Nespelem 2 S Weather Records (USC00455832)

Record envelope, standing records and threshold days for Nespelem 2 S (USC00455832), Washington, United States, with 77 years of record.

Key Facts for Nespelem 2 S

Nespelem 2 S (USC00455832) is a weather station in Washington, United States at 48.13 latitude and -118.98 longitude, 576 m (1,890 ft) above sea level.
The station reports from 1915 to 1991, 77 years of record.
1,464 records set at Nespelem 2 S still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Nespelem 2 S set a daily record precipitation of 15.5 mm (0.6 in) on 19 May 1991.

About the Station

Location: Washington, United States, 48.13 latitude, -118.98 longitude.
Elevation: 576 m (1,890 ft).
Period of record: 1915 to 1991, 77 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 Nespelem 2 S. 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 Nespelem 2 S, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	15.6 C (60.1 F)	-36.1 C (-33.0 F)	n/a	n/a
Feb	18.9 C (66.0 F)	-34.4 C (-29.9 F)	n/a	n/a
Mar	25.0 C (77.0 F)	-22.2 C (-8.0 F)	n/a	n/a
Apr	33.9 C (93.0 F)	-12.8 C (9.0 F)	n/a	n/a
May	36.1 C (97.0 F)	-8.3 C (17.1 F)	n/a	n/a
Jun	38.3 C (100.9 F)	-2.2 C (28.0 F)	n/a	n/a
Jul	41.7 C (107.1 F)	-1.1 C (30.0 F)	n/a	n/a
Aug	43.3 C (109.9 F)	-1.7 C (28.9 F)	n/a	n/a
Sep	38.9 C (102.0 F)	-8.3 C (17.1 F)	n/a	n/a
Oct	31.1 C (88.0 F)	-14.4 C (6.1 F)	n/a	n/a
Nov	21.1 C (70.0 F)	-27.8 C (-18.0 F)	n/a	n/a
Dec	14.4 C (57.9 F)	-30.6 C (-23.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Nespelem 2 S still stand. 1936 holds the most, with 46.

Standing records at Nespelem 2 S by the year they were set
Year set	Standing records
1915	12
1916	20
1917	17
1918	16
1919	40
1920	17
1921	18
1922	30
1923	21
1924	20
1925	25
1926	20
1927	21
1928	12
1929	16
1930	22
1931	13
1932	14
1933	24
1934	28
1935	3
1936	46
1937	22
1938	7
1939	29
1940	13
1941	21
1942	10
1943	21
1944	21
1945	26
1946	9
1947	23
1948	20
1949	24
1950	37
1951	29
1952	16
1953	22
1954	16
1955	28
1956	12
1957	18
1958	15
1959	15
1960	29
1961	25
1962	18
1963	20
1964	13
1965	16
1966	20
1967	21
1968	17
1969	13
1970	13
1971	25
1972	32
1973	12
1974	20
1975	18
1976	12
1977	21
1978	4
1979	16
1980	15
1981	20
1982	23
1983	20
1984	19
1985	23
1986	12
1987	27
1988	15
1989	5
1990	3
1991	8

All-Time Record Progression

10 new records

10 all-time records were set at Nespelem 2 S between 20 July 1947 and 11 February 1985. Each dot is a new record.

When Nespelem 2 S set new all-time records
Date	Kind	Detail
1947-07-20	Record high minimum temperature	Record high minimum temperature 26.1 C (79.0 F)
1948-08-23	Record daily precipitation	Record daily precipitation 39.9 mm (1.6 in)
1950-01-18	Record low minimum temperature	Record low minimum temperature -34.4 C (-29.9 F)
1950-01-29	Record low minimum temperature	Record low minimum temperature -35.0 C (-31.0 F)
1950-01-30	Record low minimum temperature	Record low minimum temperature -36.1 C (-33.0 F)
1958-07-06	Record daily precipitation	Record daily precipitation 55.9 mm (2.2 in)
1961-08-04	Record high maximum temperature	Record high maximum temperature 43.3 C (109.9 F)
1968-12-30	Record low maximum temperature	Record low maximum temperature -23.3 C (-9.9 F)
1971-12-08	Record daily snowfall	Record daily snowfall 27.4 cm (10.8 in)
1985-02-11	Record snow depth	Record snow depth 55.9 cm (22.0 in)

Wettest Day of Each Month

Jul: 55.9 mm (2.2 in)

The wettest day on record for each calendar month at Nespelem 2 S. The most was 55.9 mm (2.2 in) on 6 July 1958.

