Billings Intl AP Weather Records (USW00024033)
Record envelope, standing records and threshold days for Billings Intl AP (USW00024033), Montana, United States, with 79 years of record.
Key Facts for Billings Intl AP
- Billings Intl AP (USW00024033) is a weather station in Montana, United States at 45.81 latitude and -108.55 longitude, 1,094 m (3,590 ft) above sea level.
- The station reports from 1948 to 2026, 79 years of record.
- 1,464 records set at Billings Intl AP still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Billings Intl AP set a daily record precipitation of 18.8 mm (0.7 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: Montana, United States, 45.81 latitude, -108.55 longitude.
- Elevation: 1,094 m (3,590 ft).
- Period of record: 1948 to 2026, 79 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
20 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 20.0 C (68.0 F) | -34.4 C (-29.9 F) | 18.9 C (66.0 F) | -21.1 C (-6.0 F) |
| Feb | 22.2 C (72.0 F) | -33.3 C (-27.9 F) | 19.4 C (66.9 F) | -18.9 C (-2.0 F) |
| Mar | 28.3 C (82.9 F) | -29.3 C (-20.7 F) | 28.3 C (82.9 F) | -14.4 C (6.1 F) |
| Apr | 32.2 C (90.0 F) | -16.1 C (3.0 F) | 29.4 C (84.9 F) | -4.4 C (24.1 F) |
| May | 35.0 C (95.0 F) | -10.0 C (14.0 F) | 35.0 C (95.0 F) | -2.2 C (28.0 F) |
| Jun | 40.6 C (105.1 F) | 0.0 C (32.0 F) | 32.8 C (91.0 F) | 6.7 C (44.1 F) |
| Jul | 43.9 C (111.0 F) | 5.0 C (41.0 F) | 43.9 C (111.0 F) | 11.7 C (53.1 F) |
| Aug | 40.6 C (105.1 F) | 1.7 C (35.1 F) | 40.0 C (104.0 F) | 8.9 C (48.0 F) |
| Sep | 39.4 C (102.9 F) | -5.6 C (21.9 F) | 33.3 C (91.9 F) | 6.1 C (43.0 F) |
| Oct | 32.8 C (91.0 F) | -21.7 C (-7.1 F) | 31.1 C (88.0 F) | 0.0 C (32.0 F) |
| Nov | 25.0 C (77.0 F) | -30.0 C (-22.0 F) | n/a | n/a |
| Dec | 20.6 C (69.1 F) | -35.6 C (-32.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1948 | 12 |
| 1949 | 24 |
| 1950 | 38 |
| 1951 | 37 |
| 1952 | 6 |
| 1953 | 15 |
| 1954 | 32 |
| 1955 | 19 |
| 1956 | 13 |
| 1957 | 10 |
| 1958 | 18 |
| 1959 | 13 |
| 1960 | 17 |
| 1961 | 19 |
| 1962 | 23 |
| 1963 | 18 |
| 1964 | 12 |
| 1965 | 27 |
| 1966 | 19 |
| 1967 | 12 |
| 1968 | 17 |
| 1969 | 24 |
| 1970 | 8 |
| 1971 | 14 |
| 1972 | 33 |
| 1973 | 15 |
| 1974 | 18 |
| 1975 | 7 |
| 1976 | 4 |
| 1977 | 12 |
| 1978 | 17 |
| 1979 | 13 |
| 1980 | 28 |
| 1981 | 17 |
| 1982 | 20 |
| 1983 | 34 |
| 1984 | 19 |
| 1985 | 45 |
| 1986 | 19 |
| 1987 | 26 |
| 1988 | 27 |
| 1989 | 24 |
| 1990 | 20 |
| 1991 | 14 |
| 1992 | 29 |
| 1993 | 12 |
| 1994 | 16 |
| 1995 | 24 |
| 1996 | 19 |
| 1997 | 22 |
| 1998 | 6 |
| 1999 | 20 |
| 2000 | 18 |
| 2001 | 6 |
| 2002 | 25 |
| 2003 | 30 |
| 2004 | 10 |
| 2005 | 18 |
| 2006 | 14 |
| 2007 | 11 |
| 2008 | 14 |
| 2009 | 16 |
| 2010 | 11 |
| 2011 | 14 |
| 2012 | 21 |
| 2013 | 12 |
| 2014 | 17 |
| 2015 | 28 |
| 2016 | 14 |
| 2017 | 13 |
| 2018 | 12 |
| 2019 | 10 |
| 2020 | 21 |
| 2021 | 41 |
| 2022 | 17 |
| 2023 | 12 |
| 2024 | 16 |
| 2025 | 17 |
| 2026 | 19 |
All-Time Record Progression
9 new records| Date | Kind | Detail |
|---|---|---|
