Idaho Falls 16 SE Weather Records (USC00104456)
Record envelope, standing records and threshold days for Idaho Falls 16 SE (USC00104456), Idaho, United States, with 72 years of record.
Key Facts for Idaho Falls 16 SE
- Idaho Falls 16 SE (USC00104456) is a weather station in Idaho, United States at 43.35 latitude and -111.78 longitude, 1,776 m (5,828 ft) above sea level.
- The station reports from 1955 to 2026, 72 years of record.
- 1,464 records set at Idaho Falls 16 SE still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Idaho Falls 16 SE tied a daily record high minimum temperature of 7.8 C (46.0 F) on 8 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Idaho, United States, 43.35 latitude, -111.78 longitude.
- Elevation: 1,776 m (5,828 ft).
- Period of record: 1955 to 2026, 72 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
25 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 11.1 C (52.0 F) | -46.1 C (-51.0 F) | 7.8 C (46.0 F) | -22.8 C (-9.0 F) |
| Feb | 15.6 C (60.1 F) | -40.0 C (-40.0 F) | 13.3 C (55.9 F) | -20.0 C (-4.0 F) |
| Mar | 23.3 C (73.9 F) | -31.1 C (-24.0 F) | 23.3 C (73.9 F) | -7.8 C (18.0 F) |
| Apr | 26.7 C (80.1 F) | -17.8 C (0.0 F) | 22.2 C (72.0 F) | -13.3 C (8.1 F) |
| May | 32.2 C (90.0 F) | -13.9 C (7.0 F) | 28.3 C (82.9 F) | -1.1 C (30.0 F) |
| Jun | 36.1 C (97.0 F) | -6.1 C (21.0 F) | 30.6 C (87.1 F) | 2.8 C (37.0 F) |
| Jul | 37.8 C (100.0 F) | -2.2 C (28.0 F) | 37.8 C (100.0 F) | 10.0 C (50.0 F) |
| Aug | 37.2 C (99.0 F) | -7.2 C (19.0 F) | 36.1 C (97.0 F) | 2.8 C (37.0 F) |
| Sep | 34.4 C (93.9 F) | -13.9 C (7.0 F) | 26.7 C (80.1 F) | -1.1 C (30.0 F) |
| Oct | 27.8 C (82.0 F) | -28.3 C (-18.9 F) | 26.1 C (79.0 F) | 4.4 C (39.9 F) |
| Nov | 21.1 C (70.0 F) | -31.7 C (-25.1 F) | n/a | n/a |
| Dec | 13.3 C (55.9 F) | -41.1 C (-42.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1960 | 11 |
| 1961 | 21 |
| 1962 | 36 |
| 1963 | 27 |
| 1964 | 24 |
| 1965 | 26 |
| 1966 | 27 |
| 1967 | 14 |
| 1968 | 18 |
| 1969 | 25 |
| 1970 | 24 |
| 1971 | 26 |
| 1972 | 21 |
| 1973 | 15 |
| 1974 | 26 |
| 1975 | 29 |
| 1976 | 20 |
| 1977 | 16 |
| 1978 | 9 |
| 1979 | 18 |
| 1980 | 27 |
| 1981 | 21 |
| 1982 | 21 |
| 1983 | 21 |
| 1984 | 20 |
| 1985 | 24 |
| 1986 | 30 |
| 1987 | 22 |
| 1988 | 24 |
| 1989 | 26 |
| 1990 | 26 |
| 1991 | 10 |
| 1992 | 28 |
| 1993 | 19 |
| 1994 | 16 |
| 1995 | 26 |
| 1996 | 28 |
| 1997 | 13 |
| 1998 | 5 |
| 1999 | 22 |
| 2000 | 21 |
| 2001 | 20 |
| 2002 | 23 |
| 2003 | 43 |
| 2004 | 10 |
| 2005 | 12 |
| 2006 | 21 |
| 2007 | 6 |
| 2008 | 18 |
| 2009 | 9 |
| 2010 | 18 |
| 2011 | 10 |
| 2012 | 24 |
| 2013 | 25 |
| 2014 | 14 |
| 2015 | 29 |
| 2016 | 13 |
| 2017 | 16 |
| 2018 | 9 |
| 2019 | 15 |
| 2020 | 22 |
| 2021 | 20 |
| 2022 | 36 |
| 2023 | 35 |
| 2024 | 15 |
| 2025 | 44 |
| 2026 | 74 |
All-Time Record Progression
13 new records| Date | Kind | Detail |
|---|---|---|
