Knobs 4 SW Weather Records (USC00244715)

Record envelope, standing records and threshold days for Knobs 4 SW (USC00244715), Montana, United States, with 76 years of record.

Key Facts for Knobs 4 SW

Knobs 4 SW (USC00244715) is a weather station in Montana, United States at 45.87 latitude and -104.16 longitude, 941 m (3,086 ft) above sea level.
The station reports from 1951 to 2026, 76 years of record.
2 records set at Knobs 4 SW still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Knobs 4 SW set a daily record precipitation of 11.9 mm (0.5 in) on 31 July 2026.

About the Station

Location: Montana, United States, 45.87 latitude, -104.16 longitude.
Elevation: 941 m (3,086 ft).
Period of record: 1951 to 2026, 76 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Knobs 4 SW. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Knobs 4 SW, with 2026 drawn through them
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	6.7 C (44.1 F)	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

2 standing records

2 records at Knobs 4 SW still stand. 1955 holds the most, with 2.

All-Time Record Progression

5 new records

5 all-time records were set at Knobs 4 SW between 6 October 1994 and 31 March 2009. Each dot is a new record.

When Knobs 4 SW set new all-time records
Date	Kind	Detail
1994-10-06	Record daily precipitation	Record daily precipitation 68.6 mm (2.7 in)
1998-03-01	Record snow depth	Record snow depth 38.1 cm (15.0 in)
1998-03-02	Record snow depth	Record snow depth 40.6 cm (16.0 in)
2008-05-02	Record daily precipitation	Record daily precipitation 96.8 mm (3.8 in)
2009-03-31	Record snow depth	Record snow depth 55.9 cm (22.0 in)

Wettest Day of Each Month

May: 96.8 mm (3.8 in)

The wettest day on record for each calendar month at Knobs 4 SW. The most was 96.8 mm (3.8 in) on 2 May 2008.

Record daily precipitation for each month at Knobs 4 SW
Month	Record daily precipitation (mm)	Date
Jan	26.2 mm (1.0 in)	3 January 1997
Feb	21.1 mm (0.8 in)	26 February 1998
Mar	71.1 mm (2.8 in)	24 March 2009
Apr	37.3 mm (1.5 in)	7 April 2006
May	96.8 mm (3.8 in)	2 May 2008
Jun	58.4 mm (2.3 in)	27 June 1955
Jul	53.8 mm (2.1 in)	3 July 1962
Aug	68.6 mm (2.7 in)	23 August 2014
Sep	72.6 mm (2.9 in)	8 September 2013
Oct	68.6 mm (2.7 in)	6 October 1994
Nov	60.7 mm (2.4 in)	1 November 2000
Dec	14.2 mm (0.6 in)	26 December 2016

