Alta Lufthavn Weather Records (NOE00133110)
Record envelope, standing records and threshold days for Alta Lufthavn (NOE00133110), Norway, with 64 years of record.
Key Facts for Alta Lufthavn
- Alta Lufthavn (NOE00133110) is a weather station in Norway at 69.98 latitude and 23.36 longitude, 3 m (10 ft) above sea level.
- The station reports from 1963 to 2026, 64 years of record.
- 1,464 records set at Alta Lufthavn still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Alta Lufthavn set a daily record high minimum temperature of 15.0 C (59.0 F) on 30 August 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Norway, 69.98 latitude, 23.36 longitude.
- Elevation: 3 m (10 ft).
- Period of record: 1963 to 2026, 64 years.
- Eligible elements: tmax, tmin, prcp.
Daily Record Envelope and 2026
8 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 9.9 C (49.8 F) | -32.1 C (-25.8 F) | 1.1 C (34.0 F) | -23.4 C (-10.1 F) |
| Feb | 10.7 C (51.3 F) | -30.3 C (-22.5 F) | 5.0 C (41.0 F) | -23.9 C (-11.0 F) |
| Mar | 10.8 C (51.4 F) | -25.5 C (-13.9 F) | 8.4 C (47.1 F) | -11.3 C (11.7 F) |
| Apr | 15.6 C (60.1 F) | -21.5 C (-6.7 F) | 14.2 C (57.6 F) | -6.6 C (20.1 F) |
| May | 28.0 C (82.4 F) | -11.4 C (11.5 F) | 16.5 C (61.7 F) | -2.6 C (27.3 F) |
| Jun | 31.9 C (89.4 F) | -0.1 C (31.8 F) | 27.6 C (81.7 F) | 6.4 C (43.5 F) |
| Jul | 33.0 C (91.4 F) | 3.7 C (38.7 F) | 22.1 C (71.8 F) | 4.9 C (40.8 F) |
| Aug | 31.8 C (89.2 F) | -0.2 C (31.6 F) | 20.0 C (68.0 F) | 2.4 C (36.3 F) |
| Sep | 24.4 C (75.9 F) | -7.4 C (18.7 F) | n/a | n/a |
| Oct | 17.4 C (63.3 F) | -19.4 C (-2.9 F) | n/a | n/a |
| Nov | 14.7 C (58.5 F) | -25.8 C (-14.4 F) | n/a | n/a |
| Dec | 10.8 C (51.4 F) | -27.7 C (-17.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1963 | 4 |
| 1964 | 27 |
| 1965 | 43 |
| 1966 | 65 |
| 1967 | 13 |
| 1968 | 61 |
| 1969 | 6 |
| 1970 | 24 |
| 1971 | 36 |
| 1972 | 36 |
| 1973 | 36 |
| 1974 | 27 |
| 1975 | 38 |
| 1976 | 19 |
| 1977 | 33 |
| 1978 | 31 |
| 1979 | 23 |
| 1980 | 19 |
| 1981 | 28 |
| 1982 | 26 |
| 1983 | 18 |
| 1984 | 27 |
| 1985 | 29 |
| 1986 | 32 |
| 1987 | 48 |
| 1988 | 12 |
| 1989 | 25 |
| 1990 | 14 |
| 1991 | 14 |
| 1992 | 42 |
| 1993 | 14 |
| 1994 | 10 |
| 1995 | 13 |
| 1996 | 11 |
| 1997 | 13 |
| 1998 | 27 |
| 1999 | 23 |
| 2000 | 23 |
| 2001 | 27 |
| 2002 | 9 |
| 2003 | 22 |
| 2004 | 19 |
| 2005 | 13 |
| 2006 | 30 |
| 2007 | 25 |
| 2008 | 17 |
| 2009 | 12 |
| 2010 | 24 |
| 2011 | 11 |
| 2012 | 7 |
| 2013 | 19 |
| 2014 | 11 |
| 2015 | 9 |
| 2016 | 21 |
| 2017 | 11 |
| 2018 | 35 |
