Clearwater Dam Weather Records (USC00231674)
Record envelope, standing records and threshold days for Clearwater Dam (USC00231674), Missouri, United States, with 81 years of record.
Key Facts for Clearwater Dam
- Clearwater Dam (USC00231674) is a weather station in Missouri, United States at 37.13 latitude and -90.78 longitude, 201 m (660 ft) above sea level.
- The station reports from 1946 to 2026, 81 years of record.
- 1,464 records set at Clearwater Dam still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Clearwater Dam set a daily record high minimum temperature of 20.6 C (69.1 F) on 2 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Missouri, United States, 37.13 latitude, -90.78 longitude.
- Elevation: 201 m (660 ft).
- Period of record: 1946 to 2026, 81 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
15 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 25.0 C (77.0 F) | -28.3 C (-18.9 F) | 22.2 C (72.0 F) | -17.8 C (0.0 F) |
| Feb | 31.1 C (88.0 F) | -27.8 C (-18.0 F) | 24.4 C (75.9 F) | -16.7 C (1.9 F) |
| Mar | 32.8 C (91.0 F) | -21.7 C (-7.1 F) | 32.8 C (91.0 F) | -7.8 C (18.0 F) |
| Apr | 35.0 C (95.0 F) | -7.2 C (19.0 F) | 27.8 C (82.0 F) | 1.7 C (35.1 F) |
| May | 36.1 C (97.0 F) | -1.7 C (28.9 F) | 29.4 C (84.9 F) | 2.2 C (36.0 F) |
| Jun | 42.8 C (109.0 F) | 5.0 C (41.0 F) | 32.8 C (91.0 F) | 13.3 C (55.9 F) |
| Jul | 43.3 C (109.9 F) | 7.2 C (45.0 F) | 36.1 C (97.0 F) | 18.9 C (66.0 F) |
| Aug | 42.8 C (109.0 F) | 5.0 C (41.0 F) | 37.8 C (100.0 F) | 16.1 C (61.0 F) |
| Sep | 41.1 C (106.0 F) | 0.0 C (32.0 F) | 38.9 C (102.0 F) | 10.6 C (51.1 F) |
| Oct | 37.2 C (99.0 F) | -7.2 C (19.0 F) | 33.9 C (93.0 F) | 7.8 C (46.0 F) |
| Nov | 30.0 C (86.0 F) | -18.3 C (-0.9 F) | n/a | n/a |
| Dec | 25.6 C (78.1 F) | -25.0 C (-13.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1946 | 5 |
| 1947 | 23 |
| 1948 | 24 |
| 1949 | 19 |
| 1950 | 45 |
| 1951 | 17 |
| 1952 | 53 |
| 1953 | 41 |
| 1954 | 32 |
| 1955 | 31 |
| 1956 | 15 |
| 1957 | 11 |
| 1958 | 14 |
| 1959 | 20 |
| 1960 | 21 |
| 1961 | 30 |
| 1962 | 33 |
| 1963 | 36 |
| 1964 | 17 |
| 1965 | 25 |
| 1966 | 17 |
| 1967 | 28 |
| 1968 | 11 |
| 1969 | 8 |
| 1970 | 30 |
| 1971 | 17 |
| 1972 | 23 |
| 1973 | 11 |
| 1974 | 27 |
| 1975 | 2 |
| 1976 | 22 |
| 1977 | 23 |
| 1978 | 17 |
| 1979 | 13 |
| 1980 | 36 |
| 1981 | 20 |
| 1982 | 20 |
| 1983 | 25 |
| 1984 | 16 |
| 1985 | 18 |
| 1986 | 19 |
| 1987 | 13 |
| 1988 | 10 |
| 1989 | 34 |
| 1990 | 17 |
| 1991 | 24 |
| 1992 | 9 |
| 1993 | 2 |
| 1994 | 7 |
| 1995 | 12 |
| 1996 | 19 |
| 1997 | 9 |
| 1998 | 14 |
| 1999 | 6 |
| 2000 | 14 |
| 2001 | 9 |
| 2002 | 8 |
| 2003 | 8 |
| 2004 | 16 |
| 2005 | 12 |
| 2006 | 12 |
| 2007 | 13 |
| 2008 | 15 |
| 2009 | 11 |
| 2010 | 8 |
| 2011 | 17 |
| 2012 | 17 |
| 2013 | 11 |
| 2014 | 20 |
| 2015 | 23 |
| 2016 | 9 |
| 2017 | 18 |
| 2018 | 16 |
| 2019 | 8 |
| 2020 | 9 |
| 2021 | 24 |
| 2022 | 15 |
| 2023 | 13 |
| 2024 | 13 |
| 2025 | 14 |
| 2026 | 20 |
All-Time Record Progression
9 new records| Date | Kind | Detail |
|---|---|---|
| 1980-07-13 | Record high maximum temperature | Record high maximum temperature 43.3 C (109.9 F) |
