Grundforsen Weather Records (SWE00139590)
Record envelope, standing records and threshold days for Grundforsen (SWE00139590), Sweden, with 69 years of record.
Key Facts for Grundforsen
- Grundforsen (SWE00139590) is a weather station in Sweden at 61.28 latitude and 12.86 longitude, 412 m (1,352 ft) above sea level.
- The station reports from 1945 to 2013, 69 years of record.
- 1,464 records set at Grundforsen still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Grundforsen set a daily record high maximum temperature of 27.9 C (82.2 F) on 25 May 2012.
About the Station
- Location: Sweden, 61.28 latitude, 12.86 longitude.
- Elevation: 412 m (1,352 ft).
- Period of record: 1945 to 2013, 69 years.
- Eligible elements: tmax, tmin, prcp.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 8.5 C (47.3 F) | -46.0 C (-50.8 F) | n/a | n/a |
| Feb | 9.0 C (48.2 F) | -41.5 C (-42.7 F) | n/a | n/a |
| Mar | 15.0 C (59.0 F) | -36.8 C (-34.2 F) | n/a | n/a |
| Apr | 21.5 C (70.7 F) | -24.5 C (-12.1 F) | n/a | n/a |
| May | 29.0 C (84.2 F) | -15.4 C (4.3 F) | n/a | n/a |
| Jun | 34.0 C (93.2 F) | -7.5 C (18.5 F) | n/a | n/a |
| Jul | 32.0 C (89.6 F) | -3.5 C (25.7 F) | n/a | n/a |
| Aug | 31.8 C (89.2 F) | -5.0 C (23.0 F) | n/a | n/a |
| Sep | 26.5 C (79.7 F) | -11.0 C (12.2 F) | n/a | n/a |
| Oct | 20.3 C (68.5 F) | -24.0 C (-11.2 F) | n/a | n/a |
| Nov | 10.5 C (50.9 F) | -32.0 C (-25.6 F) | n/a | n/a |
| Dec | 9.5 C (49.1 F) | -42.5 C (-44.5 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1945 | 23 |
| 1946 | 28 |
| 1947 | 39 |
| 1948 | 17 |
| 1949 | 21 |
| 1950 | 11 |
| 1951 | 16 |
| 1952 | 20 |
| 1953 | 17 |
| 1954 | 12 |
| 1955 | 33 |
| 1956 | 12 |
| 1957 | 30 |
| 1958 | 32 |
| 1959 | 24 |
| 1960 | 17 |
| 1961 | 21 |
| 1962 | 17 |
| 1963 | 13 |
| 1964 | 20 |
| 1965 | 28 |
| 1966 | 36 |
| 1967 | 18 |
| 1968 | 29 |
| 1969 | 26 |
| 1970 | 23 |
| 1971 | 31 |
| 1972 | 11 |
| 1973 | 27 |
| 1974 | 12 |
| 1975 | 22 |
| 1976 | 24 |
| 1977 | 19 |
| 1978 | 23 |
| 1979 | 13 |
| 1980 | 25 |
| 1981 | 32 |
| 1982 | 24 |
| 1983 | 8 |
| 1984 | 20 |
| 1985 | 30 |
| 1986 | 17 |
| 1987 | 29 |
| 1988 | 10 |
| 1989 | 17 |
| 1990 | 34 |
| 1991 | 15 |
| 1992 | 26 |
| 1993 | 16 |
| 1994 | 13 |
| 1995 | 18 |
| 1996 | 12 |
| 1997 | 18 |
| 1998 | 22 |
| 1999 | 23 |
| 2000 | 31 |
| 2001 | 19 |
| 2002 | 26 |
| 2003 | 10 |
| 2004 | 19 |
| 2005 | 26 |
| 2006 | 37 |
| 2007 | 22 |
| 2008 | 22 |
| 2009 | 19 |
| 2010 | 19 |
| 2011 | 28 |
| 2012 | 12 |
All-Time Record Progression
4 new records| Date | Kind | Detail |
|---|---|---|