| 2019 | 15 |
| 2020 | 8 |
| 2021 | 12 |
| 2022 | 24 |
| 2023 | 15 |
| 2024 | 41 |
| 2025 | 22 |
| 2026 | 15 |
All-Time Record Progression
5 new records| Date | Kind | Detail |
|---|---|---|
| 1999-01-28 | Record low maximum temperature | Record low maximum temperature -29.5 C (-21.1 F) |
| 1999-01-28 | Record low minimum temperature | Record low minimum temperature -32.1 C (-25.8 F) |
| 2001-07-11 | Record daily precipitation | Record daily precipitation 66.3 mm (2.6 in) |
| 2018-07-18 | Record high maximum temperature | Record high maximum temperature 33.0 C (91.4 F) |
| 2018-07-30 | Record high minimum temperature | Record high minimum temperature 21.4 C (70.5 F) |
Wettest Day of Each Month
Jul: 66.3 mm (2.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 20.8 mm (0.8 in) | 24 January 1991 |
| Feb | 12.9 mm (0.5 in) | 15 February 1983 |
| Mar | 23.0 mm (0.9 in) | 8 March 1971 |
| Apr | 18.1 mm (0.7 in) | 28 April 2022 |
| May | 21.7 mm (0.9 in) | 3 May 2009 |
| Jun | 34.9 mm (1.4 in) | 12 June 2021 |
| Jul | 66.3 mm (2.6 in) | 11 July 2001 |
| Aug | 33.8 mm (1.3 in) | 18 August 1973 |
| Sep | 31.4 mm (1.2 in) | 18 September 2012 |
| Oct | 23.0 mm (0.9 in) | 14 October 1993 |
| Nov | 16.0 mm (0.6 in) | 7 November 1995 |
| Dec | 19.6 mm (0.8 in) | 29 December 1989 |
Period of Record Coverage
1963 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1963 | 31 | 8% | No |
| 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 | 362 | 99% | 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 | 352 | 96% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 362 | 99% | Yes |
| 2021 | 361 | 99% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 364 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 239 | 65% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 30 August 2026 | Alta Lufthavn, NO | daily high min (Provisional) | 15.0 C (59.0 F) | 1.0 C (1.8 F) | 60 years | 27 of 100 (Routine) |
| 20 July 2026 | Alta Lufthavn, NO | daily low min | 4.9 C (40.8 F) | 0.3 C (0.5 F) | 57 years | 24 of 100 (Routine) |
| 8 July 2026 | Alta Lufthavn, NO | daily rain | 42.5 mm (1.7 in) | 27.9 mm (1.1 in) | 60 years | 64 of 100 (Major) |
| 29 June 2026 | Alta Lufthavn, NO | daily rain | 25.2 mm (1.0 in) | 11.7 mm (0.5 in) | 44 years | 46 of 100 (Notable) |
| 21 June 2026 | Alta Lufthavn, NO | daily rain | 17.6 mm (0.7 in) | 2.3 mm (0.09 in) | 17 years | 16 of 100 (Routine) |
| 10 June 2026 | Alta Lufthavn, NO | daily high min | 13.8 C (56.8 F) | 0.4 C (0.7 F) | 15 years | 11 of 100 (Routine) |
