| 2023 | 15 |
| 2024 | 27 |
| 2025 | 18 |
| 2026 | 20 |
All-Time Record Progression
2 new records| Date | Kind | Detail |
|---|---|---|
| 2020-09-06 | Record high maximum temperature | Record high maximum temperature 43.3 C (109.9 F) |
| 2020-09-06 | Record high minimum temperature | Record high minimum temperature 32.8 C (91.0 F) |
Wettest Day of Each Month
Dec: 112.8 mm (4.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 71.4 mm (2.8 in) | 22 January 2017 |
| Feb | 57.9 mm (2.3 in) | 11 February 2005 |
| Mar | 76.7 mm (3.0 in) | 15 March 2003 |
| Apr | 27.4 mm (1.1 in) | 28 April 2005 |
| May | 14.0 mm (0.6 in) | 22 May 2006 |
| Jun | 6.6 mm (0.26 in) | 21 June 2019 |
| Jul | 8.4 mm (0.33 in) | 18 July 2015 |
| Aug | 102.6 mm (4.0 in) | 20 August 2023 |
| Sep | 29.5 mm (1.2 in) | 17 September 1963 |
| Oct | 36.3 mm (1.4 in) | 19 October 2010 |
| Nov | 66.0 mm (2.6 in) | 21 November 1967 |
| Dec | 112.8 mm (4.4 in) | 28 December 2004 |
Period of Record Coverage
1948 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 165 | 45% | No |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 83 | 23% | No |
| 1976 | 6 | 2% | No |
| 2000 | 208 | 57% | No |
| 2001 | 363 | 99% | Yes |
| 2002 | 361 | 99% | Yes |
| 2003 | 361 | 99% | Yes |
| 2004 | 365 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 360 | 99% | Yes |
| 2007 | 359 | 98% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 362 | 99% | Yes |
| 2010 | 359 | 98% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 362 | 99% | Yes |
| 2013 | 361 | 99% | Yes |
| 2014 | 360 | 99% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 360 | 98% | Yes |
| 2017 | 354 | 97% | Yes |
| 2018 | 363 | 99% | Yes |
| 2019 | 358 | 98% | Yes |
| 2020 | 363 | 99% | Yes |
| 2021 | 340 | 93% | Yes |
| 2022 | 349 | 96% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 365 | 100% | Yes |
| 2025 | 356 | 98% | Yes |
| 2026 | 284 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 7 October 2026 | Avalon Catalina AP, US | daily high min (Provisional) | 26.1 C (79.0 F) | 1.7 C (3.1 F) | 24 years | 17 of 100 (Routine) |
| 5 October 2026 | Avalon Catalina AP, US | daily high max (Provisional) | 35.6 C (96.1 F) | 1.7 C (3.1 F) | 61 years | 28 of 100 (Routine) |
| 5 October 2026 | Avalon Catalina AP, US | daily high min (Provisional) | 27.2 C (81.0 F) | 1.1 C (2.0 F) | 61 years | 27 of 100 (Routine) |
| 4 October 2026 | Avalon Catalina AP, US | daily high min (Provisional) | 26.1 C (79.0 F) | 0.5 C (0.9 F) | 61 years | 26 of 100 (Routine) |