| 1986-11-21 | Record daily precipitation | Record daily precipitation 53.3 mm (2.1 in) |
| 1990-12-22 | Record low maximum temperature | Record low maximum temperature -25.6 C (-14.1 F) |
| 1991-08-01 | Record high minimum temperature | Record high minimum temperature 18.9 C (66.0 F) |
| 1993-05-06 | Record daily precipitation | Record daily precipitation 55.6 mm (2.2 in) |
| 2002-07-13 | Record high maximum temperature | Record high maximum temperature 37.8 C (100.0 F) |
| 2022-08-01 | Record high minimum temperature | Record high minimum temperature 20.6 C (69.1 F) |
| 2024-03-03 | Record daily snowfall | Record daily snowfall 63.5 cm (25.0 in) |
| 2024-03-03 | Record snow depth | Record snow depth 101.6 cm (40.0 in) |
| 2024-03-04 | Record snow depth | Record snow depth 109.2 cm (43.0 in) |
| 2024-03-05 | Record snow depth | Record snow depth 111.8 cm (44.0 in) |
| 2026-07-18 | Record high minimum temperature | Record high minimum temperature 21.7 C (71.1 F) |
| 2026-07-22 | Record high minimum temperature | Record high minimum temperature 22.8 C (73.0 F) |
| 2026-07-24 | Record high minimum temperature | Record high minimum temperature 24.4 C (75.9 F) |
Wettest Day of Each Month
May: 55.6 mm (2.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 35.6 mm (1.4 in) | 21 January 1969 |
| Feb | 50.8 mm (2.0 in) | 22 February 1998 |
| Mar | 30.7 mm (1.2 in) | 21 March 1995 |
| Apr | 32.8 mm (1.3 in) | 6 April 1957 |
| May | 55.6 mm (2.2 in) | 6 May 1993 |
| Jun | 38.9 mm (1.5 in) | 10 June 2004 |
| Jul | 46.5 mm (1.8 in) | 30 July 2021 |
| Aug | 44.4 mm (1.7 in) | 1 August 2011 |
| Sep | 49.5 mm (1.9 in) | 3 September 2013 |
| Oct | 24.9 mm (1.0 in) | 2 October 2015 |
| Nov | 53.3 mm (2.1 in) | 21 November 1986 |
| Dec | 38.9 mm (1.5 in) | 25 December 2008 |
Period of Record Coverage
1960 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1960 | 261 | 71% | No |
| 1961 | 364 | 100% | Yes |
| 1962 | 364 | 100% | Yes |
| 1963 | 364 | 100% | Yes |
| 1964 | 305 | 83% | No |
| 1965 | 365 | 100% | Yes |
| 1966 | 363 | 99% | Yes |
| 1967 | 363 | 99% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 333 | 91% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 325 | 89% | No |
| 1976 | 366 | 100% | Yes |
| 1977 | 332 | 91% | Yes |
| 1978 | 334 | 92% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 364 | 100% | Yes |
| 1982 | 361 | 99% | Yes |
| 1983 | 362 | 99% | Yes |
| 1984 | 364 | 99% | Yes |
| 1985 | 333 | 91% | Yes |
| 1986 | 363 | 99% | Yes |
| 1987 | 359 | 98% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 363 | 99% | Yes |
| 1990 | 361 | 99% | Yes |
| 1991 | 363 | 99% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 363 | 99% | Yes |
| 1994 | 329 | 90% | Yes |
| 1995 | 350 | 96% | Yes |
| 1996 | 323 | 88% | No |
| 1997 | 290 | 79% | No |
| 1998 | 351 | 96% | Yes |
| 1999 | 330 | 90% | Yes |
| 2000 | 347 | 95% | Yes |
| 2001 | 354 | 97% | Yes |
| 2002 | 357 | 98% | Yes |
| 2003 | 354 | 97% | Yes |