| 8 June 2026 | Alta Lufthavn, NO | daily high min | 14.9 C (58.8 F) | 2.8 C (5.0 F) | 24 years | 21 of 100 (Routine) |
| 6 June 2026 | Alta Lufthavn, NO | daily high min | 15.4 C (59.7 F) | 0.5 C (0.9 F) | 1 year | 7 of 100 (Routine) |
| 5 June 2026 | Alta Lufthavn, NO | daily high min | 12.2 C (54.0 F) | 0.2 C (0.4 F) | 40 years | 18 of 100 (Routine) |
| 5 June 2026 | Alta Lufthavn, NO | daily high max | 27.6 C (81.7 F) | 1.2 C (2.2 F) | 12 years | 11 of 100 (Routine) |
| 16 May 2026 | Alta Lufthavn, NO | daily high min | 7.4 C (45.3 F) | 0.2 C (0.4 F) | 16 years | 10 of 100 (Routine) |
| 1 May 2026 | Alta Lufthavn, NO | daily high min | 5.0 C (41.0 F) | 0.1 C (0.2 F) | 9 years | 8 of 100 (Routine) |
| 15 April 2026 | Alta Lufthavn, NO | daily high max | 10.9 C (51.6 F) | 0.3 C (0.5 F) | 19 years | 11 of 100 (Routine) |
| 14 April 2026 | Alta Lufthavn, NO | daily high max | 9.2 C (48.6 F) | 0.5 C (0.9 F) | 36 years | 18 of 100 (Routine) |
| 13 April 2026 | Alta Lufthavn, NO | daily high max | 11.3 C (52.3 F) | 1.6 C (2.9 F) | 1 year | 10 of 100 (Routine) |
| 10 April 2026 | Alta Lufthavn, NO | daily high min | 2.0 C (35.6 F) | 0.5 C (0.9 F) | 49 years | 21 of 100 (Routine) |
| 31 March 2026 | Alta Lufthavn, NO | daily high max (Tie) | 8.4 C (47.1 F) | tie | 52 years | 5 of 100 (Routine) |
| 23 March 2026 | Alta Lufthavn, NO | daily high min | 3.2 C (37.8 F) | 0.5 C (0.9 F) | 52 years | 21 of 100 (Routine) |
| 6 March 2026 | Alta Lufthavn, NO | daily high max | 6.7 C (44.1 F) | 0.4 C (0.7 F) | 33 years | 16 of 100 (Routine) |
| 12 January 2026 | Alta Lufthavn, NO | daily low min | -23.4 C (-10.1 F) | 0.4 C (0.7 F) | 58 years | 23 of 100 (Routine) |
Climate Trend
61 complete years, 1964 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1964 | 2.3 C | +0.28 C |
| 1965 | 0.1 C | -1.87 C |
| 1966 | -0.6 C | -2.60 C |
| 1967 | 1.8 C | -0.18 C |
| 1968 | -0.1 C | -2.06 C |
| 1969 | 1.0 C | -1.04 C |
| 1970 | 1.4 C | -0.59 C |
| 1971 | 0.4 C | -1.64 C |
| 1972 | 3.3 C | +1.30 C |
| 1973 | 1.3 C | -0.70 C |
| 1974 | 3.2 C | +1.16 C |
| 1975 | 2.1 C | +0.10 C |
| 1976 | 1.0 C | -1.02 C |
| 1977 | 0.9 C | -1.11 C |
| 1978 | 0.5 C | -1.47 C |
| 1979 | 1.4 C | -0.60 C |
| 1980 | 1.1 C | -0.88 C |
| 1981 | -0.1 C | -2.11 C |
| 1982 | 1.6 C | -0.41 C |
| 1983 | 1.6 C | -0.44 C |
| 1984 | 2.3 C | +0.31 C |
| 1985 | 0.2 C | -1.78 C |
| 1986 | 1.4 C | -0.58 C |
| 1987 | 0.1 C | -1.86 C |
| 1988 | 0.9 C | -1.08 C |
| 1989 | 3.0 C | +1.04 C |
| 1990 | 3.2 C | +1.16 C |
| 1991 | 2.5 C | +0.48 C |