| 1978-12-31 | Record low minimum temperature | Record low minimum temperature -42.5 C (-44.5 F) |
| 1979-01-01 | Record low minimum temperature | Record low minimum temperature -46.0 C (-50.8 F) |
| 1994-07-28 | Record high minimum temperature | Record high minimum temperature 18.0 C (64.4 F) |
| 1997-08-30 | Record daily precipitation | Record daily precipitation 88.0 mm (3.5 in) |
Wettest Day of Each Month
Aug: 88.0 mm (3.5 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 22.6 mm (0.9 in) | 11 January 1965 |
| Feb | 25.5 mm (1.0 in) | 7 February 2009 |
| Mar | 21.3 mm (0.8 in) | 14 March 1951 |
| Apr | 40.8 mm (1.6 in) | 7 April 1982 |
| May | 43.8 mm (1.7 in) | 19 May 1973 |
| Jun | 41.9 mm (1.6 in) | 11 June 2010 |
| Jul | 81.9 mm (3.2 in) | 26 July 1950 |
| Aug | 88.0 mm (3.5 in) | 30 August 1997 |
| Sep | 57.7 mm (2.3 in) | 1 September 1946 |
| Oct | 49.9 mm (2.0 in) | 14 October 1964 |
| Nov | 47.0 mm (1.9 in) | 7 November 2000 |
| Dec | 38.2 mm (1.5 in) | 1 December 1997 |
Period of Record Coverage
1945 to 2013| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1945 | 364 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 363 | 99% | Yes |
| 1956 | 365 | 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 | 364 | 99% | 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 | 365 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 364 | 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 | 152 | 42% | No |
| 2013 | 20 | 5% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 25 May 2012 | Grundforsen, SE | daily high max | 27.9 C (82.2 F) | 4.4 C (7.9 F) | 20 years | 20 of 100 (Routine) |
| 24 May 2012 | Grundforsen, SE | daily high max | 26.4 C (79.5 F) | 2.8 C (5.0 F) | 36 years | 21 of 100 (Routine) |
| 23 May 2012 | Grundforsen, SE | daily high max | 25.6 C (78.1 F) | 0.1 C (0.2 F) | 19 years | 11 of 100 (Routine) |
| 11 May 2012 | Grundforsen, SE | daily rain | 13.6 mm (0.5 in) | 5.4 mm (0.21 in) | 55 years | 20 of 100 (Routine) |
| 5 May 2012 | Grundforsen, SE | daily low max | 2.5 C (36.5 F) | 0.1 C (0.2 F) | 15 years | 10 of 100 (Routine) |
| 27 March 2012 | Grundforsen, SE | daily high min | 2.1 C (35.8 F) | 1.6 C (2.9 F) | 44 years | 20 of 100 (Routine) |
| 25 March 2012 | Grundforsen, SE | daily high min | 1.5 C (34.7 F) | 1.0 C (1.8 F) | 59 years | 24 of 100 (Routine) |
| 21 March 2012 | Grundforsen, SE | daily high min | 1.1 C (34.0 F) | 1.1 C (2.0 F) | 66 years | 26 of 100 (Routine) |
| 21 March 2012 | Grundforsen, SE | daily high max | 13.2 C (55.8 F) | 3.9 C (7.0 F) | 1 year | 15 of 100 (Routine) |
