Drummond Aviation Weather Records (USW00024139)
Record envelope, standing records and threshold days for Drummond Aviation (USW00024139), Montana, United States, with 100 years of record.
Key Facts for Drummond Aviation
- Drummond Aviation (USW00024139) is a weather station in Montana, United States at 46.64 latitude and -113.18 longitude, 1,219 m (4,000 ft) above sea level.
- The station reports from 1927 to 2026, 100 years of record.
- 1,464 records set at Drummond Aviation still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Drummond Aviation tied a daily record snow depth of 10.2 cm (4.0 in) 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: Montana, United States, 46.64 latitude, -113.18 longitude.
- Elevation: 1,219 m (4,000 ft).
- Period of record: 1927 to 2026, 100 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
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 | 13.9 C (57.0 F) | -44.4 C (-47.9 F) | 12.2 C (54.0 F) | -17.8 C (0.0 F) |
| Feb | 19.4 C (66.9 F) | -42.8 C (-45.0 F) | 13.9 C (57.0 F) | -16.1 C (3.0 F) |
| Mar | 25.6 C (78.1 F) | -30.6 C (-23.1 F) | 23.3 C (73.9 F) | -18.9 C (-2.0 F) |
| Apr | 29.4 C (84.9 F) | -18.9 C (-2.0 F) | 27.8 C (82.0 F) | -8.9 C (16.0 F) |
| May | 33.9 C (93.0 F) | -12.8 C (9.0 F) | 31.1 C (88.0 F) | -6.7 C (19.9 F) |
| Jun | 36.1 C (97.0 F) | -6.7 C (19.9 F) | 28.3 C (82.9 F) | -3.9 C (25.0 F) |
| Jul | 40.0 C (104.0 F) | -2.8 C (27.0 F) | 36.7 C (98.1 F) | 4.4 C (39.9 F) |
| Aug | 38.3 C (100.9 F) | -5.6 C (21.9 F) | 35.6 C (96.1 F) | 1.1 C (34.0 F) |
| Sep | 35.6 C (96.1 F) | -10.6 C (12.9 F) | 27.8 C (82.0 F) | -4.4 C (24.1 F) |
| Oct | 29.4 C (84.9 F) | -21.7 C (-7.1 F) | 25.0 C (77.0 F) | -6.7 C (19.9 F) |
| Nov | 22.8 C (73.0 F) | -40.0 C (-40.0 F) | n/a | n/a |
| Dec | 16.1 C (61.0 F) | -41.7 C (-43.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1927 | 6 |
| 1928 | 1 |
| 1949 | 25 |
| 1950 | 32 |
| 1951 | 32 |
| 1952 | 26 |
| 1953 | 25 |
| 1954 | 27 |
| 1955 | 31 |
| 1956 | 22 |
| 1957 | 26 |
| 1958 | 19 |
| 1959 | 22 |
| 1960 | 20 |
| 1961 | 20 |
| 1962 | 42 |
| 1963 | 29 |
| 1964 | 19 |
| 1965 | 27 |
| 1966 | 22 |
| 1967 | 12 |
| 1968 | 11 |
| 1969 | 24 |
| 1970 | 26 |
| 1971 | 29 |
| 1972 | 37 |
| 1973 | 19 |
| 1974 | 13 |
| 1975 | 22 |
| 1976 | 17 |
| 1977 | 18 |
| 1978 | 21 |
| 1979 | 22 |
| 1980 | 26 |
| 1981 | 17 |
| 1982 | 19 |
| 1983 | 36 |
| 1984 | 21 |
| 1985 | 34 |
| 1986 | 25 |
| 1987 | 26 |
| 1988 | 20 |
| 1989 | 29 |
| 1990 | 28 |
| 1991 | 4 |
| 1992 | 22 |
| 1993 | 23 |
| 1994 | 18 |
| 1995 | 16 |
| 1996 | 16 |
| 1997 | 11 |
| 1998 | 10 |
| 1999 | 29 |
| 2000 | 18 |
| 2001 | 13 |
| 2002 | 25 |
| 2003 | 35 |
| 2004 | 17 |
| 2005 | 26 |
| 2006 | 20 |
| 2007 | 19 |
| 2008 | 20 |
| 2009 | 17 |
| 2010 | 8 |
| 2011 | 10 |
| 2012 | 12 |
| 2024 | 5 |
| 2025 | 27 |
