Benton City 2 NW Weather Records (USC00450628)

Record envelope, standing records and threshold days for Benton City 2 NW (USC00450628), Washington, United States, with 60 years of record.

Key Facts for Benton City 2 NW

Benton City 2 NW (USC00450628) is a weather station in Washington, United States at 46.28 latitude and -119.50 longitude, 207 m (679 ft) above sea level.
The station reports from 1905 to 1964, 60 years of record.
1,464 records set at Benton City 2 NW still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Benton City 2 NW set a daily record precipitation of 16.5 mm (0.6 in) on 6 December 1963.

About the Station

Location: Washington, United States, 46.28 latitude, -119.50 longitude.
Elevation: 207 m (679 ft).
Period of record: 1905 to 1964, 60 years.
Eligible elements: tmax, tmin, prcp.

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 Benton City 2 NW. 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 Benton City 2 NW, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	19.4 C (66.9 F)	-33.9 C (-29.0 F)	n/a	n/a
Feb	22.2 C (72.0 F)	-30.6 C (-23.1 F)	n/a	n/a
Mar	29.4 C (84.9 F)	-13.3 C (8.1 F)	n/a	n/a
Apr	36.7 C (98.1 F)	-9.4 C (15.1 F)	n/a	n/a
May	39.4 C (102.9 F)	-4.4 C (24.1 F)	n/a	n/a
Jun	41.1 C (106.0 F)	1.1 C (34.0 F)	n/a	n/a
Jul	43.9 C (111.0 F)	3.3 C (37.9 F)	n/a	n/a
Aug	41.1 C (106.0 F)	2.2 C (36.0 F)	n/a	n/a
Sep	38.9 C (102.0 F)	-5.6 C (21.9 F)	n/a	n/a
Oct	33.3 C (91.9 F)	-11.7 C (10.9 F)	n/a	n/a
Nov	24.4 C (75.9 F)	-17.2 C (1.0 F)	n/a	n/a
Dec	24.4 C (75.9 F)	-31.1 C (-24.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Benton City 2 NW still stand. 1906 holds the most, with 59.

Standing records at Benton City 2 NW by the year they were set
Year set	Standing records
1905	39
1906	59
1907	21
1908	24
1909	39
1910	33
1911	16
1912	3
1913	23
1914	24
1915	17
1916	56
1917	37
1918	19
1919	39
1920	15
1921	23
1922	31
1923	18
1924	59
1925	33
1926	34
1927	19
1928	35
1929	41
1930	47
1931	30
1932	40
1933	41
1934	36
1935	32
1936	44
1937	35
1938	13
1939	11
1940	14
1941	5
1942	14
1943	17
1944	12
1945	13
1948	9
1949	22
1950	36
1951	11
1952	21
1953	11
1954	14
1955	27
1956	12
1957	18
1958	17
1959	20
1960	20
1961	21
1962	29
1963	15

All-Time Record Progression

2 new records

2 all-time records were set at Benton City 2 NW between 6 January 1948 and 2 October 1957. Each dot is a new record.

When Benton City 2 NW set new all-time records
Date	Kind	Detail
1948-01-06	Record daily precipitation	Record daily precipitation 27.7 mm (1.1 in)
1957-10-02	Record daily precipitation	Record daily precipitation 50.8 mm (2.0 in)

Wettest Day of Each Month

Oct: 50.8 mm (2.0 in)

The wettest day on record for each calendar month at Benton City 2 NW. The most was 50.8 mm (2.0 in) on 2 October 1957.

Record daily precipitation for each month at Benton City 2 NW
Month	Record daily precipitation (mm)	Date
Jan	27.7 mm (1.1 in)	6 January 1948
Feb	22.6 mm (0.9 in)	2 February 1961
Mar	20.8 mm (0.8 in)	31 March 1922
Apr	16.5 mm (0.6 in)	13 April 1920
May	19.8 mm (0.8 in)	10 May 1961
Jun	23.1 mm (0.9 in)	12 June 1950
Jul	27.4 mm (1.1 in)	29 July 1915
Aug	14.5 mm (0.6 in)	24 August 1920
Sep	26.2 mm (1.0 in)	10 September 1911
Oct	50.8 mm (2.0 in)	2 October 1957
Nov	25.7 mm (1.0 in)	7 November 1906
Dec	22.9 mm (0.9 in)	10 December 1948

Period of Record Coverage

1905 to 1964

60 years of record at Benton City 2 NW, 1905 to 1964. 21 years have data for under 90 percent of days and are left out of rankings: 1907, 1911, 1912, 1919, 1930, 1931, 1936, 1939 and others.