| 1982-01-11 | Record low maximum temperature | Record low maximum temperature -17.2 C (1.0 F) |
| 1982-12-03 | Record daily precipitation | Record daily precipitation 151.1 mm (5.9 in) |
| 1983-03-09 | Record daily snowfall | Record daily snowfall 23.9 cm (9.4 in) |
| 1993-02-16 | Record daily snowfall | Record daily snowfall 30.5 cm (12.0 in) |
| 2005-11-15 | Record daily precipitation | Record daily precipitation 205.7 mm (8.1 in) |
| 2010-08-05 | Record high minimum temperature | Record high minimum temperature 25.0 C (77.0 F) |
| 2011-08-04 | Record high minimum temperature | Record high minimum temperature 25.6 C (78.1 F) |
| 2023-07-01 | Record high minimum temperature | Record high minimum temperature 26.1 C (79.0 F) |
Wettest Day of Each Month
Mar: 205.7 mm (8.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 103.9 mm (4.1 in) | 13 January 2013 |
| Feb | 114.3 mm (4.5 in) | 1 February 2008 |
| Mar | 205.7 mm (8.1 in) | 19 March 2008 |
| Apr | 141.5 mm (5.6 in) | 30 April 2017 |
| May | 118.1 mm (4.6 in) | 23 May 1957 |
| Jun | 132.6 mm (5.2 in) | 19 June 2000 |
| Jul | 103.1 mm (4.1 in) | 29 July 1964 |
| Aug | 137.2 mm (5.4 in) | 15 August 2016 |
| Sep | 152.4 mm (6.0 in) | 27 September 2007 |
| Oct | 82.8 mm (3.3 in) | 30 October 2009 |
| Nov | 205.7 mm (8.1 in) | 15 November 2005 |
| Dec | 151.1 mm (5.9 in) | 3 December 1982 |
Period of Record Coverage
1946 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1946 | 61 | 17% | No |
| 1947 | 363 | 99% | Yes |
| 1948 | 365 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 363 | 99% | Yes |
| 1951 | 357 | 98% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 347 | 95% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 363 | 99% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 364 | 100% | Yes |
| 1960 | 365 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 363 | 99% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 364 | 99% | Yes |
| 1965 | 364 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 364 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 331 | 91% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 151 | 41% | No |
| 1976 | 275 | 75% | No |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 335 | 92% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 364 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 364 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 347 | 95% | Yes |
| 1993 | 265 | 73% | No |
| 1994 | 267 | 73% | No |
| 1995 | 317 | 87% | No |
| 1996 | 344 | 94% | Yes |
| 1997 | 362 | 99% | Yes |
| 1998 | 363 | 99% | Yes |
| 1999 | 295 | 81% | No |
| 2000 | 251 | 69% | No |
| 2001 | 249 | 68% | No |
| 2002 | 254 | 70% | No |
| 2003 | 261 | 72% | No |
| 2004 | 282 | 77% | No |
| 2005 | 285 | 78% | No |
| 2006 | 299 | 82% | No |
| 2007 | 338 | 93% | Yes |
| 2008 | 349 | 95% | Yes |
| 2009 | 357 | 98% | Yes |
| 2010 | 333 | 91% | Yes |
| 2011 | 341 | 93% | Yes |
| 2012 | 324 | 89% | No |
| 2013 | 304 | 83% | No |
| 2014 | 272 | 75% | No |
| 2015 | 337 | 92% | Yes |
| 2016 | 343 | 94% | Yes |
| 2017 | 346 | 95% | Yes |
| 2018 | 347 | 95% | Yes |
| 2019 | 338 | 93% | Yes |