| 2026 | 18 |
All-Time Record Progression
11 new records| Date | Kind | Detail |
|---|---|---|
| 1980-05-23 | Record daily precipitation | Record daily precipitation 35.8 mm (1.4 in) |
| 1983-07-10 | Record daily precipitation | Record daily precipitation 36.3 mm (1.4 in) |
| 1983-08-08 | Record high minimum temperature | Record high minimum temperature 19.4 C (66.9 F) |
| 1989-02-02 | Record low maximum temperature | Record low maximum temperature -28.3 C (-18.9 F) |
| 1996-12-25 | Record snow depth | Record snow depth 53.3 cm (21.0 in) |
| 1996-12-26 | Record snow depth | Record snow depth 61.0 cm (24.0 in) |
| 1996-12-27 | Record snow depth | Record snow depth 66.0 cm (26.0 in) |
| 1996-12-29 | Record snow depth | Record snow depth 78.7 cm (31.0 in) |
| 2000-07-30 | Record high maximum temperature | Record high maximum temperature 38.9 C (102.0 F) |
| 2002-07-11 | Record high maximum temperature | Record high maximum temperature 40.0 C (104.0 F) |
| 2009-08-07 | Record daily precipitation | Record daily precipitation 38.6 mm (1.5 in) |
Wettest Day of Each Month
Aug: 38.6 mm (1.5 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 22.4 mm (0.9 in) | 7 January 1962 |
| Feb | 15.7 mm (0.6 in) | 22 February 2003 |
| Mar | 24.4 mm (1.0 in) | 14 March 2026 |
| Apr | 33.3 mm (1.3 in) | 26 April 1975 |
| May | 35.8 mm (1.4 in) | 23 May 1980 |
| Jun | 36.1 mm (1.4 in) | 4 June 2001 |
| Jul | 36.3 mm (1.4 in) | 10 July 1983 |
| Aug | 38.6 mm (1.5 in) | 7 August 2009 |
| Sep | 33.8 mm (1.3 in) | 8 September 1995 |
| Oct | 32.0 mm (1.3 in) | 1 October 2000 |
| Nov | 23.6 mm (0.9 in) | 19 November 2007 |
| Dec | 24.1 mm (0.9 in) | 25 December 1996 |
Period of Record Coverage
1927 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1927 | 107 | 29% | No |
| 1928 | 43 | 12% | No |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 352 | 96% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 359 | 98% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | 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 | 365 | 100% | Yes |
| 1965 | 364 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 365 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 364 | 100% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 364 | 99% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 362 | 99% | 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 | 364 | 100% | Yes |
| 1987 | 363 | 99% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 364 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 180 | 49% | No |
| 1992 | 330 | 90% | Yes |
| 1993 | 361 | 99% | Yes |
| 1994 | 362 | 99% | Yes |
| 1995 | 364 | 100% | Yes |
| 1996 | 352 | 96% | Yes |
| 1997 | 313 | 86% | No |
| 1998 | 357 | 98% | Yes |
| 1999 | 361 | 99% | Yes |
| 2000 | 360 | 98% | Yes |
