Castana Exp Farm Weather Records (USC00131277)
Record envelope, standing records and threshold days for Castana Exp Farm (USC00131277), Iowa, United States, with 70 years of record.
Key Facts for Castana Exp Farm
- Castana Exp Farm (USC00131277) is a weather station in Iowa, United States at 42.06 latitude and -95.84 longitude, 427 m (1,400 ft) above sea level.
- The station reports from 1948 to 2017, 70 years of record.
- 1,464 records set at Castana Exp Farm still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Castana Exp Farm tied a daily record low maximum temperature of -18.9 C (-2.0 F) on 31 December 2017.
About the Station
- Location: Iowa, United States, 42.06 latitude, -95.84 longitude.
- Elevation: 427 m (1,400 ft).
- Period of record: 1948 to 2017, 70 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
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 | 19.4 C (66.9 F) | -32.8 C (-27.0 F) | n/a | n/a |
| Feb | 21.7 C (71.1 F) | -32.2 C (-26.0 F) | n/a | n/a |
| Mar | 30.6 C (87.1 F) | -30.6 C (-23.1 F) | n/a | n/a |
| Apr | 34.4 C (93.9 F) | -15.6 C (3.9 F) | n/a | n/a |
| May | 38.3 C (100.9 F) | -4.4 C (24.1 F) | n/a | n/a |
| Jun | 40.0 C (104.0 F) | 3.3 C (37.9 F) | n/a | n/a |
| Jul | 40.0 C (104.0 F) | 6.7 C (44.1 F) | n/a | n/a |
| Aug | 40.0 C (104.0 F) | 3.3 C (37.9 F) | n/a | n/a |
| Sep | 38.3 C (100.9 F) | -4.4 C (24.1 F) | n/a | n/a |
| Oct | 33.3 C (91.9 F) | -11.1 C (12.0 F) | n/a | n/a |
| Nov | 27.2 C (81.0 F) | -22.8 C (-9.0 F) | n/a | n/a |
| Dec | 20.0 C (68.0 F) | -32.2 C (-26.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1948 | 16 |
| 1949 | 16 |
| 1950 | 32 |
| 1951 | 28 |
| 1952 | 14 |
| 1953 | 23 |
| 1954 | 16 |
| 1955 | 49 |
| 1956 | 19 |
| 1957 | 15 |
| 1958 | 16 |
| 1959 | 23 |
| 1960 | 21 |
| 1961 | 11 |
| 1962 | 32 |
| 1963 | 26 |
| 1964 | 25 |
| 1965 | 21 |
| 1966 | 25 |
| 1967 | 40 |
| 1968 | 27 |
| 1969 | 20 |
| 1970 | 23 |
| 1971 | 16 |
| 1972 | 29 |
| 1973 | 8 |
| 1974 | 27 |
| 1975 | 25 |
| 1976 | 26 |
| 1977 | 27 |
| 1978 | 16 |
| 1979 | 20 |
| 1980 | 21 |
| 1981 | 26 |
| 1982 | 9 |
| 1983 | 31 |
| 1984 | 17 |
| 1985 | 25 |
| 1986 | 18 |
| 1987 | 20 |
| 1988 | 30 |
| 1989 | 33 |
| 1990 | 25 |
| 1991 | 30 |
| 1992 | 25 |
| 1993 | 12 |
| 1994 | 16 |
| 1995 | 7 |
| 1996 | 14 |
| 1997 | 23 |
| 1998 | 17 |
| 1999 | 17 |
| 2000 | 25 |
| 2001 | 20 |
| 2002 | 21 |
| 2003 | 13 |
| 2004 | 21 |
| 2005 | 14 |
| 2006 | 17 |
| 2007 | 10 |
| 2008 | 14 |
| 2009 | 17 |
| 2010 | 15 |
| 2011 | 13 |
| 2012 | 30 |
| 2013 | 15 |
| 2014 | 25 |
| 2015 | 11 |
| 2016 | 11 |
| 2017 | 24 |
All-Time Record Progression
9 new records| Date | Kind | Detail |
|---|---|---|
| 1978-09-13 | Record daily precipitation | Record daily precipitation 137.4 mm (5.4 in) |
| 1979-01-27 | Record snow depth | Record snow depth 63.5 cm (25.0 in) |
| 1979-03-04 | Record snow depth | Record snow depth 66.0 cm (26.0 in) |
