Key Facts

From 1951 to 2025, long-record stations in Norway warmed by +0.30 C per decade (+0.53 F) (95 percent interval +0.20 to +0.40 C), from 55 stations measured against each station's own 1961-1990 mean.
The latest year in the series for Norway, 2025, was +2.51 C against the 1961-1990 mean.
In Norway the daily minimum rose faster than the daily maximum, by 0.02 C per decade (the two intervals overlap).
Of 64 stations in Norway with at least 50 complete years of record, 17 had 2014 as their warmest year.
In Norway, the mean annual temperature of 51 stations changed by +1.63 C between the 1961-1990 and 2011-2025 periods.

Warming

Norway, against 1961-1990

Annual mean temperature of the long-record stations in Norway as a difference from each station's own 1961-1990 mean, 1951 to 2025. 55 stations in 14 grid cells of 5 by 5 degrees, area weighted. Years with too little coverage are left blank and the line or columns are not drawn across the gap; the earliest and latest years can rest on fewer of these stations than the middle years. The station set does not change from year to year. Zero line: each station's own 1961-1990 mean.

Annual mean temperature against the 1961-1990 mean, Norway
Year	Difference from the 1961-1990 mean
1951	-0.07 C
1952	-0.57 C
1953	+1.19 C
1954	+0.48 C
1955	-0.82 C
1956	-0.31 C
1957	+0.48 C
1958	-0.29 C
1959	+1.05 C
1960	+0.46 C
1961	+0.85 C
1962	-0.75 C
1963	-0.44 C
1964	+0.43 C
1965	-0.69 C
1966	-1.27 C
1967	+0.27 C
1968	-0.99 C
1969	-0.22 C
1970	-0.37 C
1971	-0.23 C
1972	+1.06 C
1973	+0.20 C
1974	+1.28 C
1975	+0.59 C
1976	+0.04 C
1977	-0.33 C
1978	-0.68 C
1979	-0.64 C
1980	-0.27 C
1981	-0.79 C
1982	+0.19 C
1983	+0.49 C
1984	+0.95 C
1985	-0.68 C
1986	-0.24 C
1987	-0.71 C
1988	+0.03 C
1989	+1.28 C
1990	+1.73 C
1991	+0.96 C
1992	+1.11 C
1993	+0.28 C
1994	+0.41 C
1995	+0.29 C
1996	+0.05 C
1997	+0.78 C
1998	+0.28 C
1999	+1.13 C
2000	+1.50 C
2001	+0.56 C
2002	+1.14 C
2003	+1.05 C
2004	+1.45 C
2005	+1.60 C
2006	+1.95 C
2007	+1.58 C
2008	+1.35 C
2009	+1.10 C
2010	-0.19 C
2011	+1.77 C
2012	+0.91 C
2013	+1.34 C
2014	+2.11 C
2015	+1.93 C
2016	+2.05 C
2017	+1.44 C
2018	+1.74 C
2019	+1.19 C
2020	+2.13 C
2021	+1.21 C
2022	+1.88 C
2023	+1.41 C
2024	+2.24 C
2025	+2.51 C

From 1951 to 2025, the long-record stations in Norway warmed by +0.30 C per decade (+0.53 F) (95 percent interval +0.20 to +0.40 C), from 55 stations in 14 grid cells of 5 by 5 degrees, each measured against its own 1961-1990 mean.

The latest year in the series, 2025, was +2.5 C (+4.5 F) against the 1961-1990 mean.

The five warmest years in the series are 2025 (+2.51 C), 2024 (+2.24 C), 2020 (+2.13 C), 2014 (+2.11 C) and 2016 (+2.05 C).

Trend

Warming trend per decade, Norway
Measure	Trend per decade (C)	95% interval (C)	Years	Stations
Annual mean temperature	+0.30	+0.20 to +0.40	1951 to 2025	55

Warmest and coolest years in the series

Warmest and coolest years of the 1961-1990 anomaly series, Norway
Rank	Warmest year	Difference from mean	Coolest year	Difference from mean
1	2025	+2.51 C	1966	-1.27 C
2	2024	+2.24 C	1968	-0.99 C
3	2020	+2.13 C	1955	-0.82 C
4	2014	+2.11 C	1981	-0.79 C
5	2016	+2.05 C	1962	-0.75 C

55 stations in 14 grid cells of 5 by 5 degrees. Each station is compared with its own 1961-1990 mean, so stations at different heights and latitudes can be averaged. Stations are averaged within each grid cell and cells are weighted by the cosine of latitude.

Warmest Years

Norway, 64 stations

For each year 1938 to 2025, the number of the 64 stations in Norway with at least 50 complete years of record that had it as their warmest year on record. A station counts once, so the bars add up to 64.

Stations that had each year as their warmest on record, Norway
Year	Stations with this as their warmest year
1938	0
1939	0
1940	0
1941	0
1942	0
1943	0
1944	0
1945	0
1946	0
1947	0
1948	0
1949	0
1950	0
1951	0
1952	0
1953	0
1954	0
1955	0
1956	0
1957	0
1958	0
1959	0
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	0
1967	0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	1
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	1
2001	0
2002	1
2003	0
2004	0
2005	1
2006	1
2007	0
2008	0
2009	0
2010	0
2011	2
2012	0
2013	0
2014	17
2015	0
2016	4
2017	0
2018	0
2019	0
2020	15
2021	0
2022	0
2023	0
2024	9
2025	12

Of the 64 stations in Norway with at least 50 complete years of record, 17 (26.6%) had 2014 as their warmest year on record.

