Roberts 1 W Weather Records (USC00247128)
Record envelope, standing records and threshold days for Roberts 1 W (USC00247128), Montana, United States, with 76 years of record.
Key Facts for Roberts 1 W
- Roberts 1 W (USC00247128) is a weather station in Montana, United States at 45.38 latitude and -109.17 longitude, 1,381 m (4,530 ft) above sea level.
- The station reports from 1951 to 2026, 76 years of record.
- 0 records set at Roberts 1 W still stand.
- Records are tracked for prcp: an element needs 30 years of data to be eligible.
- Roberts 1 W set a daily record precipitation of 6.6 mm (0.26 in) on 18 July 2026.
About the Station
- Location: Montana, United States, 45.38 latitude, -109.17 longitude.
- Elevation: 1,381 m (4,530 ft).
- Period of record: 1951 to 2026, 76 years.
- Eligible elements: prcp.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | n/a | n/a | n/a | n/a |
| Feb | n/a | n/a | n/a | n/a |
| Mar | n/a | n/a | n/a | n/a |
| Apr | n/a | n/a | n/a | n/a |
| May | n/a | n/a | n/a | n/a |
| Jun | n/a | n/a | n/a | n/a |
| Jul | n/a | n/a | n/a | n/a |
| Aug | n/a | n/a | n/a | n/a |
| Sep | n/a | n/a | n/a | n/a |
| Oct | n/a | n/a | n/a | n/a |
| Nov | n/a | n/a | n/a | n/a |
| Dec | n/a | n/a | n/a | n/a |
Which Years Hold Standing Records
0 standing records| Year set | Standing records |
|---|
Wettest Day of Each Month
Oct: 94.0 mm (3.7 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 34.3 mm (1.4 in) | 14 January 1967 |
| Feb | 30.0 mm (1.2 in) | 28 February 2004 |
| Mar | 31.5 mm (1.2 in) | 24 March 1954 |
| Apr | 54.1 mm (2.1 in) | 28 April 2025 |
| May | 86.4 mm (3.4 in) | 17 May 2000 |
| Jun | 85.9 mm (3.4 in) | 13 June 2001 |
| Jul | 35.8 mm (1.4 in) | 11 July 1987 |
| Aug | 49.8 mm (2.0 in) | 16 August 1997 |
| Sep | 61.0 mm (2.4 in) | 18 September 1978 |
| Oct | 94.0 mm (3.7 in) | 31 October 1974 |
| Nov | 41.1 mm (1.6 in) | 27 November 1972 |
| Dec | 16.8 mm (0.7 in) | 10 December 1975 |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 18 July 2026 | Roberts 1 W, US | daily rain | 6.6 mm (0.26 in) | 2.3 mm (0.09 in) | 40 years | 20 of 100 (Routine) |
| 4 October 2025 | Roberts 1 W, US | daily rain | 19.6 mm (0.8 in) | 0.3 mm (0.01 in) | 20 years | 13 of 100 (Routine) |
| 30 July 2025 | Roberts 1 W, US | daily rain | 8.6 mm (0.34 in) | 1.5 mm (0.06 in) | 51 years | 20 of 100 (Routine) |
| 16 July 2025 | Roberts 1 W, US | daily rain | 15.5 mm (0.6 in) | 4.1 mm (0.16 in) | 71 years | 20 of 100 (Routine) |
| 14 May 2025 | Roberts 1 W, US | daily rain | 13.5 mm (0.5 in) | 6.6 mm (0.26 in) | 4 years | 14 of 100 (Routine) |
| 5 May 2025 | Roberts 1 W, US | daily rain | 16.5 mm (0.6 in) | 3.0 mm (0.12 in) | 47 years | 20 of 100 (Routine) |
| 28 April 2025 | Roberts 1 W, US | monthly rain | 54.1 mm (2.1 in) | 5.8 mm (0.23 in) | 61 years | 43 of 100 (Notable) |