| 3 October 2026 | Avalon Catalina AP, US | daily high min (Provisional) | 27.2 C (81.0 F) | 2.8 C (5.0 F) | 61 years | 31 of 100 (Routine) |
| 3 October 2026 | Avalon Catalina AP, US | daily high max (Provisional) | 36.1 C (97.0 F) | 1.1 C (2.0 F) | 1 year | 8 of 100 (Routine) |
| 2 October 2026 | Avalon Catalina AP, US | daily high max (Provisional) | 36.1 C (97.0 F) | 0.5 C (0.9 F) | 5 years | 8 of 100 (Routine) |
| 10 September 2026 | Avalon Catalina AP, US | daily high min (Tie, Provisional) | 25.6 C (78.1 F) | tie | 63 years | 6 of 100 (Routine) |
| 9 September 2026 | Avalon Catalina AP, US | daily high min (Provisional) | 27.8 C (82.0 F) | 1.1 C (2.0 F) | 1 year | 9 of 100 (Routine) |
| 9 September 2026 | Avalon Catalina AP, US | daily high max (Tie, Provisional) | 36.1 C (97.0 F) | tie | 1 year | 1 of 100 (Routine) |
| 26 August 2026 | Avalon Catalina AP, US | daily high min (Provisional) | 27.8 C (82.0 F) | 2.2 C (4.0 F) | 16 years | 16 of 100 (Routine) |
| 26 August 2026 | Avalon Catalina AP, US | daily high max (Tie, Provisional) | 35.0 C (95.0 F) | tie | 15 years | 2 of 100 (Routine) |
| 25 August 2026 | Avalon Catalina AP, US | daily high min (Provisional) | 25.0 C (77.0 F) | 0.6 C (1.1 F) | 16 years | 12 of 100 (Routine) |
| 23 August 2026 | Avalon Catalina AP, US | daily high min (Tie, Provisional) | 24.4 C (75.9 F) | tie | 20 years | 3 of 100 (Routine) |
| 22 August 2026 | Avalon Catalina AP, US | daily high min (Tie, Provisional) | 23.3 C (73.9 F) | tie | 20 years | 3 of 100 (Routine) |
| 13 August 2026 | Avalon Catalina AP, US | daily low max (Tie) | 20.6 C (69.1 F) | tie | 20 years | 3 of 100 (Routine) |
| 30 June 2026 | Avalon Catalina AP, US | daily low max | 17.2 C (63.0 F) | 1.1 C (2.0 F) | 21 years | 15 of 100 (Routine) |
| 18 June 2026 | Avalon Catalina AP, US | daily low max | 13.9 C (57.0 F) | 2.2 C (4.0 F) | 60 years | 29 of 100 (Routine) |
| 12 June 2026 | Avalon Catalina AP, US | daily high max | 28.9 C (84.0 F) | 1.7 C (3.1 F) | 7 years | 12 of 100 (Routine) |
| 5 April 2026 | Avalon Catalina AP, US | daily high min (Tie) | 17.2 C (63.0 F) | tie | 9 years | 2 of 100 (Routine) |
Climate Trend
33 complete years, 1948 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1948 | 15.0 C | -1.17 C |
| 1949 | 15.4 C | -0.77 C |
| 1950 | 15.8 C | -0.40 C |
| 1951 | 15.0 C | -1.20 C |
| 1952 | 15.4 C | -0.83 C |
| 1963 | 16.4 C | +0.17 C |
| 1964 | 16.2 C | +0.02 C |
| 1965 | 15.9 C | -0.29 C |
| 1966 | 16.3 C | +0.07 C |
| 1967 | 16.3 C | +0.04 C |
| 2001 | 15.4 C | -0.78 C |
