Record envelope, standing records and threshold days for Hilland 2 NW (USC00393857), South Dakota, United States, with 93 years of record.
Key Facts for Hilland 2 NW
Hilland 2 NW (USC00393857) is a weather station in South Dakota, United States at 44.31 latitude and -101.87 longitude, 771 m (2,530 ft) above sea level.
The station reports from 1909 to 2001, 93 years of record.
1,464 records set at Hilland 2 NW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Hilland 2 NW set a monthly record daily precipitation of 38.1 mm (1.5 in) on 8 February 2001.
About the Station
Location: South Dakota, United States, 44.31 latitude, -101.87 longitude.
Elevation: 771 m (2,530 ft).
Period of record: 1909 to 2001, 93 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 Hilland 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 Hilland 2 NW, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
21.1 C (70.0 F)
-37.2 C (-35.0 F)
n/a
n/a
Feb
24.4 C (75.9 F)
-37.8 C (-36.0 F)
n/a
n/a
Mar
31.1 C (88.0 F)
-32.2 C (-26.0 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-19.4 C (-2.9 F)
n/a
n/a
May
41.7 C (107.1 F)
-11.1 C (12.0 F)
n/a
n/a
Jun
43.9 C (111.0 F)
-3.9 C (25.0 F)
n/a
n/a
Jul
46.1 C (115.0 F)
3.3 C (37.9 F)
n/a
n/a
Aug
43.9 C (111.0 F)
0.6 C (33.1 F)
n/a
n/a
Sep
42.2 C (108.0 F)
-7.8 C (18.0 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-20.0 C (-4.0 F)
n/a
n/a
Nov
28.9 C (84.0 F)
-28.3 C (-18.9 F)
n/a
n/a
Dec
22.2 C (72.0 F)
-35.6 C (-32.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Hilland 2 NW still stand. 1936 holds the most, with 78.
Standing records at Hilland 2 NW by the year they were set
Year set
Standing records
1909
14
1910
29
1911
29
1912
11
1913
18
1914
25
1915
14
1916
22
1917
28
1918
23
1919
26
1920
14
1921
35
1922
15
1923
17
1924
21
1925
22
1926
10
1927
9
1928
15
1929
18
1930
20
1931
36
1932
26
1933
34
1934
44
1935
16
1936
78
1937
14
1938
9
1939
22
1940
12
1941
9
1942
13
1943
6
1944
5
1945
17
1946
16
1947
24
1948
19
1949
17
1950
36
1951
24
1952
19
1953
17
1954
12
1955
11
1956
11
1957
12
1958
21
1959
21
1960
13
1961
9
1962
16
1963
15
1964
9
1965
19
1966
10
1967
15
1968
14
1969
12
1970
6
1971
5
1972
17
1973
13
1974
14
1975
6
1976
19
1988
11
1989
29
1990
9
1991
15
1992
26
1993
15
1994
12
1995
17
1996
26
1997
13
1998
12
1999
14
2000
17
All-Time Record Progression
1 new records
1 all-time records were set at Hilland 2 NW between 8 February 2001 and 8 February 2001. Each dot is a new record.
When Hilland 2 NW set new all-time records
Date
Kind
Detail
2001-02-08
Record daily snowfall
Record daily snowfall 35.6 cm (14.0 in)
Wettest Day of Each Month
Aug: 154.9 mm (6.1 in)
The wettest day on record for each calendar month at Hilland 2 NW. The most was 154.9 mm (6.1 in) on 16 August 1930.
Record daily precipitation for each month at Hilland 2 NW
Month
Record daily precipitation (mm)
Date
Jan
25.7 mm (1.0 in)
13 January 1939
Feb
38.1 mm (1.5 in)
8 February 2001
Mar
56.9 mm (2.2 in)
14 March 1973
Apr
67.3 mm (2.6 in)
12 April 1941
May
101.6 mm (4.0 in)
6 May 1993
Jun
98.3 mm (3.9 in)
7 June 1925
Jul
144.0 mm (5.7 in)
20 July 1969
Aug
154.9 mm (6.1 in)
16 August 1930
Sep
47.0 mm (1.9 in)
6 September 1911
Oct
51.1 mm (2.0 in)
4 October 1951
Nov
47.2 mm (1.9 in)
5 November 1922
Dec
24.1 mm (0.9 in)
11 December 1965
Period of Record Coverage
1909 to 2001
Complete yearUnder 90 percent of days
82 years of record at Hilland 2 NW, 1909 to 2001. 20 years have data for under 90 percent of days and are left out of rankings: 1909, 1921, 1926, 1927, 1937, 1941, 1943, 1944 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 49 complete years at Hilland 2 NW, 1911 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 1951, at 5.4 C (41.8 F), and the warmest was 1934, at 11.6 C (52.8 F). The strongest colour marks a difference of 3.5 C (6.3 F).