| 2001 | 363 | 99% | Yes |
| 2002 | 363 | 99% | Yes |
| 2003 | 363 | 99% | Yes |
| 2004 | 362 | 99% | Yes |
| 2005 | 357 | 98% | Yes |
| 2006 | 362 | 99% | Yes |
| 2007 | 364 | 100% | Yes |
| 2008 | 349 | 95% | Yes |
| 2009 | 364 | 100% | Yes |
| 2010 | 354 | 97% | Yes |
| 2011 | 349 | 96% | Yes |
| 2012 | 249 | 68% | No |
| 2024 | 203 | 55% | No |
| 2025 | 340 | 93% | Yes |
| 2026 | 272 | 75% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 12 October 2026 | Drummond Aviation, US | daily snow depth (Tie, Provisional) | 10.2 cm (4.0 in) | tie | 44 years | 5 of 100 (Routine) |
| 11 October 2026 | Drummond Aviation, US | daily snowfall (Provisional) | 17.3 cm (6.8 in) | 17.3 cm (6.8 in) | 97 years | 79 of 100 (Major) |
| 11 October 2026 | Drummond Aviation, US | monthly snow depth (Provisional) | 15.2 cm (6.0 in) | 5.0 cm (2.0 in) | 74 years | 59 of 100 (Notable) |
| 19 September 2026 | Drummond Aviation, US | daily rain (Provisional) | 17.0 mm (0.7 in) | 1.3 mm (0.05 in) | 31 years | 20 of 100 (Routine) |
| 7 September 2026 | Drummond Aviation, US | daily rain (Provisional) | 24.1 mm (0.9 in) | 15.2 mm (0.6 in) | 64 years | 20 of 100 (Routine) |
| 5 September 2026 | Drummond Aviation, US | daily rain (Provisional) | 10.9 mm (0.4 in) | 1.5 mm (0.06 in) | 19 years | 18 of 100 (Routine) |
| 26 August 2026 | Drummond Aviation, US | daily high max (Tie, Provisional) | 35.6 C (96.1 F) | tie | 16 years | 3 of 100 (Routine) |
| 14 August 2026 | Drummond Aviation, US | daily high min (Tie) | 11.7 C (53.1 F) | tie | 53 years | 6 of 100 (Routine) |
| 25 July 2026 | Drummond Aviation, US | daily high max | 36.7 C (98.1 F) | 0.6 C (1.1 F) | 20 years | 17 of 100 (Routine) |
| 18 July 2026 | Drummond Aviation, US | daily rain | 20.1 mm (0.8 in) | 4.6 mm (0.18 in) | 39 years | 20 of 100 (Routine) |
| 29 June 2026 | Drummond Aviation, US | daily low max | 11.7 C (53.1 F) | 0.5 C (0.9 F) | 76 years | 33 of 100 (Routine) |
| 8 June 2026 | Drummond Aviation, US | daily low min | -3.9 C (25.0 F) | 2.8 C (5.0 F) | 72 years | 39 of 100 (Notable) |
| 27 April 2026 | Drummond Aviation, US | daily low min | -7.8 C (18.0 F) | 0.6 C (1.1 F) | 17 years | 16 of 100 (Routine) |
| 21 April 2026 | Drummond Aviation, US | daily high max | 27.8 C (82.0 F) | 1.1 C (2.0 F) | 45 years | 24 of 100 (Routine) |
| 3 April 2026 | Drummond Aviation, US | daily rain | 3.8 mm (0.15 in) | 0.2 mm (0.01 in) | 40 years | 20 of 100 (Routine) |
| 25 March 2026 | Drummond Aviation, US | daily rain | 4.6 mm (0.18 in) | 0.5 mm (0.02 in) | 76 years | 20 of 100 (Routine) |
| 25 March 2026 | Drummond Aviation, US | daily high min | 6.1 C (43.0 F) | 1.1 C (2.0 F) | 0 years | 11 of 100 (Routine) |
| 21 March 2026 | Drummond Aviation, US | daily high max | 22.8 C (73.0 F) | 1.7 C (3.1 F) | 27 years | 20 of 100 (Routine) |