| 1992 | 2.5 C | +0.53 C |
| 1993 | 2.1 C | +0.12 C |
| 1994 | 2.0 C | +0.03 C |
| 1995 | 1.7 C | -0.31 C |
| 1996 | 1.9 C | -0.14 C |
| 1997 | 2.3 C | +0.28 C |
| 1998 | 0.8 C | -1.18 C |
| 1999 | 1.9 C | -0.08 C |
| 2000 | 2.8 C | +0.83 C |
| 2001 | 2.1 C | +0.10 C |
| 2002 | 2.4 C | +0.37 C |
| 2003 | 2.9 C | +0.92 C |
| 2004 | 3.2 C | +1.24 C |
| 2005 | 3.1 C | +1.08 C |
| 2006 | 3.0 C | +0.96 C |
| 2007 | 3.0 C | +1.02 C |
| 2008 | 2.3 C | +0.32 C |
| 2009 | 2.6 C | +0.57 C |
| 2010 | 1.3 C | -0.71 C |
| 2011 | 3.5 C | +1.54 C |
| 2012 | 1.8 C | -0.16 C |
| 2013 | 3.2 C | +1.17 C |
| 2014 | 2.8 C | +0.82 C |
| 2015 | 3.3 C | +1.32 C |
| 2016 | 3.2 C | +1.16 C |
| 2017 | 2.1 C | +0.12 C |
| 2019 | 2.0 C | -0.01 C |
| 2020 | 3.5 C | +1.50 C |
| 2021 | 1.7 C | -0.34 C |
| 2022 | 2.7 C | +0.68 C |
| 2023 | 2.6 C | +0.64 C |
| 2024 | 3.9 C | +1.91 C |
| 2025 | 3.6 C | +1.59 C |
The annual mean temperature here has risen by 0.4 C (0.2 to 0.5) per decade over 1964 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 | 1964 to 2025 | 61 | Rise |
| Mean daily maximum | 0.4 C (0.2 to 0.5) per decade | 0.6 F (0.4 to 0.9) per decade | 1964 to 2025 | 61 | Rise |
| Mean daily minimum | 0.4 C (0.2 to 0.5) per decade | 0.7 F (0.4 to 0.9) per decade | 1964 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
1963 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 33.0 C (91.4 F) | 2018 | 27.3 C (81.1 F) | 64 |
| Coldest night (TNn) | -32.1 C (-25.8 F) | 1999 | -23.9 C (-11.1 F) | 64 |
| Wettest day (Rx1day) | 66.3 mm (2.6 in) | 2001 | 21.0 mm (0.8 in) | 64 |
| Wettest five days (Rx5day) | 71.9 mm (2.8 in) | 2001 | 39.4 mm (1.6 in) | 63 |
| Longest dry spell (CDD) | 51 days | 1972 | 25 days | 63 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1963 | 6.6 C (43.9 F) |
| 1964 | 26.8 C (80.2 F) |
| 1965 | 21.3 C (70.3 F) |
| 1966 | 29.4 C (84.9 F) |
| 1967 | 28.4 C (83.1 F) |
| 1968 | 27.0 C (80.6 F) |
| 1969 | 23.3 C (73.9 F) |
| 1970 | 29.6 C (85.3 F) |
| 1971 | 26.0 C (78.8 F) |
| 1972 | 32.5 C (90.5 F) |
| 1973 | 31.8 C (89.2 F) |
| 1974 | 30.8 C (87.4 F) |
| 1975 | 28.8 C (83.8 F) |
| 1976 | 25.9 C (78.6 F) |
| 1977 | 24.8 C (76.6 F) |
| 1978 | 26.9 C (80.4 F) |
| 1979 | 27.8 C (82.0 F) |
| 1980 | 26.2 C (79.2 F) |
| 1981 | 28.6 C (83.5 F) |
| 1982 | 29.4 C (84.9 F) |
| 1983 | 26.5 C (79.7 F) |
| 1984 | 27.0 C (80.6 F) |
| 1985 | 28.3 C (82.9 F) |
| 1986 | 27.6 C (81.7 F) |
| 1987 | 28.4 C (83.1 F) |
| 1988 | 32.4 C (90.3 F) |
| 1989 | 29.9 C (85.8 F) |
| 1990 | 26.8 C (80.2 F) |
| 1991 | 24.4 C (75.9 F) |
