Record envelope, standing records and threshold days for Grover 10 W (USC00053643), Colorado, United States, with 78 years of record.
Key Facts for Grover 10 W
Grover 10 W (USC00053643) is a weather station in Colorado, United States at 40.85 latitude and -104.40 longitude, 1,551 m (5,090 ft) above sea level.
The station reports from 1893 to 1970, 78 years of record.
1,464 records set at Grover 10 W still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Grover 10 W set a daily record precipitation of 31.5 mm (1.2 in) on 26 July 1970.
About the Station
Location: Colorado, United States, 40.85 latitude, -104.40 longitude.
Elevation: 1,551 m (5,090 ft).
Period of record: 1893 to 1970, 78 years.
Eligible elements: tmax, tmin, prcp, snow.
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 Grover 10 W. 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 Grover 10 W, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.6 C (69.1 F)
-35.6 C (-32.1 F)
n/a
n/a
Feb
23.3 C (73.9 F)
-35.6 C (-32.1 F)
n/a
n/a
Mar
26.7 C (80.1 F)
-32.2 C (-26.0 F)
n/a
n/a
Apr
28.9 C (84.0 F)
-20.6 C (-5.1 F)
n/a
n/a
May
33.9 C (93.0 F)
-11.1 C (12.0 F)
n/a
n/a
Jun
40.0 C (104.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jul
41.1 C (106.0 F)
0.0 C (32.0 F)
n/a
n/a
Aug
40.6 C (105.1 F)
-1.1 C (30.0 F)
n/a
n/a
Sep
36.1 C (97.0 F)
-13.3 C (8.1 F)
n/a
n/a
Oct
32.2 C (90.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Nov
26.1 C (79.0 F)
-26.7 C (-16.1 F)
n/a
n/a
Dec
26.1 C (79.0 F)
-35.0 C (-31.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Grover 10 W still stand. 1936 holds the most, with 49.
Standing records at Grover 10 W by the year they were set
Year set
Standing records
1893
19
1910
16
1911
7
1912
18
1913
26
1914
14
1915
32
1916
39
1917
35
1918
26
1919
22
1920
29
1921
25
1922
22
1923
15
1924
34
1925
25
1926
23
1927
30
1928
28
1929
24
1930
32
1931
28
1932
27
1933
23
1934
34
1935
24
1936
49
1937
25
1938
20
1939
36
1940
24
1941
11
1942
18
1943
28
1944
21
1945
28
1946
20
1947
24
1948
19
1949
12
1950
21
1951
23
1952
25
1953
15
1954
27
1955
24
1956
18
1957
11
1958
23
1959
28
1960
27
1961
4
1962
27
1963
29
1964
22
1965
24
1966
21
1967
22
1968
19
1969
35
1970
7
All-Time Record Progression
1 new records
1 all-time records were set at Grover 10 W between 8 January 1962 and 8 January 1962. Each dot is a new record.
When Grover 10 W set new all-time records
Date
Kind
Detail
1962-01-08
Record daily snowfall
Record daily snowfall 40.6 cm (16.0 in)
Wettest Day of Each Month
Jul: 96.5 mm (3.8 in)
The wettest day on record for each calendar month at Grover 10 W. The most was 96.5 mm (3.8 in) on 28 July 1926.