| 20 March 2026 | Drummond Aviation, US | daily high max | 23.3 C (73.9 F) | 2.2 C (4.0 F) | 27 years | 21 of 100 (Routine) |
| 19 March 2026 | Drummond Aviation, US | daily high max | 21.7 C (71.1 F) | 1.1 C (2.0 F) | 27 years | 19 of 100 (Routine) |
Climate Trend
61 complete years, 1949 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1949 | 3.5 C | -2.04 C |
| 1950 | 3.2 C | -2.30 C |
| 1951 | 3.1 C | -2.45 C |
| 1952 | 3.6 C | -1.96 C |
| 1953 | 5.9 C | +0.36 C |
| 1954 | 4.5 C | -1.00 C |
| 1955 | 2.6 C | -2.92 C |
| 1956 | 3.9 C | -1.62 C |
| 1957 | 4.1 C | -1.41 C |
| 1958 | 5.4 C | -0.15 C |
| 1959 | 3.9 C | -1.65 C |
| 1960 | 3.8 C | -1.74 C |
| 1961 | 5.0 C | -0.53 C |
| 1962 | 3.1 C | -2.47 C |
| 1963 | 5.3 C | -0.21 C |
| 1964 | 5.3 C | -0.20 C |
| 1965 | 5.8 C | +0.23 C |
| 1966 | 6.6 C | +1.02 C |
| 1967 | 6.5 C | +0.99 C |
| 1968 | 5.5 C | -0.02 C |
| 1969 | 5.0 C | -0.55 C |
| 1970 | 5.3 C | -0.26 C |
| 1971 | 5.9 C | +0.36 C |
| 1972 | 5.6 C | +0.04 C |
| 1973 | 6.2 C | +0.62 C |
| 1974 | 6.6 C | +1.07 C |
| 1975 | 5.1 C | -0.41 C |
| 1976 | 6.7 C | +1.19 C |
| 1977 | 6.1 C | +0.60 C |
| 1978 | 5.6 C | +0.06 C |
| 1979 | 5.3 C | -0.20 C |
| 1980 | 6.4 C | +0.81 C |
| 1981 | 7.2 C | +1.63 C |
| 1982 | 5.2 C | -0.34 C |
| 1983 | 6.2 C | +0.65 C |
| 1984 | 6.5 C | +0.96 C |
| 1985 | 5.0 C | -0.56 C |
| 1986 | 6.4 C | +0.90 C |
| 1987 | 6.7 C | +1.16 C |
| 1988 | 7.0 C | +1.49 C |
| 1989 | 5.6 C | +0.10 C |
| 1990 | 7.2 C | +1.66 C |
| 1993 | 4.5 C | -1.09 C |
| 1994 | 6.9 C | +1.35 C |
| 1995 | 5.9 C | +0.38 C |
| 1996 | 4.9 C | -0.67 C |
| 1998 | 5.8 C | +0.23 C |
| 1999 | 6.0 C | +0.41 C |
| 2000 | 6.0 C | +0.48 C |
| 2001 | 5.7 C | +0.16 C |
| 2002 | 5.8 C | +0.26 C |
| 2003 | 7.1 C | +1.54 C |
| 2004 | 6.7 C | +1.17 C |
| 2005 | 5.9 C | +0.31 C |
| 2006 | 7.1 C | +1.57 C |
| 2007 | 6.9 C | +1.34 C |
| 2008 | 5.4 C | -0.19 C |
| 2009 | 5.7 C | +0.18 C |
| 2010 | 5.6 C | +0.10 C |
| 2011 | 6.1 C | +0.57 C |
| 2025 | 6.7 C | +1.14 C |
The annual mean temperature here has risen by 0.4 C (0.2 to 0.5) per decade over 1949 to 2025. In Fahrenheit: 0.7 F (0.4 to 0.9) per decade. The slope is a straight line fitted to 61 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.4 C (0.2 to 0.5) per decade | 0.7 F (0.4 to 0.9) per decade | 1949 to 2025 | 61 | Rise |
| Mean daily maximum | 0.4 C (0.3 to 0.5) per decade | 0.7 F (0.5 to 0.9) per decade | 1949 to 2025 | 61 | Rise |
| Mean daily minimum | 0.4 C (0.2 to 0.5) per decade | 0.6 F (0.4 to 0.9) per decade | 1949 to 2025 | 61 | 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
1927 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 40.0 C (104.0 F) | 2002 | 35.6 C (96.1 F) | 69 |
| Coldest night (TNn) | -44.4 C (-47.9 F) | 1957 | -32.2 C (-26.0 F) | 69 |
