Bellingham Intl AP Weather Records (USW00024217)
Record envelope, standing records and threshold days for Bellingham Intl AP (USW00024217), Washington, United States, with 78 years of record.
Key Facts for Bellingham Intl AP
- Bellingham Intl AP (USW00024217) is a weather station in Washington, United States at 48.80 latitude and -122.54 longitude, 46 m (150 ft) above sea level.
- The station reports from 1949 to 2026, 78 years of record.
- 1,464 records set at Bellingham Intl AP still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Bellingham Intl AP set a daily record precipitation of 39.1 mm (1.5 in) on 29 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Washington, United States, 48.80 latitude, -122.54 longitude.
- Elevation: 46 m (150 ft).
- Period of record: 1949 to 2026, 78 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
4 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) | -18.9 C (-2.0 F) | 15.0 C (59.0 F) | -5.6 C (21.9 F) |
| Feb | 22.2 C (72.0 F) | -18.9 C (-2.0 F) | 15.0 C (59.0 F) | -6.1 C (21.0 F) |
| Mar | 24.4 C (75.9 F) | -12.2 C (10.0 F) | 14.4 C (57.9 F) | -2.2 C (28.0 F) |
| Apr | 28.3 C (82.9 F) | -4.4 C (24.1 F) | 21.7 C (71.1 F) | -0.6 C (30.9 F) |
| May | 32.2 C (90.0 F) | -3.9 C (25.0 F) | 25.0 C (77.0 F) | 6.1 C (43.0 F) |
| Jun | 37.2 C (99.0 F) | 2.8 C (37.0 F) | 28.9 C (84.0 F) | 5.6 C (42.1 F) |
| Jul | 35.6 C (96.1 F) | 4.4 C (39.9 F) | 31.7 C (89.1 F) | 7.8 C (46.0 F) |
| Aug | 37.8 C (100.0 F) | 3.3 C (37.9 F) | 28.3 C (82.9 F) | 7.8 C (46.0 F) |
| Sep | 31.7 C (89.1 F) | -2.2 C (28.0 F) | 22.2 C (72.0 F) | 5.0 C (41.0 F) |
| Oct | 26.7 C (80.1 F) | -6.7 C (19.9 F) | 20.0 C (68.0 F) | -0.6 C (30.9 F) |
| Nov | 22.8 C (73.0 F) | -16.1 C (3.0 F) | n/a | n/a |
| Dec | 19.4 C (66.9 F) | -18.3 C (-0.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1949 | 36 |
| 1950 | 42 |
| 1951 | 32 |
| 1952 | 26 |
| 1953 | 12 |
| 1954 | 38 |
| 1955 | 52 |
| 1956 | 27 |
| 1957 | 15 |
| 1958 | 36 |
| 1959 | 14 |
| 1960 | 12 |
| 1961 | 15 |
| 1962 | 16 |
| 1963 | 26 |
| 1964 | 22 |
| 1965 | 20 |
| 1966 | 21 |
| 1967 | 12 |
| 1968 | 25 |
| 1969 | 31 |
| 1970 | 8 |
| 1971 | 26 |
| 1972 | 34 |
| 1973 | 9 |
| 1974 | 15 |
| 1975 | 17 |
| 1976 | 14 |
| 1977 | 15 |
| 1978 | 13 |
| 1979 | 19 |
| 1980 | 19 |
| 1981 | 20 |
| 1982 | 22 |
| 1983 | 15 |
| 1984 | 17 |
| 1985 | 24 |
| 1986 | 28 |
| 1987 | 13 |
| 1988 | 14 |
| 1989 | 19 |
| 1990 | 23 |
| 1991 | 10 |
| 1992 | 21 |
| 1993 | 12 |
| 1994 | 13 |
| 1995 | 17 |
| 1996 | 16 |
| 1998 | 2 |
| 1999 | 8 |
| 2000 | 8 |
| 2001 | 8 |
| 2002 | 28 |
| 2003 | 16 |
| 2004 | 11 |
| 2005 | 17 |
| 2006 | 11 |
| 2007 | 10 |
| 2008 | 22 |
| 2009 | 14 |
| 2010 | 20 |
| 2011 | 14 |
| 2012 | 17 |
| 2013 | 9 |
| 2014 | 23 |
| 2015 | 26 |
| 2016 | 25 |
| 2017 | 11 |
| 2018 | 18 |
| 2019 | 21 |
| 2020 | 16 |
| 2021 | 35 |
| 2022 | 17 |
| 2023 | 20 |
| 2024 | 15 |
| 2025 | 9 |
