Mission 14 S Weather Records (USC00395638)
Record envelope, standing records and threshold days for Mission 14 S (USC00395638), South Dakota, United States, with 76 years of record.
Key Facts for Mission 14 S
- Mission 14 S (USC00395638) is a weather station in South Dakota, United States at 43.11 latitude and -100.61 longitude, 857 m (2,810 ft) above sea level.
- The station reports from 1951 to 2026, 76 years of record.
- 1,464 records set at Mission 14 S still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Mission 14 S set a daily record high maximum temperature of 32.8 C (91.0 F) on 11 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: South Dakota, United States, 43.11 latitude, -100.61 longitude.
- Elevation: 857 m (2,810 ft).
- Period of record: 1951 to 2026, 76 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
18 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 21.7 C (71.1 F) | -33.3 C (-27.9 F) | 19.4 C (66.9 F) | -25.0 C (-13.0 F) |
| Feb | 23.9 C (75.0 F) | -34.4 C (-29.9 F) | 20.6 C (69.1 F) | -20.6 C (-5.1 F) |
| Mar | 30.0 C (86.0 F) | -32.2 C (-26.0 F) | 30.0 C (86.0 F) | -22.8 C (-9.0 F) |
| Apr | 35.0 C (95.0 F) | -16.1 C (3.0 F) | 32.8 C (91.0 F) | -8.3 C (17.1 F) |
| May | 36.7 C (98.1 F) | -7.2 C (19.0 F) | 35.6 C (96.1 F) | -4.4 C (24.1 F) |
| Jun | 42.8 C (109.0 F) | -0.6 C (30.9 F) | 33.3 C (91.9 F) | 4.4 C (39.9 F) |
| Jul | 45.6 C (114.1 F) | 3.9 C (39.0 F) | 42.8 C (109.0 F) | 12.2 C (54.0 F) |
| Aug | 42.2 C (108.0 F) | 2.8 C (37.0 F) | 35.6 C (96.1 F) | 8.9 C (48.0 F) |
| Sep | 40.0 C (104.0 F) | -6.7 C (19.9 F) | 35.6 C (96.1 F) | 6.7 C (44.1 F) |
| Oct | 35.0 C (95.0 F) | -17.8 C (0.0 F) | 32.8 C (91.0 F) | 5.6 C (42.1 F) |
| Nov | 29.4 C (84.9 F) | -29.4 C (-20.9 F) | n/a | n/a |
| Dec | 23.3 C (73.9 F) | -35.0 C (-31.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1951 | 4 |
| 1952 | 18 |
| 1953 | 19 |
| 1954 | 13 |
| 1955 | 27 |
| 1956 | 23 |
| 1957 | 11 |
| 1958 | 19 |
| 1959 | 27 |
| 1960 | 13 |
| 1961 | 13 |
| 1962 | 33 |
| 1963 | 32 |
| 1964 | 25 |
| 1965 | 25 |
| 1966 | 26 |
| 1967 | 22 |
| 1968 | 20 |
| 1969 | 21 |
| 1970 | 13 |
| 1971 | 16 |
| 1972 | 26 |
| 1973 | 11 |
| 1974 | 19 |
| 1975 | 15 |
| 1976 | 21 |
| 1977 | 20 |
| 1978 | 8 |
| 1979 | 15 |
| 1980 | 15 |
| 1981 | 16 |
| 1982 | 11 |
| 1984 | 11 |
| 1985 | 48 |
| 1986 | 18 |
| 1987 | 17 |
| 1988 | 29 |
| 1989 | 38 |
| 1990 | 27 |
| 1991 | 29 |
| 1992 | 28 |
| 1993 | 20 |
| 1994 | 17 |
| 1995 | 24 |
| 1996 | 30 |
| 1997 | 21 |
| 1998 | 25 |
| 1999 | 17 |
| 2000 | 21 |
| 2001 | 12 |
| 2002 | 25 |
| 2003 | 19 |
| 2004 | 10 |
| 2005 | 14 |
| 2006 | 19 |
| 2007 | 14 |
| 2008 | 7 |
| 2009 | 22 |
| 2010 | 12 |
| 2011 | 10 |
| 2012 | 28 |
| 2013 | 17 |
| 2014 | 20 |
| 2015 | 14 |
| 2016 | 11 |
| 2017 | 14 |
| 2018 | 23 |
| 2019 | 11 |
| 2020 | 26 |
| 2021 | 22 |
| 2022 | 11 |
| 2023 | 14 |
| 2024 | 16 |
| 2025 | 27 |
| 2026 | 29 |
All-Time Record Progression
8 new records| Date | Kind | Detail |
|---|---|---|