| Wettest day (Rx1day) | 38.6 mm (1.5 in) | 2009 | 22.4 mm (0.9 in) | 69 |
| Wettest five days (Rx5day) | 85.1 mm (3.4 in) | 1980 | 34.9 mm (1.4 in) | 69 |
| Longest dry spell (CDD) | 73 days | 1969 | 29 days | 69 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1927 | 34.4 C (93.9 F) |
| 1928 | 18.9 C (66.0 F) |
| 1949 | 35.6 C (96.1 F) |
| 1950 | 35.0 C (95.0 F) |
| 1951 | 33.3 C (91.9 F) |
| 1952 | 33.9 C (93.0 F) |
| 1953 | 36.1 C (97.0 F) |
| 1954 | 33.9 C (93.0 F) |
| 1955 | 34.4 C (93.9 F) |
| 1956 | 32.8 C (91.0 F) |
| 1957 | 34.4 C (93.9 F) |
| 1958 | 33.3 C (91.9 F) |
| 1959 | 35.6 C (96.1 F) |
| 1960 | 37.8 C (100.0 F) |
| 1961 | 38.3 C (100.9 F) |
| 1962 | 31.1 C (88.0 F) |
| 1963 | 35.0 C (95.0 F) |
| 1964 | 33.9 C (93.0 F) |
| 1965 | 35.0 C (95.0 F) |
| 1966 | 36.7 C (98.1 F) |
| 1967 | 35.6 C (96.1 F) |
| 1968 | 35.0 C (95.0 F) |
| 1969 | 36.7 C (98.1 F) |
| 1970 | 36.7 C (98.1 F) |
| 1971 | 36.1 C (97.0 F) |
| 1972 | 35.0 C (95.0 F) |
| 1973 | 38.3 C (100.9 F) |
| 1974 | 35.6 C (96.1 F) |
| 1975 | 36.7 C (98.1 F) |
| 1976 | 35.0 C (95.0 F) |
| 1977 | 34.4 C (93.9 F) |
| 1978 | 35.0 C (95.0 F) |
| 1979 | 36.1 C (97.0 F) |
| 1980 | 35.0 C (95.0 F) |
| 1981 | 35.6 C (96.1 F) |
| 1982 | 33.3 C (91.9 F) |
| 1983 | 38.3 C (100.9 F) |
| 1984 | 35.6 C (96.1 F) |
| 1985 | 36.7 C (98.1 F) |
| 1986 | 35.6 C (96.1 F) |
| 1987 | 35.0 C (95.0 F) |
| 1988 | 36.1 C (97.0 F) |
| 1989 | 35.6 C (96.1 F) |
| 1990 | 37.8 C (100.0 F) |
| 1991 | 27.8 C (82.0 F) |
| 1992 | 36.1 C (97.0 F) |
| 1993 | 33.3 C (91.9 F) |
| 1994 | 36.1 C (97.0 F) |
| 1995 | 35.0 C (95.0 F) |
| 1996 | 36.1 C (97.0 F) |
| 1997 | 35.0 C (95.0 F) |
| 1998 | 37.8 C (100.0 F) |
| 1999 | 35.6 C (96.1 F) |
| 2000 | 38.9 C (102.0 F) |
| 2001 | 35.6 C (96.1 F) |
| 2002 | 40.0 C (104.0 F) |
| 2003 | 38.9 C (102.0 F) |
| 2004 | 37.8 C (100.0 F) |
| 2005 | 36.1 C (97.0 F) |
| 2006 | 39.4 C (102.9 F) |
| 2007 | 38.3 C (100.9 F) |
| 2008 | 36.7 C (98.1 F) |
| 2009 | 35.6 C (96.1 F) |
| 2010 | 35.6 C (96.1 F) |
| 2011 | 35.6 C (96.1 F) |
| 2012 | 36.7 C (98.1 F) |
| 2024 | 37.8 C (100.0 F) |
| 2025 | 35.6 C (96.1 F) |
| 2026 | 36.7 C (98.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1927 | -1.1 C (30.0 F) |
| 1928 | -27.8 C (-18.0 F) |
| 1949 | -37.8 C (-36.0 F) |
| 1950 | -36.7 C (-34.1 F) |
| 1951 | -33.9 C (-29.0 F) |
| 1952 | -32.2 C (-26.0 F) |
| 1953 | -24.4 C (-11.9 F) |
| 1954 | -39.4 C (-38.9 F) |
| 1955 | -37.8 C (-36.0 F) |
| 1956 | -37.2 C (-35.0 F) |
| 1957 | -44.4 C (-47.9 F) |
| 1958 | -24.4 C (-11.9 F) |
| 1959 | -40.0 C (-40.0 F) |
| 1960 | -34.4 C (-29.9 F) |
| 1961 | -34.4 C (-29.9 F) |
| 1962 | -43.9 C (-47.0 F) |
| 1963 | -40.6 C (-41.1 F) |
| 1964 | -39.4 C (-38.9 F) |
| 1965 | -28.9 C (-20.0 F) |
| 1966 | -23.9 C (-11.0 F) |
| 1967 | -27.2 C (-17.0 F) |
| 1968 | -31.7 C (-25.1 F) |