Days with data per year at Benton City 2 NW
Year	Days with data	Share of year	Complete
1905	331	91%	Yes
1906	349	96%	Yes
1907	303	83%	No
1908	362	99%	Yes
1909	360	99%	Yes
1910	353	97%	Yes
1911	262	72%	No
1912	31	8%	No
1913	350	96%	Yes
1914	359	98%	Yes
1915	364	100%	Yes
1916	365	100%	Yes
1917	364	100%	Yes
1918	356	98%	Yes
1919	322	88%	No
1920	362	99%	Yes
1921	359	98%	Yes
1922	350	96%	Yes
1923	355	97%	Yes
1924	356	97%	Yes
1925	361	99%	Yes
1926	355	97%	Yes
1927	351	96%	Yes
1928	356	97%	Yes
1929	360	99%	Yes
1930	324	89%	No
1931	325	89%	No
1932	353	96%	Yes
1933	354	97%	Yes
1934	350	96%	Yes
1935	346	95%	Yes
1936	296	81%	No
1937	345	95%	Yes
1938	336	92%	Yes
1939	289	79%	No
1940	301	82%	No
1941	332	91%	Yes
1942	209	57%	No
1943	303	83%	No
1944	333	91%	Yes
1945	175	48%	No
1946	17	5%	No
1947	14	4%	No
1948	262	72%	No
1949	355	97%	Yes
1950	317	87%	No
1951	321	88%	No
1952	347	95%	Yes
1953	320	88%	No
1954	343	94%	Yes
1955	344	94%	Yes
1956	332	91%	Yes
1957	328	90%	No
1958	331	91%	Yes
1959	332	91%	Yes
1960	342	93%	Yes
1961	318	87%	No
1962	343	94%	Yes
1963	332	91%	Yes
1964	31	8%	No

Latest Records

Latest records at Benton City 2 NW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
6 December 1963	Benton City 2 NW, US	daily rain	16.5 mm (0.6 in)	7.9 mm (0.31 in)	29 years	20 of 100 (Routine)
2 December 1963	Benton City 2 NW, US	daily low max	-2.8 C (27.0 F)	2.2 C (4.0 F)	6 years	10 of 100 (Routine)
26 November 1963	Benton City 2 NW, US	daily high max (Tie)	18.3 C (64.9 F)	tie	0 years	1 of 100 (Routine)
8 November 1963	Benton City 2 NW, US	daily rain	16.5 mm (0.6 in)	6.1 mm (0.24 in)	56 years	20 of 100 (Routine)
6 November 1963	Benton City 2 NW, US	daily rain	5.3 mm (0.21 in)	0.5 mm (0.02 in)	8 years	8 of 100 (Routine)
30 September 1963	Benton City 2 NW, US	daily high max (Tie)	31.1 C (88.0 F)	tie	28 years	3 of 100 (Routine)
29 September 1963	Benton City 2 NW, US	daily high max	32.8 C (91.0 F)	2.2 C (4.0 F)	34 years	19 of 100 (Routine)
28 September 1963	Benton City 2 NW, US	daily high max	32.8 C (91.0 F)	2.2 C (4.0 F)	44 years	22 of 100 (Routine)
13 September 1963	Benton City 2 NW, US	daily high min	14.4 C (57.9 F)	1.6 C (2.9 F)	20 years	15 of 100 (Routine)
10 September 1963	Benton City 2 NW, US	daily high min (Tie)	14.4 C (57.9 F)	tie	22 years	2 of 100 (Routine)
26 July 1963	Benton City 2 NW, US	daily low min (Tie)	8.3 C (46.9 F)	tie	46 years	4 of 100 (Routine)
25 July 1963	Benton City 2 NW, US	daily low max	24.4 C (75.9 F)	0.6 C (1.1 F)	13 years	10 of 100 (Routine)
24 July 1963	Benton City 2 NW, US	daily low max	26.7 C (80.1 F)	0.5 C (0.9 F)	46 years	20 of 100 (Routine)
24 July 1963	Benton City 2 NW, US	daily low min (Tie)	8.3 C (46.9 F)	tie	42 years	4 of 100 (Routine)
23 July 1963	Benton City 2 NW, US	daily low min	5.6 C (42.1 F)	2.2 C (4.0 F)	45 years	24 of 100 (Routine)
23 July 1963	Benton City 2 NW, US	daily low max	25.6 C (78.1 F)	1.6 C (2.9 F)	46 years	22 of 100 (Routine)
8 July 1963	Benton City 2 NW, US	daily rain	4.1 mm (0.16 in)	2.1 mm (0.08 in)	28 years	17 of 100 (Routine)
8 July 1963	Benton City 2 NW, US	daily low max	22.8 C (73.0 F)	0.5 C (0.9 F)	14 years	10 of 100 (Routine)
29 June 1963	Benton City 2 NW, US	daily low max	20.6 C (69.1 F)	0.5 C (0.9 F)	46 years	20 of 100 (Routine)
26 June 1963	Benton City 2 NW, US	daily low min (Tie)	5.6 C (42.1 F)	tie	13 years	2 of 100 (Routine)