| 1983-12-23 | Record low maximum temperature | Record low maximum temperature -24.4 C (-11.9 F) |
| 1983-12-24 | Record low maximum temperature | Record low maximum temperature -25.6 C (-14.1 F) |
| 1993-07-09 | Record daily precipitation | Record daily precipitation 143.8 mm (5.7 in) |
| 1996-07-17 | Record daily precipitation | Record daily precipitation 305.3 mm (12.0 in) |
| 2007-03-02 | Record daily snowfall | Record daily snowfall 30.5 cm (12.0 in) |
| 2010-01-07 | Record snow depth | Record snow depth 71.1 cm (28.0 in) |
Wettest Day of Each Month
Jul: 305.3 mm (12.0 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 29.5 mm (1.2 in) | 3 January 1949 |
| Feb | 41.7 mm (1.6 in) | 20 February 1954 |
| Mar | 57.9 mm (2.3 in) | 23 March 1987 |
| Apr | 96.5 mm (3.8 in) | 27 April 1986 |
| May | 101.1 mm (4.0 in) | 27 May 2014 |
| Jun | 92.2 mm (3.6 in) | 16 June 1984 |
| Jul | 305.3 mm (12.0 in) | 17 July 1996 |
| Aug | 97.8 mm (3.9 in) | 5 August 1996 |
| Sep | 137.4 mm (5.4 in) | 13 September 1978 |
| Oct | 94.2 mm (3.7 in) | 9 October 1970 |
| Nov | 54.6 mm (2.1 in) | 30 November 1991 |
| Dec | 50.3 mm (2.0 in) | 14 December 2015 |
Period of Record Coverage
1948 to 2017| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1948 | 183 | 50% | No |
| 1949 | 361 | 99% | Yes |
| 1950 | 349 | 96% | Yes |
| 1951 | 356 | 98% | Yes |
| 1952 | 359 | 98% | Yes |
| 1953 | 357 | 98% | 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 | 364 | 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 | 364 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 365 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 363 | 99% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 364 | 100% | Yes |
| 1982 | 362 | 99% | Yes |
| 1983 | 364 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 364 | 100% | Yes |
| 1986 | 364 | 100% | Yes |
| 1987 | 358 | 98% | Yes |
| 1988 | 364 | 99% | Yes |
| 1989 | 363 | 99% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 362 | 99% | Yes |
| 1992 | 364 | 99% | Yes |
| 1993 | 355 | 97% | Yes |
| 1994 | 360 | 99% | Yes |
| 1995 | 297 | 81% | No |
| 1996 | 355 | 97% | Yes |
| 1997 | 353 | 97% | Yes |
| 1998 | 358 | 98% | Yes |
| 1999 | 357 | 98% | Yes |
| 2000 | 350 | 96% | Yes |
| 2001 | 361 | 99% | Yes |
| 2002 | 357 | 98% | Yes |
| 2003 | 353 | 97% | Yes |
| 2004 | 361 | 99% | Yes |
| 2005 | 358 | 98% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 362 | 99% | Yes |
| 2008 | 364 | 99% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 361 | 99% | Yes |
| 2011 | 364 | 100% | Yes |
| 2012 | 365 | 100% | Yes |
| 2013 | 364 | 100% | Yes |
| 2014 | 364 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 364 | 99% | Yes |
| 2017 | 305 | 84% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 31 December 2017 | Castana Exp Farm, US | daily low max (Tie) | -18.9 C (-2.0 F) | tie | 48 years | 5 of 100 (Routine) |