| 1969 | -36.7 C (-34.1 F) |
| 1970 | -30.6 C (-23.1 F) |
| 1971 | -34.4 C (-29.9 F) |
| 1972 | -37.8 C (-36.0 F) |
| 1973 | -31.7 C (-25.1 F) |
| 1974 | -35.6 C (-32.1 F) |
| 1975 | -33.3 C (-27.9 F) |
| 1976 | -28.9 C (-20.0 F) |
| 1977 | -30.0 C (-22.0 F) |
| 1978 | -40.0 C (-40.0 F) |
| 1979 | -37.2 C (-35.0 F) |
| 1980 | -30.0 C (-22.0 F) |
| 1981 | -36.7 C (-34.1 F) |
| 1982 | -39.4 C (-38.9 F) |
| 1983 | -41.7 C (-43.1 F) |
| 1984 | -29.4 C (-20.9 F) |
| 1985 | -32.2 C (-26.0 F) |
| 1986 | -31.1 C (-24.0 F) |
| 1987 | -28.9 C (-20.0 F) |
| 1988 | -30.0 C (-22.0 F) |
| 1989 | -37.2 C (-35.0 F) |
| 1990 | -38.3 C (-36.9 F) |
| 1991 | -29.4 C (-20.9 F) |
| 1992 | -24.4 C (-11.9 F) |
| 1993 | -31.1 C (-24.0 F) |
| 1994 | -28.3 C (-18.9 F) |
| 1995 | -26.1 C (-15.0 F) |
| 1996 | -38.3 C (-36.9 F) |
| 1997 | -35.6 C (-32.1 F) |
| 1998 | -34.4 C (-29.9 F) |
| 1999 | -25.6 C (-14.1 F) |
| 2000 | -28.9 C (-20.0 F) |
| 2001 | -26.1 C (-15.0 F) |
| 2002 | -28.9 C (-20.0 F) |
| 2003 | -34.4 C (-29.9 F) |
| 2004 | -37.8 C (-36.0 F) |
| 2005 | -33.3 C (-27.9 F) |
| 2006 | -29.4 C (-20.9 F) |
| 2007 | -26.7 C (-16.1 F) |
| 2008 | -32.2 C (-26.0 F) |
| 2009 | -31.1 C (-24.0 F) |
| 2010 | -32.2 C (-26.0 F) |
| 2011 | -26.7 C (-16.1 F) |
| 2012 | -19.4 C (-2.9 F) |
| 2024 | -15.0 C (5.0 F) |
| 2025 | -42.8 C (-45.0 F) |
| 2026 | -18.9 C (-2.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1927 | 19.8 mm (0.8 in) |
| 1928 | 10.9 mm (0.4 in) |
| 1949 | 15.5 mm (0.6 in) |
| 1950 | 33.5 mm (1.3 in) |
| 1951 | 20.6 mm (0.8 in) |
| 1952 | 21.8 mm (0.9 in) |
| 1953 | 27.7 mm (1.1 in) |
| 1954 | 20.8 mm (0.8 in) |
| 1955 | 17.0 mm (0.7 in) |
| 1956 | 17.3 mm (0.7 in) |
| 1957 | 30.5 mm (1.2 in) |
| 1958 | 16.8 mm (0.7 in) |
| 1959 | 16.0 mm (0.6 in) |
| 1960 | 10.4 mm (0.4 in) |
| 1961 | 19.3 mm (0.8 in) |
| 1962 | 22.4 mm (0.9 in) |
| 1963 | 27.9 mm (1.1 in) |
| 1964 | 20.1 mm (0.8 in) |
| 1965 | 23.4 mm (0.9 in) |
| 1966 | 17.5 mm (0.7 in) |
| 1967 | 17.3 mm (0.7 in) |
| 1968 | 24.4 mm (1.0 in) |
| 1969 | 24.4 mm (1.0 in) |
| 1970 | 30.5 mm (1.2 in) |
| 1971 | 29.7 mm (1.2 in) |
| 1972 | 17.0 mm (0.7 in) |
| 1973 | 30.2 mm (1.2 in) |
| 1974 | 24.9 mm (1.0 in) |
| 1975 | 33.3 mm (1.3 in) |
| 1976 | 19.1 mm (0.8 in) |
| 1977 | 15.2 mm (0.6 in) |
| 1978 | 16.8 mm (0.7 in) |
| 1979 | 30.7 mm (1.2 in) |
| 1980 | 35.8 mm (1.4 in) |
| 1981 | 18.3 mm (0.7 in) |
| 1982 | 19.1 mm (0.8 in) |
| 1983 | 36.3 mm (1.4 in) |
| 1984 | 33.5 mm (1.3 in) |
| 1985 | 36.1 mm (1.4 in) |
| 1986 | 17.3 mm (0.7 in) |
| 1987 | 19.6 mm (0.8 in) |
| 1988 | 33.0 mm (1.3 in) |
| 1989 | 17.8 mm (0.7 in) |
| 1990 | 21.6 mm (0.9 in) |
| 1991 | 17.3 mm (0.7 in) |
| 1992 | 23.1 mm (0.9 in) |
| 1993 | 22.9 mm (0.9 in) |
| 1994 | 27.2 mm (1.1 in) |
| 1995 | 33.8 mm (1.3 in) |
| 1996 | 24.1 mm (0.9 in) |