| 12 March 2012 | Grundforsen, SE | daily high max | 10.7 C (51.3 F) | 1.2 C (2.2 F) | 67 years | 28 of 100 (Routine) |
| 1 March 2012 | Grundforsen, SE | daily high max | 9.6 C (49.3 F) | 1.6 C (2.9 F) | 53 years | 24 of 100 (Routine) |
| 29 February 2012 | Grundforsen, SE | daily high max | 8.1 C (46.6 F) | 4.1 C (7.4 F) | 44 years | 26 of 100 (Routine) |
| 28 February 2012 | Grundforsen, SE | daily high max (Tie) | 6.0 C (42.8 F) | tie | 66 years | 6 of 100 (Routine) |
| 4 February 2012 | Grundforsen, SE | daily low min | -36.0 C (-32.8 F) | 1.5 C (2.7 F) | 10 years | 10 of 100 (Routine) |
| 27 December 2011 | Grundforsen, SE | daily high max | 5.9 C (42.6 F) | 0.3 C (0.5 F) | 36 years | 16 of 100 (Routine) |
| 26 December 2011 | Grundforsen, SE | daily high max | 5.0 C (41.0 F) | 0.6 C (1.1 F) | 21 years | 12 of 100 (Routine) |
| 30 November 2011 | Grundforsen, SE | daily high max | 6.9 C (44.4 F) | 0.3 C (0.5 F) | 4 years | 7 of 100 (Routine) |
| 3 November 2011 | Grundforsen, SE | daily high min | 6.2 C (43.2 F) | 1.2 C (2.2 F) | 36 years | 17 of 100 (Routine) |
| 9 October 2011 | Grundforsen, SE | daily low max | 2.0 C (35.6 F) | 0.5 C (0.9 F) | 36 years | 17 of 100 (Routine) |
| 1 October 2011 | Grundforsen, SE | monthly high max | 20.3 C (68.5 F) | 0.3 C (0.5 F) | 37 years | 27 of 100 (Routine) |
Climate Trend
67 complete years, 1945 to 2011| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1945 | 1.9 C | +0.25 C |
| 1946 | 2.6 C | +0.97 C |
| 1947 | 1.0 C | -0.66 C |
| 1948 | 2.0 C | +0.30 C |
| 1949 | 2.8 C | +1.10 C |
| 1950 | 1.4 C | -0.25 C |
| 1951 | 1.9 C | +0.25 C |
| 1952 | 0.9 C | -0.77 C |
| 1953 | 3.2 C | +1.56 C |
| 1954 | 1.5 C | -0.21 C |
| 1955 | 0.4 C | -1.22 C |
| 1956 | 0.7 C | -0.99 C |
| 1957 | 1.7 C | +0.04 C |
| 1958 | 0.5 C | -1.13 C |
| 1959 | 2.5 C | +0.82 C |
| 1960 | 1.4 C | -0.25 C |
| 1961 | 2.4 C | +0.78 C |
| 1962 | 0.5 C | -1.19 C |
| 1963 | 0.8 C | -0.89 C |
| 1964 | 1.7 C | +0.05 C |
| 1965 | 0.4 C | -1.23 C |
| 1966 | -0.2 C | -1.84 C |
| 1967 | 1.2 C | -0.46 C |
| 1968 | -0.1 C | -1.75 C |
| 1969 | 0.4 C | -1.28 C |
| 1970 | 0.1 C | -1.61 C |
| 1971 | 1.4 C | -0.26 C |
| 1972 | 2.3 C | +0.62 C |
| 1973 | 1.8 C | +0.11 C |
| 1974 | 2.4 C | +0.77 C |
| 1975 | 2.8 C | +1.09 C |
| 1976 | 0.7 C | -1.00 C |
| 1977 | 0.9 C | -0.76 C |
| 1978 | 0.5 C | -1.21 C |
| 1979 | 0.2 C | -1.43 C |
| 1980 | 0.3 C | -1.37 C |
| 1981 | 0.1 C | -1.59 C |
| 1982 | 1.9 C | +0.25 C |
| 1983 | 2.4 C | +0.74 C |
| 1984 | 2.0 C | +0.32 C |
| 1985 | -0.6 C | -2.27 C |