| 28 December 2017 | Castana Exp Farm, US | daily low max | -13.9 C (7.0 F) | 3.9 C (7.0 F) | 56 years | 28 of 100 (Routine) |
| 28 December 2017 | Castana Exp Farm, US | daily low min | -23.9 C (-11.0 F) | 3.9 C (7.0 F) | 56 years | 28 of 100 (Routine) |
| 27 December 2017 | Castana Exp Farm, US | daily low min | -23.9 C (-11.0 F) | 2.2 C (4.0 F) | 66 years | 29 of 100 (Routine) |
| 27 December 2017 | Castana Exp Farm, US | daily low max | -16.1 C (3.0 F) | 3.9 C (7.0 F) | 7 years | 14 of 100 (Routine) |
| 4 December 2017 | Castana Exp Farm, US | daily high max | 15.0 C (59.0 F) | 0.6 C (1.1 F) | 38 years | 18 of 100 (Routine) |
| 4 December 2017 | Castana Exp Farm, US | daily high min | 5.6 C (42.1 F) | 1.2 C (2.2 F) | 19 years | 13 of 100 (Routine) |
| 28 November 2017 | Castana Exp Farm, US | daily high max | 18.3 C (64.9 F) | 2.7 C (4.9 F) | 19 years | 15 of 100 (Routine) |
| 26 November 2017 | Castana Exp Farm, US | daily high max | 18.9 C (66.0 F) | 2.2 C (4.0 F) | 19 years | 15 of 100 (Routine) |
| 24 November 2017 | Castana Exp Farm, US | daily high min (Tie) | 5.6 C (42.1 F) | tie | 16 years | 2 of 100 (Routine) |
| 25 September 2017 | Castana Exp Farm, US | daily rain | 30.7 mm (1.2 in) | 10.1 mm (0.4 in) | 0 years | 14 of 100 (Routine) |
| 24 September 2017 | Castana Exp Farm, US | daily high min | 19.4 C (66.9 F) | 0.5 C (0.9 F) | 0 years | 8 of 100 (Routine) |
| 24 September 2017 | Castana Exp Farm, US | daily high max (Tie) | 31.1 C (88.0 F) | tie | 0 years | 1 of 100 (Routine) |
| 23 September 2017 | Castana Exp Farm, US | daily high min | 19.4 C (66.9 F) | 0.5 C (0.9 F) | 59 years | 25 of 100 (Routine) |
| 23 September 2017 | Castana Exp Farm, US | daily high max | 32.8 C (91.0 F) | 2.2 C (4.0 F) | 40 years | 23 of 100 (Routine) |
| 16 August 2017 | Castana Exp Farm, US | daily rain | 52.3 mm (2.1 in) | 10.1 mm (0.4 in) | 36 years | 24 of 100 (Routine) |
| 6 August 2017 | Castana Exp Farm, US | daily low max | 18.9 C (66.0 F) | 1.7 C (3.1 F) | 68 years | 31 of 100 (Routine) |
| 28 June 2017 | Castana Exp Farm, US | daily low min | 9.4 C (48.9 F) | 0.6 C (1.1 F) | 66 years | 27 of 100 (Routine) |
| 4 June 2017 | Castana Exp Farm, US | daily high min (Tie) | 21.1 C (70.0 F) | tie | 59 years | 6 of 100 (Routine) |
| 3 June 2017 | Castana Exp Farm, US | daily high min | 20.0 C (68.0 F) | 0.6 C (1.1 F) | 6 years | 9 of 100 (Routine) |
Climate Trend
65 complete years, 1949 to 2016| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1949 | 9.3 C | 0.00 C |
| 1950 | 7.4 C | -1.87 C |
| 1951 | 7.2 C | -2.03 C |
| 1952 | 9.2 C | -0.04 C |
| 1953 | 10.1 C | +0.81 C |
| 1954 | 9.9 C | +0.69 C |
| 1955 | 9.4 C | +0.17 C |
| 1956 | 9.7 C | +0.43 C |
| 1957 | 9.2 C | -0.07 C |
| 1958 | 9.0 C | -0.24 C |
| 1959 | 8.8 C | -0.41 C |
| 1960 | 8.1 C | -1.14 C |
| 1961 | 8.7 C | -0.58 C |
| 1962 | 8.9 C | -0.33 C |
| 1963 | 9.7 C | +0.48 C |