| 1988-06-25 | Record high maximum temperature | Record high maximum temperature 42.8 C (109.0 F) |
| 1989-02-03 | Record low maximum temperature | Record low maximum temperature -28.3 C (-18.9 F) |
| 1989-07-09 | Record high maximum temperature | Record high maximum temperature 43.3 C (109.9 F) |
| 1989-12-22 | Record low minimum temperature | Record low minimum temperature -33.9 C (-29.0 F) |
| 1990-12-22 | Record low minimum temperature | Record low minimum temperature -35.0 C (-31.0 F) |
| 1995-04-18 | Record daily snowfall | Record daily snowfall 50.8 cm (20.0 in) |
| 2007-07-24 | Record high maximum temperature | Record high maximum temperature 45.6 C (114.1 F) |
| 2007-08-04 | Record daily precipitation | Record daily precipitation 109.2 mm (4.3 in) |
Wettest Day of Each Month
Aug: 109.2 mm (4.3 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 30.7 mm (1.2 in) | 16 January 1985 |
| Feb | 48.8 mm (1.9 in) | 26 February 2000 |
| Mar | 63.5 mm (2.5 in) | 11 March 1977 |
| Apr | 63.5 mm (2.5 in) | 12 April 1970 |
| May | 78.0 mm (3.1 in) | 10 May 1999 |
| Jun | 91.4 mm (3.6 in) | 16 June 1980 |
| Jul | 85.6 mm (3.4 in) | 4 July 2000 |
| Aug | 109.2 mm (4.3 in) | 4 August 2007 |
| Sep | 61.0 mm (2.4 in) | 1 September 1963 |
| Oct | 71.1 mm (2.8 in) | 13 October 2023 |
| Nov | 24.9 mm (1.0 in) | 24 November 2001 |
| Dec | 27.7 mm (1.1 in) | 27 December 1987 |
Period of Record Coverage
1951 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1951 | 70 | 19% | No |
| 1952 | 346 | 95% | Yes |
| 1953 | 353 | 97% | Yes |
| 1954 | 330 | 90% | Yes |
| 1955 | 328 | 90% | No |
| 1956 | 351 | 96% | Yes |
| 1957 | 351 | 96% | Yes |
| 1958 | 352 | 96% | Yes |
| 1959 | 348 | 95% | Yes |
| 1960 | 297 | 81% | No |
| 1961 | 356 | 98% | Yes |
| 1962 | 352 | 96% | Yes |
| 1963 | 356 | 98% | Yes |
| 1964 | 350 | 96% | Yes |
| 1965 | 354 | 97% | Yes |
| 1966 | 352 | 96% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 363 | 99% | Yes |
| 1969 | 364 | 100% | Yes |
| 1970 | 364 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 364 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 363 | 99% | Yes |
| 1977 | 346 | 95% | Yes |
| 1978 | 354 | 97% | Yes |
| 1979 | 350 | 96% | Yes |
| 1980 | 339 | 93% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 151 | 41% | No |
| 1984 | 214 | 58% | No |
| 1985 | 355 | 97% | Yes |
| 1986 | 363 | 99% | Yes |
| 1987 | 364 | 100% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 363 | 99% | Yes |
| 1992 | 365 | 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 | 362 | 99% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 364 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 361 | 99% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 360 | 99% | 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 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 359 | 98% | Yes |
| 2021 | 364 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 364 | 100% | Yes |