| 1986 | 0.9 C | -0.79 C |
| 1987 | 0.1 C | -1.55 C |
| 1988 | 2.2 C | +0.52 C |
| 1989 | 3.2 C | +1.52 C |
| 1990 | 3.3 C | +1.59 C |
| 1991 | 2.3 C | +0.61 C |
| 1992 | 2.5 C | +0.79 C |
| 1993 | 1.4 C | -0.31 C |
| 1994 | 1.5 C | -0.13 C |
| 1995 | 1.7 C | +0.01 C |
| 1996 | 0.8 C | -0.82 C |
| 1997 | 2.6 C | +0.91 C |
| 1998 | 2.3 C | +0.68 C |
| 1999 | 2.6 C | +0.95 C |
| 2000 | 3.4 C | +1.75 C |
| 2001 | 1.5 C | -0.15 C |
| 2002 | 2.2 C | +0.51 C |
| 2003 | 2.8 C | +1.11 C |
| 2004 | 2.9 C | +1.28 C |
| 2005 | 3.4 C | +1.71 C |
| 2006 | 3.7 C | +2.00 C |
| 2007 | 3.0 C | +1.37 C |
| 2008 | 3.2 C | +1.50 C |
| 2009 | 2.4 C | +0.72 C |
| 2010 | 0.0 C | -1.67 C |
| 2011 | 3.5 C | +1.79 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1945 to 2011. In Fahrenheit: 0.3 F (0.1 to 0.6) per decade. The slope is a straight line fitted to 67 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 (0.1 to 0.6) per decade | 1945 to 2011 | 67 | Rise |
| Mean daily maximum | 0.1 C (-0.1 to 0.2) per decade | 0.1 F (-0.1 to 0.3) per decade | 1945 to 2011 | 67 | Not clearly different from zero |
| Mean daily minimum | 0.3 C (0.2 to 0.5) per decade | 0.5 F (0.3 to 0.8) per decade | 1945 to 2011 | 67 | 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
1945 to 2013| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 34.0 C (93.2 F) | 1947 | 28.0 C (82.4 F) | 69 |
| Coldest night (TNn) | -46.0 C (-50.8 F) | 1979 | -34.9 C (-30.8 F) | 69 |
| Wettest day (Rx1day) | 88.0 mm (3.5 in) | 1997 | 32.4 mm (1.3 in) | 69 |
| Wettest five days (Rx5day) | 148.8 mm (5.9 in) | 1950 | 62.8 mm (2.5 in) | 69 |
| Longest dry spell (CDD) | 40 days | 1947 | 19 days | 69 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1945 | 32.0 C (89.6 F) |
| 1946 | 29.0 C (84.2 F) |
| 1947 | 34.0 C (93.2 F) |
| 1948 | 31.0 C (87.8 F) |
| 1949 | 26.0 C (78.8 F) |
| 1950 | 25.0 C (77.0 F) |
| 1951 | 24.5 C (76.1 F) |
| 1952 | 29.0 C (84.2 F) |
| 1953 | 29.5 C (85.1 F) |
| 1954 | 26.0 C (78.8 F) |
| 1955 | 30.5 C (86.9 F) |
| 1956 | 27.5 C (81.5 F) |
| 1957 | 28.0 C (82.4 F) |
| 1958 | 30.0 C (86.0 F) |
| 1959 | 29.5 C (85.1 F) |
| 1960 | 28.0 C (82.4 F) |
| 1961 | 26.5 C (79.7 F) |
| 1962 | 24.0 C (75.2 F) |
| 1963 | 27.5 C (81.5 F) |
| 1964 | 25.5 C (77.9 F) |
| 1965 | 26.5 C (79.7 F) |
| 1966 | 28.0 C (82.4 F) |
| 1967 | 26.5 C (79.7 F) |
| 1968 | 29.5 C (85.1 F) |
| 1969 | 29.0 C (84.2 F) |
| 1970 | 32.0 C (89.6 F) |
| 1971 | 27.5 C (81.5 F) |
| 1972 | 28.0 C (82.4 F) |
| 1973 | 28.5 C (83.3 F) |
| 1974 | 26.5 C (79.7 F) |