| 1983-12-24 | Record low minimum temperature | Record low minimum temperature -35.6 C (-32.1 F) |
| 1997-06-08 | Record daily precipitation | Record daily precipitation 73.9 mm (2.9 in) |
| 2002-07-12 | Record high maximum temperature | Record high maximum temperature 41.7 C (107.1 F) |
| 2002-07-14 | Record high maximum temperature | Record high maximum temperature 42.2 C (108.0 F) |
| 2007-07-20 | Record high minimum temperature | Record high minimum temperature 23.3 C (73.9 F) |
| 2011-05-24 | Record daily precipitation | Record daily precipitation 79.2 mm (3.1 in) |
| 2012-07-20 | Record high minimum temperature | Record high minimum temperature 23.9 C (75.0 F) |
| 2023-08-18 | Record high minimum temperature | Record high minimum temperature 24.4 C (75.9 F) |
| 2026-07-12 | Record high maximum temperature | Record high maximum temperature 43.9 C (111.0 F) |
Wettest Day of Each Month
May: 79.2 mm (3.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 31.0 mm (1.2 in) | 2 January 1972 |
| Feb | 16.5 mm (0.6 in) | 25 February 2000 |
| Mar | 28.7 mm (1.1 in) | 29 March 2006 |
| Apr | 64.3 mm (2.5 in) | 28 April 1978 |
| May | 79.2 mm (3.1 in) | 24 May 2011 |
| Jun | 73.9 mm (2.9 in) | 8 June 1997 |
| Jul | 52.3 mm (2.1 in) | 3 July 1993 |
| Aug | 48.3 mm (1.9 in) | 20 August 1965 |
| Sep | 55.6 mm (2.2 in) | 13 September 1966 |
| Oct | 47.2 mm (1.9 in) | 3 October 2016 |
| Nov | 28.2 mm (1.1 in) | 4 November 1968 |
| Dec | 24.9 mm (1.0 in) | 2 December 2013 |
Period of Record Coverage
1948 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1948 | 365 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 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 | 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 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 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 | 365 | 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 | 366 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 366 | 100% | 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 | 366 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 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 | 287 | 79% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 11 October 2026 | Billings Intl AP, US | daily rain (Provisional) | 18.8 mm (0.7 in) | 5.8 mm (0.23 in) | 0 years | 16 of 100 (Routine) |
| 9 October 2026 | Billings Intl AP, US | daily high max (Tie, Provisional) | 29.4 C (84.9 F) | tie | 60 years | 6 of 100 (Routine) |
| 5 October 2026 | Billings Intl AP, US | daily high max (Provisional) | 31.1 C (88.0 F) | 1.1 C (2.0 F) | 4 years | 9 of 100 (Routine) |
| 3 October 2026 | Billings Intl AP, US | daily high min (Tie, Provisional) | 11.1 C (52.0 F) | tie | 15 years | 2 of 100 (Routine) |
| 19 September 2026 | Billings Intl AP, US | daily rain (Provisional) | 32.5 mm (1.3 in) | 15.2 mm (0.6 in) | 25 years | 37 of 100 (Notable) |
| 7 September 2026 | Billings Intl AP, US | daily rain (Provisional) | 34.8 mm (1.4 in) | 1.5 mm (0.06 in) | 12 years | 12 of 100 (Routine) |