| 17 April 2025 | Roberts 1 W, US | daily rain | 21.1 mm (0.8 in) | 3.8 mm (0.15 in) | 19 years | 17 of 100 (Routine) |
| 6 March 2025 | Roberts 1 W, US | daily rain (Tie) | 6.4 mm (0.25 in) | tie | 51 years | 5 of 100 (Routine) |
| 3 February 2025 | Roberts 1 W, US | daily rain | 10.4 mm (0.4 in) | 1.3 mm (0.05 in) | 25 years | 18 of 100 (Routine) |
| 3 January 2025 | Roberts 1 W, US | daily rain | 4.3 mm (0.17 in) | 0.5 mm (0.02 in) | 48 years | 20 of 100 (Routine) |
| 13 March 2024 | Roberts 1 W, US | daily rain | 11.4 mm (0.4 in) | 1.2 mm (0.05 in) | 67 years | 20 of 100 (Routine) |
| 27 February 2024 | Roberts 1 W, US | daily rain | 9.4 mm (0.37 in) | 4.8 mm (0.19 in) | 42 years | 20 of 100 (Routine) |
| 3 February 2024 | Roberts 1 W, US | daily rain (Tie) | 9.1 mm (0.36 in) | tie | 24 years | 3 of 100 (Routine) |
| 12 October 2023 | Roberts 1 W, US | daily rain | 53.8 mm (2.1 in) | 39.8 mm (1.6 in) | 1 year | 47 of 100 (Notable) |
| 3 August 2023 | Roberts 1 W, US | daily rain | 8.4 mm (0.33 in) | 1.0 mm (0.04 in) | 37 years | 19 of 100 (Routine) |
| 29 July 2023 | Roberts 1 W, US | daily rain | 9.9 mm (0.39 in) | 1.8 mm (0.07 in) | 37 years | 20 of 100 (Routine) |
| 28 July 2023 | Roberts 1 W, US | daily rain | 9.4 mm (0.37 in) | 1.8 mm (0.07 in) | 12 years | 13 of 100 (Routine) |
| 23 June 2023 | Roberts 1 W, US | daily rain | 10.7 mm (0.4 in) | 2.8 mm (0.11 in) | 4 years | 11 of 100 (Routine) |
| 8 June 2023 | Roberts 1 W, US | daily rain | 69.6 mm (2.7 in) | 23.4 mm (0.9 in) | 48 years | 47 of 100 (Notable) |
Extremes by Year
1951 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Wettest day (Rx1day) | 94.0 mm (3.7 in) | 1974 | 37.6 mm (1.5 in) | 76 |
| Wettest five days (Rx5day) | 113.5 mm (4.5 in) | 1975 | 52.4 mm (2.1 in) | 76 |
| Longest dry spell (CDD) | 73 days | 1976 | 31 days | 76 |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1951 | 17.0 mm (0.7 in) |
| 1952 | 48.3 mm (1.9 in) |
| 1953 | 34.3 mm (1.4 in) |
| 1954 | 31.5 mm (1.2 in) |
| 1955 | 43.2 mm (1.7 in) |
| 1956 | 40.1 mm (1.6 in) |
| 1957 | 39.4 mm (1.6 in) |
| 1958 | 22.6 mm (0.9 in) |
| 1959 | 21.6 mm (0.9 in) |
| 1960 | 32.3 mm (1.3 in) |
| 1961 | 33.5 mm (1.3 in) |
| 1962 | 67.3 mm (2.6 in) |
| 1963 | 47.8 mm (1.9 in) |
| 1964 | 48.3 mm (1.9 in) |
| 1965 | 39.4 mm (1.6 in) |
| 1966 | 13.2 mm (0.5 in) |
| 1967 | 34.3 mm (1.4 in) |
| 1968 | 60.2 mm (2.4 in) |
| 1969 | 48.3 mm (1.9 in) |
| 1970 | 76.7 mm (3.0 in) |
| 1971 | 39.9 mm (1.6 in) |
| 1972 | 41.1 mm (1.6 in) |
| 1973 | 45.7 mm (1.8 in) |
| 1974 | 94.0 mm (3.7 in) |
| 1975 | 40.6 mm (1.6 in) |
| 1976 | 30.5 mm (1.2 in) |
| 1977 | 36.6 mm (1.4 in) |
| 1978 | 61.0 mm (2.4 in) |
| 1979 | 23.4 mm (0.9 in) |
| 1980 | 36.8 mm (1.4 in) |
| 1981 | 32.8 mm (1.3 in) |
| 1982 | 39.4 mm (1.6 in) |
