Benson Weather Records (USC00020680)

Record envelope, standing records and threshold days for Benson (USC00020680), Arizona, United States, with 82 years of record.

Key Facts for Benson

Benson (USC00020680) is a weather station in Arizona, United States at 31.97 latitude and -110.30 longitude, 1,119 m (3,671 ft) above sea level.
The station reports from 1894 to 1975, 82 years of record.
1,464 records set at Benson still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Benson set a daily record high minimum temperature of 16.7 C (62.1 F) on 17 May 1975.

About the Station

Location: Arizona, United States, 31.97 latitude, -110.30 longitude.
Elevation: 1,119 m (3,671 ft).
Period of record: 1894 to 1975, 82 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 Benson. 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 Benson, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	29.4 C (84.9 F)	-15.0 C (5.0 F)	n/a	n/a
Feb	31.1 C (88.0 F)	-12.8 C (9.0 F)	n/a	n/a
Mar	35.0 C (95.0 F)	-10.6 C (12.9 F)	n/a	n/a
Apr	38.9 C (102.0 F)	-5.6 C (21.9 F)	n/a	n/a
May	41.7 C (107.1 F)	-5.6 C (21.9 F)	n/a	n/a
Jun	46.7 C (116.1 F)	1.7 C (35.1 F)	n/a	n/a
Jul	44.4 C (111.9 F)	7.8 C (46.0 F)	n/a	n/a
Aug	45.0 C (113.0 F)	5.6 C (42.1 F)	n/a	n/a
Sep	42.2 C (108.0 F)	1.7 C (35.1 F)	n/a	n/a
Oct	39.4 C (102.9 F)	-9.4 C (15.1 F)	n/a	n/a
Nov	33.9 C (93.0 F)	-12.8 C (9.0 F)	n/a	n/a
Dec	28.9 C (84.0 F)	-15.0 C (5.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Benson still stand. 1921 holds the most, with 101.

Standing records at Benson by the year they were set
Year set	Standing records
1894	6
1903	20
1904	14
1905	27
1906	28
1907	19
1908	14
1909	17
1910	26
1911	23
1912	19
1913	16
1914	24
1915	23
1916	37
1917	32
1918	14
1919	9
1920	19
1921	101
1922	35
1923	34
1924	14
1925	31
1926	49
1927	11
1928	16
1929	7
1930	23
1931	25
1932	54
1933	64
1934	36
1935	14
1936	29
1937	37
1938	43
1939	8
1940	12
1941	9
1942	6
1943	15
1944	9
1945	4
1946	10
1947	13
1948	21
1949	19
1950	12
1951	4
1952	9
1953	13
1954	6
1955	14
1956	12
1957	21
1958	26
1959	19
1960	9
1961	11
1962	16
1963	9
1964	16
1965	14
1966	13
1967	6
1968	10
1969	26
1970	9
1971	14
1972	13
1973	12
1974	10
1975	4

All-Time Record Progression

1 new records

1 all-time records were set at Benson between 4 January 1949 and 4 January 1949. Each dot is a new record.

Wettest Day of Each Month

Jan: 141.0 mm (5.6 in)

The wettest day on record for each calendar month at Benson. The most was 141.0 mm (5.6 in) on 29 January 1915.

Record daily precipitation for each month at Benson
Month	Record daily precipitation (mm)	Date
Jan	141.0 mm (5.6 in)	29 January 1915
Feb	35.3 mm (1.4 in)	2 February 1940
Mar	30.5 mm (1.2 in)	9 March 1912
Apr	17.8 mm (0.7 in)	16 April 1958
May	17.8 mm (0.7 in)	15 May 1931
Jun	29.2 mm (1.1 in)	8 June 1905
Jul	61.5 mm (2.4 in)	7 July 1919
Aug	54.4 mm (2.1 in)	4 August 1946
Sep	56.4 mm (2.2 in)	23 September 1929
Oct	30.5 mm (1.2 in)	4 October 1899
Nov	50.8 mm (2.0 in)	22 November 1919
Dec	50.8 mm (2.0 in)	22 December 1926

Period of Record Coverage

1894 to 1974

73 years of record at Benson, 1894 to 1974. 22 years have data for under 90 percent of days and are left out of rankings: 1894, 1903, 1904, 1914, 1918, 1927, 1931, 1932 and others.