Record daily precipitation for each month at Nespelem 2 S
Month	Record daily precipitation (mm)	Date
Jan	35.1 mm (1.4 in)	15 January 1945
Feb	35.8 mm (1.4 in)	11 February 1916
Mar	35.3 mm (1.4 in)	29 March 1983
Apr	31.8 mm (1.3 in)	12 April 1944
May	49.0 mm (1.9 in)	18 May 1972
Jun	36.8 mm (1.4 in)	3 June 1936
Jul	55.9 mm (2.2 in)	6 July 1958
Aug	39.9 mm (1.6 in)	23 August 1948
Sep	29.5 mm (1.2 in)	13 September 1980
Oct	39.4 mm (1.6 in)	23 October 1943
Nov	30.5 mm (1.2 in)	15 November 1915
Dec	22.9 mm (0.9 in)	2 December 1926

Period of Record Coverage

1915 to 1991

77 years of record at Nespelem 2 S, 1915 to 1991. 39 years have data for under 90 percent of days and are left out of rankings: 1915, 1916, 1918, 1919, 1926, 1935, 1937, 1938 and others.

Days with data per year at Nespelem 2 S
Year	Days with data	Share of year	Complete
1915	265	73%	No
1916	321	88%	No
1917	364	100%	Yes
1918	298	82%	No
1919	319	87%	No
1920	363	99%	Yes
1921	364	100%	Yes
1922	362	99%	Yes
1923	364	100%	Yes
1924	365	100%	Yes
1925	365	100%	Yes
1926	291	80%	No
1927	357	98%	Yes
1928	362	99%	Yes
1929	364	100%	Yes
1930	363	99%	Yes
1931	352	96%	Yes
1932	359	98%	Yes
1933	359	98%	Yes
1934	362	99%	Yes
1935	179	49%	No
1936	360	98%	Yes
1937	327	90%	No
1938	210	58%	No
1939	360	99%	Yes
1940	358	98%	Yes
1941	364	100%	Yes
1942	360	99%	Yes
1943	331	91%	Yes
1944	312	85%	No
1945	311	85%	No
1946	302	83%	No
1947	268	73%	No
1948	321	88%	No
1949	344	94%	Yes
1950	350	96%	Yes
1951	345	95%	Yes
1952	350	96%	Yes
1953	327	90%	No
1954	340	93%	Yes
1955	349	96%	Yes
1956	353	96%	Yes
1957	354	97%	Yes
1958	347	95%	Yes
1959	359	98%	Yes
1960	361	99%	Yes
1961	358	98%	Yes
1962	362	99%	Yes
1963	365	100%	Yes
1964	341	93%	Yes
1965	340	93%	Yes
1966	295	81%	No
1967	317	87%	No
1968	325	89%	No
1969	288	79%	No
1970	265	73%	No
1971	270	74%	No
1972	329	90%	No
1973	300	82%	No
1974	298	82%	No
1975	310	85%	No
1976	317	87%	No
1977	276	76%	No
1978	290	79%	No
1979	320	88%	No
1980	324	89%	No
1981	311	85%	No
1982	342	94%	Yes
1983	308	84%	No
1984	299	82%	No
1985	292	80%	No
1986	273	75%	No
1987	270	74%	No
1988	260	71%	No
1989	249	68%	No
1990	127	35%	No
1991	75	21%	No