| 1983 | 36.8 mm (1.4 in) |
| 1984 | 18.5 mm (0.7 in) |
| 1985 | 16.8 mm (0.7 in) |
| 1986 | 31.2 mm (1.2 in) |
| 1987 | 58.4 mm (2.3 in) |
| 1988 | 81.3 mm (3.2 in) |
| 1989 | 28.2 mm (1.1 in) |
| 1990 | 22.4 mm (0.9 in) |
| 1991 | 19.8 mm (0.8 in) |
| 1992 | 48.8 mm (1.9 in) |
| 1993 | 36.8 mm (1.4 in) |
| 1994 | 33.5 mm (1.3 in) |
| 1995 | 28.2 mm (1.1 in) |
| 1996 | 37.6 mm (1.5 in) |
| 1997 | 49.8 mm (2.0 in) |
| 1998 | 37.6 mm (1.5 in) |
| 1999 | 39.4 mm (1.6 in) |
| 2000 | 86.4 mm (3.4 in) |
| 2001 | 85.9 mm (3.4 in) |
| 2002 | 38.4 mm (1.5 in) |
| 2003 | 20.1 mm (0.8 in) |
| 2004 | 30.0 mm (1.2 in) |
| 2005 | 34.3 mm (1.4 in) |
| 2006 | 27.4 mm (1.1 in) |
| 2007 | 47.8 mm (1.9 in) |
| 2008 | 40.9 mm (1.6 in) |
| 2009 | 31.5 mm (1.2 in) |
| 2010 | 20.3 mm (0.8 in) |
| 2011 | 64.0 mm (2.5 in) |
| 2012 | 14.7 mm (0.6 in) |
| 2013 | 41.9 mm (1.6 in) |
| 2014 | 45.7 mm (1.8 in) |
| 2015 | 32.3 mm (1.3 in) |
| 2016 | 31.2 mm (1.2 in) |
| 2017 | 48.8 mm (1.9 in) |
| 2018 | 47.0 mm (1.9 in) |
| 2019 | 42.4 mm (1.7 in) |
| 2020 | 36.6 mm (1.4 in) |
| 2021 | 15.7 mm (0.6 in) |
| 2022 | 51.6 mm (2.0 in) |
| 2023 | 69.6 mm (2.7 in) |
| 2024 | 26.7 mm (1.1 in) |
| 2025 | 54.1 mm (2.1 in) |
| 2026 | 24.6 mm (1.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1951 | 37.0 mm (1.5 in) |
| 1952 | 92.2 mm (3.6 in) |
| 1953 | 76.2 mm (3.0 in) |
| 1954 | 50.8 mm (2.0 in) |
| 1955 | 63.6 mm (2.5 in) |
| 1956 | 46.5 mm (1.8 in) |
| 1957 | 83.8 mm (3.3 in) |
| 1958 | 42.7 mm (1.7 in) |
| 1959 | 39.4 mm (1.6 in) |
| 1960 | 41.4 mm (1.6 in) |
| 1961 | 73.9 mm (2.9 in) |
| 1962 | 75.2 mm (3.0 in) |
| 1963 | 66.8 mm (2.6 in) |
| 1964 | 85.6 mm (3.4 in) |
| 1965 | 80.1 mm (3.2 in) |
| 1966 | 30.5 mm (1.2 in) |
| 1967 | 34.8 mm (1.4 in) |
| 1968 | 87.7 mm (3.5 in) |
| 1969 | 87.9 mm (3.5 in) |
| 1970 | 98.3 mm (3.9 in) |
| 1971 | 61.0 mm (2.4 in) |
| 1972 | 41.1 mm (1.6 in) |
| 1973 | 55.9 mm (2.2 in) |
| 1974 | 102.1 mm (4.0 in) |
| 1975 | 113.5 mm (4.5 in) |
| 1976 | 49.8 mm (2.0 in) |
| 1977 | 56.9 mm (2.2 in) |
| 1978 | 112.3 mm (4.4 in) |
| 1979 | 34.5 mm (1.4 in) |
| 1980 | 43.4 mm (1.7 in) |
| 1981 | 52.9 mm (2.1 in) |
| 1982 | 57.3 mm (2.3 in) |
| 1983 | 40.1 mm (1.6 in) |
| 1984 | 39.6 mm (1.6 in) |
| 1985 | 32.3 mm (1.3 in) |
| 1986 | 49.5 mm (1.9 in) |
| 1987 | 104.9 mm (4.1 in) |
| 1988 | 99.6 mm (3.9 in) |
| 1989 | 41.9 mm (1.6 in) |
| 1990 | 43.4 mm (1.7 in) |
| 1991 | 51.9 mm (2.0 in) |
| 1992 | 92.8 mm (3.7 in) |
| 1993 | 55.3 mm (2.2 in) |
| 1994 | 51.8 mm (2.0 in) |
| 1995 | 57.9 mm (2.3 in) |
| 1996 | 80.2 mm (3.2 in) |
| 1997 | 55.9 mm (2.2 in) |
| 1998 | 49.5 mm (1.9 in) |
| 1999 | 43.3 mm (1.7 in) |
| 2000 | 87.9 mm (3.5 in) |
| 2001 | 109.3 mm (4.3 in) |
| 2002 | 45.5 mm (1.8 in) |
| 2003 | 45.5 mm (1.8 in) |
| 2004 | 40.2 mm (1.6 in) |
| 2005 | 85.6 mm (3.4 in) |
