Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Grove (Comparison). 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 Grove (Comparison), with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
40.4 C (104.7 F)
0.2 C (32.4 F)
n/a
n/a
Feb
39.7 C (103.5 F)
-0.6 C (30.9 F)
n/a
n/a
Mar
37.3 C (99.1 F)
-4.0 C (24.8 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-3.4 C (25.9 F)
n/a
n/a
May
25.1 C (77.2 F)
-5.5 C (22.1 F)
n/a
n/a
Jun
21.0 C (69.8 F)
-7.5 C (18.5 F)
n/a
n/a
Jul
19.7 C (67.5 F)
-5.6 C (21.9 F)
n/a
n/a
Aug
23.6 C (74.5 F)
-4.6 C (23.7 F)
n/a
n/a
Sep
29.8 C (85.6 F)
-5.7 C (21.7 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-3.2 C (26.2 F)
n/a
n/a
Nov
36.6 C (97.9 F)
-1.8 C (28.8 F)
n/a
n/a
Dec
37.2 C (99.0 F)
-1.4 C (29.5 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Grove (Comparison) still stand. 1965 holds the most, with 41.
Standing records at Grove (Comparison) by the year they were set
Year set
Standing records
1957
40
1958
33
1959
38
1960
32
1961
24
1962
29
1963
34
1964
27
1965
41
1966
28
1967
35
1968
16
1969
29
1970
30
1971
21
1972
31
1973
38
1974
17
1975
27
1976
34
1977
23
1978
34
1979
26
1980
34
1981
21
1982
33
1983
36
1984
18
1985
25
1986
24
1987
28
1988
29
1989
25
1990
25
1991
25
1992
25
1993
22
1994
30
1995
37
1996
16
1997
21
1998
25
1999
31
2000
37
2001
21
2002
18
2003
25
2004
17
2005
36
2006
23
2007
26
2008
21
2009
19
2010
4
Wettest Day of Each Month
Apr: 90.2 mm (3.6 in)
The wettest day on record for each calendar month at Grove (Comparison). The most was 90.2 mm (3.6 in) on 22 April 1960.
Record daily precipitation for each month at Grove (Comparison)
Month
Record daily precipitation (mm)
Date
Jan
79.8 mm (3.1 in)
3 January 1970
Feb
77.4 mm (3.0 in)
9 February 1996
Mar
70.4 mm (2.8 in)
28 March 1997
Apr
90.2 mm (3.6 in)
22 April 1960
May
60.7 mm (2.4 in)
3 May 1973
Jun
70.8 mm (2.8 in)
26 June 2009
Jul
62.0 mm (2.4 in)
3 July 1990
Aug
60.5 mm (2.4 in)
17 August 1958
Sep
63.8 mm (2.5 in)
15 September 1957
Oct
46.7 mm (1.8 in)
22 October 1970
Nov
44.7 mm (1.8 in)
21 November 1954
Dec
73.8 mm (2.9 in)
27 December 1998
Period of Record Coverage
1957 to 2010
Complete yearUnder 90 percent of days
54 years of record at Grove (Comparison), 1957 to 2010. 2 years have data for under 90 percent of days and are left out of rankings: 2009, 2010.
Cooler than the station meanWarmer than the station mean
One stripe for each of 51 complete years at Grove (Comparison), 1957 to 2008. Blue stripes are years cooler than the station's own mean of 11.5 C (52.7 F); red stripes are warmer. The coolest year was 1958, at 10.8 C (51.5 F), and the warmest was 1988, at 12.3 C (54.2 F). The strongest colour marks a difference of 0.9 C (1.6 F).