Latest Records

Latest records at Nespelem 2 S
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
19 May 1991	Nespelem 2 S, US	daily rain	15.5 mm (0.6 in)	1.3 mm (0.05 in)	33 years	19 of 100 (Routine)
12 May 1991	Nespelem 2 S, US	daily rain	10.7 mm (0.4 in)	5.1 mm (0.20 in)	73 years	20 of 100 (Routine)
8 May 1991	Nespelem 2 S, US	daily rain	10.7 mm (0.4 in)	8.2 mm (0.32 in)	65 years	20 of 100 (Routine)
21 April 1991	Nespelem 2 S, US	daily high min	11.1 C (52.0 F)	2.2 C (4.0 F)	48 years	26 of 100 (Routine)
5 April 1991	Nespelem 2 S, US	daily high min	8.9 C (48.0 F)	1.1 C (2.0 F)	18 years	14 of 100 (Routine)
1 April 1991	Nespelem 2 S, US	daily high min	7.8 C (46.0 F)	0.6 C (1.1 F)	76 years	30 of 100 (Routine)
1 March 1991	Nespelem 2 S, US	daily rain	20.3 mm (0.8 in)	1.0 mm (0.04 in)	8 years	11 of 100 (Routine)
19 February 1991	Nespelem 2 S, US	daily high max	12.2 C (54.0 F)	0.5 C (0.9 F)	64 years	27 of 100 (Routine)
19 February 1991	Nespelem 2 S, US	daily high min	5.0 C (41.0 F)	1.1 C (2.0 F)	32 years	17 of 100 (Routine)
15 February 1991	Nespelem 2 S, US	daily high min	4.4 C (39.9 F)	1.1 C (2.0 F)	8 years	10 of 100 (Routine)
8 February 1991	Nespelem 2 S, US	daily high min (Tie)	2.8 C (37.0 F)	tie	56 years	6 of 100 (Routine)
5 February 1991	Nespelem 2 S, US	daily high min	5.6 C (42.1 F)	3.9 C (7.0 F)	45 years	26 of 100 (Routine)
5 February 1991	Nespelem 2 S, US	daily high max (Tie)	12.2 C (54.0 F)	tie	24 years	3 of 100 (Routine)
4 February 1991	Nespelem 2 S, US	daily high min	3.9 C (39.0 F)	2.8 C (5.0 F)	48 years	25 of 100 (Routine)
4 February 1991	Nespelem 2 S, US	daily rain	10.4 mm (0.4 in)	0.5 mm (0.02 in)	53 years	20 of 100 (Routine)
18 January 1991	Nespelem 2 S, US	daily high min (Tie)	0.0 C (32.0 F)	tie	45 years	5 of 100 (Routine)
22 August 1990	Nespelem 2 S, US	daily rain	5.8 mm (0.23 in)	0.7 mm (0.03 in)	12 years	11 of 100 (Routine)
2 April 1990	Nespelem 2 S, US	daily high max	23.3 C (73.9 F)	0.5 C (0.9 F)	60 years	26 of 100 (Routine)
1 April 1990	Nespelem 2 S, US	daily high max (Tie)	22.2 C (72.0 F)	tie	3 years	1 of 100 (Routine)
20 February 1990	Nespelem 2 S, US	daily low min (Tie)	-22.8 C (-9.0 F)	tie	68 years	6 of 100 (Routine)