| 2020 | 335 | 92% | Yes |
| 2021 | 338 | 93% | Yes |
| 2022 | 306 | 84% | No |
| 2023 | 338 | 93% | Yes |
| 2024 | 326 | 89% | No |
| 2025 | 341 | 93% | Yes |
| 2026 | 272 | 75% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 2 October 2026 | Clearwater Dam, US | daily high min (Provisional) | 20.6 C (69.1 F) | 0.6 C (1.1 F) | 4 years | 10 of 100 (Routine) |
| 1 October 2026 | Clearwater Dam, US | daily high max (Tie, Provisional) | 33.9 C (93.0 F) | tie | 73 years | 7 of 100 (Routine) |
| 21 September 2026 | Clearwater Dam, US | daily high max (Tie, Provisional) | 36.7 C (98.1 F) | tie | 71 years | 7 of 100 (Routine) |
| 20 September 2026 | Clearwater Dam, US | daily high max (Provisional) | 37.8 C (100.0 F) | 1.7 C (3.1 F) | 71 years | 32 of 100 (Routine) |
| 19 September 2026 | Clearwater Dam, US | daily high max (Tie, Provisional) | 37.2 C (99.0 F) | tie | 72 years | 7 of 100 (Routine) |
| 18 September 2026 | Clearwater Dam, US | daily high max (Provisional) | 36.7 C (98.1 F) | 1.1 C (2.0 F) | 72 years | 31 of 100 (Routine) |
| 18 September 2026 | Clearwater Dam, US | daily high min (Tie, Provisional) | 21.7 C (71.1 F) | tie | 48 years | 5 of 100 (Routine) |
| 17 September 2026 | Clearwater Dam, US | daily high max (Provisional) | 36.7 C (98.1 F) | 1.1 C (2.0 F) | 72 years | 31 of 100 (Routine) |
| 17 September 2026 | Clearwater Dam, US | daily high min (Provisional) | 21.7 C (71.1 F) | 0.6 C (1.1 F) | 53 years | 25 of 100 (Routine) |
| 16 September 2026 | Clearwater Dam, US | daily high max (Provisional) | 37.2 C (99.0 F) | 1.1 C (2.0 F) | 72 years | 31 of 100 (Routine) |
| 16 September 2026 | Clearwater Dam, US | daily high min (Provisional) | 21.7 C (71.1 F) | 1.1 C (2.0 F) | 35 years | 20 of 100 (Routine) |
| 11 September 2026 | Clearwater Dam, US | daily high min (Tie, Provisional) | 22.2 C (72.0 F) | tie | 79 years | 7 of 100 (Routine) |
| 6 September 2026 | Clearwater Dam, US | daily high min (Provisional) | 22.8 C (73.0 F) | 1.7 C (3.1 F) | 48 years | 25 of 100 (Routine) |
| 5 September 2026 | Clearwater Dam, US | daily high min (Provisional) | 22.8 C (73.0 F) | 1.7 C (3.1 F) | 36 years | 21 of 100 (Routine) |
| 20 August 2026 | Clearwater Dam, US | daily rain (Provisional) | 47.0 mm (1.9 in) | 8.9 mm (0.35 in) | 16 years | 18 of 100 (Routine) |
| 17 August 2026 | Clearwater Dam, US | daily high min (Tie, Provisional) | 23.3 C (73.9 F) | tie | 39 years | 4 of 100 (Routine) |
| 28 July 2026 | Clearwater Dam, US | daily high min | 24.4 C (75.9 F) | 1.1 C (2.0 F) | 79 years | 34 of 100 (Routine) |
| 21 July 2026 | Clearwater Dam, US | daily high min (Tie) | 23.3 C (73.9 F) | tie | 77 years | 7 of 100 (Routine) |
| 17 July 2026 | Clearwater Dam, US | daily rain | 70.4 mm (2.8 in) | 15.3 mm (0.6 in) | 33 years | 29 of 100 (Routine) |
| 23 June 2026 | Clearwater Dam, US | daily low max | 20.6 C (69.1 F) | 3.8 C (6.8 F) | 21 years | 24 of 100 (Routine) |
Climate Trend
57 complete years, 1948 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1948 | 14.2 C | +0.45 C |
| 1949 | 14.7 C | +0.95 C |
| 1950 | 13.8 C | +0.05 C |
| 1951 | 13.9 C | +0.20 C |
| 1952 | 14.7 C | +1.03 C |