Annual mean temperature at Grove (Comparison) as warming stripes, 1957 to 2008
Year
Annual mean temperature
Difference from the station mean
1957
10.8 C
-0.67 C
1958
10.8 C
-0.68 C
1959
11.5 C
-0.02 C
1960
11.3 C
-0.21 C
1961
12.0 C
+0.45 C
1962
11.5 C
-0.04 C
1963
11.0 C
-0.47 C
1964
10.9 C
-0.63 C
1965
10.9 C
-0.65 C
1966
11.2 C
-0.35 C
1967
11.2 C
-0.33 C
1968
11.1 C
-0.44 C
1969
11.3 C
-0.17 C
1970
11.1 C
-0.42 C
1971
11.6 C
+0.06 C
1972
11.8 C
+0.29 C
1973
11.8 C
+0.29 C
1974
11.7 C
+0.16 C
1975
11.6 C
+0.05 C
1976
11.2 C
-0.35 C
1977
11.2 C
-0.27 C
1978
11.3 C
-0.21 C
1979
11.5 C
-0.02 C
1980
12.1 C
+0.55 C
1981
11.9 C
+0.41 C
1982
11.6 C
+0.12 C
1983
11.4 C
-0.12 C
1984
11.1 C
-0.39 C
1985
11.4 C
-0.10 C
1986
11.2 C
-0.29 C
1987
11.3 C
-0.21 C
1988
12.3 C
+0.84 C
1989
11.8 C
+0.31 C
1990
11.8 C
+0.32 C
1991
11.4 C
-0.08 C
1992
11.2 C
-0.29 C
1993
12.0 C
+0.47 C
1994
11.5 C
-0.03 C
1995
10.9 C
-0.56 C
1996
11.1 C
-0.42 C
1997
11.5 C
-0.04 C
1998
11.5 C
+0.04 C
1999
12.0 C
+0.45 C
2000
12.0 C
+0.53 C
2001
11.9 C
+0.43 C
2002
12.0 C
+0.52 C
2003
12.1 C
+0.57 C
2004
11.5 C
-0.04 C
2005
12.3 C
+0.80 C
2007
12.2 C
+0.65 C
2008
11.5 C
+0.02 C
The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1957 to 2008. In Fahrenheit: 0.3 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 51 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Grove (Comparison)
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (0.1 to 0.2) per decade
0.3 F (0.1 to 0.4) per decade
1957 to 2008
51
Rise
Mean daily maximum
0.2 C (0.1 to 0.3) per decade
0.3 F (0.2 to 0.5) per decade
1957 to 2008
51
Rise
Mean daily minimum
0.10 C (0.02 to 0.18) per decade
0.18 F (0.04 to 0.32) per decade
1957 to 2008
51
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
1952 to 2010
Yearly extremes at Grove (Comparison): the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.4 C (104.7 F)
1959
36.2 C (97.1 F)
54
Coldest night (TNn)
-7.5 C (18.5 F)
1972
-4.1 C (24.5 F)
54
Wettest day (Rx1day)
90.2 mm (3.6 in)
1960
42.8 mm (1.7 in)
59
Wettest five days (Rx5day)
132.5 mm (5.2 in)
1971
79.8 mm (3.1 in)
59
Longest dry spell (CDD)
32 days
1988
18 days
59
Hottest day (TXx)
The hottest day of the year at Grove (Comparison), 1952 to 2010. The record is 40.4 C (104.7 F) in 1959, marked on the chart; the median year is 36.2 C (97.1 F).