| 3 August 2026 | Billings Intl AP, US | daily low max (Tie) | 21.1 C (70.0 F) | tie | 53 years | 5 of 100 (Routine) |
| 1 August 2026 | Billings Intl AP, US | daily high max | 40.0 C (104.0 F) | 1.1 C (2.0 F) | 17 years | 14 of 100 (Routine) |
| 30 July 2026 | Billings Intl AP, US | daily high min | 21.7 C (71.1 F) | 0.6 C (1.1 F) | 4 years | 10 of 100 (Routine) |
| 25 July 2026 | Billings Intl AP, US | daily high max | 38.9 C (102.0 F) | 2.2 C (4.0 F) | 15 years | 15 of 100 (Routine) |
| 15 July 2026 | Billings Intl AP, US | daily rain | 10.9 mm (0.4 in) | 3.0 mm (0.12 in) | 4 years | 12 of 100 (Routine) |
| 13 July 2026 | Billings Intl AP, US | daily high min | 22.2 C (72.0 F) | 1.1 C (2.0 F) | 72 years | 31 of 100 (Routine) |
| 12 July 2026 | Billings Intl AP, US | all-time high max | 43.9 C (111.0 F) | 1.7 C (3.1 F) | 23 years | 37 of 100 (Notable) |
| 11 July 2026 | Billings Intl AP, US | daily high max | 40.0 C (104.0 F) | 2.2 C (4.0 F) | 1 year | 11 of 100 (Routine) |
| 27 June 2026 | Billings Intl AP, US | daily rain | 10.2 mm (0.4 in) | 0.8 mm (0.03 in) | 44 years | 20 of 100 (Routine) |
| 30 May 2026 | Billings Intl AP, US | daily rain | 26.4 mm (1.0 in) | 6.8 mm (0.27 in) | 55 years | 31 of 100 (Routine) |
| 25 May 2026 | Billings Intl AP, US | daily high max (Tie) | 31.1 C (88.0 F) | tie | 43 years | 4 of 100 (Routine) |
| 19 May 2026 | Billings Intl AP, US | daily low min (Tie) | -1.7 C (28.9 F) | tie | 28 years | 3 of 100 (Routine) |
| 13 May 2026 | Billings Intl AP, US | monthly high max (Tie) | 35.0 C (95.0 F) | tie | 41 years | 7 of 100 (Routine) |
| 6 May 2026 | Billings Intl AP, US | daily low min (Tie) | -2.2 C (28.0 F) | tie | 16 years | 2 of 100 (Routine) |
Climate Trend
78 complete years, 1948 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1948 | 8.3 C | -0.33 C |
| 1949 | 7.7 C | -1.01 C |
| 1950 | 6.8 C | -1.90 C |
| 1951 | 6.3 C | -2.41 C |
| 1952 | 8.8 C | +0.18 C |
| 1953 | 10.1 C | +1.41 C |
| 1954 | 8.8 C | +0.12 C |
| 1955 | 7.2 C | -1.42 C |
| 1956 | 8.7 C | -0.01 C |
| 1957 | 7.9 C | -0.78 C |
| 1958 | 9.2 C | +0.53 C |
| 1959 | 8.2 C | -0.42 C |
| 1960 | 9.0 C | +0.37 C |
| 1961 | 9.6 C | +0.89 C |
| 1962 | 8.6 C | -0.08 C |
| 1963 | 8.8 C | +0.16 C |
| 1964 | 8.0 C | -0.64 C |
| 1965 | 7.4 C | -1.30 C |
| 1966 | 8.1 C | -0.57 C |
| 1967 | 8.3 C | -0.35 C |
| 1968 | 8.8 C | +0.17 C |
| 1969 | 7.3 C | -1.35 C |
| 1970 | 7.6 C | -1.05 C |
| 1971 | 7.3 C | -1.33 C |
| 1972 | 6.8 C | -1.85 C |
| 1973 | 8.4 C | -0.31 C |
| 1974 | 8.7 C | +0.07 C |
| 1975 | 6.9 C | -1.80 C |
| 1976 | 8.8 C | +0.13 C |
| 1977 | 8.5 C | -0.19 C |
| 1978 | 5.9 C | -2.76 C |
| 1979 | 8.2 C | -0.51 C |
| 1980 | 9.5 C | +0.84 C |
| 1981 | 10.3 C | +1.62 C |
| 1982 | 7.7 C | -0.99 C |
| 1983 | 9.1 C | +0.45 C |
| 1984 | 8.8 C | +0.09 C |
| 1985 | 7.1 C | -1.57 C |
| 1986 | 9.3 C | +0.59 C |
| 1987 | 10.1 C | +1.45 C |
| 1988 | 10.1 C | +1.39 C |
| 1989 | 7.7 C | -0.94 C |
| 1990 | 9.2 C | +0.53 C |
| 1991 | 9.3 C | +0.59 C |