Climate Trend

38 complete years, 1917 to 1982

One stripe for each of 38 complete years at Nespelem 2 S, 1917 to 1982. Blue stripes are years cooler than the station's own mean of 8.2 C (46.8 F); red stripes are warmer. The coolest year was 1922, at 6.4 C (43.5 F), and the warmest was 1934, at 9.9 C (49.8 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at Nespelem 2 S as warming stripes, 1917 to 1982
Year	Annual mean temperature	Difference from the station mean
1917	7.0 C	-1.20 C
1920	7.8 C	-0.39 C
1921	7.4 C	-0.76 C
1922	6.4 C	-1.81 C
1923	8.1 C	-0.14 C
1924	8.3 C	+0.07 C
1925	9.2 C	+1.01 C
1927	7.4 C	-0.81 C
1928	8.4 C	+0.18 C
1929	6.7 C	-1.50 C
1930	7.9 C	-0.29 C
1931	8.3 C	+0.14 C
1932	7.7 C	-0.47 C
1933	7.6 C	-0.56 C
1934	9.9 C	+1.69 C
1936	8.1 C	-0.12 C
1939	9.4 C	+1.24 C
1940	9.7 C	+1.45 C
1941	9.7 C	+1.53 C
1942	8.5 C	+0.30 C
1949	7.4 C	-0.81 C
1950	6.9 C	-1.27 C
1951	7.6 C	-0.57 C
1952	8.3 C	+0.08 C
1954	8.1 C	-0.14 C
1955	6.9 C	-1.35 C
1956	7.8 C	-0.42 C
1958	9.8 C	+1.55 C
1959	8.1 C	-0.14 C
1960	8.6 C	+0.40 C
1961	8.7 C	+0.47 C
1962	8.7 C	+0.45 C
1963	9.1 C	+0.88 C
1964	7.7 C	-0.46 C
1965	8.9 C	+0.65 C
1967	9.9 C	+1.65 C
1972	8.2 C	+0.04 C
1982	7.7 C	-0.46 C

The fitted trend in annual mean temperature here over 1917 to 1982 is 0.13 C (-0.04 to 0.31) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.1 to 0.6) per decade. The slope is a straight line fitted to 38 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Nespelem 2 S
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.13 C (-0.04 to 0.31) per decade	0.2 F (-0.1 to 0.6) per decade	1917 to 1982	38	Not clearly different from zero
Mean daily maximum	0.2 C (0.1 to 0.4) per decade	0.4 F (0.1 to 0.7) per decade	1917 to 1982	38	Rise
Mean daily minimum	0.04 C (-0.16 to 0.24) per decade	0.1 F (-0.3 to 0.4) per decade	1917 to 1982	38	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

1915 to 1991

Yearly extremes at Nespelem 2 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)	1961	38.3 C (100.9 F)	77
Coldest night (TNn)	-36.1 C (-33.0 F)	1950	-23.9 C (-11.0 F)	77
Wettest day (Rx1day)	55.9 mm (2.2 in)	1958	21.6 mm (0.9 in)	77
Wettest five days (Rx5day)	83.3 mm (3.3 in)	1958	35.3 mm (1.4 in)	77
Longest dry spell (CDD)	86 days	1988	43 days	77

Hottest day (TXx)

The hottest day of the year at Nespelem 2 S, 1915 to 1991. The record is 43.3 C (109.9 F) in 1961, marked on the chart; the median year is 38.3 C (100.9 F).