| 1992 | 28.4 C (83.1 F) |
| 1993 | 29.1 C (84.4 F) |
| 1994 | 28.3 C (82.9 F) |
| 1995 | 23.7 C (74.7 F) |
| 1996 | 24.6 C (76.3 F) |
| 1997 | 27.3 C (81.1 F) |
| 1998 | 23.8 C (74.8 F) |
| 1999 | 30.8 C (87.4 F) |
| 2000 | 27.2 C (81.0 F) |
| 2001 | 26.0 C (78.8 F) |
| 2002 | 24.8 C (76.6 F) |
| 2003 | 27.1 C (80.8 F) |
| 2004 | 28.4 C (83.1 F) |
| 2005 | 24.8 C (76.6 F) |
| 2006 | 24.6 C (76.3 F) |
| 2007 | 25.0 C (77.0 F) |
| 2008 | 24.6 C (76.3 F) |
| 2009 | 26.8 C (80.2 F) |
| 2010 | 26.2 C (79.2 F) |
| 2011 | 31.1 C (88.0 F) |
| 2012 | 22.6 C (72.7 F) |
| 2013 | 27.1 C (80.8 F) |
| 2014 | 27.3 C (81.1 F) |
| 2015 | 23.1 C (73.6 F) |
| 2016 | 28.3 C (82.9 F) |
| 2017 | 25.2 C (77.4 F) |
| 2018 | 33.0 C (91.4 F) |
| 2019 | 29.3 C (84.7 F) |
| 2020 | 25.4 C (77.7 F) |
| 2021 | 30.5 C (86.9 F) |
| 2022 | 31.9 C (89.4 F) |
| 2023 | 29.8 C (85.6 F) |
| 2024 | 30.0 C (86.0 F) |
| 2025 | 28.3 C (82.9 F) |
| 2026 | 27.6 C (81.7 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1963 | -25.4 C (-13.7 F) |
| 1964 | -22.4 C (-8.3 F) |
| 1965 | -24.6 C (-12.3 F) |
| 1966 | -30.3 C (-22.5 F) |
| 1967 | -27.5 C (-17.5 F) |
| 1968 | -25.5 C (-13.9 F) |
| 1969 | -22.0 C (-7.6 F) |
| 1970 | -27.5 C (-17.5 F) |
| 1971 | -29.4 C (-20.9 F) |
| 1972 | -18.0 C (-0.4 F) |
| 1973 | -23.0 C (-9.4 F) |
| 1974 | -22.6 C (-8.7 F) |
| 1975 | -22.6 C (-8.7 F) |
| 1976 | -26.7 C (-16.1 F) |
| 1977 | -29.4 C (-20.9 F) |
| 1978 | -27.7 C (-17.9 F) |
| 1979 | -26.7 C (-16.1 F) |
| 1980 | -26.2 C (-15.2 F) |
| 1981 | -28.3 C (-18.9 F) |
| 1982 | -26.6 C (-15.9 F) |
| 1983 | -27.8 C (-18.0 F) |
| 1984 | -21.0 C (-5.8 F) |
| 1985 | -27.1 C (-16.8 F) |
| 1986 | -28.8 C (-19.8 F) |
| 1987 | -30.3 C (-22.5 F) |
| 1988 | -22.5 C (-8.5 F) |
| 1989 | -24.0 C (-11.2 F) |
| 1990 | -21.4 C (-6.5 F) |
| 1991 | -21.5 C (-6.7 F) |
| 1992 | -22.0 C (-7.6 F) |
| 1993 | -21.5 C (-6.7 F) |
| 1994 | -25.5 C (-13.9 F) |
| 1995 | -24.3 C (-11.7 F) |
| 1996 | -23.8 C (-10.8 F) |
| 1997 | -22.5 C (-8.5 F) |
| 1998 | -28.7 C (-19.7 F) |
| 1999 | -32.1 C (-25.8 F) |
| 2000 | -22.4 C (-8.3 F) |
| 2001 | -21.8 C (-7.2 F) |
| 2002 | -23.6 C (-10.5 F) |
| 2003 | -23.1 C (-9.6 F) |
| 2004 | -20.1 C (-4.2 F) |
| 2005 | -18.2 C (-0.8 F) |
| 2006 | -22.3 C (-8.1 F) |
| 2007 | -24.1 C (-11.4 F) |
| 2008 | -17.3 C (0.9 F) |
| 2009 | -22.9 C (-9.2 F) |
| 2010 | -26.4 C (-15.5 F) |
| 2011 | -25.0 C (-13.0 F) |
| 2012 | -27.6 C (-17.7 F) |
| 2013 | -24.8 C (-12.6 F) |
| 2014 | -23.2 C (-9.8 F) |
| 2015 | -22.1 C (-7.8 F) |
| 2016 | -26.2 C (-15.2 F) |