Climate Trend

25 complete years, 1908 to 1960

One stripe for each of 25 complete years at Benton City 2 NW, 1908 to 1960. Blue stripes are years cooler than the station's own mean of 11.5 C (52.6 F); red stripes are warmer. The coolest year was 1916, at 9.4 C (48.8 F), and the warmest was 1925, at 13.2 C (55.7 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Benton City 2 NW as warming stripes, 1908 to 1960
Year	Annual mean temperature	Difference from the station mean
1908	12.2 C	+0.69 C
1909	11.3 C	-0.14 C
1910	11.9 C	+0.44 C
1913	10.8 C	-0.68 C
1914	11.8 C	+0.37 C
1915	12.1 C	+0.64 C
1916	9.4 C	-2.10 C
1917	11.5 C	+0.01 C
1918	12.2 C	+0.71 C
1920	11.5 C	+0.06 C
1921	12.0 C	+0.58 C
1922	10.6 C	-0.82 C
1923	12.3 C	+0.86 C
1924	11.8 C	+0.37 C
1925	13.2 C	+1.73 C
1926	12.5 C	+1.06 C
1927	11.2 C	-0.30 C
1928	11.4 C	-0.02 C
1929	10.5 C	-0.99 C
1932	12.0 C	+0.52 C
1933	11.8 C	+0.33 C
1935	11.6 C	+0.16 C
1949	10.4 C	-1.05 C
1955	10.0 C	-1.42 C
1960	10.4 C	-1.02 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

1905 to 1964

Yearly extremes at Benton City 2 NW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.9 C (111.0 F)	1928	40.0 C (104.0 F)	60
Coldest night (TNn)	-33.9 C (-29.0 F)	1930	-16.9 C (1.5 F)	60
Wettest day (Rx1day)	50.8 mm (2.0 in)	1957	16.5 mm (0.6 in)	60
Wettest five days (Rx5day)	61.5 mm (2.4 in)	1957	26.5 mm (1.0 in)	59
Longest dry spell (CDD)	134 days	1949	55 days	60

Hottest day (TXx)

The hottest day of the year at Benton City 2 NW, 1905 to 1964. The record is 43.9 C (111.0 F) in 1928, marked on the chart; the median year is 40.0 C (104.0 F).