| 1964 | 9.7 C | +0.44 C |
| 1965 | 8.8 C | -0.41 C |
| 1966 | 8.8 C | -0.48 C |
| 1967 | 9.1 C | -0.16 C |
| 1968 | 9.3 C | 0.00 C |
| 1969 | 8.3 C | -0.93 C |
| 1970 | 9.1 C | -0.14 C |
| 1971 | 9.2 C | -0.03 C |
| 1972 | 8.3 C | -1.00 C |
| 1973 | 9.9 C | +0.63 C |
| 1974 | 9.7 C | +0.46 C |
| 1975 | 8.8 C | -0.41 C |
| 1976 | 9.6 C | +0.39 C |
| 1977 | 9.6 C | +0.33 C |
| 1978 | 7.7 C | -1.58 C |
| 1980 | 9.8 C | +0.58 C |
| 1981 | 10.3 C | +1.08 C |
| 1982 | 8.3 C | -0.96 C |
| 1983 | 8.8 C | -0.41 C |
| 1984 | 9.2 C | -0.03 C |
| 1985 | 8.3 C | -1.00 C |
| 1986 | 10.0 C | +0.73 C |
| 1987 | 11.3 C | +2.02 C |
| 1988 | 10.4 C | +1.11 C |
| 1989 | 9.4 C | +0.11 C |
| 1990 | 10.7 C | +1.46 C |
| 1991 | 10.3 C | +1.05 C |
| 1992 | 10.0 C | +0.78 C |
| 1993 | 8.3 C | -0.99 C |
| 1994 | 9.7 C | +0.42 C |
| 1996 | 8.3 C | -0.97 C |
| 1997 | 9.6 C | +0.39 C |
| 1998 | 11.2 C | +1.94 C |
| 1999 | 11.0 C | +1.73 C |
| 2001 | 9.8 C | +0.50 C |
| 2002 | 9.3 C | +0.04 C |
| 2003 | 8.9 C | -0.40 C |
| 2004 | 9.0 C | -0.22 C |
| 2005 | 9.6 C | +0.37 C |
| 2006 | 10.2 C | +0.91 C |
| 2007 | 9.4 C | +0.18 C |
| 2008 | 7.7 C | -1.58 C |
| 2009 | 8.0 C | -1.27 C |
| 2010 | 8.7 C | -0.56 C |
| 2011 | 8.7 C | -0.51 C |
| 2012 | 11.3 C | +2.00 C |
| 2013 | 8.0 C | -1.23 C |
| 2014 | 7.9 C | -1.38 C |
| 2015 | 9.6 C | +0.36 C |
| 2016 | 10.3 C | +1.07 C |
The fitted trend in annual mean temperature here over 1949 to 2016 is 0.07 C (-0.04 to 0.19) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.3) per decade. The slope is a straight line fitted to 65 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.07 C (-0.04 to 0.19) per decade | 0.1 F (-0.1 to 0.3) per decade | 1949 to 2016 | 65 | Not clearly different from zero |
| Mean daily maximum | 0.05 C (-0.09 to 0.18) per decade | 0.1 F (-0.2 to 0.3) per decade | 1949 to 2016 | 65 | Not clearly different from zero |
| Mean daily minimum | 0.10 C (-0.01 to 0.21) per decade | 0.18 F (-0.02 to 0.37) per decade | 1949 to 2016 | 65 | Not clearly different from zero |
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 2017| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 40.0 C (104.0 F) | 1955 | 35.6 C (96.1 F) | 70 |
| Coldest night (TNn) | -32.8 C (-27.0 F) | 1970 | -27.2 C (-17.0 F) | 70 |
| Wettest day (Rx1day) | 305.3 mm (12.0 in) | 1996 | 62.7 mm (2.5 in) | 70 |
| Wettest five days (Rx5day) | 307.8 mm (12.1 in) | 1996 | 93.2 mm (3.7 in) | 70 |
| Longest dry spell (CDD) | 63 days | 1967 | 29 days | 70 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1948 | 36.7 C (98.1 F) |
| 1949 | 34.4 C (93.9 F) |
| 1950 | 36.7 C (98.1 F) |
| 1951 | 32.8 C (91.0 F) |
| 1952 | 35.6 C (96.1 F) |
| 1953 | 37.2 C (99.0 F) |
| 1954 | 37.2 C (99.0 F) |
| 1955 | 40.0 C (104.0 F) |
| 1956 | 37.2 C (99.0 F) |
| 1957 | 37.2 C (99.0 F) |
| 1958 | 33.9 C (93.0 F) |
| 1959 | 34.4 C (93.9 F) |
| 1960 | 33.9 C (93.0 F) |
