Nephi Weather Records (USC00426135)
Record envelope, standing records and threshold days for Nephi (USC00426135), Utah, United States, with 123 years of record.
Key Facts for Nephi
- Nephi (USC00426135) is a weather station in Utah, United States at 39.71 latitude and -111.83 longitude, 1,569 m (5,146 ft) above sea level.
- The station reports from 1904 to 2026, 123 years of record.
- 1,464 records set at Nephi still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Nephi set a daily record precipitation of 5.8 mm (0.23 in) on 27 August 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Utah, United States, 39.71 latitude, -111.83 longitude.
- Elevation: 1,569 m (5,146 ft).
- Period of record: 1904 to 2026, 123 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
23 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) | -27.8 C (-18.0 F) | 13.3 C (55.9 F) | -13.9 C (7.0 F) |
| Feb | 23.9 C (75.0 F) | -28.9 C (-20.0 F) | 17.2 C (63.0 F) | -5.6 C (21.9 F) |
| Mar | 31.1 C (88.0 F) | -17.8 C (0.0 F) | 31.1 C (88.0 F) | -7.2 C (19.0 F) |
| Apr | 32.8 C (91.0 F) | -10.0 C (14.0 F) | 26.7 C (80.1 F) | -5.6 C (21.9 F) |
| May | 36.7 C (98.1 F) | -10.0 C (14.0 F) | 33.9 C (93.0 F) | 0.0 C (32.0 F) |
| Jun | 43.3 C (109.9 F) | -2.2 C (28.0 F) | 35.6 C (96.1 F) | 3.3 C (37.9 F) |
| Jul | 41.7 C (107.1 F) | 3.3 C (37.9 F) | 41.7 C (107.1 F) | 11.1 C (52.0 F) |
| Aug | 42.8 C (109.0 F) | 1.7 C (35.1 F) | 40.0 C (104.0 F) | 12.8 C (55.0 F) |
| Sep | 41.1 C (106.0 F) | -5.0 C (23.0 F) | n/a | n/a |
| Oct | 33.9 C (93.0 F) | -13.9 C (7.0 F) | n/a | n/a |
| Nov | 26.1 C (79.0 F) | -20.0 C (-4.0 F) | n/a | n/a |
| Dec | 21.1 C (70.0 F) | -29.4 C (-20.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1942 | 1 |
| 1943 | 18 |
| 1944 | 11 |
| 1945 | 17 |
| 1946 | 10 |
| 1947 | 22 |
| 1948 | 9 |
| 1949 | 24 |
| 1950 | 43 |
| 1951 | 15 |
| 1952 | 32 |
| 1953 | 26 |
| 1954 | 20 |
| 1955 | 20 |
| 1956 | 25 |
| 1957 | 13 |
| 1958 | 24 |
| 1959 | 12 |
| 1960 | 17 |
| 1961 | 12 |
| 1962 | 40 |
| 1963 | 17 |
| 1964 | 18 |
| 1965 | 28 |
| 1966 | 21 |
| 1967 | 18 |
| 1968 | 19 |
| 1969 | 14 |
| 1970 | 22 |
| 1971 | 17 |
| 1972 | 23 |
| 1973 | 9 |
| 1974 | 6 |
| 1975 | 25 |
| 1976 | 13 |
| 1977 | 8 |
| 1978 | 13 |
| 1979 | 10 |
| 1980 | 12 |
| 1981 | 10 |
| 1982 | 24 |
| 1983 | 9 |
| 1984 | 14 |
| 1985 | 21 |
| 1986 | 17 |
| 1987 | 15 |
| 1988 | 16 |
| 1989 | 27 |
| 1990 | 23 |
| 1991 | 8 |
| 1992 | 18 |
| 1993 | 11 |
| 1994 | 14 |
| 1995 | 13 |
| 1996 | 24 |
| 1997 | 5 |
| 1998 | 11 |
| 1999 | 12 |
| 2000 | 15 |
| 2001 | 17 |
| 2002 | 38 |
| 2003 | 21 |
| 2004 | 17 |
| 2005 | 8 |
| 2006 | 12 |
| 2007 | 19 |
| 2008 | 11 |
| 2009 | 17 |
| 2010 | 14 |
| 2011 | 15 |
| 2012 | 16 |
| 2013 | 30 |
| 2014 | 17 |
| 2015 | 25 |
| 2016 | 16 |
| 2017 | 18 |
| 2018 | 7 |
| 2019 | 13 |
| 2020 | 24 |
| 2021 | 16 |
| 2022 | 17 |
| 2023 | 13 |
| 2024 | 11 |
| 2025 | 14 |
| 2026 | 27 |
All-Time Record Progression
4 new records| Date | Kind | Detail |
|---|---|---|
| 1989-02-06 | Record low minimum temperature | Record low minimum temperature -28.9 C (-20.0 F) |
| 1990-12-23 | Record low minimum temperature | Record low minimum temperature -29.4 C (-20.9 F) |
| 1993-01-11 | Record snow depth | Record snow depth 55.9 cm (22.0 in) |
| 2002-07-06 | Record high minimum temperature | Record high minimum temperature 25.0 C (77.0 F) |