The years that were the warmest on record at the most stations are 2014 (17 stations), 2020 (15 stations), 2025 (12 stations), 2024 (9 stations) and 2016 (4 stations).

36 of the 64 stations (56.3%) had their warmest year in the 2020s. That decade is not over.

By decade

Stations by the decade of their warmest year, Norway
Decade	Stations with their warmest year in it	Share of stations	Stations with one of their five warmest years in it
1930s	0	0.0%	1
1940s	0	0.0%	0
1950s	0	0.0%	2
1960s	0	0.0%	1
1970s	1	1.6%	5
1980s	0	0.0%	6
1990s	0	0.0%	20
2000s	4	6.3%	50
2010s	23	35.9%	96
2020s (to date)	36	56.3%	139

The set is the 64 stations with at least 50 complete years (all twelve months with 20 or more days of maximum and minimum). A station's warmest year is the one with the highest annual mean temperature, a tie going to the later year. The count describes these stations, not the whole area.

Days and Nights

Norway, against 1961-1990

Annual mean daily maximum, daily minimum and day-night range of the long-record stations in Norway as differences from each station's own 1961-1990 mean, 1951 to 2025. 55 stations in 14 grid cells of 5 by 5 degrees, area weighted. The station set does not change from year to year.

Daily maximum, daily minimum and day-night range against the 1961-1990 mean, Norway
Year	Daily maximum	Daily minimum	Day-night range (maximum minus minimum)
1951	-0.06 C	-0.08 C	+0.02 C
1952	-0.61 C	-0.53 C	-0.08 C
1953	+1.17 C	+1.20 C	-0.03 C
1954	+0.40 C	+0.57 C	-0.17 C
1955	-0.71 C	-0.92 C	+0.21 C
1956	-0.35 C	-0.28 C	-0.07 C
1957	+0.40 C	+0.56 C	-0.15 C
1958	-0.26 C	-0.32 C	+0.07 C
1959	+1.05 C	+1.04 C	+0.01 C
1960	+0.47 C	+0.46 C	+0.02 C
1961	+0.83 C	+0.87 C	-0.04 C
1962	-0.75 C	-0.75 C	-0.01 C
1963	-0.32 C	-0.56 C	+0.25 C
1964	+0.43 C	+0.43 C	0.00 C
1965	-0.74 C	-0.63 C	-0.11 C
1966	-1.25 C	-1.29 C	+0.04 C
1967	+0.24 C	+0.31 C	-0.07 C
1968	-0.92 C	-1.06 C	+0.14 C
1969	-0.09 C	-0.34 C	+0.26 C
1970	-0.26 C	-0.48 C	+0.21 C
1971	-0.18 C	-0.29 C	+0.11 C
1972	+1.00 C	+1.12 C	-0.11 C
1973	+0.23 C	+0.16 C	+0.07 C
1974	+1.24 C	+1.32 C	-0.08 C
1975	+0.64 C	+0.55 C	+0.09 C
1976	+0.14 C	-0.06 C	+0.20 C
1977	-0.37 C	-0.29 C	-0.08 C
1978	-0.61 C	-0.75 C	+0.14 C
1979	-0.71 C	-0.57 C	-0.14 C
1980	-0.22 C	-0.32 C	+0.10 C
1981	-0.78 C	-0.80 C	+0.01 C
1982	+0.13 C	+0.25 C	-0.12 C
1983	+0.41 C	+0.56 C	-0.15 C
1984	+0.76 C	+1.14 C	-0.38 C
1985	-0.70 C	-0.65 C	-0.05 C
1986	-0.23 C	-0.26 C	+0.04 C
1987	-0.81 C	-0.61 C	-0.19 C
1988	+0.06 C	-0.01 C	+0.07 C
1989	+1.25 C	+1.31 C	-0.06 C
1990	+1.63 C	+1.84 C	-0.22 C
1991	+0.87 C	+1.05 C	-0.18 C
1992	+1.05 C	+1.16 C	-0.11 C
1993	+0.24 C	+0.32 C	-0.07 C
1994	+0.42 C	+0.40 C	+0.01 C
1995	+0.19 C	+0.38 C	-0.19 C
1996	+0.03 C	+0.08 C	-0.04 C
1997	+0.79 C	+0.78 C	+0.01 C
1998	+0.10 C	+0.45 C	-0.35 C
1999	+1.00 C	+1.27 C	-0.27 C
2000	+1.29 C	+1.71 C	-0.42 C
2001	+0.49 C	+0.64 C	-0.15 C
2002	+1.09 C	+1.18 C	-0.10 C
2003	+1.10 C	+1.00 C	+0.10 C
2004	+1.44 C	+1.47 C	-0.03 C
2005	+1.51 C	+1.69 C	-0.18 C
2006	+1.87 C	+2.03 C	-0.17 C
2007	+1.47 C	+1.69 C	-0.23 C
2008	+1.28 C	+1.41 C	-0.12 C
2009	+0.98 C	+1.22 C	-0.24 C
2010	-0.22 C	-0.17 C	-0.05 C
2011	+1.66 C	+1.88 C	-0.22 C
2012	+0.68 C	+1.13 C	-0.44 C
2013	+1.44 C	+1.24 C	+0.20 C
2014	+2.02 C	+2.20 C	-0.18 C
2015	+1.78 C	+2.09 C	-0.32 C
2016	+1.93 C	+2.16 C	-0.23 C
2017	+1.33 C	+1.55 C	-0.21 C
2018	+1.83 C	+1.66 C	+0.17 C
2019	+1.17 C	+1.21 C	-0.04 C
2020	+2.10 C	+2.16 C	-0.06 C
2021	+1.18 C	+1.23 C	-0.05 C
2022	+1.91 C	+1.85 C	+0.06 C
2023	+1.45 C	+1.38 C	+0.06 C
2024	+2.30 C	+2.19 C	+0.10 C
2025	+2.51 C	+2.51 C	0.00 C

From 1951 to 2025, the daily maximum in Norway changed by +0.29 C per decade (+0.51 F) (95 percent interval +0.19 to +0.38 C) and the daily minimum by +0.31 C per decade (+0.55 F) (95 percent interval +0.21 to +0.41 C), from 55 stations.

