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Built 2026-10-19 (19 October 2026)

Alta Lufthavn Threshold Days by Year (NOE00133110)

11 fixed thresholds counted per year at Alta Lufthavn (NOE00133110): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Alta Lufthavn Thresholds

  • Alta Lufthavn: days with a maximum temperature at or below 0 C (32 F) in 63 years, most in 1981 with 142.
  • Alta Lufthavn: nights with a minimum temperature at or below 0 C (32 F) in 63 years, most in 1968 with 222.
  • Alta Lufthavn: nights with a minimum temperature at or below -10 C (14 F) in 63 years, most in 1981 with 111.
  • Alta Lufthavn: nights with a minimum temperature at or below -20 C (-4 F) in 60 years, most in 1985 with 35.
  • 11 fixed thresholds have at least one qualifying day at Alta Lufthavn.
10 years with a qualifying day
Days at or above 30 C (86 F) per year at Alta Lufthavn Days per year at Alta Lufthavn with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 4 in 2018. 012341972: 21973: 11974: 21988: 11999: 22011: 12018: 42021: 12022: 32024: 11972197319741988199920112018202120222024
Days per year at Alta Lufthavn with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 4 in 2018.
Days at or above 30 C (86 F) per year at Alta Lufthavn
YearDaysDecade average
197221.7
197311.7
197421.7
198811
199922
201112.5
201842.5
202111.7
202231.7
202411.7
First to last qualifying date each year at Alta Lufthavn For each year, a bar from the first to the last day at Alta Lufthavn meeting 30 C (86 F). 1972: 1 July 1972 to 3 July 19721973: 8 July 1973 to 8 July 19731974: 18 June 1974 to 19 June 19741988: 20 July 1988 to 20 July 19881999: 15 July 1999 to 17 July 19992011: 9 July 2011 to 9 July 20112018: 18 July 2018 to 1 August 20182021: 7 July 2021 to 7 July 20212022: 28 June 2022 to 2 July 20222024: 23 July 2024 to 23 July 202419721974199920182022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Alta Lufthavn meeting 30 C (86 F).
First to last qualifying date each year at Alta Lufthavn
YearFirst dateLast date
19721972-07-011972-07-03
19731973-07-081973-07-08
19741974-06-181974-06-19
19881988-07-201988-07-20
19991999-07-151999-07-17
20112011-07-092011-07-09
20182018-07-182018-08-01
20212021-07-072021-07-07
20222022-06-282022-07-02
20242024-07-232024-07-23

Every Fixed Threshold

Fixed thresholds at Alta Lufthavn
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days10420181
90 F (32.2 C): Days3119721
0 C (32 F): Ice days (max63142198155
0 C (32 F): Frost days (min632221968104
-10 C (14 F): Days with min63111198147
-20 C (-4 F): Days with min6035198520
-30 C (-22 F): Days with min3319993
20 C (68 F): Tropical nights (min4519721
10 mm (0.39 in): Days with 10 mm or more rain581420225
25 mm (0.98 in): Days with 25 mm or more rain15220062
50 mm (1.97 in): Days with 50 mm or more rain1120011

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1972.

Download the Data

  • Data for Alta Lufthavn threshold days by year: CSV or JSON. Field meanings are on the data page.

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). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).