| 1954 | 15.1 C | +1.41 C |
| 1955 | 14.4 C | +0.70 C |
| 1956 | 15.0 C | +1.24 C |
| 1957 | 14.4 C | +0.69 C |
| 1958 | 13.2 C | -0.49 C |
| 1959 | 14.0 C | +0.25 C |
| 1960 | 13.2 C | -0.48 C |
| 1961 | 13.4 C | -0.31 C |
| 1962 | 13.9 C | +0.23 C |
| 1963 | 14.1 C | +0.36 C |
| 1964 | 14.2 C | +0.49 C |
| 1965 | 14.7 C | +0.94 C |
| 1966 | 13.6 C | -0.11 C |
| 1967 | 14.2 C | +0.53 C |
| 1968 | 13.1 C | -0.62 C |
| 1969 | 12.7 C | -0.99 C |
| 1970 | 12.7 C | -1.02 C |
| 1971 | 13.1 C | -0.66 C |
| 1972 | 12.6 C | -1.11 C |
| 1974 | 13.1 C | -0.64 C |
| 1977 | 13.5 C | -0.25 C |
| 1978 | 12.5 C | -1.23 C |
| 1979 | 12.0 C | -1.73 C |
| 1981 | 13.4 C | -0.35 C |
| 1982 | 13.0 C | -0.72 C |
| 1983 | 13.2 C | -0.53 C |
| 1984 | 13.3 C | -0.41 C |
| 1985 | 12.8 C | -0.96 C |
| 1986 | 13.9 C | +0.23 C |
| 1987 | 14.2 C | +0.46 C |
| 1988 | 13.0 C | -0.73 C |
| 1989 | 12.6 C | -1.14 C |
| 1990 | 14.4 C | +0.67 C |
| 1991 | 14.6 C | +0.88 C |
| 1992 | 13.6 C | -0.14 C |
| 1996 | 12.5 C | -1.24 C |
| 1997 | 12.5 C | -1.17 C |
| 1998 | 14.6 C | +0.93 C |
| 2008 | 12.8 C | -0.88 C |
| 2009 | 13.0 C | -0.67 C |
| 2011 | 13.8 C | +0.12 C |
| 2012 | 15.3 C | +1.54 C |
| 2015 | 13.6 C | -0.16 C |
| 2016 | 14.4 C | +0.70 C |
| 2017 | 14.7 C | +1.02 C |
| 2018 | 13.7 C | 0.00 C |
| 2019 | 13.7 C | +0.02 C |
| 2020 | 13.9 C | +0.22 C |
| 2021 | 13.8 C | +0.10 C |
| 2023 | 14.5 C | +0.75 C |
| 2024 | 15.1 C | +1.41 C |
| 2025 | 14.1 C | +0.43 C |
The fitted trend in annual mean temperature here over 1948 to 2025 is 0.01 C (-0.08 to 0.10) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.01 F (-0.15 to 0.17) per decade. The slope is a straight line fitted to 57 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.01 C (-0.08 to 0.10) per decade | 0.01 F (-0.15 to 0.17) per decade | 1948 to 2025 | 57 | Not clearly different from zero |
| Mean daily maximum | -0.14 C (-0.25 to -0.04) per decade | -0.3 F (-0.5 to -0.1) per decade | 1948 to 2025 | 57 | Fall |
| Mean daily minimum | 0.2 C (0.1 to 0.3) per decade | 0.3 F (0.1 to 0.5) per decade | 1948 to 2025 | 57 | 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
1946 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.3 C (109.9 F) | 1980 | 37.8 C (100.0 F) | 81 |
| Coldest night (TNn) | -28.3 C (-18.9 F) | 1963 | -17.8 C (0.0 F) | 81 |
| Wettest day (Rx1day) | 205.7 mm (8.1 in) | 2005 | 75.4 mm (3.0 in) | 81 |
| Wettest five days (Rx5day) | 285.3 mm (11.2 in) | 2008 | 108.5 mm (4.3 in) | 81 |
| Longest dry spell (CDD) | 52 days | 1963 | 19 days | 81 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1946 | 26.7 C (80.1 F) |
| 1947 | 40.6 C (105.1 F) |
| 1948 | 37.8 C (100.0 F) |
| 1949 | 35.6 C (96.1 F) |
| 1950 | 33.3 C (91.9 F) |
| 1951 | 37.2 C (99.0 F) |
| 1952 | 41.1 C (106.0 F) |
| 1953 | 40.6 C (105.1 F) |
| 1954 | 42.8 C (109.0 F) |
| 1955 | 37.8 C (100.0 F) |
| 1956 | 37.2 C (99.0 F) |
| 1957 | 37.2 C (99.0 F) |
| 1958 | 35.6 C (96.1 F) |
| 1959 | 37.8 C (100.0 F) |
| 1960 | 38.9 C (102.0 F) |
| 1961 | 36.1 C (97.0 F) |
| 1962 | 41.7 C (107.1 F) |
| 1963 | 36.7 C (98.1 F) |
| 1964 | 37.8 C (100.0 F) |
| 1965 | 37.8 C (100.0 F) |
| 1966 | 40.6 C (105.1 F) |