| 2017 | -24.1 C (-11.4 F) |
| 2018 | -21.8 C (-7.2 F) |
| 2019 | -24.4 C (-11.9 F) |
| 2020 | -20.9 C (-5.6 F) |
| 2021 | -20.5 C (-4.9 F) |
| 2022 | -21.2 C (-6.2 F) |
| 2023 | -22.2 C (-8.0 F) |
| 2024 | -25.8 C (-14.4 F) |
| 2025 | -22.9 C (-9.2 F) |
| 2026 | -23.9 C (-11.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1963 | 12.0 mm (0.5 in) |
| 1964 | 30.2 mm (1.2 in) |
| 1965 | 18.1 mm (0.7 in) |
| 1966 | 19.0 mm (0.7 in) |
| 1967 | 26.8 mm (1.1 in) |
| 1968 | 14.3 mm (0.6 in) |
| 1969 | 20.7 mm (0.8 in) |
| 1970 | 23.7 mm (0.9 in) |
| 1971 | 23.0 mm (0.9 in) |
| 1972 | 24.6 mm (1.0 in) |
| 1973 | 33.8 mm (1.3 in) |
| 1974 | 28.4 mm (1.1 in) |
| 1975 | 16.5 mm (0.6 in) |
| 1976 | 15.2 mm (0.6 in) |
| 1977 | 15.0 mm (0.6 in) |
| 1978 | 22.2 mm (0.9 in) |
| 1979 | 17.0 mm (0.7 in) |
| 1980 | 13.5 mm (0.5 in) |
| 1981 | 30.5 mm (1.2 in) |
| 1982 | 24.7 mm (1.0 in) |
| 1983 | 15.7 mm (0.6 in) |
| 1984 | 27.1 mm (1.1 in) |
| 1985 | 22.5 mm (0.9 in) |
| 1986 | 14.6 mm (0.6 in) |
| 1987 | 16.8 mm (0.7 in) |
| 1988 | 19.1 mm (0.8 in) |
| 1989 | 25.1 mm (1.0 in) |
| 1990 | 15.8 mm (0.6 in) |
| 1991 | 23.4 mm (0.9 in) |
| 1992 | 22.3 mm (0.9 in) |
| 1993 | 23.0 mm (0.9 in) |
| 1994 | 16.1 mm (0.6 in) |
| 1995 | 16.0 mm (0.6 in) |
| 1996 | 15.8 mm (0.6 in) |
| 1997 | 14.0 mm (0.6 in) |
| 1998 | 22.3 mm (0.9 in) |
| 1999 | 25.6 mm (1.0 in) |
| 2000 | 18.9 mm (0.7 in) |
| 2001 | 66.3 mm (2.6 in) |
| 2002 | 30.1 mm (1.2 in) |
| 2003 | 14.3 mm (0.6 in) |
| 2004 | 17.0 mm (0.7 in) |
| 2005 | 16.7 mm (0.7 in) |
| 2006 | 34.2 mm (1.3 in) |
| 2007 | 20.1 mm (0.8 in) |
| 2008 | 37.0 mm (1.5 in) |
| 2009 | 23.1 mm (0.9 in) |
| 2010 | 7.3 mm (0.29 in) |
| 2011 | 18.7 mm (0.7 in) |
| 2012 | 31.4 mm (1.2 in) |
| 2013 | 22.8 mm (0.9 in) |
| 2014 | 17.1 mm (0.7 in) |
| 2015 | 7.0 mm (0.28 in) |
| 2016 | 21.3 mm (0.8 in) |
| 2017 | 13.3 mm (0.5 in) |
| 2018 | 13.6 mm (0.5 in) |
| 2019 | 17.5 mm (0.7 in) |
| 2020 | 15.0 mm (0.6 in) |
| 2021 | 34.9 mm (1.4 in) |
| 2022 | 25.3 mm (1.0 in) |
| 2023 | 24.5 mm (1.0 in) |
| 2024 | 22.4 mm (0.9 in) |
| 2025 | 21.9 mm (0.9 in) |
| 2026 | 42.5 mm (1.7 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1963 | 22.5 mm (0.9 in) |
| 1964 | 42.6 mm (1.7 in) |
| 1965 | 36.1 mm (1.4 in) |
| 1966 | 31.1 mm (1.2 in) |
| 1967 | 48.7 mm (1.9 in) |
| 1968 | 30.7 mm (1.2 in) |
| 1969 | 39.4 mm (1.6 in) |
| 1970 | 39.4 mm (1.6 in) |
| 1971 | 52.0 mm (2.0 in) |
| 1972 | 43.5 mm (1.7 in) |
| 1973 | 43.7 mm (1.7 in) |
| 1974 | 61.6 mm (2.4 in) |
| 1975 | 32.2 mm (1.3 in) |
