Waukon 3NNE Weather Records (USC00138755)
Record envelope, standing records and threshold days for Waukon 3NNE (USC00138755), Iowa, United States, with 93 years of record.
Key Facts for Waukon 3NNE
- Waukon 3NNE (USC00138755) is a weather station in Iowa, United States at 43.32 latitude and -91.45 longitude, 387 m (1,271 ft) above sea level.
- The station reports from 1934 to 2026, 93 years of record.
- 1,464 records set at Waukon 3NNE still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Waukon 3NNE set a daily record precipitation of 27.4 mm (1.1 in) on 1 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Iowa, United States, 43.32 latitude, -91.45 longitude.
- Elevation: 387 m (1,271 ft).
- Period of record: 1934 to 2026, 93 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
8 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 15.0 C (59.0 F) | -35.0 C (-31.0 F) | 9.4 C (48.9 F) | -31.1 C (-24.0 F) |
| Feb | 20.0 C (68.0 F) | -36.7 C (-34.1 F) | 16.1 C (61.0 F) | -18.9 C (-2.0 F) |
| Mar | 27.8 C (82.0 F) | -29.4 C (-20.9 F) | 26.7 C (80.1 F) | -17.8 C (0.0 F) |
| Apr | 32.8 C (91.0 F) | -15.0 C (5.0 F) | 26.7 C (80.1 F) | -6.7 C (19.9 F) |
| May | 33.3 C (91.9 F) | -4.4 C (24.1 F) | 30.0 C (86.0 F) | -1.1 C (30.0 F) |
| Jun | 35.6 C (96.1 F) | 0.0 C (32.0 F) | 31.7 C (89.1 F) | 9.4 C (48.9 F) |
| Jul | 41.1 C (106.0 F) | 4.4 C (39.9 F) | 34.4 C (93.9 F) | 11.7 C (53.1 F) |
| Aug | 37.8 C (100.0 F) | 3.3 C (37.9 F) | 28.9 C (84.0 F) | 11.1 C (52.0 F) |
| Sep | 37.2 C (99.0 F) | -3.9 C (25.0 F) | 30.6 C (87.1 F) | 7.2 C (45.0 F) |
| Oct | 32.8 C (91.0 F) | -9.4 C (15.1 F) | 28.3 C (82.9 F) | 5.0 C (41.0 F) |
| Nov | 23.9 C (75.0 F) | -25.0 C (-13.0 F) | n/a | n/a |
| Dec | 17.2 C (63.0 F) | -32.8 C (-27.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1934 | 3 |
| 1935 | 22 |
| 1936 | 57 |
| 1937 | 27 |
| 1938 | 19 |
| 1939 | 39 |
| 1940 | 31 |
| 1941 | 26 |
| 1942 | 27 |
| 1943 | 29 |
| 1944 | 4 |
| 1945 | 18 |
| 1946 | 21 |
| 1947 | 37 |
| 1948 | 16 |
| 1949 | 15 |
| 1950 | 24 |
| 1951 | 27 |
| 1952 | 19 |
| 1953 | 14 |
| 1954 | 11 |
| 1955 | 18 |
| 1956 | 11 |
| 1957 | 7 |
| 1958 | 11 |
| 1959 | 13 |
| 1960 | 11 |
| 1961 | 12 |
| 1962 | 25 |
| 1963 | 23 |
| 1964 | 21 |
| 1965 | 17 |
| 1966 | 19 |
| 1967 | 26 |
| 1968 | 17 |
| 1969 | 9 |
| 1970 | 16 |
| 1971 | 22 |
| 1972 | 22 |
| 1973 | 21 |
| 1974 | 20 |
| 1975 | 16 |
| 1976 | 18 |
| 1977 | 24 |
| 1978 | 5 |
| 1979 | 12 |
| 1980 | 9 |
| 1981 | 18 |
| 1982 | 9 |
| 1983 | 25 |
| 1984 | 8 |
| 1985 | 11 |
| 1986 | 18 |
| 1987 | 12 |
| 1988 | 17 |
| 1989 | 18 |
| 1990 | 23 |
| 1991 | 31 |
| 1992 | 15 |
| 1993 | 13 |
| 1994 | 16 |
| 1995 | 18 |
| 1996 | 18 |
| 1997 | 10 |
| 1998 | 11 |
| 1999 | 5 |
| 2000 | 16 |
| 2001 | 9 |
| 2002 | 13 |
| 2003 | 13 |
| 2004 | 23 |
| 2005 | 12 |
| 2006 | 20 |
| 2007 | 15 |
| 2008 | 8 |
| 2009 | 12 |
| 2010 | 11 |
| 2011 | 14 |
| 2012 | 30 |
| 2013 | 5 |
| 2022 | 1 |
| 2023 | 10 |
| 2024 | 15 |
| 2025 | 14 |
| 2026 | 16 |
All-Time Record Progression
4 new records| Date | Kind | Detail |
|---|---|---|
| 1991-06-27 | Record high minimum temperature | Record high minimum temperature 30.0 C (86.0 F) |
