Seymour 3NW Weather Records (USC00418221)

Record envelope, standing records and threshold days for Seymour 3NW (USC00418221), Texas, United States, with 122 years of record.

Key Facts for Seymour 3NW

Seymour 3NW (USC00418221) is a weather station in Texas, United States at 33.64 latitude and -99.29 longitude, 400 m (1,311 ft) above sea level.
The station reports from 1905 to 2026, 122 years of record.
1,464 records set at Seymour 3NW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Seymour 3NW set a daily record precipitation of 89.9 mm (3.5 in) on 15 October 2026 (provisional).

Provisional Records

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

About the Station

Location: Texas, United States, 33.64 latitude, -99.29 longitude.
Elevation: 400 m (1,311 ft).
Period of record: 1905 to 2026, 122 years.
Eligible elements: tmax, tmin, 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 Seymour 3NW. 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 Seymour 3NW, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	31.7 C (89.1 F)	-25.6 C (-14.1 F)	n/a	n/a
Feb	33.9 C (93.0 F)	-22.8 C (-9.0 F)	n/a	n/a
Mar	37.8 C (100.0 F)	-15.0 C (5.0 F)	n/a	n/a
Apr	39.4 C (102.9 F)	-5.6 C (21.9 F)	n/a	n/a
May	41.7 C (107.1 F)	-1.1 C (30.0 F)	n/a	n/a
Jun	46.1 C (115.0 F)	8.3 C (46.9 F)	n/a	n/a
Jul	45.6 C (114.1 F)	12.2 C (54.0 F)	n/a	n/a
Aug	48.9 C (120.0 F)	10.0 C (50.0 F)	n/a	n/a
Sep	44.4 C (111.9 F)	1.1 C (34.0 F)	n/a	n/a
Oct	41.1 C (106.0 F)	-6.7 C (19.9 F)	n/a	n/a
Nov	33.3 C (91.9 F)	-13.9 C (7.0 F)	n/a	n/a
Dec	32.2 C (90.0 F)	-22.2 C (-8.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Seymour 3NW still stand. 1953 holds the most, with 38.

Standing records at Seymour 3NW by the year they were set
Year set	Standing records
1905	6
1906	6
1908	9
1909	21
1910	17
1911	30
1912	30
1913	19
1914	16
1915	14
1924	3
1925	17
1926	12
1927	19
1928	20
1929	12
1930	20
1931	18
1932	21
1933	14
1934	25
1935	15
1936	27
1937	24
1938	9
1939	26
1940	15
1941	4
1942	12
1943	17
1944	8
1945	11
1946	23
1947	17
1948	21
1949	11
1950	23
1951	22
1952	27
1953	38
1954	23
1955	24
1956	19
1957	25
1958	7
1959	17
1960	17
1961	19
1962	16
1963	19
1964	12
1965	18
1966	23
1967	17
1968	5
1969	8
1970	12
1971	16
1972	16
1973	8
1974	21
1975	12
1976	18
1977	11
1978	14
1979	17
1980	17
1981	8
1982	8
1983	23
1984	12
1985	24
1986	19
1987	7
1988	7
1989	28
1990	18
1991	11
1992	10
1993	11
1994	9
1995	14
1996	13
1997	16
1998	13
1999	6
2000	18
2001	8
2002	11
2003	12
2004	7
2005	11
2006	10

All-Time Record Progression

2 new records

2 all-time records were set at Seymour 3NW between 4 January 1947 and 16 May 1989. Each dot is a new record.

When Seymour 3NW set new all-time records
Date	Kind	Detail
1947-01-04	Record low minimum temperature	Record low minimum temperature -25.6 C (-14.1 F)
1989-05-16	Record daily precipitation	Record daily precipitation 157.5 mm (6.2 in)

Wettest Day of Each Month

May: 157.5 mm (6.2 in)

The wettest day on record for each calendar month at Seymour 3NW. The most was 157.5 mm (6.2 in) on 16 May 1989.

Record daily precipitation for each month at Seymour 3NW
Month	Record daily precipitation (mm)	Date
Jan	64.0 mm (2.5 in)	17 January 2020
Feb	83.8 mm (3.3 in)	28 February 1981
Mar	99.1 mm (3.9 in)	23 March 2000
Apr	113.8 mm (4.5 in)	12 April 1967
May	157.5 mm (6.2 in)	16 May 1989
Jun	96.5 mm (3.8 in)	5 June 1986
Jul	145.8 mm (5.7 in)	29 July 2004
Aug	106.7 mm (4.2 in)	5 August 1978
Sep	150.6 mm (5.9 in)	9 September 2020
Oct	101.6 mm (4.0 in)	4 October 1953
Nov	96.8 mm (3.8 in)	15 November 2001
Dec	101.6 mm (4.0 in)	8 December 1911

Period of Record Coverage

1905 to 2006

93 years of record at Seymour 3NW, 1905 to 2006. 21 years have data for under 90 percent of days and are left out of rankings: 1905, 1906, 1908, 1911, 1913, 1915, 1924, 1925 and others.