| 1961 | 35.6 C (96.1 F) |
| 1962 | 33.3 C (91.9 F) |
| 1963 | 35.0 C (95.0 F) |
| 1964 | 37.2 C (99.0 F) |
| 1965 | 34.4 C (93.9 F) |
| 1966 | 35.6 C (96.1 F) |
| 1967 | 38.3 C (100.9 F) |
| 1968 | 35.0 C (95.0 F) |
| 1969 | 35.0 C (95.0 F) |
| 1970 | 36.1 C (97.0 F) |
| 1971 | 36.7 C (98.1 F) |
| 1972 | 34.4 C (93.9 F) |
| 1973 | 33.9 C (93.0 F) |
| 1974 | 38.3 C (100.9 F) |
| 1975 | 35.0 C (95.0 F) |
| 1976 | 37.2 C (99.0 F) |
| 1977 | 36.1 C (97.0 F) |
| 1978 | 35.0 C (95.0 F) |
| 1979 | 36.1 C (97.0 F) |
| 1980 | 38.3 C (100.9 F) |
| 1981 | 36.1 C (97.0 F) |
| 1982 | 34.4 C (93.9 F) |
| 1983 | 38.3 C (100.9 F) |
| 1984 | 36.1 C (97.0 F) |
| 1985 | 37.8 C (100.0 F) |
| 1986 | 33.9 C (93.0 F) |
| 1987 | 36.1 C (97.0 F) |
| 1988 | 40.0 C (104.0 F) |
| 1989 | 36.7 C (98.1 F) |
| 1990 | 36.7 C (98.1 F) |
| 1991 | 33.9 C (93.0 F) |
| 1992 | 31.1 C (88.0 F) |
| 1993 | 32.2 C (90.0 F) |
| 1994 | 32.8 C (91.0 F) |
| 1995 | 37.8 C (100.0 F) |
| 1996 | 34.4 C (93.9 F) |
| 1997 | 35.0 C (95.0 F) |
| 1998 | 35.0 C (95.0 F) |
| 1999 | 35.0 C (95.0 F) |
| 2000 | 38.3 C (100.9 F) |
| 2001 | 34.4 C (93.9 F) |
| 2002 | 37.2 C (99.0 F) |
| 2003 | 37.2 C (99.0 F) |
| 2004 | 33.3 C (91.9 F) |
| 2005 | 36.7 C (98.1 F) |
| 2006 | 40.0 C (104.0 F) |
| 2007 | 35.6 C (96.1 F) |
| 2008 | 35.0 C (95.0 F) |
| 2009 | 32.8 C (91.0 F) |
| 2010 | 33.9 C (93.0 F) |
| 2011 | 34.4 C (93.9 F) |
| 2012 | 38.9 C (102.0 F) |
| 2013 | 38.3 C (100.9 F) |
| 2014 | 33.3 C (91.9 F) |
| 2015 | 35.0 C (95.0 F) |
| 2016 | 34.4 C (93.9 F) |
| 2017 | 35.0 C (95.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1948 | -23.3 C (-9.9 F) |
| 1949 | -25.6 C (-14.1 F) |
| 1950 | -28.3 C (-18.9 F) |
| 1951 | -27.2 C (-17.0 F) |
| 1952 | -24.4 C (-11.9 F) |
| 1953 | -29.4 C (-20.9 F) |
| 1954 | -28.9 C (-20.0 F) |
| 1955 | -27.2 C (-17.0 F) |
| 1956 | -26.7 C (-16.1 F) |
| 1957 | -27.2 C (-17.0 F) |
| 1958 | -27.8 C (-18.0 F) |
| 1959 | -27.2 C (-17.0 F) |
| 1960 | -30.6 C (-23.1 F) |
| 1961 | -27.8 C (-18.0 F) |
| 1962 | -27.8 C (-18.0 F) |
| 1963 | -29.4 C (-20.9 F) |
| 1964 | -25.6 C (-14.1 F) |
| 1965 | -27.2 C (-17.0 F) |
| 1966 | -31.7 C (-25.1 F) |
| 1967 | -28.3 C (-18.9 F) |
| 1968 | -30.0 C (-22.0 F) |
| 1969 | -28.3 C (-18.9 F) |
| 1970 | -32.8 C (-27.0 F) |
| 1971 | -26.7 C (-16.1 F) |
| 1972 | -30.0 C (-22.0 F) |
| 1973 | -26.1 C (-15.0 F) |
| 1974 | -30.6 C (-23.1 F) |
| 1975 | -28.3 C (-18.9 F) |
| 1976 | -28.3 C (-18.9 F) |
| 1977 | -30.0 C (-22.0 F) |
| 1978 | -27.8 C (-18.0 F) |
| 1979 | -28.9 C (-20.0 F) |
| 1980 | -25.0 C (-13.0 F) |
| 1981 | -30.6 C (-23.1 F) |
| 1982 | -31.1 C (-24.0 F) |
| 1983 | -30.6 C (-23.1 F) |
| 1984 | -26.7 C (-16.1 F) |
| 1985 | -29.4 C (-20.9 F) |
| 1986 | -26.1 C (-15.0 F) |
| 1987 | -25.6 C (-14.1 F) |
| 1988 | -30.0 C (-22.0 F) |
| 1989 | -32.2 C (-26.0 F) |
| 1990 | -27.8 C (-18.0 F) |
| 1991 | -22.8 C (-9.0 F) |
| 1992 | -23.9 C (-11.0 F) |