Latest Records

Latest records at Knobs 4 SW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 July 2026	Knobs 4 SW, US	daily rain	11.9 mm (0.5 in)	2.2 mm (0.09 in)	5 years	10 of 100 (Routine)
31 May 2026	Knobs 4 SW, US	daily rain	26.7 mm (1.1 in)	7.4 mm (0.29 in)	3 years	15 of 100 (Routine)
14 April 2026	Knobs 4 SW, US	daily rain	21.3 mm (0.8 in)	3.5 mm (0.14 in)	32 years	20 of 100 (Routine)
4 April 2026	Knobs 4 SW, US	daily rain	8.9 mm (0.35 in)	2.3 mm (0.09 in)	16 years	15 of 100 (Routine)
27 March 2026	Knobs 4 SW, US	daily snowfall (Tie)	2.5 cm (1.0 in)	tie	68 years	6 of 100 (Routine)
26 March 2026	Knobs 4 SW, US	daily snowfall (Tie)	2.5 cm (1.0 in)	tie	15 years	2 of 100 (Routine)
15 March 2026	Knobs 4 SW, US	daily snowfall	6.4 cm (2.5 in)	6.4 cm (2.5 in)	73 years	40 of 100 (Notable)
14 March 2026	Knobs 4 SW, US	daily snowfall	3.8 cm (1.5 in)	3.8 cm (1.5 in)	73 years	20 of 100 (Routine)
13 December 2025	Knobs 4 SW, US	daily snowfall	6.4 cm (2.5 in)	5.1 cm (2.0 in)	32 years	32 of 100 (Routine)
12 December 2025	Knobs 4 SW, US	daily rain	6.1 mm (0.24 in)	1.3 mm (0.05 in)	58 years	20 of 100 (Routine)
12 December 2025	Knobs 4 SW, US	daily snowfall	2.5 cm (1.0 in)	1.2 cm (0.5 in)	0 years	10 of 100 (Routine)
3 December 2025	Knobs 4 SW, US	daily snowfall (Tie)	2.5 cm (1.0 in)	tie	20 years	3 of 100 (Routine)
29 November 2025	Knobs 4 SW, US	daily snowfall	5.1 cm (2.0 in)	2.6 cm (1.0 in)	68 years	32 of 100 (Routine)
25 November 2025	Knobs 4 SW, US	daily rain (Tie)	3.6 mm (0.14 in)	tie	44 years	5 of 100 (Routine)
27 October 2025	Knobs 4 SW, US	daily rain	13.0 mm (0.5 in)	4.4 mm (0.17 in)	2 years	12 of 100 (Routine)
17 October 2025	Knobs 4 SW, US	daily rain	28.7 mm (1.1 in)	11.4 mm (0.4 in)	31 years	29 of 100 (Routine)
28 August 2025	Knobs 4 SW, US	daily rain	10.9 mm (0.4 in)	1.2 mm (0.05 in)	7 years	10 of 100 (Routine)
1 August 2025	Knobs 4 SW, US	daily rain	11.4 mm (0.4 in)	1.2 mm (0.05 in)	64 years	20 of 100 (Routine)
20 July 2025	Knobs 4 SW, US	daily rain	26.9 mm (1.1 in)	20.0 mm (0.8 in)	51 years	47 of 100 (Notable)
4 July 2025	Knobs 4 SW, US	daily rain (Tie)	18.3 mm (0.7 in)	tie	51 years	5 of 100 (Routine)

Extremes by Year

1951 to 2026

Yearly extremes at Knobs 4 SW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Coldest night (TNn)	6.7 C (44.1 F)	1955	6.7 C (44.1 F)	1
Wettest day (Rx1day)	96.8 mm (3.8 in)	2008	36.1 mm (1.4 in)	76
Wettest five days (Rx5day)	129.3 mm (5.1 in)	2000	54.4 mm (2.1 in)	76
Longest dry spell (CDD)	116 days	1981	34 days	76

Coldest night (TNn)

The coldest night of the year at Knobs 4 SW, 1951 to 2026. The record is 6.7 C (44.1 F) in 1955, marked on the chart; the median year is 6.7 C (44.1 F).

Coldest night (TNn) at Knobs 4 SW by year
Year	Coldest night (TNn)
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	6.7 C (44.1 F)
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Wettest day (Rx1day)

The wettest day of the year at Knobs 4 SW, 1951 to 2026. The record is 96.8 mm (3.8 in) in 2008, marked on the chart; the median year is 36.1 mm (1.4 in).