Days with data per year at Benson
Year	Days with data	Share of year	Complete
1894	175	48%	No
1903	275	75%	No
1904	305	83%	No
1905	333	91%	Yes
1906	362	99%	Yes
1907	365	100%	Yes
1908	366	100%	Yes
1909	365	100%	Yes
1910	363	99%	Yes
1911	365	100%	Yes
1912	364	99%	Yes
1913	362	99%	Yes
1914	328	90%	No
1915	361	99%	Yes
1916	365	100%	Yes
1917	362	99%	Yes
1918	273	75%	No
1919	355	97%	Yes
1920	332	91%	Yes
1921	352	96%	Yes
1922	359	98%	Yes
1923	365	100%	Yes
1924	364	99%	Yes
1925	360	99%	Yes
1926	364	100%	Yes
1927	325	89%	No
1928	366	100%	Yes
1929	365	100%	Yes
1930	363	99%	Yes
1931	324	89%	No
1932	294	80%	No
1933	329	90%	Yes
1934	334	92%	Yes
1935	363	99%	Yes
1936	361	99%	Yes
1937	272	75%	No
1938	362	99%	Yes
1939	364	100%	Yes
1940	366	100%	Yes
1941	346	95%	Yes
1942	334	92%	Yes
1943	320	88%	No
1944	327	89%	No
1945	277	76%	No
1946	257	70%	No
1947	358	98%	Yes
1948	362	99%	Yes
1949	172	47%	No
1950	135	37%	No
1951	55	15%	No
1952	285	78%	No
1953	361	99%	Yes
1954	359	98%	Yes
1955	335	92%	Yes
1956	366	100%	Yes
1957	364	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	363	99%	Yes
1964	366	100%	Yes
1965	364	100%	Yes
1966	365	100%	Yes
1967	243	67%	No
1968	250	68%	No
1969	179	49%	No
1970	356	98%	Yes
1971	364	100%	Yes
1972	325	89%	No
1973	351	96%	Yes
1974	209	57%	No

Latest Records

Latest records at Benson
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 May 1975	Benson, US	daily high min	16.7 C (62.1 F)	0.6 C (1.1 F)	0 years	9 of 100 (Routine)
16 May 1975	Benson, US	daily high min	17.8 C (64.0 F)	1.1 C (2.0 F)	34 years	21 of 100 (Routine)
27 March 1975	Benson, US	monthly snow depth	5.1 cm (2.0 in)	5.1 cm (2.0 in)	71 years	20 of 100 (Routine)
27 March 1975	Benson, US	monthly snowfall	5.1 cm (2.0 in)	0.8 cm (0.3 in)	56 years	35 of 100 (Notable)
21 March 1975	Benson, US	daily high min	13.9 C (57.0 F)	2.2 C (4.0 F)	16 years	18 of 100 (Routine)
19 February 1975	Benson, US	daily low min	-8.3 C (17.1 F)	1.1 C (2.0 F)	49 years	24 of 100 (Routine)
23 October 1974	Benson, US	daily rain	7.9 mm (0.31 in)	2.8 mm (0.11 in)	79 years	20 of 100 (Routine)
21 October 1974	Benson, US	daily rain	6.6 mm (0.26 in)	0.2 mm (0.01 in)	72 years	20 of 100 (Routine)
21 July 1974	Benson, US	daily low min	10.6 C (51.1 F)	2.2 C (4.0 F)	52 years	31 of 100 (Routine)
19 July 1974	Benson, US	daily rain	40.6 mm (1.6 in)	20.5 mm (0.8 in)	67 years	52 of 100 (Notable)
8 July 1974	Benson, US	daily rain	38.1 mm (1.5 in)	15.2 mm (0.6 in)	71 years	46 of 100 (Notable)
29 June 1974	Benson, US	daily high min	24.4 C (75.9 F)	0.5 C (0.9 F)	0 years	9 of 100 (Routine)
24 June 1974	Benson, US	daily high min	26.1 C (79.0 F)	2.2 C (4.0 F)	17 years	18 of 100 (Routine)
23 June 1974	Benson, US	daily high max	42.2 C (108.0 F)	1.1 C (2.0 F)	44 years	24 of 100 (Routine)
22 June 1974	Benson, US	daily high min	22.8 C (73.0 F)	0.6 C (1.1 F)	48 years	23 of 100 (Routine)
22 June 1974	Benson, US	daily high max	42.8 C (109.0 F)	0.6 C (1.1 F)	41 years	21 of 100 (Routine)
16 June 1974	Benson, US	daily high max (Tie)	40.0 C (104.0 F)	tie	56 years	6 of 100 (Routine)
15 June 1974	Benson, US	daily high max	41.1 C (106.0 F)	0.5 C (0.9 F)	33 years	19 of 100 (Routine)
27 May 1974	Benson, US	daily high max (Tie)	39.4 C (102.9 F)	tie	16 years	3 of 100 (Routine)
26 May 1974	Benson, US	daily high max (Tie)	38.3 C (100.9 F)	tie	36 years	4 of 100 (Routine)