The daily minimum rose faster, by 0.02 C per decade more than the daily maximum; the two intervals overlap, so the data do not separate them.

The day-night range (daily maximum minus daily minimum) changed by -0.02 C per decade (95 percent interval -0.04 to 0.00 C), which means the range narrowed.

Trends per decade

Trends in the daily maximum, the daily minimum and the day-night range, Norway
Measure	Trend per decade (C)	95% interval (C)	Years	Stations
Daily maximum	+0.29	+0.19 to +0.38	1951 to 2025	55
Daily minimum	+0.31	+0.21 to +0.41	1951 to 2025	55
Day-night range (maximum minus minimum)	-0.02	-0.04 to 0.00	1951 to 2025	55

The day-night range is the daily maximum minus the daily minimum, so a falling range means the minimum rose by more than the maximum. Intervals allow for year to year persistence in the series.

Hot Days, Warm Nights and Frost Days by Decade: Norway

Up to 42 stations per measure, fixed sets

In Norway, the mean number of days with a daily maximum at or above 30 C (86 F) per year at 42 stations rose from 0.1 to 0.4 between the 1960s and the 2010s; the 2020s so far (6 years) average 0.4.
In Norway, the mean number of days with a daily maximum at or above 35 C (95 F) per year at 42 stations was 0.0 in both between the 1960s and the 2010s; the 2020s so far (6 years) average 0.0.
In Norway, the mean number of days with a daily maximum at or above 40 C (104 F) per year at 42 stations was 0.0 in both between the 1960s and the 2010s; the 2020s so far (6 years) average 0.0.
In Norway, the mean number of warm nights, with a daily minimum at or above 20 C (68 F) per year at 42 stations rose from 0.1 to 0.2 between the 1960s and the 2010s; the 2020s so far (6 years) average 0.2.
In Norway, the mean number of frost days, with a daily minimum at or below 0 C (32 F) per year at 42 stations fell from 141.3 to 114.9 between the 1960s and the 2010s; the 2020s so far (6 years) average 109.1.
In Norway, the mean number of ice days, with a daily maximum at or below 0 C (32 F) per year at 42 stations fell from 66.4 to 46.4 between the 1960s and the 2010s; the 2020s so far (6 years) average 42.3.

Days at or above 30 C

Mean days with a daily maximum at or above 30 C (86 F) per year, by decade (1960s to 2020s), Norway. The same 42 stations are in every decade: each has complete years in every decade from the 1960s, so a change in the station mix cannot move the bars. The 2020s are not over: 6 years so far.

Days at or above 35 C

Mean days with a daily maximum at or above 35 C (95 F) per year, by decade (1960s to 2020s), Norway. The same 42 stations are in every decade: each has complete years in every decade from the 1960s, so a change in the station mix cannot move the bars. The 2020s are not over: 6 years so far.

Days at or above 40 C

Mean days with a daily maximum at or above 40 C (104 F) per year, by decade (1960s to 2020s), Norway. The same 42 stations are in every decade: each has complete years in every decade from the 1960s, so a change in the station mix cannot move the bars. The 2020s are not over: 6 years so far.

Tropical nights (min at or above 20 C)

Mean warm nights, with a daily minimum at or above 20 C (68 F) per year, by decade (1960s to 2020s), Norway. The same 42 stations are in every decade: each has complete years in every decade from the 1960s, so a change in the station mix cannot move the bars. The 2020s are not over: 6 years so far.

Frost days (min at or below 0 C)

Mean frost days, with a daily minimum at or below 0 C (32 F) per year, by decade (1960s to 2020s), Norway. The same 42 stations are in every decade: each has complete years in every decade from the 1960s, so a change in the station mix cannot move the bars. The 2020s are not over: 6 years so far.

Ice days (max at or below 0 C)

Mean ice days, with a daily maximum at or below 0 C (32 F) per year, by decade (1960s to 2020s), Norway. The same 42 stations are in every decade: each has complete years in every decade from the 1960s, so a change in the station mix cannot move the bars. The 2020s are not over: 6 years so far.

Each measure counts days in complete years only. A station is in a measure's set when it has complete years in every decade from the 1960s, so each chart compares the same places over time. A grey bar is a decade that is not over.