Hottest day (TXx) at Nespelem 2 S by year
Year	Hottest day (TXx)
1915	36.1 C (97.0 F)
1916	35.0 C (95.0 F)
1917	35.6 C (96.1 F)
1918	38.9 C (102.0 F)
1919	37.8 C (100.0 F)
1920	37.8 C (100.0 F)
1921	35.0 C (95.0 F)
1922	35.0 C (95.0 F)
1923	37.2 C (99.0 F)
1924	41.1 C (106.0 F)
1925	38.3 C (100.9 F)
1926	37.8 C (100.0 F)
1927	36.7 C (98.1 F)
1928	40.6 C (105.1 F)
1929	37.8 C (100.0 F)
1930	37.2 C (99.0 F)
1931	38.9 C (102.0 F)
1932	36.7 C (98.1 F)
1933	37.8 C (100.0 F)
1934	39.4 C (102.9 F)
1935	31.7 C (89.1 F)
1936	38.9 C (102.0 F)
1937	37.2 C (99.0 F)
1938	38.3 C (100.9 F)
1939	40.6 C (105.1 F)
1940	38.3 C (100.9 F)
1941	41.1 C (106.0 F)
1942	38.3 C (100.9 F)
1943	36.7 C (98.1 F)
1944	41.7 C (107.1 F)
1945	38.9 C (102.0 F)
1946	40.0 C (104.0 F)
1947	40.6 C (105.1 F)
1948	33.9 C (93.0 F)
1949	37.8 C (100.0 F)
1950	37.2 C (99.0 F)
1951	41.7 C (107.1 F)
1952	38.3 C (100.9 F)
1953	37.2 C (99.0 F)
1954	35.6 C (96.1 F)
1955	36.1 C (97.0 F)
1956	37.2 C (99.0 F)
1957	33.9 C (93.0 F)
1958	37.8 C (100.0 F)
1959	39.4 C (102.9 F)
1960	41.1 C (106.0 F)
1961	43.3 C (109.9 F)
1962	38.3 C (100.9 F)
1963	36.1 C (97.0 F)
1964	37.8 C (100.0 F)
1965	38.3 C (100.9 F)
1966	38.9 C (102.0 F)
1967	40.6 C (105.1 F)
1968	41.1 C (106.0 F)
1969	37.8 C (100.0 F)
1970	38.3 C (100.9 F)
1971	40.6 C (105.1 F)
1972	42.8 C (109.0 F)
1973	38.3 C (100.9 F)
1974	42.2 C (108.0 F)
1975	40.6 C (105.1 F)
1976	38.3 C (100.9 F)
1977	41.7 C (107.1 F)
1978	37.8 C (100.0 F)
1979	40.6 C (105.1 F)
1980	37.8 C (100.0 F)
1981	39.4 C (102.9 F)
1982	38.9 C (102.0 F)
1983	37.8 C (100.0 F)
1984	38.9 C (102.0 F)
1985	38.9 C (102.0 F)
1986	37.8 C (100.0 F)
1987	37.8 C (100.0 F)
1988	38.9 C (102.0 F)
1989	38.3 C (100.9 F)
1990	37.2 C (99.0 F)
1991	25.6 C (78.1 F)

Coldest night (TNn)

The coldest night of the year at Nespelem 2 S, 1915 to 1991. The record is -36.1 C (-33.0 F) in 1950, marked on the chart; the median year is -23.9 C (-11.0 F).

Coldest night (TNn) at Nespelem 2 S by year
Year	Coldest night (TNn)
1915	-12.2 C (10.0 F)
1916	-27.8 C (-18.0 F)
1917	-24.4 C (-11.9 F)
1918	-21.1 C (-6.0 F)
1919	-30.0 C (-22.0 F)
1920	-20.6 C (-5.1 F)
1921	-19.4 C (-2.9 F)
1922	-29.4 C (-20.9 F)
1923	-27.8 C (-18.0 F)
1924	-26.1 C (-15.0 F)
1925	-20.6 C (-5.1 F)
1926	-20.6 C (-5.1 F)
1927	-31.1 C (-24.0 F)
1928	-21.1 C (-6.0 F)
1929	-31.7 C (-25.1 F)
1930	-29.4 C (-20.9 F)
1931	-23.9 C (-11.0 F)
1932	-28.9 C (-20.0 F)
1933	-33.3 C (-27.9 F)
1934	-14.4 C (6.1 F)
1935	-30.0 C (-22.0 F)
1936	-29.4 C (-20.9 F)
1937	-30.0 C (-22.0 F)
1938	-12.2 C (10.0 F)
1939	-27.2 C (-17.0 F)
1940	-16.7 C (1.9 F)
1941	-12.8 C (9.0 F)
1942	-18.3 C (-0.9 F)
1943	-29.4 C (-20.9 F)
1944	-18.3 C (-0.9 F)
1945	-16.7 C (1.9 F)
1946	-17.2 C (1.0 F)
1947	-23.9 C (-11.0 F)
1948	-26.7 C (-16.1 F)
1949	-29.4 C (-20.9 F)
1950	-36.1 C (-33.0 F)
1951	-24.4 C (-11.9 F)
1952	-26.7 C (-16.1 F)
1953	-8.9 C (16.0 F)
1954	-27.2 C (-17.0 F)
1955	-22.2 C (-8.0 F)
1956	-25.6 C (-14.1 F)
1957	-32.2 C (-26.0 F)
1958	-16.1 C (3.0 F)
1959	-21.7 C (-7.1 F)
1960	-21.7 C (-7.1 F)
1961	-23.9 C (-11.0 F)
1962	-27.2 C (-17.0 F)
1963	-20.0 C (-4.0 F)
1964	-29.4 C (-20.9 F)
1965	-17.8 C (0.0 F)
1966	-17.8 C (0.0 F)
1967	-17.8 C (0.0 F)
1968	-30.6 C (-23.1 F)
1969	-31.1 C (-24.0 F)
1970	-26.1 C (-15.0 F)
1971	-22.8 C (-9.0 F)
1972	-26.1 C (-15.0 F)
1973	-20.6 C (-5.1 F)
1974	-22.2 C (-8.0 F)
1975	-20.0 C (-4.0 F)
1976	-14.4 C (6.1 F)
1977	-18.9 C (-2.0 F)
1978	-27.2 C (-17.0 F)
1979	-28.9 C (-20.0 F)
1980	-26.7 C (-16.1 F)
1981	-17.8 C (0.0 F)
1982	-30.6 C (-23.1 F)
1983	-28.3 C (-18.9 F)
1984	-25.0 C (-13.0 F)
1985	-28.3 C (-18.9 F)
1986	-22.8 C (-9.0 F)
1987	-17.8 C (0.0 F)
1988	-21.1 C (-6.0 F)
1989	-22.8 C (-9.0 F)
1990	-22.8 C (-9.0 F)
1991	-13.9 C (7.0 F)