| 2002 | 15.6 C | -0.65 C |
| 2003 | 16.5 C | +0.32 C |
| 2004 | 15.7 C | -0.50 C |
| 2005 | 15.7 C | -0.56 C |
| 2006 | 16.5 C | +0.24 C |
| 2007 | 16.0 C | -0.18 C |
| 2008 | 16.6 C | +0.37 C |
| 2009 | 16.4 C | +0.22 C |
| 2010 | 15.1 C | -1.15 C |
| 2011 | 15.7 C | -0.51 C |
| 2012 | 16.8 C | +0.62 C |
| 2013 | 16.6 C | +0.39 C |
| 2014 | 17.5 C | +1.29 C |
| 2015 | 17.5 C | +1.30 C |
| 2016 | 17.1 C | +0.85 C |
| 2018 | 17.1 C | +0.85 C |
| 2019 | 16.2 C | -0.04 C |
| 2020 | 17.6 C | +1.41 C |
| 2021 | 16.6 C | +0.40 C |
| 2023 | 16.2 C | -0.06 C |
| 2024 | 16.6 C | +0.36 C |
| 2025 | 16.3 C | +0.05 C |
The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1948 to 2025. In Fahrenheit: 0.3 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.1 C (0.1 to 0.2) per decade | 0.3 F (0.1 to 0.4) per decade | 1948 to 2025 | 33 | Rise |
| Mean daily maximum | 0.12 C (0.03 to 0.21) per decade | 0.2 F (0.1 to 0.4) per decade | 1948 to 2025 | 33 | Rise |
| Mean daily minimum | 0.2 C (0.1 to 0.2) per decade | 0.3 F (0.2 to 0.4) per decade | 1948 to 2025 | 33 | 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) | 43.3 C (109.9 F) | 2020 | 36.4 C (97.5 F) | 40 |
| Coldest night (TNn) | -3.3 C (26.1 F) | 1976 | 3.9 C (39.0 F) | 40 |
| Wettest day (Rx1day) | 112.8 mm (4.4 in) | 2004 | 40.9 mm (1.6 in) | 40 |
| Wettest five days (Rx5day) | 153.9 mm (6.1 in) | 2024 | 59.1 mm (2.3 in) | 40 |
| Longest dry spell (CDD) | 202 days | 2001 | 108 days | 40 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1948 | 38.9 C (102.0 F) |
| 1949 | 37.2 C (99.0 F) |
| 1950 | 36.7 C (98.1 F) |
| 1951 | 33.3 C (91.9 F) |
| 1952 | 33.9 C (93.0 F) |
| 1953 | 29.4 C (84.9 F) |
| 1963 | 38.3 C (100.9 F) |
| 1964 | 36.7 C (98.1 F) |
| 1965 | 36.7 C (98.1 F) |
| 1966 | 34.4 C (93.9 F) |
| 1967 | 39.4 C (102.9 F) |
| 1968 | 26.7 C (80.1 F) |
| 1976 | 21.7 C (71.1 F) |
| 2000 | 35.0 C (95.0 F) |
| 2001 | 33.9 C (93.0 F) |
| 2002 | 36.1 C (97.0 F) |
| 2003 | 36.1 C (97.0 F) |
| 2004 | 35.0 C (95.0 F) |
| 2005 | 33.9 C (93.0 F) |
| 2006 | 37.8 C (100.0 F) |
| 2007 | 37.2 C (99.0 F) |
| 2008 | 38.3 C (100.9 F) |
| 2009 | 36.7 C (98.1 F) |
| 2010 | 40.0 C (104.0 F) |
| 2011 | 36.1 C (97.0 F) |
| 2012 | 36.7 C (98.1 F) |
| 2013 | 36.1 C (97.0 F) |
| 2014 | 36.7 C (98.1 F) |
| 2015 | 36.1 C (97.0 F) |
| 2016 | 38.9 C (102.0 F) |
| 2017 | 38.9 C (102.0 F) |
| 2018 | 41.1 C (106.0 F) |
| 2019 | 35.0 C (95.0 F) |
| 2020 | 43.3 C (109.9 F) |
| 2021 | 34.4 C (93.9 F) |
| 2022 | 40.6 C (105.1 F) |
| 2023 | 35.0 C (95.0 F) |