| 1976 | 27.0 mm (1.1 in) |
| 1977 | 23.0 mm (0.9 in) |
| 1978 | 42.7 mm (1.7 in) |
| 1979 | 42.0 mm (1.7 in) |
| 1980 | 30.9 mm (1.2 in) |
| 1981 | 48.4 mm (1.9 in) |
| 1982 | 38.0 mm (1.5 in) |
| 1983 | 31.3 mm (1.2 in) |
| 1984 | 43.9 mm (1.7 in) |
| 1985 | 30.8 mm (1.2 in) |
| 1986 | 39.6 mm (1.6 in) |
| 1987 | 36.9 mm (1.5 in) |
| 1988 | 34.3 mm (1.4 in) |
| 1989 | 58.8 mm (2.3 in) |
| 1990 | 29.6 mm (1.2 in) |
| 1991 | 55.6 mm (2.2 in) |
| 1992 | 33.0 mm (1.3 in) |
| 1993 | 42.0 mm (1.7 in) |
| 1994 | 20.2 mm (0.8 in) |
| 1995 | 32.5 mm (1.3 in) |
| 1996 | 26.2 mm (1.0 in) |
| 1997 | 29.0 mm (1.1 in) |
| 1998 | 37.7 mm (1.5 in) |
| 1999 | 53.2 mm (2.1 in) |
| 2000 | 41.6 mm (1.6 in) |
| 2001 | 71.9 mm (2.8 in) |
| 2002 | 61.7 mm (2.4 in) |
| 2003 | 30.7 mm (1.2 in) |
| 2004 | 25.6 mm (1.0 in) |
| 2005 | 41.6 mm (1.6 in) |
| 2006 | 70.1 mm (2.8 in) |
| 2007 | 41.9 mm (1.6 in) |
| 2008 | 45.8 mm (1.8 in) |
| 2009 | 43.8 mm (1.7 in) |
| 2010 | n/a |
| 2011 | 31.6 mm (1.2 in) |
| 2012 | 47.9 mm (1.9 in) |
| 2013 | 32.3 mm (1.3 in) |
| 2014 | 42.9 mm (1.7 in) |
| 2015 | 18.6 mm (0.7 in) |
| 2016 | 29.7 mm (1.2 in) |
| 2017 | 21.6 mm (0.9 in) |
| 2018 | 28.0 mm (1.1 in) |
| 2019 | 44.1 mm (1.7 in) |
| 2020 | 48.1 mm (1.9 in) |
| 2021 | 49.9 mm (2.0 in) |
| 2022 | 67.4 mm (2.7 in) |
| 2023 | 37.8 mm (1.5 in) |
| 2024 | 46.6 mm (1.8 in) |
| 2025 | 35.9 mm (1.4 in) |
| 2026 | 60.4 mm (2.4 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1963 | 7 days |
| 1964 | 35 days |
| 1965 | 25 days |
| 1966 | 43 days |
| 1967 | 25 days |
| 1968 | 23 days |
| 1969 | 42 days |
| 1970 | 34 days |
| 1971 | 30 days |
| 1972 | 51 days |
| 1973 | 23 days |
| 1974 | 44 days |
| 1975 | 17 days |
| 1976 | 32 days |
| 1977 | 27 days |
| 1978 | 23 days |
| 1979 | 26 days |
| 1980 | 32 days |
| 1981 | 20 days |
| 1982 | 23 days |
| 1983 | 26 days |
| 1984 | 28 days |
| 1985 | 20 days |
| 1986 | 30 days |
| 1987 | 26 days |
| 1988 | 25 days |
| 1989 | 26 days |
| 1990 | 24 days |
| 1991 | 23 days |
| 1992 | 22 days |
| 1993 | 30 days |
| 1994 | 38 days |
| 1995 | 24 days |
| 1996 | 21 days |
| 1997 | 29 days |
| 1998 | 19 days |
| 1999 | 39 days |
| 2000 | 49 days |
| 2001 | 20 days |
| 2002 | 33 days |
| 2003 | 20 days |
| 2004 | 36 days |
| 2005 | 12 days |
| 2006 | 20 days |
| 2007 | 20 days |
| 2008 | 37 days |
| 2009 | 25 days |
| 2010 | n/a |
| 2011 | 15 days |
| 2012 | 33 days |
| 2013 | 19 days |
| 2014 | 43 days |
| 2015 | 17 days |
| 2016 | 17 days |
| 2017 | 19 days |
| 2018 | 22 days |
| 2019 | 25 days |