| 1993 | -25.6 C (-14.1 F) |
| 1994 | -28.3 C (-18.9 F) |
| 1995 | -23.3 C (-9.9 F) |
| 1996 | -32.2 C (-26.0 F) |
| 1997 | -26.1 C (-15.0 F) |
| 1998 | -23.3 C (-9.9 F) |
| 1999 | -26.1 C (-15.0 F) |
| 2000 | -25.6 C (-14.1 F) |
| 2001 | -26.1 C (-15.0 F) |
| 2002 | -21.7 C (-7.1 F) |
| 2003 | -25.0 C (-13.0 F) |
| 2004 | -25.0 C (-13.0 F) |
| 2005 | -23.9 C (-11.0 F) |
| 2006 | -23.9 C (-11.0 F) |
| 2007 | -24.4 C (-11.9 F) |
| 2008 | -26.7 C (-16.1 F) |
| 2009 | -29.4 C (-20.9 F) |
| 2010 | -28.9 C (-20.0 F) |
| 2011 | -27.2 C (-17.0 F) |
| 2012 | -19.4 C (-2.9 F) |
| 2013 | -22.8 C (-9.0 F) |
| 2014 | -26.1 C (-15.0 F) |
| 2015 | -23.9 C (-11.0 F) |
| 2016 | -27.8 C (-18.0 F) |
| 2017 | -25.0 C (-13.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1948 | 52.6 mm (2.1 in) |
| 1949 | 64.0 mm (2.5 in) |
| 1950 | 53.6 mm (2.1 in) |
| 1951 | 78.2 mm (3.1 in) |
| 1952 | 61.7 mm (2.4 in) |
| 1953 | 55.9 mm (2.2 in) |
| 1954 | 74.2 mm (2.9 in) |
| 1955 | 35.1 mm (1.4 in) |
| 1956 | 52.3 mm (2.1 in) |
| 1957 | 60.5 mm (2.4 in) |
| 1958 | 108.7 mm (4.3 in) |
| 1959 | 49.0 mm (1.9 in) |
| 1960 | 67.1 mm (2.6 in) |
| 1961 | 51.8 mm (2.0 in) |
| 1962 | 96.3 mm (3.8 in) |
| 1963 | 72.6 mm (2.9 in) |
| 1964 | 48.0 mm (1.9 in) |
| 1965 | 36.8 mm (1.4 in) |
| 1966 | 58.4 mm (2.3 in) |
| 1967 | 65.5 mm (2.6 in) |
| 1968 | 80.3 mm (3.2 in) |
| 1969 | 44.7 mm (1.8 in) |
| 1970 | 94.2 mm (3.7 in) |
| 1971 | 34.3 mm (1.4 in) |
| 1972 | 53.8 mm (2.1 in) |
| 1973 | 66.5 mm (2.6 in) |
| 1974 | 70.4 mm (2.8 in) |
| 1975 | 74.2 mm (2.9 in) |
| 1976 | 66.8 mm (2.6 in) |
| 1977 | 74.7 mm (2.9 in) |
| 1978 | 137.4 mm (5.4 in) |
| 1979 | 54.4 mm (2.1 in) |
| 1980 | 61.0 mm (2.4 in) |
| 1981 | 62.0 mm (2.4 in) |
| 1982 | 79.0 mm (3.1 in) |
| 1983 | 50.5 mm (2.0 in) |
| 1984 | 92.2 mm (3.6 in) |
| 1985 | 50.8 mm (2.0 in) |
| 1986 | 96.5 mm (3.8 in) |
| 1987 | 71.6 mm (2.8 in) |
| 1988 | 63.2 mm (2.5 in) |
| 1989 | 101.6 mm (4.0 in) |
| 1990 | 57.7 mm (2.3 in) |
| 1991 | 58.4 mm (2.3 in) |
| 1992 | 69.3 mm (2.7 in) |
| 1993 | 143.8 mm (5.7 in) |
| 1994 | 66.8 mm (2.6 in) |
| 1995 | 112.3 mm (4.4 in) |
| 1996 | 305.3 mm (12.0 in) |
| 1997 | 38.6 mm (1.5 in) |
| 1998 | 64.0 mm (2.5 in) |
| 1999 | 67.1 mm (2.6 in) |
| 2000 | 64.0 mm (2.5 in) |
| 2001 | 62.2 mm (2.4 in) |
| 2002 | 53.3 mm (2.1 in) |
| 2003 | 37.8 mm (1.5 in) |
| 2004 | 53.3 mm (2.1 in) |
| 2005 | 47.0 mm (1.9 in) |
| 2006 | 56.9 mm (2.2 in) |
| 2007 | 81.3 mm (3.2 in) |
| 2008 | 65.3 mm (2.6 in) |
| 2009 | 59.2 mm (2.3 in) |
| 2010 | 71.9 mm (2.8 in) |
| 2011 | 38.1 mm (1.5 in) |
| 2012 | 42.2 mm (1.7 in) |
| 2013 | 55.9 mm (2.2 in) |
| 2014 | 101.1 mm (4.0 in) |
| 2015 | 60.2 mm (2.4 in) |
| 2016 | 65.5 mm (2.6 in) |
| 2017 | 52.3 mm (2.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1948 | 102.6 mm (4.0 in) |
| 1949 | 64.0 mm (2.5 in) |
| 1950 | 99.6 mm (3.9 in) |
| 1951 | 124.7 mm (4.9 in) |