Days with data per year at Seymour 3NW
Year	Days with data	Share of year	Complete
1905	213	58%	No
1906	151	41%	No
1908	145	40%	No
1909	365	100%	Yes
1910	363	99%	Yes
1911	292	80%	No
1912	365	100%	Yes
1913	305	84%	No
1914	347	95%	Yes
1915	231	63%	No
1924	126	34%	No
1925	236	65%	No
1926	332	91%	Yes
1927	342	94%	Yes
1928	341	93%	Yes
1929	338	93%	Yes
1930	356	98%	Yes
1931	357	98%	Yes
1932	356	97%	Yes
1933	350	96%	Yes
1934	343	94%	Yes
1935	345	95%	Yes
1936	346	95%	Yes
1937	354	97%	Yes
1938	230	63%	No
1939	356	98%	Yes
1940	313	86%	No
1941	325	89%	No
1942	342	94%	Yes
1943	327	90%	No
1944	346	95%	Yes
1945	325	89%	No
1946	347	95%	Yes
1947	300	82%	No
1948	317	87%	No
1949	350	96%	Yes
1950	355	97%	Yes
1951	345	95%	Yes
1952	356	97%	Yes
1953	334	92%	Yes
1954	358	98%	Yes
1955	361	99%	Yes
1956	349	95%	Yes
1957	358	98%	Yes
1958	316	87%	No
1959	359	98%	Yes
1960	332	91%	Yes
1961	357	98%	Yes
1962	354	97%	Yes
1963	356	98%	Yes
1964	362	99%	Yes
1965	364	100%	Yes
1966	346	95%	Yes
1967	358	98%	Yes
1968	365	100%	Yes
1969	352	96%	Yes
1970	341	93%	Yes
1971	364	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	364	100%	Yes
1978	365	100%	Yes
1979	362	99%	Yes
1980	366	100%	Yes
1981	364	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	363	99%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	364	100%	Yes
1990	329	90%	Yes
1991	365	100%	Yes
1992	328	90%	No
1993	356	98%	Yes
1994	365	100%	Yes
1995	350	96%	Yes
1996	356	97%	Yes
1997	365	100%	Yes
1998	284	78%	No
1999	364	100%	Yes
2000	266	73%	No
2001	331	91%	Yes
2002	301	82%	No
2003	347	95%	Yes
2004	352	96%	Yes
2005	365	100%	Yes
2006	242	66%	No

Latest Records

Latest records at Seymour 3NW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 October 2026	Seymour 3NW, US	daily rain (Provisional)	89.9 mm (3.5 in)	15.7 mm (0.6 in)	84 years	44 of 100 (Notable)
6 June 2026	Seymour 3NW, US	daily rain	84.6 mm (3.3 in)	7.4 mm (0.29 in)	40 years	26 of 100 (Routine)
2 April 2026	Seymour 3NW, US	daily rain	32.3 mm (1.3 in)	15.0 mm (0.6 in)	40 years	32 of 100 (Routine)
1 April 2026	Seymour 3NW, US	daily rain	29.0 mm (1.1 in)	8.7 mm (0.34 in)	113 years	46 of 100 (Notable)
26 January 2026	Seymour 3NW, US	daily snow depth	5.1 cm (2.0 in)	5.1 cm (2.0 in)	120 years	20 of 100 (Routine)
25 January 2026	Seymour 3NW, US	daily snowfall	5.6 cm (2.2 in)	3.1 cm (1.2 in)	3 years	15 of 100 (Routine)
25 January 2026	Seymour 3NW, US	daily snow depth	5.1 cm (2.0 in)	2.6 cm (1.0 in)	3 years	12 of 100 (Routine)
9 July 2025	Seymour 3NW, US	daily rain	28.4 mm (1.1 in)	3.0 mm (0.12 in)	66 years	30 of 100 (Routine)
30 April 2025	Seymour 3NW, US	daily rain	88.9 mm (3.5 in)	49.5 mm (1.9 in)	84 years	71 of 100 (Major)
10 January 2025	Seymour 3NW, US	daily snow depth	2.5 cm (1.0 in)	2.5 cm (1.0 in)	119 years	20 of 100 (Routine)
12 June 2024	Seymour 3NW, US	daily rain	83.6 mm (3.3 in)	18.1 mm (0.7 in)	80 years	45 of 100 (Notable)
11 June 2024	Seymour 3NW, US	daily rain	66.8 mm (2.6 in)	25.7 mm (1.0 in)	26 years	33 of 100 (Routine)
10 June 2024	Seymour 3NW, US	daily rain	37.6 mm (1.5 in)	8.1 mm (0.32 in)	62 years	33 of 100 (Routine)
28 April 2024	Seymour 3NW, US	daily rain	87.6 mm (3.4 in)	23.6 mm (0.9 in)	3 years	27 of 100 (Routine)
11 February 2024	Seymour 3NW, US	daily rain	21.1 mm (0.8 in)	6.4 mm (0.25 in)	46 years	20 of 100 (Routine)
27 January 2024	Seymour 3NW, US	daily rain	25.4 mm (1.0 in)	11.4 mm (0.4 in)	32 years	32 of 100 (Routine)
5 January 2024	Seymour 3NW, US	daily rain	10.7 mm (0.4 in)	1.0 mm (0.04 in)	68 years	20 of 100 (Routine)
15 December 2023	Seymour 3NW, US	daily rain	33.0 mm (1.3 in)	7.6 mm (0.30 in)	64 years	35 of 100 (Notable)
25 January 2023	Seymour 3NW, US	daily snowfall	2.5 cm (1.0 in)	2.5 cm (1.0 in)	116 years	20 of 100 (Routine)
25 January 2023	Seymour 3NW, US	daily snow depth	2.5 cm (1.0 in)	2.5 cm (1.0 in)	116 years	20 of 100 (Routine)