Wettest Day of Each Month
Jul: 47.0 mm (1.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 28.4 mm (1.1 in) | 3 January 1997 |
| Feb | 33.3 mm (1.3 in) | 12 February 2012 |
| Mar | 38.9 mm (1.5 in) | 21 March 1944 |
| Apr | 35.6 mm (1.4 in) | 2 April 1986 |
| May | 37.6 mm (1.5 in) | 3 May 1999 |
| Jun | 46.2 mm (1.8 in) | 1 June 1943 |
| Jul | 47.0 mm (1.9 in) | 21 July 1943 |
| Aug | 34.5 mm (1.4 in) | 18 August 1965 |
| Sep | 38.1 mm (1.5 in) | 18 September 1978 |
| Oct | 44.5 mm (1.8 in) | 20 October 1979 |
| Nov | 31.5 mm (1.2 in) | 22 November 1996 |
| Dec | 36.8 mm (1.4 in) | 30 December 1951 |
Period of Record Coverage
1913 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1913 | 20 | 5% | No |
| 1942 | 51 | 14% | No |
| 1943 | 364 | 100% | Yes |
| 1944 | 365 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 364 | 100% | Yes |
| 1948 | 179 | 49% | No |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 358 | 98% | Yes |
| 1956 | 353 | 96% | Yes |
| 1957 | 358 | 98% | Yes |
| 1958 | 363 | 99% | Yes |
| 1959 | 363 | 99% | Yes |
| 1960 | 365 | 100% | Yes |
| 1961 | 364 | 100% | Yes |
| 1962 | 364 | 100% | Yes |
| 1963 | 334 | 92% | Yes |
| 1964 | 335 | 92% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 362 | 99% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 364 | 99% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 364 | 100% | Yes |
| 1975 | 358 | 98% | Yes |
| 1976 | 362 | 99% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 316 | 87% | No |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 360 | 99% | Yes |
| 1982 | 359 | 98% | Yes |
| 1983 | 355 | 97% | Yes |
| 1984 | 362 | 99% | Yes |
| 1985 | 360 | 99% | Yes |
| 1986 | 359 | 98% | Yes |
| 1987 | 356 | 98% | Yes |
| 1988 | 361 | 99% | Yes |
| 1989 | 347 | 95% | Yes |
| 1990 | 337 | 92% | Yes |
| 1991 | 340 | 93% | Yes |
| 1992 | 365 | 100% | Yes |
| 1993 | 349 | 96% | Yes |
| 1994 | 360 | 99% | Yes |
| 1995 | 360 | 99% | Yes |
| 1996 | 363 | 99% | Yes |
| 1997 | 361 | 99% | Yes |
| 1998 | 356 | 98% | Yes |
| 1999 | 360 | 99% | Yes |
| 2000 | 359 | 98% | Yes |
| 2001 | 350 | 96% | Yes |
| 2002 | 359 | 98% | Yes |
| 2003 | 354 | 97% | Yes |
| 2004 | 335 | 92% | Yes |
| 2005 | 337 | 92% | Yes |
| 2006 | 325 | 89% | No |
| 2007 | 365 | 100% | Yes |
| 2008 | 328 | 90% | No |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 364 | 100% | 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 | 364 | 100% | Yes |
| 2020 | 364 | 99% | Yes |
| 2021 | 355 | 97% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 360 | 99% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 364 | 100% | Yes |
| 2026 | 228 | 62% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 27 August 2026 | Nephi, US | daily rain (Provisional) | 5.8 mm (0.23 in) | 1.0 mm (0.04 in) | 73 years | 20 of 100 (Routine) |
| 27 August 2026 | Nephi, US | daily high max (Tie, Provisional) | 36.1 C (97.0 F) | tie | 68 years | 7 of 100 (Routine) |
| 24 August 2026 | Nephi, US | daily high min (Provisional) | 21.7 C (71.1 F) | 0.6 C (1.1 F) | 5 years | 12 of 100 (Routine) |
| 21 August 2026 | Nephi, US | daily high min (Provisional) | 21.1 C (70.0 F) | 1.1 C (2.0 F) | 20 years | 19 of 100 (Routine) |
