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
Record highRecord low2026 daily maximum2026 daily minimum
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
Year with most
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.
When Benson set new all-time records
Date
Kind
Detail
1949-01-04
Record low maximum temperature
Record low maximum temperature 0.0 C (32.0 F)
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
Complete yearUnder 90 percent of days
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.
Cooler than the station meanWarmer than the station mean
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.