Climate Trend

63 complete years, 1909 to 2005

One stripe for each of 63 complete years at Seymour 3NW, 1909 to 2005. Blue stripes are years cooler than the station's own mean of 17.2 C (62.9 F); red stripes are warmer. The coolest year was 1979, at 15.9 C (60.5 F), and the warmest was 1946, at 18.9 C (66.1 F). The strongest colour marks a difference of 1.8 C (3.2 F).

Annual mean temperature at Seymour 3NW as warming stripes, 1909 to 2005
Year	Annual mean temperature	Difference from the station mean
1909	17.8 C	+0.59 C
1910	18.2 C	+0.98 C
1912	17.0 C	-0.20 C
1914	17.7 C	+0.53 C
1927	18.4 C	+1.22 C
1929	17.2 C	+0.03 C
1930	17.4 C	+0.19 C
1931	18.1 C	+0.88 C
1932	16.4 C	-0.77 C
1933	17.8 C	+0.57 C
1934	18.8 C	+1.63 C
1935	17.6 C	+0.36 C
1936	17.4 C	+0.19 C
1937	17.1 C	-0.10 C
1944	17.0 C	-0.21 C
1946	18.9 C	+1.75 C
1949	17.2 C	+0.02 C
1950	17.3 C	+0.15 C
1951	17.9 C	+0.68 C
1952	18.4 C	+1.20 C
1954	18.8 C	+1.62 C
1955	17.7 C	+0.52 C
1956	17.5 C	+0.29 C
1957	16.3 C	-0.87 C
1959	16.2 C	-0.98 C
1961	16.3 C	-0.89 C
1962	17.5 C	+0.26 C
1963	18.0 C	+0.76 C
1964	17.4 C	+0.24 C
1965	17.4 C	+0.20 C
1967	16.9 C	-0.27 C
1968	16.1 C	-1.14 C
1969	17.1 C	-0.08 C
1970	16.7 C	-0.46 C
1971	17.1 C	-0.09 C
1972	16.8 C	-0.39 C
1973	16.7 C	-0.52 C
1974	17.3 C	+0.09 C
1975	16.2 C	-1.04 C
1976	16.2 C	-0.96 C
1977	17.7 C	+0.47 C
1978	16.5 C	-0.73 C
1979	15.9 C	-1.34 C
1980	17.3 C	+0.11 C
1981	17.2 C	+0.04 C
1982	16.5 C	-0.66 C
1983	16.0 C	-1.18 C
1984	17.1 C	-0.09 C
1985	16.5 C	-0.70 C
1986	17.5 C	+0.28 C
1987	16.3 C	-0.86 C
1988	16.6 C	-0.59 C
1989	16.6 C	-0.55 C
1991	17.1 C	-0.09 C
1993	16.3 C	-0.89 C
1994	17.2 C	-0.01 C
1995	17.0 C	-0.22 C
1996	17.2 C	-0.02 C
1997	16.6 C	-0.55 C
1999	18.3 C	+1.06 C
2003	17.5 C	+0.26 C
2004	17.1 C	-0.07 C
2005	17.3 C	+0.10 C