| 2024 | 40.6 C (105.1 F) |
| 2025 | 33.9 C (93.0 F) |
| 2026 | 36.1 C (97.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1948 | 2.8 C (37.0 F) |
| 1949 | -1.7 C (28.9 F) |
| 1950 | 2.8 C (37.0 F) |
| 1951 | 2.2 C (36.0 F) |
| 1952 | 3.3 C (37.9 F) |
| 1953 | 2.8 C (37.0 F) |
| 1963 | 2.2 C (36.0 F) |
| 1964 | 3.9 C (39.0 F) |
| 1965 | 3.9 C (39.0 F) |
| 1966 | 4.4 C (39.9 F) |
| 1967 | 1.1 C (34.0 F) |
| 1968 | 3.3 C (37.9 F) |
| 1976 | -3.3 C (26.1 F) |
| 2000 | 2.8 C (37.0 F) |
| 2001 | 3.3 C (37.9 F) |
| 2002 | 3.9 C (39.0 F) |
| 2003 | 5.0 C (41.0 F) |
| 2004 | 4.4 C (39.9 F) |
| 2005 | 5.0 C (41.0 F) |
| 2006 | 2.8 C (37.0 F) |
| 2007 | 3.9 C (39.0 F) |
| 2008 | 4.4 C (39.9 F) |
| 2009 | 4.4 C (39.9 F) |
| 2010 | 3.9 C (39.0 F) |
| 2011 | 2.8 C (37.0 F) |
| 2012 | 5.0 C (41.0 F) |
| 2013 | 3.3 C (37.9 F) |
| 2014 | 3.9 C (39.0 F) |
| 2015 | 5.6 C (42.1 F) |
| 2016 | 5.6 C (42.1 F) |
| 2017 | 6.1 C (43.0 F) |
| 2018 | 4.4 C (39.9 F) |
| 2019 | 3.3 C (37.9 F) |
| 2020 | 6.1 C (43.0 F) |
| 2021 | 3.9 C (39.0 F) |
| 2022 | 3.3 C (37.9 F) |
| 2023 | 3.3 C (37.9 F) |
| 2024 | 6.1 C (43.0 F) |
| 2025 | 4.4 C (39.9 F) |
| 2026 | 6.1 C (43.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1948 | 33.0 mm (1.3 in) |
| 1949 | 43.2 mm (1.7 in) |
| 1950 | 24.1 mm (0.9 in) |
| 1951 | 54.4 mm (2.1 in) |
| 1952 | 50.8 mm (2.0 in) |
| 1953 | 14.2 mm (0.6 in) |
| 1963 | 48.5 mm (1.9 in) |
| 1964 | 17.3 mm (0.7 in) |
| 1965 | 59.9 mm (2.4 in) |
| 1966 | 74.9 mm (2.9 in) |
| 1967 | 66.0 mm (2.6 in) |
| 1968 | 36.6 mm (1.4 in) |
| 1976 | 0.3 mm (0.01 in) |
| 2000 | 15.7 mm (0.6 in) |
| 2001 | 50.8 mm (2.0 in) |
| 2002 | 39.4 mm (1.6 in) |
| 2003 | 76.7 mm (3.0 in) |
| 2004 | 112.8 mm (4.4 in) |
| 2005 | 57.9 mm (2.3 in) |
| 2006 | 29.2 mm (1.1 in) |
| 2007 | 22.6 mm (0.9 in) |
| 2008 | 41.9 mm (1.6 in) |
| 2009 | 39.9 mm (1.6 in) |
| 2010 | 53.1 mm (2.1 in) |
| 2011 | 43.7 mm (1.7 in) |
| 2012 | 24.4 mm (1.0 in) |
| 2013 | 17.0 mm (0.7 in) |
| 2014 | 33.8 mm (1.3 in) |
| 2015 | 20.6 mm (0.8 in) |
| 2016 | 27.4 mm (1.1 in) |
| 2017 | 71.4 mm (2.8 in) |
| 2018 | 66.5 mm (2.6 in) |
| 2019 | 43.2 mm (1.7 in) |
| 2020 | 21.1 mm (0.8 in) |
| 2021 | 33.8 mm (1.3 in) |
| 2022 | 26.7 mm (1.1 in) |
| 2023 | 102.6 mm (4.0 in) |
| 2024 | 57.7 mm (2.3 in) |
| 2025 | 50.3 mm (2.0 in) |
| 2026 | 39.4 mm (1.6 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1948 | 35.1 mm (1.4 in) |
| 1949 | 56.7 mm (2.2 in) |
| 1950 | 40.1 mm (1.6 in) |
| 1951 | 95.0 mm (3.7 in) |
| 1952 | 110.5 mm (4.4 in) |
| 1953 | 18.0 mm (0.7 in) |
