Ft Sumner 5 S Weather Records (USC00293296)

Record envelope, standing records and threshold days for Ft Sumner 5 S (USC00293296), New Mexico, United States, with 79 years of record.

Key Facts for Ft Sumner 5 S

Ft Sumner 5 S (USC00293296) is a weather station in New Mexico, United States at 34.39 latitude and -104.25 longitude, 1,234 m (4,050 ft) above sea level.
The station reports from 1948 to 2026, 79 years of record.
1,464 records set at Ft Sumner 5 S still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Ft Sumner 5 S set a daily record precipitation of 57.2 mm (2.3 in) on 23 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: New Mexico, United States, 34.39 latitude, -104.25 longitude.
Elevation: 1,234 m (4,050 ft).
Period of record: 1948 to 2026, 79 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

60 days at or beyond a record

The band shows the record high and record low for each calendar day at Ft Sumner 5 S. The lines show the 2026 daily maximum and minimum. 60 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Ft Sumner 5 S, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	26.1 C (79.0 F)	-25.0 C (-13.0 F)	21.7 C (71.1 F)	-20.0 C (-4.0 F)
Feb	30.0 C (86.0 F)	-27.8 C (-18.0 F)	29.4 C (84.9 F)	-12.2 C (10.0 F)
Mar	37.2 C (99.0 F)	-15.6 C (3.9 F)	37.2 C (99.0 F)	-7.8 C (18.0 F)
Apr	36.7 C (98.1 F)	-7.8 C (18.0 F)	32.2 C (90.0 F)	-4.4 C (24.1 F)
May	39.4 C (102.9 F)	-3.3 C (26.1 F)	36.1 C (97.0 F)	2.2 C (36.0 F)
Jun	42.8 C (109.0 F)	7.8 C (46.0 F)	41.7 C (107.1 F)	12.8 C (55.0 F)
Jul	43.3 C (109.9 F)	12.2 C (54.0 F)	40.6 C (105.1 F)	13.9 C (57.0 F)
Aug	42.2 C (108.0 F)	9.4 C (48.9 F)	40.6 C (105.1 F)	15.6 C (60.1 F)
Sep	40.0 C (104.0 F)	0.0 C (32.0 F)	39.4 C (102.9 F)	12.2 C (54.0 F)
Oct	35.0 C (95.0 F)	-15.0 C (5.0 F)	28.3 C (82.9 F)	8.3 C (46.9 F)
Nov	31.7 C (89.1 F)	-18.3 C (-0.9 F)	n/a	n/a
Dec	27.2 C (81.0 F)	-21.1 C (-6.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ft Sumner 5 S still stand. 2022 holds the most, with 105.

Standing records at Ft Sumner 5 S by the year they were set
Year set	Standing records
2004	4
2005	78
2006	98
2007	64
2008	72
2009	78
2010	47
2011	94
2012	75
2013	74
2014	91
2015	57
2016	50
2019	59
2020	80
2021	69
2022	105
2023	67
2024	59
2025	83
2026	60

All-Time Record Progression

4 new records

4 all-time records were set at Ft Sumner 5 S between 7 December 1978 and 17 January 1987. Each dot is a new record.

When Ft Sumner 5 S set new all-time records
Date	Kind	Detail
1978-12-07	Record daily snowfall	Record daily snowfall 25.4 cm (10.0 in)
1982-11-27	Record daily snowfall	Record daily snowfall 27.9 cm (11.0 in)
1987-01-17	Record daily snowfall	Record daily snowfall 30.5 cm (12.0 in)
1987-01-17	Record snow depth	Record snow depth 40.6 cm (16.0 in)

Wettest Day of Each Month

Sep: 184.9 mm (7.3 in)

The wettest day on record for each calendar month at Ft Sumner 5 S. The most was 184.9 mm (7.3 in) on 16 September 1970.

Record daily precipitation for each month at Ft Sumner 5 S
Month	Record daily precipitation (mm)	Date
Jan	25.4 mm (1.0 in)	4 January 1958
Feb	31.5 mm (1.2 in)	24 February 2004
Mar	43.7 mm (1.7 in)	6 March 1958
Apr	124.7 mm (4.9 in)	30 April 1999
May	57.4 mm (2.3 in)	22 May 1987
Jun	74.2 mm (2.9 in)	27 June 1978
Jul	83.6 mm (3.3 in)	31 July 2015
Aug	126.7 mm (5.0 in)	12 August 1991
Sep	184.9 mm (7.3 in)	16 September 1970
Oct	82.6 mm (3.3 in)	17 October 1960
Nov	32.5 mm (1.3 in)	25 November 1984
Dec	21.6 mm (0.9 in)	20 December 1997

Period of Record Coverage

2004 to 2026

21 years of record at Ft Sumner 5 S, 2004 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 2004, 2016, 2019, 2024, 2026.