| 2004 | 354 | 97% | Yes |
| 2005 | 350 | 96% | Yes |
| 2006 | 353 | 97% | Yes |
| 2007 | 356 | 98% | Yes |
| 2008 | 344 | 94% | Yes |
| 2009 | 330 | 90% | Yes |
| 2010 | 333 | 91% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 364 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 360 | 98% | Yes |
| 2021 | 363 | 99% | Yes |
| 2022 | 363 | 99% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 347 | 95% | Yes |
| 2025 | 327 | 90% | No |
| 2026 | 264 | 72% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 8 October 2026 | Idaho Falls 16 SE, US | daily high min (Tie, Provisional) | 7.8 C (46.0 F) | tie | 23 years | 3 of 100 (Routine) |
| 7 October 2026 | Idaho Falls 16 SE, US | daily high min (Provisional) | 8.9 C (48.0 F) | 1.7 C (3.1 F) | 23 years | 15 of 100 (Routine) |
| 6 October 2026 | Idaho Falls 16 SE, US | daily high max (Provisional) | 26.1 C (79.0 F) | 1.7 C (3.1 F) | 61 years | 26 of 100 (Routine) |
| 6 October 2026 | Idaho Falls 16 SE, US | daily high min (Provisional) | 11.1 C (52.0 F) | 3.3 C (5.9 F) | 20 years | 18 of 100 (Routine) |
| 5 October 2026 | Idaho Falls 16 SE, US | daily high max (Provisional) | 26.1 C (79.0 F) | 0.5 C (0.9 F) | 32 years | 15 of 100 (Routine) |
| 27 August 2026 | Idaho Falls 16 SE, US | daily high max (Provisional) | 32.2 C (90.0 F) | 0.5 C (0.9 F) | 24 years | 14 of 100 (Routine) |
| 27 August 2026 | Idaho Falls 16 SE, US | daily high min (Provisional) | 17.2 C (63.0 F) | 1.6 C (2.9 F) | 15 years | 14 of 100 (Routine) |
| 22 August 2026 | Idaho Falls 16 SE, US | daily high min (Provisional) | 15.6 C (60.1 F) | 2.8 C (5.0 F) | 23 years | 19 of 100 (Routine) |
| 21 August 2026 | Idaho Falls 16 SE, US | daily high min (Provisional) | 17.2 C (63.0 F) | 2.8 C (5.0 F) | 3 years | 13 of 100 (Routine) |
| 20 August 2026 | Idaho Falls 16 SE, US | daily high min (Tie, Provisional) | 15.0 C (59.0 F) | tie | 44 years | 4 of 100 (Routine) |
| 16 August 2026 | Idaho Falls 16 SE, US | daily high min (Provisional) | 20.0 C (68.0 F) | 3.9 C (7.0 F) | 0 years | 16 of 100 (Routine) |
| 16 August 2026 | Idaho Falls 16 SE, US | daily high max (Provisional) | 35.0 C (95.0 F) | 2.2 C (4.0 F) | 12 years | 14 of 100 (Routine) |
| 15 August 2026 | Idaho Falls 16 SE, US | daily rain (Provisional) | 11.4 mm (0.4 in) | 2.8 mm (0.11 in) | 45 years | 20 of 100 (Routine) |
| 15 August 2026 | Idaho Falls 16 SE, US | daily high min (Provisional) | 17.2 C (63.0 F) | 2.2 C (4.0 F) | 15 years | 15 of 100 (Routine) |
| 13 August 2026 | Idaho Falls 16 SE, US | daily rain | 9.7 mm (0.38 in) | 2.6 mm (0.10 in) | 47 years | 20 of 100 (Routine) |
| 12 August 2026 | Idaho Falls 16 SE, US | daily high max (Tie) | 32.8 C (91.0 F) | tie | 23 years | 3 of 100 (Routine) |
| 11 August 2026 | Idaho Falls 16 SE, US | daily high min | 22.2 C (72.0 F) | 4.4 C (7.9 F) | 56 years | 34 of 100 (Routine) |