| 1997 | 30.0 mm (1.2 in) |
| 1998 | 33.3 mm (1.3 in) |
| 1999 | 16.0 mm (0.6 in) |
| 2000 | 32.0 mm (1.3 in) |
| 2001 | 36.1 mm (1.4 in) |
| 2002 | 19.8 mm (0.8 in) |
| 2003 | 17.3 mm (0.7 in) |
| 2004 | 25.1 mm (1.0 in) |
| 2005 | 18.8 mm (0.7 in) |
| 2006 | 24.4 mm (1.0 in) |
| 2007 | 27.9 mm (1.1 in) |
| 2008 | 22.6 mm (0.9 in) |
| 2009 | 38.6 mm (1.5 in) |
| 2010 | 14.0 mm (0.6 in) |
| 2011 | 27.2 mm (1.1 in) |
| 2012 | 10.4 mm (0.4 in) |
| 2024 | 15.7 mm (0.6 in) |
| 2025 | 17.8 mm (0.7 in) |
| 2026 | 24.4 mm (1.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1927 | 35.1 mm (1.4 in) |
| 1928 | 19.0 mm (0.7 in) |
| 1949 | 46.3 mm (1.8 in) |
| 1950 | 49.8 mm (2.0 in) |
| 1951 | 24.2 mm (1.0 in) |
| 1952 | 36.5 mm (1.4 in) |
| 1953 | 39.2 mm (1.5 in) |
| 1954 | 33.5 mm (1.3 in) |
| 1955 | 29.3 mm (1.2 in) |
| 1956 | 25.2 mm (1.0 in) |
| 1957 | 55.1 mm (2.2 in) |
| 1958 | 33.0 mm (1.3 in) |
| 1959 | 31.8 mm (1.3 in) |
| 1960 | 16.0 mm (0.6 in) |
| 1961 | 39.8 mm (1.6 in) |
| 1962 | 32.0 mm (1.3 in) |
| 1963 | 43.5 mm (1.7 in) |
| 1964 | 40.8 mm (1.6 in) |
| 1965 | 36.4 mm (1.4 in) |
| 1966 | 30.2 mm (1.2 in) |
| 1967 | 34.6 mm (1.4 in) |
| 1968 | 33.3 mm (1.3 in) |
| 1969 | 80.5 mm (3.2 in) |
| 1970 | 54.1 mm (2.1 in) |
| 1971 | 41.4 mm (1.6 in) |
| 1972 | 21.3 mm (0.8 in) |
| 1973 | 30.2 mm (1.2 in) |
| 1974 | 31.5 mm (1.2 in) |
| 1975 | 54.4 mm (2.1 in) |
| 1976 | 26.5 mm (1.0 in) |
| 1977 | 33.5 mm (1.3 in) |
| 1978 | 33.6 mm (1.3 in) |
| 1979 | 30.7 mm (1.2 in) |
| 1980 | 85.1 mm (3.4 in) |
| 1981 | 44.4 mm (1.7 in) |
| 1982 | 31.1 mm (1.2 in) |
| 1983 | 42.9 mm (1.7 in) |
| 1984 | 37.4 mm (1.5 in) |
| 1985 | 45.8 mm (1.8 in) |
| 1986 | 25.7 mm (1.0 in) |
| 1987 | 27.7 mm (1.1 in) |
| 1988 | 38.4 mm (1.5 in) |
| 1989 | 48.8 mm (1.9 in) |
| 1990 | 28.5 mm (1.1 in) |
| 1991 | 34.9 mm (1.4 in) |
| 1992 | 48.8 mm (1.9 in) |
| 1993 | 38.7 mm (1.5 in) |
| 1994 | 46.6 mm (1.8 in) |
| 1995 | 50.0 mm (2.0 in) |
| 1996 | 43.0 mm (1.7 in) |
| 1997 | 51.9 mm (2.0 in) |
| 1998 | 42.2 mm (1.7 in) |
| 1999 | 22.5 mm (0.9 in) |
| 2000 | 42.8 mm (1.7 in) |
| 2001 | 62.0 mm (2.4 in) |
| 2002 | 36.0 mm (1.4 in) |
| 2003 | 34.4 mm (1.4 in) |
| 2004 | 32.8 mm (1.3 in) |
| 2005 | 31.5 mm (1.2 in) |
| 2006 | 32.7 mm (1.3 in) |
| 2007 | 34.1 mm (1.3 in) |
| 2008 | 46.0 mm (1.8 in) |
| 2009 | 47.5 mm (1.9 in) |
| 2010 | 22.6 mm (0.9 in) |
| 2011 | 34.8 mm (1.4 in) |
| 2012 | 21.6 mm (0.9 in) |
| 2024 | 16.7 mm (0.7 in) |
| 2025 | 33.2 mm (1.3 in) |
| 2026 | 46.5 mm (1.8 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1927 | 27 days |
| 1928 | 31 days |
| 1949 | 40 days |
| 1950 | 27 days |
| 1951 | 20 days |
| 1952 | 47 days |
| 1953 | 37 days |
| 1954 | 44 days |
| 1955 | 44 days |
| 1956 | 42 days |
| 1957 | 21 days |
| 1958 | 31 days |
| 1959 | 43 days |