| 2026 | 10 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1981-08-11 | Record high minimum temperature | Record high minimum temperature 17.8 C (64.0 F) |
| 2009-07-29 | Record high maximum temperature | Record high maximum temperature 35.6 C (96.1 F) |
| 2014-08-12 | Record high minimum temperature | Record high minimum temperature 18.3 C (64.9 F) |
| 2021-06-27 | Record high minimum temperature | Record high minimum temperature 18.9 C (66.0 F) |
| 2021-06-28 | Record high maximum temperature | Record high maximum temperature 37.2 C (99.0 F) |
| 2021-08-12 | Record high maximum temperature | Record high maximum temperature 37.8 C (100.0 F) |
Wettest Day of Each Month
Jan: 83.8 mm (3.3 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 83.8 mm (3.3 in) | 12 January 1976 |
| Feb | 81.5 mm (3.2 in) | 16 February 1949 |
| Mar | 61.0 mm (2.4 in) | 13 March 1982 |
| Apr | 40.4 mm (1.6 in) | 17 April 1992 |
| May | 38.6 mm (1.5 in) | 16 May 1988 |
| Jun | 45.2 mm (1.8 in) | 3 June 1990 |
| Jul | 40.4 mm (1.6 in) | 5 July 1992 |
| Aug | 51.1 mm (2.0 in) | 12 August 1965 |
| Sep | 69.9 mm (2.8 in) | 1 September 1983 |
| Oct | 62.5 mm (2.5 in) | 16 October 2003 |
| Nov | 72.9 mm (2.9 in) | 9 November 1990 |
| Dec | 66.0 mm (2.6 in) | 30 December 1979 |
Period of Record Coverage
1949 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1949 | 359 | 98% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 362 | 99% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 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 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 364 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 364 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 182 | 50% | No |
| 1998 | 110 | 30% | No |
| 1999 | 365 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 364 | 100% | Yes |
| 2002 | 364 | 100% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 363 | 99% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 361 | 99% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 363 | 99% | Yes |
| 2012 | 365 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 364 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 285 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 29 September 2026 | Bellingham Intl AP, US | daily rain (Provisional) | 39.1 mm (1.5 in) | 14.2 mm (0.6 in) | 20 years | 34 of 100 (Routine) |
| 25 September 2026 | Bellingham Intl AP, US | daily rain (Provisional) | 30.0 mm (1.2 in) | 4.6 mm (0.18 in) | 1 year | 14 of 100 (Routine) |
| 22 July 2026 | Bellingham Intl AP, US | daily high max | 31.7 C (89.1 F) | 1.1 C (2.0 F) | 48 years | 24 of 100 (Routine) |
| 2 July 2026 | Bellingham Intl AP, US | daily rain | 19.0 mm (0.7 in) | 1.0 mm (0.04 in) | 60 years | 20 of 100 (Routine) |
| 23 June 2026 | Bellingham Intl AP, US | daily high max | 28.3 C (82.9 F) | 0.5 C (0.9 F) | 33 years | 18 of 100 (Routine) |
