Mapleton No.2 Weather Records (USC00135123)
Record envelope, standing records and threshold days for Mapleton No.2 (USC00135123), Iowa, United States, with 90 years of record.
Key Facts for Mapleton No.2
- Mapleton No.2 (USC00135123) is a weather station in Iowa, United States at 42.19 latitude and -95.76 longitude, 360 m (1,180 ft) above sea level.
- The station reports from 1937 to 2026, 90 years of record.
- 1,464 records set at Mapleton No.2 still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Mapleton No.2 set a daily record high maximum temperature of 31.7 C (89.1 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: Iowa, United States, 42.19 latitude, -95.76 longitude.
- Elevation: 360 m (1,180 ft).
- Period of record: 1937 to 2026, 90 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
12 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 20.0 C (68.0 F) | -35.6 C (-32.1 F) | 15.0 C (59.0 F) | -25.6 C (-14.1 F) |
| Feb | 24.4 C (75.9 F) | -37.2 C (-35.0 F) | 19.4 C (66.9 F) | -23.9 C (-11.0 F) |
| Mar | 33.9 C (93.0 F) | -31.7 C (-25.1 F) | 33.9 C (93.0 F) | -17.2 C (1.0 F) |
| Apr | 35.6 C (96.1 F) | -18.3 C (-0.9 F) | 31.7 C (89.1 F) | -1.7 C (28.9 F) |
| May | 38.3 C (100.9 F) | -5.0 C (23.0 F) | 34.4 C (93.9 F) | -2.8 C (27.0 F) |
| Jun | 40.0 C (104.0 F) | 2.2 C (36.0 F) | 35.0 C (95.0 F) | 7.8 C (46.0 F) |
| Jul | 41.1 C (106.0 F) | 5.6 C (42.1 F) | 36.7 C (98.1 F) | 12.2 C (54.0 F) |
| Aug | 40.0 C (104.0 F) | 2.2 C (36.0 F) | 34.4 C (93.9 F) | 10.6 C (51.1 F) |
| Sep | 40.0 C (104.0 F) | -5.6 C (21.9 F) | 34.4 C (93.9 F) | 10.0 C (50.0 F) |
| Oct | 34.4 C (93.9 F) | -12.2 C (10.0 F) | 31.7 C (89.1 F) | 4.4 C (39.9 F) |
| Nov | 27.2 C (81.0 F) | -26.7 C (-16.1 F) | n/a | n/a |
| Dec | 20.6 C (69.1 F) | -33.3 C (-27.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1937 | 4 |
| 1938 | 25 |
| 1939 | 44 |
| 1940 | 17 |
| 1941 | 26 |
| 1942 | 31 |
| 1943 | 20 |
| 1944 | 22 |
| 1945 | 22 |
| 1946 | 23 |
| 1947 | 29 |
| 1948 | 17 |
| 1949 | 8 |
| 1950 | 17 |
| 1951 | 22 |
| 1952 | 11 |
| 1953 | 15 |
| 1954 | 12 |
| 1955 | 29 |
| 1956 | 16 |
| 1957 | 12 |
| 1958 | 14 |
| 1959 | 21 |
| 1960 | 12 |
| 1961 | 9 |
| 1962 | 22 |
| 1963 | 18 |
| 1964 | 14 |
| 1965 | 14 |
| 1966 | 21 |
| 1967 | 19 |
| 1968 | 15 |
| 1969 | 14 |
| 1970 | 17 |
| 1971 | 12 |
| 1972 | 20 |
| 1973 | 11 |
| 1974 | 12 |
| 1975 | 17 |
| 1976 | 14 |
| 1977 | 16 |
| 1978 | 8 |
| 1979 | 17 |
| 1980 | 11 |
| 1981 | 23 |
| 1982 | 9 |
| 1983 | 23 |
| 1984 | 13 |
| 1985 | 21 |
| 1986 | 11 |
| 1987 | 15 |
| 1988 | 27 |
| 1989 | 26 |
| 1990 | 19 |
| 1991 | 17 |
| 1992 | 16 |
| 1993 | 10 |
| 1994 | 8 |
| 1995 | 12 |
| 1996 | 14 |
| 1997 | 18 |
| 1998 | 15 |
| 1999 | 14 |
| 2000 | 14 |
| 2001 | 4 |
| 2002 | 14 |
| 2003 | 12 |
| 2004 | 17 |
| 2005 | 11 |
| 2006 | 16 |
| 2007 | 8 |
| 2008 | 13 |
| 2009 | 8 |
| 2010 | 12 |
| 2011 | 9 |
| 2012 | 30 |
| 2013 | 17 |
| 2014 | 25 |
| 2015 | 10 |
| 2016 | 8 |
| 2017 | 16 |
| 2018 | 18 |
| 2019 | 13 |
| 2020 | 21 |
| 2021 | 19 |
| 2022 | 13 |
| 2023 | 13 |
| 2024 | 10 |
| 2025 | 19 |
| 2026 | 13 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1970-01-19 | Record low minimum temperature | Record low minimum temperature -34.4 C (-29.9 F) |
| 1970-01-21 | Record low minimum temperature | Record low minimum temperature -35.6 C (-32.1 F) |