Record daily precipitation for each month at Grover 10 W
Month
Record daily precipitation (mm)
Date
Jan
26.7 mm (1.1 in)
16 January 1916
Feb
30.5 mm (1.2 in)
28 February 1912
Mar
19.1 mm (0.8 in)
11 March 1912
Apr
50.8 mm (2.0 in)
20 April 1929
May
76.2 mm (3.0 in)
20 May 1916
Jun
52.1 mm (2.1 in)
29 June 1962
Jul
96.5 mm (3.8 in)
28 July 1926
Aug
57.2 mm (2.3 in)
5 August 1917
Sep
48.3 mm (1.9 in)
11 September 1938
Oct
41.1 mm (1.6 in)
16 October 1942
Nov
22.9 mm (0.9 in)
13 November 1906
Dec
22.9 mm (0.9 in)
13 December 1937
Period of Record Coverage
1893 to 1970
Complete yearUnder 90 percent of days
62 years of record at Grover 10 W, 1893 to 1970. 13 years have data for under 90 percent of days and are left out of rankings: 1893, 1910, 1911, 1919, 1921, 1922, 1925, 1926 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 42 complete years at Grover 10 W, 1912 to 1969. Blue stripes are years cooler than the station's own mean of 8.5 C (47.3 F); red stripes are warmer. The coolest year was 1913, at 6.7 C (44.1 F), and the warmest was 1963, at 10.4 C (50.8 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Grover 10 W as warming stripes, 1912 to 1969
Year
Annual mean temperature
Difference from the station mean
1912
6.9 C
-1.68 C
1913
6.7 C
-1.79 C
1914
7.8 C
-0.73 C
1915
7.2 C
-1.31 C
1916
6.9 C
-1.68 C
1917
7.1 C
-1.44 C
1918
7.3 C
-1.27 C
1920
7.3 C
-1.24 C
1923
7.6 C
-0.92 C
1924
7.2 C
-1.36 C
1927
8.4 C
-0.11 C
1931
9.8 C
+1.23 C
1932
8.0 C
-0.53 C
1933
9.3 C
+0.78 C
1938
9.4 C
+0.88 C
1939
10.1 C
+1.52 C
1941
9.1 C
+0.55 C
1942
8.4 C
-0.14 C
1943
9.7 C
+1.13 C
1944
8.3 C
-0.21 C
1945
7.9 C
-0.68 C
1946
9.1 C
+0.59 C
1947
8.4 C
-0.09 C
1948
8.5 C
-0.02 C
1950
8.6 C
+0.07 C
1951
6.8 C
-1.71 C
1952
8.2 C
-0.31 C
1953
9.1 C
+0.57 C
1954
9.8 C
+1.25 C
1955
8.0 C
-0.57 C
1956
9.2 C
+0.65 C
1958
9.5 C
+0.99 C
1959
8.7 C
+0.12 C
1961
8.6 C
+0.03 C
1962
9.3 C
+0.74 C
1963
10.4 C
+1.91 C
1964
9.4 C
+0.87 C
1965
9.2 C
+0.64 C
1966
9.5 C
+0.98 C
1967
9.2 C
+0.62 C
1968
9.1 C
+0.56 C
1969
9.5 C
+0.97 C
The annual mean temperature here has risen by 0.4 C (0.3 to 0.5) per decade over 1912 to 1969. In Fahrenheit: 0.7 F (0.5 to 0.9) per decade. The slope is a straight line fitted to 42 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Grover 10 W
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.4 C (0.3 to 0.5) per decade
0.7 F (0.5 to 0.9) per decade
1912 to 1969
42
Rise
Mean daily maximum
0.3 C (0.2 to 0.4) per decade
0.5 F (0.3 to 0.8) per decade
1912 to 1969
42
Rise
Mean daily minimum
0.5 C (0.3 to 0.6) per decade
0.9 F (0.6 to 1.1) per decade
1912 to 1969
42
Rise
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
1893 to 1970
Yearly extremes at Grover 10 W: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.1 C (106.0 F)
1939
36.7 C (98.1 F)
62
Coldest night (TNn)
-35.6 C (-32.1 F)
1930
-26.7 C (-16.1 F)
62
Wettest day (Rx1day)
96.5 mm (3.8 in)
1926
33.5 mm (1.3 in)
67
Wettest five days (Rx5day)
102.6 mm (4.0 in)
1941
49.5 mm (1.9 in)
67
Longest dry spell (CDD)
101 days
1966
48 days
67
Hottest day (TXx)
The hottest day of the year at Grover 10 W, 1893 to 1970. The record is 41.1 C (106.0 F) in 1939, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Grover 10 W by year
Year