| 14 June 2026 | Bellingham Intl AP, US | daily high max | 28.9 C (84.0 F) | 0.6 C (1.1 F) | 37 years | 19 of 100 (Routine) |
| 7 May 2026 | Bellingham Intl AP, US | daily high min (Tie) | 11.1 C (52.0 F) | tie | 8 years | 2 of 100 (Routine) |
| 5 May 2026 | Bellingham Intl AP, US | daily high min | 11.7 C (53.1 F) | 1.1 C (2.0 F) | 45 years | 24 of 100 (Routine) |
| 3 May 2026 | Bellingham Intl AP, US | daily high max | 24.4 C (75.9 F) | 1.1 C (2.0 F) | 33 years | 19 of 100 (Routine) |
| 19 March 2026 | Bellingham Intl AP, US | daily high min | 10.0 C (50.0 F) | 1.7 C (3.1 F) | 19 years | 17 of 100 (Routine) |
| 18 March 2026 | Bellingham Intl AP, US | daily rain | 21.3 mm (0.8 in) | 8.3 mm (0.33 in) | 52 years | 20 of 100 (Routine) |
| 18 March 2026 | Bellingham Intl AP, US | daily high min | 10.6 C (51.1 F) | 1.7 C (3.1 F) | 19 years | 17 of 100 (Routine) |
| 17 March 2026 | Bellingham Intl AP, US | daily high min | 10.0 C (50.0 F) | 2.8 C (5.0 F) | 56 years | 32 of 100 (Routine) |
| 16 March 2026 | Bellingham Intl AP, US | daily rain | 25.1 mm (1.0 in) | 7.6 mm (0.30 in) | 76 years | 42 of 100 (Notable) |
| 7 March 2026 | Bellingham Intl AP, US | daily high min | 8.9 C (48.0 F) | 0.6 C (1.1 F) | 40 years | 20 of 100 (Routine) |
| 29 January 2026 | Bellingham Intl AP, US | daily high min | 10.6 C (51.1 F) | 1.7 C (3.1 F) | 34 years | 20 of 100 (Routine) |
| 13 January 2026 | Bellingham Intl AP, US | daily high min (Tie) | 9.4 C (48.9 F) | tie | 12 years | 2 of 100 (Routine) |
| 16 December 2025 | Bellingham Intl AP, US | daily rain | 31.5 mm (1.2 in) | 10.7 mm (0.4 in) | 23 years | 27 of 100 (Routine) |
| 14 December 2025 | Bellingham Intl AP, US | daily high min (Tie) | 8.3 C (46.9 F) | tie | 39 years | 4 of 100 (Routine) |
| 10 December 2025 | Bellingham Intl AP, US | daily rain | 57.9 mm (2.3 in) | 34.3 mm (1.4 in) | 11 years | 50 of 100 (Notable) |
Climate Trend
74 complete years, 1949 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1949 | 8.9 C | -1.09 C |
| 1950 | 8.8 C | -1.23 C |
| 1951 | 9.2 C | -0.80 C |
| 1952 | 9.4 C | -0.61 C |
| 1953 | 10.3 C | +0.29 C |
| 1954 | 9.0 C | -0.98 C |
| 1955 | 8.1 C | -1.95 C |
| 1956 | 9.2 C | -0.79 C |
| 1957 | 9.4 C | -0.60 C |
| 1958 | 11.3 C | +1.26 C |
| 1959 | 9.6 C | -0.46 C |
| 1960 | 9.7 C | -0.30 C |
| 1961 | 10.4 C | +0.42 C |
| 1962 | 9.9 C | -0.15 C |
| 1963 | 10.1 C | +0.06 C |
| 1964 | 9.1 C | -0.94 C |
| 1965 | 9.7 C | -0.28 C |
| 1966 | 9.5 C | -0.57 C |
| 1967 | 10.4 C | +0.34 C |
| 1968 | 10.1 C | +0.06 C |
| 1969 | 9.3 C | -0.71 C |
| 1970 | 9.8 C | -0.27 C |
| 1971 | 8.8 C | -1.19 C |
| 1972 | 8.9 C | -1.08 C |
| 1973 | 9.7 C | -0.31 C |
| 1974 | 10.3 C | +0.28 C |
| 1975 | 9.2 C | -0.85 C |
| 1976 | 9.9 C | -0.10 C |
| 1977 | 10.4 C | +0.40 C |
| 1978 | 10.2 C | +0.13 C |
| 1979 | 9.8 C | -0.20 C |
| 1980 | 9.7 C | -0.30 C |
| 1981 | 10.3 C | +0.23 C |