The annual mean temperature here has fallen by 0.12 C (0.05 to 0.18) per decade over 1909 to 2005. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 63 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Seymour 3NW
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.11 C (-0.18 to -0.05) per decade	-0.2 F (-0.3 to -0.1) per decade	1909 to 2005	63	Fall
Mean daily maximum	-0.2 C (-0.3 to -0.1) per decade	-0.4 F (-0.5 to -0.2) per decade	1909 to 2005	63	Fall
Mean daily minimum	-0.03 C (-0.09 to 0.04) per decade	-0.05 F (-0.17 to 0.07) per decade	1909 to 2005	63	Not clearly different from zero

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

1905 to 2026

Yearly extremes at Seymour 3NW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	48.9 C (120.0 F)	1936	42.8 C (109.0 F)	93
Coldest night (TNn)	-25.6 C (-14.1 F)	1947	-12.8 C (9.0 F)	93
Wettest day (Rx1day)	157.5 mm (6.2 in)	1989	68.6 mm (2.7 in)	111
Wettest five days (Rx5day)	220.2 mm (8.7 in)	2005	103.9 mm (4.1 in)	111
Longest dry spell (CDD)	82 days	2011	37 days	111

Hottest day (TXx)

The hottest day of the year at Seymour 3NW, 1905 to 2026. The record is 48.9 C (120.0 F) in 1936, marked on the chart; the median year is 42.8 C (109.0 F).

Hottest day (TXx) at Seymour 3NW by year
Year	Hottest day (TXx)
1905	38.9 C (102.0 F)
1906	36.1 C (97.0 F)
1908	38.9 C (102.0 F)
1909	41.1 C (106.0 F)
1910	42.8 C (109.0 F)
1911	43.9 C (111.0 F)
1912	44.4 C (111.9 F)
1913	41.1 C (106.0 F)
1914	43.3 C (109.9 F)
1915	39.4 C (102.9 F)
1923	n/a
1924	42.2 C (108.0 F)
1925	44.4 C (111.9 F)
1926	40.0 C (104.0 F)
1927	41.7 C (107.1 F)
1928	43.3 C (109.9 F)
1929	43.3 C (109.9 F)
1930	43.3 C (109.9 F)
1931	41.7 C (107.1 F)
1932	42.8 C (109.0 F)
1933	42.8 C (109.0 F)
1934	43.3 C (109.9 F)
1935	44.4 C (111.9 F)
1936	48.9 C (120.0 F)
1937	46.1 C (115.0 F)
1938	42.8 C (109.0 F)
1939	45.6 C (114.1 F)
1940	44.4 C (111.9 F)
1941	41.7 C (107.1 F)
1942	43.3 C (109.9 F)
1943	46.7 C (116.1 F)
1944	44.4 C (111.9 F)
1945	43.3 C (109.9 F)
1946	45.6 C (114.1 F)
1947	43.3 C (109.9 F)
1948	44.4 C (111.9 F)
1949	43.3 C (109.9 F)
1950	39.4 C (102.9 F)
1951	44.4 C (111.9 F)
1952	45.6 C (114.1 F)
1953	45.6 C (114.1 F)
1954	45.0 C (113.0 F)
1955	44.4 C (111.9 F)
1956	43.9 C (111.0 F)
1957	43.3 C (109.9 F)
1958	42.2 C (108.0 F)
1959	43.9 C (111.0 F)
1960	42.8 C (109.0 F)
1961	39.4 C (102.9 F)
1962	42.8 C (109.0 F)
1963	41.7 C (107.1 F)
1964	45.6 C (114.1 F)
1965	40.6 C (105.1 F)
1966	42.2 C (108.0 F)
1967	41.1 C (106.0 F)
1968	40.6 C (105.1 F)
1969	44.4 C (111.9 F)
1970	41.1 C (106.0 F)
1971	40.6 C (105.1 F)
1972	43.3 C (109.9 F)
1973	40.0 C (104.0 F)
1974	42.2 C (108.0 F)
1975	37.8 C (100.0 F)
1976	40.6 C (105.1 F)
1977	40.6 C (105.1 F)
1978	43.9 C (111.0 F)
1979	38.3 C (100.9 F)
1980	45.6 C (114.1 F)
1981	41.1 C (106.0 F)
1982	40.0 C (104.0 F)
1983	41.7 C (107.1 F)
1984	42.2 C (108.0 F)
1985	41.1 C (106.0 F)
1986	43.3 C (109.9 F)
1987	40.6 C (105.1 F)
1988	41.1 C (106.0 F)
1989	41.7 C (107.1 F)
1990	40.0 C (104.0 F)
1991	40.0 C (104.0 F)
1992	39.4 C (102.9 F)
1993	41.1 C (106.0 F)
1994	46.1 C (115.0 F)
1995	43.9 C (111.0 F)
1996	43.3 C (109.9 F)
1997	40.6 C (105.1 F)
1998	43.9 C (111.0 F)
1999	42.8 C (109.0 F)
2000	43.9 C (111.0 F)
2001	42.2 C (108.0 F)
2002	38.9 C (102.0 F)
2003	43.3 C (109.9 F)
2004	40.6 C (105.1 F)
2005	40.0 C (104.0 F)
2006	41.7 C (107.1 F)
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