Annual mean temperature at Hilland 2 NW as warming stripes, 1911 to 1999
Year
Annual mean temperature
Difference from the station mean
1911
8.7 C
+0.59 C
1912
7.8 C
-0.29 C
1913
8.2 C
+0.08 C
1914
8.8 C
+0.75 C
1915
7.2 C
-0.88 C
1916
6.6 C
-1.50 C
1917
6.6 C
-1.49 C
1918
8.4 C
+0.27 C
1922
7.0 C
-1.10 C
1923
7.6 C
-0.49 C
1924
6.9 C
-1.23 C
1931
10.9 C
+2.79 C
1932
8.5 C
+0.43 C
1933
10.4 C
+2.26 C
1934
11.6 C
+3.48 C
1935
9.5 C
+1.42 C
1936
8.9 C
+0.82 C
1938
9.7 C
+1.65 C
1939
9.2 C
+1.08 C
1940
7.3 C
-0.76 C
1947
8.0 C
-0.13 C
1948
7.8 C
-0.25 C
1949
7.6 C
-0.52 C
1950
5.7 C
-2.35 C
1951
5.4 C
-2.65 C
1952
7.7 C
-0.44 C
1955
8.0 C
-0.10 C
1956
8.5 C
+0.42 C
1957
8.1 C
-0.04 C
1958
8.6 C
+0.47 C
1959
7.9 C
-0.16 C
1960
8.2 C
+0.08 C
1961
9.0 C
+0.94 C
1962
8.4 C
+0.26 C
1963
9.8 C
+1.74 C
1964
8.2 C
+0.13 C
1965
7.8 C
-0.31 C
1968
7.6 C
-0.46 C
1970
7.8 C
-0.27 C
1972
7.0 C
-1.07 C
1973
9.0 C
+0.88 C
1989
7.7 C
-0.43 C
1992
7.9 C
-0.15 C
1993
5.9 C
-2.21 C
1995
7.5 C
-0.64 C
1996
5.7 C
-2.41 C
1997
7.9 C
-0.20 C
1998
8.7 C
+0.57 C
1999
9.4 C
+1.34 C
The fitted trend in annual mean temperature here over 1911 to 1999 is -0.1 C (-0.2 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.4 to 0.1) per decade. The slope is a straight line fitted to 49 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Hilland 2 NW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.1 C (-0.2 to 0.1) per decade
-0.1 F (-0.4 to 0.1) per decade
1911 to 1999
49
Not clearly different from zero
Mean daily maximum
-0.15 C (-0.31 to 0.01) per decade
-0.27 F (-0.56 to 0.01) per decade
1911 to 1999
49
Not clearly different from zero
Mean daily minimum
0.03 C (-0.10 to 0.15) per decade
0.05 F (-0.18 to 0.28) per decade
1911 to 1999
49
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
1909 to 2001
Yearly extremes at Hilland 2 NW: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.1 C (115.0 F)
1936
40.6 C (105.1 F)
82
Coldest night (TNn)
-37.8 C (-36.0 F)
1917
-30.0 C (-22.0 F)
82
Wettest day (Rx1day)
154.9 mm (6.1 in)
1930
42.1 mm (1.7 in)
82
Wettest five days (Rx5day)
209.5 mm (8.2 in)
1969
62.3 mm (2.5 in)
82
Longest dry spell (CDD)
74 days
1999
36 days
82
Hottest day (TXx)
The hottest day of the year at Hilland 2 NW, 1909 to 2001. The record is 46.1 C (115.0 F) in 1936, marked on the chart; the median year is 40.6 C (105.1 F).