| 2024 | 365 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 283 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 11 October 2026 | Mission 14 S, US | daily high max (Provisional) | 32.8 C (91.0 F) | 1.1 C (2.0 F) | 1 year | 8 of 100 (Routine) |
| 29 September 2026 | Mission 14 S, US | daily high min (Provisional) | 16.7 C (62.1 F) | 3.4 C (6.1 F) | 4 years | 15 of 100 (Routine) |
| 7 September 2026 | Mission 14 S, US | daily high min (Provisional) | 19.4 C (66.9 F) | 1.1 C (2.0 F) | 24 years | 16 of 100 (Routine) |
| 24 August 2026 | Mission 14 S, US | daily rain (Provisional) | 34.3 mm (1.4 in) | 27.2 mm (1.1 in) | 24 years | 38 of 100 (Notable) |
| 11 August 2026 | Mission 14 S, US | daily high min | 20.0 C (68.0 F) | 1.1 C (2.0 F) | 60 years | 28 of 100 (Routine) |
| 28 July 2026 | Mission 14 S, US | daily high max | 38.3 C (100.9 F) | 0.5 C (0.9 F) | 51 years | 23 of 100 (Routine) |
| 27 July 2026 | Mission 14 S, US | daily high max | 40.6 C (105.1 F) | 2.3 C (4.1 F) | 73 years | 34 of 100 (Routine) |
| 27 July 2026 | Mission 14 S, US | daily high min | 22.2 C (72.0 F) | 1.1 C (2.0 F) | 72 years | 31 of 100 (Routine) |
| 26 July 2026 | Mission 14 S, US | daily high min (Tie) | 21.1 C (70.0 F) | tie | 23 years | 3 of 100 (Routine) |
| 26 June 2026 | Mission 14 S, US | daily low max | 16.7 C (62.1 F) | 1.6 C (2.9 F) | 57 years | 27 of 100 (Routine) |
| 23 June 2026 | Mission 14 S, US | daily low max | 21.1 C (70.0 F) | 0.6 C (1.1 F) | 59 years | 25 of 100 (Routine) |
| 5 June 2026 | Mission 14 S, US | daily rain | 24.4 mm (1.0 in) | 0.3 mm (0.01 in) | 60 years | 20 of 100 (Routine) |
| 26 May 2026 | Mission 14 S, US | daily high max (Tie) | 35.6 C (96.1 F) | tie | 56 years | 6 of 100 (Routine) |
| 19 May 2026 | Mission 14 S, US | daily low max | 5.0 C (41.0 F) | 4.4 C (7.9 F) | 57 years | 30 of 100 (Routine) |
| 17 April 2026 | Mission 14 S, US | daily high max | 29.4 C (84.9 F) | 0.5 C (0.9 F) | 0 years | 7 of 100 (Routine) |
| 31 March 2026 | Mission 14 S, US | daily high max | 27.8 C (82.0 F) | 0.6 C (1.1 F) | 63 years | 25 of 100 (Routine) |
| 26 March 2026 | Mission 14 S, US | monthly high max | 30.0 C (86.0 F) | 0.6 C (1.1 F) | 0 years | 17 of 100 (Routine) |
| 22 March 2026 | Mission 14 S, US | monthly high max | 29.4 C (84.9 F) | 0.5 C (0.9 F) | 47 years | 31 of 100 (Routine) |
| 21 March 2026 | Mission 14 S, US | daily high min | 8.9 C (48.0 F) | 3.9 C (7.0 F) | 28 years | 21 of 100 (Routine) |
| 21 March 2026 | Mission 14 S, US | monthly high max (Tie) | 28.9 C (84.0 F) | tie | 47 years | 7 of 100 (Routine) |
Climate Trend
64 complete years, 1952 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1952 | 8.7 C | +0.27 C |
| 1956 | 8.9 C | +0.46 C |
| 1957 | 8.1 C | -0.34 C |
| 1958 | 8.3 C | -0.10 C |
| 1959 | 8.3 C | -0.07 C |
| 1961 | 8.7 C | +0.32 C |
| 1962 | 8.6 C | +0.19 C |
| 1963 | 9.7 C | +1.28 C |
| 1964 | 8.6 C | +0.17 C |
| 1965 | 8.4 C | +0.02 C |
| 1966 | 7.8 C | -0.57 C |
| 1967 | 8.3 C | -0.10 C |
| 1968 | 8.4 C | -0.04 C |
| 1969 | 8.0 C | -0.40 C |
| 1970 | 8.2 C | -0.19 C |
| 1971 | 8.1 C | -0.36 C |
