Wellpinit Weather Records (USC00459058)

Record envelope, standing records and threshold days for Wellpinit (USC00459058), Washington, United States, with 85 years of record.

Key Facts for Wellpinit

Wellpinit (USC00459058) is a weather station in Washington, United States at 47.90 latitude and -117.99 longitude, 759 m (2,490 ft) above sea level.
The station reports from 1923 to 2007, 85 years of record.
1,464 records set at Wellpinit still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Wellpinit set a daily record low maximum temperature of -11.1 C (12.0 F) on 1 December 2007.

About the Station

Location: Washington, United States, 47.90 latitude, -117.99 longitude.
Elevation: 759 m (2,490 ft).
Period of record: 1923 to 2007, 85 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 Wellpinit. 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 Wellpinit, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	13.9 C (57.0 F)	-26.7 C (-16.1 F)	n/a	n/a
Feb	17.8 C (64.0 F)	-34.4 C (-29.9 F)	n/a	n/a
Mar	22.2 C (72.0 F)	-16.7 C (1.9 F)	n/a	n/a
Apr	31.1 C (88.0 F)	-10.6 C (12.9 F)	n/a	n/a
May	36.7 C (98.1 F)	-8.3 C (17.1 F)	n/a	n/a
Jun	36.7 C (98.1 F)	-4.4 C (24.1 F)	n/a	n/a
Jul	40.0 C (104.0 F)	-1.7 C (28.9 F)	n/a	n/a
Aug	40.6 C (105.1 F)	-4.4 C (24.1 F)	n/a	n/a
Sep	40.0 C (104.0 F)	-6.7 C (19.9 F)	n/a	n/a
Oct	30.0 C (86.0 F)	-13.9 C (7.0 F)	n/a	n/a
Nov	18.3 C (64.9 F)	-17.8 C (0.0 F)	n/a	n/a
Dec	11.7 C (53.1 F)	-33.9 C (-29.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Wellpinit still stand. 1972 holds the most, with 68.

Standing records at Wellpinit by the year they were set
Year set	Standing records
1958	7
1959	34
1960	38
1961	29
1962	39
1963	43
1964	13
1965	32
1966	37
1967	33
1968	21
1969	50
1970	30
1971	28
1972	68
1973	25
1974	34
1975	31
1976	18
1977	42
1978	25
1979	22
1980	25
1981	34
1982	28
1983	24
1984	12
1985	34
1986	44
1987	66
1988	54
1989	26
1990	32
1991	25
1992	28
1993	16
1994	21
1995	9
1996	22
1997	14
1998	22
1999	33
2000	12
2001	26
2002	33
2003	39
2004	26
2005	33
2006	20
2007	7

All-Time Record Progression

2 new records

2 all-time records were set at Wellpinit between 16 April 1964 and 3 February 1989. Each dot is a new record.

When Wellpinit set new all-time records
Date	Kind	Detail
1964-04-16	Record daily precipitation	Record daily precipitation 63.5 mm (2.5 in)
1989-02-03	Record low minimum temperature	Record low minimum temperature -34.4 C (-29.9 F)

Wettest Day of Each Month

Apr: 63.5 mm (2.5 in)

The wettest day on record for each calendar month at Wellpinit. The most was 63.5 mm (2.5 in) on 16 April 1964.

Record daily precipitation for each month at Wellpinit
Month	Record daily precipitation (mm)	Date
Jan	33.8 mm (1.3 in)	31 January 1987
Feb	38.4 mm (1.5 in)	20 February 1996
Mar	36.3 mm (1.4 in)	9 March 1995
Apr	63.5 mm (2.5 in)	16 April 1964
May	63.5 mm (2.5 in)	13 May 2004
Jun	51.3 mm (2.0 in)	25 June 1999
Jul	33.0 mm (1.3 in)	9 July 1974
Aug	38.4 mm (1.5 in)	16 August 1978
Sep	37.6 mm (1.5 in)	22 September 1934
Oct	57.2 mm (2.3 in)	16 October 2006
Nov	45.2 mm (1.8 in)	29 November 1967
Dec	59.2 mm (2.3 in)	1 December 1996

Period of Record Coverage

1958 to 2007

50 years of record at Wellpinit, 1958 to 2007. 29 years have data for under 90 percent of days and are left out of rankings: 1958, 1959, 1963, 1964, 1965, 1966, 1967, 1968 and others.