Climate Trend

48 complete years, 1906 to 1973

One stripe for each of 48 complete years at Benson, 1906 to 1973. Blue stripes are years cooler than the station's own mean of 17.0 C (62.6 F); red stripes are warmer. The coolest year was 1921, at 15.0 C (58.9 F), and the warmest was 1943, at 18.4 C (65.1 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Benson as warming stripes, 1906 to 1973
Year	Annual mean temperature	Difference from the station mean
1906	17.2 C	+0.20 C
1907	17.3 C	+0.31 C
1908	17.0 C	+0.03 C
1909	17.2 C	+0.15 C
1910	18.3 C	+1.31 C
1911	17.0 C	+0.03 C
1912	15.7 C	-1.32 C
1913	16.0 C	-1.01 C
1915	16.8 C	-0.23 C
1917	17.2 C	+0.14 C
1919	17.1 C	+0.11 C
1921	15.0 C	-2.04 C
1922	15.5 C	-1.49 C
1923	15.1 C	-1.95 C
1924	16.8 C	-0.17 C
1925	16.6 C	-0.44 C
1926	17.3 C	+0.25 C
1928	17.5 C	+0.48 C
1929	16.9 C	-0.08 C
1930	17.4 C	+0.40 C
1931	17.5 C	+0.46 C
1935	17.3 C	+0.30 C
1936	17.7 C	+0.66 C
1938	18.0 C	+0.97 C
1939	16.8 C	-0.21 C
1940	17.5 C	+0.53 C
1941	17.2 C	+0.20 C
1942	17.6 C	+0.54 C
1943	18.4 C	+1.39 C
1944	17.0 C	+0.02 C
1947	16.8 C	-0.25 C
1948	16.6 C	-0.37 C
1953	16.8 C	-0.23 C
1954	18.0 C	+1.01 C
1956	17.1 C	+0.05 C
1957	17.3 C	+0.29 C
1958	17.5 C	+0.46 C
1959	17.3 C	+0.24 C
1960	17.0 C	-0.03 C
1961	17.1 C	+0.11 C
1962	17.6 C	+0.61 C
1963	17.3 C	+0.27 C
1964	16.2 C	-0.84 C
1965	16.8 C	-0.23 C
1966	17.1 C	+0.06 C
1970	17.0 C	-0.05 C
1971	16.5 C	-0.56 C
1973	16.9 C	-0.14 C

The fitted trend in annual mean temperature here over 1906 to 1973 is 0.05 C (-0.05 to 0.15) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.3) per decade. The slope is a straight line fitted to 48 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Benson
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.05 C (-0.05 to 0.15) per decade	0.1 F (-0.1 to 0.3) per decade	1906 to 1973	48	Not clearly different from zero
Mean daily maximum	-0.05 C (-0.17 to 0.07) per decade	-0.1 F (-0.3 to 0.1) per decade	1906 to 1973	48	Not clearly different from zero
Mean daily minimum	0.14 C (-0.02 to 0.30) per decade	0.26 F (-0.03 to 0.54) per decade	1906 to 1973	48	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

1894 to 1975

Yearly extremes at Benson: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	46.7 C (116.1 F)	1904	41.1 C (106.0 F)	73
Coldest night (TNn)	-15.0 C (5.0 F)	1913	-10.0 C (14.0 F)	74
Wettest day (Rx1day)	141.0 mm (5.6 in)	1915	31.5 mm (1.2 in)	79
Wettest five days (Rx5day)	154.7 mm (6.1 in)	1915	51.9 mm (2.0 in)	79
Longest dry spell (CDD)	180 days	1902	73 days	79

Hottest day (TXx)

The hottest day of the year at Benson, 1894 to 1975. The record is 46.7 C (116.1 F) in 1904, marked on the chart; the median year is 41.1 C (106.0 F).