Hottest day (TXx) at Grove (Comparison) by year
Year
Hottest day (TXx)
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
35.6 C (96.1 F)
1958
32.8 C (91.0 F)
1959
40.4 C (104.7 F)
1960
38.6 C (101.5 F)
1961
35.4 C (95.7 F)
1962
37.8 C (100.0 F)
1963
33.8 C (92.8 F)
1964
30.8 C (87.4 F)
1965
36.6 C (97.9 F)
1966
37.3 C (99.1 F)
1967
39.7 C (103.5 F)
1968
36.1 C (97.0 F)
1969
34.9 C (94.8 F)
1970
32.7 C (90.9 F)
1971
35.3 C (95.5 F)
1972
33.7 C (92.7 F)
1973
39.2 C (102.6 F)
1974
35.9 C (96.6 F)
1975
36.9 C (98.4 F)
1976
38.3 C (100.9 F)
1977
38.0 C (100.4 F)
1978
33.4 C (92.1 F)
1979
34.4 C (93.9 F)
1980
35.5 C (95.9 F)
1981
37.7 C (99.9 F)
1982
38.8 C (101.8 F)
1983
37.6 C (99.7 F)
1984
31.9 C (89.4 F)
1985
34.3 C (93.7 F)
1986
33.0 C (91.4 F)
1987
34.8 C (94.6 F)
1988
36.8 C (98.2 F)
1989
36.6 C (97.9 F)
1990
35.6 C (96.1 F)
1991
40.0 C (104.0 F)
1992
32.8 C (91.0 F)
1993
35.3 C (95.5 F)
1994
39.2 C (102.6 F)
1995
37.8 C (100.0 F)
1996
31.1 C (88.0 F)
1997
37.2 C (99.0 F)
1998
38.8 C (101.8 F)
1999
33.3 C (91.9 F)
2000
36.4 C (97.5 F)
2001
36.3 C (97.3 F)
2002
33.4 C (92.1 F)
2003
36.4 C (97.5 F)
2004
33.0 C (91.4 F)
2005
35.5 C (95.9 F)
2006
35.0 C (95.0 F)
2007
36.2 C (97.2 F)
2008
37.1 C (98.8 F)
2009
36.3 C (97.3 F)
2010
37.5 C (99.5 F)
Coldest night (TNn)
The coldest night of the year at Grove (Comparison), 1952 to 2010. The record is -7.5 C (18.5 F) in 1972, marked on the chart; the median year is -4.1 C (24.5 F).
Coldest night (TNn) at Grove (Comparison) by year
Year
Coldest night (TNn)
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
-3.6 C (25.5 F)
1958
-4.7 C (23.5 F)
1959
-4.7 C (23.5 F)
1960
-4.6 C (23.7 F)
1961
-4.1 C (24.6 F)
1962
-3.2 C (26.2 F)
1963
-5.0 C (23.0 F)
1964
-3.3 C (26.1 F)
1965
-4.3 C (24.3 F)
1966
-5.0 C (23.0 F)
1967
-3.1 C (26.4 F)
1968
-3.9 C (25.0 F)
1969
-4.2 C (24.4 F)
1970
-4.0 C (24.8 F)
1971
-4.4 C (24.1 F)
1972
-7.5 C (18.5 F)
1973
-5.6 C (21.9 F)
1974
-3.5 C (25.7 F)
1975
-3.8 C (25.2 F)
1976
-4.0 C (24.8 F)
1977
-4.1 C (24.6 F)
1978
-4.8 C (23.4 F)
1979
-4.9 C (23.2 F)
1980
-2.2 C (28.0 F)
1981
-4.3 C (24.3 F)
1982
-4.3 C (24.3 F)
1983
-6.5 C (20.3 F)
1984
-3.3 C (26.1 F)
1985
-3.7 C (25.3 F)
1986
-4.7 C (23.5 F)
1987
-4.2 C (24.4 F)
1988
-3.3 C (26.1 F)
1989
-5.2 C (22.6 F)
1990
-4.3 C (24.3 F)
1991
-4.3 C (24.3 F)
1992
-5.9 C (21.4 F)
1993
-3.2 C (26.2 F)
1994
-5.0 C (23.0 F)
1995
-5.7 C (21.7 F)
1996
-3.4 C (25.9 F)
1997
-3.2 C (26.2 F)
1998
-3.7 C (25.3 F)
1999
-4.6 C (23.7 F)
2000
-4.5 C (23.9 F)
2001
-2.2 C (28.0 F)
2002
-2.2 C (28.0 F)
2003
-2.8 C (27.0 F)
2004
-3.2 C (26.2 F)
2005
-2.7 C (27.1 F)
2006
-3.9 C (25.0 F)
2007
-4.8 C (23.4 F)
2008
-5.5 C (22.1 F)
2009
-2.3 C (27.9 F)
2010
4.2 C (39.6 F)
Wettest day (Rx1day)
The wettest day of the year at Grove (Comparison), 1952 to 2010. The record is 90.2 mm (3.6 in) in 1960, marked on the chart; the median year is 42.8 mm (1.7 in).