Days with data per year at Wellpinit
Year	Days with data	Share of year	Complete
1958	144	39%	No
1959	290	79%	No
1960	338	92%	Yes
1961	355	97%	Yes
1962	361	99%	Yes
1963	288	79%	No
1964	197	54%	No
1965	290	79%	No
1966	286	78%	No
1967	298	82%	No
1968	192	52%	No
1969	359	98%	Yes
1970	354	97%	Yes
1971	361	99%	Yes
1972	366	100%	Yes
1973	334	92%	Yes
1974	364	100%	Yes
1975	364	100%	Yes
1976	366	100%	Yes
1977	359	98%	Yes
1978	361	99%	Yes
1979	365	100%	Yes
1980	348	95%	Yes
1981	363	99%	Yes
1982	283	78%	No
1983	246	67%	No
1984	289	79%	No
1985	356	98%	Yes
1986	354	97%	Yes
1987	350	96%	Yes
1988	322	88%	No
1989	281	77%	No
1990	164	45%	No
1991	174	48%	No
1992	297	81%	No
1993	272	75%	No
1994	156	43%	No
1995	220	60%	No
1996	339	93%	Yes
1997	351	96%	Yes
1998	299	82%	No
1999	325	89%	No
2000	279	76%	No
2001	254	70%	No
2002	264	72%	No
2003	199	55%	No
2004	206	56%	No
2005	215	59%	No
2006	196	54%	No
2007	108	30%	No

Latest Records

Latest records at Wellpinit
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 December 2007	Wellpinit, US	daily low max	-11.1 C (12.0 F)	2.2 C (4.0 F)	21 years	16 of 100 (Routine)
1 December 2007	Wellpinit, US	daily low min	-13.9 C (7.0 F)	1.7 C (3.1 F)	21 years	14 of 100 (Routine)
30 November 2007	Wellpinit, US	daily low min	-15.0 C (5.0 F)	1.1 C (2.0 F)	32 years	16 of 100 (Routine)
25 November 2007	Wellpinit, US	daily low max	-9.4 C (15.1 F)	6.6 C (11.9 F)	37 years	31 of 100 (Routine)
23 November 2007	Wellpinit, US	daily low max	-10.0 C (14.0 F)	2.2 C (4.0 F)	21 years	16 of 100 (Routine)
23 November 2007	Wellpinit, US	daily low min	-12.8 C (9.0 F)	0.6 C (1.1 F)	21 years	12 of 100 (Routine)
9 November 2007	Wellpinit, US	daily low min (Tie)	-7.8 C (18.0 F)	tie	20 years	2 of 100 (Routine)
7 November 2007	Wellpinit, US	daily low min (Tie)	-6.7 C (19.9 F)	tie	1 year	1 of 100 (Routine)
24 October 2007	Wellpinit, US	daily high min (Tie)	6.7 C (44.1 F)	tie	24 years	3 of 100 (Routine)
9 October 2007	Wellpinit, US	daily high min	10.0 C (50.0 F)	0.6 C (1.1 F)	41 years	18 of 100 (Routine)
8 October 2007	Wellpinit, US	daily high min (Tie)	8.9 C (48.0 F)	tie	20 years	2 of 100 (Routine)
2 October 2007	Wellpinit, US	daily low max (Tie)	11.1 C (52.0 F)	tie	37 years	4 of 100 (Routine)
23 October 2006	Wellpinit, US	daily low min	-6.1 C (21.0 F)	0.5 C (0.9 F)	4 years	6 of 100 (Routine)
19 October 2006	Wellpinit, US	daily high min	6.1 C (43.0 F)	1.1 C (2.0 F)	32 years	15 of 100 (Routine)
16 October 2006	Wellpinit, US	monthly rain	57.2 mm (2.3 in)	19.1 mm (0.8 in)	68 years	70 of 100 (Major)
11 October 2006	Wellpinit, US	daily low min	-6.1 C (21.0 F)	1.1 C (2.0 F)	16 years	11 of 100 (Routine)
2 October 2006	Wellpinit, US	daily high max (Tie)	27.2 C (81.0 F)	tie	31 years	3 of 100 (Routine)
1 August 2006	Wellpinit, US	daily low max	24.4 C (75.9 F)	1.2 C (2.2 F)	19 years	11 of 100 (Routine)
31 July 2006	Wellpinit, US	daily low min	1.1 C (34.0 F)	5.0 C (9.0 F)	4 years	18 of 100 (Routine)
12 July 2006	Wellpinit, US	daily low min (Tie)	1.7 C (35.1 F)	tie	1 year	1 of 100 (Routine)

Climate Trend

23 complete years, 1960 to 1999

One stripe for each of 23 complete years at Wellpinit, 1960 to 1999. Blue stripes are years cooler than the station's own mean of 8.1 C (46.6 F); red stripes are warmer. The coolest year was 1969, at 6.4 C (43.5 F), and the warmest was 1987, at 11.0 C (51.8 F). The strongest colour marks a difference of 2.9 C (5.2 F).