Days with data per year at Ft Sumner 5 S
Year	Days with data	Share of year	Complete
2004	31	8%	No
2005	364	100%	Yes
2006	364	100%	Yes
2007	362	99%	Yes
2008	361	99%	Yes
2009	361	99%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	366	100%	Yes
2013	365	100%	Yes
2014	364	100%	Yes
2015	330	90%	Yes
2016	269	73%	No
2019	244	67%	No
2020	361	99%	Yes
2021	358	98%	Yes
2022	361	99%	Yes
2023	357	98%	Yes
2024	321	88%	No
2025	358	98%	Yes
2026	281	77%	No

Latest Records

Latest records at Ft Sumner 5 S
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 September 2026	Ft Sumner 5 S, US	daily rain (Provisional)	57.2 mm (2.3 in)	31.0 mm (1.2 in)	55 years	42 of 100 (Notable)
14 June 2026	Ft Sumner 5 S, US	daily rain	5.3 mm (0.21 in)	1.7 mm (0.07 in)	64 years	20 of 100 (Routine)
8 January 2026	Ft Sumner 5 S, US	daily rain	3.3 mm (0.13 in)	0.5 mm (0.02 in)	39 years	19 of 100 (Routine)
20 November 2025	Ft Sumner 5 S, US	daily rain	6.6 mm (0.26 in)	5.1 mm (0.20 in)	52 years	20 of 100 (Routine)
28 September 2025	Ft Sumner 5 S, US	daily rain	11.4 mm (0.4 in)	4.5 mm (0.18 in)	20 years	15 of 100 (Routine)
25 June 2025	Ft Sumner 5 S, US	daily rain	49.3 mm (1.9 in)	32.8 mm (1.3 in)	63 years	56 of 100 (Notable)
6 May 2025	Ft Sumner 5 S, US	daily rain	25.7 mm (1.0 in)	2.3 mm (0.09 in)	52 years	24 of 100 (Routine)
4 May 2025	Ft Sumner 5 S, US	daily rain	21.6 mm (0.9 in)	7.1 mm (0.28 in)	48 years	20 of 100 (Routine)
26 April 2025	Ft Sumner 5 S, US	daily rain	41.7 mm (1.6 in)	14.3 mm (0.6 in)	27 years	27 of 100 (Routine)
9 January 2025	Ft Sumner 5 S, US	daily rain	10.7 mm (0.4 in)	3.1 mm (0.12 in)	76 years	20 of 100 (Routine)
9 January 2025	Ft Sumner 5 S, US	daily snowfall	13.2 cm (5.2 in)	9.4 cm (3.7 in)	34 years	31 of 100 (Routine)
9 January 2025	Ft Sumner 5 S, US	daily snow depth	12.7 cm (5.0 in)	10.2 cm (4.0 in)	34 years	31 of 100 (Routine)
18 November 2024	Ft Sumner 5 S, US	daily rain	14.2 mm (0.6 in)	0.2 mm (0.01 in)	49 years	20 of 100 (Routine)
19 October 2024	Ft Sumner 5 S, US	daily rain	49.0 mm (1.9 in)	19.0 mm (0.7 in)	31 years	31 of 100 (Routine)
10 June 2024	Ft Sumner 5 S, US	daily rain	15.7 mm (0.6 in)	1.7 mm (0.07 in)	68 years	20 of 100 (Routine)
9 June 2024	Ft Sumner 5 S, US	daily rain	27.9 mm (1.1 in)	0.2 mm (0.01 in)	27 years	15 of 100 (Routine)
9 April 2024	Ft Sumner 5 S, US	daily rain	12.4 mm (0.5 in)	1.7 mm (0.07 in)	69 years	20 of 100 (Routine)
29 February 2024	Ft Sumner 5 S, US	daily snowfall	3.8 cm (1.5 in)	3.8 cm (1.5 in)	76 years	20 of 100 (Routine)
29 February 2024	Ft Sumner 5 S, US	daily snow depth	2.5 cm (1.0 in)	2.5 cm (1.0 in)	76 years	20 of 100 (Routine)
29 February 2024	Ft Sumner 5 S, US	daily rain	1.3 mm (0.05 in)	1.3 mm (0.05 in)	76 years	20 of 100 (Routine)