| 1996-02-02 | Record low minimum temperature | Record low minimum temperature -36.7 C (-34.1 F) |
| 1996-02-03 | Record low maximum temperature | Record low maximum temperature -26.7 C (-16.1 F) |
| 2008-01-26 | Record snow depth | Record snow depth 63.5 cm (25.0 in) |
Wettest Day of Each Month
May: 151.9 mm (6.0 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 43.2 mm (1.7 in) | 18 January 1996 |
| Feb | 53.3 mm (2.1 in) | 20 February 2005 |
| Mar | 67.6 mm (2.7 in) | 26 March 1950 |
| Apr | 105.9 mm (4.2 in) | 4 April 1981 |
| May | 151.9 mm (6.0 in) | 30 May 1941 |
| Jun | 110.7 mm (4.4 in) | 8 June 2008 |
| Jul | 113.3 mm (4.5 in) | 16 July 1950 |
| Aug | 119.9 mm (4.7 in) | 6 August 1951 |
| Sep | 95.5 mm (3.8 in) | 5 September 1985 |
| Oct | 55.9 mm (2.2 in) | 23 October 2020 |
| Nov | 87.6 mm (3.4 in) | 1 November 1991 |
| Dec | 45.7 mm (1.8 in) | 2 December 2007 |
Period of Record Coverage
1934 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1934 | 92 | 25% | No |
| 1935 | 362 | 99% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 364 | 100% | Yes |
| 1938 | 364 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 364 | 99% | Yes |
| 1941 | 363 | 99% | Yes |
| 1942 | 332 | 91% | Yes |
| 1943 | 333 | 91% | Yes |
| 1944 | 152 | 42% | No |
| 1945 | 332 | 91% | Yes |
| 1946 | 362 | 99% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 324 | 89% | No |
| 1949 | 362 | 99% | Yes |
| 1950 | 361 | 99% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 355 | 97% | Yes |
| 1954 | 358 | 98% | Yes |
| 1955 | 364 | 100% | Yes |
| 1956 | 361 | 99% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 363 | 99% | Yes |
| 1961 | 363 | 99% | Yes |
| 1962 | 363 | 99% | Yes |
| 1963 | 335 | 92% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 348 | 95% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 363 | 99% | Yes |
| 1970 | 363 | 99% | Yes |
| 1971 | 360 | 99% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 364 | 100% | Yes |
| 1974 | 364 | 100% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 363 | 99% | Yes |
| 1977 | 359 | 98% | Yes |
| 1978 | 348 | 95% | Yes |
| 1979 | 363 | 99% | Yes |
| 1980 | 364 | 99% | Yes |
| 1981 | 359 | 98% | Yes |
| 1982 | 338 | 93% | Yes |
| 1983 | 361 | 99% | Yes |
| 1984 | 363 | 99% | Yes |
| 1985 | 360 | 99% | Yes |
| 1986 | 359 | 98% | Yes |
| 1987 | 358 | 98% | Yes |
| 1988 | 357 | 98% | Yes |
| 1989 | 361 | 99% | Yes |
| 1990 | 356 | 98% | Yes |
| 1991 | 347 | 95% | Yes |
| 1992 | 347 | 95% | Yes |
| 1993 | 316 | 87% | No |
| 1994 | 361 | 99% | Yes |
| 1995 | 361 | 99% | Yes |
| 1996 | 360 | 98% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 158 | 43% | No |
| 1999 | 183 | 50% | No |
| 2000 | 325 | 89% | No |
| 2001 | 306 | 84% | No |
| 2002 | 339 | 93% | Yes |
| 2003 | 350 | 96% | Yes |
| 2004 | 347 | 95% | Yes |
| 2005 | 357 | 98% | Yes |
| 2006 | 338 | 93% | Yes |
| 2007 | 353 | 97% | Yes |
| 2008 | 364 | 99% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 362 | 99% | Yes |
| 2011 | 340 | 93% | Yes |
| 2012 | 340 | 93% | Yes |
| 2013 | 79 | 22% | No |