Wettest day (Rx1day) at Grove (Comparison) by year
Year
Wettest day (Rx1day)
1952
31.0 mm (1.2 in)
1953
40.6 mm (1.6 in)
1954
55.9 mm (2.2 in)
1955
32.3 mm (1.3 in)
1956
59.7 mm (2.4 in)
1957
63.8 mm (2.5 in)
1958
60.5 mm (2.4 in)
1959
29.2 mm (1.1 in)
1960
90.2 mm (3.6 in)
1961
25.1 mm (1.0 in)
1962
44.7 mm (1.8 in)
1963
20.3 mm (0.8 in)
1964
49.0 mm (1.9 in)
1965
61.7 mm (2.4 in)
1966
60.7 mm (2.4 in)
1967
56.4 mm (2.2 in)
1968
22.6 mm (0.9 in)
1969
49.5 mm (1.9 in)
1970
79.8 mm (3.1 in)
1971
42.4 mm (1.7 in)
1972
37.8 mm (1.5 in)
1973
60.7 mm (2.4 in)
1974
31.4 mm (1.2 in)
1975
37.6 mm (1.5 in)
1976
50.1 mm (2.0 in)
1977
62.4 mm (2.5 in)
1978
36.6 mm (1.4 in)
1979
24.4 mm (1.0 in)
1980
27.6 mm (1.1 in)
1981
44.2 mm (1.7 in)
1982
32.0 mm (1.3 in)
1983
59.6 mm (2.3 in)
1984
53.6 mm (2.1 in)
1985
44.6 mm (1.8 in)
1986
42.8 mm (1.7 in)
1987
22.2 mm (0.9 in)
1988
42.4 mm (1.7 in)
1989
39.2 mm (1.5 in)
1990
62.0 mm (2.4 in)
1991
36.0 mm (1.4 in)
1992
21.2 mm (0.8 in)
1993
63.6 mm (2.5 in)
1994
35.6 mm (1.4 in)
1995
44.4 mm (1.7 in)
1996
77.4 mm (3.0 in)
1997
70.4 mm (2.8 in)
1998
73.8 mm (2.9 in)
1999
47.8 mm (1.9 in)
2000
26.6 mm (1.0 in)
2001
39.4 mm (1.6 in)
2002
42.6 mm (1.7 in)
2003
49.2 mm (1.9 in)
2004
32.4 mm (1.3 in)
2005
57.2 mm (2.3 in)
2006
35.6 mm (1.4 in)
2007
39.2 mm (1.5 in)
2008
25.0 mm (1.0 in)
2009
70.8 mm (2.8 in)
2010
8.0 mm (0.31 in)
Wettest five days (Rx5day)
The wettest five days of the year at Grove (Comparison), 1952 to 2010. The record is 132.5 mm (5.2 in) in 1971, marked on the chart; the median year is 79.8 mm (3.1 in).
Wettest five days (Rx5day) at Grove (Comparison) by year
Year
Wettest five days (Rx5day)
1952
77.4 mm (3.0 in)
1953
70.1 mm (2.8 in)
1954
87.1 mm (3.4 in)
1955
61.7 mm (2.4 in)
1956
85.1 mm (3.4 in)
1957
109.3 mm (4.3 in)
1958
129.2 mm (5.1 in)
1959
42.4 mm (1.7 in)
1960
113.6 mm (4.5 in)
1961
37.8 mm (1.5 in)
1962
65.4 mm (2.6 in)
1963
45.7 mm (1.8 in)
1964
65.8 mm (2.6 in)
1965
123.1 mm (4.8 in)
1966
106.7 mm (4.2 in)
1967
88.4 mm (3.5 in)
1968
46.6 mm (1.8 in)
1969
82.3 mm (3.2 in)
1970
98.8 mm (3.9 in)
1971
132.5 mm (5.2 in)
1972
59.2 mm (2.3 in)
1973
99.1 mm (3.9 in)
1974
82.3 mm (3.2 in)
1975
86.7 mm (3.4 in)
1976
98.0 mm (3.9 in)
1977
79.8 mm (3.1 in)
1978
59.4 mm (2.3 in)
1979
33.8 mm (1.3 in)
1980
45.6 mm (1.8 in)
1981
65.4 mm (2.6 in)
1982
51.2 mm (2.0 in)
1983
89.0 mm (3.5 in)
1984
105.8 mm (4.2 in)
1985
82.0 mm (3.2 in)
1986
84.2 mm (3.3 in)
1987
57.4 mm (2.3 in)
1988
61.6 mm (2.4 in)
1989
51.2 mm (2.0 in)
1990
91.4 mm (3.6 in)
1991
71.0 mm (2.8 in)
1992
52.2 mm (2.1 in)
1993
121.8 mm (4.8 in)
1994
67.8 mm (2.7 in)
1995
79.4 mm (3.1 in)
1996
126.0 mm (5.0 in)
1997
87.2 mm (3.4 in)
1998
84.4 mm (3.3 in)
1999
86.2 mm (3.4 in)
2000
56.2 mm (2.2 in)
2001
81.3 mm (3.2 in)
2002
59.6 mm (2.3 in)
2003
98.8 mm (3.9 in)
2004
78.0 mm (3.1 in)
2005
96.2 mm (3.8 in)
2006
41.0 mm (1.6 in)
2007
63.0 mm (2.5 in)
2008
38.8 mm (1.5 in)
2009
87.0 mm (3.4 in)
2010