Annual mean temperature at Wellpinit as warming stripes, 1960 to 1999
Year	Annual mean temperature	Difference from the station mean
1960	7.6 C	-0.49 C
1961	8.3 C	+0.16 C
1962	7.5 C	-0.60 C
1969	6.4 C	-1.71 C
1970	7.6 C	-0.48 C
1971	7.7 C	-0.46 C
1972	7.1 C	-1.06 C
1974	8.6 C	+0.44 C
1975	7.6 C	-0.55 C
1976	7.8 C	-0.27 C
1977	8.0 C	-0.10 C
1978	7.1 C	-1.00 C
1979	7.4 C	-0.75 C
1980	7.8 C	-0.30 C
1981	8.8 C	+0.68 C
1982	7.8 C	-0.28 C
1984	8.9 C	+0.80 C
1985	8.6 C	+0.49 C
1986	10.3 C	+2.14 C
1987	11.0 C	+2.87 C
1996	7.7 C	-0.40 C
1997	8.5 C	+0.43 C
1999	8.6 C	+0.53 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

1923 to 2007

Yearly extremes at Wellpinit: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.6 C (105.1 F)	1961	36.7 C (98.1 F)	50
Coldest night (TNn)	-34.4 C (-29.9 F)	1989	-18.9 C (-2.0 F)	50
Wettest day (Rx1day)	63.5 mm (2.5 in)	1964	30.5 mm (1.2 in)	85
Wettest five days (Rx5day)	88.9 mm (3.5 in)	2004	48.3 mm (1.9 in)	85
Longest dry spell (CDD)	87 days	1928	36 days	85

Hottest day (TXx)

The hottest day of the year at Wellpinit, 1923 to 2007. The record is 40.6 C (105.1 F) in 1961, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Wellpinit by year
Year	Hottest day (TXx)
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
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	36.7 C (98.1 F)
1959	37.8 C (100.0 F)
1960	38.9 C (102.0 F)
1961	40.6 C (105.1 F)
1962	35.6 C (96.1 F)
1963	31.7 C (89.1 F)
1964	27.8 C (82.0 F)
1965	37.8 C (100.0 F)
1966	38.9 C (102.0 F)
1967	38.9 C (102.0 F)
1968	38.3 C (100.9 F)
1969	37.2 C (99.0 F)
1970	37.2 C (99.0 F)
1971	37.8 C (100.0 F)
1972	38.3 C (100.9 F)
1973	36.7 C (98.1 F)
1974	35.0 C (95.0 F)
1975	37.2 C (99.0 F)
1976	33.9 C (93.0 F)
1977	36.7 C (98.1 F)
1978	34.4 C (93.9 F)
1979	37.8 C (100.0 F)
1980	36.1 C (97.0 F)
1981	35.6 C (96.1 F)
1982	34.4 C (93.9 F)
1983	35.6 C (96.1 F)
1984	37.8 C (100.0 F)
1985	38.9 C (102.0 F)
1986	36.7 C (98.1 F)
1987	36.7 C (98.1 F)
1988	40.0 C (104.0 F)
1989	34.4 C (93.9 F)
1990	40.0 C (104.0 F)
1991	35.6 C (96.1 F)
1992	36.7 C (98.1 F)
1993	32.2 C (90.0 F)
1994	40.0 C (104.0 F)
1995	34.4 C (93.9 F)
1996	37.2 C (99.0 F)
1997	34.4 C (93.9 F)
1998	37.8 C (100.0 F)
1999	36.7 C (98.1 F)
2000	35.6 C (96.1 F)
2001	36.7 C (98.1 F)
2002	38.3 C (100.9 F)
2003	38.3 C (100.9 F)
2004	37.2 C (99.0 F)
2005	37.2 C (99.0 F)
2006	36.7 C (98.1 F)
2007	29.4 C (84.9 F)

Coldest night (TNn)

The coldest night of the year at Wellpinit, 1923 to 2007. The record is -34.4 C (-29.9 F) in 1989, marked on the chart; the median year is -18.9 C (-2.0 F).