| 2022 | 133 | 36% | No |
| 2023 | 364 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 278 | 76% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 1 October 2026 | Waukon 3NNE, US | daily rain (Provisional) | 27.4 mm (1.1 in) | 6.8 mm (0.27 in) | 19 years | 21 of 100 (Routine) |
| 19 September 2026 | Waukon 3NNE, US | monthly rain (Provisional) | 104.1 mm (4.1 in) | 8.6 mm (0.34 in) | 41 years | 37 of 100 (Notable) |
| 1 August 2026 | Waukon 3NNE, US | daily low max | 19.4 C (66.9 F) | 1.7 C (3.1 F) | 53 years | 29 of 100 (Routine) |
| 28 July 2026 | Waukon 3NNE, US | daily high max (Tie) | 34.4 C (93.9 F) | tie | 84 years | 8 of 100 (Routine) |
| 16 July 2026 | Waukon 3NNE, US | daily high min | 22.2 C (72.0 F) | 0.5 C (0.9 F) | 84 years | 35 of 100 (Notable) |
| 30 June 2026 | Waukon 3NNE, US | daily high min | 25.0 C (77.0 F) | 1.1 C (2.0 F) | 35 years | 21 of 100 (Routine) |
| 6 June 2026 | Waukon 3NNE, US | daily rain (Tie) | 28.4 mm (1.1 in) | tie | 84 years | 8 of 100 (Routine) |
| 24 April 2026 | Waukon 3NNE, US | daily rain | 42.9 mm (1.7 in) | 2.3 mm (0.09 in) | 71 years | 31 of 100 (Routine) |
| 15 April 2026 | Waukon 3NNE, US | daily high min | 13.3 C (55.9 F) | 1.1 C (2.0 F) | 49 years | 25 of 100 (Routine) |
| 22 March 2026 | Waukon 3NNE, US | daily high max | 26.7 C (80.1 F) | 1.1 C (2.0 F) | 91 years | 37 of 100 (Notable) |
| 18 March 2026 | Waukon 3NNE, US | daily low max | -6.1 C (21.0 F) | 0.5 C (0.9 F) | 84 years | 34 of 100 (Routine) |
| 16 March 2026 | Waukon 3NNE, US | daily snowfall | 12.7 cm (5.0 in) | 5.1 cm (2.0 in) | 76 years | 41 of 100 (Notable) |
| 10 March 2026 | Waukon 3NNE, US | daily high max | 20.0 C (68.0 F) | 3.9 C (7.0 F) | 48 years | 28 of 100 (Routine) |
| 7 March 2026 | Waukon 3NNE, US | daily rain | 14.5 mm (0.6 in) | 5.9 mm (0.23 in) | 51 years | 20 of 100 (Routine) |
| 23 February 2026 | Waukon 3NNE, US | daily low max | -12.2 C (10.0 F) | 2.2 C (4.0 F) | 79 years | 35 of 100 (Notable) |
| 20 February 2026 | Waukon 3NNE, US | daily snowfall | 25.4 cm (10.0 in) | 19.0 cm (7.5 in) | 88 years | 72 of 100 (Major) |
| 17 February 2026 | Waukon 3NNE, US | daily high min | 3.3 C (37.9 F) | 1.1 C (2.0 F) | 44 years | 23 of 100 (Routine) |
| 17 February 2026 | Waukon 3NNE, US | daily high max | 16.1 C (61.0 F) | 0.5 C (0.9 F) | 44 years | 22 of 100 (Routine) |
| 16 February 2026 | Waukon 3NNE, US | daily high max | 13.9 C (57.0 F) | 0.6 C (1.1 F) | 44 years | 22 of 100 (Routine) |
| 15 February 2026 | Waukon 3NNE, US | daily high max | 11.1 C (52.0 F) | 0.5 C (0.9 F) | 72 years | 30 of 100 (Routine) |
Climate Trend
64 complete years, 1935 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1935 | 8.1 C | +0.58 C |
| 1936 | 7.4 C | -0.10 C |
| 1937 | 6.9 C | -0.58 C |
| 1938 | 8.6 C | +1.08 C |
| 1939 | 9.1 C | +1.59 C |
| 1940 | 7.4 C | -0.13 C |
| 1941 | 8.9 C | +1.39 C |
| 1946 | 8.0 C | +0.45 C |
| 1947 | 6.9 C | -0.59 C |
| 1949 | 7.5 C | +0.02 C |
| 1950 | 6.2 C | -1.30 C |
| 1951 | 5.7 C | -1.79 C |
| 1952 | 8.0 C | +0.46 C |
| 1953 | 8.4 C | +0.84 C |
| 1954 | 8.3 C | +0.81 C |
| 1955 | 7.6 C | +0.06 C |