Heavy Rain and Dry Spells by Decade: Norway

203 stations in the annual rain series

In Norway, annual rain at 203 stations is shown as a percent difference from each station's own 1961-1990 mean, for 75 years from 1951 to 2025.
The trend in annual rain is +2.6 percent per decade (95 percent interval +1.7 to +3.5), fitted to 75 years from 1951 to 2025.
In Norway, the share of a year's rain that fell in its wettest five days fell from 8.8 to 8.5 percent between the 1960s and the 2020s at 126 stations.
In Norway, the mean number of days with 25 mm (1.0 in) or more of rain per year rose from 8.13 to 11.81 between the 1960s and the 2020s.
In Norway, the mean number of days with 50 mm (2.0 in) or more of rain per year rose from 1.02 to 1.77 between the 1960s and the 2020s.
In Norway, the mean number of days with 100 mm (3.9 in) or more of rain per year was 0.05 in both between the 1960s and the 2020s.
In Norway, the mean longest dry spell of the year, in days with less than 1 mm of rain in a row, fell from 22.4 to 20.8 days between the 1960s and the 2020s, over the same 126 stations in every decade.

Annual rain against the 1961-1990 mean

Annual rain in Norway as a percent difference from each station's own 1961-1990 mean, for 203 stations with a long record, 1951 to 2025. Stations are averaged in 5 degree grid cells and the cells are weighted by the cosine of latitude.

Annual rain as a percent difference from the 1961-1990 mean, Norway
Year	Annual rain, percent difference from the mean
1951	-4.9%
1952	-10.2%
1953	1.4%
1954	0.6%
1955	-15.3%
1956	-18.5%
1957	9.7%
1958	-4.5%
1959	-3.6%
1960	-14.1%
1961	6.6%
1962	0.0%
1963	-6.5%
1964	11.5%
1965	-9.5%
1966	-3.1%
1967	16.4%
1968	-9.6%
1969	-15.1%
1970	-8.2%
1971	0.2%
1972	-5.3%
1973	7.1%
1974	-4.1%
1975	12.3%
1976	-14.2%
1977	-7.9%
1978	-7.9%
1979	-5.2%
1980	-12.3%
1981	-1.4%
1982	9.4%
1983	17.2%
1984	-9.8%
1985	4.6%
1986	-0.6%
1987	-3.7%
1988	9.4%
1989	17.0%
1990	14.3%
1991	3.2%
1992	18.1%
1993	-1.1%
1994	2.8%
1995	10.5%
1996	-8.4%
1997	1.9%
1998	1.0%
1999	16.0%
2000	18.3%
2001	8.8%
2002	-1.6%
2003	3.4%
2004	6.3%
2005	12.7%
2006	12.9%
2007	15.0%
2008	4.8%
2009	0.3%
2010	-7.2%
2011	20.3%
2012	7.7%
2013	7.7%
2014	4.3%
2015	18.4%
2016	5.3%
2017	19.5%
2018	5.1%
2019	8.8%
2020	26.7%
2021	-1.6%
2022	10.7%
2023	7.5%
2024	19.7%
2025	15.5%

Share of the year's rain in its wettest five days

Mean share of a year's rain that fell in its wettest five days, by decade, Norway, 1960s to 2020s, for 126 stations that report complete years in every decade.

Days with 25 mm or more rain

Mean number of days with 25 mm (1.0 in) or more of rain per year, by decade, Norway, 1960s to 2020s, for a fixed set of stations that report complete years in every decade.

Days with 50 mm or more rain

Mean number of days with 50 mm (2.0 in) or more of rain per year, by decade, Norway, 1960s to 2020s, for a fixed set of stations that report complete years in every decade.

Days with 100 mm or more rain

Mean number of days with 100 mm (3.9 in) or more of rain per year, by decade, Norway, 1960s to 2020s, for a fixed set of stations that report complete years in every decade.

Longest dry spell of the year

Mean length in days of the longest run of days with less than 1 mm of rain in a year, by decade, Norway, 1960s to 2020s, over the same 126 stations in every decade.

The annual rain series uses stations with at least 50 complete years since 1951 and a 1961-1990 baseline. The decade charts use fixed sets of stations, the same in every decade from the 1960s. A dry day has less than 1 mm (0.04 in) of rain.

The New Normal

Norway, 1961-1990 against 2011-2025

Change in annual mean temperature from 1961-1990 to 2011-2025 at 46 stations in Norway, one dot per station (the stations with the most complete years, at most one per half degree cell). The scope figures use 51 stations with at least 20 complete years in 1961-1990 and in 1991-2020 and at least 8 in 2011-2025. Made with Natural Earth.

Change in annual mean temperature from 1961-1990 to 2011-2025, Norway
Station	Change in mean temperature
Hopen	+4.1 C (+7.4 F)
Bjoernoeya	+2.7 C (+4.9 F)
Gardermoen Sor	+2.3 C (+4.2 F)
Rygge	+2.1 C (+3.7 F)
Sihccajavri	+2.0 C (+3.6 F)
Kise Pa Hedmark	+1.8 C (+3.3 F)
Melsom	+1.8 C (+3.3 F)
Oslo Blindern	+1.8 C (+3.2 F)
Vardoe	+1.7 C (+3.1 F)
Tveitsund	+1.7 C (+3.1 F)
Kjobli I Snaasa	+1.7 C (+3.0 F)
Sauda	+1.6 C (+2.9 F)
Torungen Fyr	+1.6 C (+2.9 F)
Lista Fyr	+1.6 C (+2.8 F)
Fokstua	+1.6 C (+2.8 F)
Drevsjo	+1.6 C (+2.8 F)
Kjevik	+1.6 C (+2.8 F)
Nordstraum I Kvaenangen	+1.6 C (+2.8 F)
Nelaug	+1.5 C (+2.8 F)
Alta Lufthavn	+1.5 C (+2.8 F)
Faerder Fyr	+1.5 C (+2.8 F)
Sola	+1.5 C (+2.8 F)
Asker	+1.5 C (+2.7 F)
Makkaur Fyr	+1.5 C (+2.7 F)
Lindesnes Fyr	+1.5 C (+2.7 F)
Slettnes Fyr	+1.5 C (+2.7 F)
Orland	+1.5 C (+2.6 F)
Lyngor Fyr	+1.5 C (+2.6 F)
Bergen/Flesland	+1.5 C (+2.6 F)
Tromso	+1.4 C (+2.6 F)
Skrova Fyr	+1.4 C (+2.6 F)
Bodoe VI	+1.4 C (+2.6 F)
Vaernes	+1.4 C (+2.5 F)
Takle	+1.4 C (+2.5 F)
Bardufoss	+1.4 C (+2.4 F)
Utsira Fyr	+1.3 C (+2.4 F)
Sandane	+1.3 C (+2.4 F)
Slatteroy Fyr	+1.3 C (+2.4 F)
Fruholmen Fyr	+1.3 C (+2.3 F)
Andoya	+1.2 C (+2.2 F)
Svinoy Fyr	+1.2 C (+2.2 F)
Buholmrasa Fyr	+1.2 C (+2.2 F)
Torsvag Fyr	+1.2 C (+2.2 F)
Vigra	+1.2 C (+2.2 F)
Tafjord	+1.1 C (+2.1 F)
Glomfjord	+1.1 C (+1.9 F)