| 1967 | 36.7 C (98.1 F) |
| 1968 | 35.6 C (96.1 F) |
| 1969 | 38.9 C (102.0 F) |
| 1970 | 36.1 C (97.0 F) |
| 1971 | 37.2 C (99.0 F) |
| 1972 | 36.1 C (97.0 F) |
| 1973 | 35.0 C (95.0 F) |
| 1974 | 38.9 C (102.0 F) |
| 1975 | 33.3 C (91.9 F) |
| 1976 | 37.8 C (100.0 F) |
| 1977 | 38.3 C (100.9 F) |
| 1978 | 37.8 C (100.0 F) |
| 1979 | 36.7 C (98.1 F) |
| 1980 | 43.3 C (109.9 F) |
| 1981 | 37.2 C (99.0 F) |
| 1982 | 38.3 C (100.9 F) |
| 1983 | 40.0 C (104.0 F) |
| 1984 | 40.0 C (104.0 F) |
| 1985 | 37.8 C (100.0 F) |
| 1986 | 37.8 C (100.0 F) |
| 1987 | 38.9 C (102.0 F) |
| 1988 | 38.9 C (102.0 F) |
| 1989 | 36.1 C (97.0 F) |
| 1990 | 38.9 C (102.0 F) |
| 1991 | 40.6 C (105.1 F) |
| 1992 | 35.6 C (96.1 F) |
| 1993 | 38.3 C (100.9 F) |
| 1994 | 36.1 C (97.0 F) |
| 1995 | 38.3 C (100.9 F) |
| 1996 | 38.3 C (100.9 F) |
| 1997 | 37.8 C (100.0 F) |
| 1998 | 39.4 C (102.9 F) |
| 1999 | 41.7 C (107.1 F) |
| 2000 | 38.9 C (102.0 F) |
| 2001 | 37.8 C (100.0 F) |
| 2002 | 37.2 C (99.0 F) |
| 2003 | 38.9 C (102.0 F) |
| 2004 | 38.3 C (100.9 F) |
| 2005 | 38.3 C (100.9 F) |
| 2006 | 37.8 C (100.0 F) |
| 2007 | 40.6 C (105.1 F) |
| 2008 | 37.2 C (99.0 F) |
| 2009 | 35.0 C (95.0 F) |
| 2010 | 37.2 C (99.0 F) |
| 2011 | 41.1 C (106.0 F) |
| 2012 | 42.8 C (109.0 F) |
| 2013 | 36.7 C (98.1 F) |
| 2014 | 36.7 C (98.1 F) |
| 2015 | 33.9 C (93.0 F) |
| 2016 | 37.2 C (99.0 F) |
| 2017 | 37.8 C (100.0 F) |
| 2018 | 36.7 C (98.1 F) |
| 2019 | 35.0 C (95.0 F) |
| 2020 | 35.6 C (96.1 F) |
| 2021 | 35.6 C (96.1 F) |
| 2022 | 39.4 C (102.9 F) |
| 2023 | 39.4 C (102.9 F) |
| 2024 | 36.7 C (98.1 F) |
| 2025 | 37.2 C (99.0 F) |
| 2026 | 38.9 C (102.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1946 | -10.6 C (12.9 F) |
| 1947 | -21.7 C (-7.1 F) |
| 1948 | -16.7 C (1.9 F) |
| 1949 | -16.1 C (3.0 F) |
| 1950 | -18.3 C (-0.9 F) |
| 1951 | -27.8 C (-18.0 F) |
| 1952 | -12.8 C (9.0 F) |
| 1953 | -16.7 C (1.9 F) |
| 1954 | -13.9 C (7.0 F) |
| 1955 | -19.4 C (-2.9 F) |
| 1956 | -12.8 C (9.0 F) |
| 1957 | -17.8 C (0.0 F) |
| 1958 | -19.4 C (-2.9 F) |
| 1959 | -21.1 C (-6.0 F) |
| 1960 | -21.7 C (-7.1 F) |
| 1961 | -24.4 C (-11.9 F) |
| 1962 | -23.9 C (-11.0 F) |
| 1963 | -28.3 C (-18.9 F) |
| 1964 | -17.8 C (0.0 F) |
| 1965 | -20.0 C (-4.0 F) |
| 1966 | -19.4 C (-2.9 F) |
| 1967 | -16.1 C (3.0 F) |
| 1968 | -19.4 C (-2.9 F) |
| 1969 | -15.0 C (5.0 F) |
| 1970 | -19.4 C (-2.9 F) |
| 1971 | -17.2 C (1.0 F) |
| 1972 | -18.9 C (-2.0 F) |
| 1973 | -16.7 C (1.9 F) |
| 1974 | -17.8 C (0.0 F) |
| 1975 | -13.3 C (8.1 F) |
| 1976 | -19.4 C (-2.9 F) |
| 1977 | -27.8 C (-18.0 F) |
| 1978 | -17.8 C (0.0 F) |
| 1979 | -20.6 C (-5.1 F) |
| 1980 | -16.1 C (3.0 F) |
| 1981 | -20.0 C (-4.0 F) |
| 1982 | -26.1 C (-15.0 F) |
| 1983 | -25.0 C (-13.0 F) |
| 1984 | -25.0 C (-13.0 F) |
| 1985 | -27.8 C (-18.0 F) |
| 1986 | -18.3 C (-0.9 F) |
| 1987 | -11.1 C (12.0 F) |
| 1988 | -20.0 C (-4.0 F) |
| 1989 | -22.8 C (-9.0 F) |
| 1990 | -16.1 C (3.0 F) |
| 1991 | -15.0 C (5.0 F) |
| 1992 | -16.1 C (3.0 F) |
| 1993 | -17.8 C (0.0 F) |
| 1994 | -22.8 C (-9.0 F) |
| 1995 | -17.8 C (0.0 F) |
| 1996 | -21.1 C (-6.0 F) |
| 1997 | -20.0 C (-4.0 F) |