| 21 August 2026 | Nephi, US | daily high max (Tie, Provisional) | 37.2 C (99.0 F) | tie | 65 years | 7 of 100 (Routine) |
| 20 August 2026 | Nephi, US | daily high min (Provisional) | 21.1 C (70.0 F) | 1.7 C (3.1 F) | 52 years | 30 of 100 (Routine) |
| 20 August 2026 | Nephi, US | daily high max (Tie, Provisional) | 38.3 C (100.9 F) | tie | 0 years | 2 of 100 (Routine) |
| 9 August 2026 | Nephi, US | daily high min | 22.8 C (73.0 F) | 2.8 C (5.0 F) | 81 years | 42 of 100 (Notable) |
| 8 August 2026 | Nephi, US | daily high min | 22.8 C (73.0 F) | 1.1 C (2.0 F) | 40 years | 25 of 100 (Routine) |
| 7 August 2026 | Nephi, US | daily high max (Tie) | 39.4 C (102.9 F) | tie | 68 years | 7 of 100 (Routine) |
| 2 August 2026 | Nephi, US | daily high max | 39.4 C (102.9 F) | 0.5 C (0.9 F) | 5 years | 12 of 100 (Routine) |
| 2 August 2026 | Nephi, US | daily high min (Tie) | 21.7 C (71.1 F) | tie | 17 years | 3 of 100 (Routine) |
| 1 August 2026 | Nephi, US | daily high max | 40.0 C (104.0 F) | 0.6 C (1.1 F) | 75 years | 33 of 100 (Routine) |
| 31 July 2026 | Nephi, US | daily high max | 38.9 C (102.0 F) | 0.6 C (1.1 F) | 5 years | 13 of 100 (Routine) |
| 27 July 2026 | Nephi, US | daily high min | 21.7 C (71.1 F) | 1.1 C (2.0 F) | 17 years | 18 of 100 (Routine) |
| 26 July 2026 | Nephi, US | daily high max | 40.0 C (104.0 F) | 1.1 C (2.0 F) | 65 years | 32 of 100 (Routine) |
| 26 July 2026 | Nephi, US | daily high min | 24.4 C (75.9 F) | 2.2 C (4.0 F) | 17 years | 21 of 100 (Routine) |
| 25 July 2026 | Nephi, US | daily high max | 38.3 C (100.9 F) | 0.5 C (0.9 F) | 83 years | 35 of 100 (Notable) |
| 21 July 2026 | Nephi, US | daily high min (Tie) | 21.7 C (71.1 F) | tie | 9 years | 3 of 100 (Routine) |
| 20 July 2026 | Nephi, US | daily high max (Tie) | 38.9 C (102.0 F) | tie | 36 years | 5 of 100 (Routine) |
Climate Trend
77 complete years, 1943 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1943 | 11.4 C | +0.81 C |
| 1944 | 9.8 C | -0.79 C |
| 1945 | 10.3 C | -0.35 C |
| 1946 | 11.0 C | +0.39 C |
| 1947 | 10.8 C | +0.13 C |
| 1949 | 10.4 C | -0.21 C |
| 1950 | 11.6 C | +0.99 C |
| 1951 | 10.9 C | +0.28 C |
| 1952 | 11.2 C | +0.56 C |
| 1953 | 11.7 C | +1.08 C |
| 1954 | 12.0 C | +1.34 C |
| 1955 | 10.3 C | -0.32 C |
| 1956 | 10.3 C | -0.33 C |
| 1957 | 10.6 C | -0.01 C |
| 1958 | 11.6 C | +0.97 C |
| 1959 | 10.9 C | +0.29 C |
| 1960 | 10.8 C | +0.19 C |
| 1961 | 10.4 C | -0.27 C |
| 1962 | 10.5 C | -0.09 C |
| 1965 | 10.0 C | -0.62 C |
| 1966 | 10.7 C | +0.09 C |
| 1967 | 10.1 C | -0.48 C |
| 1968 | 9.6 C | -1.07 C |
| 1969 | 10.8 C | +0.19 C |
| 1970 | 10.0 C | -0.60 C |
| 1971 | 9.4 C | -1.22 C |
| 1972 | 10.4 C | -0.21 C |
| 1973 | 9.8 C | -0.84 C |
| 1974 | 10.4 C | -0.23 C |
| 1975 | 9.0 C | -1.60 C |
| 1976 | 10.2 C | -0.47 C |
| 1977 | 11.1 C | +0.52 C |
| 1979 | 10.1 C | -0.55 C |
| 1980 | 10.7 C | +0.11 C |
| 1981 | 11.5 C | +0.83 C |
| 1982 | 9.2 C | -1.47 C |
| 1983 | 10.2 C | -0.45 C |
| 1984 | 8.8 C | -1.83 C |
| 1985 | 9.5 C | -1.08 C |
| 1986 | 11.5 C | +0.87 C |
| 1987 | 11.0 C | +0.42 C |
| 1988 | 10.7 C | +0.11 C |
| 1989 | 11.0 C | +0.39 C |
| 1990 | 11.1 C | +0.52 C |
| 1991 | 10.3 C | -0.36 C |
| 1992 | 11.2 C | +0.58 C |
| 1993 | 9.4 C | -1.24 C |
| 1994 | 11.0 C | +0.34 C |
| 1995 | 10.8 C | +0.15 C |
| 1996 | 10.9 C | +0.31 C |
| 1997 | 10.1 C | -0.53 C |
| 1998 | 10.5 C | -0.09 C |