Wettest day (Rx1day)

The wettest day of the year at Nespelem 2 S, 1915 to 1991. The record is 55.9 mm (2.2 in) in 1958, marked on the chart; the median year is 21.6 mm (0.9 in).

Wettest day (Rx1day) at Nespelem 2 S by year
Year	Wettest day (Rx1day)
1915	30.5 mm (1.2 in)
1916	35.8 mm (1.4 in)
1917	15.7 mm (0.6 in)
1918	28.4 mm (1.1 in)
1919	23.1 mm (0.9 in)
1920	21.1 mm (0.8 in)
1921	24.1 mm (0.9 in)
1922	27.4 mm (1.1 in)
1923	23.4 mm (0.9 in)
1924	16.3 mm (0.6 in)
1925	16.3 mm (0.6 in)
1926	35.6 mm (1.4 in)
1927	27.7 mm (1.1 in)
1928	19.8 mm (0.8 in)
1929	20.8 mm (0.8 in)
1930	19.1 mm (0.8 in)
1931	15.0 mm (0.6 in)
1932	20.6 mm (0.8 in)
1933	20.3 mm (0.8 in)
1934	21.1 mm (0.8 in)
1935	23.9 mm (0.9 in)
1936	36.8 mm (1.4 in)
1937	33.3 mm (1.3 in)
1938	12.2 mm (0.5 in)
1939	24.1 mm (0.9 in)
1940	25.7 mm (1.0 in)
1941	30.2 mm (1.2 in)
1942	31.5 mm (1.2 in)
1943	39.4 mm (1.6 in)
1944	31.8 mm (1.3 in)
1945	35.1 mm (1.4 in)
1946	17.0 mm (0.7 in)
1947	21.6 mm (0.9 in)
1948	39.9 mm (1.6 in)
1949	12.4 mm (0.5 in)
1950	34.8 mm (1.4 in)
1951	26.4 mm (1.0 in)
1952	12.7 mm (0.5 in)
1953	13.0 mm (0.5 in)
1954	20.6 mm (0.8 in)
1955	15.5 mm (0.6 in)
1956	20.8 mm (0.8 in)
1957	38.6 mm (1.5 in)
1958	55.9 mm (2.2 in)
1959	24.4 mm (1.0 in)
1960	17.8 mm (0.7 in)
1961	29.5 mm (1.2 in)
1962	18.5 mm (0.7 in)
1963	20.3 mm (0.8 in)
1964	11.7 mm (0.5 in)
1965	21.1 mm (0.8 in)
1966	17.8 mm (0.7 in)
1967	14.0 mm (0.6 in)
1968	22.1 mm (0.9 in)
1969	18.8 mm (0.7 in)
1970	15.5 mm (0.6 in)
1971	22.4 mm (0.9 in)
1972	49.0 mm (1.9 in)
1973	19.8 mm (0.8 in)
1974	22.6 mm (0.9 in)
1975	35.3 mm (1.4 in)
1976	20.8 mm (0.8 in)
1977	18.8 mm (0.7 in)
1978	26.7 mm (1.1 in)
1979	17.8 mm (0.7 in)
1980	29.5 mm (1.2 in)
1981	28.7 mm (1.1 in)
1982	20.3 mm (0.8 in)
1983	35.3 mm (1.4 in)
1984	35.8 mm (1.4 in)
1985	13.5 mm (0.5 in)
1986	20.1 mm (0.8 in)
1987	22.9 mm (0.9 in)
1988	25.1 mm (1.0 in)
1989	18.5 mm (0.7 in)
1990	20.3 mm (0.8 in)
1991	20.3 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Nespelem 2 S, 1915 to 1991. The record is 83.3 mm (3.3 in) in 1958, marked on the chart; the median year is 35.3 mm (1.4 in).