| 1992 | 9.6 C | +0.94 C |
| 1993 | 7.5 C | -1.12 C |
| 1994 | 9.5 C | +0.87 C |
| 1995 | 8.6 C | -0.09 C |
| 1996 | 6.9 C | -1.78 C |
| 1997 | 8.4 C | -0.25 C |
| 1998 | 9.3 C | +0.59 C |
| 1999 | 9.9 C | +1.25 C |
| 2000 | 8.7 C | -0.01 C |
| 2001 | 9.4 C | +0.78 C |
| 2002 | 8.2 C | -0.48 C |
| 2003 | 9.5 C | +0.88 C |
| 2004 | 9.4 C | +0.72 C |
| 2005 | 9.1 C | +0.44 C |
| 2006 | 10.0 C | +1.33 C |
| 2007 | 9.5 C | +0.87 C |
| 2008 | 8.7 C | +0.04 C |
| 2009 | 8.6 C | -0.09 C |
| 2010 | 8.5 C | -0.14 C |
| 2011 | 8.5 C | -0.17 C |
| 2012 | 10.6 C | +1.90 C |
| 2013 | 9.1 C | +0.42 C |
| 2014 | 8.5 C | -0.16 C |
| 2015 | 10.4 C | +1.71 C |
| 2016 | 10.4 C | +1.76 C |
| 2017 | 9.2 C | +0.49 C |
| 2018 | 7.9 C | -0.75 C |
| 2019 | 7.5 C | -1.19 C |
| 2020 | 9.5 C | +0.85 C |
| 2021 | 10.0 C | +1.29 C |
| 2022 | 8.6 C | -0.03 C |
| 2023 | 9.7 C | +1.04 C |
| 2024 | 10.2 C | +1.55 C |
| 2025 | 9.5 C | +0.85 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1948 to 2025. In Fahrenheit: 0.3 F (0.2 to 0.5) per decade. The slope is a straight line fitted to 78 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 0.3) per decade | 0.3 F (0.2 to 0.5) per decade | 1948 to 2025 | 78 | Rise |
| Mean daily maximum | 0.2 C (0.1 to 0.3) per decade | 0.3 F (0.1 to 0.5) per decade | 1948 to 2025 | 78 | Rise |
| Mean daily minimum | 0.2 C (0.1 to 0.3) per decade | 0.4 F (0.2 to 0.5) per decade | 1948 to 2025 | 78 | 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) | 43.9 C (111.0 F) | 2026 | 38.3 C (100.9 F) | 79 |
| Coldest night (TNn) | -35.6 C (-32.1 F) | 1983 | -27.8 C (-18.0 F) | 79 |
| Wettest day (Rx1day) | 79.2 mm (3.1 in) | 2011 | 30.7 mm (1.2 in) | 79 |
| Wettest five days (Rx5day) | 126.3 mm (5.0 in) | 2011 | 50.3 mm (2.0 in) | 79 |
| Longest dry spell (CDD) | 83 days | 2003 | 31 days | 79 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1948 | 37.8 C (100.0 F) |
| 1949 | 39.4 C (102.9 F) |
| 1950 | 37.8 C (100.0 F) |
| 1951 | 37.2 C (99.0 F) |
| 1952 | 36.7 C (98.1 F) |
| 1953 | 39.4 C (102.9 F) |
| 1954 | 38.3 C (100.9 F) |
| 1955 | 40.0 C (104.0 F) |
| 1956 | 38.9 C (102.0 F) |
| 1957 | 38.3 C (100.9 F) |
| 1958 | 37.8 C (100.0 F) |
| 1959 | 38.9 C (102.0 F) |
| 1960 | 40.6 C (105.1 F) |
| 1961 | 40.6 C (105.1 F) |
| 1962 | 37.2 C (99.0 F) |
| 1963 | 36.7 C (98.1 F) |
| 1964 | 39.4 C (102.9 F) |
| 1965 | 38.3 C (100.9 F) |
| 1966 | 39.4 C (102.9 F) |
| 1967 | 35.6 C (96.1 F) |
| 1968 | 37.2 C (99.0 F) |
| 1969 | 37.8 C (100.0 F) |
| 1970 | 37.8 C (100.0 F) |
| 1971 | 38.9 C (102.0 F) |
| 1972 | 35.6 C (96.1 F) |
| 1973 | 38.3 C (100.9 F) |
| 1974 | 37.8 C (100.0 F) |
| 1975 | 38.3 C (100.9 F) |
| 1976 | 40.0 C (104.0 F) |
| 1977 | 38.3 C (100.9 F) |
| 1978 | 37.2 C (99.0 F) |
| 1979 | 37.2 C (99.0 F) |
| 1980 | 38.3 C (100.9 F) |
| 1981 | 40.0 C (104.0 F) |
| 1982 | 37.2 C (99.0 F) |
| 1983 | 39.4 C (102.9 F) |
| 1984 | 40.6 C (105.1 F) |
| 1985 | 38.9 C (102.0 F) |
| 1986 | 36.7 C (98.1 F) |
| 1987 | 36.7 C (98.1 F) |
| 1988 | 40.0 C (104.0 F) |
| 1989 | 40.0 C (104.0 F) |