| 1956 | 7.3 C | -0.21 C |
| 1957 | 7.3 C | -0.24 C |
| 1958 | 7.3 C | -0.20 C |
| 1959 | 6.9 C | -0.65 C |
| 1960 | 7.4 C | -0.16 C |
| 1961 | 7.2 C | -0.30 C |
| 1962 | 6.5 C | -1.05 C |
| 1964 | 8.5 C | +0.95 C |
| 1966 | 7.1 C | -0.38 C |
| 1967 | 6.9 C | -0.58 C |
| 1968 | 8.1 C | +0.58 C |
| 1969 | 7.1 C | -0.43 C |
| 1970 | 7.4 C | -0.12 C |
| 1971 | 7.5 C | -0.05 C |
| 1972 | 6.5 C | -0.99 C |
| 1973 | 8.6 C | +1.12 C |
| 1974 | 7.7 C | +0.21 C |
| 1975 | 7.7 C | +0.14 C |
| 1976 | 7.6 C | +0.11 C |
| 1977 | 8.0 C | +0.45 C |
| 1979 | 6.2 C | -1.34 C |
| 1980 | 7.5 C | +0.01 C |
| 1981 | 7.9 C | +0.40 C |
| 1982 | 6.6 C | -0.94 C |
| 1983 | 7.6 C | +0.04 C |
| 1984 | 7.7 C | +0.16 C |
| 1985 | 6.8 C | -0.77 C |
| 1986 | 7.9 C | +0.33 C |
| 1987 | 9.3 C | +1.77 C |
| 1988 | 7.6 C | +0.11 C |
| 1989 | 7.2 C | -0.37 C |
| 1990 | 8.8 C | +1.27 C |
| 1994 | 7.1 C | -0.41 C |
| 1995 | 7.2 C | -0.34 C |
| 1996 | 5.5 C | -1.99 C |
| 1997 | 6.7 C | -0.85 C |
| 2003 | 6.8 C | -0.77 C |
| 2004 | 7.1 C | -0.39 C |
| 2005 | 8.0 C | +0.45 C |
| 2006 | 8.4 C | +0.90 C |
| 2007 | 7.5 C | +0.01 C |
| 2008 | 6.0 C | -1.48 C |
| 2009 | 6.6 C | -0.90 C |
| 2010 | 7.9 C | +0.41 C |
| 2011 | 7.5 C | -0.01 C |
| 2012 | 9.5 C | +1.95 C |
| 2024 | 9.1 C | +1.61 C |
| 2025 | 7.8 C | +0.28 C |
The fitted trend in annual mean temperature here over 1935 to 2025 is 0.00 C (-0.09 to 0.09) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.00 F (-0.17 to 0.16) 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 | 0.00 C (-0.09 to 0.09) per decade | 0.00 F (-0.17 to 0.16) per decade | 1935 to 2025 | 64 | Not clearly different from zero |
| Mean daily maximum | -0.04 C (-0.14 to 0.06) per decade | -0.1 F (-0.3 to 0.1) per decade | 1935 to 2025 | 64 | Not clearly different from zero |
| Mean daily minimum | 0.04 C (-0.06 to 0.14) per decade | 0.1 F (-0.1 to 0.2) per decade | 1935 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
1934 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 41.1 C (106.0 F) | 1936 | 33.9 C (93.0 F) | 85 |
| Coldest night (TNn) | -36.7 C (-34.1 F) | 1996 | -28.9 C (-20.0 F) | 85 |
| Wettest day (Rx1day) | 151.9 mm (6.0 in) | 1941 | 58.8 mm (2.3 in) | 88 |
| Wettest five days (Rx5day) | 251.2 mm (9.9 in) | 1941 | 96.9 mm (3.8 in) | 88 |
| Longest dry spell (CDD) | 58 days | 1952 | 26 days | 88 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1934 | 29.4 C (84.9 F) |
| 1935 | 36.1 C (97.0 F) |
| 1936 | 41.1 C (106.0 F) |
| 1937 | 37.8 C (100.0 F) |
| 1938 | 32.8 C (91.0 F) |
| 1939 | 37.2 C (99.0 F) |
| 1940 | 36.1 C (97.0 F) |
| 1941 | 35.6 C (96.1 F) |
| 1942 | 33.3 C (91.9 F) |
| 1943 | 35.6 C (96.1 F) |
| 1944 | 33.3 C (91.9 F) |
| 1945 | 34.4 C (93.9 F) |
| 1946 | 33.9 C (93.0 F) |
| 1947 | 37.2 C (99.0 F) |
| 1948 | 36.1 C (97.0 F) |
| 1949 | 35.6 C (96.1 F) |
| 1950 | 31.1 C (88.0 F) |
| 1951 | 31.1 C (88.0 F) |
| 1952 | 32.2 C (90.0 F) |
| 1953 | 33.9 C (93.0 F) |
| 1954 | 32.8 C (91.0 F) |
| 1955 | 36.1 C (97.0 F) |
| 1956 | 33.3 C (91.9 F) |
| 1957 | 33.3 C (91.9 F) |
| 1958 | 33.3 C (91.9 F) |
| 1959 | 32.2 C (90.0 F) |