| 10 August 2026 | Idaho Falls 16 SE, US | daily high min (Tie) | 16.1 C (61.0 F) | tie | 25 years | 3 of 100 (Routine) |
| 9 August 2026 | Idaho Falls 16 SE, US | daily high max | 33.3 C (91.9 F) | 0.5 C (0.9 F) | 25 years | 14 of 100 (Routine) |
| 9 August 2026 | Idaho Falls 16 SE, US | daily high min | 18.3 C (64.9 F) | 1.6 C (2.9 F) | 13 years | 14 of 100 (Routine) |
Climate Trend
50 complete years, 1961 to 2023| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1961 | 5.2 C | -0.32 C |
| 1962 | 5.4 C | -0.13 C |
| 1963 | 6.0 C | +0.45 C |
| 1965 | 5.1 C | -0.37 C |
| 1966 | 5.4 C | -0.15 C |
| 1967 | 5.5 C | -0.02 C |
| 1968 | 4.8 C | -0.74 C |
| 1969 | 5.4 C | -0.10 C |
| 1970 | 4.9 C | -0.65 C |
| 1971 | 4.4 C | -1.13 C |
| 1972 | 4.9 C | -0.58 C |
| 1974 | 5.0 C | -0.48 C |
| 1976 | 4.9 C | -0.60 C |
| 1979 | 5.0 C | -0.48 C |
| 1980 | 5.8 C | +0.29 C |
| 1981 | 6.1 C | +0.64 C |
| 1982 | 3.9 C | -1.59 C |
| 1983 | 5.3 C | -0.21 C |
| 1984 | 4.1 C | -1.41 C |
| 1986 | 5.8 C | +0.28 C |
| 1987 | 5.6 C | +0.10 C |
| 1988 | 5.4 C | -0.12 C |
| 1989 | 4.9 C | -0.59 C |
| 1990 | 5.2 C | -0.32 C |
| 1991 | 4.9 C | -0.57 C |
| 1992 | 5.6 C | +0.12 C |
| 1993 | 3.4 C | -2.15 C |
| 1995 | 5.6 C | +0.09 C |
| 1998 | 5.4 C | -0.13 C |
| 2001 | 6.2 C | +0.71 C |
| 2002 | 5.3 C | -0.18 C |
| 2003 | 6.9 C | +1.37 C |
| 2004 | 5.9 C | +0.40 C |
| 2005 | 6.1 C | +0.55 C |
| 2006 | 5.7 C | +0.20 C |
| 2007 | 6.2 C | +0.71 C |
| 2008 | 4.9 C | -0.60 C |
| 2011 | 4.8 C | -0.70 C |
| 2012 | 6.9 C | +1.43 C |
| 2013 | 5.6 C | +0.11 C |
| 2014 | 6.9 C | +1.38 C |
| 2015 | 7.5 C | +2.03 C |
| 2016 | 6.3 C | +0.84 C |
| 2017 | 5.9 C | +0.41 C |
| 2018 | 6.3 C | +0.78 C |
| 2019 | 5.6 C | +0.12 C |
| 2020 | 5.6 C | +0.14 C |
| 2021 | 6.6 C | +1.12 C |
| 2022 | 5.5 C | -0.04 C |
| 2023 | 5.6 C | +0.12 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1961 to 2023. In Fahrenheit: 0.3 F (0.2 to 0.5) per decade. The slope is a straight line fitted to 50 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.2 C (0.1 to 0.3) per decade | 0.3 F (0.2 to 0.5) per decade | 1961 to 2023 | 50 | Rise |
| Mean daily maximum | 0.03 C (-0.09 to 0.16) per decade | 0.1 F (-0.2 to 0.3) per decade | 1961 to 2023 | 50 | Not clearly different from zero |
| Mean daily minimum | 0.4 C (0.2 to 0.5) per decade | 0.6 F (0.4 to 0.8) per decade | 1961 to 2023 | 50 | 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
1955 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 37.8 C (100.0 F) | 2002 | 32.8 C (91.0 F) | 67 |
| Coldest night (TNn) | -46.1 C (-51.0 F) | 1963 | -28.9 C (-20.0 F) | 67 |
| Wettest day (Rx1day) | 55.6 mm (2.2 in) | 1993 | 24.1 mm (0.9 in) | 72 |
| Wettest five days (Rx5day) | 83.8 mm (3.3 in) | 1993 | 42.5 mm (1.7 in) | 72 |
| Longest dry spell (CDD) | 60 days | 1956 | 29 days | 72 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1955 | n/a |
| 1956 | n/a |
| 1957 | n/a |
| 1958 | n/a |
| 1959 | n/a |
| 1960 | 35.0 C (95.0 F) |