Coldest night (TNn)

The coldest night of the year at Seymour 3NW, 1905 to 2026. The record is -25.6 C (-14.1 F) in 1947, marked on the chart; the median year is -12.8 C (9.0 F).

Coldest night (TNn) at Seymour 3NW by year
Year	Coldest night (TNn)
1905	-7.2 C (19.0 F)
1906	-11.7 C (10.9 F)
1908	-9.4 C (15.1 F)
1909	-15.6 C (3.9 F)
1910	-12.8 C (9.0 F)
1911	-15.0 C (5.0 F)
1912	-17.8 C (0.0 F)
1913	-15.0 C (5.0 F)
1914	-11.7 C (10.9 F)
1915	-7.2 C (19.0 F)
1923	n/a
1924	-15.6 C (3.9 F)
1925	-11.1 C (12.0 F)
1926	-14.4 C (6.1 F)
1927	-11.7 C (10.9 F)
1928	-13.3 C (8.1 F)
1929	-13.9 C (7.0 F)
1930	-21.1 C (-6.0 F)
1931	-8.3 C (17.1 F)
1932	-12.2 C (10.0 F)
1933	-20.6 C (-5.1 F)
1934	-9.4 C (15.1 F)
1935	-15.6 C (3.9 F)
1936	-17.2 C (1.0 F)
1937	-12.8 C (9.0 F)
1938	-12.2 C (10.0 F)
1939	-8.9 C (16.0 F)
1940	-15.6 C (3.9 F)
1941	-7.8 C (18.0 F)
1942	-16.1 C (3.0 F)
1943	-16.7 C (1.9 F)
1944	-10.6 C (12.9 F)
1945	-11.7 C (10.9 F)
1946	-10.0 C (14.0 F)
1947	-25.6 C (-14.1 F)
1948	-15.0 C (5.0 F)
1949	-11.1 C (12.0 F)
1950	-13.9 C (7.0 F)
1951	-18.9 C (-2.0 F)
1952	-8.3 C (17.1 F)
1953	-15.0 C (5.0 F)
1954	-11.1 C (12.0 F)
1955	-9.4 C (15.1 F)
1956	-12.2 C (10.0 F)
1957	-15.6 C (3.9 F)
1958	-12.8 C (9.0 F)
1959	-16.7 C (1.9 F)
1960	-14.4 C (6.1 F)
1961	-12.8 C (9.0 F)
1962	-17.2 C (1.0 F)
1963	-15.6 C (3.9 F)
1964	-13.3 C (8.1 F)
1965	-10.6 C (12.9 F)
1966	-21.7 C (-7.1 F)
1967	-12.2 C (10.0 F)
1968	-13.9 C (7.0 F)
1969	-12.8 C (9.0 F)
1970	-11.1 C (12.0 F)
1971	-14.4 C (6.1 F)
1972	-13.9 C (7.0 F)
1973	-12.2 C (10.0 F)
1974	-12.2 C (10.0 F)
1975	-12.8 C (9.0 F)
1976	-13.9 C (7.0 F)
1977	-17.2 C (1.0 F)
1978	-16.7 C (1.9 F)
1979	-15.0 C (5.0 F)
1980	-13.9 C (7.0 F)
1981	-14.4 C (6.1 F)
1982	-15.6 C (3.9 F)
1983	-17.8 C (0.0 F)
1984	-13.9 C (7.0 F)
1985	-22.8 C (-9.0 F)
1986	-13.3 C (8.1 F)
1987	-12.2 C (10.0 F)
1988	-12.2 C (10.0 F)
1989	-22.2 C (-8.0 F)
1990	-14.4 C (6.1 F)
1991	-12.8 C (9.0 F)
1992	-11.7 C (10.9 F)
1993	-10.0 C (14.0 F)
1994	-10.6 C (12.9 F)
1995	-10.6 C (12.9 F)
1996	-16.7 C (1.9 F)
1997	-10.0 C (14.0 F)
1998	-11.1 C (12.0 F)
1999	-9.4 C (15.1 F)
2000	-8.3 C (17.1 F)
2001	-6.7 C (19.9 F)
2002	-11.7 C (10.9 F)
2003	-10.0 C (14.0 F)
2004	-12.8 C (9.0 F)
2005	-13.9 C (7.0 F)
2006	-8.9 C (16.0 F)
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 Seymour 3NW, 1905 to 2026. The record is 157.5 mm (6.2 in) in 1989, marked on the chart; the median year is 68.6 mm (2.7 in).