| 1990 | 39.4 C (102.9 F) |
| 1991 | 37.2 C (99.0 F) |
| 1992 | 36.7 C (98.1 F) |
| 1993 | 34.4 C (93.9 F) |
| 1994 | 36.7 C (98.1 F) |
| 1995 | 38.9 C (102.0 F) |
| 1996 | 38.3 C (100.9 F) |
| 1997 | 35.0 C (95.0 F) |
| 1998 | 37.8 C (100.0 F) |
| 1999 | 40.6 C (105.1 F) |
| 2000 | 38.9 C (102.0 F) |
| 2001 | 39.4 C (102.9 F) |
| 2002 | 42.2 C (108.0 F) |
| 2003 | 41.7 C (107.1 F) |
| 2004 | 37.8 C (100.0 F) |
| 2005 | 41.1 C (106.0 F) |
| 2006 | 39.4 C (102.9 F) |
| 2007 | 40.0 C (104.0 F) |
| 2008 | 39.4 C (102.9 F) |
| 2009 | 37.8 C (100.0 F) |
| 2010 | 38.3 C (100.9 F) |
| 2011 | 37.8 C (100.0 F) |
| 2012 | 39.4 C (102.9 F) |
| 2013 | 37.2 C (99.0 F) |
| 2014 | 37.8 C (100.0 F) |
| 2015 | 37.2 C (99.0 F) |
| 2016 | 37.2 C (99.0 F) |
| 2017 | 37.8 C (100.0 F) |
| 2018 | 39.4 C (102.9 F) |
| 2019 | 37.2 C (99.0 F) |
| 2020 | 38.9 C (102.0 F) |
| 2021 | 41.7 C (107.1 F) |
| 2022 | 39.4 C (102.9 F) |
| 2023 | 38.3 C (100.9 F) |
| 2024 | 40.6 C (105.1 F) |
| 2025 | 37.8 C (100.0 F) |
| 2026 | 43.9 C (111.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1948 | -26.1 C (-15.0 F) |
| 1949 | -32.8 C (-27.0 F) |
| 1950 | -29.4 C (-20.9 F) |
| 1951 | -30.0 C (-22.0 F) |
| 1952 | -27.8 C (-18.0 F) |
| 1953 | -18.3 C (-0.9 F) |
| 1954 | -32.8 C (-27.0 F) |
| 1955 | -25.6 C (-14.1 F) |
| 1956 | -30.0 C (-22.0 F) |
| 1957 | -33.3 C (-27.9 F) |
| 1958 | -22.8 C (-9.0 F) |
| 1959 | -30.0 C (-22.0 F) |
| 1960 | -27.2 C (-17.0 F) |
| 1961 | -27.2 C (-17.0 F) |
| 1962 | -31.7 C (-25.1 F) |
| 1963 | -32.2 C (-26.0 F) |
| 1964 | -32.2 C (-26.0 F) |
| 1965 | -28.9 C (-20.0 F) |
| 1966 | -28.3 C (-18.9 F) |
| 1967 | -24.4 C (-11.9 F) |
| 1968 | -31.7 C (-25.1 F) |
| 1969 | -30.6 C (-23.1 F) |
| 1970 | -25.6 C (-14.1 F) |
| 1971 | -28.3 C (-18.9 F) |
| 1972 | -32.8 C (-27.0 F) |
| 1973 | -28.3 C (-18.9 F) |
| 1974 | -27.2 C (-17.0 F) |
| 1975 | -24.4 C (-11.9 F) |
| 1976 | -26.1 C (-15.0 F) |
| 1977 | -29.4 C (-20.9 F) |
| 1978 | -30.6 C (-23.1 F) |
| 1979 | -27.2 C (-17.0 F) |
| 1980 | -29.4 C (-20.9 F) |
| 1981 | -28.9 C (-20.0 F) |
| 1982 | -28.3 C (-18.9 F) |
| 1983 | -35.6 C (-32.1 F) |
| 1984 | -25.6 C (-14.1 F) |
| 1985 | -30.6 C (-23.1 F) |
| 1986 | -24.4 C (-11.9 F) |
| 1987 | -20.6 C (-5.1 F) |
| 1988 | -23.9 C (-11.0 F) |
| 1989 | -33.3 C (-27.9 F) |
| 1990 | -32.2 C (-26.0 F) |
| 1991 | -25.6 C (-14.1 F) |
| 1992 | -28.3 C (-18.9 F) |
| 1993 | -26.7 C (-16.1 F) |
| 1994 | -26.7 C (-16.1 F) |
| 1995 | -25.6 C (-14.1 F) |
| 1996 | -33.3 C (-27.9 F) |
| 1997 | -34.4 C (-29.9 F) |
| 1998 | -26.1 C (-15.0 F) |
| 1999 | -19.4 C (-2.9 F) |
| 2000 | -23.9 C (-11.0 F) |
| 2001 | -22.2 C (-8.0 F) |
| 2002 | -20.6 C (-5.1 F) |
| 2003 | -27.2 C (-17.0 F) |
| 2004 | -25.6 C (-14.1 F) |
| 2005 | -27.2 C (-17.0 F) |
| 2006 | -26.7 C (-16.1 F) |
| 2007 | -27.8 C (-18.0 F) |
| 2008 | -28.3 C (-18.9 F) |
| 2009 | -25.0 C (-13.0 F) |
| 2010 | -28.3 C (-18.9 F) |
| 2011 | -26.1 C (-15.0 F) |
| 2012 | -24.4 C (-11.9 F) |
| 2013 | -29.3 C (-20.7 F) |
| 2014 | -30.5 C (-22.9 F) |