| 1999 | 11.5 C | +0.83 C |
| 2000 | 11.5 C | +0.84 C |
| 2001 | 10.2 C | -0.40 C |
| 2002 | 9.7 C | -0.96 C |
| 2003 | 12.1 C | +1.46 C |
| 2004 | 11.1 C | +0.44 C |
| 2005 | 11.0 C | +0.36 C |
| 2007 | 11.2 C | +0.56 C |
| 2009 | 9.5 C | -1.11 C |
| 2010 | 9.9 C | -0.69 C |
| 2011 | 9.3 C | -1.35 C |
| 2012 | 11.6 C | +0.93 C |
| 2013 | 9.2 C | -1.42 C |
| 2014 | 11.1 C | +0.43 C |
| 2015 | 11.5 C | +0.85 C |
| 2016 | 10.9 C | +0.25 C |
| 2017 | 11.0 C | +0.42 C |
| 2018 | 11.0 C | +0.38 C |
| 2019 | 10.0 C | -0.66 C |
| 2020 | 11.3 C | +0.72 C |
| 2021 | 11.4 C | +0.82 C |
| 2022 | 10.5 C | -0.08 C |
| 2023 | 10.4 C | -0.22 C |
| 2024 | 11.6 C | +0.94 C |
| 2025 | 12.0 C | +1.41 C |
The fitted trend in annual mean temperature here over 1943 to 2025 is 0.02 C (-0.05 to 0.09) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.04 F (-0.09 to 0.17) 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 | 0.02 C (-0.05 to 0.09) per decade | 0.04 F (-0.09 to 0.17) per decade | 1943 to 2025 | 77 | Not clearly different from zero |
| Mean daily maximum | -0.2 C (-0.3 to -0.1) per decade | -0.3 F (-0.5 to -0.1) per decade | 1943 to 2025 | 77 | Fall |
| Mean daily minimum | 0.2 C (0.1 to 0.3) per decade | 0.4 F (0.2 to 0.5) per decade | 1943 to 2025 | 77 | 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
1904 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.3 C (109.9 F) | 1970 | 38.3 C (100.9 F) | 86 |
| Coldest night (TNn) | -29.4 C (-20.9 F) | 1990 | -20.0 C (-4.0 F) | 86 |
| Wettest day (Rx1day) | 47.0 mm (1.9 in) | 1943 | 24.7 mm (1.0 in) | 94 |
| Wettest five days (Rx5day) | 109.8 mm (4.3 in) | 1982 | 42.7 mm (1.7 in) | 94 |
| Longest dry spell (CDD) | 81 days | 1958 | 34 days | 94 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1904 | n/a |
| 1905 | n/a |
| 1906 | n/a |
| 1907 | n/a |
| 1908 | n/a |
| 1909 | n/a |
| 1910 | n/a |
| 1913 | 31.7 C (89.1 F) |
| 1941 | n/a |
| 1942 | 20.0 C (68.0 F) |
| 1943 | 38.9 C (102.0 F) |
| 1944 | 37.2 C (99.0 F) |
| 1945 | 37.8 C (100.0 F) |
| 1946 | 38.9 C (102.0 F) |
| 1947 | 38.3 C (100.9 F) |
| 1948 | 38.3 C (100.9 F) |
| 1949 | 38.9 C (102.0 F) |
| 1950 | 41.1 C (106.0 F) |
| 1951 | 40.6 C (105.1 F) |
| 1952 | 40.6 C (105.1 F) |
| 1953 | 39.4 C (102.9 F) |
| 1954 | 40.6 C (105.1 F) |
| 1955 | 39.4 C (102.9 F) |
| 1956 | 38.3 C (100.9 F) |
| 1957 | 37.8 C (100.0 F) |
| 1958 | 42.8 C (109.0 F) |
| 1959 | 40.6 C (105.1 F) |
| 1960 | 41.1 C (106.0 F) |
| 1961 | 38.9 C (102.0 F) |
| 1962 | 40.0 C (104.0 F) |
| 1963 | 38.3 C (100.9 F) |
| 1964 | 38.3 C (100.9 F) |
| 1965 | 37.2 C (99.0 F) |
| 1966 | 39.4 C (102.9 F) |
| 1967 | 37.2 C (99.0 F) |
| 1968 | 37.2 C (99.0 F) |
| 1969 | 38.3 C (100.9 F) |
| 1970 | 43.3 C (109.9 F) |
| 1971 | 38.3 C (100.9 F) |
| 1972 | 38.9 C (102.0 F) |
| 1973 | 39.4 C (102.9 F) |
| 1974 | 38.3 C (100.9 F) |
| 1975 | 36.7 C (98.1 F) |
| 1976 | 40.0 C (104.0 F) |
| 1977 | 38.3 C (100.9 F) |
| 1978 | 37.8 C (100.0 F) |
| 1979 | 38.3 C (100.9 F) |
| 1980 | 37.2 C (99.0 F) |
| 1981 | 38.3 C (100.9 F) |
| 1982 | 37.8 C (100.0 F) |
| 1983 | 37.8 C (100.0 F) |
| 1984 | 38.3 C (100.9 F) |
| 1985 | 40.6 C (105.1 F) |
| 1986 | 39.4 C (102.9 F) |
| 1987 | 36.7 C (98.1 F) |
| 1988 | 37.8 C (100.0 F) |
| 1989 | 41.1 C (106.0 F) |
| 1990 | 38.9 C (102.0 F) |
| 1991 | 37.8 C (100.0 F) |