Hottest day (TXx) at Benson by year
Year	Hottest day (TXx)
1894	43.3 C (109.9 F)
1898	n/a
1899	n/a
1900	n/a
1901	n/a
1902	n/a
1903	42.2 C (108.0 F)
1904	46.7 C (116.1 F)
1905	42.2 C (108.0 F)
1906	40.6 C (105.1 F)
1907	42.2 C (108.0 F)
1908	40.6 C (105.1 F)
1909	41.1 C (106.0 F)
1910	41.7 C (107.1 F)
1911	39.4 C (102.9 F)
1912	41.1 C (106.0 F)
1913	41.1 C (106.0 F)
1914	40.0 C (104.0 F)
1915	40.6 C (105.1 F)
1916	41.1 C (106.0 F)
1917	41.1 C (106.0 F)
1918	40.6 C (105.1 F)
1919	40.6 C (105.1 F)
1920	40.6 C (105.1 F)
1921	41.1 C (106.0 F)
1922	40.0 C (104.0 F)
1923	40.6 C (105.1 F)
1924	42.8 C (109.0 F)
1925	39.4 C (102.9 F)
1926	39.4 C (102.9 F)
1927	41.1 C (106.0 F)
1928	38.9 C (102.0 F)
1929	42.2 C (108.0 F)
1930	42.2 C (108.0 F)
1931	40.6 C (105.1 F)
1932	43.9 C (111.0 F)
1933	45.0 C (113.0 F)
1934	42.2 C (108.0 F)
1935	42.2 C (108.0 F)
1936	43.3 C (109.9 F)
1937	43.3 C (109.9 F)
1938	41.1 C (106.0 F)
1939	40.0 C (104.0 F)
1940	41.1 C (106.0 F)
1941	41.1 C (106.0 F)
1942	42.2 C (108.0 F)
1943	41.7 C (107.1 F)
1944	43.3 C (109.9 F)
1945	41.7 C (107.1 F)
1946	38.9 C (102.0 F)
1947	40.0 C (104.0 F)
1948	42.2 C (108.0 F)
1949	40.0 C (104.0 F)
1950	40.6 C (105.1 F)
1951	40.6 C (105.1 F)
1952	40.0 C (104.0 F)
1953	41.7 C (107.1 F)
1954	42.2 C (108.0 F)
1955	40.6 C (105.1 F)
1956	40.0 C (104.0 F)
1957	40.6 C (105.1 F)
1958	42.2 C (108.0 F)
1959	40.6 C (105.1 F)
1960	41.7 C (107.1 F)
1961	40.6 C (105.1 F)
1962	40.6 C (105.1 F)
1963	40.6 C (105.1 F)
1964	40.6 C (105.1 F)
1965	40.6 C (105.1 F)
1966	39.4 C (102.9 F)
1967	40.6 C (105.1 F)
1968	40.0 C (104.0 F)
1969	43.3 C (109.9 F)
1970	42.8 C (109.0 F)
1971	41.7 C (107.1 F)
1972	40.6 C (105.1 F)
1973	42.2 C (108.0 F)
1974	42.8 C (109.0 F)
1975	n/a

Coldest night (TNn)

The coldest night of the year at Benson, 1894 to 1975. The record is -15.0 C (5.0 F) in 1913, marked on the chart; the median year is -10.0 C (14.0 F).