Hottest day (TXx) at Benton City 2 NW by year
Year	Hottest day (TXx)
1905	43.3 C (109.9 F)
1906	42.2 C (108.0 F)
1907	39.4 C (102.9 F)
1908	40.0 C (104.0 F)
1909	38.3 C (100.9 F)
1910	38.9 C (102.0 F)
1911	40.6 C (105.1 F)
1912	24.4 C (75.9 F)
1913	38.9 C (102.0 F)
1914	40.0 C (104.0 F)
1915	40.6 C (105.1 F)
1916	37.8 C (100.0 F)
1917	40.0 C (104.0 F)
1918	41.7 C (107.1 F)
1919	40.6 C (105.1 F)
1920	40.6 C (105.1 F)
1921	38.3 C (100.9 F)
1922	42.8 C (109.0 F)
1923	40.0 C (104.0 F)
1924	42.2 C (108.0 F)
1925	41.1 C (106.0 F)
1926	43.3 C (109.9 F)
1927	40.6 C (105.1 F)
1928	43.9 C (111.0 F)
1929	41.7 C (107.1 F)
1930	42.8 C (109.0 F)
1931	42.8 C (109.0 F)
1932	40.6 C (105.1 F)
1933	40.6 C (105.1 F)
1934	42.8 C (109.0 F)
1935	42.8 C (109.0 F)
1936	42.2 C (108.0 F)
1937	40.6 C (105.1 F)
1938	41.1 C (106.0 F)
1939	37.8 C (100.0 F)
1940	38.3 C (100.9 F)
1941	41.7 C (107.1 F)
1942	40.6 C (105.1 F)
1943	38.3 C (100.9 F)
1944	40.0 C (104.0 F)
1945	39.4 C (102.9 F)
1946	32.8 C (91.0 F)
1947	13.3 C (55.9 F)
1948	38.3 C (100.9 F)
1949	38.9 C (102.0 F)
1950	38.3 C (100.9 F)
1951	38.3 C (100.9 F)
1952	39.4 C (102.9 F)
1953	37.8 C (100.0 F)
1954	36.1 C (97.0 F)
1955	39.4 C (102.9 F)
1956	39.4 C (102.9 F)
1957	36.7 C (98.1 F)
1958	40.6 C (105.1 F)
1959	40.6 C (105.1 F)
1960	40.6 C (105.1 F)
1961	40.0 C (104.0 F)
1962	40.0 C (104.0 F)
1963	37.2 C (99.0 F)
1964	11.7 C (53.1 F)

Coldest night (TNn)

The coldest night of the year at Benton City 2 NW, 1905 to 1964. The record is -33.9 C (-29.0 F) in 1930, marked on the chart; the median year is -16.9 C (1.5 F).

Coldest night (TNn) at Benton City 2 NW by year
Year	Coldest night (TNn)
1905	-18.3 C (-0.9 F)
1906	-11.1 C (12.0 F)
1907	-11.1 C (12.0 F)
1908	-15.6 C (3.9 F)
1909	-30.0 C (-22.0 F)
1910	-15.0 C (5.0 F)
1911	-10.6 C (12.9 F)
1912	-12.2 C (10.0 F)
1913	-17.2 C (1.0 F)
1914	-17.2 C (1.0 F)
1915	-13.3 C (8.1 F)
1916	-27.2 C (-17.0 F)
1917	-15.0 C (5.0 F)
1918	-15.0 C (5.0 F)
1919	-31.1 C (-24.0 F)
1920	-12.8 C (9.0 F)
1921	-15.6 C (3.9 F)
1922	-24.4 C (-11.9 F)
1923	-18.9 C (-2.0 F)
1924	-25.0 C (-13.0 F)
1925	-7.8 C (18.0 F)
1926	-21.1 C (-6.0 F)
1927	-22.2 C (-8.0 F)
1928	-16.1 C (3.0 F)
1929	-29.4 C (-20.9 F)
1930	-33.9 C (-29.0 F)
1931	-16.1 C (3.0 F)
1932	-23.9 C (-11.0 F)
1933	-22.8 C (-9.0 F)
1934	-6.7 C (19.9 F)
1935	-20.6 C (-5.1 F)
1936	-22.8 C (-9.0 F)
1937	-27.8 C (-18.0 F)
1938	-12.2 C (10.0 F)
1939	-13.9 C (7.0 F)
1940	-13.3 C (8.1 F)
1941	-9.4 C (15.1 F)
1942	-20.6 C (-5.1 F)
1943	-21.1 C (-6.0 F)
1944	-14.4 C (6.1 F)
1945	-8.3 C (17.1 F)
1946	-0.6 C (30.9 F)
1947	-7.2 C (19.0 F)
1948	-16.7 C (1.9 F)
1949	-22.8 C (-9.0 F)
1950	-30.6 C (-23.1 F)
1951	-17.8 C (0.0 F)
1952	-17.8 C (0.0 F)
1953	-7.2 C (19.0 F)
1954	-25.6 C (-14.1 F)
1955	-12.2 C (10.0 F)
1956	-22.2 C (-8.0 F)
1957	-29.4 C (-20.9 F)
1958	-10.0 C (14.0 F)
1959	-20.0 C (-4.0 F)
1960	-17.2 C (1.0 F)
1961	-16.1 C (3.0 F)
1962	-15.0 C (5.0 F)
1963	-19.4 C (-2.9 F)
1964	-8.3 C (17.1 F)

Wettest day (Rx1day)

The wettest day of the year at Benton City 2 NW, 1905 to 1964. The record is 50.8 mm (2.0 in) in 1957, marked on the chart; the median year is 16.5 mm (0.6 in).