| 1992 | 37.8 C (100.0 F) |
| 1993 | 36.1 C (97.0 F) |
| 1994 | 38.9 C (102.0 F) |
| 1995 | 38.9 C (102.0 F) |
| 1996 | 38.9 C (102.0 F) |
| 1997 | 35.6 C (96.1 F) |
| 1998 | 38.9 C (102.0 F) |
| 1999 | 37.2 C (99.0 F) |
| 2000 | 36.7 C (98.1 F) |
| 2001 | 39.4 C (102.9 F) |
| 2002 | 41.1 C (106.0 F) |
| 2003 | 37.8 C (100.0 F) |
| 2004 | 35.6 C (96.1 F) |
| 2005 | 37.2 C (99.0 F) |
| 2006 | 37.2 C (99.0 F) |
| 2007 | 37.2 C (99.0 F) |
| 2008 | 35.6 C (96.1 F) |
| 2009 | 36.7 C (98.1 F) |
| 2010 | 36.7 C (98.1 F) |
| 2011 | 35.6 C (96.1 F) |
| 2012 | 36.7 C (98.1 F) |
| 2013 | 37.8 C (100.0 F) |
| 2014 | 36.1 C (97.0 F) |
| 2015 | 37.8 C (100.0 F) |
| 2016 | 37.2 C (99.0 F) |
| 2017 | 37.2 C (99.0 F) |
| 2018 | 36.7 C (98.1 F) |
| 2019 | 37.2 C (99.0 F) |
| 2020 | 38.9 C (102.0 F) |
| 2021 | 38.9 C (102.0 F) |
| 2022 | 38.3 C (100.9 F) |
| 2023 | 38.9 C (102.0 F) |
| 2024 | 38.9 C (102.0 F) |
| 2025 | 38.3 C (100.9 F) |
| 2026 | 41.7 C (107.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1904 | n/a |
| 1905 | n/a |
| 1906 | n/a |
| 1907 | n/a |
| 1908 | n/a |
| 1909 | n/a |
| 1910 | n/a |
| 1913 | 0.6 C (33.1 F) |
| 1941 | n/a |
| 1942 | -13.9 C (7.0 F) |
| 1943 | -19.4 C (-2.9 F) |
| 1944 | -19.4 C (-2.9 F) |
| 1945 | -15.6 C (3.9 F) |
| 1946 | -18.9 C (-2.0 F) |
| 1947 | -23.9 C (-11.0 F) |
| 1948 | -21.7 C (-7.1 F) |
| 1949 | -27.8 C (-18.0 F) |
| 1950 | -21.7 C (-7.1 F) |
| 1951 | -22.8 C (-9.0 F) |
| 1952 | -24.4 C (-11.9 F) |
| 1953 | -16.1 C (3.0 F) |
| 1954 | -16.7 C (1.9 F) |
| 1955 | -22.2 C (-8.0 F) |
| 1956 | -22.2 C (-8.0 F) |
| 1957 | -18.9 C (-2.0 F) |
| 1958 | -16.7 C (1.9 F) |
| 1959 | -19.4 C (-2.9 F) |
| 1960 | -23.3 C (-9.9 F) |
| 1961 | -22.2 C (-8.0 F) |
| 1962 | -25.0 C (-13.0 F) |
| 1963 | -26.7 C (-16.1 F) |
| 1964 | -23.9 C (-11.0 F) |
| 1965 | -16.1 C (3.0 F) |
| 1966 | -18.9 C (-2.0 F) |
| 1967 | -18.3 C (-0.9 F) |
| 1968 | -20.0 C (-4.0 F) |
| 1969 | -16.7 C (1.9 F) |
| 1970 | -21.1 C (-6.0 F) |
| 1971 | -26.1 C (-15.0 F) |
| 1972 | -25.6 C (-14.1 F) |
| 1973 | -22.2 C (-8.0 F) |
| 1974 | -20.6 C (-5.1 F) |
| 1975 | -19.4 C (-2.9 F) |
| 1976 | -20.6 C (-5.1 F) |
| 1977 | -18.9 C (-2.0 F) |
| 1978 | -22.8 C (-9.0 F) |
| 1979 | -25.0 C (-13.0 F) |
| 1980 | -23.3 C (-9.9 F) |
| 1981 | -17.8 C (0.0 F) |
| 1982 | -27.8 C (-18.0 F) |
| 1983 | -18.9 C (-2.0 F) |
| 1984 | -26.1 C (-15.0 F) |
| 1985 | -26.1 C (-15.0 F) |
| 1986 | -17.2 C (1.0 F) |
| 1987 | -22.8 C (-9.0 F) |
| 1988 | -26.7 C (-16.1 F) |
| 1989 | -28.9 C (-20.0 F) |
| 1990 | -29.4 C (-20.9 F) |
| 1991 | -18.9 C (-2.0 F) |
| 1992 | -19.4 C (-2.9 F) |
| 1993 | -20.0 C (-4.0 F) |
| 1994 | -17.2 C (1.0 F) |
| 1995 | -18.3 C (-0.9 F) |
| 1996 | -23.3 C (-9.9 F) |
| 1997 | -23.3 C (-9.9 F) |
| 1998 | -25.6 C (-14.1 F) |
| 1999 | -13.9 C (7.0 F) |
| 2000 | -14.4 C (6.1 F) |
| 2001 | -21.1 C (-6.0 F) |
| 2002 | -18.9 C (-2.0 F) |
| 2003 | -16.1 C (3.0 F) |
| 2004 | -18.9 C (-2.0 F) |
| 2005 | -16.7 C (1.9 F) |
| 2006 | -18.9 C (-2.0 F) |
| 2007 | -22.2 C (-8.0 F) |
| 2008 | -17.2 C (1.0 F) |
| 2009 | -24.4 C (-11.9 F) |
| 2010 | -20.0 C (-4.0 F) |
| 2011 | -21.1 C (-6.0 F) |
| 2012 | -16.1 C (3.0 F) |
| 2013 | -23.3 C (-9.9 F) |
| 2014 | -20.0 C (-4.0 F) |
| 2015 | -19.4 C (-2.9 F) |
| 2016 | -21.7 C (-7.1 F) |
| 2017 | -20.0 C (-4.0 F) |
| 2018 | -17.8 C (0.0 F) |