| 1983-12-23 | Record low maximum temperature | Record low maximum temperature -23.9 C (-11.0 F) |
| 1983-12-24 | Record low maximum temperature | Record low maximum temperature -26.1 C (-15.0 F) |
| 1996-07-17 | Record daily precipitation | Record daily precipitation 248.2 mm (9.8 in) |
| 2021-02-16 | Record low minimum temperature | Record low minimum temperature -37.2 C (-35.0 F) |
Wettest Day of Each Month
Jul: 248.2 mm (9.8 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 41.4 mm (1.6 in) | 30 January 1947 |
| Feb | 43.9 mm (1.7 in) | 28 February 1951 |
| Mar | 51.1 mm (2.0 in) | 23 March 1987 |
| Apr | 74.9 mm (2.9 in) | 27 April 1986 |
| May | 85.9 mm (3.4 in) | 27 May 2014 |
| Jun | 115.3 mm (4.5 in) | 4 June 1940 |
| Jul | 248.2 mm (9.8 in) | 17 July 1996 |
| Aug | 105.4 mm (4.1 in) | 1 August 1944 |
| Sep | 84.8 mm (3.3 in) | 12 September 1982 |
| Oct | 71.1 mm (2.8 in) | 30 October 1979 |
| Nov | 53.6 mm (2.1 in) | 12 November 2015 |
| Dec | 52.6 mm (2.1 in) | 14 December 2015 |
Period of Record Coverage
1937 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1937 | 58 | 16% | No |
| 1938 | 363 | 99% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 364 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 364 | 99% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 353 | 97% | Yes |
| 1948 | 341 | 93% | Yes |
| 1949 | 364 | 100% | Yes |
| 1950 | 353 | 97% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 364 | 99% | Yes |
| 1953 | 360 | 99% | Yes |
| 1954 | 354 | 97% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 361 | 99% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 364 | 100% | Yes |
| 1959 | 364 | 100% | Yes |
| 1960 | 360 | 98% | Yes |
| 1961 | 364 | 100% | Yes |
| 1962 | 361 | 99% | Yes |
| 1963 | 364 | 100% | Yes |
| 1964 | 362 | 99% | Yes |
| 1965 | 363 | 99% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 355 | 97% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 334 | 92% | Yes |
| 1976 | 365 | 100% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 363 | 99% | Yes |
| 1980 | 365 | 100% | Yes |
| 1981 | 364 | 100% | Yes |
| 1982 | 329 | 90% | Yes |
| 1983 | 363 | 99% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 361 | 99% | Yes |
| 1986 | 364 | 100% | Yes |
| 1987 | 363 | 99% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 364 | 100% | Yes |
| 1990 | 364 | 100% | Yes |
| 1991 | 353 | 97% | Yes |
| 1992 | 355 | 97% | Yes |
| 1993 | 354 | 97% | Yes |
| 1994 | 340 | 93% | Yes |
| 1995 | 277 | 76% | No |
| 1996 | 279 | 76% | No |
| 1997 | 361 | 99% | Yes |
| 1998 | 362 | 99% | Yes |
| 1999 | 362 | 99% | Yes |
| 2000 | 267 | 73% | No |
| 2001 | 91 | 25% | No |
| 2002 | 363 | 99% | Yes |
| 2003 | 363 | 99% | Yes |
| 2004 | 363 | 99% | Yes |
| 2005 | 357 | 98% | Yes |
| 2006 | 361 | 99% | Yes |
| 2007 | 364 | 100% | Yes |
| 2008 | 353 | 96% | Yes |
| 2009 | 339 | 93% | Yes |
| 2010 | 342 | 94% | Yes |
| 2011 | 314 | 86% | No |
| 2012 | 366 | 100% | Yes |
| 2013 | 364 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 363 | 99% | Yes |
| 2017 | 364 | 100% | Yes |
| 2018 | 362 | 99% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 321 | 88% | No |
| 2024 | 352 | 96% | Yes |
| 2025 | 348 | 95% | Yes |
| 2026 | 280 | 77% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 11 October 2026 | Mapleton No.2, US | daily high max (Provisional) | 31.7 C (89.1 F) | 1.1 C (2.0 F) | 69 years | 30 of 100 (Routine) |