| 1972 | 7.5 C | -0.91 C |
| 1973 | 8.9 C | +0.52 C |
| 1974 | 9.2 C | +0.80 C |
| 1975 | 8.0 C | -0.41 C |
| 1976 | 9.1 C | +0.64 C |
| 1980 | 9.0 C | +0.63 C |
| 1981 | 9.8 C | +1.42 C |
| 1985 | 7.0 C | -1.45 C |
| 1986 | 8.4 C | +0.03 C |
| 1987 | 9.7 C | +1.25 C |
| 1988 | 8.6 C | +0.22 C |
| 1989 | 8.0 C | -0.44 C |
| 1990 | 9.1 C | +0.72 C |
| 1991 | 8.8 C | +0.39 C |
| 1992 | 8.0 C | -0.42 C |
| 1993 | 6.4 C | -1.99 C |
| 1994 | 8.1 C | -0.31 C |
| 1995 | 7.9 C | -0.51 C |
| 1996 | 6.3 C | -2.14 C |
| 1997 | 8.1 C | -0.33 C |
| 1998 | 9.3 C | +0.86 C |
| 1999 | 9.6 C | +1.19 C |
| 2000 | 8.5 C | +0.12 C |
| 2001 | 9.1 C | +0.67 C |
| 2002 | 8.4 C | -0.01 C |
| 2003 | 8.7 C | +0.24 C |
| 2004 | 8.8 C | +0.36 C |
| 2005 | 9.1 C | +0.68 C |
| 2006 | 9.2 C | +0.76 C |
| 2007 | 8.8 C | +0.43 C |
| 2008 | 7.3 C | -1.09 C |
| 2009 | 7.0 C | -1.38 C |
| 2010 | 8.2 C | -0.17 C |
| 2011 | 7.5 C | -0.95 C |
| 2012 | 10.2 C | +1.82 C |
| 2013 | 7.4 C | -0.99 C |
| 2014 | 7.2 C | -1.26 C |
| 2015 | 8.9 C | +0.49 C |
| 2016 | 9.2 C | +0.82 C |
| 2017 | 8.7 C | +0.25 C |
| 2018 | 7.0 C | -1.38 C |
| 2019 | 6.2 C | -2.20 C |
| 2020 | 8.7 C | +0.32 C |
| 2021 | 9.3 C | +0.91 C |
| 2022 | 8.0 C | -0.38 C |
| 2023 | 8.5 C | +0.07 C |
| 2024 | 9.5 C | +1.09 C |
| 2025 | 9.1 C | +0.67 C |
The fitted trend in annual mean temperature here over 1952 to 2025 is -0.02 C (-0.13 to 0.08) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.04 F (-0.23 to 0.14) per decade. The slope is a straight line fitted to 64 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.02 C (-0.13 to 0.08) per decade | -0.04 F (-0.23 to 0.14) per decade | 1952 to 2025 | 64 | Not clearly different from zero |
| Mean daily maximum | -0.1 C (-0.2 to 0.1) per decade | -0.1 F (-0.4 to 0.1) per decade | 1952 to 2025 | 64 | Not clearly different from zero |
| Mean daily minimum | 0.03 C (-0.05 to 0.11) per decade | 0.1 F (-0.1 to 0.2) per decade | 1952 to 2025 | 64 | 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
1951 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 45.6 C (114.1 F) | 2007 | 39.4 C (102.9 F) | 75 |
| Coldest night (TNn) | -35.0 C (-31.0 F) | 1990 | -28.9 C (-20.0 F) | 75 |
| Wettest day (Rx1day) | 109.2 mm (4.3 in) | 2007 | 47.5 mm (1.9 in) | 75 |
| Wettest five days (Rx5day) | 144.3 mm (5.7 in) | 1980 | 73.3 mm (2.9 in) | 75 |
| Longest dry spell (CDD) | 92 days | 1958 | 33 days | 75 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1951 | 22.2 C (72.0 F) |
| 1952 | 41.7 C (107.1 F) |
| 1953 | 36.7 C (98.1 F) |
| 1954 | 40.6 C (105.1 F) |
| 1955 | 41.7 C (107.1 F) |
| 1956 | 40.6 C (105.1 F) |
| 1957 | 38.9 C (102.0 F) |
| 1958 | 37.2 C (99.0 F) |
| 1959 | 40.6 C (105.1 F) |
| 1960 | 39.4 C (102.9 F) |
| 1961 | 40.6 C (105.1 F) |
| 1962 | 39.4 C (102.9 F) |
| 1963 | 39.4 C (102.9 F) |
| 1964 | 41.7 C (107.1 F) |
| 1965 | 41.7 C (107.1 F) |
| 1966 | 42.2 C (108.0 F) |
| 1967 | 38.3 C (100.9 F) |
| 1968 | 38.9 C (102.0 F) |
| 1969 | 39.4 C (102.9 F) |