| 1960 | 32 days |
| 1961 | 30 days |
| 1962 | 23 days |
| 1963 | 23 days |
| 1964 | 23 days |
| 1965 | 26 days |
| 1966 | 25 days |
| 1967 | 33 days |
| 1968 | 27 days |
| 1969 | 73 days |
| 1970 | 24 days |
| 1971 | 22 days |
| 1972 | 24 days |
| 1973 | 35 days |
| 1974 | 25 days |
| 1975 | 17 days |
| 1976 | 38 days |
| 1977 | 42 days |
| 1978 | 40 days |
| 1979 | 66 days |
| 1980 | 28 days |
| 1981 | 25 days |
| 1982 | 23 days |
| 1983 | 21 days |
| 1984 | 36 days |
| 1985 | 32 days |
| 1986 | 25 days |
| 1987 | 32 days |
| 1988 | 39 days |
| 1989 | 17 days |
| 1990 | 29 days |
| 1991 | 18 days |
| 1992 | 44 days |
| 1993 | 22 days |
| 1994 | 25 days |
| 1995 | 21 days |
| 1996 | 34 days |
| 1997 | 38 days |
| 1998 | 35 days |
| 1999 | 53 days |
| 2000 | 31 days |
| 2001 | 32 days |
| 2002 | 29 days |
| 2003 | 28 days |
| 2004 | 32 days |
| 2005 | 38 days |
| 2006 | 38 days |
| 2007 | 38 days |
| 2008 | 19 days |
| 2009 | 29 days |
| 2010 | 20 days |
| 2011 | 23 days |
| 2012 | 27 days |
| 2024 | 28 days |
| 2025 | 24 days |
| 2026 | 32 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
61 years with a frostAcross 61 years with a frost, the median last spring frost at Drummond Aviation falls on 15 June and the median first autumn frost on 29 August, which leaves a median of 71 days between them.
In 1980 to 2025 the median growing season was 82 days. That is 21 days more than in 1949 to 1978.
Fitted over all years, the growing season changes by +6.5 days per decade at this station.
| Measure | Median, all years | Earliest period (1949 to 1978) | Recent period (1980 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 15 June | 22 June | 12 June | 10 days earlier | -1.4 days per decade |
| First autumn frost | 29 August | 20 August | 2 September | 13 days later | +5.0 days per decade |
| Growing days | 71 days | 61 days | 82 days | 21 days more | +6.5 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
63 years, 1949 to 2025A day with at least 23.2 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 44.2 mm (1.7 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 23.2 mm (0.9 in) | |
| 5 years | 29.6 mm (1.2 in) | |
| 10 years | 33.5 mm (1.3 in) | |
| 25 years | 38.1 mm (1.5 in) | |
| 50 years | 41.2 mm (1.6 in) | |
| 100 years | 44.2 mm (1.7 in) | Longer than the 63 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, 63 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: 38.6 mm (1.5 in) in 2009; 36.3 mm (1.4 in) in 1983; 36.1 mm (1.4 in) in 1985.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Drummond Aviation, at 1965. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1965 ran 1.2 C (2.1 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1965 | +1.2 | +2.1 | 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-17).