| 1975 | 31.8 C (89.2 F) |
| 1976 | 26.6 C (79.9 F) |
| 1977 | 28.6 C (83.5 F) |
| 1978 | 27.0 C (80.6 F) |
| 1979 | 28.0 C (82.4 F) |
| 1980 | 27.0 C (80.6 F) |
| 1981 | 25.8 C (78.4 F) |
| 1982 | 31.0 C (87.8 F) |
| 1983 | 30.5 C (86.9 F) |
| 1984 | 25.6 C (78.1 F) |
| 1985 | 25.5 C (77.9 F) |
| 1986 | 28.5 C (83.3 F) |
| 1987 | 28.0 C (82.4 F) |
| 1988 | 31.0 C (87.8 F) |
| 1989 | 28.5 C (83.3 F) |
| 1990 | 27.4 C (81.3 F) |
| 1991 | 30.2 C (86.4 F) |
| 1992 | 26.2 C (79.2 F) |
| 1993 | 25.5 C (77.9 F) |
| 1994 | 28.2 C (82.8 F) |
| 1995 | 27.5 C (81.5 F) |
| 1996 | 25.4 C (77.7 F) |
| 1997 | 27.4 C (81.3 F) |
| 1998 | 23.5 C (74.3 F) |
| 1999 | 27.4 C (81.3 F) |
| 2000 | 25.0 C (77.0 F) |
| 2001 | 27.6 C (81.7 F) |
| 2002 | 28.0 C (82.4 F) |
| 2003 | 29.8 C (85.6 F) |
| 2004 | 29.2 C (84.6 F) |
| 2005 | 29.6 C (85.3 F) |
| 2006 | 30.6 C (87.1 F) |
| 2007 | 29.5 C (85.1 F) |
| 2008 | 31.5 C (88.7 F) |
| 2009 | 29.3 C (84.7 F) |
| 2010 | 26.8 C (80.2 F) |
| 2011 | 27.1 C (80.8 F) |
| 2012 | 27.9 C (82.2 F) |
| 2013 | -0.1 C (31.8 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1945 | -35.0 C (-31.0 F) |
| 1946 | -32.0 C (-25.6 F) |
| 1947 | -36.0 C (-32.8 F) |
| 1948 | -37.0 C (-34.6 F) |
| 1949 | -32.5 C (-26.5 F) |
| 1950 | -34.5 C (-30.1 F) |
| 1951 | -34.5 C (-30.1 F) |
| 1952 | -31.0 C (-23.8 F) |
| 1953 | -34.0 C (-29.2 F) |
| 1954 | -36.5 C (-33.7 F) |
| 1955 | -36.5 C (-33.7 F) |
| 1956 | -35.0 C (-31.0 F) |
| 1957 | -30.5 C (-22.9 F) |
| 1958 | -37.0 C (-34.6 F) |
| 1959 | -32.0 C (-25.6 F) |
| 1960 | -36.0 C (-32.8 F) |
| 1961 | -31.8 C (-25.2 F) |
| 1962 | -36.5 C (-33.7 F) |
| 1963 | -36.5 C (-33.7 F) |
| 1964 | -30.0 C (-22.0 F) |
| 1965 | -38.5 C (-37.3 F) |
| 1966 | -41.5 C (-42.7 F) |
| 1967 | -39.0 C (-38.2 F) |
| 1968 | -35.0 C (-31.0 F) |
| 1969 | -39.5 C (-39.1 F) |
| 1970 | -39.0 C (-38.2 F) |
| 1971 | -36.5 C (-33.7 F) |
| 1972 | -30.0 C (-22.0 F) |
| 1973 | -32.0 C (-25.6 F) |
| 1974 | -24.0 C (-11.2 F) |
| 1975 | -32.0 C (-25.6 F) |
| 1976 | -36.0 C (-32.8 F) |
| 1977 | -33.1 C (-27.6 F) |
| 1978 | -42.5 C (-44.5 F) |
| 1979 | -46.0 C (-50.8 F) |
| 1980 | -38.6 C (-37.5 F) |
| 1981 | -40.5 C (-40.9 F) |
| 1982 | -40.4 C (-40.7 F) |
| 1983 | -30.9 C (-23.6 F) |
| 1984 | -36.3 C (-33.3 F) |
| 1985 | -39.6 C (-39.3 F) |
| 1986 | -38.7 C (-37.7 F) |
| 1987 | -43.5 C (-46.3 F) |
| 1988 | -29.0 C (-20.2 F) |
| 1989 | -33.0 C (-27.4 F) |
| 1990 | -25.0 C (-13.0 F) |
| 1991 | -32.0 C (-25.6 F) |
| 1992 | -26.5 C (-15.7 F) |
| 1993 | -34.0 C (-29.2 F) |
| 1994 | -34.0 C (-29.2 F) |