Hottest day (TXx)
1893
35.6 C (96.1 F)
1897
n/a
1898
n/a
1905
n/a
1906
n/a
1907
n/a
1910
36.7 C (98.1 F)
1911
20.6 C (69.1 F)
1912
35.6 C (96.1 F)
1913
36.7 C (98.1 F)
1914
36.1 C (97.0 F)
1915
33.9 C (93.0 F)
1916
35.6 C (96.1 F)
1917
36.1 C (97.0 F)
1918
35.6 C (96.1 F)
1919
37.2 C (99.0 F)
1920
36.1 C (97.0 F)
1921
35.6 C (96.1 F)
1922
38.3 C (100.9 F)
1923
32.8 C (91.0 F)
1924
37.2 C (99.0 F)
1925
37.2 C (99.0 F)
1926
37.2 C (99.0 F)
1927
36.7 C (98.1 F)
1928
36.7 C (98.1 F)
1929
35.6 C (96.1 F)
1930
36.7 C (98.1 F)
1931
38.9 C (102.0 F)
1932
36.7 C (98.1 F)
1933
38.9 C (102.0 F)
1934
40.0 C (104.0 F)
1935
40.6 C (105.1 F)
1936
39.4 C (102.9 F)
1937
38.3 C (100.9 F)
1938
38.9 C (102.0 F)
1939
41.1 C (106.0 F)
1940
39.4 C (102.9 F)
1941
36.7 C (98.1 F)
1942
35.0 C (95.0 F)
1943
35.6 C (96.1 F)
1944
37.8 C (100.0 F)
1945
35.6 C (96.1 F)
1946
36.7 C (98.1 F)
1947
36.7 C (98.1 F)
1948
35.6 C (96.1 F)
1949
34.4 C (93.9 F)
1950
33.9 C (93.0 F)
1951
36.7 C (98.1 F)
1952
37.8 C (100.0 F)
1953
37.8 C (100.0 F)
1954
40.0 C (104.0 F)
1955
36.1 C (97.0 F)
1956
36.7 C (98.1 F)
1957
35.6 C (96.1 F)
1958
36.7 C (98.1 F)
1959
36.1 C (97.0 F)
1960
37.8 C (100.0 F)
1961
35.6 C (96.1 F)
1962
36.7 C (98.1 F)
1963
37.8 C (100.0 F)
1964
37.8 C (100.0 F)
1965
35.6 C (96.1 F)
1966
37.8 C (100.0 F)
1967
35.6 C (96.1 F)
1968
36.7 C (98.1 F)
1969
39.4 C (102.9 F)
1970
36.1 C (97.0 F)
Coldest night (TNn)
The coldest night of the year at Grover 10 W, 1893 to 1970. The record is -35.6 C (-32.1 F) in 1930, marked on the chart; the median year is -26.7 C (-16.1 F).
Coldest night (TNn) at Grover 10 W by year
Year
Coldest night (TNn)
1893
-25.6 C (-14.1 F)
1897
n/a
1898
n/a
1905
n/a
1906
n/a
1907
n/a
1910
-13.9 C (7.0 F)
1911
-28.9 C (-20.0 F)
1912
-26.1 C (-15.0 F)
1913
-33.3 C (-27.9 F)
1914
-29.4 C (-20.9 F)
1915
-27.8 C (-18.0 F)
1916
-28.3 C (-18.9 F)
1917
-28.9 C (-20.0 F)
1918
-28.3 C (-18.9 F)
1919
-35.0 C (-31.0 F)
1920
-26.1 C (-15.0 F)
1921
-23.9 C (-11.0 F)
1922
-32.2 C (-26.0 F)
1923
-32.2 C (-26.0 F)
1924
-34.4 C (-29.9 F)
1925
-22.8 C (-9.0 F)
1926
-28.3 C (-18.9 F)
1927
-27.8 C (-18.0 F)
1928
-26.7 C (-16.1 F)
1929
-26.7 C (-16.1 F)
1930
-35.6 C (-32.1 F)
1931
-20.6 C (-5.1 F)
1932
-30.0 C (-22.0 F)
1933
-31.7 C (-25.1 F)
1934
-23.3 C (-9.9 F)
1935
-29.4 C (-20.9 F)
1936
-35.6 C (-32.1 F)
1937
-30.6 C (-23.1 F)
1938
-20.6 C (-5.1 F)
1939
-24.4 C (-11.9 F)
1940
-26.7 C (-16.1 F)
1941
-21.1 C (-6.0 F)
1942
-28.9 C (-20.0 F)
1943
-28.3 C (-18.9 F)
1944
-21.1 C (-6.0 F)
1945
-24.4 C (-11.9 F)
1946
-20.0 C (-4.0 F)
1947
-22.2 C (-8.0 F)
1948
-26.1 C (-15.0 F)
1949
-25.0 C (-13.0 F)
1950
-27.8 C (-18.0 F)
1951
-32.2 C (-26.0 F)
1952
-23.9 C (-11.0 F)
1953
-20.6 C (-5.1 F)
1954
-23.3 C (-9.9 F)
1955
-23.9 C (-11.0 F)
1956
-22.2 C (-8.0 F)
1957
-15.6 C (3.9 F)
1958
-18.9 C (-2.0 F)
1959
-28.9 C (-20.0 F)
1960
-26.1 C (-15.0 F)
1961
-23.9 C (-11.0 F)
1962
-31.1 C (-24.0 F)
1963
-32.8 C (-27.0 F)
1964
-30.6 C (-23.1 F)
1965
-21.7 C (-7.1 F)
1966
-26.7 C (-16.1 F)
1967
-25.6 C (-14.1 F)
1968
-26.7 C (-16.1 F)
1969
-21.1 C (-6.0 F)
1970
-21.7 C (-7.1 F)
Wettest day (Rx1day)
The wettest day of the year at Grover 10 W, 1893 to 1970. The record is 96.5 mm (3.8 in) in 1926, marked on the chart; the median year is 33.5 mm (1.3 in).