Coldest night (TNn) at Benson by year
Year	Coldest night (TNn)
1894	-3.3 C (26.1 F)
1898	n/a
1899	n/a
1900	n/a
1901	n/a
1902	n/a
1903	-1.1 C (30.0 F)
1904	-11.1 C (12.0 F)
1905	-12.2 C (10.0 F)
1906	-8.9 C (16.0 F)
1907	-7.8 C (18.0 F)
1908	-6.1 C (21.0 F)
1909	-11.7 C (10.9 F)
1910	-12.2 C (10.0 F)
1911	-11.7 C (10.9 F)
1912	-10.0 C (14.0 F)
1913	-15.0 C (5.0 F)
1914	-5.6 C (21.9 F)
1915	-8.9 C (16.0 F)
1916	-8.3 C (17.1 F)
1917	-10.6 C (12.9 F)
1918	-8.9 C (16.0 F)
1919	-9.4 C (15.1 F)
1920	-8.9 C (16.0 F)
1921	-15.0 C (5.0 F)
1922	-13.3 C (8.1 F)
1923	-12.8 C (9.0 F)
1924	-15.0 C (5.0 F)
1925	-10.0 C (14.0 F)
1926	-10.6 C (12.9 F)
1927	-5.6 C (21.9 F)
1928	-8.9 C (16.0 F)
1929	-10.0 C (14.0 F)
1930	-9.4 C (15.1 F)
1931	-7.8 C (18.0 F)
1932	-11.1 C (12.0 F)
1933	-10.6 C (12.9 F)
1934	-10.6 C (12.9 F)
1935	-11.7 C (10.9 F)
1936	-10.0 C (14.0 F)
1937	-12.8 C (9.0 F)
1938	-8.3 C (17.1 F)
1939	-10.0 C (14.0 F)
1940	-8.3 C (17.1 F)
1941	-7.2 C (19.0 F)
1942	-6.1 C (21.0 F)
1943	-5.6 C (21.9 F)
1944	-8.9 C (16.0 F)
1945	-6.1 C (21.0 F)
1946	-5.0 C (23.0 F)
1947	-9.4 C (15.1 F)
1948	-11.7 C (10.9 F)
1949	-12.2 C (10.0 F)
1950	-6.1 C (21.0 F)
1951	0.0 C (32.0 F)
1952	-7.8 C (18.0 F)
1953	-10.6 C (12.9 F)
1954	-10.6 C (12.9 F)
1955	-10.6 C (12.9 F)
1956	-10.0 C (14.0 F)
1957	-7.2 C (19.0 F)
1958	-8.9 C (16.0 F)
1959	-10.0 C (14.0 F)
1960	-14.4 C (6.1 F)
1961	-10.6 C (12.9 F)
1962	-11.1 C (12.0 F)
1963	-10.6 C (12.9 F)
1964	-11.1 C (12.0 F)
1965	-10.0 C (14.0 F)
1966	-10.6 C (12.9 F)
1967	-11.1 C (12.0 F)
1968	-10.6 C (12.9 F)
1969	-9.4 C (15.1 F)
1970	-9.4 C (15.1 F)
1971	-12.8 C (9.0 F)
1972	-12.8 C (9.0 F)
1973	-8.3 C (17.1 F)
1974	-8.9 C (16.0 F)
1975	-8.3 C (17.1 F)

Wettest day (Rx1day)

The wettest day of the year at Benson, 1894 to 1975. The record is 141.0 mm (5.6 in) in 1915, marked on the chart; the median year is 31.5 mm (1.2 in).