| 1 October 2026 | Mapleton No.2, US | daily rain (Provisional) | 33.5 mm (1.3 in) | 13.9 mm (0.5 in) | 44 years | 34 of 100 (Routine) |
| 27 September 2026 | Mapleton No.2, US | daily high min (Provisional) | 17.8 C (64.0 F) | 0.6 C (1.1 F) | 28 years | 18 of 100 (Routine) |
| 15 August 2026 | Mapleton No.2, US | daily high min (Tie, Provisional) | 22.2 C (72.0 F) | tie | 53 years | 6 of 100 (Routine) |
| 14 August 2026 | Mapleton No.2, US | daily rain | 53.3 mm (2.1 in) | 19.3 mm (0.8 in) | 75 years | 44 of 100 (Notable) |
| 13 August 2026 | Mapleton No.2, US | daily rain | 69.6 mm (2.7 in) | 31.5 mm (1.2 in) | 75 years | 53 of 100 (Notable) |
| 27 July 2026 | Mapleton No.2, US | daily high min | 23.3 C (73.9 F) | 0.5 C (0.9 F) | 39 years | 21 of 100 (Routine) |
| 25 July 2026 | Mapleton No.2, US | daily low max | 22.2 C (72.0 F) | 0.6 C (1.1 F) | 21 years | 16 of 100 (Routine) |
| 30 May 2026 | Mapleton No.2, US | daily high min | 20.0 C (68.0 F) | 0.6 C (1.1 F) | 37 years | 21 of 100 (Routine) |
| 16 May 2026 | Mapleton No.2, US | daily high max | 34.4 C (93.9 F) | 1.1 C (2.0 F) | 87 years | 36 of 100 (Notable) |
| 23 April 2026 | Mapleton No.2, US | daily high max (Tie) | 29.4 C (84.9 F) | tie | 87 years | 8 of 100 (Routine) |
| 3 April 2026 | Mapleton No.2, US | daily rain | 22.6 mm (0.9 in) | 2.5 mm (0.10 in) | 41 years | 20 of 100 (Routine) |
| 31 March 2026 | Mapleton No.2, US | daily high max | 31.1 C (88.0 F) | 1.1 C (2.0 F) | 48 years | 24 of 100 (Routine) |
| 22 March 2026 | Mapleton No.2, US | monthly high max | 33.9 C (93.0 F) | 2.8 C (5.0 F) | 39 years | 33 of 100 (Routine) |
| 21 March 2026 | Mapleton No.2, US | daily high max | 27.2 C (81.0 F) | 1.1 C (2.0 F) | 87 years | 36 of 100 (Notable) |
| 20 March 2026 | Mapleton No.2, US | daily high max | 25.0 C (77.0 F) | 1.1 C (2.0 F) | 8 years | 12 of 100 (Routine) |
| 17 March 2026 | Mapleton No.2, US | daily low max | -7.8 C (18.0 F) | 2.2 C (4.0 F) | 32 years | 20 of 100 (Routine) |
| 17 March 2026 | Mapleton No.2, US | daily low min (Tie) | -16.7 C (1.9 F) | tie | 64 years | 7 of 100 (Routine) |
| 16 March 2026 | Mapleton No.2, US | daily low min | -17.2 C (1.0 F) | 2.2 C (4.0 F) | 83 years | 36 of 100 (Notable) |
| 6 March 2026 | Mapleton No.2, US | daily rain | 50.8 mm (2.0 in) | 10.2 mm (0.4 in) | 43 years | 33 of 100 (Routine) |
Climate Trend
77 complete years, 1938 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1938 | 10.6 C | +1.49 C |
| 1939 | 10.8 C | +1.60 C |
| 1940 | 8.7 C | -0.42 C |
| 1941 | 10.3 C | +1.14 C |
| 1942 | 9.1 C | -0.04 C |
| 1943 | 8.7 C | -0.41 C |
| 1944 | 9.0 C | -0.14 C |
| 1945 | 8.6 C | -0.52 C |
| 1946 | 10.0 C | +0.84 C |
| 1948 | 9.4 C | +0.24 C |
| 1949 | 9.1 C | -0.01 C |
| 1950 | 7.3 C | -1.83 C |
| 1951 | 7.3 C | -1.87 C |
| 1952 | 8.9 C | -0.30 C |
| 1954 | 9.5 C | +0.36 C |
| 1955 | 9.0 C | -0.17 C |
| 1956 | 9.5 C | +0.39 C |
| 1957 | 9.1 C | -0.10 C |
| 1958 | 8.8 C | -0.38 C |
| 1959 | 8.7 C | -0.49 C |
| 1960 | 7.9 C | -1.25 C |
| 1961 | 8.3 C | -0.86 C |
| 1962 | 8.6 C | -0.57 C |
| 1963 | 9.8 C | +0.60 C |
| 1964 | 9.7 C | +0.54 C |
| 1965 | 8.7 C | -0.42 C |
| 1966 | 8.8 C | -0.40 C |
| 1967 | 9.0 C | -0.16 C |
| 1968 | 9.2 C | +0.08 C |
| 1969 | 8.3 C | -0.90 C |
| 1970 | 9.1 C | -0.06 C |