Across 51 stations in Norway with long records, the mean annual temperature was 3.8 C (38.8 F) in 1961-1990, 4.9 C (40.8 F) in 1991-2020 and 5.4 C (41.7 F) in 2011-2025, a change of +1.6 C (+2.9 F) from the first period to the latest.

Mean annual rain, from years with at least 329 days of rain data, was 892.3 mm (35.1 in) in 1961-1990, 956.6 mm (37.7 in) in 1991-2020 and 988.4 mm (38.9 in) in 2011-2025, a change of +10.8% from the first period to the latest.

Of the 46 stations on the map, 46 were warmer in 2011-2025 than in 1961-1990.

29 of the 33 stations on the map with a rain figure had more rain and 4 had less.

Three periods

Mean temperature and annual rain in three periods, Norway
Period	Mean temperature	Annual rain
1961-1990	3.8 C (38.8 F)	892.3 mm (35.1 in)
1991-2020	4.9 C (40.8 F)	956.6 mm (37.7 in)
2011-2025	5.4 C (41.7 F)	988.4 mm (38.9 in)
Change, 1991-2020 against 1961-1990	+1.1 C (+2.0 F)	+7.2%
Change, 2011-2025 against 1961-1990	+1.6 C (+2.9 F)	+10.8%

Based on 51 stations with at least 20 complete years in 1961-1990 and in 1991-2020 and at least 8 in 2011-2025. The periods 1991-2020 and 2011-2025 overlap. Scope means are weighted by grid cell, as in the warming series; rain counts years with at least 329 days of rain data.

Longest Hot, Cold, Wet and Dry Streaks: Norway

4 lists of 10

In Norway, the longest run of frost days in a row in the data is 284 days, at Hopen (Norway), from 5 September 1966 to 15 June 1967.
In Norway, the longest run of ice days in a row in the data is 151 days, at Suolovuopmi (Norway), from 6 November 1965 to 5 April 1966.
In Norway, the longest run of dry days in a row in the data is 306 days, at Halden (Norway), in 1882.
In Norway, the longest run of wet days in a row in the data is 52 days, at Brekke I Sogn (Norway), in 1990.

Longest run of frost days (minimum at or below 0 C)

Consecutive days with a daily minimum at or below 0 C (32 F).

Longest run of frost days (minimum at or below 0 C), Norway: the 10 longest runs
Rank	Station	Country	Length	When
1	Hopen	Norway	284 days	5 September 1966 to 15 June 1967
2	Ny-Alesund	Norway	283 days	8 September 1978 to 17 June 1979
3	Isfjord Radio	Norway	282 days	13 September 1968 to 21 June 1969
4	Sihccajavri	Norway	248 days	21 September 1916 to 26 May 1917
5	Sveagruva	Norway	245 days	4 October 1997 to 5 June 1998
6	Sognefjellhytta	Norway	232 days	17 September 2012 to 6 May 2013
7	Fokstua	Norway	224 days	30 September 1923 to 10 May 1924
8	Kautokeino	Norway	223 days	2 October 1960 to 12 May 1961
9	Bjoernoeya	Norway	222 days	10 October 1926 to 19 May 1927
10	Karasjok	Norway	219 days	3 October 1960 to 9 May 1961

Longest run of ice days (maximum at or below 0 C)

Consecutive days with a daily maximum at or below 0 C (32 F).

Longest run of ice days (maximum at or below 0 C), Norway: the 10 longest runs
Rank	Station	Country	Length	When
1	Suolovuopmi	Norway	151 days	6 November 1965 to 5 April 1966
2	Sihccajavri	Norway	149 days	7 November 1965 to 4 April 1966
3	Kautokeino	Norway	146 days	10 November 1965 to 4 April 1966
4	Sveagruva	Norway	146 days	21 November 2019 to 14 April 2020
5	Karasjok	Norway	141 days	10 November 1965 to 30 March 1966
6	Sognefjellhytta	Norway	135 days	5 December 1982 to 18 April 1983
7	Isfjord Radio	Norway	123 days	21 January to 22 May 1968
8	Venabu	Norway	121 days	6 November 1985 to 6 March 1986
9	Hopen	Norway	119 days	21 October 1970 to 16 February 1971
10	Tryvasshogda	Norway	115 days	11 November 1965 to 5 March 1966

Longest dry spell (days under 1 mm of rain), within one year

Consecutive days with less than 1 mm (0.04 in) of rain, the longest run within a year. The dates are not kept, so the list gives the year (within the year).