Climate Trend

15 complete years, 2005 to 2025

One stripe for each of 15 complete years at Ft Sumner 5 S, 2005 to 2025. Blue stripes are years cooler than the station's own mean of 15.2 C (59.3 F); red stripes are warmer. The coolest year was 2022, at 14.0 C (57.2 F), and the warmest was 2012, at 16.5 C (61.6 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Ft Sumner 5 S as warming stripes, 2005 to 2025
Year	Annual mean temperature	Difference from the station mean
2005	15.4 C	+0.25 C
2006	15.8 C	+0.60 C
2007	15.0 C	-0.19 C
2008	15.0 C	-0.18 C
2009	15.1 C	-0.06 C
2010	15.3 C	+0.10 C
2011	15.5 C	+0.39 C
2012	16.5 C	+1.31 C
2013	15.2 C	+0.09 C
2014	15.4 C	+0.27 C
2020	15.0 C	-0.18 C
2021	14.4 C	-0.77 C
2022	14.0 C	-1.17 C
2023	14.8 C	-0.32 C
2025	15.0 C	-0.13 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1948 to 2026

Yearly extremes at Ft Sumner 5 S: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.3 C (109.9 F)	2016	41.1 C (106.0 F)	21
Coldest night (TNn)	-27.8 C (-18.0 F)	2011	-16.7 C (1.9 F)	21
Wettest day (Rx1day)	184.9 mm (7.3 in)	1970	46.7 mm (1.8 in)	77
Wettest five days (Rx5day)	261.8 mm (10.3 in)	1991	66.2 mm (2.6 in)	77
Longest dry spell (CDD)	130 days	1996	55 days	77

Hottest day (TXx)

The hottest day of the year at Ft Sumner 5 S, 1948 to 2026. The record is 43.3 C (109.9 F) in 2016, marked on the chart; the median year is 41.1 C (106.0 F).

Hottest day (TXx) at Ft Sumner 5 S by year
Year	Hottest day (TXx)
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
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	25.0 C (77.0 F)
2005	40.6 C (105.1 F)
2006	41.1 C (106.0 F)
2007	42.2 C (108.0 F)
2008	40.6 C (105.1 F)
2009	40.0 C (104.0 F)
2010	40.6 C (105.1 F)
2011	42.2 C (108.0 F)
2012	41.1 C (106.0 F)
2013	42.2 C (108.0 F)
2014	41.1 C (106.0 F)
2015	39.4 C (102.9 F)
2016	43.3 C (109.9 F)
2019	39.4 C (102.9 F)
2020	42.8 C (109.0 F)
2021	41.7 C (107.1 F)
2022	42.8 C (109.0 F)
2023	42.8 C (109.0 F)
2024	40.6 C (105.1 F)
2025	40.6 C (105.1 F)
2026	41.7 C (107.1 F)

Coldest night (TNn)

The coldest night of the year at Ft Sumner 5 S, 1948 to 2026. The record is -27.8 C (-18.0 F) in 2011, marked on the chart; the median year is -16.7 C (1.9 F).

Coldest night (TNn) at Ft Sumner 5 S by year
Year	Coldest night (TNn)
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
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	-21.1 C (-6.0 F)
2005	-20.0 C (-4.0 F)
2006	-13.3 C (8.1 F)
2007	-16.7 C (1.9 F)
2008	-15.0 C (5.0 F)
2009	-16.7 C (1.9 F)
2010	-15.0 C (5.0 F)
2011	-27.8 C (-18.0 F)
2012	-14.4 C (6.1 F)
2013	-14.4 C (6.1 F)
2014	-18.3 C (-0.9 F)
2015	-17.8 C (0.0 F)
2016	-13.3 C (8.1 F)
2019	-15.0 C (5.0 F)
2020	-15.0 C (5.0 F)
2021	-18.3 C (-0.9 F)
2022	-25.0 C (-13.0 F)
2023	-15.0 C (5.0 F)
2024	-17.8 C (0.0 F)
2025	-18.3 C (-0.9 F)
2026	-20.0 C (-4.0 F)

Wettest day (Rx1day)

The wettest day of the year at Ft Sumner 5 S, 1948 to 2026. The record is 184.9 mm (7.3 in) in 1970, marked on the chart; the median year is 46.7 mm (1.8 in).