| 1970 | 40.0 C (104.0 F) |
| 1971 | 38.3 C (100.9 F) |
| 1972 | 35.6 C (96.1 F) |
| 1973 | 39.4 C (102.9 F) |
| 1974 | 40.0 C (104.0 F) |
| 1975 | 37.8 C (100.0 F) |
| 1976 | 38.9 C (102.0 F) |
| 1977 | 38.9 C (102.0 F) |
| 1978 | 37.2 C (99.0 F) |
| 1979 | 37.8 C (100.0 F) |
| 1980 | 40.0 C (104.0 F) |
| 1981 | 37.8 C (100.0 F) |
| 1982 | 30.0 C (86.0 F) |
| 1984 | 39.4 C (102.9 F) |
| 1985 | 40.6 C (105.1 F) |
| 1986 | 40.0 C (104.0 F) |
| 1987 | 40.6 C (105.1 F) |
| 1988 | 42.8 C (109.0 F) |
| 1989 | 43.3 C (109.9 F) |
| 1990 | 43.3 C (109.9 F) |
| 1991 | 38.3 C (100.9 F) |
| 1992 | 36.1 C (97.0 F) |
| 1993 | 36.1 C (97.0 F) |
| 1994 | 36.7 C (98.1 F) |
| 1995 | 40.0 C (104.0 F) |
| 1996 | 37.8 C (100.0 F) |
| 1997 | 37.8 C (100.0 F) |
| 1998 | 40.0 C (104.0 F) |
| 1999 | 38.3 C (100.9 F) |
| 2000 | 38.3 C (100.9 F) |
| 2001 | 40.6 C (105.1 F) |
| 2002 | 42.2 C (108.0 F) |
| 2003 | 43.3 C (109.9 F) |
| 2004 | 39.4 C (102.9 F) |
| 2005 | 41.7 C (107.1 F) |
| 2006 | 43.3 C (109.9 F) |
| 2007 | 45.6 C (114.1 F) |
| 2008 | 37.2 C (99.0 F) |
| 2009 | 35.6 C (96.1 F) |
| 2010 | 39.4 C (102.9 F) |
| 2011 | 36.7 C (98.1 F) |
| 2012 | 41.7 C (107.1 F) |
| 2013 | 37.8 C (100.0 F) |
| 2014 | 38.9 C (102.0 F) |
| 2015 | 39.4 C (102.9 F) |
| 2016 | 38.9 C (102.0 F) |
| 2017 | 41.7 C (107.1 F) |
| 2018 | 37.2 C (99.0 F) |
| 2019 | 38.3 C (100.9 F) |
| 2020 | 38.3 C (100.9 F) |
| 2021 | 40.6 C (105.1 F) |
| 2022 | 41.1 C (106.0 F) |
| 2023 | 38.9 C (102.0 F) |
| 2024 | 39.4 C (102.9 F) |
| 2025 | 38.3 C (100.9 F) |
| 2026 | 42.8 C (109.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1951 | -31.1 C (-24.0 F) |
| 1952 | -25.0 C (-13.0 F) |
| 1953 | -27.8 C (-18.0 F) |
| 1954 | -28.3 C (-18.9 F) |
| 1955 | -27.2 C (-17.0 F) |
| 1956 | -27.8 C (-18.0 F) |
| 1957 | -30.0 C (-22.0 F) |
| 1958 | -29.4 C (-20.9 F) |
| 1959 | -32.2 C (-26.0 F) |
| 1960 | -32.2 C (-26.0 F) |
| 1961 | -27.2 C (-17.0 F) |
| 1962 | -31.7 C (-25.1 F) |
| 1963 | -32.8 C (-27.0 F) |
| 1964 | -28.9 C (-20.0 F) |
| 1965 | -26.7 C (-16.1 F) |
| 1966 | -33.3 C (-27.9 F) |
| 1967 | -31.7 C (-25.1 F) |
| 1968 | -31.1 C (-24.0 F) |
| 1969 | -28.9 C (-20.0 F) |
| 1970 | -29.4 C (-20.9 F) |
| 1971 | -29.4 C (-20.9 F) |
| 1972 | -30.6 C (-23.1 F) |
| 1973 | -29.4 C (-20.9 F) |
| 1974 | -30.0 C (-22.0 F) |
| 1975 | -30.0 C (-22.0 F) |
| 1976 | -28.3 C (-18.9 F) |
| 1977 | -28.9 C (-20.0 F) |
| 1978 | -29.4 C (-20.9 F) |
| 1979 | -30.6 C (-23.1 F) |
| 1980 | -29.4 C (-20.9 F) |
| 1981 | -30.0 C (-22.0 F) |
| 1982 | -31.7 C (-25.1 F) |
| 1984 | -24.4 C (-11.9 F) |
| 1985 | -29.4 C (-20.9 F) |
| 1986 | -25.6 C (-14.1 F) |
| 1987 | -20.6 C (-5.1 F) |
| 1988 | -30.6 C (-23.1 F) |
| 1989 | -33.9 C (-29.0 F) |
| 1990 | -35.0 C (-31.0 F) |
| 1991 | -23.9 C (-11.0 F) |
| 1992 | -26.1 C (-15.0 F) |
| 1993 | -29.4 C (-20.9 F) |
| 1994 | -32.2 C (-26.0 F) |
| 1995 | -23.9 C (-11.0 F) |
| 1996 | -34.4 C (-29.9 F) |
| 1997 | -26.7 C (-16.1 F) |
| 1998 | -29.4 C (-20.9 F) |
| 1999 | -26.1 C (-15.0 F) |
| 2000 | -27.8 C (-18.0 F) |