| 1971 | 9.2 C | +0.04 C |
| 1972 | 8.1 C | -1.09 C |
| 1973 | 9.8 C | +0.67 C |
| 1974 | 9.6 C | +0.42 C |
| 1976 | 9.6 C | +0.47 C |
| 1977 | 10.0 C | +0.81 C |
| 1978 | 7.8 C | -1.40 C |
| 1979 | 7.9 C | -1.28 C |
| 1980 | 9.8 C | +0.65 C |
| 1981 | 10.4 C | +1.22 C |
| 1983 | 8.9 C | -0.27 C |
| 1984 | 9.4 C | +0.29 C |
| 1985 | 8.6 C | -0.51 C |
| 1986 | 9.9 C | +0.78 C |
| 1987 | 11.1 C | +1.97 C |
| 1988 | 10.3 C | +1.17 C |
| 1989 | 9.3 C | +0.14 C |
| 1990 | 10.3 C | +1.19 C |
| 1992 | 9.8 C | +0.62 C |
| 1993 | 8.0 C | -1.19 C |
| 1994 | 9.4 C | +0.25 C |
| 1995 | 9.3 C | +0.16 C |
| 1997 | 9.3 C | +0.12 C |
| 1998 | 11.0 C | +1.85 C |
| 1999 | 10.7 C | +1.59 C |
| 2002 | 9.0 C | -0.12 C |
| 2003 | 8.4 C | -0.71 C |
| 2004 | 8.9 C | -0.22 C |
| 2005 | 9.7 C | +0.57 C |
| 2006 | 10.2 C | +1.03 C |
| 2007 | 9.3 C | +0.15 C |
| 2008 | 7.5 C | -1.68 C |
| 2009 | 7.9 C | -1.24 C |
| 2012 | 10.5 C | +1.38 C |
| 2013 | 7.5 C | -1.61 C |
| 2014 | 7.4 C | -1.79 C |
| 2015 | 9.1 C | -0.05 C |
| 2016 | 9.8 C | +0.63 C |
| 2017 | 9.3 C | +0.17 C |
| 2018 | 8.0 C | -1.15 C |
| 2019 | 7.8 C | -1.37 C |
| 2020 | 9.3 C | +0.16 C |
| 2021 | 9.8 C | +0.60 C |
| 2022 | 8.6 C | -0.58 C |
| 2024 | 9.8 C | +0.62 C |
| 2025 | 9.7 C | +0.51 C |
The fitted trend in annual mean temperature here over 1938 to 2025 is 0.00 C (-0.08 to 0.08) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.00 F (-0.15 to 0.14) per decade. The slope is a straight line fitted to 77 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 (-0.08 to 0.08) per decade | 0.00 F (-0.15 to 0.14) per decade | 1938 to 2025 | 77 | Not clearly different from zero |
| Mean daily maximum | 0.04 C (-0.06 to 0.14) per decade | 0.1 F (-0.1 to 0.2) per decade | 1938 to 2025 | 77 | Not clearly different from zero |
| Mean daily minimum | -0.04 C (-0.12 to 0.04) per decade | -0.1 F (-0.2 to 0.1) per decade | 1938 to 2025 | 77 | 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
1937 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 41.1 C (106.0 F) | 1947 | 36.1 C (97.0 F) | 90 |
| Coldest night (TNn) | -37.2 C (-35.0 F) | 2021 | -28.9 C (-20.0 F) | 90 |
| Wettest day (Rx1day) | 248.2 mm (9.8 in) | 1996 | 58.6 mm (2.3 in) | 90 |
| Wettest five days (Rx5day) | 259.2 mm (10.2 in) | 1996 | 94.5 mm (3.7 in) | 90 |
| Longest dry spell (CDD) | 63 days | 1958 | 28 days | 90 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1937 | 21.7 C (71.1 F) |
| 1938 | 40.0 C (104.0 F) |
| 1939 | 40.0 C (104.0 F) |
| 1940 | 40.0 C (104.0 F) |
| 1941 | 38.9 C (102.0 F) |
| 1942 | 37.2 C (99.0 F) |
| 1943 | 36.1 C (97.0 F) |
| 1944 | 36.7 C (98.1 F) |
| 1945 | 36.7 C (98.1 F) |
| 1946 | 39.4 C (102.9 F) |
| 1947 | 41.1 C (106.0 F) |
| 1948 | 37.8 C (100.0 F) |
| 1949 | 35.0 C (95.0 F) |
| 1950 | 33.3 C (91.9 F) |
| 1951 | 33.3 C (91.9 F) |
| 1952 | 35.6 C (96.1 F) |
| 1953 | 37.2 C (99.0 F) |
| 1954 | 37.2 C (99.0 F) |
| 1955 | 40.6 C (105.1 F) |
| 1956 | 37.8 C (100.0 F) |
| 1957 | 36.7 C (98.1 F) |
| 1958 | 35.0 C (95.0 F) |
| 1959 | 34.4 C (93.9 F) |
| 1960 | 35.0 C (95.0 F) |
| 1961 | 35.6 C (96.1 F) |
| 1962 | 33.3 C (91.9 F) |
| 1963 | 34.4 C (93.9 F) |
| 1964 | 36.1 C (97.0 F) |
| 1965 | 33.9 C (93.0 F) |
| 1966 | 35.6 C (96.1 F) |
| 1967 | 38.3 C (100.9 F) |
| 1968 | 34.4 C (93.9 F) |
| 1969 | 33.9 C (93.0 F) |
| 1970 | 36.1 C (97.0 F) |