Wettest day (Rx1day) at Knobs 4 SW by year
Year	Wettest day (Rx1day)
1951	15.2 mm (0.6 in)
1952	21.3 mm (0.8 in)
1953	43.9 mm (1.7 in)
1954	30.0 mm (1.2 in)
1955	58.4 mm (2.3 in)
1956	32.0 mm (1.3 in)
1957	33.3 mm (1.3 in)
1958	22.9 mm (0.9 in)
1959	36.6 mm (1.4 in)
1960	33.0 mm (1.3 in)
1961	16.5 mm (0.6 in)
1962	53.8 mm (2.1 in)
1963	45.2 mm (1.8 in)
1964	41.4 mm (1.6 in)
1965	21.8 mm (0.9 in)
1966	43.2 mm (1.7 in)
1967	35.6 mm (1.4 in)
1968	14.5 mm (0.6 in)
1969	24.9 mm (1.0 in)
1970	20.1 mm (0.8 in)
1971	66.8 mm (2.6 in)
1972	50.3 mm (2.0 in)
1973	29.7 mm (1.2 in)
1974	27.4 mm (1.1 in)
1975	39.6 mm (1.6 in)
1976	29.0 mm (1.1 in)
1977	35.6 mm (1.4 in)
1978	30.0 mm (1.2 in)
1979	24.4 mm (1.0 in)
1980	38.1 mm (1.5 in)
1981	32.8 mm (1.3 in)
1982	51.6 mm (2.0 in)
1983	34.0 mm (1.3 in)
1984	42.9 mm (1.7 in)
1985	15.0 mm (0.6 in)
1986	35.6 mm (1.4 in)
1987	32.0 mm (1.3 in)
1988	29.0 mm (1.1 in)
1989	47.0 mm (1.9 in)
1990	55.9 mm (2.2 in)
1991	40.9 mm (1.6 in)
1992	23.1 mm (0.9 in)
1993	49.5 mm (1.9 in)
1994	68.6 mm (2.7 in)
1995	54.9 mm (2.2 in)
1996	22.9 mm (0.9 in)
1997	52.6 mm (2.1 in)
1998	56.4 mm (2.2 in)
1999	59.2 mm (2.3 in)
2000	60.7 mm (2.4 in)
2001	36.1 mm (1.4 in)
2002	17.5 mm (0.7 in)
2003	33.0 mm (1.3 in)
2004	40.9 mm (1.6 in)
2005	50.0 mm (2.0 in)
2006	37.6 mm (1.5 in)
2007	46.2 mm (1.8 in)
2008	96.8 mm (3.8 in)
2009	71.1 mm (2.8 in)
2010	29.5 mm (1.2 in)
2011	50.5 mm (2.0 in)
2012	32.0 mm (1.3 in)
2013	72.6 mm (2.9 in)
2014	68.6 mm (2.7 in)
2015	36.1 mm (1.4 in)
2016	37.3 mm (1.5 in)
2017	36.1 mm (1.4 in)
2018	24.6 mm (1.0 in)
2019	37.6 mm (1.5 in)
2020	16.3 mm (0.6 in)
2021	34.8 mm (1.4 in)
2022	38.1 mm (1.5 in)
2023	30.0 mm (1.2 in)
2024	38.6 mm (1.5 in)
2025	28.7 mm (1.1 in)
2026	26.7 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Knobs 4 SW, 1951 to 2026. The record is 129.3 mm (5.1 in) in 2000, marked on the chart; the median year is 54.4 mm (2.1 in).