| 1982 | 9.3 C | -0.70 C |
| 1983 | 10.0 C | +0.02 C |
| 1984 | 9.3 C | -0.74 C |
| 1985 | 9.1 C | -0.95 C |
| 1986 | 10.5 C | +0.46 C |
| 1987 | 10.9 C | +0.88 C |
| 1988 | 10.4 C | +0.33 C |
| 1989 | 10.1 C | +0.12 C |
| 1990 | 10.4 C | +0.42 C |
| 1991 | 10.4 C | +0.33 C |
| 1992 | 11.1 C | +1.11 C |
| 1993 | 10.0 C | +0.01 C |
| 1994 | 10.8 C | +0.82 C |
| 1995 | 11.1 C | +1.09 C |
| 1999 | 9.7 C | -0.30 C |
| 2000 | 9.3 C | -0.68 C |
| 2001 | 9.5 C | -0.53 C |
| 2002 | 9.5 C | -0.51 C |
| 2003 | 10.3 C | +0.32 C |
| 2004 | 10.6 C | +0.55 C |
| 2005 | 10.1 C | +0.08 C |
| 2006 | 10.2 C | +0.14 C |
| 2007 | 9.7 C | -0.37 C |
| 2008 | 9.0 C | -1.07 C |
| 2009 | 9.7 C | -0.30 C |
| 2010 | 10.8 C | +0.74 C |
| 2011 | 9.9 C | -0.10 C |
| 2012 | 10.3 C | +0.24 C |
| 2013 | 10.5 C | +0.43 C |
| 2014 | 11.3 C | +1.28 C |
| 2015 | 11.7 C | +1.68 C |
| 2016 | 11.5 C | +1.50 C |
| 2017 | 10.4 C | +0.35 C |
| 2018 | 11.0 C | +0.97 C |
| 2019 | 10.7 C | +0.65 C |
| 2020 | 10.8 C | +0.82 C |
| 2021 | 10.9 C | +0.86 C |
| 2022 | 10.4 C | +0.36 C |
| 2023 | 10.8 C | +0.82 C |
| 2024 | 10.4 C | +0.35 C |
| 2025 | 10.6 C | +0.56 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1949 to 2025. In Fahrenheit: 0.3 F (0.2 to 0.4) per decade. The slope is a straight line fitted to 74 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 | 1949 to 2025 | 74 | Rise |
| Mean daily maximum | 0.1 C (0.1 to 0.2) per decade | 0.2 F (0.1 to 0.4) per decade | 1949 to 2025 | 74 | Rise |
| Mean daily minimum | 0.2 C (0.2 to 0.3) per decade | 0.4 F (0.3 to 0.5) per decade | 1949 to 2025 | 74 | 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
1949 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 37.8 C (100.0 F) | 2021 | 31.1 C (88.0 F) | 77 |
| Coldest night (TNn) | -18.9 C (-2.0 F) | 1950 | -10.6 C (12.9 F) | 77 |
| Wettest day (Rx1day) | 83.8 mm (3.3 in) | 1976 | 40.9 mm (1.6 in) | 77 |
| Wettest five days (Rx5day) | 158.0 mm (6.2 in) | 2021 | 77.5 mm (3.1 in) | 77 |
| Longest dry spell (CDD) | 81 days | 1951 | 28 days | 77 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1949 | 30.6 C (87.1 F) |
| 1950 | 28.9 C (84.0 F) |
| 1951 | 33.3 C (91.9 F) |
| 1952 | 30.0 C (86.0 F) |
| 1953 | 31.1 C (88.0 F) |
| 1954 | 26.7 C (80.1 F) |
| 1955 | 33.9 C (93.0 F) |
| 1956 | 31.7 C (89.1 F) |
| 1957 | 28.3 C (82.9 F) |
| 1958 | 32.2 C (90.0 F) |
| 1959 | 30.6 C (87.1 F) |
| 1960 | 34.4 C (93.9 F) |
| 1961 | 32.8 C (91.0 F) |
| 1962 | 28.3 C (82.9 F) |
| 1963 | 31.1 C (88.0 F) |
| 1964 | 27.2 C (81.0 F) |
| 1965 | 33.9 C (93.0 F) |
| 1966 | 28.9 C (84.0 F) |
| 1967 | 31.7 C (89.1 F) |
| 1968 | 31.7 C (89.1 F) |
| 1969 | 31.1 C (88.0 F) |
| 1970 | 31.7 C (89.1 F) |
| 1971 | 31.1 C (88.0 F) |
| 1972 | 28.3 C (82.9 F) |
| 1973 | 30.0 C (86.0 F) |
| 1974 | 31.7 C (89.1 F) |
| 1975 | 28.3 C (82.9 F) |
| 1976 | 27.8 C (82.0 F) |
| 1977 | 33.9 C (93.0 F) |