| 1971 | 36.7 C (98.1 F) |
| 1972 | 33.9 C (93.0 F) |
| 1973 | 35.0 C (95.0 F) |
| 1974 | 37.2 C (99.0 F) |
| 1975 | 33.9 C (93.0 F) |
| 1976 | 37.2 C (99.0 F) |
| 1977 | 36.7 C (98.1 F) |
| 1978 | 33.9 C (93.0 F) |
| 1979 | 35.6 C (96.1 F) |
| 1980 | 38.3 C (100.9 F) |
| 1981 | 35.6 C (96.1 F) |
| 1982 | 34.4 C (93.9 F) |
| 1983 | 36.7 C (98.1 F) |
| 1984 | 37.2 C (99.0 F) |
| 1985 | 39.4 C (102.9 F) |
| 1986 | 35.0 C (95.0 F) |
| 1987 | 36.7 C (98.1 F) |
| 1988 | 40.0 C (104.0 F) |
| 1989 | 37.2 C (99.0 F) |
| 1990 | 37.2 C (99.0 F) |
| 1991 | 35.0 C (95.0 F) |
| 1992 | 32.2 C (90.0 F) |
| 1993 | 33.3 C (91.9 F) |
| 1994 | 33.9 C (93.0 F) |
| 1995 | 37.8 C (100.0 F) |
| 1996 | 33.9 C (93.0 F) |
| 1997 | 36.1 C (97.0 F) |
| 1998 | 34.4 C (93.9 F) |
| 1999 | 36.1 C (97.0 F) |
| 2000 | 39.4 C (102.9 F) |
| 2001 | 30.6 C (87.1 F) |
| 2002 | 38.3 C (100.9 F) |
| 2003 | 37.2 C (99.0 F) |
| 2004 | 34.4 C (93.9 F) |
| 2005 | 37.8 C (100.0 F) |
| 2006 | 40.6 C (105.1 F) |
| 2007 | 36.1 C (97.0 F) |
| 2008 | 36.7 C (98.1 F) |
| 2009 | 34.4 C (93.9 F) |
| 2010 | 35.0 C (95.0 F) |
| 2011 | 36.1 C (97.0 F) |
| 2012 | 38.9 C (102.0 F) |
| 2013 | 37.8 C (100.0 F) |
| 2014 | 33.3 C (91.9 F) |
| 2015 | 35.0 C (95.0 F) |
| 2016 | 35.6 C (96.1 F) |
| 2017 | 35.0 C (95.0 F) |
| 2018 | 36.7 C (98.1 F) |
| 2019 | 36.7 C (98.1 F) |
| 2020 | 35.0 C (95.0 F) |
| 2021 | 37.8 C (100.0 F) |
| 2022 | 37.2 C (99.0 F) |
| 2023 | 37.2 C (99.0 F) |
| 2024 | 35.6 C (96.1 F) |
| 2025 | 36.1 C (97.0 F) |
| 2026 | 36.7 C (98.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1937 | -26.7 C (-16.1 F) |
| 1938 | -27.8 C (-18.0 F) |
| 1939 | -30.0 C (-22.0 F) |
| 1940 | -30.6 C (-23.1 F) |
| 1941 | -21.7 C (-7.1 F) |
| 1942 | -31.7 C (-25.1 F) |
| 1943 | -30.6 C (-23.1 F) |
| 1944 | -28.9 C (-20.0 F) |
| 1945 | -25.6 C (-14.1 F) |
| 1946 | -27.2 C (-17.0 F) |
| 1947 | -23.9 C (-11.0 F) |
| 1948 | -31.7 C (-25.1 F) |
| 1949 | -30.0 C (-22.0 F) |
| 1950 | -29.4 C (-20.9 F) |
| 1951 | -28.3 C (-18.9 F) |
| 1952 | -25.6 C (-14.1 F) |
| 1953 | -29.4 C (-20.9 F) |
| 1954 | -27.8 C (-18.0 F) |
| 1955 | -28.3 C (-18.9 F) |
| 1956 | -29.4 C (-20.9 F) |
| 1957 | -32.2 C (-26.0 F) |
| 1958 | -32.8 C (-27.0 F) |
| 1959 | -30.0 C (-22.0 F) |
| 1960 | -30.0 C (-22.0 F) |
| 1961 | -27.8 C (-18.0 F) |
| 1962 | -31.7 C (-25.1 F) |
| 1963 | -29.4 C (-20.9 F) |
| 1964 | -28.3 C (-18.9 F) |
| 1965 | -30.6 C (-23.1 F) |
| 1966 | -31.1 C (-24.0 F) |
| 1967 | -31.7 C (-25.1 F) |
| 1968 | -31.7 C (-25.1 F) |
| 1969 | -30.0 C (-22.0 F) |
| 1970 | -35.6 C (-32.1 F) |
| 1971 | -30.0 C (-22.0 F) |
| 1972 | -29.4 C (-20.9 F) |
| 1973 | -27.2 C (-17.0 F) |
| 1974 | -33.9 C (-29.0 F) |
| 1975 | -31.7 C (-25.1 F) |
| 1976 | -28.9 C (-20.0 F) |
| 1977 | -29.4 C (-20.9 F) |
| 1978 | -29.4 C (-20.9 F) |
| 1979 | -32.2 C (-26.0 F) |
| 1980 | -27.8 C (-18.0 F) |
| 1981 | -31.7 C (-25.1 F) |
| 1982 | -31.7 C (-25.1 F) |
| 1983 | -31.7 C (-25.1 F) |
| 1984 | -26.7 C (-16.1 F) |
| 1985 | -28.9 C (-20.0 F) |
| 1986 | -25.6 C (-14.1 F) |
| 1987 | -24.4 C (-11.9 F) |
| 1988 | -30.0 C (-22.0 F) |
| 1989 | -33.3 C (-27.9 F) |
| 1990 | -30.0 C (-22.0 F) |
| 1991 | -25.0 C (-13.0 F) |
| 1992 | -23.9 C (-11.0 F) |
| 1993 | -27.2 C (-17.0 F) |
| 1994 | -28.3 C (-18.9 F) |
| 1995 | -25.6 C (-14.1 F) |
| 1996 | -32.8 C (-27.0 F) |
| 1997 | -28.3 C (-18.9 F) |