Coldest night (TNn) at Wellpinit by year
Year	Coldest night (TNn)
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
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	-16.1 C (3.0 F)
1959	-23.3 C (-9.9 F)
1960	-17.8 C (0.0 F)
1961	-20.6 C (-5.1 F)
1962	-23.9 C (-11.0 F)
1963	-24.4 C (-11.9 F)
1964	-30.0 C (-22.0 F)
1965	-15.6 C (3.9 F)
1966	-11.1 C (12.0 F)
1967	-10.6 C (12.9 F)
1968	-33.9 C (-29.0 F)
1969	-26.7 C (-16.1 F)
1970	-18.9 C (-2.0 F)
1971	-19.4 C (-2.9 F)
1972	-24.4 C (-11.9 F)
1973	-19.4 C (-2.9 F)
1974	-22.8 C (-9.0 F)
1975	-23.9 C (-11.0 F)
1976	-17.2 C (1.0 F)
1977	-16.1 C (3.0 F)
1978	-27.8 C (-18.0 F)
1979	-25.6 C (-14.1 F)
1980	-22.2 C (-8.0 F)
1981	-17.8 C (0.0 F)
1982	-24.4 C (-11.9 F)
1983	-22.2 C (-8.0 F)
1984	-20.0 C (-4.0 F)
1985	-22.2 C (-8.0 F)
1986	-10.0 C (14.0 F)
1987	-13.3 C (8.1 F)
1988	-15.6 C (3.9 F)
1989	-34.4 C (-29.9 F)
1990	-17.8 C (0.0 F)
1991	-8.9 C (16.0 F)
1992	-15.6 C (3.9 F)
1993	-20.0 C (-4.0 F)
1994	-16.7 C (1.9 F)
1995	-11.1 C (12.0 F)
1996	-22.2 C (-8.0 F)
1997	-16.1 C (3.0 F)
1998	-20.0 C (-4.0 F)
1999	-12.2 C (10.0 F)
2000	-15.0 C (5.0 F)
2001	-13.3 C (8.1 F)
2002	-14.4 C (6.1 F)
2003	-13.9 C (7.0 F)
2004	-14.4 C (6.1 F)
2005	-23.3 C (-9.9 F)
2006	-18.9 C (-2.0 F)
2007	-16.7 C (1.9 F)

Wettest day (Rx1day)

The wettest day of the year at Wellpinit, 1923 to 2007. The record is 63.5 mm (2.5 in) in 1964, marked on the chart; the median year is 30.5 mm (1.2 in).