| 2015 | -21.6 C (-6.9 F) |
| 2016 | -28.2 C (-18.8 F) |
| 2017 | -27.1 C (-16.8 F) |
| 2018 | -26.0 C (-14.8 F) |
| 2019 | -28.2 C (-18.8 F) |
| 2020 | -23.8 C (-10.8 F) |
| 2021 | -29.9 C (-21.8 F) |
| 2022 | -31.6 C (-24.9 F) |
| 2023 | -27.7 C (-17.9 F) |
| 2024 | -32.1 C (-25.8 F) |
| 2025 | -28.2 C (-18.8 F) |
| 2026 | -21.1 C (-6.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1948 | 15.2 mm (0.6 in) |
| 1949 | 19.3 mm (0.8 in) |
| 1950 | 18.5 mm (0.7 in) |
| 1951 | 22.9 mm (0.9 in) |
| 1952 | 71.9 mm (2.8 in) |
| 1953 | 27.4 mm (1.1 in) |
| 1954 | 16.5 mm (0.6 in) |
| 1955 | 62.0 mm (2.4 in) |
| 1956 | 16.3 mm (0.6 in) |
| 1957 | 40.4 mm (1.6 in) |
| 1958 | 47.2 mm (1.9 in) |
| 1959 | 27.9 mm (1.1 in) |
| 1960 | 19.6 mm (0.8 in) |
| 1961 | 30.7 mm (1.2 in) |
| 1962 | 26.2 mm (1.0 in) |
| 1963 | 25.1 mm (1.0 in) |
| 1964 | 47.8 mm (1.9 in) |
| 1965 | 48.3 mm (1.9 in) |
| 1966 | 55.6 mm (2.2 in) |
| 1967 | 30.7 mm (1.2 in) |
| 1968 | 36.8 mm (1.4 in) |
| 1969 | 48.3 mm (1.9 in) |
| 1970 | 23.9 mm (0.9 in) |
| 1971 | 42.4 mm (1.7 in) |
| 1972 | 31.0 mm (1.2 in) |
| 1973 | 29.2 mm (1.1 in) |
| 1974 | 31.0 mm (1.2 in) |
| 1975 | 40.9 mm (1.6 in) |
| 1976 | 31.2 mm (1.2 in) |
| 1977 | 14.2 mm (0.6 in) |
| 1978 | 64.3 mm (2.5 in) |
| 1979 | 16.3 mm (0.6 in) |
| 1980 | 33.8 mm (1.3 in) |
| 1981 | 53.6 mm (2.1 in) |
| 1982 | 33.5 mm (1.3 in) |
| 1983 | 17.5 mm (0.7 in) |
| 1984 | 15.5 mm (0.6 in) |
| 1985 | 24.4 mm (1.0 in) |
| 1986 | 21.6 mm (0.9 in) |
| 1987 | 38.1 mm (1.5 in) |
| 1988 | 28.7 mm (1.1 in) |
| 1989 | 25.4 mm (1.0 in) |
| 1990 | 20.1 mm (0.8 in) |
| 1991 | 37.1 mm (1.5 in) |
| 1992 | 26.7 mm (1.1 in) |
| 1993 | 52.3 mm (2.1 in) |
| 1994 | 27.2 mm (1.1 in) |
| 1995 | 45.2 mm (1.8 in) |
| 1996 | 21.3 mm (0.8 in) |
| 1997 | 73.9 mm (2.9 in) |
| 1998 | 30.5 mm (1.2 in) |
| 1999 | 19.8 mm (0.8 in) |
| 2000 | 17.3 mm (0.7 in) |
| 2001 | 57.7 mm (2.3 in) |
| 2002 | 19.6 mm (0.8 in) |
| 2003 | 18.0 mm (0.7 in) |
| 2004 | 36.8 mm (1.4 in) |
| 2005 | 32.0 mm (1.3 in) |
| 2006 | 28.7 mm (1.1 in) |
| 2007 | 41.1 mm (1.6 in) |
| 2008 | 33.8 mm (1.3 in) |
| 2009 | 18.5 mm (0.7 in) |
| 2010 | 56.9 mm (2.2 in) |
| 2011 | 79.2 mm (3.1 in) |
| 2012 | 15.7 mm (0.6 in) |
| 2013 | 33.3 mm (1.3 in) |
| 2014 | 20.6 mm (0.8 in) |
| 2015 | 28.2 mm (1.1 in) |
| 2016 | 47.2 mm (1.9 in) |
| 2017 | 32.0 mm (1.3 in) |
| 2018 | 39.1 mm (1.5 in) |
| 2019 | 24.6 mm (1.0 in) |
| 2020 | 27.9 mm (1.1 in) |
| 2021 | 16.0 mm (0.6 in) |
| 2022 | 38.1 mm (1.5 in) |
| 2023 | 55.6 mm (2.2 in) |
| 2024 | 51.3 mm (2.0 in) |
| 2025 | 21.1 mm (0.8 in) |
| 2026 | 41.9 mm (1.6 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1948 | 16.2 mm (0.6 in) |
| 1949 | 51.3 mm (2.0 in) |
| 1950 | 25.1 mm (1.0 in) |
| 1951 | 38.6 mm (1.5 in) |
| 1952 | 77.5 mm (3.1 in) |
| 1953 | 34.3 mm (1.4 in) |
| 1954 | 29.3 mm (1.2 in) |
| 1955 | 110.0 mm (4.3 in) |
| 1956 | 25.6 mm (1.0 in) |
| 1957 | 58.7 mm (2.3 in) |
| 1958 | 51.2 mm (2.0 in) |
| 1959 | 42.2 mm (1.7 in) |
| 1960 | 28.5 mm (1.1 in) |