Wettest day (Rx1day) at Benson by year
Year	Wettest day (Rx1day)
1894	22.9 mm (0.9 in)
1898	40.6 mm (1.6 in)
1899	30.5 mm (1.2 in)
1900	25.4 mm (1.0 in)
1901	19.1 mm (0.8 in)
1902	19.8 mm (0.8 in)
1903	25.9 mm (1.0 in)
1904	34.3 mm (1.4 in)
1905	32.0 mm (1.3 in)
1906	22.4 mm (0.9 in)
1907	27.4 mm (1.1 in)
1908	22.1 mm (0.9 in)
1909	22.9 mm (0.9 in)
1910	19.3 mm (0.8 in)
1911	29.0 mm (1.1 in)
1912	30.5 mm (1.2 in)
1913	30.0 mm (1.2 in)
1914	27.9 mm (1.1 in)
1915	141.0 mm (5.6 in)
1916	43.7 mm (1.7 in)
1917	31.8 mm (1.3 in)
1918	25.9 mm (1.0 in)
1919	61.5 mm (2.4 in)
1920	36.3 mm (1.4 in)
1921	34.8 mm (1.4 in)
1922	43.2 mm (1.7 in)
1923	25.4 mm (1.0 in)
1924	25.4 mm (1.0 in)
1925	25.4 mm (1.0 in)
1926	50.8 mm (2.0 in)
1927	25.4 mm (1.0 in)
1928	36.6 mm (1.4 in)
1929	56.4 mm (2.2 in)
1930	45.2 mm (1.8 in)
1931	30.5 mm (1.2 in)
1932	35.6 mm (1.4 in)
1933	24.1 mm (0.9 in)
1934	33.0 mm (1.3 in)
1935	34.3 mm (1.4 in)
1936	26.4 mm (1.0 in)
1937	51.3 mm (2.0 in)
1938	32.0 mm (1.3 in)
1939	33.5 mm (1.3 in)
1940	35.3 mm (1.4 in)
1941	32.3 mm (1.3 in)
1942	52.1 mm (2.1 in)
1943	31.2 mm (1.2 in)
1944	43.2 mm (1.7 in)
1945	39.6 mm (1.6 in)
1946	54.4 mm (2.1 in)
1947	21.1 mm (0.8 in)
1948	22.9 mm (0.9 in)
1949	22.9 mm (0.9 in)
1950	31.5 mm (1.2 in)
1951	24.1 mm (0.9 in)
1952	27.9 mm (1.1 in)
1953	27.9 mm (1.1 in)
1954	31.8 mm (1.3 in)
1955	36.3 mm (1.4 in)
1956	17.8 mm (0.7 in)
1957	17.8 mm (0.7 in)
1958	25.4 mm (1.0 in)
1959	26.2 mm (1.0 in)
1960	20.8 mm (0.8 in)
1961	42.4 mm (1.7 in)
1962	26.2 mm (1.0 in)
1963	43.4 mm (1.7 in)
1964	53.3 mm (2.1 in)
1965	35.3 mm (1.4 in)
1966	35.3 mm (1.4 in)
1967	37.3 mm (1.5 in)
1968	16.0 mm (0.6 in)
1969	21.8 mm (0.9 in)
1970	49.8 mm (2.0 in)
1971	51.8 mm (2.0 in)
1972	35.3 mm (1.4 in)
1973	36.3 mm (1.4 in)
1974	40.6 mm (1.6 in)
1975	6.4 mm (0.25 in)

Wettest five days (Rx5day)

The wettest five days of the year at Benson, 1894 to 1975. The record is 154.7 mm (6.1 in) in 1915, marked on the chart; the median year is 51.9 mm (2.0 in).

Wettest five days (Rx5day) at Benson by year
Year	Wettest five days (Rx5day)
1894	30.8 mm (1.2 in)
1898	52.6 mm (2.1 in)
1899	33.5 mm (1.3 in)
1900	38.1 mm (1.5 in)
1901	25.5 mm (1.0 in)
1902	19.8 mm (0.8 in)
1903	39.4 mm (1.6 in)
1904	54.9 mm (2.2 in)
1905	55.3 mm (2.2 in)
1906	40.2 mm (1.6 in)
1907	51.9 mm (2.0 in)
1908	51.6 mm (2.0 in)
1909	33.5 mm (1.3 in)
1910	25.4 mm (1.0 in)
1911	36.9 mm (1.5 in)
1912	40.2 mm (1.6 in)
1913	44.2 mm (1.7 in)
1914	66.0 mm (2.6 in)
1915	154.7 mm (6.1 in)
1916	62.3 mm (2.5 in)
1917	43.3 mm (1.7 in)
1918	31.3 mm (1.2 in)
1919	81.3 mm (3.2 in)
1920	41.7 mm (1.6 in)
1921	69.0 mm (2.7 in)
1922	66.1 mm (2.6 in)
1923	59.2 mm (2.3 in)
1924	25.4 mm (1.0 in)
1925	35.6 mm (1.4 in)
1926	84.3 mm (3.3 in)
1927	55.5 mm (2.2 in)
1928	76.7 mm (3.0 in)
1929	98.9 mm (3.9 in)
1930	65.1 mm (2.6 in)
1931	57.4 mm (2.3 in)
1932	78.5 mm (3.1 in)
1933	28.2 mm (1.1 in)
1934	55.9 mm (2.2 in)
1935	47.5 mm (1.9 in)
1936	31.7 mm (1.2 in)
1937	90.4 mm (3.6 in)
1938	65.8 mm (2.6 in)
1939	36.5 mm (1.4 in)
1940	41.4 mm (1.6 in)
1941	49.6 mm (2.0 in)
1942	101.7 mm (4.0 in)
1943	41.6 mm (1.6 in)
1944	84.6 mm (3.3 in)
1945	61.0 mm (2.4 in)
1946	66.6 mm (2.6 in)
1947	34.6 mm (1.4 in)
1948	31.7 mm (1.2 in)
1949	23.7 mm (0.9 in)
1950	60.7 mm (2.4 in)
1951	33.0 mm (1.3 in)
1952	54.4 mm (2.1 in)
1953	34.1 mm (1.3 in)
1954	63.1 mm (2.5 in)
1955	64.0 mm (2.5 in)
1956	29.7 mm (1.2 in)
1957	54.7 mm (2.2 in)
1958	65.0 mm (2.6 in)
1959	48.3 mm (1.9 in)
1960	38.8 mm (1.5 in)
1961	49.3 mm (1.9 in)
1962	60.3 mm (2.4 in)
1963	96.0 mm (3.8 in)
1964	110.0 mm (4.3 in)
1965	65.8 mm (2.6 in)
1966	62.2 mm (2.4 in)
1967	51.0 mm (2.0 in)
1968	32.7 mm (1.3 in)
1969	27.4 mm (1.1 in)
1970	82.3 mm (3.2 in)
1971	60.9 mm (2.4 in)
1972	52.9 mm (2.1 in)
1973	43.7 mm (1.7 in)
1974	78.7 mm (3.1 in)
1975	8.9 mm (0.35 in)