Wettest five days (Rx5day) at Knobs 4 SW by year
Year	Wettest five days (Rx5day)
1951	17.5 mm (0.7 in)
1952	42.8 mm (1.7 in)
1953	85.3 mm (3.4 in)
1954	38.9 mm (1.5 in)
1955	72.1 mm (2.8 in)
1956	45.0 mm (1.8 in)
1957	44.8 mm (1.8 in)
1958	40.7 mm (1.6 in)
1959	58.3 mm (2.3 in)
1960	40.6 mm (1.6 in)
1961	37.4 mm (1.5 in)
1962	80.8 mm (3.2 in)
1963	56.0 mm (2.2 in)
1964	65.8 mm (2.6 in)
1965	45.9 mm (1.8 in)
1966	54.1 mm (2.1 in)
1967	71.2 mm (2.8 in)
1968	31.9 mm (1.3 in)
1969	64.0 mm (2.5 in)
1970	35.8 mm (1.4 in)
1971	92.7 mm (3.6 in)
1972	95.7 mm (3.8 in)
1973	50.7 mm (2.0 in)
1974	32.3 mm (1.3 in)
1975	78.5 mm (3.1 in)
1976	54.2 mm (2.1 in)
1977	70.4 mm (2.8 in)
1978	52.4 mm (2.1 in)
1979	36.8 mm (1.4 in)
1980	39.4 mm (1.6 in)
1981	39.4 mm (1.6 in)
1982	73.4 mm (2.9 in)
1983	51.6 mm (2.0 in)
1984	60.7 mm (2.4 in)
1985	27.4 mm (1.1 in)
1986	48.6 mm (1.9 in)
1987	40.9 mm (1.6 in)
1988	40.6 mm (1.6 in)
1989	62.6 mm (2.5 in)
1990	97.8 mm (3.9 in)
1991	52.8 mm (2.1 in)
1992	39.2 mm (1.5 in)
1993	77.7 mm (3.1 in)
1994	56.9 mm (2.2 in)
1995	97.6 mm (3.8 in)
1996	63.6 mm (2.5 in)
1997	81.3 mm (3.2 in)
1998	62.0 mm (2.4 in)
1999	78.7 mm (3.1 in)
2000	129.3 mm (5.1 in)
2001	62.3 mm (2.5 in)
2002	33.3 mm (1.3 in)
2003	45.0 mm (1.8 in)
2004	57.9 mm (2.3 in)
2005	75.8 mm (3.0 in)
2006	75.0 mm (3.0 in)
2007	47.0 mm (1.9 in)
2008	126.5 mm (5.0 in)
2009	71.1 mm (2.8 in)
2010	73.2 mm (2.9 in)
2011	118.8 mm (4.7 in)
2012	36.8 mm (1.4 in)
2013	88.6 mm (3.5 in)
2014	117.1 mm (4.6 in)
2015	55.5 mm (2.2 in)
2016	46.2 mm (1.8 in)
2017	54.3 mm (2.1 in)
2018	29.4 mm (1.2 in)
2019	74.5 mm (2.9 in)
2020	35.6 mm (1.4 in)
2021	52.0 mm (2.0 in)
2022	54.4 mm (2.1 in)
2023	59.0 mm (2.3 in)
2024	51.8 mm (2.0 in)
2025	47.0 mm (1.9 in)
2026	43.5 mm (1.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Knobs 4 SW, 1951 to 2026. The record is 116 days in 1981, marked on the chart; the median year is 34 days.

Longest dry spell (CDD) at Knobs 4 SW by year
Year	Longest dry spell (CDD)
1951	35 days
1952	47 days
1953	33 days
1954	32 days
1955	27 days
1956	44 days
1957	39 days
1958	26 days
1959	37 days
1960	103 days
1961	33 days
1962	30 days
1963	31 days
1964	33 days
1965	43 days
1966	28 days
1967	56 days
1968	24 days
1969	36 days
1970	28 days
1971	48 days
1972	31 days
1973	26 days
1974	35 days
1975	31 days
1976	35 days
1977	28 days
1978	27 days
1979	71 days
1980	60 days
1981	116 days
1982	19 days
1983	54 days
1984	45 days
1985	44 days
1986	32 days
1987	47 days
1988	29 days
1989	36 days
1990	33 days
1991	31 days
1992	49 days
1993	31 days
1994	42 days
1995	39 days
1996	35 days
1997	36 days
1998	49 days
1999	35 days
2000	28 days
2001	40 days
2002	54 days
2003	22 days
2004	27 days
2005	29 days
2006	33 days
2007	30 days
2008	37 days
2009	39 days
2010	31 days
2011	37 days
2012	45 days
2013	50 days
2014	23 days
2015	23 days
2016	30 days
2017	25 days
2018	23 days
2019	21 days
2020	52 days
2021	49 days
2022	40 days
2023	65 days
2024	28 days
2025	23 days
2026	31 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, 1954 to 2025

A day with at least 36.8 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 89.1 mm (3.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Knobs 4 SW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	36.8 mm (1.4 in)
5 years	50.8 mm (2.0 in)
10 years	60.1 mm (2.4 in)
25 years	71.8 mm (2.8 in)
50 years	80.5 mm (3.2 in)
100 years	89.1 mm (3.5 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 1954 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: 96.8 mm (3.8 in) in 2008; 72.6 mm (2.9 in) in 2013; 71.1 mm (2.8 in) in 2009.

Download the Data

Data for Knobs 4 SW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Knobs 4 SW threshold days by year: CSV or JSON. Field meanings are on the data page.

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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).