| 1998 | -24.4 C (-11.9 F) |
| 1999 | -28.9 C (-20.0 F) |
| 2000 | -21.1 C (-6.0 F) |
| 2001 | -19.4 C (-2.9 F) |
| 2002 | -24.4 C (-11.9 F) |
| 2003 | -24.4 C (-11.9 F) |
| 2004 | -26.1 C (-15.0 F) |
| 2005 | -26.1 C (-15.0 F) |
| 2006 | -25.0 C (-13.0 F) |
| 2007 | -30.6 C (-23.1 F) |
| 2008 | -31.7 C (-25.1 F) |
| 2009 | -29.4 C (-20.9 F) |
| 2010 | -32.8 C (-27.0 F) |
| 2011 | -25.0 C (-13.0 F) |
| 2012 | -22.8 C (-9.0 F) |
| 2013 | -23.3 C (-9.9 F) |
| 2014 | -26.7 C (-16.1 F) |
| 2015 | -27.2 C (-17.0 F) |
| 2016 | -28.3 C (-18.9 F) |
| 2017 | -26.7 C (-16.1 F) |
| 2018 | -31.7 C (-25.1 F) |
| 2019 | -29.4 C (-20.9 F) |
| 2020 | -26.1 C (-15.0 F) |
| 2021 | -37.2 C (-35.0 F) |
| 2022 | -27.8 C (-18.0 F) |
| 2023 | -24.4 C (-11.9 F) |
| 2024 | -31.1 C (-24.0 F) |
| 2025 | -30.0 C (-22.0 F) |
| 2026 | -25.6 C (-14.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1937 | 5.3 mm (0.21 in) |
| 1938 | 78.7 mm (3.1 in) |
| 1939 | 38.1 mm (1.5 in) |
| 1940 | 115.3 mm (4.5 in) |
| 1941 | 53.6 mm (2.1 in) |
| 1942 | 65.0 mm (2.6 in) |
| 1943 | 52.6 mm (2.1 in) |
| 1944 | 105.4 mm (4.1 in) |
| 1945 | 58.4 mm (2.3 in) |
| 1946 | 81.3 mm (3.2 in) |
| 1947 | 41.4 mm (1.6 in) |
| 1948 | 47.5 mm (1.9 in) |
| 1949 | 44.5 mm (1.8 in) |
| 1950 | 75.2 mm (3.0 in) |
| 1951 | 49.5 mm (1.9 in) |
| 1952 | 86.4 mm (3.4 in) |
| 1953 | 91.9 mm (3.6 in) |
| 1954 | 67.6 mm (2.7 in) |
| 1955 | 34.0 mm (1.3 in) |
| 1956 | 40.4 mm (1.6 in) |
| 1957 | 34.5 mm (1.4 in) |
| 1958 | 54.9 mm (2.2 in) |
| 1959 | 53.1 mm (2.1 in) |
| 1960 | 73.2 mm (2.9 in) |
| 1961 | 46.5 mm (1.8 in) |
| 1962 | 46.0 mm (1.8 in) |
| 1963 | 69.3 mm (2.7 in) |
| 1964 | 59.9 mm (2.4 in) |
| 1965 | 35.6 mm (1.4 in) |
| 1966 | 69.1 mm (2.7 in) |
| 1967 | 54.6 mm (2.1 in) |
| 1968 | 47.2 mm (1.9 in) |
| 1969 | 57.2 mm (2.3 in) |
| 1970 | 54.4 mm (2.1 in) |
| 1971 | 38.1 mm (1.5 in) |
| 1972 | 55.4 mm (2.2 in) |
| 1973 | 45.5 mm (1.8 in) |
| 1974 | 64.0 mm (2.5 in) |
| 1975 | 59.7 mm (2.4 in) |
| 1976 | 75.7 mm (3.0 in) |
| 1977 | 100.3 mm (3.9 in) |
| 1978 | 79.5 mm (3.1 in) |
| 1979 | 71.1 mm (2.8 in) |
| 1980 | 50.8 mm (2.0 in) |
| 1981 | 62.5 mm (2.5 in) |
| 1982 | 90.2 mm (3.6 in) |
| 1983 | 58.9 mm (2.3 in) |
| 1984 | 66.0 mm (2.6 in) |
| 1985 | 32.5 mm (1.3 in) |
| 1986 | 74.9 mm (2.9 in) |
| 1987 | 51.1 mm (2.0 in) |
| 1988 | 103.1 mm (4.1 in) |
| 1989 | 50.0 mm (2.0 in) |
| 1990 | 57.7 mm (2.3 in) |
| 1991 | 76.5 mm (3.0 in) |
| 1992 | 68.6 mm (2.7 in) |
| 1993 | 101.3 mm (4.0 in) |
| 1994 | 45.7 mm (1.8 in) |
| 1995 | 90.7 mm (3.6 in) |
| 1996 | 248.2 mm (9.8 in) |
| 1997 | 35.3 mm (1.4 in) |
| 1998 | 67.3 mm (2.6 in) |
| 1999 | 58.7 mm (2.3 in) |
| 2000 | 26.7 mm (1.1 in) |
| 2001 | 28.2 mm (1.1 in) |
| 2002 | 52.1 mm (2.1 in) |
| 2003 | 87.4 mm (3.4 in) |
| 2004 | 51.1 mm (2.0 in) |
| 2005 | 55.9 mm (2.2 in) |
| 2006 | 54.9 mm (2.2 in) |
| 2007 | 71.1 mm (2.8 in) |
| 2008 | 66.5 mm (2.6 in) |
| 2009 | 64.8 mm (2.6 in) |
| 2010 | 77.5 mm (3.1 in) |
| 2011 | 43.7 mm (1.7 in) |
| 2012 | 56.1 mm (2.2 in) |
| 2013 | 52.1 mm (2.1 in) |
| 2014 | 85.9 mm (3.4 in) |
| 2015 | 72.6 mm (2.9 in) |
| 2016 | 53.3 mm (2.1 in) |
| 2017 | 74.7 mm (2.9 in) |
| 2018 | 59.4 mm (2.3 in) |
| 2019 | 57.7 mm (2.3 in) |
| 2020 | 60.7 mm (2.4 in) |
| 2021 | 59.9 mm (2.4 in) |
| 2022 | 45.5 mm (1.8 in) |
| 2023 | 59.2 mm (2.3 in) |
| 2024 | 50.3 mm (2.0 in) |