Wettest five days (Rx5day) at Nespelem 2 S by year
Year	Wettest five days (Rx5day)
1915	63.7 mm (2.5 in)
1916	49.0 mm (1.9 in)
1917	31.4 mm (1.2 in)
1918	43.4 mm (1.7 in)
1919	25.4 mm (1.0 in)
1920	47.5 mm (1.9 in)
1921	34.5 mm (1.4 in)
1922	38.1 mm (1.5 in)
1923	47.8 mm (1.9 in)
1924	33.7 mm (1.3 in)
1925	20.8 mm (0.8 in)
1926	36.4 mm (1.4 in)
1927	41.2 mm (1.6 in)
1928	29.7 mm (1.2 in)
1929	26.7 mm (1.1 in)
1930	35.3 mm (1.4 in)
1931	37.8 mm (1.5 in)
1932	30.0 mm (1.2 in)
1933	27.7 mm (1.1 in)
1934	38.9 mm (1.5 in)
1935	34.1 mm (1.3 in)
1936	48.0 mm (1.9 in)
1937	62.3 mm (2.5 in)
1938	22.7 mm (0.9 in)
1939	41.9 mm (1.6 in)
1940	44.0 mm (1.7 in)
1941	41.2 mm (1.6 in)
1942	48.5 mm (1.9 in)
1943	27.4 mm (1.1 in)
1944	46.9 mm (1.8 in)
1945	56.0 mm (2.2 in)
1946	34.2 mm (1.3 in)
1947	30.2 mm (1.2 in)
1948	59.9 mm (2.4 in)
1949	20.4 mm (0.8 in)
1950	44.2 mm (1.7 in)
1951	60.0 mm (2.4 in)
1952	29.5 mm (1.2 in)
1953	23.4 mm (0.9 in)
1954	35.3 mm (1.4 in)
1955	23.9 mm (0.9 in)
1956	29.9 mm (1.2 in)
1957	57.9 mm (2.3 in)
1958	83.3 mm (3.3 in)
1959	39.1 mm (1.5 in)
1960	42.0 mm (1.7 in)
1961	31.0 mm (1.2 in)
1962	26.9 mm (1.1 in)
1963	30.8 mm (1.2 in)
1964	23.3 mm (0.9 in)
1965	36.3 mm (1.4 in)
1966	29.7 mm (1.2 in)
1967	33.9 mm (1.3 in)
1968	49.4 mm (1.9 in)
1969	32.3 mm (1.3 in)
1970	25.4 mm (1.0 in)
1971	35.1 mm (1.4 in)
1972	70.6 mm (2.8 in)
1973	35.8 mm (1.4 in)
1974	26.4 mm (1.0 in)
1975	36.6 mm (1.4 in)
1976	23.6 mm (0.9 in)
1977	40.6 mm (1.6 in)
1978	32.5 mm (1.3 in)
1979	23.8 mm (0.9 in)
1980	35.3 mm (1.4 in)
1981	32.3 mm (1.3 in)
1982	49.0 mm (1.9 in)
1983	61.2 mm (2.4 in)
1984	41.1 mm (1.6 in)
1985	23.6 mm (0.9 in)
1986	35.5 mm (1.4 in)
1987	59.3 mm (2.3 in)
1988	38.8 mm (1.5 in)
1989	29.8 mm (1.2 in)
1990	24.1 mm (0.9 in)
1991	21.9 mm (0.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Nespelem 2 S, 1915 to 1991. The record is 86 days in 1988, marked on the chart; the median year is 43 days.