Longest dry spell (days under 1 mm of rain), within one year, Norway: the 10 longest runs
Rank	Station	Country	Length	When
1	Halden	Norway	306 days	within 1882
2	Oksoey Fyr	Norway	305 days	within 1875
3	Bones I Bardu	Norway	259 days	within 1943
4	Roldal	Norway	186 days	within 1902
5	Stavanger - Valand	Norway	185 days	within 1941
6	Mykland	Norway	181 days	within 1895
7	Vik I Sogn III	Norway	179 days	within 1895
8	Steigen	Norway	168 days	within 1915
9	Kjelsas I Sorkedalen	Norway	158 days	within 1939
10	Lyngor Fyr	Norway	154 days	within 2004

Longest wet spell (days with 1 mm or more of rain), within one year

Consecutive days with 1 mm (0.04 in) or more of rain, the longest run within a year. The dates are not kept, so the list gives the year (within the year).

Longest wet spell (days with 1 mm or more of rain), within one year, Norway: the 10 longest runs
Rank	Station	Country	Length	When
1	Brekke I Sogn	Norway	52 days	within 1990
2	Takle	Norway	52 days	within 2006
3	Ytre Solund	Norway	51 days	within 1990
4	Alfoten II	Norway	50 days	within 2000
5	Leksvik - Myran	Norway	49 days	within 2000
6	Maudal	Norway	47 days	within 2006
7	Helland I Gjesdal	Norway	47 days	within 2006
8	Barkestad	Norway	46 days	within 1991
9	Rjukan	Norway	46 days	within 2000
10	Mykland	Norway	46 days	within 2000

A run belongs to the year it started in, even when it ran on into the next year. A station appears once per list, with its longest run in a complete year. Dry and wet spells are the longest run within a year. Lists use complete years only, so a long run in a year with gaps in the record is not counted.

Snow Cover and Heavy Snowfall by Decade: Norway

108 stations, fixed set

In Norway, the mean number of days per season with snow on the ground (25 mm or more, 1.0 in) at 108 stations fell from 132.7 to 94.9 between the 1960s and the 2020s.
In Norway, the mean number of heavy snowfall days per season (100 mm or more, 3.9 in, in a day) was 0.00 in both between the 1960s and the 2020s.
The trend in snow cover days is -6.3 days per decade (95 percent interval -8.5 to -4.1), fitted to 66 seasons from 1960 to 2025.

Days with snow on the ground per season

Mean number of days per season with at least 25 mm (1.0 in) of snow on the ground, by decade, Norway, 1960s to 2020s, the same 108 stations in every decade. A season runs from 1 July to 30 June.

Heavy snowfall days per season

Mean number of days per season with 100 mm (3.9 in) or more of new snow, by decade, Norway, 1960s to 2020s, the same 108 stations in every decade.

A snow season runs from 1 July to 30 June and is labelled by the year it starts in, so 2009-10 is the season of 2009. A season is complete when at least 150 days report snow depth. The set holds stations at 20 degrees north or further north with at least 5 snow cover days per season on average in 1961-1990 and complete seasons in every decade.

Biggest One Day Temperature Swings: Norway

6 lists of 10

In Norway, the largest reported one day rise in the daily maximum is 35.8 C (64.4 F), at Sveagruva (Norway) on 8 April 2004.
In Norway, the largest reported one day drop in the daily maximum is 29.8 C (53.6 F), at Karasjok (Norway) on 26 December 1961.
In Norway, the largest reported one day rise in the daily minimum is 39.0 C (70.2 F), at Roros (Norway) on 14 January 1914.
In Norway, the largest reported one day drop in the daily minimum is 33.1 C (59.6 F), at Sveagruva (Norway) on 10 November 2003.
In Norway, the largest reported widest range between the high and the low of one day is 40.0 C (72.0 F), at Sveagruva (Norway) on 2 March 2002.
In Norway, the smallest reported narrowest range between the high and the low of one day is 0.0 C (0.0 F), at Mike (Norway) on 29 July 1950.

Caveat.Single readings can still be instrument errors that quality control missed. A station with one faulty value can top a list, so read each entry as a reported value, not as a confirmed event.

Biggest one day rise in the daily maximum

The largest increase in the daily maximum temperature from one day to the next. Values are in degrees Celsius with Fahrenheit beside them.

Biggest one day rise in the daily maximum, Norway
Rank	Station	Country	Value	Date
1	Sveagruva	Norway	35.8 C (64.4 F)	8 April 2004
2	Karasjok	Norway	34.4 C (61.9 F)	23 December 1962
3	Kautokeino	Norway	33.6 C (60.5 F)	23 December 1962
4	Karasjok-Markannjarga	Norway	30.1 C (54.2 F)	8 January 2016
5	Roros	Norway	29.6 C (53.3 F)	1 January 2002
6	Drevsjo	Norway	28.8 C (51.8 F)	1 January 2002
7	Cuovddatmohkki	Norway	28.3 C (50.9 F)	20 January 2014
8	Rustefjelbma	Norway	27.6 C (49.7 F)	16 February 1957
9	Kjobli I Snaasa	Norway	25.8 C (46.4 F)	2 December 1981
10	Hopen	Norway	24.8 C (44.6 F)	15 January 1967

Biggest one day drop in the daily maximum

The largest decrease in the daily maximum temperature from one day to the next. Values are in degrees Celsius with Fahrenheit beside them.