| 2001 | -23.9 C (-11.0 F) |
| 2002 | -22.2 C (-8.0 F) |
| 2003 | -27.8 C (-18.0 F) |
| 2004 | -27.2 C (-17.0 F) |
| 2005 | -25.6 C (-14.1 F) |
| 2006 | -29.4 C (-20.9 F) |
| 2007 | -30.0 C (-22.0 F) |
| 2008 | -27.2 C (-17.0 F) |
| 2009 | -24.4 C (-11.9 F) |
| 2010 | -27.2 C (-17.0 F) |
| 2011 | -26.1 C (-15.0 F) |
| 2012 | -23.3 C (-9.9 F) |
| 2013 | -28.3 C (-18.9 F) |
| 2014 | -30.0 C (-22.0 F) |
| 2015 | -24.4 C (-11.9 F) |
| 2016 | -29.4 C (-20.9 F) |
| 2017 | -28.3 C (-18.9 F) |
| 2018 | -28.9 C (-20.0 F) |
| 2019 | -27.8 C (-18.0 F) |
| 2020 | -26.7 C (-16.1 F) |
| 2021 | -31.7 C (-25.1 F) |
| 2022 | -29.4 C (-20.9 F) |
| 2023 | -27.2 C (-17.0 F) |
| 2024 | -31.1 C (-24.0 F) |
| 2025 | -31.1 C (-24.0 F) |
| 2026 | -25.0 C (-13.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1951 | 47.0 mm (1.9 in) |
| 1952 | 26.7 mm (1.1 in) |
| 1953 | 63.2 mm (2.5 in) |
| 1954 | 44.7 mm (1.8 in) |
| 1955 | 57.2 mm (2.3 in) |
| 1956 | 26.7 mm (1.1 in) |
| 1957 | 31.8 mm (1.3 in) |
| 1958 | 43.2 mm (1.7 in) |
| 1959 | 100.3 mm (3.9 in) |
| 1960 | 53.3 mm (2.1 in) |
| 1961 | 37.1 mm (1.5 in) |
| 1962 | 65.8 mm (2.6 in) |
| 1963 | 61.0 mm (2.4 in) |
| 1964 | 68.6 mm (2.7 in) |
| 1965 | 30.0 mm (1.2 in) |
| 1966 | 51.3 mm (2.0 in) |
| 1967 | 34.3 mm (1.4 in) |
| 1968 | 42.9 mm (1.7 in) |
| 1969 | 29.5 mm (1.2 in) |
| 1970 | 63.5 mm (2.5 in) |
| 1971 | 53.1 mm (2.1 in) |
| 1972 | 56.4 mm (2.2 in) |
| 1973 | 75.7 mm (3.0 in) |
| 1974 | 54.6 mm (2.1 in) |
| 1975 | 38.4 mm (1.5 in) |
| 1976 | 35.6 mm (1.4 in) |
| 1977 | 63.5 mm (2.5 in) |
| 1978 | 54.6 mm (2.1 in) |
| 1979 | 32.3 mm (1.3 in) |
| 1980 | 91.4 mm (3.6 in) |
| 1981 | 58.4 mm (2.3 in) |
| 1982 | 63.5 mm (2.5 in) |
| 1984 | 30.5 mm (1.2 in) |
| 1985 | 40.6 mm (1.6 in) |
| 1986 | 27.4 mm (1.1 in) |
| 1987 | 55.4 mm (2.2 in) |
| 1988 | 55.4 mm (2.2 in) |
| 1989 | 47.0 mm (1.9 in) |
| 1990 | 57.7 mm (2.3 in) |
| 1991 | 61.5 mm (2.4 in) |
| 1992 | 37.3 mm (1.5 in) |
| 1993 | 48.0 mm (1.9 in) |
| 1994 | 57.4 mm (2.3 in) |
| 1995 | 58.7 mm (2.3 in) |
| 1996 | 45.7 mm (1.8 in) |
| 1997 | 42.2 mm (1.7 in) |
| 1998 | 70.6 mm (2.8 in) |
| 1999 | 78.0 mm (3.1 in) |
| 2000 | 85.6 mm (3.4 in) |
| 2001 | 44.2 mm (1.7 in) |
| 2002 | 24.9 mm (1.0 in) |
| 2003 | 24.6 mm (1.0 in) |
| 2004 | 37.3 mm (1.5 in) |
| 2005 | 45.5 mm (1.8 in) |
| 2006 | 65.0 mm (2.6 in) |
| 2007 | 109.2 mm (4.3 in) |
| 2008 | 50.3 mm (2.0 in) |
| 2009 | 37.8 mm (1.5 in) |
| 2010 | 62.7 mm (2.5 in) |
| 2011 | 36.1 mm (1.4 in) |
| 2012 | 28.7 mm (1.1 in) |
| 2013 | 55.1 mm (2.2 in) |
| 2014 | 68.3 mm (2.7 in) |
| 2015 | 47.2 mm (1.9 in) |
| 2016 | 78.0 mm (3.1 in) |
| 2017 | 43.4 mm (1.7 in) |
| 2018 | 37.8 mm (1.5 in) |
| 2019 | 45.5 mm (1.8 in) |
| 2020 | 39.1 mm (1.5 in) |
| 2021 | 36.8 mm (1.4 in) |
| 2022 | 63.0 mm (2.5 in) |
| 2023 | 71.1 mm (2.8 in) |
| 2024 | 46.5 mm (1.8 in) |
| 2025 | 39.6 mm (1.6 in) |
| 2026 | 47.5 mm (1.9 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1951 | 57.2 mm (2.3 in) |
| 1952 | 51.4 mm (2.0 in) |