Wettest day (Rx1day) at Seymour 3NW by year
Year	Wettest day (Rx1day)
1905	69.3 mm (2.7 in)
1906	75.7 mm (3.0 in)
1908	31.2 mm (1.2 in)
1909	50.8 mm (2.0 in)
1910	84.3 mm (3.3 in)
1911	101.6 mm (4.0 in)
1912	54.9 mm (2.2 in)
1913	78.7 mm (3.1 in)
1914	63.5 mm (2.5 in)
1915	101.9 mm (4.0 in)
1923	63.5 mm (2.5 in)
1924	69.9 mm (2.8 in)
1925	71.9 mm (2.8 in)
1926	76.2 mm (3.0 in)
1927	68.6 mm (2.7 in)
1928	25.9 mm (1.0 in)
1929	69.1 mm (2.7 in)
1930	68.6 mm (2.7 in)
1931	75.2 mm (3.0 in)
1932	97.3 mm (3.8 in)
1933	54.9 mm (2.2 in)
1934	65.3 mm (2.6 in)
1935	50.3 mm (2.0 in)
1936	93.0 mm (3.7 in)
1937	43.4 mm (1.7 in)
1938	73.4 mm (2.9 in)
1939	67.6 mm (2.7 in)
1940	47.5 mm (1.9 in)
1941	157.2 mm (6.2 in)
1942	76.5 mm (3.0 in)
1943	38.4 mm (1.5 in)
1944	65.5 mm (2.6 in)
1945	45.5 mm (1.8 in)
1946	44.5 mm (1.8 in)
1947	36.8 mm (1.4 in)
1948	59.4 mm (2.3 in)
1949	61.0 mm (2.4 in)
1950	66.0 mm (2.6 in)
1951	87.4 mm (3.4 in)
1952	30.5 mm (1.2 in)
1953	101.6 mm (4.0 in)
1954	64.0 mm (2.5 in)
1955	88.9 mm (3.5 in)
1956	36.8 mm (1.4 in)
1957	59.7 mm (2.4 in)
1958	62.5 mm (2.5 in)
1959	82.3 mm (3.2 in)
1960	83.3 mm (3.3 in)
1961	115.6 mm (4.6 in)
1962	55.4 mm (2.2 in)
1963	44.7 mm (1.8 in)
1964	65.3 mm (2.6 in)
1965	59.4 mm (2.3 in)
1966	78.2 mm (3.1 in)
1967	113.8 mm (4.5 in)
1968	95.3 mm (3.8 in)
1969	81.3 mm (3.2 in)
1970	36.8 mm (1.4 in)
1971	48.8 mm (1.9 in)
1972	73.2 mm (2.9 in)
1973	50.0 mm (2.0 in)
1974	58.9 mm (2.3 in)
1975	64.5 mm (2.5 in)
1976	48.8 mm (1.9 in)
1977	48.5 mm (1.9 in)
1978	106.7 mm (4.2 in)
1979	31.0 mm (1.2 in)
1980	97.5 mm (3.8 in)
1981	83.8 mm (3.3 in)
1982	108.0 mm (4.3 in)
1983	46.5 mm (1.8 in)
1984	36.6 mm (1.4 in)
1985	77.2 mm (3.0 in)
1986	129.5 mm (5.1 in)
1987	59.9 mm (2.4 in)
1988	97.0 mm (3.8 in)
1989	157.5 mm (6.2 in)
1990	79.2 mm (3.1 in)
1991	71.1 mm (2.8 in)
1992	55.9 mm (2.2 in)
1993	62.2 mm (2.4 in)
1994	94.0 mm (3.7 in)
1995	68.1 mm (2.7 in)
1996	50.8 mm (2.0 in)
1997	56.1 mm (2.2 in)
1998	69.9 mm (2.8 in)
1999	55.9 mm (2.2 in)
2000	99.1 mm (3.9 in)
2001	127.3 mm (5.0 in)
2002	86.9 mm (3.4 in)
2003	63.2 mm (2.5 in)
2004	145.8 mm (5.7 in)
2005	89.9 mm (3.5 in)
2006	38.9 mm (1.5 in)
2010	11.7 mm (0.5 in)
2011	96.0 mm (3.8 in)
2012	47.0 mm (1.9 in)
2013	65.3 mm (2.6 in)
2014	32.0 mm (1.3 in)
2015	114.0 mm (4.5 in)
2016	89.9 mm (3.5 in)
2017	66.3 mm (2.6 in)
2018	93.5 mm (3.7 in)
2019	78.7 mm (3.1 in)
2020	150.6 mm (5.9 in)
2021	64.0 mm (2.5 in)
2022	68.6 mm (2.7 in)
2023	36.1 mm (1.4 in)
2024	87.6 mm (3.4 in)
2025	88.9 mm (3.5 in)
2026	89.9 mm (3.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Seymour 3NW, 1905 to 2026. The record is 220.2 mm (8.7 in) in 2005, marked on the chart; the median year is 103.9 mm (4.1 in).