Wettest day (Rx1day) at Ft Sumner 5 S by year
Year	Wettest day (Rx1day)
1948	24.4 mm (1.0 in)
1949	43.2 mm (1.7 in)
1950	31.5 mm (1.2 in)
1951	19.3 mm (0.8 in)
1952	36.6 mm (1.4 in)
1953	72.1 mm (2.8 in)
1954	22.9 mm (0.9 in)
1955	20.3 mm (0.8 in)
1956	16.3 mm (0.6 in)
1957	27.7 mm (1.1 in)
1958	53.8 mm (2.1 in)
1959	73.7 mm (2.9 in)
1960	82.6 mm (3.3 in)
1961	46.7 mm (1.8 in)
1962	80.0 mm (3.1 in)
1963	57.2 mm (2.3 in)
1964	28.7 mm (1.1 in)
1965	40.9 mm (1.6 in)
1966	106.7 mm (4.2 in)
1967	84.6 mm (3.3 in)
1968	32.0 mm (1.3 in)
1969	64.8 mm (2.6 in)
1970	184.9 mm (7.3 in)
1971	46.7 mm (1.8 in)
1972	72.6 mm (2.9 in)
1973	41.1 mm (1.6 in)
1974	35.6 mm (1.4 in)
1975	27.4 mm (1.1 in)
1976	48.3 mm (1.9 in)
1977	38.9 mm (1.5 in)
1978	74.2 mm (2.9 in)
1979	34.5 mm (1.4 in)
1980	32.8 mm (1.3 in)
1981	49.0 mm (1.9 in)
1982	82.6 mm (3.3 in)
1983	27.4 mm (1.1 in)
1984	32.5 mm (1.3 in)
1985	40.1 mm (1.6 in)
1986	85.1 mm (3.4 in)
1987	57.4 mm (2.3 in)
1988	33.0 mm (1.3 in)
1989	40.9 mm (1.6 in)
1990	70.6 mm (2.8 in)
1991	126.7 mm (5.0 in)
1992	33.3 mm (1.3 in)
1993	31.5 mm (1.2 in)
1994	23.4 mm (0.9 in)
1995	56.4 mm (2.2 in)
1996	58.4 mm (2.3 in)
1997	68.6 mm (2.7 in)
1998	41.7 mm (1.6 in)
1999	124.7 mm (4.9 in)
2000	75.2 mm (3.0 in)
2001	33.5 mm (1.3 in)
2002	81.0 mm (3.2 in)
2003	36.1 mm (1.4 in)
2004	43.2 mm (1.7 in)
2005	76.7 mm (3.0 in)
2006	51.3 mm (2.0 in)
2007	23.9 mm (0.9 in)
2008	80.3 mm (3.2 in)
2009	30.2 mm (1.2 in)
2010	82.8 mm (3.3 in)
2011	51.1 mm (2.0 in)
2012	36.8 mm (1.4 in)
2013	93.0 mm (3.7 in)
2014	81.8 mm (3.2 in)
2015	83.6 mm (3.3 in)
2016	25.9 mm (1.0 in)
2019	53.6 mm (2.1 in)
2020	28.7 mm (1.1 in)
2021	36.3 mm (1.4 in)
2022	49.5 mm (1.9 in)
2023	41.9 mm (1.6 in)
2024	49.0 mm (1.9 in)
2025	49.3 mm (1.9 in)
2026	57.2 mm (2.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ft Sumner 5 S, 1948 to 2026. The record is 261.8 mm (10.3 in) in 1991, marked on the chart; the median year is 66.2 mm (2.6 in).