| 2006 | 50.5 mm (2.0 in) |
| 2007 | 74.0 mm (2.9 in) |
| 2008 | 96.5 mm (3.8 in) |
| 2009 | 43.9 mm (1.7 in) |
| 2010 | 35.6 mm (1.4 in) |
| 2011 | 99.0 mm (3.9 in) |
| 2012 | 41.7 mm (1.6 in) |
| 2013 | 50.4 mm (2.0 in) |
| 2014 | 45.7 mm (1.8 in) |
| 2015 | 37.0 mm (1.5 in) |
| 2016 | 34.7 mm (1.4 in) |
| 2017 | 59.7 mm (2.4 in) |
| 2018 | 60.7 mm (2.4 in) |
| 2019 | 43.2 mm (1.7 in) |
| 2020 | 42.7 mm (1.7 in) |
| 2021 | 32.1 mm (1.3 in) |
| 2022 | 63.0 mm (2.5 in) |
| 2023 | 81.8 mm (3.2 in) |
| 2024 | 33.0 mm (1.3 in) |
| 2025 | 57.9 mm (2.3 in) |
| 2026 | 24.6 mm (1.0 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1951 | 18 days |
| 1952 | 33 days |
| 1953 | 33 days |
| 1954 | 39 days |
| 1955 | 31 days |
| 1956 | 33 days |
| 1957 | 31 days |
| 1958 | 31 days |
| 1959 | 29 days |
| 1960 | 27 days |
| 1961 | 28 days |
| 1962 | 22 days |
| 1963 | 36 days |
| 1964 | 29 days |
| 1965 | 22 days |
| 1966 | 20 days |
| 1967 | 30 days |
| 1968 | 26 days |
| 1969 | 46 days |
| 1970 | 30 days |
| 1971 | 37 days |
| 1972 | 29 days |
| 1973 | 39 days |
| 1974 | 44 days |
| 1975 | 28 days |
| 1976 | 73 days |
| 1977 | 45 days |
| 1978 | 28 days |
| 1979 | 40 days |
| 1980 | 30 days |
| 1981 | 31 days |
| 1982 | 28 days |
| 1983 | 26 days |
| 1984 | 24 days |
| 1985 | 33 days |
| 1986 | 26 days |
| 1987 | 28 days |
| 1988 | 55 days |
| 1989 | 15 days |
| 1990 | 34 days |
| 1991 | 29 days |
| 1992 | 49 days |
| 1993 | 32 days |
| 1994 | 26 days |
| 1995 | 18 days |
| 1996 | 66 days |
| 1997 | 21 days |
| 1998 | 34 days |
| 1999 | 52 days |
| 2000 | 39 days |
| 2001 | 36 days |
| 2002 | 27 days |
| 2003 | 31 days |
| 2004 | 58 days |
| 2005 | 36 days |
| 2006 | 32 days |
| 2007 | 42 days |
| 2008 | 34 days |
| 2009 | 28 days |
| 2010 | 39 days |
| 2011 | 19 days |
| 2012 | 46 days |
| 2013 | 43 days |
| 2014 | 28 days |
| 2015 | 19 days |
| 2016 | 65 days |
| 2017 | 30 days |
| 2018 | 34 days |
| 2019 | 23 days |
| 2020 | 38 days |
| 2021 | 31 days |
| 2022 | 24 days |
| 2023 | 37 days |
| 2024 | 35 days |
| 2025 | 27 days |
| 2026 | 22 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.
Rainfall Return Levels
72 years, 1952 to 2025A day with at least 38.0 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 97.6 mm (3.8 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 38.0 mm (1.5 in) | |
| 5 years | 53.1 mm (2.1 in) | |
| 10 years | 63.4 mm (2.5 in) | |
| 25 years | 76.8 mm (3.0 in) | |
| 50 years | 87.1 mm (3.4 in) | |
| 100 years | 97.6 mm (3.8 in) | Longer than the 72 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, 72 years of values from 1952 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: 94.0 mm (3.7 in) in 1974; 86.4 mm (3.4 in) in 2000; 85.9 mm (3.4 in) in 2001.
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 (2026-10-12).