Wettest day (Rx1day) at Wellpinit by year
Year	Wettest day (Rx1day)
1923	33.0 mm (1.3 in)
1924	26.7 mm (1.1 in)
1925	26.4 mm (1.0 in)
1926	30.5 mm (1.2 in)
1927	27.9 mm (1.1 in)
1928	17.8 mm (0.7 in)
1929	21.8 mm (0.9 in)
1930	21.8 mm (0.9 in)
1931	37.1 mm (1.5 in)
1932	33.0 mm (1.3 in)
1933	26.9 mm (1.1 in)
1934	37.6 mm (1.5 in)
1935	23.9 mm (0.9 in)
1936	35.1 mm (1.4 in)
1937	36.6 mm (1.4 in)
1938	38.1 mm (1.5 in)
1939	21.8 mm (0.9 in)
1940	36.8 mm (1.4 in)
1941	23.4 mm (0.9 in)
1942	25.4 mm (1.0 in)
1943	25.1 mm (1.0 in)
1944	35.6 mm (1.4 in)
1945	27.2 mm (1.1 in)
1946	24.1 mm (0.9 in)
1947	29.7 mm (1.2 in)
1948	32.5 mm (1.3 in)
1949	24.9 mm (1.0 in)
1950	25.9 mm (1.0 in)
1951	38.9 mm (1.5 in)
1952	19.8 mm (0.8 in)
1953	35.3 mm (1.4 in)
1954	33.0 mm (1.3 in)
1955	21.1 mm (0.8 in)
1956	27.4 mm (1.1 in)
1957	43.9 mm (1.7 in)
1958	23.4 mm (0.9 in)
1959	22.9 mm (0.9 in)
1960	24.1 mm (0.9 in)
1961	27.7 mm (1.1 in)
1962	36.3 mm (1.4 in)
1963	22.6 mm (0.9 in)
1964	63.5 mm (2.5 in)
1965	30.2 mm (1.2 in)
1966	36.3 mm (1.4 in)
1967	45.2 mm (1.8 in)
1968	30.5 mm (1.2 in)
1969	23.1 mm (0.9 in)
1970	24.4 mm (1.0 in)
1971	19.8 mm (0.8 in)
1972	34.3 mm (1.4 in)
1973	29.2 mm (1.1 in)
1974	33.0 mm (1.3 in)
1975	29.0 mm (1.1 in)
1976	31.0 mm (1.2 in)
1977	29.0 mm (1.1 in)
1978	38.4 mm (1.5 in)
1979	26.2 mm (1.0 in)
1980	26.4 mm (1.0 in)
1981	26.7 mm (1.1 in)
1982	36.8 mm (1.4 in)
1983	41.7 mm (1.6 in)
1984	37.3 mm (1.5 in)
1985	33.0 mm (1.3 in)
1986	33.8 mm (1.3 in)
1987	33.8 mm (1.3 in)
1988	33.0 mm (1.3 in)
1989	37.3 mm (1.5 in)
1990	40.6 mm (1.6 in)
1991	28.2 mm (1.1 in)
1992	25.4 mm (1.0 in)
1993	31.0 mm (1.2 in)
1994	20.1 mm (0.8 in)
1995	36.3 mm (1.4 in)
1996	59.2 mm (2.3 in)
1997	28.2 mm (1.1 in)
1998	46.2 mm (1.8 in)
1999	57.7 mm (2.3 in)
2000	39.9 mm (1.6 in)
2001	32.8 mm (1.3 in)
2002	36.6 mm (1.4 in)
2003	27.4 mm (1.1 in)
2004	63.5 mm (2.5 in)
2005	20.3 mm (0.8 in)
2006	57.2 mm (2.3 in)
2007	25.4 mm (1.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Wellpinit, 1923 to 2007. The record is 88.9 mm (3.5 in) in 2004, marked on the chart; the median year is 48.3 mm (1.9 in).

Wettest five days (Rx5day) at Wellpinit by year
Year	Wettest five days (Rx5day)
1923	33.0 mm (1.3 in)
1924	50.9 mm (2.0 in)
1925	38.9 mm (1.5 in)
1926	48.3 mm (1.9 in)
1927	85.3 mm (3.4 in)
1928	26.0 mm (1.0 in)
1929	34.3 mm (1.4 in)
1930	42.7 mm (1.7 in)
1931	74.2 mm (2.9 in)
1932	48.8 mm (1.9 in)
1933	45.7 mm (1.8 in)
1934	57.0 mm (2.2 in)
1935	29.1 mm (1.1 in)
1936	43.7 mm (1.7 in)
1937	63.7 mm (2.5 in)
1938	50.3 mm (2.0 in)
1939	22.5 mm (0.9 in)
1940	48.8 mm (1.9 in)
1941	49.6 mm (2.0 in)
1942	45.4 mm (1.8 in)
1943	35.3 mm (1.4 in)
1944	50.1 mm (2.0 in)
1945	43.7 mm (1.7 in)
1946	40.7 mm (1.6 in)
1947	47.0 mm (1.9 in)
1948	51.3 mm (2.0 in)
1949	34.8 mm (1.4 in)
1950	52.4 mm (2.1 in)
1951	56.7 mm (2.2 in)
1952	46.7 mm (1.8 in)
1953	54.6 mm (2.1 in)
1954	47.0 mm (1.9 in)
1955	45.2 mm (1.8 in)
1956	47.3 mm (1.9 in)
1957	65.7 mm (2.6 in)
1958	51.8 mm (2.0 in)
1959	53.4 mm (2.1 in)
1960	67.8 mm (2.7 in)
1961	49.7 mm (2.0 in)
1962	36.8 mm (1.4 in)
1963	35.0 mm (1.4 in)
1964	63.8 mm (2.5 in)
1965	61.9 mm (2.4 in)
1966	52.6 mm (2.1 in)
1967	50.8 mm (2.0 in)
1968	57.4 mm (2.3 in)
1969	54.5 mm (2.1 in)
1970	39.3 mm (1.5 in)
1971	36.6 mm (1.4 in)
1972	54.7 mm (2.2 in)
1973	64.2 mm (2.5 in)
1974	40.7 mm (1.6 in)
1975	44.7 mm (1.8 in)
1976	43.4 mm (1.7 in)
1977	66.8 mm (2.6 in)
1978	48.1 mm (1.9 in)
1979	30.7 mm (1.2 in)
1980	54.1 mm (2.1 in)
1981	36.1 mm (1.4 in)
1982	51.1 mm (2.0 in)
1983	65.8 mm (2.6 in)
1984	43.7 mm (1.7 in)
1985	47.5 mm (1.9 in)
1986	36.8 mm (1.4 in)
1987	65.5 mm (2.6 in)
1988	52.1 mm (2.1 in)
1989	43.4 mm (1.7 in)
1990	64.7 mm (2.5 in)
1991	47.5 mm (1.9 in)
1992	45.4 mm (1.8 in)
1993	35.8 mm (1.4 in)
1994	23.9 mm (0.9 in)
1995	47.7 mm (1.9 in)
1996	78.9 mm (3.1 in)
1997	48.5 mm (1.9 in)
1998	73.9 mm (2.9 in)
1999	67.1 mm (2.6 in)
2000	59.7 mm (2.4 in)
2001	35.1 mm (1.4 in)
2002	58.7 mm (2.3 in)
2003	47.3 mm (1.9 in)
2004	88.9 mm (3.5 in)
2005	22.4 mm (0.9 in)
2006	57.2 mm (2.3 in)
2007	36.8 mm (1.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Wellpinit, 1923 to 2007. The record is 87 days in 1928, marked on the chart; the median year is 36 days.