| 1960 | 32.8 C (91.0 F) |
| 1961 | 32.2 C (90.0 F) |
| 1962 | 30.0 C (86.0 F) |
| 1963 | 36.7 C (98.1 F) |
| 1964 | 35.6 C (96.1 F) |
| 1965 | 35.0 C (95.0 F) |
| 1966 | 33.3 C (91.9 F) |
| 1967 | 32.8 C (91.0 F) |
| 1968 | 32.8 C (91.0 F) |
| 1969 | 32.8 C (91.0 F) |
| 1970 | 33.3 C (91.9 F) |
| 1971 | 32.2 C (90.0 F) |
| 1972 | 32.8 C (91.0 F) |
| 1973 | 33.3 C (91.9 F) |
| 1974 | 33.3 C (91.9 F) |
| 1975 | 31.7 C (89.1 F) |
| 1976 | 35.0 C (95.0 F) |
| 1977 | 33.9 C (93.0 F) |
| 1978 | 33.9 C (93.0 F) |
| 1979 | 30.0 C (86.0 F) |
| 1980 | 35.0 C (95.0 F) |
| 1981 | 33.3 C (91.9 F) |
| 1982 | 32.8 C (91.0 F) |
| 1983 | 33.9 C (93.0 F) |
| 1984 | 34.4 C (93.9 F) |
| 1985 | 33.9 C (93.0 F) |
| 1986 | 32.8 C (91.0 F) |
| 1987 | 33.9 C (93.0 F) |
| 1988 | 37.2 C (99.0 F) |
| 1989 | 35.0 C (95.0 F) |
| 1990 | 35.0 C (95.0 F) |
| 1991 | 32.8 C (91.0 F) |
| 1992 | 31.1 C (88.0 F) |
| 1993 | 30.0 C (86.0 F) |
| 1994 | 33.3 C (91.9 F) |
| 1995 | 38.9 C (102.0 F) |
| 1996 | 34.4 C (93.9 F) |
| 1997 | 32.8 C (91.0 F) |
| 1998 | 25.6 C (78.1 F) |
| 1999 | 35.0 C (95.0 F) |
| 2000 | 32.8 C (91.0 F) |
| 2001 | 35.6 C (96.1 F) |
| 2002 | 34.4 C (93.9 F) |
| 2003 | 35.6 C (96.1 F) |
| 2004 | 31.7 C (89.1 F) |
| 2005 | 34.4 C (93.9 F) |
| 2006 | 36.1 C (97.0 F) |
| 2007 | 32.8 C (91.0 F) |
| 2008 | 30.6 C (87.1 F) |
| 2009 | 33.9 C (93.0 F) |
| 2010 | 32.8 C (91.0 F) |
| 2011 | 35.0 C (95.0 F) |
| 2012 | 36.7 C (98.1 F) |
| 2013 | 10.0 C (50.0 F) |
| 2019 | n/a |
| 2020 | n/a |
| 2021 | n/a |
| 2022 | 35.0 C (95.0 F) |
| 2023 | 37.8 C (100.0 F) |
| 2024 | 33.9 C (93.0 F) |
| 2025 | 32.8 C (91.0 F) |
| 2026 | 34.4 C (93.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1934 | -26.7 C (-16.1 F) |
| 1935 | -33.3 C (-27.9 F) |
| 1936 | -35.0 C (-31.0 F) |
| 1937 | -28.3 C (-18.9 F) |
| 1938 | -25.6 C (-14.1 F) |
| 1939 | -26.1 C (-15.0 F) |
| 1940 | -30.0 C (-22.0 F) |
| 1941 | -27.8 C (-18.0 F) |
| 1942 | -33.9 C (-29.0 F) |
| 1943 | -31.1 C (-24.0 F) |
| 1944 | -25.6 C (-14.1 F) |
| 1945 | -27.8 C (-18.0 F) |
| 1946 | -30.0 C (-22.0 F) |
| 1947 | -29.4 C (-20.9 F) |
| 1948 | -27.8 C (-18.0 F) |
| 1949 | -30.6 C (-23.1 F) |
| 1950 | -31.1 C (-24.0 F) |
| 1951 | -35.0 C (-31.0 F) |
| 1952 | -29.4 C (-20.9 F) |
| 1953 | -25.0 C (-13.0 F) |
| 1954 | -30.0 C (-22.0 F) |
| 1955 | -30.0 C (-22.0 F) |
| 1956 | -30.0 C (-22.0 F) |
| 1957 | -27.8 C (-18.0 F) |
| 1958 | -28.9 C (-20.0 F) |
| 1959 | -30.6 C (-23.1 F) |
| 1960 | -28.9 C (-20.0 F) |
| 1961 | -30.0 C (-22.0 F) |
| 1962 | -30.6 C (-23.1 F) |
| 1963 | -34.4 C (-29.9 F) |
| 1964 | -25.0 C (-13.0 F) |
| 1965 | -30.6 C (-23.1 F) |
| 1966 | -33.3 C (-27.9 F) |
| 1967 | -34.4 C (-29.9 F) |
| 1968 | -30.6 C (-23.1 F) |
| 1969 | -27.8 C (-18.0 F) |
| 1970 | -32.8 C (-27.0 F) |
| 1971 | -28.9 C (-20.0 F) |
| 1972 | -33.3 C (-27.9 F) |
| 1973 | -28.9 C (-20.0 F) |
| 1974 | -30.6 C (-23.1 F) |
| 1975 | -29.4 C (-20.9 F) |
| 1976 | -29.4 C (-20.9 F) |
| 1977 | -31.7 C (-25.1 F) |
| 1978 | -27.8 C (-18.0 F) |
| 1979 | -31.7 C (-25.1 F) |
| 1980 | -24.4 C (-11.9 F) |
| 1981 | -27.8 C (-18.0 F) |
| 1982 | -34.4 C (-29.9 F) |