Wettest day (Rx1day) at Benton City 2 NW by year
Year	Wettest day (Rx1day)
1905	19.1 mm (0.8 in)
1906	25.7 mm (1.0 in)
1907	19.1 mm (0.8 in)
1908	15.7 mm (0.6 in)
1909	16.8 mm (0.7 in)
1910	16.3 mm (0.6 in)
1911	26.2 mm (1.0 in)
1912	7.6 mm (0.30 in)
1913	19.3 mm (0.8 in)
1914	14.7 mm (0.6 in)
1915	27.4 mm (1.1 in)
1916	17.8 mm (0.7 in)
1917	17.0 mm (0.7 in)
1918	16.8 mm (0.7 in)
1919	13.2 mm (0.5 in)
1920	16.5 mm (0.6 in)
1921	25.4 mm (1.0 in)
1922	20.8 mm (0.8 in)
1923	14.5 mm (0.6 in)
1924	12.7 mm (0.5 in)
1925	16.5 mm (0.6 in)
1926	17.8 mm (0.7 in)
1927	25.9 mm (1.0 in)
1928	20.3 mm (0.8 in)
1929	9.4 mm (0.37 in)
1930	11.2 mm (0.4 in)
1931	14.7 mm (0.6 in)
1932	16.0 mm (0.6 in)
1933	19.3 mm (0.8 in)
1934	13.7 mm (0.5 in)
1935	14.5 mm (0.6 in)
1936	16.3 mm (0.6 in)
1937	15.7 mm (0.6 in)
1938	22.4 mm (0.9 in)
1939	10.2 mm (0.4 in)
1940	16.5 mm (0.6 in)
1941	22.6 mm (0.9 in)
1942	19.8 mm (0.8 in)
1943	15.7 mm (0.6 in)
1944	15.7 mm (0.6 in)
1945	13.7 mm (0.5 in)
1946	7.6 mm (0.30 in)
1947	5.1 mm (0.20 in)
1948	27.7 mm (1.1 in)
1949	17.8 mm (0.7 in)
1950	23.1 mm (0.9 in)
1951	17.5 mm (0.7 in)
1952	10.7 mm (0.4 in)
1953	23.6 mm (0.9 in)
1954	15.5 mm (0.6 in)
1955	14.7 mm (0.6 in)
1956	16.5 mm (0.6 in)
1957	50.8 mm (2.0 in)
1958	17.3 mm (0.7 in)
1959	16.5 mm (0.6 in)
1960	10.4 mm (0.4 in)
1961	22.6 mm (0.9 in)
1962	12.2 mm (0.5 in)
1963	16.5 mm (0.6 in)
1964	9.9 mm (0.39 in)

Wettest five days (Rx5day)

The wettest five days of the year at Benton City 2 NW, 1905 to 1964. The record is 61.5 mm (2.4 in) in 1957, marked on the chart; the median year is 26.5 mm (1.0 in).