| 1978 | 34.4 C (93.9 F) |
| 1979 | 31.1 C (88.0 F) |
| 1980 | 27.8 C (82.0 F) |
| 1981 | 30.6 C (87.1 F) |
| 1982 | 30.6 C (87.1 F) |
| 1983 | 32.2 C (90.0 F) |
| 1984 | 28.9 C (84.0 F) |
| 1985 | 31.7 C (89.1 F) |
| 1986 | 28.9 C (84.0 F) |
| 1987 | 30.0 C (86.0 F) |
| 1988 | 33.3 C (91.9 F) |
| 1989 | 30.6 C (87.1 F) |
| 1990 | 33.9 C (93.0 F) |
| 1991 | 31.7 C (89.1 F) |
| 1992 | 29.4 C (84.9 F) |
| 1993 | 32.2 C (90.0 F) |
| 1994 | 32.2 C (90.0 F) |
| 1995 | 31.7 C (89.1 F) |
| 1996 | 24.4 C (75.9 F) |
| 1998 | 23.3 C (73.9 F) |
| 1999 | 28.9 C (84.0 F) |
| 2000 | 27.8 C (82.0 F) |
| 2001 | 27.8 C (82.0 F) |
| 2002 | 28.9 C (84.0 F) |
| 2003 | 30.6 C (87.1 F) |
| 2004 | 31.7 C (89.1 F) |
| 2005 | 29.4 C (84.9 F) |
| 2006 | 31.1 C (88.0 F) |
| 2007 | 34.4 C (93.9 F) |
| 2008 | 29.4 C (84.9 F) |
| 2009 | 35.6 C (96.1 F) |
| 2010 | 32.2 C (90.0 F) |
| 2011 | 28.3 C (82.9 F) |
| 2012 | 31.7 C (89.1 F) |
| 2013 | 31.1 C (88.0 F) |
| 2014 | 30.0 C (86.0 F) |
| 2015 | 33.9 C (93.0 F) |
| 2016 | 31.7 C (89.1 F) |
| 2017 | 30.6 C (87.1 F) |
| 2018 | 32.2 C (90.0 F) |
| 2019 | 29.4 C (84.9 F) |
| 2020 | 32.2 C (90.0 F) |
| 2021 | 37.8 C (100.0 F) |
| 2022 | 32.8 C (91.0 F) |
| 2023 | 30.6 C (87.1 F) |
| 2024 | 31.1 C (88.0 F) |
| 2025 | 31.7 C (89.1 F) |
| 2026 | 31.7 C (89.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1949 | -13.9 C (7.0 F) |
| 1950 | -18.9 C (-2.0 F) |
| 1951 | -12.8 C (9.0 F) |
| 1952 | -11.1 C (12.0 F) |
| 1953 | -5.0 C (23.0 F) |
| 1954 | -12.2 C (10.0 F) |
| 1955 | -16.1 C (3.0 F) |
| 1956 | -14.4 C (6.1 F) |
| 1957 | -13.3 C (8.1 F) |
| 1958 | -6.7 C (19.9 F) |
| 1959 | -12.8 C (9.0 F) |
| 1960 | -7.8 C (18.0 F) |
| 1961 | -6.7 C (19.9 F) |
| 1962 | -10.6 C (12.9 F) |
| 1963 | -12.8 C (9.0 F) |
| 1964 | -18.3 C (-0.9 F) |
| 1965 | -8.3 C (17.1 F) |
| 1966 | -10.0 C (14.0 F) |
| 1967 | -7.8 C (18.0 F) |
| 1968 | -17.8 C (0.0 F) |
| 1969 | -12.8 C (9.0 F) |
| 1970 | -9.4 C (15.1 F) |
| 1971 | -12.2 C (10.0 F) |
| 1972 | -13.9 C (7.0 F) |
| 1973 | -11.1 C (12.0 F) |
| 1974 | -10.0 C (14.0 F) |
| 1975 | -8.3 C (17.1 F) |
| 1976 | -7.8 C (18.0 F) |
| 1977 | -7.2 C (19.0 F) |
| 1978 | -12.8 C (9.0 F) |
| 1979 | -12.8 C (9.0 F) |
| 1980 | -13.3 C (8.1 F) |
| 1981 | -8.3 C (17.1 F) |
| 1982 | -17.2 C (1.0 F) |
| 1983 | -11.1 C (12.0 F) |
| 1984 | -11.1 C (12.0 F) |
| 1985 | -15.6 C (3.9 F) |
| 1986 | -13.3 C (8.1 F) |
| 1987 | -6.1 C (21.0 F) |
| 1988 | -8.3 C (17.1 F) |
| 1989 | -15.0 C (5.0 F) |
| 1990 | -14.4 C (6.1 F) |
| 1991 | -7.8 C (18.0 F) |
| 1992 | -7.2 C (19.0 F) |
| 1993 | -11.1 C (12.0 F) |
| 1994 | -8.3 C (17.1 F) |
| 1995 | -7.2 C (19.0 F) |
| 1996 | -12.2 C (10.0 F) |
| 1998 | -12.2 C (10.0 F) |
| 1999 | -3.9 C (25.0 F) |
| 2000 | -7.2 C (19.0 F) |
| 2001 | -5.6 C (21.9 F) |
| 2002 | -8.3 C (17.1 F) |
| 2003 | -7.8 C (18.0 F) |
| 2004 | -10.6 C (12.9 F) |
| 2005 | -10.6 C (12.9 F) |
| 2006 | -11.0 C (12.2 F) |