Longest dry spell (CDD) at Wellpinit by year
Year	Longest dry spell (CDD)
1923	36 days
1924	71 days
1925	76 days
1926	46 days
1927	52 days
1928	87 days
1929	33 days
1930	36 days
1931	36 days
1932	27 days
1933	23 days
1934	47 days
1935	27 days
1936	27 days
1937	24 days
1938	29 days
1939	2 days
1940	8 days
1941	29 days
1942	21 days
1943	37 days
1944	56 days
1945	31 days
1946	43 days
1947	28 days
1948	33 days
1949	50 days
1950	41 days
1951	34 days
1952	35 days
1953	33 days
1954	29 days
1955	46 days
1956	30 days
1957	37 days
1958	27 days
1959	37 days
1960	47 days
1961	38 days
1962	21 days
1963	31 days
1964	34 days
1965	48 days
1966	40 days
1967	58 days
1968	36 days
1969	68 days
1970	32 days
1971	43 days
1972	29 days
1973	33 days
1974	51 days
1975	32 days
1976	39 days
1977	41 days
1978	36 days
1979	43 days
1980	38 days
1981	67 days
1982	20 days
1983	29 days
1984	48 days
1985	48 days
1986	50 days
1987	69 days
1988	73 days
1989	34 days
1990	30 days
1991	23 days
1992	57 days
1993	57 days
1994	41 days
1995	18 days
1996	31 days
1997	24 days
1998	46 days
1999	61 days
2000	53 days
2001	32 days
2002	70 days
2003	32 days
2004	19 days
2005	38 days
2006	34 days
2007	30 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

23 years with a frost

Across 23 years with a frost, the median last spring frost at Wellpinit falls on 11 May and the median first autumn frost on 4 October, which leaves a median of 139 days between them.

Frost dates and growing season at Wellpinit
Measure	Median, all years	Earliest period	Recent period (1960 to 1999)	Recent against earliest	Fitted trend
Last spring frost	11 May	n/a	11 May	n/a	n/a
First autumn frost	4 October	n/a	4 October	n/a	n/a
Growing days	139 days	n/a	139 days	n/a	n/a

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

56 years, 1924 to 1999

A day with at least 29.4 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 58.6 mm (2.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Wellpinit: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	29.4 mm (1.2 in)
5 years	36.2 mm (1.4 in)
10 years	41.1 mm (1.6 in)
25 years	47.8 mm (1.9 in)
50 years	53.1 mm (2.1 in)
100 years	58.6 mm (2.3 in)	Longer than the 56 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, 56 years of values from 1924 to 1999.

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: 59.2 mm (2.3 in) in 1996; 57.7 mm (2.3 in) in 1999; 45.2 mm (1.8 in) in 1967.

Download the Data

Data for Wellpinit standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Wellpinit 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).