| 2019 | -20.6 C (-5.1 F) |
| 2020 | -15.6 C (3.9 F) |
| 2021 | -13.3 C (8.1 F) |
| 2022 | -18.3 C (-0.9 F) |
| 2023 | -20.0 C (-4.0 F) |
| 2024 | -12.8 C (9.0 F) |
| 2025 | -15.0 C (5.0 F) |
| 2026 | -13.9 C (7.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1904 | 11.4 mm (0.4 in) |
| 1905 | 30.5 mm (1.2 in) |
| 1906 | 27.9 mm (1.1 in) |
| 1907 | 20.8 mm (0.8 in) |
| 1908 | 33.8 mm (1.3 in) |
| 1909 | 26.7 mm (1.1 in) |
| 1910 | 19.6 mm (0.8 in) |
| 1913 | 23.4 mm (0.9 in) |
| 1941 | 19.6 mm (0.8 in) |
| 1942 | 19.8 mm (0.8 in) |
| 1943 | 47.0 mm (1.9 in) |
| 1944 | 38.9 mm (1.5 in) |
| 1945 | 18.5 mm (0.7 in) |
| 1946 | 40.6 mm (1.6 in) |
| 1947 | 27.4 mm (1.1 in) |
| 1948 | 22.4 mm (0.9 in) |
| 1949 | 23.1 mm (0.9 in) |
| 1950 | 18.0 mm (0.7 in) |
| 1951 | 36.8 mm (1.4 in) |
| 1952 | 18.8 mm (0.7 in) |
| 1953 | 26.2 mm (1.0 in) |
| 1954 | 19.8 mm (0.8 in) |
| 1955 | 20.3 mm (0.8 in) |
| 1956 | 27.7 mm (1.1 in) |
| 1957 | 28.7 mm (1.1 in) |
| 1958 | 14.7 mm (0.6 in) |
| 1959 | 15.2 mm (0.6 in) |
| 1960 | 20.8 mm (0.8 in) |
| 1961 | 23.6 mm (0.9 in) |
| 1962 | 14.5 mm (0.6 in) |
| 1963 | 27.9 mm (1.1 in) |
| 1964 | 19.8 mm (0.8 in) |
| 1965 | 34.5 mm (1.4 in) |
| 1966 | 27.4 mm (1.1 in) |
| 1967 | 19.3 mm (0.8 in) |
| 1968 | 21.1 mm (0.8 in) |
| 1969 | 25.9 mm (1.0 in) |
| 1970 | 22.4 mm (0.9 in) |
| 1971 | 22.4 mm (0.9 in) |
| 1972 | 21.6 mm (0.9 in) |
| 1973 | 16.8 mm (0.7 in) |
| 1974 | 29.5 mm (1.2 in) |
| 1975 | 27.2 mm (1.1 in) |
| 1976 | 18.5 mm (0.7 in) |
| 1977 | 33.3 mm (1.3 in) |
| 1978 | 38.1 mm (1.5 in) |
| 1979 | 44.5 mm (1.8 in) |
| 1980 | 20.8 mm (0.8 in) |
| 1981 | 25.4 mm (1.0 in) |
| 1982 | 36.8 mm (1.4 in) |
| 1983 | 25.9 mm (1.0 in) |
| 1984 | 19.6 mm (0.8 in) |
| 1985 | 31.0 mm (1.2 in) |
| 1986 | 35.6 mm (1.4 in) |
| 1987 | 28.4 mm (1.1 in) |
| 1988 | 17.8 mm (0.7 in) |
| 1989 | 33.3 mm (1.3 in) |
| 1990 | 25.4 mm (1.0 in) |
| 1991 | 22.6 mm (0.9 in) |
| 1992 | 20.3 mm (0.8 in) |
| 1993 | 23.4 mm (0.9 in) |
| 1994 | 26.2 mm (1.0 in) |
| 1995 | 31.0 mm (1.2 in) |
| 1996 | 31.5 mm (1.2 in) |
| 1997 | 28.4 mm (1.1 in) |
| 1998 | 20.1 mm (0.8 in) |
| 1999 | 37.6 mm (1.5 in) |
| 2000 | 20.8 mm (0.8 in) |
| 2001 | 23.9 mm (0.9 in) |
| 2002 | 29.5 mm (1.2 in) |
| 2003 | 24.1 mm (0.9 in) |
| 2004 | 22.9 mm (0.9 in) |
| 2005 | 24.9 mm (1.0 in) |
| 2006 | 32.0 mm (1.3 in) |
| 2007 | 18.0 mm (0.7 in) |
| 2008 | 20.8 mm (0.8 in) |
| 2009 | 24.4 mm (1.0 in) |
| 2010 | 25.4 mm (1.0 in) |
| 2011 | 23.4 mm (0.9 in) |
| 2012 | 33.3 mm (1.3 in) |
| 2013 | 15.5 mm (0.6 in) |
| 2014 | 23.1 mm (0.9 in) |
| 2015 | 31.0 mm (1.2 in) |
| 2016 | 36.1 mm (1.4 in) |
| 2017 | 29.5 mm (1.2 in) |
| 2018 | 24.9 mm (1.0 in) |
| 2019 | 24.9 mm (1.0 in) |
| 2020 | 13.0 mm (0.5 in) |
| 2021 | 28.2 mm (1.1 in) |
| 2022 | 25.7 mm (1.0 in) |
| 2023 | 32.3 mm (1.3 in) |
| 2024 | 22.9 mm (0.9 in) |
| 2025 | 23.6 mm (0.9 in) |
| 2026 | 23.6 mm (0.9 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1904 | 26.4 mm (1.0 in) |
| 1905 | 49.2 mm (1.9 in) |
| 1906 | 47.3 mm (1.9 in) |
| 1907 | 40.2 mm (1.6 in) |
| 1908 | 46.2 mm (1.8 in) |
| 1909 | 39.3 mm (1.5 in) |
| 1910 | 24.9 mm (1.0 in) |
| 1913 | 90.1 mm (3.5 in) |
| 1941 | 43.5 mm (1.7 in) |
| 1942 | 33.8 mm (1.3 in) |
| 1943 | 79.8 mm (3.1 in) |
| 1944 | 41.9 mm (1.6 in) |
| 1945 | 41.2 mm (1.6 in) |