Longest dry spell (CDD)

The longest dry spell of the year at Benson, 1894 to 1975. The record is 180 days in 1902, marked on the chart; the median year is 73 days.

Longest dry spell (CDD) at Benson by year
Year	Longest dry spell (CDD)
1894	38 days
1898	40 days
1899	88 days
1900	96 days
1901	125 days
1902	180 days
1903	95 days
1904	48 days
1905	32 days
1906	88 days
1907	55 days
1908	75 days
1909	92 days
1910	65 days
1911	76 days
1912	88 days
1913	55 days
1914	62 days
1915	101 days
1916	72 days
1917	88 days
1918	61 days
1919	34 days
1920	68 days
1921	126 days
1922	93 days
1923	79 days
1924	95 days
1925	150 days
1926	67 days
1927	73 days
1928	76 days
1929	83 days
1930	48 days
1931	53 days
1932	68 days
1933	142 days
1934	89 days
1935	65 days
1936	97 days
1937	55 days
1938	54 days
1939	65 days
1940	28 days
1941	66 days
1942	75 days
1943	96 days
1944	80 days
1945	63 days
1946	48 days
1947	33 days
1948	119 days
1949	68 days
1950	91 days
1951	43 days
1952	47 days
1953	74 days
1954	75 days
1955	83 days
1956	70 days
1957	37 days
1958	45 days
1959	73 days
1960	72 days
1961	119 days
1962	99 days
1963	67 days
1964	97 days
1965	63 days
1966	73 days
1967	55 days
1968	74 days
1969	36 days
1970	84 days
1971	80 days
1972	120 days
1973	79 days
1974	108 days
1975	36 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

48 years with a frost

Across 48 years with a frost, the median last spring frost at Benson falls on 9 April and the median first autumn frost on 1 November, which leaves a median of 207 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 Benson
Measure	Median, all years	Earliest period	Recent period (1929 to 1973)	Recent against earliest	Fitted trend
Last spring frost	9 April	n/a	10 April	n/a	+0.7 days per decade
First autumn frost	1 November	n/a	1 November	n/a	+0.7 days per decade
Growing days	207 days	n/a	206 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

65 years, 1899 to 1973

A day with at least 30.8 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 93.3 mm (3.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Benson: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	30.8 mm (1.2 in)
5 years	42.0 mm (1.7 in)
10 years	51.3 mm (2.0 in)
25 years	65.5 mm (2.6 in)
50 years	78.3 mm (3.1 in)
100 years	93.3 mm (3.7 in)	Longer than the 65 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, 65 years of values from 1899 to 1973.

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: 141.0 mm (5.6 in) in 1915; 61.5 mm (2.4 in) in 1919; 56.4 mm (2.2 in) in 1929.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

Data for Benson standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Benson 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).