| 1961 | 55.1 mm (2.2 in) |
| 1962 | 50.3 mm (2.0 in) |
| 1963 | 42.4 mm (1.7 in) |
| 1964 | 61.0 mm (2.4 in) |
| 1965 | 70.2 mm (2.8 in) |
| 1966 | 60.2 mm (2.4 in) |
| 1967 | 56.6 mm (2.2 in) |
| 1968 | 58.0 mm (2.3 in) |
| 1969 | 69.9 mm (2.8 in) |
| 1970 | 57.5 mm (2.3 in) |
| 1971 | 56.6 mm (2.2 in) |
| 1972 | 48.2 mm (1.9 in) |
| 1973 | 38.2 mm (1.5 in) |
| 1974 | 57.9 mm (2.3 in) |
| 1975 | 56.4 mm (2.2 in) |
| 1976 | 48.8 mm (1.9 in) |
| 1977 | 32.3 mm (1.3 in) |
| 1978 | 99.0 mm (3.9 in) |
| 1979 | 18.3 mm (0.7 in) |
| 1980 | 41.7 mm (1.6 in) |
| 1981 | 80.2 mm (3.2 in) |
| 1982 | 59.1 mm (2.3 in) |
| 1983 | 38.1 mm (1.5 in) |
| 1984 | 26.1 mm (1.0 in) |
| 1985 | 45.3 mm (1.8 in) |
| 1986 | 45.8 mm (1.8 in) |
| 1987 | 54.1 mm (2.1 in) |
| 1988 | 28.7 mm (1.1 in) |
| 1989 | 34.3 mm (1.4 in) |
| 1990 | 33.7 mm (1.3 in) |
| 1991 | 72.7 mm (2.9 in) |
| 1992 | 49.0 mm (1.9 in) |
| 1993 | 67.3 mm (2.6 in) |
| 1994 | 47.0 mm (1.9 in) |
| 1995 | 67.8 mm (2.7 in) |
| 1996 | 65.0 mm (2.6 in) |
| 1997 | 87.9 mm (3.5 in) |
| 1998 | 71.7 mm (2.8 in) |
| 1999 | 31.3 mm (1.2 in) |
| 2000 | 27.5 mm (1.1 in) |
| 2001 | 59.7 mm (2.4 in) |
| 2002 | 44.5 mm (1.8 in) |
| 2003 | 25.6 mm (1.0 in) |
| 2004 | 42.9 mm (1.7 in) |
| 2005 | 66.5 mm (2.6 in) |
| 2006 | 50.8 mm (2.0 in) |
| 2007 | 64.7 mm (2.5 in) |
| 2008 | 97.3 mm (3.8 in) |
| 2009 | 30.0 mm (1.2 in) |
| 2010 | 86.6 mm (3.4 in) |
| 2011 | 126.3 mm (5.0 in) |
| 2012 | 34.8 mm (1.4 in) |
| 2013 | 54.1 mm (2.1 in) |
| 2014 | 40.8 mm (1.6 in) |
| 2015 | 29.2 mm (1.1 in) |
| 2016 | 68.5 mm (2.7 in) |
| 2017 | 49.3 mm (1.9 in) |
| 2018 | 63.4 mm (2.5 in) |
| 2019 | 35.1 mm (1.4 in) |
| 2020 | 47.0 mm (1.9 in) |
| 2021 | 32.5 mm (1.3 in) |
| 2022 | 39.9 mm (1.6 in) |
| 2023 | 102.3 mm (4.0 in) |
| 2024 | 55.1 mm (2.2 in) |
| 2025 | 35.9 mm (1.4 in) |
| 2026 | 78.5 mm (3.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1948 | 36 days |
| 1949 | 49 days |
| 1950 | 23 days |
| 1951 | 23 days |
| 1952 | 32 days |
| 1953 | 33 days |
| 1954 | 42 days |
| 1955 | 34 days |
| 1956 | 22 days |
| 1957 | 44 days |
| 1958 | 24 days |
| 1959 | 35 days |
| 1960 | 30 days |
| 1961 | 27 days |
| 1962 | 29 days |
| 1963 | 31 days |
| 1964 | 40 days |
| 1965 | 22 days |
| 1966 | 23 days |
| 1967 | 29 days |
| 1968 | 23 days |
| 1969 | 32 days |
| 1970 | 28 days |
| 1971 | 20 days |
| 1972 | 26 days |
| 1973 | 28 days |
| 1974 | 24 days |
| 1975 | 30 days |
| 1976 | 30 days |
| 1977 | 33 days |
| 1978 | 28 days |
| 1979 | 26 days |
| 1980 | 26 days |
| 1981 | 29 days |
| 1982 | 20 days |
| 1983 | 43 days |
| 1984 | 45 days |
| 1985 | 29 days |
| 1986 | 27 days |
| 1987 | 71 days |
| 1988 | 45 days |
| 1989 | 18 days |
| 1990 | 45 days |
| 1991 | 18 days |
| 1992 | 31 days |
| 1993 | 22 days |
| 1994 | 46 days |
| 1995 | 28 days |
| 1996 | 33 days |
| 1997 | 30 days |
| 1998 | 34 days |
| 1999 | 54 days |
| 2000 | 34 days |
| 2001 | 40 days |
| 2002 | 32 days |
| 2003 | 83 days |
| 2004 | 53 days |
| 2005 | 27 days |
| 2006 | 39 days |
| 2007 | 41 days |