| 1946 | 69.5 mm (2.7 in) |
| 1947 | 32.0 mm (1.3 in) |
| 1948 | 24.9 mm (1.0 in) |
| 1949 | 47.0 mm (1.9 in) |
| 1950 | 25.9 mm (1.0 in) |
| 1951 | 62.2 mm (2.4 in) |
| 1952 | 62.2 mm (2.4 in) |
| 1953 | 57.5 mm (2.3 in) |
| 1954 | 41.4 mm (1.6 in) |
| 1955 | 40.1 mm (1.6 in) |
| 1956 | 32.5 mm (1.3 in) |
| 1957 | 38.6 mm (1.5 in) |
| 1958 | 24.7 mm (1.0 in) |
| 1959 | 30.5 mm (1.2 in) |
| 1960 | 45.0 mm (1.8 in) |
| 1961 | 37.8 mm (1.5 in) |
| 1962 | 37.5 mm (1.5 in) |
| 1963 | 36.3 mm (1.4 in) |
| 1964 | 44.6 mm (1.8 in) |
| 1965 | 40.8 mm (1.6 in) |
| 1966 | 58.4 mm (2.3 in) |
| 1967 | 36.0 mm (1.4 in) |
| 1968 | 44.0 mm (1.7 in) |
| 1969 | 50.2 mm (2.0 in) |
| 1970 | 49.8 mm (2.0 in) |
| 1971 | 47.0 mm (1.9 in) |
| 1972 | 34.3 mm (1.4 in) |
| 1973 | 34.5 mm (1.4 in) |
| 1974 | 36.9 mm (1.5 in) |
| 1975 | 33.6 mm (1.3 in) |
| 1976 | 18.5 mm (0.7 in) |
| 1977 | 44.5 mm (1.8 in) |
| 1978 | 48.7 mm (1.9 in) |
| 1979 | 46.6 mm (1.8 in) |
| 1980 | 50.2 mm (2.0 in) |
| 1981 | 47.2 mm (1.9 in) |
| 1982 | 109.8 mm (4.3 in) |
| 1983 | 53.4 mm (2.1 in) |
| 1984 | 53.3 mm (2.1 in) |
| 1985 | 46.2 mm (1.8 in) |
| 1986 | 55.9 mm (2.2 in) |
| 1987 | 31.0 mm (1.2 in) |
| 1988 | 32.4 mm (1.3 in) |
| 1989 | 53.0 mm (2.1 in) |
| 1990 | 25.4 mm (1.0 in) |
| 1991 | 36.9 mm (1.5 in) |
| 1992 | 47.7 mm (1.9 in) |
| 1993 | 43.7 mm (1.7 in) |
| 1994 | 57.5 mm (2.3 in) |
| 1995 | 48.8 mm (1.9 in) |
| 1996 | 40.7 mm (1.6 in) |
| 1997 | 41.9 mm (1.6 in) |
| 1998 | 55.3 mm (2.2 in) |
| 1999 | 46.8 mm (1.8 in) |
| 2000 | 37.7 mm (1.5 in) |
| 2001 | 31.1 mm (1.2 in) |
| 2002 | 52.4 mm (2.1 in) |
| 2003 | 35.6 mm (1.4 in) |
| 2004 | 51.4 mm (2.0 in) |
| 2005 | 49.7 mm (2.0 in) |
| 2006 | 33.5 mm (1.3 in) |
| 2007 | 27.2 mm (1.1 in) |
| 2008 | 38.6 mm (1.5 in) |
| 2009 | 53.1 mm (2.1 in) |
| 2010 | 52.4 mm (2.1 in) |
| 2011 | 44.3 mm (1.7 in) |
| 2012 | 35.9 mm (1.4 in) |
| 2013 | 23.2 mm (0.9 in) |
| 2014 | 35.1 mm (1.4 in) |
| 2015 | 35.3 mm (1.4 in) |
| 2016 | 38.9 mm (1.5 in) |
| 2017 | 55.5 mm (2.2 in) |
| 2018 | 62.3 mm (2.5 in) |
| 2019 | 38.8 mm (1.5 in) |
| 2020 | 24.7 mm (1.0 in) |
| 2021 | 56.4 mm (2.2 in) |
| 2022 | 48.6 mm (1.9 in) |
| 2023 | 57.4 mm (2.3 in) |
| 2024 | 43.6 mm (1.7 in) |
| 2025 | 40.3 mm (1.6 in) |
| 2026 | 27.5 mm (1.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1904 | 61 days |
| 1905 | 29 days |
| 1906 | 45 days |
| 1907 | 36 days |
| 1908 | 33 days |
| 1909 | 22 days |
| 1910 | 28 days |
| 1913 | 15 days |
| 1941 | 14 days |
| 1942 | 48 days |
| 1943 | 37 days |
| 1944 | 45 days |
| 1945 | 28 days |
| 1946 | 36 days |
| 1947 | 21 days |
| 1948 | 31 days |
| 1949 | 31 days |
| 1950 | 45 days |
| 1951 | 35 days |
| 1952 | 76 days |
| 1953 | 49 days |
| 1954 | 29 days |
| 1955 | 29 days |
| 1956 | 43 days |
| 1957 | 33 days |
| 1958 | 81 days |
| 1959 | 35 days |
| 1960 | 51 days |
| 1961 | 48 days |
| 1962 | 36 days |
| 1963 | 27 days |
| 1964 | 38 days |
| 1965 | 29 days |
| 1966 | 60 days |
| 1967 | 27 days |
| 1968 | 25 days |
| 1969 | 28 days |
| 1970 | 22 days |
| 1971 | 37 days |
| 1972 | 26 days |
| 1973 | 31 days |
| 1974 | 54 days |
| 1975 | 61 days |
| 1976 | 42 days |
| 1977 | 28 days |
| 1978 | 72 days |
| 1979 | 58 days |
| 1980 | 42 days |
| 1981 | 25 days |
| 1982 | 21 days |
| 1983 | 25 days |
| 1984 | 28 days |
| 1985 | 34 days |