Biggest one day drop in the daily maximum, Norway
Rank	Station	Country	Value	Date
1	Karasjok	Norway	29.8 C (53.6 F)	26 December 1961
2	Sveagruva	Norway	29.3 C (52.7 F)	16 April 2004
3	Cuovddatmohkki	Norway	26.4 C (47.5 F)	2 February 1970
4	Ny-Alesund	Norway	26.3 C (47.3 F)	23 February 1979
5	Rustefjelbma	Norway	26.0 C (46.8 F)	27 December 1956
6	Hopen	Norway	25.8 C (46.4 F)	19 January 1951
7	Kautokeino	Norway	25.1 C (45.2 F)	25 January 2024
8	Sihccajavri	Norway	24.6 C (44.3 F)	18 January 1981
9	Dividalen	Norway	24.5 C (44.1 F)	12 February 1954
10	Suolovuopmi	Norway	24.0 C (43.2 F)	19 December 1988

Biggest one day rise in the daily minimum

The largest increase in the daily minimum temperature from one day to the next. Values are in degrees Celsius with Fahrenheit beside them.

Biggest one day rise in the daily minimum, Norway
Rank	Station	Country	Value	Date
1	Roros	Norway	39.0 C (70.2 F)	14 January 1914
2	Karasjok	Norway	33.0 C (59.4 F)	24 December 1962
3	Kautokeino	Norway	31.1 C (56.0 F)	11 December 2013
4	Karasjok-Markannjarga	Norway	30.7 C (55.3 F)	29 December 2004
5	Kjobli I Snaasa	Norway	30.6 C (55.1 F)	16 February 1942
6	Drevsjo	Norway	29.8 C (53.6 F)	7 January 2003
7	Cuovddatmohkki	Norway	29.1 C (52.4 F)	21 December 2006
8	Suolovuopmi	Norway	28.5 C (51.3 F)	14 November 1983
9	Dividalen	Norway	26.8 C (48.2 F)	22 November 1940
10	Rustefjelbma	Norway	26.6 C (47.9 F)	7 December 1961

Biggest one day drop in the daily minimum

The largest decrease in the daily minimum temperature from one day to the next. Values are in degrees Celsius with Fahrenheit beside them.

Biggest one day drop in the daily minimum, Norway
Rank	Station	Country	Value	Date
1	Sveagruva	Norway	33.1 C (59.6 F)	10 November 2003
2	Roros	Norway	30.0 C (54.0 F)	16 February 1933
3	Karasjok	Norway	29.8 C (53.6 F)	11 January 1941
4	Sihccajavri	Norway	27.0 C (48.6 F)	25 December 1920
5	Hopen	Norway	26.7 C (48.1 F)	15 March 1964
6	Kjobli I Snaasa	Norway	26.6 C (47.9 F)	24 December 2014
7	Kautokeino	Norway	26.2 C (47.2 F)	7 December 1931
8	Cuovddatmohkki	Norway	25.7 C (46.3 F)	5 January 1996
9	Suolovuopmi	Norway	25.0 C (45.0 F)	18 December 1988
10	Drevsjo	Norway	24.8 C (44.6 F)	14 March 1981

Widest range between the high and the low of one day

The largest difference between the highest and the lowest temperature of the same day. Values are in degrees Celsius with Fahrenheit beside them.

Widest range between the high and the low of one day, Norway
Rank	Station	Country	Value	Date
1	Sveagruva	Norway	40.0 C (72.0 F)	2 March 2002
2	Karasjok	Norway	35.0 C (63.0 F)	4 February 1960
3	Kjobli I Snaasa	Norway	34.2 C (61.6 F)	31 March 1958
4	Kautokeino	Norway	33.6 C (60.5 F)	23 December 1962
5	Karasjok-Markannjarga	Norway	33.6 C (60.5 F)	25 January 2017
6	Rustefjelbma	Norway	33.1 C (59.6 F)	31 December 1976
7	Roros	Norway	32.7 C (58.9 F)	15 January 1957
8	Suolovuopmi	Norway	32.5 C (58.5 F)	13 November 1983
9	Cuovddatmohkki	Norway	32.3 C (58.1 F)	5 March 1987
10	Sihccajavri	Norway	32.1 C (57.8 F)	5 March 1987

Narrowest range between the high and the low of one day

The smallest difference between the highest and the lowest temperature of the same day. Values are in degrees Celsius with Fahrenheit beside them.

Narrowest range between the high and the low of one day, Norway
Rank	Station	Country	Value	Date
1	Mike	Norway	0.0 C (0.0 F)	29 July 1950
2	Skien - Geiteryggen	Norway	0.0 C (0.0 F)	29 March 1963
3	Sortland-Kleiva	Norway	0.0 C (0.0 F)	16 December 1976
4	Sarpsborg	Norway	0.0 C (0.0 F)	20 June 2009
5	Faerder Fyr	Norway	0.1 C (0.2 F)	28 March 1939
6	Kjevik	Norway	0.1 C (0.2 F)	5 September 1951
7	Torp	Norway	0.1 C (0.2 F)	26 January 2009
8	Lyngor Fyr	Norway	0.1 C (0.2 F)	29 December 2011
9	Torungen Fyr	Norway	0.2 C (0.4 F)	25 October 1996
10	Vardo	Norway	0.2 C (0.4 F)	7 December 2025

Only stations with at least 10 complete years are listed, and a station appears once per list.