| 1961 | 34.4 C (93.9 F) |
| 1962 | 32.8 C (91.0 F) |
| 1963 | 32.2 C (90.0 F) |
| 1964 | 31.7 C (89.1 F) |
| 1965 | 32.2 C (90.0 F) |
| 1966 | 34.4 C (93.9 F) |
| 1967 | 31.7 C (89.1 F) |
| 1968 | 31.7 C (89.1 F) |
| 1969 | 34.4 C (93.9 F) |
| 1970 | 32.2 C (90.0 F) |
| 1971 | 32.8 C (91.0 F) |
| 1972 | 32.2 C (90.0 F) |
| 1973 | 32.8 C (91.0 F) |
| 1974 | 34.4 C (93.9 F) |
| 1975 | 33.3 C (91.9 F) |
| 1976 | 32.8 C (91.0 F) |
| 1977 | 32.2 C (90.0 F) |
| 1978 | 32.2 C (90.0 F) |
| 1979 | 33.3 C (91.9 F) |
| 1980 | 31.7 C (89.1 F) |
| 1981 | 35.6 C (96.1 F) |
| 1982 | 31.7 C (89.1 F) |
| 1983 | 37.2 C (99.0 F) |
| 1984 | 31.7 C (89.1 F) |
| 1985 | 32.2 C (90.0 F) |
| 1986 | 31.7 C (89.1 F) |
| 1987 | 30.6 C (87.1 F) |
| 1988 | 35.0 C (95.0 F) |
| 1989 | 33.9 C (93.0 F) |
| 1990 | 33.3 C (91.9 F) |
| 1991 | 32.8 C (91.0 F) |
| 1992 | 31.7 C (89.1 F) |
| 1993 | 28.3 C (82.9 F) |
| 1994 | 32.8 C (91.0 F) |
| 1995 | 32.2 C (90.0 F) |
| 1996 | 32.8 C (91.0 F) |
| 1997 | 31.1 C (88.0 F) |
| 1998 | 34.4 C (93.9 F) |
| 1999 | 31.7 C (89.1 F) |
| 2000 | 35.0 C (95.0 F) |
| 2001 | 36.1 C (97.0 F) |
| 2002 | 37.8 C (100.0 F) |
| 2003 | 35.6 C (96.1 F) |
| 2004 | 32.8 C (91.0 F) |
| 2005 | 33.9 C (93.0 F) |
| 2006 | 33.9 C (93.0 F) |
| 2007 | 34.4 C (93.9 F) |
| 2008 | 32.2 C (90.0 F) |
| 2009 | 32.8 C (91.0 F) |
| 2010 | 32.8 C (91.0 F) |
| 2011 | 31.7 C (89.1 F) |
| 2012 | 34.4 C (93.9 F) |
| 2013 | 35.6 C (96.1 F) |
| 2014 | 32.2 C (90.0 F) |
| 2015 | 33.9 C (93.0 F) |
| 2016 | 32.2 C (90.0 F) |
| 2017 | 33.9 C (93.0 F) |
| 2018 | 35.0 C (95.0 F) |
| 2019 | 32.8 C (91.0 F) |
| 2020 | 34.4 C (93.9 F) |
| 2021 | 35.0 C (95.0 F) |
| 2022 | 35.0 C (95.0 F) |
| 2023 | 35.0 C (95.0 F) |
| 2024 | 35.0 C (95.0 F) |
| 2025 | 36.7 C (98.1 F) |
| 2026 | 37.8 C (100.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1955 | n/a |
| 1956 | n/a |
| 1957 | n/a |
| 1958 | n/a |
| 1959 | n/a |
| 1960 | -23.9 C (-11.0 F) |
| 1961 | -27.8 C (-18.0 F) |
| 1962 | -32.8 C (-27.0 F) |
| 1963 | -46.1 C (-51.0 F) |
| 1964 | -39.4 C (-38.9 F) |
| 1965 | -25.0 C (-13.0 F) |
| 1966 | -31.1 C (-24.0 F) |
| 1967 | -33.9 C (-29.0 F) |
| 1968 | -28.9 C (-20.0 F) |
| 1969 | -22.8 C (-9.0 F) |
| 1970 | -31.1 C (-24.0 F) |
| 1971 | -33.3 C (-27.9 F) |
| 1972 | -41.1 C (-42.0 F) |
| 1973 | -28.3 C (-18.9 F) |
| 1974 | -35.6 C (-32.1 F) |
| 1975 | -32.8 C (-27.0 F) |
| 1976 | -27.2 C (-17.0 F) |
| 1977 | -35.0 C (-31.0 F) |
| 1978 | -25.0 C (-13.0 F) |
| 1979 | -40.0 C (-40.0 F) |
| 1980 | -29.4 C (-20.9 F) |
| 1981 | -33.3 C (-27.9 F) |
| 1982 | -34.4 C (-29.9 F) |
| 1983 | -36.1 C (-33.0 F) |
| 1984 | -35.0 C (-31.0 F) |
| 1985 | -40.0 C (-40.0 F) |
| 1986 | -26.1 C (-15.0 F) |
| 1987 | -32.2 C (-26.0 F) |
| 1988 | -37.2 C (-35.0 F) |
| 1989 | -37.2 C (-35.0 F) |
| 1990 | -40.6 C (-41.1 F) |
| 1991 | -33.3 C (-27.9 F) |
| 1992 | -32.8 C (-27.0 F) |
| 1993 | -31.7 C (-25.1 F) |