| 1995 | -32.0 C (-25.6 F) |
| 1996 | -35.5 C (-31.9 F) |
| 1997 | -33.5 C (-28.3 F) |
| 1998 | -28.5 C (-19.3 F) |
| 1999 | -34.5 C (-30.1 F) |
| 2000 | -27.0 C (-16.6 F) |
| 2001 | -38.0 C (-36.4 F) |
| 2002 | -37.4 C (-35.3 F) |
| 2003 | -36.0 C (-32.8 F) |
| 2004 | -34.9 C (-30.8 F) |
| 2005 | -32.9 C (-27.2 F) |
| 2006 | -28.3 C (-18.9 F) |
| 2007 | -26.5 C (-15.7 F) |
| 2008 | -25.7 C (-14.3 F) |
| 2009 | -32.7 C (-26.9 F) |
| 2010 | -36.9 C (-34.4 F) |
| 2011 | -35.0 C (-31.0 F) |
| 2012 | -36.0 C (-32.8 F) |
| 2013 | -31.1 C (-24.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1945 | 27.5 mm (1.1 in) |
| 1946 | 57.7 mm (2.3 in) |
| 1947 | 32.7 mm (1.3 in) |
| 1948 | 41.0 mm (1.6 in) |
| 1949 | 30.7 mm (1.2 in) |
| 1950 | 81.9 mm (3.2 in) |
| 1951 | 25.5 mm (1.0 in) |
| 1952 | 38.9 mm (1.5 in) |
| 1953 | 76.0 mm (3.0 in) |
| 1954 | 31.5 mm (1.2 in) |
| 1955 | 21.2 mm (0.8 in) |
| 1956 | 43.8 mm (1.7 in) |
| 1957 | 26.1 mm (1.0 in) |
| 1958 | 15.2 mm (0.6 in) |
| 1959 | 27.1 mm (1.1 in) |
| 1960 | 31.0 mm (1.2 in) |
| 1961 | 26.4 mm (1.0 in) |
| 1962 | 23.9 mm (0.9 in) |
| 1963 | 22.9 mm (0.9 in) |
| 1964 | 49.9 mm (2.0 in) |
| 1965 | 35.4 mm (1.4 in) |
| 1966 | 36.9 mm (1.5 in) |
| 1967 | 36.4 mm (1.4 in) |
| 1968 | 19.1 mm (0.8 in) |
| 1969 | 24.3 mm (1.0 in) |
| 1970 | 32.4 mm (1.3 in) |
| 1971 | 20.2 mm (0.8 in) |
| 1972 | 33.7 mm (1.3 in) |
| 1973 | 74.1 mm (2.9 in) |
| 1974 | 31.6 mm (1.2 in) |
| 1975 | 43.0 mm (1.7 in) |
| 1976 | 33.4 mm (1.3 in) |
| 1977 | 23.0 mm (0.9 in) |
| 1978 | 22.9 mm (0.9 in) |
| 1979 | 27.3 mm (1.1 in) |
| 1980 | 41.6 mm (1.6 in) |
| 1981 | 39.1 mm (1.5 in) |
| 1982 | 40.8 mm (1.6 in) |
| 1983 | 30.5 mm (1.2 in) |
| 1984 | 37.7 mm (1.5 in) |
| 1985 | 44.9 mm (1.8 in) |
| 1986 | 41.3 mm (1.6 in) |
| 1987 | 29.6 mm (1.2 in) |
| 1988 | 29.5 mm (1.2 in) |
| 1989 | 24.8 mm (1.0 in) |
| 1990 | 42.4 mm (1.7 in) |
| 1991 | 36.6 mm (1.4 in) |
| 1992 | 40.4 mm (1.6 in) |
| 1993 | 36.0 mm (1.4 in) |
| 1994 | 41.2 mm (1.6 in) |
| 1995 | 40.0 mm (1.6 in) |
| 1996 | 29.9 mm (1.2 in) |
| 1997 | 88.0 mm (3.5 in) |
| 1998 | 22.3 mm (0.9 in) |
| 1999 | 28.2 mm (1.1 in) |
| 2000 | 47.0 mm (1.9 in) |
| 2001 | 34.7 mm (1.4 in) |
| 2002 | 24.9 mm (1.0 in) |
| 2003 | 31.1 mm (1.2 in) |
| 2004 | 48.6 mm (1.9 in) |
| 2005 | 50.4 mm (2.0 in) |
| 2006 | 31.2 mm (1.2 in) |
| 2007 | 24.5 mm (1.0 in) |
| 2008 | 38.4 mm (1.5 in) |
| 2009 | 30.4 mm (1.2 in) |
| 2010 | 41.9 mm (1.6 in) |
| 2011 | 26.8 mm (1.1 in) |
| 2012 | 13.6 mm (0.5 in) |
| 2013 | 2.0 mm (0.08 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1945 | 49.5 mm (1.9 in) |