Hot and Dry Summers: Norway

69 stations with a 1961-1990 record

In Norway, the share of stations with a hot and dry summer is shown for each year from 1946 to 2026, for 69 stations with at least 20 complete summers in 1961-1990. Each year counts the stations of that set with a complete summer in the year.
In Norway, 8.9% of station summers in 1961-1990 were hot and dry (1,945 station summers).
In Norway, 9.3% of station summers in 2012-2026 were hot and dry (624 station summers).
In Norway, 1947 had the highest share: 70.0% of 10 stations (7).

A summer is hot when its mean daily maximum is at or above the station's 80th percentile of its 1961-1990 summers, and dry when its rain is at or below the 20th percentile. A summer is hot and dry when it is both. Summer is June to August north of the equator and December to February south of it, labelled by the year of its first month.

Share of stations with a hot and dry summer

Percent of stations with a complete summer that were both hot and dry, by year, Norway, 1946 to 2026, out of 69 stations with at least 20 complete summers in 1961-1990. Dashed line: the 1961-1990 level in this data, 8.9% of station summers. The most in one year was 70.0%. Dashed line: 1961-1990 level, 8.9%.

Share of stations with a hot and dry summer by year, Norway
Summer	Stations with a hot and dry summer
1946	20.0%
1947	70.0%
1948	9.1%
1949	0.0%
1950	33.3%
1951	0.0%
1952	0.0%
1953	22.2%
1954	0.0%
1955	45.7%
1956	0.0%
1957	0.0%
1958	0.0%
1959	32.7%
1960	5.5%
1961	0.0%
1962	0.0%
1963	3.4%
1964	0.0%
1965	0.0%
1966	0.0%
1967	0.0%
1968	7.7%
1969	31.8%
1970	20.3%
1971	0.0%
1972	5.9%
1973	7.2%
1974	0.0%
1975	40.6%
1976	42.0%
1977	0.0%
1978	7.6%
1979	1.5%
1980	31.3%
1981	0.0%
1982	18.2%
1983	21.2%
1984	3.1%
1985	1.5%
1986	0.0%
1987	0.0%
1988	6.5%
1989	1.6%
1990	6.6%
1991	1.8%
1992	3.4%
1993	0.0%
1994	1.8%
1995	14.3%
1996	0.0%
1997	50.9%
1998	8.8%
1999	3.4%
2000	1.9%
2001	1.9%
2002	12.7%
2003	9.4%
2004	3.8%
2005	0.0%
2006	28.6%
2007	0.0%
2008	4.1%
2009	2.1%
2010	2.2%
2011	6.5%
2012	0.0%
2013	4.5%
2014	17.4%
2015	0.0%
2016	0.0%
2017	2.4%
2018	20.0%
2019	10.3%
2020	5.0%
2021	24.4%
2022	12.8%
2023	30.0%
2024	2.4%
2025	7.7%
2026	5.0%

The ten most extreme station summers

The most extreme hot and dry station summers, Norway
Rank	Station	Country	Summer	Mean daily maximum vs 1961-1990	Rain, percent of 1961-1990 mean
1	Utsira Fyr	Norway	1947	+2.6 C (+4.8 F)	0%
2	Fiskabygd	Norway	1997	+3.5 C (+6.4 F)	71%
3	Nedre Vats	Norway	1997	+4.1 C (+7.4 F)	64%
4	Orland	Norway	2002	+4.8 C (+8.7 F)	46%
5	Utsira Fyr	Norway	1945	+1.8 C (+3.2 F)	0%
6	Bjoernoeya	Norway	2024	+4.6 C (+8.2 F)	50%
7	Oslo Blindern	Norway	1947	+4.2 C (+7.6 F)	34%
8	Utsira Fyr	Norway	1950	+1.6 C (+2.8 F)	0%
9	Takle	Norway	1997	+3.5 C (+6.2 F)	50%
10	Sandane	Norway	1997	+3.8 C (+6.8 F)	57%

Ranked by the temperature z score minus the rain z score against the station's own 1961-1990 mean and standard deviation (at least 0.3 C and 5 mm). A summer is labelled by the year of its first month.

Decade	Mean days per year
1960s	141.3
1970s	135.9
1980s	132.7
1990s	121.9
2000s	114.1
2010s	114.9
2020s (so far, 6 years)	109.1

Decade	Mean days per year
1960s	66.4
1970s	59.0
1980s	62.0
1990s	49.4
2000s	44.5
2010s	46.4
2020s (so far, 6 years)	42.3

Decade	Mean days per year
1960s	8.13
1970s	9.12
1980s	9.52
1990s	10.12
2000s	10.40
2010s	11.16
2020s	11.81

Decade	Mean days per year
1960s	1.02
1970s	1.36
1980s	1.36
1990s	1.50
2000s	1.40
2010s	1.58
2020s	1.77

Decade	Mean days per year
1960s	0.05
1970s	0.03
1980s	0.08
1990s	0.09
2000s	0.05
2010s	0.06
2020s	0.05

Decade	Mean longest dry spell, days
1960s	22.4 days
1970s	23.6 days
1980s	22.4 days
1990s	22.1 days
2000s	19.7 days
2010s	22.0 days
2020s	20.8 days

Decade	Mean heavy snowfall days per season
1960s	0.00
1970s	0.00
1980s	0.00
1990s	0.00
2000s	0.00
2010s	0.00
2020s	0.00

Climate Trends in Norway