| 1994 | -28.3 C (-18.9 F) |
| 1995 | -27.2 C (-17.0 F) |
| 1996 | -31.7 C (-25.1 F) |
| 1997 | -26.7 C (-16.1 F) |
| 1998 | -28.3 C (-18.9 F) |
| 1999 | -26.7 C (-16.1 F) |
| 2000 | -21.7 C (-7.1 F) |
| 2001 | -28.9 C (-20.0 F) |
| 2002 | -26.1 C (-15.0 F) |
| 2003 | -25.0 C (-13.0 F) |
| 2004 | -26.1 C (-15.0 F) |
| 2005 | -26.7 C (-16.1 F) |
| 2006 | -28.9 C (-20.0 F) |
| 2007 | -31.7 C (-25.1 F) |
| 2008 | -27.2 C (-17.0 F) |
| 2009 | -28.9 C (-20.0 F) |
| 2010 | -25.6 C (-14.1 F) |
| 2011 | -28.9 C (-20.0 F) |
| 2012 | -23.3 C (-9.9 F) |
| 2013 | -30.6 C (-23.1 F) |
| 2014 | -26.7 C (-16.1 F) |
| 2015 | -27.8 C (-18.0 F) |
| 2016 | -28.9 C (-20.0 F) |
| 2017 | -31.1 C (-24.0 F) |
| 2018 | -22.8 C (-9.0 F) |
| 2019 | -30.0 C (-22.0 F) |
| 2020 | -31.7 C (-25.1 F) |
| 2021 | -22.8 C (-9.0 F) |
| 2022 | -33.9 C (-29.0 F) |
| 2023 | -38.9 C (-38.0 F) |
| 2024 | -28.9 C (-20.0 F) |
| 2025 | -28.9 C (-20.0 F) |
| 2026 | -22.8 C (-9.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1955 | 18.0 mm (0.7 in) |
| 1956 | 11.9 mm (0.5 in) |
| 1957 | 32.8 mm (1.3 in) |
| 1958 | 20.3 mm (0.8 in) |
| 1959 | 15.7 mm (0.6 in) |
| 1960 | 21.1 mm (0.8 in) |
| 1961 | 22.1 mm (0.9 in) |
| 1962 | 27.2 mm (1.1 in) |
| 1963 | 25.4 mm (1.0 in) |
| 1964 | 24.9 mm (1.0 in) |
| 1965 | 24.6 mm (1.0 in) |
| 1966 | 27.2 mm (1.1 in) |
| 1967 | 21.1 mm (0.8 in) |
| 1968 | 18.3 mm (0.7 in) |
| 1969 | 35.6 mm (1.4 in) |
| 1970 | 20.6 mm (0.8 in) |
| 1971 | 24.1 mm (0.9 in) |
| 1972 | 19.6 mm (0.8 in) |
| 1973 | 22.9 mm (0.9 in) |
| 1974 | 21.6 mm (0.9 in) |
| 1975 | 17.8 mm (0.7 in) |
| 1976 | 23.9 mm (0.9 in) |
| 1977 | 17.3 mm (0.7 in) |
| 1978 | 15.5 mm (0.6 in) |
| 1979 | 19.6 mm (0.8 in) |
| 1980 | 27.9 mm (1.1 in) |
| 1981 | 19.1 mm (0.8 in) |
| 1982 | 22.6 mm (0.9 in) |
| 1983 | 21.6 mm (0.9 in) |
| 1984 | 26.4 mm (1.0 in) |
| 1985 | 21.8 mm (0.9 in) |
| 1986 | 53.3 mm (2.1 in) |
| 1987 | 15.7 mm (0.6 in) |
| 1988 | 22.6 mm (0.9 in) |
| 1989 | 19.1 mm (0.8 in) |
| 1990 | 18.0 mm (0.7 in) |
| 1991 | 28.4 mm (1.1 in) |
| 1992 | 16.8 mm (0.7 in) |
| 1993 | 55.6 mm (2.2 in) |
| 1994 | 23.4 mm (0.9 in) |
| 1995 | 30.7 mm (1.2 in) |
| 1996 | 30.5 mm (1.2 in) |
| 1997 | 29.2 mm (1.1 in) |
| 1998 | 50.8 mm (2.0 in) |
| 1999 | 17.5 mm (0.7 in) |
| 2000 | 12.7 mm (0.5 in) |
| 2001 | 15.2 mm (0.6 in) |
| 2002 | 24.1 mm (0.9 in) |
| 2003 | 22.9 mm (0.9 in) |
| 2004 | 38.9 mm (1.5 in) |
| 2005 | 26.7 mm (1.1 in) |
| 2006 | 33.8 mm (1.3 in) |
| 2007 | 24.1 mm (0.9 in) |
| 2008 | 38.9 mm (1.5 in) |
| 2009 | 24.4 mm (1.0 in) |
| 2010 | 30.5 mm (1.2 in) |
| 2011 | 44.4 mm (1.7 in) |
| 2012 | 27.7 mm (1.1 in) |
| 2013 | 49.5 mm (1.9 in) |
| 2014 | 42.4 mm (1.7 in) |
| 2015 | 31.5 mm (1.2 in) |
| 2016 | 27.9 mm (1.1 in) |
| 2017 | 32.0 mm (1.3 in) |
| 2018 | 35.8 mm (1.4 in) |
| 2019 | 20.3 mm (0.8 in) |
| 2020 | 18.8 mm (0.7 in) |
| 2021 | 46.5 mm (1.8 in) |
| 2022 | 22.9 mm (0.9 in) |
| 2023 | 26.9 mm (1.1 in) |