| 1952 | 76.2 mm (3.0 in) |
| 1953 | 63.8 mm (2.5 in) |
| 1954 | 95.5 mm (3.8 in) |
| 1955 | 46.0 mm (1.8 in) |
| 1956 | 78.7 mm (3.1 in) |
| 1957 | 76.8 mm (3.0 in) |
| 1958 | 116.3 mm (4.6 in) |
| 1959 | 83.1 mm (3.3 in) |
| 1960 | 127.2 mm (5.0 in) |
| 1961 | 70.4 mm (2.8 in) |
| 1962 | 149.3 mm (5.9 in) |
| 1963 | 156.2 mm (6.1 in) |
| 1964 | 90.7 mm (3.6 in) |
| 1965 | 95.3 mm (3.8 in) |
| 1966 | 83.0 mm (3.3 in) |
| 1967 | 136.3 mm (5.4 in) |
| 1968 | 134.7 mm (5.3 in) |
| 1969 | 73.1 mm (2.9 in) |
| 1970 | 103.3 mm (4.1 in) |
| 1971 | 87.7 mm (3.5 in) |
| 1972 | 99.5 mm (3.9 in) |
| 1973 | 106.6 mm (4.2 in) |
| 1974 | 148.2 mm (5.8 in) |
| 1975 | 89.0 mm (3.5 in) |
| 1976 | 92.2 mm (3.6 in) |
| 1977 | 86.9 mm (3.4 in) |
| 1978 | 178.6 mm (7.0 in) |
| 1979 | 80.1 mm (3.2 in) |
| 1980 | 73.4 mm (2.9 in) |
| 1981 | 93.8 mm (3.7 in) |
| 1982 | 98.0 mm (3.9 in) |
| 1983 | 102.0 mm (4.0 in) |
| 1984 | 144.5 mm (5.7 in) |
| 1985 | 70.1 mm (2.8 in) |
| 1986 | 147.4 mm (5.8 in) |
| 1987 | 96.3 mm (3.8 in) |
| 1988 | 83.8 mm (3.3 in) |
| 1989 | 103.2 mm (4.1 in) |
| 1990 | 168.7 mm (6.6 in) |
| 1991 | 86.9 mm (3.4 in) |
| 1992 | 129.8 mm (5.1 in) |
| 1993 | 192.3 mm (7.6 in) |
| 1994 | 103.1 mm (4.1 in) |
| 1995 | 114.3 mm (4.5 in) |
| 1996 | 307.8 mm (12.1 in) |
| 1997 | 66.5 mm (2.6 in) |
| 1998 | 86.9 mm (3.4 in) |
| 1999 | 69.9 mm (2.8 in) |
| 2000 | 106.4 mm (4.2 in) |
| 2001 | 121.3 mm (4.8 in) |
| 2002 | 78.8 mm (3.1 in) |
| 2003 | 72.7 mm (2.9 in) |
| 2004 | 67.6 mm (2.7 in) |
| 2005 | 86.8 mm (3.4 in) |
| 2006 | 70.4 mm (2.8 in) |
| 2007 | 132.2 mm (5.2 in) |
| 2008 | 91.5 mm (3.6 in) |
| 2009 | 87.9 mm (3.5 in) |
| 2010 | 131.3 mm (5.2 in) |
| 2011 | 59.2 mm (2.3 in) |
| 2012 | 69.4 mm (2.7 in) |
| 2013 | 83.6 mm (3.3 in) |
| 2014 | 135.4 mm (5.3 in) |
| 2015 | 92.5 mm (3.6 in) |
| 2016 | 84.6 mm (3.3 in) |
| 2017 | 116.4 mm (4.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1948 | 18 days |
| 1949 | 33 days |
| 1950 | 31 days |
| 1951 | 19 days |
| 1952 | 47 days |
| 1953 | 27 days |
| 1954 | 25 days |
| 1955 | 29 days |
| 1956 | 28 days |
| 1957 | 41 days |
| 1958 | 31 days |
| 1959 | 20 days |
| 1960 | 29 days |
| 1961 | 30 days |
| 1962 | 47 days |
| 1963 | 29 days |
| 1964 | 21 days |
| 1965 | 23 days |
| 1966 | 26 days |
| 1967 | 63 days |
| 1968 | 21 days |
| 1969 | 32 days |
| 1970 | 43 days |
| 1971 | 31 days |
| 1972 | 22 days |
| 1973 | 21 days |
| 1974 | 29 days |
| 1975 | 25 days |
| 1976 | 46 days |
| 1977 | 25 days |
| 1978 | 20 days |
| 1979 | 29 days |
| 1980 | 33 days |
| 1981 | 30 days |
| 1982 | 16 days |
| 1983 | 21 days |
| 1984 | 16 days |
| 1985 | 24 days |
| 1986 | 34 days |
| 1987 | 21 days |
| 1988 | 51 days |
| 1989 | 28 days |
| 1990 | 20 days |
| 1991 | 23 days |
| 1992 | 22 days |
| 1993 | 22 days |
| 1994 | 45 days |
| 1995 | 26 days |
| 1996 | 31 days |
| 1997 | 20 days |
| 1998 | 39 days |