| 2007 | -12.1 C (10.2 F) |
| 2008 | -11.6 C (11.1 F) |
| 2009 | -9.9 C (14.2 F) |
| 2010 | -11.0 C (12.2 F) |
| 2011 | -8.8 C (16.2 F) |
| 2012 | -12.1 C (10.2 F) |
| 2013 | -11.0 C (12.2 F) |
| 2014 | -7.7 C (18.1 F) |
| 2015 | -6.6 C (20.1 F) |
| 2016 | -9.9 C (14.2 F) |
| 2017 | -9.3 C (15.3 F) |
| 2018 | -7.1 C (19.2 F) |
| 2019 | -9.3 C (15.3 F) |
| 2020 | -9.3 C (15.3 F) |
| 2021 | -14.3 C (6.3 F) |
| 2022 | -13.2 C (8.2 F) |
| 2023 | -7.1 C (19.2 F) |
| 2024 | -16.0 C (3.2 F) |
| 2025 | -9.9 C (14.2 F) |
| 2026 | -6.1 C (21.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1949 | 81.5 mm (3.2 in) |
| 1950 | 33.3 mm (1.3 in) |
| 1951 | 44.7 mm (1.8 in) |
| 1952 | 21.6 mm (0.9 in) |
| 1953 | 39.4 mm (1.6 in) |
| 1954 | 62.2 mm (2.4 in) |
| 1955 | 60.7 mm (2.4 in) |
| 1956 | 28.7 mm (1.1 in) |
| 1957 | 25.4 mm (1.0 in) |
| 1958 | 42.9 mm (1.7 in) |
| 1959 | 44.7 mm (1.8 in) |
| 1960 | 33.3 mm (1.3 in) |
| 1961 | 34.3 mm (1.4 in) |
| 1962 | 40.9 mm (1.6 in) |
| 1963 | 37.6 mm (1.5 in) |
| 1964 | 20.6 mm (0.8 in) |
| 1965 | 51.1 mm (2.0 in) |
| 1966 | 49.0 mm (1.9 in) |
| 1967 | 48.0 mm (1.9 in) |
| 1968 | 33.8 mm (1.3 in) |
| 1969 | 42.7 mm (1.7 in) |
| 1970 | 23.6 mm (0.9 in) |
| 1971 | 49.5 mm (1.9 in) |
| 1972 | 47.0 mm (1.9 in) |
| 1973 | 31.0 mm (1.2 in) |
| 1974 | 34.8 mm (1.4 in) |
| 1975 | 45.7 mm (1.8 in) |
| 1976 | 83.8 mm (3.3 in) |
| 1977 | 34.5 mm (1.4 in) |
| 1978 | 45.2 mm (1.8 in) |
| 1979 | 66.0 mm (2.6 in) |
| 1980 | 69.3 mm (2.7 in) |
| 1981 | 34.0 mm (1.3 in) |
| 1982 | 62.5 mm (2.5 in) |
| 1983 | 69.9 mm (2.8 in) |
| 1984 | 62.5 mm (2.5 in) |
| 1985 | 44.5 mm (1.8 in) |
| 1986 | 44.2 mm (1.7 in) |
| 1987 | 32.3 mm (1.3 in) |
| 1988 | 38.6 mm (1.5 in) |
| 1989 | 71.9 mm (2.8 in) |
| 1990 | 72.9 mm (2.9 in) |
| 1991 | 26.7 mm (1.1 in) |
| 1992 | 40.4 mm (1.6 in) |
| 1993 | 33.3 mm (1.3 in) |
| 1994 | 32.3 mm (1.3 in) |
| 1995 | 46.2 mm (1.8 in) |
| 1996 | 30.7 mm (1.2 in) |
| 1998 | 27.7 mm (1.1 in) |
| 1999 | 32.0 mm (1.3 in) |
| 2000 | 23.1 mm (0.9 in) |
| 2001 | 39.4 mm (1.6 in) |
| 2002 | 41.9 mm (1.6 in) |
| 2003 | 62.5 mm (2.5 in) |
| 2004 | 67.1 mm (2.6 in) |
| 2005 | 36.8 mm (1.4 in) |
| 2006 | 45.2 mm (1.8 in) |
| 2007 | 37.1 mm (1.5 in) |
| 2008 | 31.2 mm (1.2 in) |
| 2009 | 38.6 mm (1.5 in) |
| 2010 | 40.9 mm (1.6 in) |
| 2011 | 33.3 mm (1.3 in) |
| 2012 | 26.2 mm (1.0 in) |
| 2013 | 29.5 mm (1.2 in) |
| 2014 | 29.2 mm (1.1 in) |
| 2015 | 31.8 mm (1.3 in) |
| 2016 | 52.1 mm (2.1 in) |
| 2017 | 56.4 mm (2.2 in) |
| 2018 | 30.7 mm (1.2 in) |
| 2019 | 47.5 mm (1.9 in) |
| 2020 | 46.2 mm (1.8 in) |
| 2021 | 70.6 mm (2.8 in) |
| 2022 | 48.5 mm (1.9 in) |
| 2023 | 40.1 mm (1.6 in) |
| 2024 | 53.8 mm (2.1 in) |
| 2025 | 57.9 mm (2.3 in) |
| 2026 | 39.1 mm (1.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1949 | 99.3 mm (3.9 in) |
| 1950 | 65.8 mm (2.6 in) |
| 1951 | 113.8 mm (4.5 in) |
| 1952 | 36.5 mm (1.4 in) |