| 1998 | -15.0 C (5.0 F) |
| 1999 | -19.4 C (-2.9 F) |
| 2000 | -17.8 C (0.0 F) |
| 2001 | -19.4 C (-2.9 F) |
| 2002 | -15.0 C (5.0 F) |
| 2003 | -20.6 C (-5.1 F) |
| 2004 | -20.6 C (-5.1 F) |
| 2005 | -15.0 C (5.0 F) |
| 2006 | -16.7 C (1.9 F) |
| 2007 | -17.8 C (0.0 F) |
| 2008 | -16.7 C (1.9 F) |
| 2009 | -17.2 C (1.0 F) |
| 2010 | -18.3 C (-0.9 F) |
| 2011 | -17.8 C (0.0 F) |
| 2012 | -11.7 C (10.9 F) |
| 2013 | -13.9 C (7.0 F) |
| 2014 | -21.7 C (-7.1 F) |
| 2015 | -20.0 C (-4.0 F) |
| 2016 | -13.9 C (7.0 F) |
| 2017 | -16.1 C (3.0 F) |
| 2018 | -20.0 C (-4.0 F) |
| 2019 | -13.9 C (7.0 F) |
| 2020 | -12.8 C (9.0 F) |
| 2021 | -20.6 C (-5.1 F) |
| 2022 | -21.1 C (-6.0 F) |
| 2023 | -8.3 C (17.1 F) |
| 2024 | -18.9 C (-2.0 F) |
| 2025 | -17.8 C (0.0 F) |
| 2026 | -17.8 C (0.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1946 | 40.6 mm (1.6 in) |
| 1947 | 58.4 mm (2.3 in) |
| 1948 | 100.1 mm (3.9 in) |
| 1949 | 59.7 mm (2.4 in) |
| 1950 | 99.6 mm (3.9 in) |
| 1951 | 72.6 mm (2.9 in) |
| 1952 | 88.9 mm (3.5 in) |
| 1953 | 44.7 mm (1.8 in) |
| 1954 | 65.3 mm (2.6 in) |
| 1955 | 88.9 mm (3.5 in) |
| 1956 | 78.7 mm (3.1 in) |
| 1957 | 118.1 mm (4.6 in) |
| 1958 | 94.0 mm (3.7 in) |
| 1959 | 79.8 mm (3.1 in) |
| 1960 | 65.3 mm (2.6 in) |
| 1961 | 72.1 mm (2.8 in) |
| 1962 | 62.5 mm (2.5 in) |
| 1963 | 73.9 mm (2.9 in) |
| 1964 | 103.1 mm (4.1 in) |
| 1965 | 86.1 mm (3.4 in) |
| 1966 | 118.9 mm (4.7 in) |
| 1967 | 48.8 mm (1.9 in) |
| 1968 | 75.7 mm (3.0 in) |
| 1969 | 78.0 mm (3.1 in) |
| 1970 | 44.5 mm (1.8 in) |
| 1971 | 67.8 mm (2.7 in) |
| 1972 | 60.5 mm (2.4 in) |
| 1973 | 75.4 mm (3.0 in) |
| 1974 | 52.3 mm (2.1 in) |
| 1975 | 52.6 mm (2.1 in) |
| 1976 | 77.0 mm (3.0 in) |
| 1977 | 97.3 mm (3.8 in) |
| 1978 | 69.9 mm (2.8 in) |
| 1979 | 72.9 mm (2.9 in) |
| 1980 | 79.5 mm (3.1 in) |
| 1981 | 72.9 mm (2.9 in) |
| 1982 | 151.1 mm (5.9 in) |
| 1983 | 131.6 mm (5.2 in) |
| 1984 | 84.8 mm (3.3 in) |
| 1985 | 68.1 mm (2.7 in) |
| 1986 | 74.9 mm (2.9 in) |
| 1987 | 48.3 mm (1.9 in) |
| 1988 | 63.5 mm (2.5 in) |
| 1989 | 76.2 mm (3.0 in) |
| 1990 | 71.1 mm (2.8 in) |
| 1991 | 76.2 mm (3.0 in) |
| 1992 | 88.9 mm (3.5 in) |
| 1993 | 37.6 mm (1.5 in) |
| 1994 | 106.7 mm (4.2 in) |
| 1995 | 45.0 mm (1.8 in) |
| 1996 | 99.1 mm (3.9 in) |
| 1997 | 63.5 mm (2.5 in) |
| 1998 | 86.4 mm (3.4 in) |
| 1999 | 88.9 mm (3.5 in) |
| 2000 | 132.6 mm (5.2 in) |
| 2001 | 73.7 mm (2.9 in) |
| 2002 | 88.9 mm (3.5 in) |
| 2003 | 79.5 mm (3.1 in) |
| 2004 | 51.6 mm (2.0 in) |
| 2005 | 205.7 mm (8.1 in) |
| 2006 | 68.6 mm (2.7 in) |
| 2007 | 152.4 mm (6.0 in) |
| 2008 | 205.7 mm (8.1 in) |
| 2009 | 89.7 mm (3.5 in) |
| 2010 | 55.4 mm (2.2 in) |
| 2011 | 101.1 mm (4.0 in) |
| 2012 | 58.2 mm (2.3 in) |
| 2013 | 103.9 mm (4.1 in) |
| 2014 | 91.9 mm (3.6 in) |
| 2015 | 71.1 mm (2.8 in) |
| 2016 | 137.2 mm (5.4 in) |
| 2017 | 141.5 mm (5.6 in) |
| 2018 | 53.3 mm (2.1 in) |
| 2019 | 58.2 mm (2.3 in) |
| 2020 | 102.6 mm (4.0 in) |
| 2021 | 38.1 mm (1.5 in) |
| 2022 | 44.2 mm (1.7 in) |
| 2023 | 92.7 mm (3.6 in) |
| 2024 | 71.6 mm (2.8 in) |
| 2025 | 44.7 mm (1.8 in) |