| 2008 | 27 days |
| 2009 | 25 days |
| 2010 | 43 days |
| 2011 | 19 days |
| 2012 | 48 days |
| 2013 | 34 days |
| 2014 | 28 days |
| 2015 | 20 days |
| 2016 | 35 days |
| 2017 | 38 days |
| 2018 | 38 days |
| 2019 | 26 days |
| 2020 | 33 days |
| 2021 | 41 days |
| 2022 | 25 days |
| 2023 | 40 days |
| 2024 | 30 days |
| 2025 | 35 days |
| 2026 | 39 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
78 years with a frostAcross 78 years with a frost, the median last spring frost at Billings Intl AP falls on 4 May and the median first autumn frost on 5 October, which leaves a median of 154 days between them.
In 1996 to 2025 the median growing season was 157 days. That is 4 days more than in 1948 to 1977.
Fitted over all years, the growing season changes by +1.8 days per decade at this station.
| Measure | Median, all years | Earliest period (1948 to 1977) | Recent period (1996 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 4 May | 3 May | 5 May | 2 days later | -0.5 days per decade |
| First autumn frost | 5 October | 2 October | 9 October | 7 days later | +1.3 days per decade |
| Growing days | 154 days | 153 days | 157 days | 4 days more | +1.8 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
78 years, 1948 to 2025A day with at least 30.3 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 88.4 mm (3.5 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 30.3 mm (1.2 in) | |
| 5 years | 43.9 mm (1.7 in) | |
| 10 years | 53.6 mm (2.1 in) | |
| 25 years | 66.9 mm (2.6 in) | |
| 50 years | 77.4 mm (3.0 in) | |
| 100 years | 88.4 mm (3.5 in) | Longer than the 78 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, 78 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: 79.2 mm (3.1 in) in 2011; 73.9 mm (2.9 in) in 1997; 71.9 mm (2.8 in) in 1952.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Billings Intl AP, at 1969 and 2008. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1969 ran 0.3 C (0.5 F) lower than in the years before (possible change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2008 ran 0.4 C (0.6 F) higher than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1969 | -0.3 | -0.5 | possible | 5 |
| 2008 | +0.4 | +0.6 | 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.
Climate Twins
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Billings Intl AP had a mean temperature of 9.3 C (48.7 F) and 385.8 mm (15.2 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Akron 4 E (United States, 767 km away), Leroy 5 WSW (United States, 741 km away) and Glenrock 5 ESE (United States, 397 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Akron 4 E | United States | 767 km (477 mi) | 9.3 C (48.7 F) | 403.0 mm (15.9 in) | 0.91 |
| Leroy 5 WSW | United States | 741 km (460 mi) | 9.2 C (48.5 F) | 433.0 mm (17.0 in) | 0.99 |
| Glenrock 5 ESE | United States | 397 km (247 mi) | 8.9 C (47.9 F) | 324.4 mm (12.8 in) | 1.08 |
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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-17).