Hottest day (TXx) at Hilland 2 NW by year
Year
Hottest day (TXx)
1909
40.0 C (104.0 F)
1910
40.6 C (105.1 F)
1911
39.4 C (102.9 F)
1912
39.4 C (102.9 F)
1913
40.0 C (104.0 F)
1914
41.7 C (107.1 F)
1915
33.9 C (93.0 F)
1916
38.3 C (100.9 F)
1917
42.2 C (108.0 F)
1918
39.4 C (102.9 F)
1919
39.4 C (102.9 F)
1920
42.8 C (109.0 F)
1921
41.1 C (106.0 F)
1922
37.8 C (100.0 F)
1923
35.6 C (96.1 F)
1924
40.0 C (104.0 F)
1925
39.4 C (102.9 F)
1926
42.2 C (108.0 F)
1927
36.1 C (97.0 F)
1928
40.6 C (105.1 F)
1929
42.8 C (109.0 F)
1930
42.2 C (108.0 F)
1931
43.9 C (111.0 F)
1932
40.6 C (105.1 F)
1933
45.0 C (113.0 F)
1934
43.3 C (109.9 F)
1935
43.9 C (111.0 F)
1936
46.1 C (115.0 F)
1937
43.3 C (109.9 F)
1938
41.7 C (107.1 F)
1939
44.4 C (111.9 F)
1940
40.6 C (105.1 F)
1941
32.8 C (91.0 F)
1942
41.1 C (106.0 F)
1943
34.4 C (93.9 F)
1944
35.6 C (96.1 F)
1945
40.0 C (104.0 F)
1946
40.0 C (104.0 F)
1947
42.8 C (109.0 F)
1948
40.6 C (105.1 F)
1949
42.2 C (108.0 F)
1950
36.7 C (98.1 F)
1951
38.9 C (102.0 F)
1952
43.3 C (109.9 F)
1953
37.8 C (100.0 F)
1954
40.6 C (105.1 F)
1955
41.1 C (106.0 F)
1956
38.9 C (102.0 F)
1957
39.4 C (102.9 F)
1958
40.6 C (105.1 F)
1959
40.6 C (105.1 F)
1960
42.2 C (108.0 F)
1961
40.6 C (105.1 F)
1962
38.9 C (102.0 F)
1963
41.7 C (107.1 F)
1964
40.0 C (104.0 F)
1965
39.4 C (102.9 F)
1966
41.1 C (106.0 F)
1967
38.9 C (102.0 F)
1968
37.8 C (100.0 F)
1969
39.4 C (102.9 F)
1970
41.7 C (107.1 F)
1971
39.4 C (102.9 F)
1972
39.4 C (102.9 F)
1973
41.1 C (106.0 F)
1974
41.7 C (107.1 F)
1975
40.6 C (105.1 F)
1976
40.6 C (105.1 F)
1988
43.9 C (111.0 F)
1989
42.8 C (109.0 F)
1990
40.6 C (105.1 F)
1991
39.4 C (102.9 F)
1992
38.9 C (102.0 F)
1993
35.0 C (95.0 F)
1994
38.9 C (102.0 F)
1995
41.1 C (106.0 F)
1996
38.3 C (100.9 F)
1997
37.2 C (99.0 F)
1998
41.1 C (106.0 F)
1999
40.6 C (105.1 F)
2000
39.4 C (102.9 F)
2001
14.4 C (57.9 F)
Coldest night (TNn)
The coldest night of the year at Hilland 2 NW, 1909 to 2001. The record is -37.8 C (-36.0 F) in 1917, marked on the chart; the median year is -30.0 C (-22.0 F).