Wettest five days (Rx5day) at Benton City 2 NW by year
Year	Wettest five days (Rx5day)
1905	28.0 mm (1.1 in)
1906	40.2 mm (1.6 in)
1907	27.5 mm (1.1 in)
1908	21.3 mm (0.8 in)
1909	26.5 mm (1.0 in)
1910	19.8 mm (0.8 in)
1911	42.8 mm (1.7 in)
1912	9.6 mm (0.38 in)
1913	20.6 mm (0.8 in)
1914	28.7 mm (1.1 in)
1915	35.5 mm (1.4 in)
1916	35.6 mm (1.4 in)
1917	27.1 mm (1.1 in)
1918	16.8 mm (0.7 in)
1919	25.3 mm (1.0 in)
1920	27.9 mm (1.1 in)
1921	48.3 mm (1.9 in)
1922	23.8 mm (0.9 in)
1923	23.4 mm (0.9 in)
1924	30.9 mm (1.2 in)
1925	28.5 mm (1.1 in)
1926	42.9 mm (1.7 in)
1927	26.4 mm (1.0 in)
1928	33.8 mm (1.3 in)
1929	26.4 mm (1.0 in)
1930	27.2 mm (1.1 in)
1931	25.7 mm (1.0 in)
1932	21.4 mm (0.8 in)
1933	26.5 mm (1.0 in)
1934	30.7 mm (1.2 in)
1935	17.0 mm (0.7 in)
1936	37.9 mm (1.5 in)
1937	20.1 mm (0.8 in)
1938	37.9 mm (1.5 in)
1939	13.2 mm (0.5 in)
1940	28.4 mm (1.1 in)
1941	24.1 mm (0.9 in)
1942	14.3 mm (0.6 in)
1943	26.9 mm (1.1 in)
1944	24.6 mm (1.0 in)
1945	24.7 mm (1.0 in)
1946	7.6 mm (0.30 in)
1947	n/a
1948	44.7 mm (1.8 in)
1949	19.9 mm (0.8 in)
1950	27.2 mm (1.1 in)
1951	45.8 mm (1.8 in)
1952	17.0 mm (0.7 in)
1953	42.4 mm (1.7 in)
1954	16.8 mm (0.7 in)
1955	19.0 mm (0.7 in)
1956	29.0 mm (1.1 in)
1957	61.5 mm (2.4 in)
1958	34.4 mm (1.4 in)
1959	26.0 mm (1.0 in)
1960	24.9 mm (1.0 in)
1961	39.7 mm (1.6 in)
1962	25.6 mm (1.0 in)
1963	26.1 mm (1.0 in)
1964	11.7 mm (0.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Benton City 2 NW, 1905 to 1964. The record is 134 days in 1949, marked on the chart; the median year is 55 days.

Longest dry spell (CDD) at Benton City 2 NW by year
Year	Longest dry spell (CDD)
1905	76 days
1906	52 days
1907	47 days
1908	48 days
1909	71 days
1910	62 days
1911	45 days
1912	13 days
1913	72 days
1914	70 days
1915	43 days
1916	80 days
1917	74 days
1918	41 days
1919	57 days
1920	35 days
1921	55 days
1922	62 days
1923	45 days
1924	78 days
1925	61 days
1926	59 days
1927	97 days
1928	26 days
1929	74 days
1930	48 days
1931	80 days
1932	99 days
1933	39 days
1934	65 days
1935	36 days
1936	48 days
1937	29 days
1938	85 days
1939	53 days
1940	48 days
1941	31 days
1942	92 days
1943	65 days
1944	91 days
1945	64 days
1946	17 days
1947	2 days
1948	39 days
1949	134 days
1950	75 days
1951	53 days
1952	69 days
1953	51 days
1954	68 days
1955	55 days
1956	53 days
1957	42 days
1958	75 days
1959	55 days
1960	46 days
1961	40 days
1962	51 days
1963	69 days
1964	11 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

25 years with a frost

Across 25 years with a frost, the median last spring frost at Benton City 2 NW falls on 29 April and the median first autumn frost on 7 October, which leaves a median of 162 days between them.

Fitted over all years, the growing season changes by +3.7 days per decade at this station.

Frost dates and growing season at Benton City 2 NW
Measure	Median, all years	Earliest period	Recent period (1908 to 1960)	Recent against earliest	Fitted trend
Last spring frost	29 April	n/a	29 April	n/a	+0.2 days per decade
First autumn frost	7 October	n/a	7 October	n/a	+3.9 days per decade
Growing days	162 days	n/a	162 days	n/a	+3.7 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

39 years, 1906 to 1963

A day with at least 16.7 mm (0.7 in) of rain is expected about once in 2 years. A day with at least 44.1 mm (1.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Benton City 2 NW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	16.7 mm (0.7 in)
5 years	21.5 mm (0.8 in)
10 years	25.4 mm (1.0 in)
25 years	31.7 mm (1.2 in)
50 years	37.4 mm (1.5 in)	Longer than the 39 years of record
100 years	44.1 mm (1.7 in)	Longer than the 39 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, 39 years of values from 1906 to 1963.

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: 50.8 mm (2.0 in) in 1957; 27.4 mm (1.1 in) in 1915; 25.9 mm (1.0 in) in 1927.

Download the Data

Data for Benton City 2 NW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Benton City 2 NW 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).