| 1986 | 23 days |
| 1987 | 38 days |
| 1988 | 33 days |
| 1989 | 26 days |
| 1990 | 25 days |
| 1991 | 27 days |
| 1992 | 37 days |
| 1993 | 32 days |
| 1994 | 31 days |
| 1995 | 39 days |
| 1996 | 40 days |
| 1997 | 30 days |
| 1998 | 19 days |
| 1999 | 32 days |
| 2000 | 38 days |
| 2001 | 48 days |
| 2002 | 49 days |
| 2003 | 39 days |
| 2004 | 31 days |
| 2005 | 41 days |
| 2006 | 44 days |
| 2007 | 44 days |
| 2008 | 51 days |
| 2009 | 30 days |
| 2010 | 45 days |
| 2011 | 37 days |
| 2012 | 33 days |
| 2013 | 37 days |
| 2014 | 30 days |
| 2015 | 42 days |
| 2016 | 34 days |
| 2017 | 34 days |
| 2018 | 40 days |
| 2019 | 36 days |
| 2020 | 47 days |
| 2021 | 31 days |
| 2022 | 32 days |
| 2023 | 32 days |
| 2024 | 29 days |
| 2025 | 44 days |
| 2026 | 32 days |
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
77 years with a frostAcross 77 years with a frost, the median last spring frost at Nephi falls on 14 May and the median first autumn frost on 4 October, which leaves a median of 140 days between them.
In 1994 to 2025 the median growing season was 154 days. That is 17 days more than in 1943 to 1975.
Fitted over all years, the growing season changes by +2.2 days per decade at this station.
| Measure | Median, all years | Earliest period (1943 to 1975) | Recent period (1994 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 14 May | 15 May | 10 May | 5 days earlier | -0.6 days per decade |
| First autumn frost | 4 October | 3 October | 11 October | 8 days later | +1.6 days per decade |
| Growing days | 140 days | 137 days | 154 days | 17 days more | +2.2 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
89 years, 1905 to 2025A day with at least 25.0 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 46.3 mm (1.8 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 25.0 mm (1.0 in) | |
| 5 years | 31.3 mm (1.2 in) | |
| 10 years | 35.2 mm (1.4 in) | |
| 25 years | 39.9 mm (1.6 in) | |
| 50 years | 43.2 mm (1.7 in) | |
| 100 years | 46.3 mm (1.8 in) | Longer than the 89 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, 89 years of values from 1905 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: 47.0 mm (1.9 in) in 1943; 44.5 mm (1.8 in) in 1979; 40.6 mm (1.6 in) in 1946.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Nephi, at 1976 and 1994. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1976 ran 0.5 C (1.0 F) higher than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1994 ran 0.5 C (0.9 F) lower than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1976 | +0.5 | +1.0 | likely | 5 |
| 1994 | -0.5 | -0.9 | 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, Nephi had a mean temperature of 10.9 C (51.5 F) and 320.6 mm (12.6 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Salt Lake City Intl AP (United States, 118 km away), Saltair Salt Plt (United States, 120 km away) and Kanosh (United States, 115 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Salt Lake City Intl AP | United States | 118 km (73 mi) | 11.0 C (51.9 F) | 412.1 mm (16.2 in) | 0.66 |
| Saltair Salt Plt | United States | 120 km (75 mi) | 10.4 C (50.7 F) | 310.5 mm (12.2 in) | 0.72 |
| Kanosh | United States | 115 km (71 mi) | 11.3 C (52.3 F) | 390.8 mm (15.4 in) | 0.74 |
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).