| 1983 | -32.8 C (-27.0 F) |
| 1984 | -30.6 C (-23.1 F) |
| 1985 | -33.9 C (-29.0 F) |
| 1986 | -27.2 C (-17.0 F) |
| 1987 | -26.7 C (-16.1 F) |
| 1988 | -32.8 C (-27.0 F) |
| 1989 | -30.6 C (-23.1 F) |
| 1990 | -30.0 C (-22.0 F) |
| 1991 | -26.1 C (-15.0 F) |
| 1992 | -23.9 C (-11.0 F) |
| 1993 | -25.0 C (-13.0 F) |
| 1994 | -33.9 C (-29.0 F) |
| 1995 | -22.8 C (-9.0 F) |
| 1996 | -36.7 C (-34.1 F) |
| 1997 | -27.8 C (-18.0 F) |
| 1998 | -23.3 C (-9.9 F) |
| 1999 | -28.9 C (-20.0 F) |
| 2000 | -26.1 C (-15.0 F) |
| 2001 | -25.0 C (-13.0 F) |
| 2002 | -22.8 C (-9.0 F) |
| 2003 | -24.4 C (-11.9 F) |
| 2004 | -28.3 C (-18.9 F) |
| 2005 | -26.1 C (-15.0 F) |
| 2006 | -28.9 C (-20.0 F) |
| 2007 | -29.4 C (-20.9 F) |
| 2008 | -27.2 C (-17.0 F) |
| 2009 | -31.1 C (-24.0 F) |
| 2010 | -26.1 C (-15.0 F) |
| 2011 | -27.8 C (-18.0 F) |
| 2012 | -22.8 C (-9.0 F) |
| 2013 | -25.0 C (-13.0 F) |
| 2019 | n/a |
| 2020 | n/a |
| 2021 | n/a |
| 2022 | -26.7 C (-16.1 F) |
| 2023 | -25.6 C (-14.1 F) |
| 2024 | -27.2 C (-17.0 F) |
| 2025 | -28.9 C (-20.0 F) |
| 2026 | -31.1 C (-24.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1934 | 41.1 mm (1.6 in) |
| 1935 | 63.2 mm (2.5 in) |
| 1936 | 51.6 mm (2.0 in) |
| 1937 | 55.9 mm (2.2 in) |
| 1938 | 53.6 mm (2.1 in) |
| 1939 | 36.3 mm (1.4 in) |
| 1940 | 70.1 mm (2.8 in) |
| 1941 | 151.9 mm (6.0 in) |
| 1942 | 50.8 mm (2.0 in) |
| 1943 | 72.4 mm (2.9 in) |
| 1944 | 33.8 mm (1.3 in) |
| 1945 | 54.6 mm (2.1 in) |
| 1946 | 59.4 mm (2.3 in) |
| 1947 | 65.0 mm (2.6 in) |
| 1948 | 58.9 mm (2.3 in) |
| 1949 | 48.8 mm (1.9 in) |
| 1950 | 113.3 mm (4.5 in) |
| 1951 | 119.9 mm (4.7 in) |
| 1952 | 49.3 mm (1.9 in) |
| 1953 | 35.1 mm (1.4 in) |
| 1954 | 61.0 mm (2.4 in) |
| 1955 | 40.9 mm (1.6 in) |
| 1956 | 52.8 mm (2.1 in) |
| 1957 | 41.7 mm (1.6 in) |
| 1958 | 48.5 mm (1.9 in) |
| 1959 | 72.9 mm (2.9 in) |
| 1960 | 45.2 mm (1.8 in) |
| 1961 | 46.2 mm (1.8 in) |
| 1962 | 78.2 mm (3.1 in) |
| 1963 | 39.9 mm (1.6 in) |
| 1964 | 64.5 mm (2.5 in) |
| 1965 | 59.9 mm (2.4 in) |
| 1966 | 71.6 mm (2.8 in) |
| 1967 | 28.7 mm (1.1 in) |
| 1968 | 72.4 mm (2.9 in) |
| 1969 | 45.2 mm (1.8 in) |
| 1970 | 102.9 mm (4.1 in) |
| 1971 | 42.4 mm (1.7 in) |
| 1972 | 43.2 mm (1.7 in) |
| 1973 | 50.3 mm (2.0 in) |
| 1974 | 90.9 mm (3.6 in) |
| 1975 | 44.7 mm (1.8 in) |
| 1976 | 34.0 mm (1.3 in) |
| 1977 | 62.5 mm (2.5 in) |
| 1978 | 76.7 mm (3.0 in) |
| 1979 | 48.3 mm (1.9 in) |
| 1980 | 54.9 mm (2.2 in) |
| 1981 | 105.9 mm (4.2 in) |
| 1982 | 51.8 mm (2.0 in) |
| 1983 | 96.0 mm (3.8 in) |
| 1984 | 51.3 mm (2.0 in) |
| 1985 | 95.5 mm (3.8 in) |
| 1986 | 85.1 mm (3.4 in) |
| 1987 | 62.2 mm (2.4 in) |
| 1988 | 57.4 mm (2.3 in) |
| 1989 | 52.1 mm (2.1 in) |
| 1990 | 94.0 mm (3.7 in) |
| 1991 | 87.6 mm (3.4 in) |
| 1992 | 43.2 mm (1.7 in) |
| 1993 | 76.2 mm (3.0 in) |
| 1994 | 45.7 mm (1.8 in) |
| 1995 | 53.3 mm (2.1 in) |
| 1996 | 57.2 mm (2.3 in) |
| 1997 | 101.6 mm (4.0 in) |
| 1998 | 50.8 mm (2.0 in) |
| 1999 | 92.5 mm (3.6 in) |
| 2000 | 104.1 mm (4.1 in) |
| 2001 | 69.9 mm (2.8 in) |
| 2002 | 78.7 mm (3.1 in) |
| 2003 | 53.3 mm (2.1 in) |
| 2004 | 57.2 mm (2.3 in) |