Wettest five days (Rx5day) at Ft Sumner 5 S by year
Year	Wettest five days (Rx5day)
1948	29.0 mm (1.1 in)
1949	61.7 mm (2.4 in)
1950	51.8 mm (2.0 in)
1951	32.0 mm (1.3 in)
1952	43.6 mm (1.7 in)
1953	111.5 mm (4.4 in)
1954	32.2 mm (1.3 in)
1955	42.7 mm (1.7 in)
1956	25.2 mm (1.0 in)
1957	27.7 mm (1.1 in)
1958	90.4 mm (3.6 in)
1959	80.3 mm (3.2 in)
1960	199.1 mm (7.8 in)
1961	64.7 mm (2.5 in)
1962	93.4 mm (3.7 in)
1963	76.5 mm (3.0 in)
1964	32.8 mm (1.3 in)
1965	47.8 mm (1.9 in)
1966	118.1 mm (4.6 in)
1967	101.4 mm (4.0 in)
1968	67.7 mm (2.7 in)
1969	101.4 mm (4.0 in)
1970	202.9 mm (8.0 in)
1971	46.7 mm (1.8 in)
1972	101.6 mm (4.0 in)
1973	53.6 mm (2.1 in)
1974	54.1 mm (2.1 in)
1975	37.3 mm (1.5 in)
1976	65.0 mm (2.6 in)
1977	45.7 mm (1.8 in)
1978	117.4 mm (4.6 in)
1979	47.7 mm (1.9 in)
1980	77.0 mm (3.0 in)
1981	61.5 mm (2.4 in)
1982	97.8 mm (3.9 in)
1983	51.1 mm (2.0 in)
1984	60.5 mm (2.4 in)
1985	59.9 mm (2.4 in)
1986	112.8 mm (4.4 in)
1987	67.6 mm (2.7 in)
1988	51.0 mm (2.0 in)
1989	52.9 mm (2.1 in)
1990	83.3 mm (3.3 in)
1991	261.8 mm (10.3 in)
1992	77.6 mm (3.1 in)
1993	53.5 mm (2.1 in)
1994	66.2 mm (2.6 in)
1995	71.6 mm (2.8 in)
1996	58.4 mm (2.3 in)
1997	90.9 mm (3.6 in)
1998	98.1 mm (3.9 in)
1999	166.4 mm (6.6 in)
2000	99.3 mm (3.9 in)
2001	38.9 mm (1.5 in)
2002	117.1 mm (4.6 in)
2003	59.7 mm (2.4 in)
2004	62.5 mm (2.5 in)
2005	78.0 mm (3.1 in)
2006	79.7 mm (3.1 in)
2007	37.9 mm (1.5 in)
2008	153.7 mm (6.1 in)
2009	63.5 mm (2.5 in)
2010	98.0 mm (3.9 in)
2011	56.4 mm (2.2 in)
2012	47.0 mm (1.9 in)
2013	123.9 mm (4.9 in)
2014	81.8 mm (3.2 in)
2015	98.4 mm (3.9 in)
2016	53.3 mm (2.1 in)
2019	70.9 mm (2.8 in)
2020	30.7 mm (1.2 in)
2021	77.0 mm (3.0 in)
2022	89.1 mm (3.5 in)
2023	77.0 mm (3.0 in)
2024	57.4 mm (2.3 in)
2025	54.1 mm (2.1 in)
2026	85.9 mm (3.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ft Sumner 5 S, 1948 to 2026. The record is 130 days in 1996, marked on the chart; the median year is 55 days.

Longest dry spell (CDD) at Ft Sumner 5 S by year
Year	Longest dry spell (CDD)
1948	60 days
1949	19 days
1950	88 days
1951	53 days
1952	73 days
1953	60 days
1954	84 days
1955	90 days
1956	73 days
1957	48 days
1958	60 days
1959	83 days
1960	66 days
1961	41 days
1962	37 days
1963	35 days
1964	112 days
1965	44 days
1966	91 days
1967	65 days
1968	49 days
1969	43 days
1970	76 days
1971	96 days
1972	124 days
1973	43 days
1974	83 days
1975	57 days
1976	60 days
1977	50 days
1978	37 days
1979	38 days
1980	43 days
1981	32 days
1982	46 days
1983	42 days
1984	46 days
1985	43 days
1986	58 days
1987	36 days
1988	41 days
1989	37 days
1990	49 days
1991	111 days
1992	38 days
1993	31 days
1994	66 days
1995	55 days
1996	130 days
1997	37 days
1998	29 days
1999	47 days
2000	61 days
2001	47 days
2002	56 days
2003	67 days
2004	38 days
2005	77 days
2006	111 days
2007	63 days
2008	54 days
2009	42 days
2010	56 days
2011	91 days
2012	63 days
2013	101 days
2014	60 days
2015	43 days
2016	31 days
2019	32 days
2020	41 days
2021	91 days
2022	72 days
2023	55 days
2024	43 days
2025	85 days
2026	96 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

74 years, 1948 to 2025

A day with at least 47.5 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 159.9 mm (6.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Ft Sumner 5 S: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	47.5 mm (1.9 in)
5 years	71.9 mm (2.8 in)
10 years	90.1 mm (3.5 in)
25 years	115.8 mm (4.6 in)
50 years	137.0 mm (5.4 in)
100 years	159.9 mm (6.3 in)	Longer than the 74 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, 74 years of values from 1948 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: 184.9 mm (7.3 in) in 1970; 126.7 mm (5.0 in) in 1991; 124.7 mm (4.9 in) in 1999.

Download the Data

Data for Ft Sumner 5 S standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ft Sumner 5 S 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).