| 2024 | 23.4 mm (0.9 in) |
| 2025 | 24.1 mm (0.9 in) |
| 2026 | 35.3 mm (1.4 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1955 | 54.2 mm (2.1 in) |
| 1956 | 25.4 mm (1.0 in) |
| 1957 | 37.8 mm (1.5 in) |
| 1958 | 28.1 mm (1.1 in) |
| 1959 | 24.4 mm (1.0 in) |
| 1960 | 44.7 mm (1.8 in) |
| 1961 | 40.2 mm (1.6 in) |
| 1962 | 48.8 mm (1.9 in) |
| 1963 | 48.8 mm (1.9 in) |
| 1964 | 62.2 mm (2.4 in) |
| 1965 | 41.9 mm (1.6 in) |
| 1966 | 31.3 mm (1.2 in) |
| 1967 | 39.6 mm (1.6 in) |
| 1968 | 54.2 mm (2.1 in) |
| 1969 | 71.4 mm (2.8 in) |
| 1970 | 34.4 mm (1.4 in) |
| 1971 | 41.9 mm (1.6 in) |
| 1972 | 42.4 mm (1.7 in) |
| 1973 | 38.1 mm (1.5 in) |
| 1974 | 30.8 mm (1.2 in) |
| 1975 | 36.9 mm (1.5 in) |
| 1976 | 37.3 mm (1.5 in) |
| 1977 | 29.5 mm (1.2 in) |
| 1978 | 30.8 mm (1.2 in) |
| 1979 | 30.5 mm (1.2 in) |
| 1980 | 43.4 mm (1.7 in) |
| 1981 | 42.7 mm (1.7 in) |
| 1982 | 42.6 mm (1.7 in) |
| 1983 | 44.8 mm (1.8 in) |
| 1984 | 50.1 mm (2.0 in) |
| 1985 | 26.4 mm (1.0 in) |
| 1986 | 61.2 mm (2.4 in) |
| 1987 | 32.6 mm (1.3 in) |
| 1988 | 33.0 mm (1.3 in) |
| 1989 | 30.3 mm (1.2 in) |
| 1990 | 25.6 mm (1.0 in) |
| 1991 | 52.8 mm (2.1 in) |
| 1992 | 30.3 mm (1.2 in) |
| 1993 | 83.8 mm (3.3 in) |
| 1994 | 38.4 mm (1.5 in) |
| 1995 | 37.9 mm (1.5 in) |
| 1996 | 47.7 mm (1.9 in) |
| 1997 | 37.3 mm (1.5 in) |
| 1998 | 57.2 mm (2.3 in) |
| 1999 | 36.8 mm (1.4 in) |
| 2000 | 27.2 mm (1.1 in) |
| 2001 | 28.9 mm (1.1 in) |
| 2002 | 36.0 mm (1.4 in) |
| 2003 | 47.5 mm (1.9 in) |
| 2004 | 48.3 mm (1.9 in) |
| 2005 | 46.7 mm (1.8 in) |
| 2006 | 50.3 mm (2.0 in) |
| 2007 | 41.9 mm (1.6 in) |
| 2008 | 61.2 mm (2.4 in) |
| 2009 | 47.8 mm (1.9 in) |
| 2010 | 42.5 mm (1.7 in) |
| 2011 | 56.9 mm (2.2 in) |
| 2012 | 44.2 mm (1.7 in) |
| 2013 | 62.0 mm (2.4 in) |
| 2014 | 60.9 mm (2.4 in) |
| 2015 | 70.3 mm (2.8 in) |
| 2016 | 51.8 mm (2.0 in) |
| 2017 | 52.1 mm (2.1 in) |
| 2018 | 53.6 mm (2.1 in) |
| 2019 | 47.5 mm (1.9 in) |
| 2020 | 36.6 mm (1.4 in) |
| 2021 | 73.7 mm (2.9 in) |
| 2022 | 28.4 mm (1.1 in) |
| 2023 | 42.7 mm (1.7 in) |
| 2024 | 53.2 mm (2.1 in) |
| 2025 | 41.7 mm (1.6 in) |
| 2026 | 40.4 mm (1.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1955 | 9 days |
| 1956 | 60 days |
| 1957 | 19 days |
| 1958 | 43 days |
| 1959 | 32 days |
| 1960 | 22 days |
| 1961 | 31 days |
| 1962 | 30 days |
| 1963 | 40 days |
| 1964 | 40 days |
| 1965 | 44 days |
| 1966 | 29 days |
| 1967 | 40 days |
| 1968 | 22 days |
| 1969 | 60 days |
| 1970 | 20 days |
| 1971 | 32 days |
| 1972 | 23 days |
| 1973 | 27 days |
| 1974 | 26 days |
| 1975 | 43 days |
| 1976 | 40 days |
| 1977 | 44 days |
| 1978 | 31 days |
| 1979 | 31 days |
| 1980 | 39 days |
| 1981 | 34 days |
| 1982 | 12 days |
| 1983 | 26 days |
| 1984 | 31 days |
| 1985 | 23 days |
| 1986 | 31 days |
| 1987 | 49 days |
| 1988 | 38 days |
| 1989 | 30 days |
| 1990 | 22 days |
| 1991 | 27 days |
| 1992 | 29 days |