Coldest night (TNn) at Hilland 2 NW by year
Year
Coldest night (TNn)
1909
-24.4 C (-11.9 F)
1910
-28.9 C (-20.0 F)
1911
-30.0 C (-22.0 F)
1912
-35.6 C (-32.1 F)
1913
-33.9 C (-29.0 F)
1914
-33.3 C (-27.9 F)
1915
-28.3 C (-18.9 F)
1916
-37.2 C (-35.0 F)
1917
-37.8 C (-36.0 F)
1918
-35.6 C (-32.1 F)
1919
-31.7 C (-25.1 F)
1920
-26.7 C (-16.1 F)
1921
-25.0 C (-13.0 F)
1922
-30.0 C (-22.0 F)
1923
-28.3 C (-18.9 F)
1924
-32.2 C (-26.0 F)
1925
-28.9 C (-20.0 F)
1926
-25.0 C (-13.0 F)
1927
-30.6 C (-23.1 F)
1928
-31.7 C (-25.1 F)
1929
-32.2 C (-26.0 F)
1930
-31.7 C (-25.1 F)
1931
-22.8 C (-9.0 F)
1932
-31.1 C (-24.0 F)
1933
-33.9 C (-29.0 F)
1934
-26.1 C (-15.0 F)
1935
-28.9 C (-20.0 F)
1936
-34.4 C (-29.9 F)
1937
-27.2 C (-17.0 F)
1938
-26.7 C (-16.1 F)
1939
-31.7 C (-25.1 F)
1940
-31.7 C (-25.1 F)
1941
-23.3 C (-9.9 F)
1942
-30.0 C (-22.0 F)
1943
-33.3 C (-27.9 F)
1944
-33.3 C (-27.9 F)
1945
-24.4 C (-11.9 F)
1946
-29.4 C (-20.9 F)
1947
-31.1 C (-24.0 F)
1948
-29.4 C (-20.9 F)
1949
-34.4 C (-29.9 F)
1950
-32.8 C (-27.0 F)
1951
-31.7 C (-25.1 F)
1952
-29.4 C (-20.9 F)
1953
-27.2 C (-17.0 F)
1954
-30.6 C (-23.1 F)
1955
-27.2 C (-17.0 F)
1956
-26.1 C (-15.0 F)
1957
-29.4 C (-20.9 F)
1958
-26.7 C (-16.1 F)
1959
-28.3 C (-18.9 F)
1960
-30.0 C (-22.0 F)
1961
-25.0 C (-13.0 F)
1962
-32.2 C (-26.0 F)
1963
-32.2 C (-26.0 F)
1964
-29.4 C (-20.9 F)
1965
-27.2 C (-17.0 F)
1966
-30.0 C (-22.0 F)
1967
-32.2 C (-26.0 F)
1968
-31.7 C (-25.1 F)
1969
-30.0 C (-22.0 F)
1970
-31.1 C (-24.0 F)
1971
-30.6 C (-23.1 F)
1972
-31.7 C (-25.1 F)
1973
-27.8 C (-18.0 F)
1974
-28.9 C (-20.0 F)
1975
-31.7 C (-25.1 F)
1976
-12.2 C (10.0 F)
1988
-22.8 C (-9.0 F)
1989
-35.6 C (-32.1 F)
1990
-20.0 C (-4.0 F)
1991
-23.9 C (-11.0 F)
1992
-25.6 C (-14.1 F)
1993
-30.6 C (-23.1 F)
1994
-33.9 C (-29.0 F)
1995
-25.6 C (-14.1 F)
1996
-34.4 C (-29.9 F)
1997
-28.3 C (-18.9 F)
1998
-32.2 C (-26.0 F)
1999
-27.8 C (-18.0 F)
2000
-26.1 C (-15.0 F)
2001
-27.2 C (-17.0 F)
Wettest day (Rx1day)
The wettest day of the year at Hilland 2 NW, 1909 to 2001. The record is 154.9 mm (6.1 in) in 1930, marked on the chart; the median year is 42.1 mm (1.7 in).
Wettest day (Rx1day) at Hilland 2 NW by year
Year
Wettest day (Rx1day)
1909
39.4 mm (1.6 in)
1910
34.3 mm (1.4 in)
1911
47.0 mm (1.9 in)
1912
76.2 mm (3.0 in)
1913
53.3 mm (2.1 in)
1914
33.0 mm (1.3 in)
1915
97.8 mm (3.9 in)
1916
39.4 mm (1.6 in)
1917
40.6 mm (1.6 in)
1918
27.7 mm (1.1 in)
1919
44.5 mm (1.8 in)
1920
27.9 mm (1.1 in)
1921
33.0 mm (1.3 in)
1922
66.5 mm (2.6 in)
1923
49.8 mm (2.0 in)
1924
27.7 mm (1.1 in)
1925
98.3 mm (3.9 in)
1926
90.7 mm (3.6 in)
1927
91.4 mm (3.6 in)
1928
68.6 mm (2.7 in)
1929
30.2 mm (1.2 in)
1930
154.9 mm (6.1 in)
1931
33.0 mm (1.3 in)
1932
42.2 mm (1.7 in)
1933
16.0 mm (0.6 in)
1934
25.4 mm (1.0 in)
1935
31.2 mm (1.2 in)
1936
29.5 mm (1.2 in)
1937
92.7 mm (3.6 in)
1938
50.8 mm (2.0 in)
1939
26.9 mm (1.1 in)
1940
41.9 mm (1.6 in)
1941
67.3 mm (2.6 in)
1942
50.0 mm (2.0 in)
1943
95.3 mm (3.8 in)
1944
27.9 mm (1.1 in)
1945
23.9 mm (0.9 in)
1946
40.6 mm (1.6 in)
1947
37.8 mm (1.5 in)
1948
51.1 mm (2.0 in)
1949
29.0 mm (1.1 in)