Wettest five days (Rx5day) at Seymour 3NW by year
Year	Wettest five days (Rx5day)
1905	157.0 mm (6.2 in)
1906	97.1 mm (3.8 in)
1908	66.8 mm (2.6 in)
1909	94.9 mm (3.7 in)
1910	84.8 mm (3.3 in)
1911	110.5 mm (4.4 in)
1912	71.4 mm (2.8 in)
1913	94.5 mm (3.7 in)
1914	145.6 mm (5.7 in)
1915	181.6 mm (7.1 in)
1923	76.5 mm (3.0 in)
1924	76.3 mm (3.0 in)
1925	100.3 mm (3.9 in)
1926	77.7 mm (3.1 in)
1927	76.2 mm (3.0 in)
1928	28.5 mm (1.1 in)
1929	148.7 mm (5.9 in)
1930	125.0 mm (4.9 in)
1931	103.9 mm (4.1 in)
1932	103.7 mm (4.1 in)
1933	117.4 mm (4.6 in)
1934	112.0 mm (4.4 in)
1935	88.1 mm (3.5 in)
1936	132.6 mm (5.2 in)
1937	67.0 mm (2.6 in)
1938	125.2 mm (4.9 in)
1939	74.4 mm (2.9 in)
1940	97.3 mm (3.8 in)
1941	208.3 mm (8.2 in)
1942	125.5 mm (4.9 in)
1943	72.4 mm (2.9 in)
1944	89.1 mm (3.5 in)
1945	84.6 mm (3.3 in)
1946	79.3 mm (3.1 in)
1947	86.1 mm (3.4 in)
1948	107.4 mm (4.2 in)
1949	96.0 mm (3.8 in)
1950	108.9 mm (4.3 in)
1951	92.4 mm (3.6 in)
1952	49.0 mm (1.9 in)
1953	125.0 mm (4.9 in)
1954	87.3 mm (3.4 in)
1955	114.8 mm (4.5 in)
1956	63.8 mm (2.5 in)
1957	116.4 mm (4.6 in)
1958	105.2 mm (4.1 in)
1959	105.1 mm (4.1 in)
1960	102.6 mm (4.0 in)
1961	122.7 mm (4.8 in)
1962	163.1 mm (6.4 in)
1963	87.7 mm (3.5 in)
1964	116.3 mm (4.6 in)
1965	70.3 mm (2.8 in)
1966	94.5 mm (3.7 in)
1967	120.4 mm (4.7 in)
1968	97.5 mm (3.8 in)
1969	104.5 mm (4.1 in)
1970	71.1 mm (2.8 in)
1971	82.4 mm (3.2 in)
1972	153.2 mm (6.0 in)
1973	67.3 mm (2.6 in)
1974	100.0 mm (3.9 in)
1975	90.9 mm (3.6 in)
1976	93.6 mm (3.7 in)
1977	76.2 mm (3.0 in)
1978	187.4 mm (7.4 in)
1979	80.8 mm (3.2 in)
1980	157.2 mm (6.2 in)
1981	104.1 mm (4.1 in)
1982	136.7 mm (5.4 in)
1983	126.0 mm (5.0 in)
1984	50.8 mm (2.0 in)
1985	125.5 mm (4.9 in)
1986	195.0 mm (7.7 in)
1987	86.6 mm (3.4 in)
1988	131.6 mm (5.2 in)
1989	168.2 mm (6.6 in)
1990	163.8 mm (6.4 in)
1991	110.5 mm (4.4 in)
1992	136.6 mm (5.4 in)
1993	72.7 mm (2.9 in)
1994	106.9 mm (4.2 in)
1995	143.3 mm (5.6 in)
1996	154.2 mm (6.1 in)
1997	73.4 mm (2.9 in)
1998	85.1 mm (3.4 in)
1999	106.7 mm (4.2 in)
2000	115.9 mm (4.6 in)
2001	137.0 mm (5.4 in)
2002	124.5 mm (4.9 in)
2003	98.9 mm (3.9 in)
2004	205.3 mm (8.1 in)
2005	220.2 mm (8.7 in)
2006	41.7 mm (1.6 in)
2010	19.1 mm (0.8 in)
2011	98.0 mm (3.9 in)
2012	62.8 mm (2.5 in)
2013	142.3 mm (5.6 in)
2014	59.4 mm (2.3 in)
2015	164.6 mm (6.5 in)
2016	93.3 mm (3.7 in)
2017	117.0 mm (4.6 in)
2018	162.1 mm (6.4 in)
2019	88.9 mm (3.5 in)
2020	196.8 mm (7.7 in)
2021	104.9 mm (4.1 in)
2022	70.4 mm (2.8 in)
2023	59.7 mm (2.4 in)
2024	188.0 mm (7.4 in)
2025	151.9 mm (6.0 in)
2026	105.7 mm (4.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Seymour 3NW, 1905 to 2026. The record is 82 days in 2011, marked on the chart; the median year is 37 days.