| 2005 | 58.7 mm (2.3 in) |
| 2006 | 61.7 mm (2.4 in) |
| 2007 | 76.2 mm (3.0 in) |
| 2008 | 110.7 mm (4.4 in) |
| 2009 | 79.8 mm (3.1 in) |
| 2010 | 70.9 mm (2.8 in) |
| 2011 | 50.3 mm (2.0 in) |
| 2012 | 55.4 mm (2.2 in) |
| 2013 | 10.7 mm (0.4 in) |
| 2019 | 36.8 mm (1.4 in) |
| 2020 | 63.8 mm (2.5 in) |
| 2021 | 0.5 mm (0.02 in) |
| 2022 | 87.4 mm (3.4 in) |
| 2023 | 74.4 mm (2.9 in) |
| 2024 | 65.8 mm (2.6 in) |
| 2025 | 67.3 mm (2.6 in) |
| 2026 | 104.1 mm (4.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1934 | 84.1 mm (3.3 in) |
| 1935 | 99.6 mm (3.9 in) |
| 1936 | 101.7 mm (4.0 in) |
| 1937 | 81.9 mm (3.2 in) |
| 1938 | 102.6 mm (4.0 in) |
| 1939 | 58.7 mm (2.3 in) |
| 1940 | 114.1 mm (4.5 in) |
| 1941 | 251.2 mm (9.9 in) |
| 1942 | 103.4 mm (4.1 in) |
| 1943 | 108.7 mm (4.3 in) |
| 1944 | 39.9 mm (1.6 in) |
| 1945 | 59.9 mm (2.4 in) |
| 1946 | 117.3 mm (4.6 in) |
| 1947 | 114.6 mm (4.5 in) |
| 1948 | 68.9 mm (2.7 in) |
| 1949 | 94.8 mm (3.7 in) |
| 1950 | 151.1 mm (5.9 in) |
| 1951 | 151.7 mm (6.0 in) |
| 1952 | 51.3 mm (2.0 in) |
| 1953 | 58.7 mm (2.3 in) |
| 1954 | 69.1 mm (2.7 in) |
| 1955 | 77.0 mm (3.0 in) |
| 1956 | 55.4 mm (2.2 in) |
| 1957 | 79.1 mm (3.1 in) |
| 1958 | 55.1 mm (2.2 in) |
| 1959 | 119.6 mm (4.7 in) |
| 1960 | 60.9 mm (2.4 in) |
| 1961 | 57.7 mm (2.3 in) |
| 1962 | 89.9 mm (3.5 in) |
| 1963 | 46.7 mm (1.8 in) |
| 1964 | 91.9 mm (3.6 in) |
| 1965 | 118.5 mm (4.7 in) |
| 1966 | 73.9 mm (2.9 in) |
| 1967 | 69.9 mm (2.8 in) |
| 1968 | 98.3 mm (3.9 in) |
| 1969 | 86.9 mm (3.4 in) |
| 1970 | 113.8 mm (4.5 in) |
| 1971 | 57.6 mm (2.3 in) |
| 1972 | 80.8 mm (3.2 in) |
| 1973 | 99.3 mm (3.9 in) |
| 1974 | 100.3 mm (3.9 in) |
| 1975 | 106.2 mm (4.2 in) |
| 1976 | 67.8 mm (2.7 in) |
| 1977 | 116.1 mm (4.6 in) |
| 1978 | 134.1 mm (5.3 in) |
| 1979 | 70.0 mm (2.8 in) |
| 1980 | 110.9 mm (4.4 in) |
| 1981 | 134.9 mm (5.3 in) |
| 1982 | 83.0 mm (3.3 in) |
| 1983 | 237.2 mm (9.3 in) |
| 1984 | 76.0 mm (3.0 in) |
| 1985 | 123.4 mm (4.9 in) |
| 1986 | 102.6 mm (4.0 in) |
| 1987 | 99.0 mm (3.9 in) |
| 1988 | 161.8 mm (6.4 in) |
| 1989 | 79.5 mm (3.1 in) |
| 1990 | 145.2 mm (5.7 in) |
| 1991 | 139.4 mm (5.5 in) |
| 1992 | 104.2 mm (4.1 in) |
| 1993 | 132.1 mm (5.2 in) |
| 1994 | 49.2 mm (1.9 in) |
| 1995 | 71.6 mm (2.8 in) |
| 1996 | 86.4 mm (3.4 in) |
| 1997 | 85.1 mm (3.4 in) |
| 1998 | 62.5 mm (2.5 in) |
| 1999 | 157.8 mm (6.2 in) |
| 2000 | 147.0 mm (5.8 in) |
| 2001 | 97.1 mm (3.8 in) |
| 2002 | 98.3 mm (3.9 in) |
| 2003 | 67.5 mm (2.7 in) |
| 2004 | 144.1 mm (5.7 in) |
| 2005 | 108.0 mm (4.3 in) |
| 2006 | 82.8 mm (3.3 in) |
| 2007 | 136.1 mm (5.4 in) |
| 2008 | 160.3 mm (6.3 in) |
| 2009 | 105.2 mm (4.1 in) |
| 2010 | 133.3 mm (5.2 in) |
| 2011 | 68.9 mm (2.7 in) |
| 2012 | 68.4 mm (2.7 in) |
| 2013 | 18.0 mm (0.7 in) |
| 2019 | 36.8 mm (1.4 in) |
| 2020 | 96.6 mm (3.8 in) |
| 2021 | 14.0 mm (0.6 in) |
| 2022 | 94.0 mm (3.7 in) |
| 2023 | 157.0 mm (6.2 in) |
| 2024 | 114.3 mm (4.5 in) |
| 2025 | 68.8 mm (2.7 in) |
| 2026 | 129.5 mm (5.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1934 | 19 days |
| 1935 | 25 days |
| 1936 | 19 days |