| 1953 | 70.8 mm (2.8 in) |
| 1954 | 71.1 mm (2.8 in) |
| 1955 | 94.8 mm (3.7 in) |
| 1956 | 70.6 mm (2.8 in) |
| 1957 | 53.6 mm (2.1 in) |
| 1958 | 78.8 mm (3.1 in) |
| 1959 | 100.3 mm (3.9 in) |
| 1960 | 55.3 mm (2.2 in) |
| 1961 | 53.3 mm (2.1 in) |
| 1962 | 94.6 mm (3.7 in) |
| 1963 | 81.4 mm (3.2 in) |
| 1964 | 90.6 mm (3.6 in) |
| 1965 | 40.7 mm (1.6 in) |
| 1966 | 71.7 mm (2.8 in) |
| 1967 | 68.3 mm (2.7 in) |
| 1968 | 68.3 mm (2.7 in) |
| 1969 | 46.8 mm (1.8 in) |
| 1970 | 76.0 mm (3.0 in) |
| 1971 | 79.2 mm (3.1 in) |
| 1972 | 72.1 mm (2.8 in) |
| 1973 | 94.2 mm (3.7 in) |
| 1974 | 56.6 mm (2.2 in) |
| 1975 | 69.4 mm (2.7 in) |
| 1976 | 44.9 mm (1.8 in) |
| 1977 | 90.9 mm (3.6 in) |
| 1978 | 82.8 mm (3.3 in) |
| 1979 | 59.0 mm (2.3 in) |
| 1980 | 144.3 mm (5.7 in) |
| 1981 | 63.5 mm (2.5 in) |
| 1982 | 92.4 mm (3.6 in) |
| 1984 | 47.0 mm (1.9 in) |
| 1985 | 41.9 mm (1.6 in) |
| 1986 | 61.7 mm (2.4 in) |
| 1987 | 64.9 mm (2.6 in) |
| 1988 | 83.4 mm (3.3 in) |
| 1989 | 51.3 mm (2.0 in) |
| 1990 | 81.8 mm (3.2 in) |
| 1991 | 71.2 mm (2.8 in) |
| 1992 | 64.7 mm (2.5 in) |
| 1993 | 60.0 mm (2.4 in) |
| 1994 | 63.8 mm (2.5 in) |
| 1995 | 99.6 mm (3.9 in) |
| 1996 | 80.3 mm (3.2 in) |
| 1997 | 55.4 mm (2.2 in) |
| 1998 | 104.4 mm (4.1 in) |
| 1999 | 95.5 mm (3.8 in) |
| 2000 | 91.7 mm (3.6 in) |
| 2001 | 62.2 mm (2.4 in) |
| 2002 | 50.5 mm (2.0 in) |
| 2003 | 48.2 mm (1.9 in) |
| 2004 | 52.3 mm (2.1 in) |
| 2005 | 80.0 mm (3.1 in) |
| 2006 | 79.3 mm (3.1 in) |
| 2007 | 110.5 mm (4.4 in) |
| 2008 | 89.9 mm (3.5 in) |
| 2009 | 68.0 mm (2.7 in) |
| 2010 | 112.4 mm (4.4 in) |
| 2011 | 94.8 mm (3.7 in) |
| 2012 | 51.4 mm (2.0 in) |
| 2013 | 91.7 mm (3.6 in) |
| 2014 | 141.9 mm (5.6 in) |
| 2015 | 73.3 mm (2.9 in) |
| 2016 | 120.6 mm (4.7 in) |
| 2017 | 92.2 mm (3.6 in) |
| 2018 | 115.6 mm (4.6 in) |
| 2019 | 88.4 mm (3.5 in) |
| 2020 | 44.3 mm (1.7 in) |
| 2021 | 57.7 mm (2.3 in) |
| 2022 | 84.1 mm (3.3 in) |
| 2023 | 102.8 mm (4.0 in) |
| 2024 | 94.5 mm (3.7 in) |
| 2025 | 76.2 mm (3.0 in) |
| 2026 | 85.6 mm (3.4 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1951 | 30 days |
| 1952 | 34 days |
| 1953 | 39 days |
| 1954 | 52 days |
| 1955 | 48 days |
| 1956 | 45 days |
| 1957 | 42 days |
| 1958 | 92 days |
| 1959 | 48 days |
| 1960 | 29 days |
| 1961 | 36 days |
| 1962 | 73 days |
| 1963 | 24 days |
| 1964 | 73 days |
| 1965 | 77 days |
| 1966 | 38 days |
| 1967 | 55 days |
| 1968 | 28 days |
| 1969 | 25 days |
| 1970 | 67 days |
| 1971 | 30 days |
| 1972 | 47 days |
| 1973 | 27 days |
| 1974 | 48 days |
| 1975 | 30 days |
| 1976 | 33 days |
| 1977 | 22 days |
| 1978 | 34 days |
| 1979 | 40 days |
| 1980 | 30 days |
| 1981 | 37 days |
| 1982 | 21 days |
| 1984 | 20 days |
| 1985 | 27 days |
| 1986 | 30 days |
| 1987 | 45 days |
| 1988 | 29 days |
| 1989 | 32 days |
| 1990 | 38 days |
| 1991 | 31 days |
| 1992 | 32 days |
| 1993 | 18 days |
| 1994 | 33 days |
| 1995 | 25 days |
| 1996 | 32 days |
| 1997 | 56 days |
| 1998 | 50 days |
| 1999 | 33 days |