| 1946 | 86.9 mm (3.4 in) |
| 1947 | 47.0 mm (1.9 in) |
| 1948 | 87.0 mm (3.4 in) |
| 1949 | 60.1 mm (2.4 in) |
| 1950 | 148.8 mm (5.9 in) |
| 1951 | 60.0 mm (2.4 in) |
| 1952 | 60.1 mm (2.4 in) |
| 1953 | 113.3 mm (4.5 in) |
| 1954 | 63.0 mm (2.5 in) |
| 1955 | 38.8 mm (1.5 in) |
| 1956 | 61.5 mm (2.4 in) |
| 1957 | 63.6 mm (2.5 in) |
| 1958 | 35.5 mm (1.4 in) |
| 1959 | 62.3 mm (2.5 in) |
| 1960 | 62.8 mm (2.5 in) |
| 1961 | 60.8 mm (2.4 in) |
| 1962 | 58.7 mm (2.3 in) |
| 1963 | 55.1 mm (2.2 in) |
| 1964 | 76.9 mm (3.0 in) |
| 1965 | 79.8 mm (3.1 in) |
| 1966 | 78.2 mm (3.1 in) |
| 1967 | 62.4 mm (2.5 in) |
| 1968 | 50.9 mm (2.0 in) |
| 1969 | 49.4 mm (1.9 in) |
| 1970 | 81.7 mm (3.2 in) |
| 1971 | 40.6 mm (1.6 in) |
| 1972 | 71.3 mm (2.8 in) |
| 1973 | 101.4 mm (4.0 in) |
| 1974 | 40.4 mm (1.6 in) |
| 1975 | 58.4 mm (2.3 in) |
| 1976 | 74.7 mm (2.9 in) |
| 1977 | 49.8 mm (2.0 in) |
| 1978 | 36.6 mm (1.4 in) |
| 1979 | 54.8 mm (2.2 in) |
| 1980 | 65.8 mm (2.6 in) |
| 1981 | 76.5 mm (3.0 in) |
| 1982 | 52.1 mm (2.1 in) |
| 1983 | 70.3 mm (2.8 in) |
| 1984 | 77.6 mm (3.1 in) |
| 1985 | 93.2 mm (3.7 in) |
| 1986 | 64.9 mm (2.6 in) |
| 1987 | 70.0 mm (2.8 in) |
| 1988 | 68.1 mm (2.7 in) |
| 1989 | 66.9 mm (2.6 in) |
| 1990 | 67.4 mm (2.7 in) |
| 1991 | 80.0 mm (3.1 in) |
| 1992 | 67.6 mm (2.7 in) |
| 1993 | 75.7 mm (3.0 in) |
| 1994 | 57.1 mm (2.2 in) |
| 1995 | 74.5 mm (2.9 in) |
| 1996 | 61.0 mm (2.4 in) |
| 1997 | 110.9 mm (4.4 in) |
| 1998 | 58.8 mm (2.3 in) |
| 1999 | 53.6 mm (2.1 in) |
| 2000 | 89.3 mm (3.5 in) |
| 2001 | 70.0 mm (2.8 in) |
| 2002 | 53.5 mm (2.1 in) |
| 2003 | 59.4 mm (2.3 in) |
| 2004 | 58.4 mm (2.3 in) |
| 2005 | 81.0 mm (3.2 in) |
| 2006 | 68.0 mm (2.7 in) |
| 2007 | 47.7 mm (1.9 in) |
| 2008 | 66.1 mm (2.6 in) |
| 2009 | 58.7 mm (2.3 in) |
| 2010 | 81.7 mm (3.2 in) |
| 2011 | 54.1 mm (2.1 in) |
| 2012 | 40.9 mm (1.6 in) |
| 2013 | 4.9 mm (0.19 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1945 | 23 days |
| 1946 | 19 days |
| 1947 | 40 days |
| 1948 | 28 days |
| 1949 | 15 days |
| 1950 | 14 days |
| 1951 | 21 days |
| 1952 | 18 days |
| 1953 | 34 days |
| 1954 | 19 days |
| 1955 | 23 days |
| 1956 | 22 days |
| 1957 | 17 days |
| 1958 | 15 days |
| 1959 | 30 days |
| 1960 | 21 days |
| 1961 | 16 days |
| 1962 | 22 days |
| 1963 | 21 days |
| 1964 | 36 days |
| 1965 | 15 days |
| 1966 | 17 days |
| 1967 | 14 days |
| 1968 | 23 days |
| 1969 | 23 days |
| 1970 | 23 days |
| 1971 | 22 days |
| 1972 | 18 days |
| 1973 | 17 days |
| 1974 | 22 days |