| 1937 | 23 days |
| 1938 | 22 days |
| 1939 | 32 days |
| 1940 | 19 days |
| 1941 | 18 days |
| 1942 | 30 days |
| 1943 | 22 days |
| 1944 | 27 days |
| 1945 | 31 days |
| 1946 | 32 days |
| 1947 | 24 days |
| 1948 | 27 days |
| 1949 | 27 days |
| 1950 | 30 days |
| 1951 | 21 days |
| 1952 | 58 days |
| 1953 | 30 days |
| 1954 | 27 days |
| 1955 | 35 days |
| 1956 | 33 days |
| 1957 | 29 days |
| 1958 | 37 days |
| 1959 | 26 days |
| 1960 | 33 days |
| 1961 | 23 days |
| 1962 | 48 days |
| 1963 | 37 days |
| 1964 | 35 days |
| 1965 | 21 days |
| 1966 | 25 days |
| 1967 | 29 days |
| 1968 | 36 days |
| 1969 | 49 days |
| 1970 | 25 days |
| 1971 | 25 days |
| 1972 | 30 days |
| 1973 | 19 days |
| 1974 | 17 days |
| 1975 | 24 days |
| 1976 | 32 days |
| 1977 | 18 days |
| 1978 | 20 days |
| 1979 | 24 days |
| 1980 | 31 days |
| 1981 | 17 days |
| 1982 | 37 days |
| 1983 | 15 days |
| 1984 | 33 days |
| 1985 | 18 days |
| 1986 | 23 days |
| 1987 | 29 days |
| 1988 | 36 days |
| 1989 | 33 days |
| 1990 | 13 days |
| 1991 | 21 days |
| 1992 | 23 days |
| 1993 | 21 days |
| 1994 | 26 days |
| 1995 | 19 days |
| 1996 | 15 days |
| 1997 | 12 days |
| 1998 | 31 days |
| 1999 | 26 days |
| 2000 | 23 days |
| 2001 | 25 days |
| 2002 | 17 days |
| 2003 | 43 days |
| 2004 | 16 days |
| 2005 | 16 days |
| 2006 | 26 days |
| 2007 | 33 days |
| 2008 | 14 days |
| 2009 | 26 days |
| 2010 | 29 days |
| 2011 | 18 days |
| 2012 | 26 days |
| 2013 | 12 days |
| 2019 | 16 days |
| 2020 | 20 days |
| 2021 | 14 days |
| 2022 | 12 days |
| 2023 | 34 days |
| 2024 | 30 days |
| 2025 | 43 days |
| 2026 | 28 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 Waukon 3NNE falls on 2 May and the median first autumn frost on 6 October, which leaves a median of 158 days between them.
In 1976 to 2025 the median growing season was 160 days. That is 2 days more than in 1935 to 1971.
Fitted over all years, the growing season changes by +2.1 days per decade at this station.
| Measure | Median, all years | Earliest period (1935 to 1971) | Recent period (1976 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 2 May | 4 May | 1 May | 3 days earlier | -1.0 days per decade |
| First autumn frost | 6 October | 4 October | 7 October | 3 days later | +1.1 days per decade |
| Growing days | 158 days | 158 days | 160 days | 2 days more | +2.1 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
66 years, 1935 to 2025A day with at least 59.8 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 149.7 mm (5.9 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 59.8 mm (2.4 in) | |
| 5 years | 79.7 mm (3.1 in) | |
| 10 years | 94.4 mm (3.7 in) | |
| 25 years | 114.9 mm (4.5 in) | |
| 50 years | 131.7 mm (5.2 in) | |
| 100 years | 149.7 mm (5.9 in) | Longer than the 66 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, 66 years of values from 1935 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: 151.9 mm (6.0 in) in 1941; 119.9 mm (4.7 in) in 1951; 113.3 mm (4.5 in) in 1950.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
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).