| 1993 | 36 days |
| 1994 | 30 days |
| 1995 | 27 days |
| 1996 | 29 days |
| 1997 | 20 days |
| 1998 | 19 days |
| 1999 | 25 days |
| 2000 | 21 days |
| 2001 | 49 days |
| 2002 | 32 days |
| 2003 | 39 days |
| 2004 | 20 days |
| 2005 | 25 days |
| 2006 | 24 days |
| 2007 | 45 days |
| 2008 | 22 days |
| 2009 | 25 days |
| 2010 | 25 days |
| 2011 | 21 days |
| 2012 | 25 days |
| 2013 | 25 days |
| 2014 | 23 days |
| 2015 | 25 days |
| 2016 | 28 days |
| 2017 | 25 days |
| 2018 | 52 days |
| 2019 | 27 days |
| 2020 | 28 days |
| 2021 | 30 days |
| 2022 | 39 days |
| 2023 | 22 days |
| 2024 | 28 days |
| 2025 | 48 days |
| 2026 | 29 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
50 years with a frostAcross 50 years with a frost, the median last spring frost at Idaho Falls 16 SE falls on 15 June and the median first autumn frost on 4 September, which leaves a median of 81 days between them.
Fitted over all years, the growing season changes by +8.8 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1987 to 2023) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 15 June | n/a | 16 June | n/a | -1.5 days per decade |
| First autumn frost | 4 September | n/a | 9 September | n/a | +7.3 days per decade |
| Growing days | 81 days | n/a | 86 days | n/a | +8.8 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
68 years, 1956 to 2025A day with at least 24.0 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 63.6 mm (2.5 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 24.0 mm (0.9 in) | |
| 5 years | 32.3 mm (1.3 in) | |
| 10 years | 38.6 mm (1.5 in) | |
| 25 years | 47.7 mm (1.9 in) | |
| 50 years | 55.3 mm (2.2 in) | |
| 100 years | 63.6 mm (2.5 in) | Longer than the 68 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, 68 years of values from 1956 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: 55.6 mm (2.2 in) in 1993; 53.3 mm (2.1 in) in 1986; 50.8 mm (2.0 in) in 1998.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Idaho Falls 16 SE, at 2016. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2016 ran 0.3 C (0.6 F) lower than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2016 | -0.3 | -0.6 | 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
2007 to 2023 against 1961 to 1990Over 2007 to 2023, Idaho Falls 16 SE had a mean temperature of 6.0 C (42.8 F) and 463.7 mm (18.3 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Sonnette 7 SW (United States, 516 km away), Lewistown AP (United States, 451 km away) and Little Hills (United States, 476 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Sonnette 7 SW | United States | 516 km (321 mi) | 6.3 C (43.3 F) | 389.4 mm (15.3 in) | 0.79 |
| Lewistown AP | United States | 451 km (280 mi) | 5.8 C (42.4 F) | 461.4 mm (18.2 in) | 0.83 |
| Little Hills | United States | 476 km (296 mi) | 5.8 C (42.4 F) | 362.5 mm (14.3 in) | 0.83 |
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).