1950
45.7 mm (1.8 in)
1951
51.1 mm (2.0 in)
1952
43.7 mm (1.7 in)
1953
71.1 mm (2.8 in)
1954
33.8 mm (1.3 in)
1955
41.9 mm (1.6 in)
1956
24.1 mm (0.9 in)
1957
42.2 mm (1.7 in)
1958
34.5 mm (1.4 in)
1959
32.0 mm (1.3 in)
1960
44.5 mm (1.8 in)
1961
22.9 mm (0.9 in)
1962
62.0 mm (2.4 in)
1963
38.9 mm (1.5 in)
1964
45.2 mm (1.8 in)
1965
49.8 mm (2.0 in)
1966
25.7 mm (1.0 in)
1967
66.0 mm (2.6 in)
1968
50.0 mm (2.0 in)
1969
144.0 mm (5.7 in)
1970
36.1 mm (1.4 in)
1971
63.0 mm (2.5 in)
1972
53.8 mm (2.1 in)
1973
56.9 mm (2.2 in)
1974
34.5 mm (1.4 in)
1975
36.8 mm (1.4 in)
1976
39.4 mm (1.6 in)
1988
51.3 mm (2.0 in)
1989
37.6 mm (1.5 in)
1990
34.5 mm (1.4 in)
1991
19.3 mm (0.8 in)
1992
34.8 mm (1.4 in)
1993
101.6 mm (4.0 in)
1994
49.3 mm (1.9 in)
1995
43.7 mm (1.7 in)
1996
50.8 mm (2.0 in)
1997
31.0 mm (1.2 in)
1998
38.1 mm (1.5 in)
1999
83.8 mm (3.3 in)
2000
65.0 mm (2.6 in)
2001
38.1 mm (1.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Hilland 2 NW, 1909 to 2001. The record is 209.5 mm (8.2 in) in 1969, marked on the chart; the median year is 62.3 mm (2.5 in).
Wettest five days (Rx5day) at Hilland 2 NW by year
Year
Wettest five days (Rx5day)
1909
74.9 mm (2.9 in)
1910
47.4 mm (1.9 in)
1911
48.3 mm (1.9 in)
1912
105.5 mm (4.2 in)
1913
57.1 mm (2.2 in)
1914
44.5 mm (1.8 in)
1915
127.0 mm (5.0 in)
1916
54.6 mm (2.1 in)
1917
65.5 mm (2.6 in)
1918
53.5 mm (2.1 in)
1919
65.3 mm (2.6 in)
1920
53.6 mm (2.1 in)
1921
62.5 mm (2.5 in)
1922
77.9 mm (3.1 in)
1923
80.6 mm (3.2 in)
1924
59.4 mm (2.3 in)
1925
152.5 mm (6.0 in)
1926
104.2 mm (4.1 in)
1927
134.1 mm (5.3 in)
1928
106.4 mm (4.2 in)
1929
45.0 mm (1.8 in)
1930
194.3 mm (7.6 in)
1931
33.0 mm (1.3 in)
1932
63.8 mm (2.5 in)
1933
35.9 mm (1.4 in)
1934
36.8 mm (1.4 in)
1935
62.5 mm (2.5 in)
1936
29.5 mm (1.2 in)
1937
116.6 mm (4.6 in)
1938
58.9 mm (2.3 in)
1939
61.2 mm (2.4 in)
1940
47.2 mm (1.9 in)
1941
74.7 mm (2.9 in)
1942
89.6 mm (3.5 in)
1943
138.6 mm (5.5 in)
1944
35.1 mm (1.4 in)
1945
44.7 mm (1.8 in)
1946
52.1 mm (2.1 in)
1947
65.5 mm (2.6 in)
1948
75.5 mm (3.0 in)
1949
48.6 mm (1.9 in)
1950
53.9 mm (2.1 in)
1951
66.1 mm (2.6 in)
1952
77.3 mm (3.0 in)
1953
114.7 mm (4.5 in)
1954
52.6 mm (2.1 in)
1955
62.0 mm (2.4 in)
1956
60.9 mm (2.4 in)
1957
63.3 mm (2.5 in)
1958
50.4 mm (2.0 in)
1959
57.4 mm (2.3 in)
1960
56.1 mm (2.2 in)
1961
34.3 mm (1.4 in)
1962
114.0 mm (4.5 in)
1963
49.1 mm (1.9 in)
1964
94.7 mm (3.7 in)
1965
67.3 mm (2.6 in)
1966
44.9 mm (1.8 in)
1967
120.9 mm (4.8 in)
1968
93.5 mm (3.7 in)
1969
209.5 mm (8.2 in)
1970
62.7 mm (2.5 in)
1971
90.9 mm (3.6 in)
1972
112.5 mm (4.4 in)
1973
85.4 mm (3.4 in)
1974
53.0 mm (2.1 in)
1975
79.8 mm (3.1 in)
1976
39.9 mm (1.6 in)
1988
52.3 mm (2.1 in)
1989
56.6 mm (2.2 in)
1990
43.4 mm (1.7 in)
1991
23.6 mm (0.9 in)
1992
54.8 mm (2.2 in)
1993
124.7 mm (4.9 in)
1994
49.3 mm (1.9 in)
1995
65.3 mm (2.6 in)
1996
99.9 mm (3.9 in)
1997
51.1 mm (2.0 in)
1998
58.7 mm (2.3 in)
1999
114.3 mm (4.5 in)
2000
90.4 mm (3.6 in)
2001
38.1 mm (1.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Hilland 2 NW, 1909 to 2001. The record is 74 days in 1999, marked on the chart; the median year is 36 days.