| 1975 | 17 days |
| 1976 | 26 days |
| 1977 | 15 days |
| 1978 | 17 days |
| 1979 | 16 days |
| 1980 | 23 days |
| 1981 | 37 days |
| 1982 | 21 days |
| 1983 | 28 days |
| 1984 | 17 days |
| 1985 | 16 days |
| 1986 | 24 days |
| 1987 | 29 days |
| 1988 | 17 days |
| 1989 | 16 days |
| 1990 | 19 days |
| 1991 | 20 days |
| 1992 | 16 days |
| 1993 | 22 days |
| 1994 | 27 days |
| 1995 | 18 days |
| 1996 | 19 days |
| 1997 | 24 days |
| 1998 | 14 days |
| 1999 | 19 days |
| 2000 | 19 days |
| 2001 | 15 days |
| 2002 | 19 days |
| 2003 | 20 days |
| 2004 | 14 days |
| 2005 | 20 days |
| 2006 | 19 days |
| 2007 | 20 days |
| 2008 | 21 days |
| 2009 | 19 days |
| 2010 | 21 days |
| 2011 | 13 days |
| 2012 | 20 days |
| 2013 | 14 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
67 years with a frostAcross 67 years with a frost, the median last spring frost at Grundforsen falls on 20 June and the median first autumn frost on 20 July, which leaves a median of 31 days between them.
In 1982 to 2011 the median growing season was 40 days. That is 10 days more than in 1945 to 1974.
Fitted over all years, the growing season changes by +3.4 days per decade at this station.
| Measure | Median, all years | Earliest period (1945 to 1974) | Recent period (1982 to 2011) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 20 June | 21 June | 17 June | 4 days earlier | -0.8 days per decade |
| First autumn frost | 20 July | 17 July | 24 July | 7 days later | +2.6 days per decade |
| Growing days | 31 days | 30 days | 40 days | 10 days more | +3.4 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
65 years, 1945 to 2011A day with at least 32.8 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 90.4 mm (3.6 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 32.8 mm (1.3 in) | |
| 5 years | 43.9 mm (1.7 in) | |
| 10 years | 52.7 mm (2.1 in) | |
| 25 years | 65.9 mm (2.6 in) | |
| 50 years | 77.3 mm (3.0 in) | |
| 100 years | 90.4 mm (3.6 in) | Longer than the 65 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, 65 years of values from 1945 to 2011.
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: 88.0 mm (3.5 in) in 1997; 81.9 mm (3.2 in) in 1950; 76.0 mm (3.0 in) in 1953.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Grundforsen, at 2004. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2004 ran 0.3 C (0.5 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2004 | +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.
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 (2025-12-31).