Longest dry spell (CDD) at Seymour 3NW by year
Year	Longest dry spell (CDD)
1905	23 days
1906	32 days
1908	32 days
1909	49 days
1910	56 days
1911	44 days
1912	42 days
1913	42 days
1914	61 days
1915	43 days
1923	72 days
1924	42 days
1925	72 days
1926	38 days
1927	39 days
1928	27 days
1929	26 days
1930	55 days
1931	26 days
1932	55 days
1933	29 days
1934	67 days
1935	18 days
1936	38 days
1937	30 days
1938	43 days
1939	25 days
1940	46 days
1941	23 days
1942	29 days
1943	74 days
1944	33 days
1945	51 days
1946	24 days
1947	48 days
1948	42 days
1949	38 days
1950	63 days
1951	34 days
1952	51 days
1953	34 days
1954	68 days
1955	56 days
1956	39 days
1957	33 days
1958	42 days
1959	46 days
1960	41 days
1961	33 days
1962	30 days
1963	36 days
1964	44 days
1965	44 days
1966	25 days
1967	42 days
1968	29 days
1969	38 days
1970	49 days
1971	51 days
1972	40 days
1973	27 days
1974	32 days
1975	31 days
1976	66 days
1977	50 days
1978	34 days
1979	22 days
1980	31 days
1981	31 days
1982	29 days
1983	26 days
1984	29 days
1985	27 days
1986	33 days
1987	37 days
1988	36 days
1989	60 days
1990	44 days
1991	56 days
1992	23 days
1993	27 days
1994	28 days
1995	44 days
1996	75 days
1997	26 days
1998	29 days
1999	33 days
2000	30 days
2001	47 days
2002	28 days
2003	47 days
2004	25 days
2005	50 days
2006	27 days
2010	23 days
2011	82 days
2012	33 days
2013	31 days
2014	35 days
2015	35 days
2016	36 days
2017	40 days
2018	30 days
2019	46 days
2020	41 days
2021	55 days
2022	33 days
2023	30 days
2024	40 days
2025	37 days
2026	54 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

63 years with a frost

Across 63 years with a frost, the median last spring frost at Seymour 3NW falls on 4 April and the median first autumn frost on 4 November, which leaves a median of 218 days between them.

In 1970 to 2005 the median growing season was 220 days. That is 8 days more than in 1909 to 1965.

Fitted over all years, the growing season changes by +1.6 days per decade at this station.

Frost dates and growing season at Seymour 3NW
Measure	Median, all years	Earliest period (1909 to 1965)	Recent period (1970 to 2005)	Recent against earliest	Fitted trend
Last spring frost	4 April	5 April	3 April	2 days earlier	-1.4 days per decade
First autumn frost	4 November	2 November	6 November	4 days later	+0.2 days per decade
Growing days	218 days	212 days	220 days	8 days more	+1.6 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

101 years, 1909 to 2025

A day with at least 68.0 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 159.6 mm (6.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Seymour 3NW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	68.0 mm (2.7 in)
5 years	92.5 mm (3.6 in)
10 years	108.7 mm (4.3 in)
25 years	129.2 mm (5.1 in)
50 years	144.5 mm (5.7 in)
100 years	159.6 mm (6.3 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 101 years of values from 1909 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: 157.5 mm (6.2 in) in 1989; 157.2 mm (6.2 in) in 1941; 150.6 mm (5.9 in) in 2020.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Seymour 3NW, at 1961. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1961 ran 0.4 C (0.7 F) higher than in the years before (likely change).

Suspected changes in the annual mean temperature at Seymour 3NW, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1961	+0.4	+0.7	likely	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.

Download the Data

Data for Seymour 3NW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Seymour 3NW 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).