| 2026 | 70.4 mm (2.8 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1946 | 62.7 mm (2.5 in) |
| 1947 | 78.7 mm (3.1 in) |
| 1948 | 118.3 mm (4.7 in) |
| 1949 | 114.1 mm (4.5 in) |
| 1950 | 119.4 mm (4.7 in) |
| 1951 | 94.0 mm (3.7 in) |
| 1952 | 88.9 mm (3.5 in) |
| 1953 | 61.7 mm (2.4 in) |
| 1954 | 85.3 mm (3.4 in) |
| 1955 | 105.2 mm (4.1 in) |
| 1956 | 96.2 mm (3.8 in) |
| 1957 | 189.7 mm (7.5 in) |
| 1958 | 189.3 mm (7.5 in) |
| 1959 | 108.5 mm (4.3 in) |
| 1960 | 98.8 mm (3.9 in) |
| 1961 | 129.1 mm (5.1 in) |
| 1962 | 115.1 mm (4.5 in) |
| 1963 | 99.3 mm (3.9 in) |
| 1964 | 145.3 mm (5.7 in) |
| 1965 | 117.7 mm (4.6 in) |
| 1966 | 133.9 mm (5.3 in) |
| 1967 | 82.9 mm (3.3 in) |
| 1968 | 127.3 mm (5.0 in) |
| 1969 | 94.3 mm (3.7 in) |
| 1970 | 86.3 mm (3.4 in) |
| 1971 | 131.3 mm (5.2 in) |
| 1972 | 105.1 mm (4.1 in) |
| 1973 | 144.7 mm (5.7 in) |
| 1974 | 99.5 mm (3.9 in) |
| 1975 | 105.5 mm (4.2 in) |
| 1976 | 108.5 mm (4.3 in) |
| 1977 | 121.5 mm (4.8 in) |
| 1978 | 95.0 mm (3.7 in) |
| 1979 | 105.2 mm (4.1 in) |
| 1980 | 104.4 mm (4.1 in) |
| 1981 | 103.4 mm (4.1 in) |
| 1982 | 272.0 mm (10.7 in) |
| 1983 | 176.8 mm (7.0 in) |
| 1984 | 99.1 mm (3.9 in) |
| 1985 | 113.8 mm (4.5 in) |
| 1986 | 105.6 mm (4.2 in) |
| 1987 | 106.2 mm (4.2 in) |
| 1988 | 96.1 mm (3.8 in) |
| 1989 | 119.2 mm (4.7 in) |
| 1990 | 104.1 mm (4.1 in) |
| 1991 | 128.8 mm (5.1 in) |
| 1992 | 159.3 mm (6.3 in) |
| 1993 | 49.1 mm (1.9 in) |
| 1994 | 114.3 mm (4.5 in) |
| 1995 | 97.0 mm (3.8 in) |
| 1996 | 101.6 mm (4.0 in) |
| 1997 | 89.4 mm (3.5 in) |
| 1998 | 135.1 mm (5.3 in) |
| 1999 | 88.9 mm (3.5 in) |
| 2000 | 153.1 mm (6.0 in) |
| 2001 | 85.9 mm (3.4 in) |
| 2002 | 139.7 mm (5.5 in) |
| 2003 | 114.3 mm (4.5 in) |
| 2004 | 92.5 mm (3.6 in) |
| 2005 | 215.4 mm (8.5 in) |
| 2006 | 114.8 mm (4.5 in) |
| 2007 | 153.9 mm (6.1 in) |
| 2008 | 285.3 mm (11.2 in) |
| 2009 | 142.8 mm (5.6 in) |
| 2010 | 92.4 mm (3.6 in) |
| 2011 | 280.7 mm (11.1 in) |
| 2012 | 72.4 mm (2.9 in) |
| 2013 | 117.9 mm (4.6 in) |
| 2014 | 109.2 mm (4.3 in) |
| 2015 | 112.8 mm (4.4 in) |
| 2016 | 92.9 mm (3.7 in) |
| 2017 | 81.2 mm (3.2 in) |
| 2018 | 118.4 mm (4.7 in) |
| 2019 | 115.9 mm (4.6 in) |
| 2020 | 148.1 mm (5.8 in) |
| 2021 | 62.5 mm (2.5 in) |
| 2022 | 87.9 mm (3.5 in) |
| 2023 | 142.0 mm (5.6 in) |
| 2024 | 115.5 mm (4.5 in) |
| 2025 | 56.7 mm (2.2 in) |
| 2026 | 96.8 mm (3.8 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1946 | 15 days |
| 1947 | 32 days |
| 1948 | 23 days |
| 1949 | 21 days |
| 1950 | 19 days |
| 1951 | 15 days |
| 1952 | 26 days |
| 1953 | 31 days |
| 1954 | 19 days |
| 1955 | 27 days |
| 1956 | 21 days |
| 1957 | 20 days |
| 1958 | 21 days |
| 1959 | 19 days |
| 1960 | 13 days |
| 1961 | 14 days |
| 1962 | 22 days |
| 1963 | 52 days |
| 1964 | 40 days |
| 1965 | 19 days |
| 1966 | 18 days |
| 1967 | 28 days |
| 1968 | 23 days |
| 1969 | 19 days |
| 1970 | 24 days |
| 1971 | 16 days |
| 1972 | 15 days |
| 1973 | 15 days |
| 1974 | 28 days |
| 1975 | 13 days |
| 1976 | 28 days |
| 1977 | 30 days |
| 1978 | 17 days |
| 1979 | 23 days |
| 1980 | 29 days |
| 1981 | 20 days |
| 1982 | 15 days |
| 1983 | 20 days |
| 1984 | 16 days |