| 2000 | 22 days |
| 2001 | 44 days |
| 2002 | 27 days |
| 2003 | 22 days |
| 2004 | 32 days |
| 2005 | 39 days |
| 2006 | 34 days |
| 2007 | 40 days |
| 2008 | 20 days |
| 2009 | 22 days |
| 2010 | 20 days |
| 2011 | 32 days |
| 2012 | 25 days |
| 2013 | 21 days |
| 2014 | 35 days |
| 2015 | 36 days |
| 2016 | 48 days |
| 2017 | 28 days |
| 2018 | 28 days |
| 2019 | 24 days |
| 2020 | 42 days |
| 2021 | 28 days |
| 2022 | 40 days |
| 2023 | 28 days |
| 2024 | 34 days |
| 2025 | 35 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
64 years with a frostAcross 64 years with a frost, the median last spring frost at Mission 14 S falls on 12 May and the median first autumn frost on 1 October, which leaves a median of 142 days between them.
In 1996 to 2025 the median growing season was 143 days. That is 4 days more than in 1952 to 1991.
Fitted over all years, the growing season changes by +1.5 days per decade at this station.
| Measure | Median, all years | Earliest period (1952 to 1991) | Recent period (1996 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 12 May | 12 May | 12 May | no change | -0.5 days per decade |
| First autumn frost | 1 October | 27 September | 4 October | 7 days later | +1.0 days per decade |
| Growing days | 142 days | 139 days | 143 days | 4 days more | +1.5 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
70 years, 1952 to 2025A day with at least 48.8 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 105.9 mm (4.2 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 48.8 mm (1.9 in) | |
| 5 years | 64.9 mm (2.6 in) | |
| 10 years | 75.2 mm (3.0 in) | |
| 25 years | 87.9 mm (3.5 in) | |
| 50 years | 97.1 mm (3.8 in) | |
| 100 years | 105.9 mm (4.2 in) | Longer than the 70 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, 70 years of values from 1952 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: 109.2 mm (4.3 in) in 2007; 100.3 mm (3.9 in) in 1959; 91.4 mm (3.6 in) in 1980.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Mission 14 S, at 1974. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1974 ran 0.3 C (0.5 F) lower than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1974 | -0.3 | -0.5 | possible | 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
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Mission 14 S had a mean temperature of 8.4 C (47.0 F) and 581.9 mm (22.9 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Mullen 21 NW (United States, 113 km away), Gordon 6N (United States, 132 km away) and Rapid City Rgnl AP (United States, 223 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Mullen 21 NW | United States | 113 km (70 mi) | 7.9 C (46.2 F) | 534.7 mm (21.1 in) | 1.21 |
| Gordon 6N | United States | 132 km (82 mi) | 7.9 C (46.3 F) | 445.9 mm (17.6 in) | 1.30 |
| Rapid City Rgnl AP | United States | 223 km (139 mi) | 8.2 C (46.8 F) | 423.3 mm (16.7 in) | 1.30 |
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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-15).