6.8 mm (0.27 in)
Longest dry spell (CDD)
The longest dry spell of the year at Grove (Comparison), 1952 to 2010. The record is 32 days in 1988, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Grove (Comparison) by year
Year
Longest dry spell (CDD)
1952
14 days
1953
22 days
1954
27 days
1955
16 days
1956
11 days
1957
12 days
1958
19 days
1959
18 days
1960
20 days
1961
28 days
1962
15 days
1963
18 days
1964
13 days
1965
14 days
1966
15 days
1967
20 days
1968
17 days
1969
15 days
1970
22 days
1971
18 days
1972
18 days
1973
13 days
1974
21 days
1975
16 days
1976
19 days
1977
13 days
1978
15 days
1979
12 days
1980
18 days
1981
13 days
1982
17 days
1983
20 days
1984
13 days
1985
15 days
1986
10 days
1987
21 days
1988
32 days
1989
20 days
1990
14 days
1991
23 days
1992
20 days
1993
17 days
1994
27 days
1995
19 days
1996
18 days
1997
16 days
1998
19 days
1999
13 days
2000
21 days
2001
15 days
2002
21 days
2003
32 days
2004
15 days
2005
22 days
2006
18 days
2007
16 days
2008
18 days
2009
14 days
2010
10 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
51 years with a frost
Across 51 years with a frost, the median last spring frost at Grove (Comparison) falls on 20 October and the median first autumn frost on 20 April, which leaves a median of 183 days between them.
Fitted over all years, the growing season changes by +5.8 days per decade at this station.
Frost dates and growing season at Grove (Comparison)
Measure
Median, all years
Earliest period
Recent period (1978 to 2008)
Recent against earliest
Fitted trend
Last spring frost
20 October
n/a
15 October
n/a
-4.3 days per decade
First autumn frost
20 April
n/a
19 April
n/a
+1.5 days per decade
Growing days
183 days
n/a
183 days
n/a
+5.8 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
55 years, 1953 to 2008
A day with at least 43.9 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 92.3 mm (3.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Grove (Comparison): the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
43.9 mm (1.7 in)
5 years
58.9 mm (2.3 in)
10 years
68.0 mm (2.7 in)
25 years
78.5 mm (3.1 in)
50 years
85.7 mm (3.4 in)
100 years
92.3 mm (3.6 in)
Longer than the 55 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, 55 years of values from 1953 to 2008.
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: 90.2 mm (3.6 in) in 1960; 79.8 mm (3.1 in) in 1970; 77.4 mm (3.0 in) in 1996.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Grove (Comparison), at 1965. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1965 ran 0.2 C (0.4 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Grove (Comparison), against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1965
-0.2
-0.4
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.
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Data for Grove (Comparison) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Grove (Comparison) 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.