| 1953 | 57.2 mm (2.3 in) |
| 1954 | 99.5 mm (3.9 in) |
| 1955 | 69.6 mm (2.7 in) |
| 1956 | 64.8 mm (2.6 in) |
| 1957 | 49.2 mm (1.9 in) |
| 1958 | 107.9 mm (4.2 in) |
| 1959 | 83.2 mm (3.3 in) |
| 1960 | 71.3 mm (2.8 in) |
| 1961 | 77.5 mm (3.1 in) |
| 1962 | 63.7 mm (2.5 in) |
| 1963 | 67.0 mm (2.6 in) |
| 1964 | 55.4 mm (2.2 in) |
| 1965 | 79.9 mm (3.1 in) |
| 1966 | 81.5 mm (3.2 in) |
| 1967 | 107.8 mm (4.2 in) |
| 1968 | 56.0 mm (2.2 in) |
| 1969 | 68.6 mm (2.7 in) |
| 1970 | 44.7 mm (1.8 in) |
| 1971 | 90.6 mm (3.6 in) |
| 1972 | 104.7 mm (4.1 in) |
| 1973 | 56.9 mm (2.2 in) |
| 1974 | 94.2 mm (3.7 in) |
| 1975 | 108.2 mm (4.3 in) |
| 1976 | 138.7 mm (5.5 in) |
| 1977 | 54.9 mm (2.2 in) |
| 1978 | 67.4 mm (2.7 in) |
| 1979 | 88.1 mm (3.5 in) |
| 1980 | 92.5 mm (3.6 in) |
| 1981 | 75.7 mm (3.0 in) |
| 1982 | 127.0 mm (5.0 in) |
| 1983 | 79.8 mm (3.1 in) |
| 1984 | 115.0 mm (4.5 in) |
| 1985 | 95.2 mm (3.7 in) |
| 1986 | 84.0 mm (3.3 in) |
| 1987 | 62.6 mm (2.5 in) |
| 1988 | 90.9 mm (3.6 in) |
| 1989 | 122.7 mm (4.8 in) |
| 1990 | 131.1 mm (5.2 in) |
| 1991 | 81.3 mm (3.2 in) |
| 1992 | 65.6 mm (2.6 in) |
| 1993 | 54.1 mm (2.1 in) |
| 1994 | 66.9 mm (2.6 in) |
| 1995 | 83.4 mm (3.3 in) |
| 1996 | 63.7 mm (2.5 in) |
| 1998 | 82.6 mm (3.3 in) |
| 1999 | 62.0 mm (2.4 in) |
| 2000 | 45.5 mm (1.8 in) |
| 2001 | 70.6 mm (2.8 in) |
| 2002 | 76.0 mm (3.0 in) |
| 2003 | 128.6 mm (5.1 in) |
| 2004 | 86.9 mm (3.4 in) |
| 2005 | 101.9 mm (4.0 in) |
| 2006 | 101.1 mm (4.0 in) |
| 2007 | 59.2 mm (2.3 in) |
| 2008 | 78.5 mm (3.1 in) |
| 2009 | 110.4 mm (4.3 in) |
| 2010 | 98.9 mm (3.9 in) |
| 2011 | 56.1 mm (2.2 in) |
| 2012 | 69.9 mm (2.8 in) |
| 2013 | 59.4 mm (2.3 in) |
| 2014 | 58.1 mm (2.3 in) |
| 2015 | 67.8 mm (2.7 in) |
| 2016 | 87.7 mm (3.5 in) |
| 2017 | 106.6 mm (4.2 in) |
| 2018 | 61.9 mm (2.4 in) |
| 2019 | 75.8 mm (3.0 in) |
| 2020 | 68.4 mm (2.7 in) |
| 2021 | 158.0 mm (6.2 in) |
| 2022 | 69.4 mm (2.7 in) |
| 2023 | 63.8 mm (2.5 in) |
| 2024 | 68.0 mm (2.7 in) |
| 2025 | 89.9 mm (3.5 in) |
| 2026 | 86.8 mm (3.4 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1949 | 28 days |
| 1950 | 31 days |
| 1951 | 81 days |
| 1952 | 29 days |
| 1953 | 19 days |
| 1954 | 23 days |
| 1955 | 24 days |
| 1956 | 26 days |
| 1957 | 19 days |
| 1958 | 37 days |
| 1959 | 28 days |
| 1960 | 55 days |
| 1961 | 24 days |
| 1962 | 27 days |
| 1963 | 31 days |
| 1964 | 10 days |
| 1965 | 38 days |
| 1966 | 18 days |
| 1967 | 22 days |
| 1968 | 24 days |
| 1969 | 31 days |
| 1970 | 28 days |
| 1971 | 40 days |
| 1972 | 33 days |
| 1973 | 31 days |
| 1974 | 53 days |
| 1975 | 16 days |
| 1976 | 21 days |
| 1977 | 29 days |
| 1978 | 42 days |
| 1979 | 35 days |
| 1980 | 28 days |
| 1981 | 21 days |
| 1982 | 29 days |
| 1983 | 24 days |
| 1984 | 20 days |
| 1985 | 37 days |
| 1986 | 52 days |
| 1987 | 38 days |
| 1988 | 32 days |
| 1989 | 29 days |