| 2025 | 51.8 mm (2.0 in) |
| 2026 | 69.6 mm (2.7 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1937 | 5.3 mm (0.21 in) |
| 1938 | 166.3 mm (6.5 in) |
| 1939 | 95.0 mm (3.7 in) |
| 1940 | 126.2 mm (5.0 in) |
| 1941 | 74.1 mm (2.9 in) |
| 1942 | 100.6 mm (4.0 in) |
| 1943 | 88.6 mm (3.5 in) |
| 1944 | 168.4 mm (6.6 in) |
| 1945 | 78.0 mm (3.1 in) |
| 1946 | 115.8 mm (4.6 in) |
| 1947 | 65.2 mm (2.6 in) |
| 1948 | 62.5 mm (2.5 in) |
| 1949 | 58.7 mm (2.3 in) |
| 1950 | 84.1 mm (3.3 in) |
| 1951 | 132.1 mm (5.2 in) |
| 1952 | 100.4 mm (4.0 in) |
| 1953 | 107.1 mm (4.2 in) |
| 1954 | 122.8 mm (4.8 in) |
| 1955 | 41.9 mm (1.6 in) |
| 1956 | 53.5 mm (2.1 in) |
| 1957 | 59.9 mm (2.4 in) |
| 1958 | 57.9 mm (2.3 in) |
| 1959 | 102.4 mm (4.0 in) |
| 1960 | 96.7 mm (3.8 in) |
| 1961 | 51.8 mm (2.0 in) |
| 1962 | 86.8 mm (3.4 in) |
| 1963 | 123.6 mm (4.9 in) |
| 1964 | 89.4 mm (3.5 in) |
| 1965 | 87.8 mm (3.5 in) |
| 1966 | 101.1 mm (4.0 in) |
| 1967 | 129.1 mm (5.1 in) |
| 1968 | 127.8 mm (5.0 in) |
| 1969 | 60.6 mm (2.4 in) |
| 1970 | 102.4 mm (4.0 in) |
| 1971 | 88.2 mm (3.5 in) |
| 1972 | 89.7 mm (3.5 in) |
| 1973 | 103.4 mm (4.1 in) |
| 1974 | 107.9 mm (4.2 in) |
| 1975 | 98.1 mm (3.9 in) |
| 1976 | 104.7 mm (4.1 in) |
| 1977 | 124.9 mm (4.9 in) |
| 1978 | 152.4 mm (6.0 in) |
| 1979 | 94.0 mm (3.7 in) |
| 1980 | 71.4 mm (2.8 in) |
| 1981 | 105.7 mm (4.2 in) |
| 1982 | 120.9 mm (4.8 in) |
| 1983 | 84.0 mm (3.3 in) |
| 1984 | 110.5 mm (4.4 in) |
| 1985 | 75.3 mm (3.0 in) |
| 1986 | 121.3 mm (4.8 in) |
| 1987 | 102.8 mm (4.0 in) |
| 1988 | 112.5 mm (4.4 in) |
| 1989 | 85.3 mm (3.4 in) |
| 1990 | 146.8 mm (5.8 in) |
| 1991 | 122.2 mm (4.8 in) |
| 1992 | 133.3 mm (5.2 in) |
| 1993 | 146.0 mm (5.7 in) |
| 1994 | 82.8 mm (3.3 in) |
| 1995 | 90.7 mm (3.6 in) |
| 1996 | 259.2 mm (10.2 in) |
| 1997 | 55.3 mm (2.2 in) |
| 1998 | 92.9 mm (3.7 in) |
| 1999 | 74.4 mm (2.9 in) |
| 2000 | 34.6 mm (1.4 in) |
| 2001 | 61.5 mm (2.4 in) |
| 2002 | 91.5 mm (3.6 in) |
| 2003 | 155.2 mm (6.1 in) |
| 2004 | 59.2 mm (2.3 in) |
| 2005 | 78.0 mm (3.1 in) |
| 2006 | 71.2 mm (2.8 in) |
| 2007 | 115.5 mm (4.5 in) |
| 2008 | 107.4 mm (4.2 in) |
| 2009 | 102.3 mm (4.0 in) |
| 2010 | 133.1 mm (5.2 in) |
| 2011 | 62.5 mm (2.5 in) |
| 2012 | 65.0 mm (2.6 in) |
| 2013 | 100.7 mm (4.0 in) |
| 2014 | 112.3 mm (4.4 in) |
| 2015 | 108.9 mm (4.3 in) |
| 2016 | 72.4 mm (2.9 in) |
| 2017 | 124.5 mm (4.9 in) |
| 2018 | 87.3 mm (3.4 in) |
| 2019 | 100.9 mm (4.0 in) |
| 2020 | 66.1 mm (2.6 in) |
| 2021 | 72.9 mm (2.9 in) |
| 2022 | 64.8 mm (2.6 in) |
| 2023 | 76.2 mm (3.0 in) |
| 2024 | 73.2 mm (2.9 in) |
| 2025 | 74.9 mm (2.9 in) |
| 2026 | 140.9 mm (5.5 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1937 | 25 days |
| 1938 | 27 days |
| 1939 | 52 days |
| 1940 | 20 days |
| 1941 | 21 days |
| 1942 | 31 days |
| 1943 | 28 days |
| 1944 | 30 days |
| 1945 | 37 days |
| 1946 | 28 days |
| 1947 | 26 days |
| 1948 | 24 days |
| 1949 | 50 days |
| 1950 | 31 days |
| 1951 | 34 days |
| 1952 | 56 days |
| 1953 | 27 days |
| 1954 | 35 days |
| 1955 | 28 days |
| 1956 | 28 days |
| 1957 | 38 days |
| 1958 | 63 days |
| 1959 | 28 days |
| 1960 | 34 days |
| 1961 | 30 days |
| 1962 | 48 days |
| 1963 | 29 days |
| 1964 | 20 days |
| 1965 | 27 days |
| 1966 | 26 days |
| 1967 | 30 days |
| 1968 | 31 days |
| 1969 | 19 days |