| 2020 | 29 days |
| 2021 | 26 days |
| 2022 | 21 days |
| 2023 | 28 days |
| 2024 | 23 days |
| 2025 | 27 days |
| 2026 | 24 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 Alta Lufthavn falls on 19 May and the median first autumn frost on 23 September, which leaves a median of 129 days between them.
In 1995 to 2025 the median growing season was 137 days. That is 15 days more than in 1964 to 1993.
Fitted over all years, the growing season changes by +2.1 days per decade at this station.
| Measure | Median, all years | Earliest period (1964 to 1993) | Recent period (1995 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 19 May | 21 May | 18 May | 3 days earlier | 0.0 days per decade |
| First autumn frost | 23 September | 18 September | 30 September | 12 days later | +2.1 days per decade |
| Growing days | 129 days | 122 days | 137 days | 15 days more | +2.1 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
57 years, 1964 to 2025A day with at least 20.0 mm (0.8 in) of rain is expected about once in 2 years. A day with at least 52.2 mm (2.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 20.0 mm (0.8 in) | |
| 5 years | 26.4 mm (1.0 in) | |
| 10 years | 31.4 mm (1.2 in) | |
| 25 years | 38.8 mm (1.5 in) | |
| 50 years | 45.1 mm (1.8 in) | |
| 100 years | 52.2 mm (2.1 in) | Longer than the 57 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, 57 years of values from 1964 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: 66.3 mm (2.6 in) in 2001; 37.0 mm (1.5 in) in 2008; 34.2 mm (1.3 in) in 2006.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Alta Lufthavn, at 2011. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2011 ran 0.3 C (0.5 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2011 | -0.3 | -0.5 | 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.
Climate Twins
2010 to 2025 against 1961 to 1990Over 2010 to 2025, Alta Lufthavn had a mean temperature of 2.7 C (36.9 F) and 460.8 mm (18.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Cabin Creek (United States, 7,151 km away), Ruxton Park (United States, 7,219 km away) and Spicer (United States, 7,083 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Cabin Creek | United States | 7,151 km (4,443 mi) | 2.5 C (36.6 F) | 466.3 mm (18.4 in) | 0.72 |
| Ruxton Park | United States | 7,219 km (4,486 mi) | 2.5 C (36.4 F) | 600.6 mm (23.6 in) | 0.91 |
| Spicer | United States | 7,083 km (4,401 mi) | 2.3 C (36.2 F) | 359.8 mm (14.2 in) | 0.95 |
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).