| 1990 | 42 days |
| 1991 | 45 days |
| 1992 | 16 days |
| 1993 | 26 days |
| 1994 | 35 days |
| 1995 | 29 days |
| 1996 | 11 days |
| 1998 | 6 days |
| 1999 | 32 days |
| 2000 | 20 days |
| 2001 | 28 days |
| 2002 | 28 days |
| 2003 | 29 days |
| 2004 | 30 days |
| 2005 | 18 days |
| 2006 | 29 days |
| 2007 | 28 days |
| 2008 | 25 days |
| 2009 | 22 days |
| 2010 | 45 days |
| 2011 | 26 days |
| 2012 | 80 days |
| 2013 | 19 days |
| 2014 | 20 days |
| 2015 | 22 days |
| 2016 | 37 days |
| 2017 | 25 days |
| 2018 | 34 days |
| 2019 | 21 days |
| 2020 | 27 days |
| 2021 | 53 days |
| 2022 | 77 days |
| 2023 | 34 days |
| 2024 | 28 days |
| 2025 | 29 days |
| 2026 | 28 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
74 years with a frostAcross 74 years with a frost, the median last spring frost at Bellingham Intl AP falls on 15 April and the median first autumn frost on 25 October, which leaves a median of 194 days between them.
In 1993 to 2025 the median growing season was 197 days. That is 16 days more than in 1949 to 1978.
Fitted over all years, the growing season changes by +4.9 days per decade at this station.
| Measure | Median, all years | Earliest period (1949 to 1978) | Recent period (1993 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 15 April | 23 April | 13 April | 10 days earlier | -3.1 days per decade |
| First autumn frost | 25 October | 18 October | 28 October | 10 days later | +1.8 days per decade |
| Growing days | 194 days | 181 days | 197 days | 16 days more | +4.9 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
73 years, 1949 to 2025A day with at least 41.4 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 92.9 mm (3.7 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 41.4 mm (1.6 in) | |
| 5 years | 54.8 mm (2.2 in) | |
| 10 years | 63.8 mm (2.5 in) | |
| 25 years | 75.4 mm (3.0 in) | |
| 50 years | 84.1 mm (3.3 in) | |
| 100 years | 92.9 mm (3.7 in) | Longer than the 73 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, 73 years of values from 1949 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: 83.8 mm (3.3 in) in 1976; 81.5 mm (3.2 in) in 1949; 72.9 mm (2.9 in) in 1990.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Bellingham Intl AP had a mean temperature of 10.7 C (51.3 F) and 866.5 mm (34.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are La Grande (United States, 219 km away), Seattle Tacoma AP (United States, 152 km away) and Alencon-Valframbert (France, 7,883 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| La Grande | United States | 219 km (136 mi) | 10.7 C (51.3 F) | 957.5 mm (37.7 in) | 0.64 |
| Seattle Tacoma AP | United States | 152 km (94 mi) | 11.1 C (52.0 F) | 945.3 mm (37.2 in) | 0.68 |
| Alencon-Valframbert | France | 7,883 km (4,898 mi) | 10.4 C (50.8 F) | 735.7 mm (29.0 in) | 0.74 |
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).