Longest dry spell (CDD) at Nespelem 2 S by year
Year	Longest dry spell (CDD)
1915	28 days
1916	50 days
1917	54 days
1918	47 days
1919	54 days
1920	39 days
1921	75 days
1922	82 days
1923	32 days
1924	53 days
1925	42 days
1926	34 days
1927	36 days
1928	14 days
1929	74 days
1930	35 days
1931	68 days
1932	32 days
1933	32 days
1934	38 days
1935	26 days
1936	68 days
1937	25 days
1938	74 days
1939	68 days
1940	39 days
1941	20 days
1942	59 days
1943	43 days
1944	54 days
1945	27 days
1946	35 days
1947	20 days
1948	30 days
1949	49 days
1950	48 days
1951	53 days
1952	62 days
1953	39 days
1954	50 days
1955	45 days
1956	28 days
1957	49 days
1958	65 days
1959	55 days
1960	43 days
1961	40 days
1962	28 days
1963	68 days
1964	43 days
1965	34 days
1966	46 days
1967	30 days
1968	64 days
1969	76 days
1970	39 days
1971	43 days
1972	47 days
1973	48 days
1974	40 days
1975	81 days
1976	52 days
1977	39 days
1978	25 days
1979	43 days
1980	30 days
1981	20 days
1982	21 days
1983	28 days
1984	29 days
1985	55 days
1986	58 days
1987	55 days
1988	86 days
1989	52 days
1990	20 days
1991	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.

Frost Dates and Growing Season

38 years with a frost

Across 38 years with a frost, the median last spring frost at Nespelem 2 S falls on 26 May and the median first autumn frost on 20 September, which leaves a median of 117 days between them.

Fitted over all years, the growing season changes by -0.1 days per decade at this station.

Frost dates and growing season at Nespelem 2 S
Measure	Median, all years	Earliest period	Recent period (1928 to 1982)	Recent against earliest	Fitted trend
Last spring frost	26 May	n/a	26 May	n/a	+0.4 days per decade
First autumn frost	20 September	n/a	20 September	n/a	+0.2 days per decade
Growing days	117 days	n/a	112 days	n/a	-0.1 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

64 years, 1917 to 1989

A day with at least 22.8 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 55.0 mm (2.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Nespelem 2 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	22.8 mm (0.9 in)
5 years	30.8 mm (1.2 in)
10 years	36.3 mm (1.4 in)
25 years	43.6 mm (1.7 in)
50 years	49.2 mm (1.9 in)
100 years	55.0 mm (2.2 in)	Longer than the 64 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, 64 years of values from 1917 to 1989.

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: 55.9 mm (2.2 in) in 1958; 49.0 mm (1.9 in) in 1972; 39.9 mm (1.6 in) in 1948.

Download the Data

Data for Nespelem 2 S standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Nespelem 2 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 2026-10-14 (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).