Wettest day (Rx1day) at Grover 10 W by year
Year
Wettest day (Rx1day)
1893
17.8 mm (0.7 in)
1897
31.8 mm (1.3 in)
1898
21.3 mm (0.8 in)
1905
33.0 mm (1.3 in)
1906
48.3 mm (1.9 in)
1907
17.8 mm (0.7 in)
1910
30.2 mm (1.2 in)
1911
15.2 mm (0.6 in)
1912
30.5 mm (1.2 in)
1913
38.4 mm (1.5 in)
1914
26.2 mm (1.0 in)
1915
42.4 mm (1.7 in)
1916
76.2 mm (3.0 in)
1917
57.2 mm (2.3 in)
1918
31.8 mm (1.3 in)
1919
63.5 mm (2.5 in)
1920
31.8 mm (1.3 in)
1921
36.1 mm (1.4 in)
1922
76.2 mm (3.0 in)
1923
27.2 mm (1.1 in)
1924
38.1 mm (1.5 in)
1925
26.7 mm (1.1 in)
1926
96.5 mm (3.8 in)
1927
19.1 mm (0.8 in)
1928
17.3 mm (0.7 in)
1929
50.8 mm (2.0 in)
1930
49.5 mm (1.9 in)
1931
25.4 mm (1.0 in)
1932
38.4 mm (1.5 in)
1933
49.0 mm (1.9 in)
1934
29.7 mm (1.2 in)
1935
27.9 mm (1.1 in)
1936
24.1 mm (0.9 in)
1937
22.9 mm (0.9 in)
1938
48.3 mm (1.9 in)
1939
15.2 mm (0.6 in)
1940
24.4 mm (1.0 in)
1941
45.7 mm (1.8 in)
1942
41.1 mm (1.6 in)
1943
30.5 mm (1.2 in)
1944
54.6 mm (2.1 in)
1945
47.8 mm (1.9 in)
1946
22.6 mm (0.9 in)
1947
29.7 mm (1.2 in)
1948
44.2 mm (1.7 in)
1949
38.1 mm (1.5 in)
1950
38.9 mm (1.5 in)
1951
38.4 mm (1.5 in)
1952
28.4 mm (1.1 in)
1953
57.2 mm (2.3 in)
1954
44.5 mm (1.8 in)
1955
40.9 mm (1.6 in)
1956
19.3 mm (0.8 in)
1957
50.8 mm (2.0 in)
1958
45.7 mm (1.8 in)
1959
27.9 mm (1.1 in)
1960
16.5 mm (0.6 in)
1961
27.4 mm (1.1 in)
1962
52.1 mm (2.1 in)
1963
25.7 mm (1.0 in)
1964
25.7 mm (1.0 in)
1965
36.8 mm (1.4 in)
1966
33.5 mm (1.3 in)
1967
33.0 mm (1.3 in)
1968
41.1 mm (1.6 in)
1969
44.5 mm (1.8 in)
1970
38.1 mm (1.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Grover 10 W, 1893 to 1970. The record is 102.6 mm (4.0 in) in 1941, marked on the chart; the median year is 49.5 mm (1.9 in).