| 1985 | 22 days |
| 1986 | 23 days |
| 1987 | 17 days |
| 1988 | 15 days |
| 1989 | 20 days |
| 1990 | 17 days |
| 1991 | 19 days |
| 1992 | 21 days |
| 1993 | 12 days |
| 1994 | 16 days |
| 1995 | 21 days |
| 1996 | 18 days |
| 1997 | 18 days |
| 1998 | 32 days |
| 1999 | 26 days |
| 2000 | 14 days |
| 2001 | 16 days |
| 2002 | 19 days |
| 2003 | 18 days |
| 2004 | 39 days |
| 2005 | 21 days |
| 2006 | 17 days |
| 2007 | 31 days |
| 2008 | 13 days |
| 2009 | 24 days |
| 2010 | 27 days |
| 2011 | 16 days |
| 2012 | 15 days |
| 2013 | 14 days |
| 2014 | 18 days |
| 2015 | 13 days |
| 2016 | 29 days |
| 2017 | 13 days |
| 2018 | 15 days |
| 2019 | 17 days |
| 2020 | 25 days |
| 2021 | 11 days |
| 2022 | 17 days |
| 2023 | 13 days |
| 2024 | 18 days |
| 2025 | 15 days |
| 2026 | 17 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
57 years with a frostAcross 57 years with a frost, the median last spring frost at Clearwater Dam falls on 13 April and the median first autumn frost on 21 October, which leaves a median of 190 days between them.
Fitted over all years, the growing season changes by +3.2 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1979 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 13 April | n/a | 13 April | n/a | -1.6 days per decade |
| First autumn frost | 21 October | n/a | 22 October | n/a | +1.5 days per decade |
| Growing days | 190 days | n/a | 190 days | n/a | +3.2 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, 1947 to 2020A day with at least 76.1 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 212.6 mm (8.4 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 76.1 mm (3.0 in) | |
| 5 years | 102.3 mm (4.0 in) | |
| 10 years | 123.2 mm (4.9 in) | |
| 25 years | 154.4 mm (6.1 in) | |
| 50 years | 181.6 mm (7.1 in) | |
| 100 years | 212.6 mm (8.4 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 1947 to 2020.
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: 205.7 mm (8.1 in) in 2005; 205.7 mm (8.1 in) in 2008; 152.4 mm (6.0 in) in 2007.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Clearwater Dam, at 1974 and 1996. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1974 ran 0.5 C (0.9 F) higher than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1996 ran 0.3 C (0.6 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1974 | +0.5 | +0.9 | likely | 5 |
| 1996 | -0.3 | -0.6 | 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
1998 to 2025 against 1961 to 1990Over 1998 to 2025, Clearwater Dam had a mean temperature of 14.1 C (57.3 F) and 1,309.5 mm (51.6 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Clarksville Wwtp (United States, 311 km away), Paris 3 ESE (United States, 243 km away) and Lebanon (United States, 410 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Clarksville Wwtp | United States | 311 km (193 mi) | 14.1 C (57.4 F) | 1,281.8 mm (50.5 in) | 0.40 |
| Paris 3 ESE | United States | 243 km (151 mi) | 13.9 C (57.1 F) | 1,331.0 mm (52.4 in) | 0.44 |
| Lebanon | United States | 410 km (255 mi) | 14.2 C (57.5 F) | 1,319.3 mm (51.9 in) | 0.44 |
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-14).