| 1999 | 45 days |
| 2000 | 18 days |
| 2001 | 31 days |
| 2002 | 30 days |
| 2003 | 29 days |
| 2004 | 24 days |
| 2005 | 31 days |
| 2006 | 28 days |
| 2007 | 30 days |
| 2008 | 14 days |
| 2009 | 18 days |
| 2010 | 29 days |
| 2011 | 30 days |
| 2012 | 24 days |
| 2013 | 27 days |
| 2014 | 46 days |
| 2015 | 26 days |
| 2016 | 36 days |
| 2017 | 32 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
65 years with a frostAcross 65 years with a frost, the median last spring frost at Castana Exp Farm falls on 29 April and the median first autumn frost on 7 October, which leaves a median of 164 days between them.
In 1985 to 2016 the median growing season was 170 days. That is 11 days more than in 1949 to 1978.
Fitted over all years, the growing season changes by +1.9 days per decade at this station.
| Measure | Median, all years | Earliest period (1949 to 1978) | Recent period (1985 to 2016) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 29 April | 1 May | 23 April | 8 days earlier | -1.3 days per decade |
| First autumn frost | 7 October | 7 October | 8 October | 1 day later | +0.7 days per decade |
| Growing days | 164 days | 159 days | 170 days | 11 days more | +1.9 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
67 years, 1949 to 2016A day with at least 60.9 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 196.5 mm (7.7 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 60.9 mm (2.4 in) | |
| 5 years | 82.5 mm (3.2 in) | |
| 10 years | 101.3 mm (4.0 in) | |
| 25 years | 132.0 mm (5.2 in) | |
| 50 years | 161.1 mm (6.3 in) | |
| 100 years | 196.5 mm (7.7 in) | Longer than the 67 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, 67 years of values from 1949 to 2016.
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: 305.3 mm (12.0 in) in 1996; 143.8 mm (5.7 in) in 1993; 137.4 mm (5.4 in) in 1978.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Castana Exp Farm, at 1987. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1987 ran 0.2 C (0.3 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1987 | +0.2 | +0.3 | 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
2002 to 2016 against 1961 to 1990Over 2002 to 2016, Castana Exp Farm had a mean temperature of 9.1 C (48.4 F) and 800.0 mm (31.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Bellevue L/D 12 (United States, 447 km away), Guttenberg L&D 10 (United States, 397 km away) and Ames 8 WSW (United States, 170 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Bellevue L/D 12 | United States | 447 km (278 mi) | 9.1 C (48.3 F) | 850.5 mm (33.5 in) | 0.46 |
| Guttenberg L&D 10 | United States | 397 km (247 mi) | 9.0 C (48.2 F) | 797.5 mm (31.4 in) | 0.49 |
| Ames 8 WSW | United States | 170 km (106 mi) | 9.1 C (48.5 F) | 838.0 mm (33.0 in) | 0.52 |
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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).