Wettest five days (Rx5day) at Grover 10 W by year
Year
Wettest five days (Rx5day)
1893
21.6 mm (0.9 in)
1897
57.6 mm (2.3 in)
1898
24.6 mm (1.0 in)
1905
45.7 mm (1.8 in)
1906
48.3 mm (1.9 in)
1907
17.8 mm (0.7 in)
1910
37.5 mm (1.5 in)
1911
15.5 mm (0.6 in)
1912
52.6 mm (2.1 in)
1913
68.7 mm (2.7 in)
1914
42.6 mm (1.7 in)
1915
72.4 mm (2.9 in)
1916
85.0 mm (3.3 in)
1917
57.2 mm (2.3 in)
1918
59.7 mm (2.4 in)
1919
72.9 mm (2.9 in)
1920
64.1 mm (2.5 in)
1921
90.3 mm (3.6 in)
1922
79.5 mm (3.1 in)
1923
37.9 mm (1.5 in)
1924
41.9 mm (1.6 in)
1925
36.3 mm (1.4 in)
1926
53.8 mm (2.1 in)
1927
29.7 mm (1.2 in)
1928
39.6 mm (1.6 in)
1929
90.8 mm (3.6 in)
1930
100.8 mm (4.0 in)
1931
45.5 mm (1.8 in)
1932
44.2 mm (1.7 in)
1933
79.0 mm (3.1 in)
1934
42.1 mm (1.7 in)
1935
51.0 mm (2.0 in)
1936
26.5 mm (1.0 in)
1937
37.1 mm (1.5 in)
1938
83.1 mm (3.3 in)
1939
28.6 mm (1.1 in)
1940
31.8 mm (1.3 in)
1941
102.6 mm (4.0 in)
1942
69.1 mm (2.7 in)
1943
89.3 mm (3.5 in)
1944
54.6 mm (2.1 in)
1945
40.6 mm (1.6 in)
1946
32.5 mm (1.3 in)
1947
43.2 mm (1.7 in)
1948
48.8 mm (1.9 in)
1949
62.5 mm (2.5 in)
1950
72.6 mm (2.9 in)
1951
43.9 mm (1.7 in)
1952
49.5 mm (1.9 in)
1953
75.5 mm (3.0 in)
1954
44.5 mm (1.8 in)
1955
46.3 mm (1.8 in)
1956
34.3 mm (1.4 in)
1957
99.7 mm (3.9 in)
1958
52.8 mm (2.1 in)
1959
41.4 mm (1.6 in)
1960
30.0 mm (1.2 in)
1961
60.2 mm (2.4 in)
1962
55.7 mm (2.2 in)
1963
30.8 mm (1.2 in)
1964
27.4 mm (1.1 in)
1965
70.6 mm (2.8 in)
1966
49.5 mm (1.9 in)
1967
52.1 mm (2.1 in)
1968
48.7 mm (1.9 in)
1969
61.0 mm (2.4 in)
1970
49.8 mm (2.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Grover 10 W, 1893 to 1970. The record is 101 days in 1966, marked on the chart; the median year is 48 days.
Longest dry spell (CDD) at Grover 10 W by year
Year
Longest dry spell (CDD)
1893
50 days
1897
27 days
1898
18 days
1905
31 days
1906
48 days
1907
40 days
1910
55 days
1911
25 days
1912
29 days
1913
29 days
1914
52 days
1915
73 days
1916
28 days
1917
30 days
1918
36 days
1919
30 days
1920
37 days
1921
26 days
1922
57 days
1923
34 days
1924
55 days
1925
72 days
1926
38 days
1927
58 days
1928
47 days
1929
42 days
1930
39 days
1931
58 days
1932
73 days
1933
65 days
1934
92 days
1935
58 days
1936
65 days
1937
51 days
1938
38 days
1939
75 days
1940
34 days
1941
59 days
1942
38 days
1943
53 days
1944
74 days
1945
49 days
1946
52 days
1947
39 days
1948
38 days
1949
41 days
1950
47 days
1951
37 days
1952
45 days
1953
57 days
1954
56 days
1955
33 days
1956
76 days
1957
42 days
1958
43 days
1959
62 days
1960
42 days
1961
25 days
1962
53 days
1963
61 days
1964
66 days
1965
74 days
1966
101 days
1967
35 days
1968
80 days
1969
63 days
1970
59 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
42 years with a frost
Across 42 years with a frost, the median last spring frost at Grover 10 W falls on 15 May and the median first autumn frost on 22 September, which leaves a median of 128 days between them.
Fitted over all years, the growing season changes by +7.5 days per decade at this station.
Frost dates and growing season at Grover 10 W
Measure
Median, all years
Earliest period
Recent period (1932 to 1969)
Recent against earliest
Fitted trend
Last spring frost
15 May
n/a
14 May
n/a
-3.0 days per decade
First autumn frost
22 September
n/a
26 September
n/a
+4.4 days per decade
Growing days
128 days
n/a
137 days
n/a
+7.5 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
45 years, 1912 to 1969
A day with at least 36.0 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 76.0 mm (3.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Grover 10 W: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
36.0 mm (1.4 in)
5 years
47.6 mm (1.9 in)
10 years
54.9 mm (2.2 in)
25 years
63.7 mm (2.5 in)
50 years
70.0 mm (2.8 in)
Longer than the 45 years of record
100 years
76.0 mm (3.0 in)
Longer than the 45 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, 45 years of values from 1912 to 1969.
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: 76.2 mm (3.0 in) in 1916; 63.5 mm (2.5 in) in 1919; 57.2 mm (2.3 in) in 1917.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Grover 10 W, at 1962. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1962 ran 0.6 C (1.0 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Grover 10 W, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1962
+0.6
+1.0
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 Grover 10 W standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Grover 10 W 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.