| 1963 | 55.8 mm (2.2 in) |
| 1964 | 23.0 mm (0.9 in) |
| 1965 | 137.7 mm (5.4 in) |
| 1966 | 126.8 mm (5.0 in) |
| 1967 | 144.8 mm (5.7 in) |
| 1968 | 36.6 mm (1.4 in) |
| 1976 | 0.3 mm (0.01 in) |
| 2000 | 23.5 mm (0.9 in) |
| 2001 | 71.6 mm (2.8 in) |
| 2002 | 63.3 mm (2.5 in) |
| 2003 | 77.3 mm (3.0 in) |
| 2004 | 139.3 mm (5.5 in) |
| 2005 | 139.0 mm (5.5 in) |
| 2006 | 52.3 mm (2.1 in) |
| 2007 | 27.0 mm (1.1 in) |
| 2008 | 112.2 mm (4.4 in) |
| 2009 | 47.0 mm (1.9 in) |
| 2010 | 151.3 mm (6.0 in) |
| 2011 | 58.2 mm (2.3 in) |
| 2012 | 34.4 mm (1.4 in) |
| 2013 | 30.9 mm (1.2 in) |
| 2014 | 45.6 mm (1.8 in) |
| 2015 | 20.9 mm (0.8 in) |
| 2016 | 59.2 mm (2.3 in) |
| 2017 | 92.4 mm (3.6 in) |
| 2018 | 100.8 mm (4.0 in) |
| 2019 | 94.5 mm (3.7 in) |
| 2020 | 60.1 mm (2.4 in) |
| 2021 | 47.8 mm (1.9 in) |
| 2022 | 43.1 mm (1.7 in) |
| 2023 | 104.4 mm (4.1 in) |
| 2024 | 153.9 mm (6.1 in) |
| 2025 | 89.9 mm (3.5 in) |
| 2026 | 59.0 mm (2.3 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1948 | 137 days |
| 1949 | 150 days |
| 1950 | 85 days |
| 1951 | 128 days |
| 1952 | 194 days |
| 1953 | 39 days |
| 1963 | 84 days |
| 1964 | 106 days |
| 1965 | 82 days |
| 1966 | 181 days |
| 1967 | 175 days |
| 1968 | 18 days |
| 1976 | 6 days |
| 2000 | 107 days |
| 2001 | 202 days |
| 2002 | 99 days |
| 2003 | 93 days |
| 2004 | 46 days |
| 2005 | 159 days |
| 2006 | 77 days |
| 2007 | 108 days |
| 2008 | 160 days |
| 2009 | 135 days |
| 2010 | 57 days |
| 2011 | 134 days |
| 2012 | 61 days |
| 2013 | 154 days |
| 2014 | 92 days |
| 2015 | 64 days |
| 2016 | 80 days |
| 2017 | 177 days |
| 2018 | 134 days |
| 2019 | 67 days |
| 2020 | 172 days |
| 2021 | 140 days |
| 2022 | 92 days |
| 2023 | 85 days |
| 2024 | 180 days |
| 2025 | 170 days |
| 2026 | 181 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.
Rainfall Return Levels
35 years, 1948 to 2025A day with at least 42.6 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 122.2 mm (4.8 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 42.6 mm (1.7 in) | |
| 5 years | 63.1 mm (2.5 in) | |
| 10 years | 77.0 mm (3.0 in) | |
| 25 years | 94.9 mm (3.7 in) | |
| 50 years | 108.5 mm (4.3 in) | Longer than the 35 years of record |
| 100 years | 122.2 mm (4.8 in) | Longer than the 35 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, 35 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: 112.8 mm (4.4 in) in 2004; 102.6 mm (4.0 in) in 2023; 76.7 mm (3.0 in) in 2003.
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 (2026-10-14).