Longest dry spell (CDD) at Hilland 2 NW by year
Year
Longest dry spell (CDD)
1909
34 days
1910
27 days
1911
33 days
1912
33 days
1913
39 days
1914
37 days
1915
21 days
1916
32 days
1917
53 days
1918
45 days
1919
32 days
1920
31 days
1921
35 days
1922
32 days
1923
46 days
1924
33 days
1925
31 days
1926
47 days
1927
34 days
1928
31 days
1929
33 days
1930
40 days
1931
45 days
1932
73 days
1933
67 days
1934
60 days
1935
67 days
1936
59 days
1937
47 days
1938
59 days
1939
59 days
1940
57 days
1941
54 days
1942
37 days
1943
49 days
1944
28 days
1945
67 days
1946
33 days
1947
46 days
1948
36 days
1949
51 days
1950
35 days
1951
31 days
1952
57 days
1953
26 days
1954
32 days
1955
27 days
1956
33 days
1957
45 days
1958
40 days
1959
39 days
1960
37 days
1961
30 days
1962
43 days
1963
36 days
1964
42 days
1965
23 days
1966
24 days
1967
29 days
1968
24 days
1969
34 days
1970
26 days
1971
21 days
1972
37 days
1973
30 days
1974
48 days
1975
35 days
1976
34 days
1988
37 days
1989
49 days
1990
45 days
1991
33 days
1992
59 days
1993
28 days
1994
34 days
1995
39 days
1996
29 days
1997
26 days
1998
38 days
1999
74 days
2000
56 days
2001
13 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
49 years with a frost
Across 49 years with a frost, the median last spring frost at Hilland 2 NW falls on 10 May and the median first autumn frost on 30 September, which leaves a median of 142 days between them.
Fitted over all years, the growing season changes by +0.3 days per decade at this station.
Frost dates and growing season at Hilland 2 NW
Measure
Median, all years
Earliest period
Recent period (1940 to 1999)
Recent against earliest
Fitted trend
Last spring frost
10 May
n/a
10 May
n/a
-0.5 days per decade
First autumn frost
30 September
n/a
30 September
n/a
-0.2 days per decade
Growing days
142 days
n/a
144 days
n/a
+0.3 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
63 years, 1910 to 2000
A day with at least 42.1 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 135.9 mm (5.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Hilland 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
42.1 mm (1.7 in)
5 years
59.9 mm (2.4 in)
10 years
74.2 mm (2.9 in)
25 years
95.7 mm (3.8 in)
50 years
114.4 mm (4.5 in)
100 years
135.9 mm (5.4 in)
Longer than the 63 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, 63 years of values from 1910 to 2000.
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: 154.9 mm (6.1 in) in 1930; 101.6 mm (4.0 in) in 1993; 98.3 mm (3.9 in) in 1925.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Hilland 2 NW, at 1939 and 1955. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1939 ran 1.0 C (1.8 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1955 ran 0.5 C (0.9 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Hilland 2 NW, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1939
-1.0
-1.8
likely
5
1955
+0.5
+0.9
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Hilland 2 NW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hilland 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.