| 1970 | 25 days |
| 1971 | 32 days |
| 1972 | 28 days |
| 1973 | 33 days |
| 1974 | 30 days |
| 1975 | 25 days |
| 1976 | 42 days |
| 1977 | 18 days |
| 1978 | 20 days |
| 1979 | 39 days |
| 1980 | 25 days |
| 1981 | 30 days |
| 1982 | 16 days |
| 1983 | 21 days |
| 1984 | 48 days |
| 1985 | 22 days |
| 1986 | 34 days |
| 1987 | 23 days |
| 1988 | 28 days |
| 1989 | 28 days |
| 1990 | 26 days |
| 1991 | 22 days |
| 1992 | 23 days |
| 1993 | 22 days |
| 1994 | 45 days |
| 1995 | 26 days |
| 1996 | 25 days |
| 1997 | 22 days |
| 1998 | 49 days |
| 1999 | 45 days |
| 2000 | 17 days |
| 2001 | 31 days |
| 2002 | 30 days |
| 2003 | 20 days |
| 2004 | 25 days |
| 2005 | 30 days |
| 2006 | 26 days |
| 2007 | 42 days |
| 2008 | 20 days |
| 2009 | 32 days |
| 2010 | 29 days |
| 2011 | 24 days |
| 2012 | 33 days |
| 2013 | 27 days |
| 2014 | 30 days |
| 2015 | 26 days |
| 2016 | 41 days |
| 2017 | 38 days |
| 2018 | 24 days |
| 2019 | 37 days |
| 2020 | 20 days |
| 2021 | 29 days |
| 2022 | 26 days |
| 2023 | 26 days |
| 2024 | 41 days |
| 2025 | 30 days |
| 2026 | 19 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
77 years with a frostAcross 77 years with a frost, the median last spring frost at Mapleton No.2 falls on 3 May and the median first autumn frost on 2 October, which leaves a median of 155 days between them.
In 1989 to 2025 the median growing season was 155 days. That is 2 days more than in 1938 to 1969.
Fitted over all years, the growing season changes by +0.6 days per decade at this station.
| Measure | Median, all years | Earliest period (1938 to 1969) | Recent period (1989 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 3 May | 4 May | 3 May | 1 day earlier | +0.2 days per decade |
| First autumn frost | 2 October | 30 September | 6 October | 6 days later | +0.7 days per decade |
| Growing days | 155 days | 153 days | 155 days | 2 days more | +0.6 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
83 years, 1938 to 2025A day with at least 59.6 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 118.1 mm (4.6 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 59.6 mm (2.3 in) | |
| 5 years | 75.8 mm (3.0 in) | |
| 10 years | 86.4 mm (3.4 in) | |
| 25 years | 99.4 mm (3.9 in) | |
| 50 years | 108.9 mm (4.3 in) | |
| 100 years | 118.1 mm (4.6 in) | Longer than the 83 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, 83 years of values from 1938 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: 115.3 mm (4.5 in) in 1940; 105.4 mm (4.1 in) in 1944; 103.1 mm (4.1 in) in 1988.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2008 to 2025 against 1961 to 1990Over 2008 to 2025, Mapleton No.2 had a mean temperature of 8.8 C (47.8 F) and 812.0 mm (32.0 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Marengo (United States, 589 km away), Bellevue L/D 12 (United States, 439 km away) and Perry (United States, 142 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Marengo | United States | 589 km (366 mi) | 8.7 C (47.6 F) | 896.9 mm (35.3 in) | 0.76 |
| Bellevue L/D 12 | United States | 439 km (273 mi) | 9.1 C (48.3 F) | 850.5 mm (33.5 in) | 0.77 |
| Perry | United States | 142 km (88 mi) | 8.8 C (47.8 F) | 804.7 mm (31.7 in) | 0.79 |
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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-13).