Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Grimsby Rock Chapel. 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 Grimsby Rock Chapel, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
17.8 C (64.0 F)
-27.8 C (-18.0 F)
n/a
n/a
Feb
14.4 C (57.9 F)
-29.4 C (-20.9 F)
n/a
n/a
Mar
25.6 C (78.1 F)
-22.8 C (-9.0 F)
n/a
n/a
Apr
30.6 C (87.1 F)
-17.2 C (1.0 F)
n/a
n/a
May
37.2 C (99.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jun
36.1 C (97.0 F)
1.7 C (35.1 F)
n/a
n/a
Jul
41.1 C (106.0 F)
5.6 C (42.1 F)
n/a
n/a
Aug
40.6 C (105.1 F)
1.1 C (34.0 F)
n/a
n/a
Sep
38.3 C (100.9 F)
-0.6 C (30.9 F)
n/a
n/a
Oct
30.0 C (86.0 F)
-9.4 C (15.1 F)
n/a
n/a
Nov
24.4 C (75.9 F)
-15.6 C (3.9 F)
n/a
n/a
Dec
15.0 C (59.0 F)
-28.9 C (-20.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Grimsby Rock Chapel still stand. 1936 holds the most, with 55.
Standing records at Grimsby Rock Chapel by the year they were set
Year set
Standing records
1916
44
1917
50
1918
50
1919
35
1920
50
1921
43
1922
15
1923
39
1924
32
1925
48
1926
29
1927
32
1928
32
1929
30
1930
40
1931
26
1932
30
1933
37
1934
41
1935
19
1936
55
1937
18
1938
22
1939
22
1940
27
1941
26
1942
37
1943
24
1944
18
1945
52
1946
29
1947
28
1948
25
1949
32
1950
32
1951
24
1952
16
1953
23
1954
16
1955
26
1956
17
1957
22
1958
18
1959
26
1960
15
1961
18
1962
33
1963
17
1965
15
1966
9
All-Time Record Progression
3 new records
3 all-time records were set at Grimsby Rock Chapel between 12 December 1944 and 15 October 1954. Each dot is a new record.
When Grimsby Rock Chapel set new all-time records
Date
Kind
Detail
1944-12-12
Record daily snowfall
Record daily snowfall 61.0 cm (24.0 in)
1950-08-29
Record daily precipitation
Record daily precipitation 90.2 mm (3.6 in)
1954-10-15
Record daily precipitation
Record daily precipitation 115.3 mm (4.5 in)
Wettest Day of Each Month
Oct: 115.3 mm (4.5 in)
The wettest day on record for each calendar month at Grimsby Rock Chapel. The most was 115.3 mm (4.5 in) on 15 October 1954.
Record daily precipitation for each month at Grimsby Rock Chapel
Month
Record daily precipitation (mm)
Date
Jan
52.1 mm (2.1 in)
19 January 1929
Feb
40.6 mm (1.6 in)
16 February 1954
Mar
38.1 mm (1.5 in)
18 March 1936
Apr
41.9 mm (1.6 in)
20 April 1943
May
68.6 mm (2.7 in)
25 May 1953
Jun
78.0 mm (3.1 in)
11 June 1922
Jul
72.6 mm (2.9 in)
12 July 1962
Aug
90.2 mm (3.6 in)
29 August 1950
Sep
77.0 mm (3.0 in)
29 September 1924
Oct
115.3 mm (4.5 in)
15 October 1954
Nov
45.2 mm (1.8 in)
9 November 1962
Dec
61.0 mm (2.4 in)
12 December 1944
Period of Record Coverage
1916 to 1966
Complete yearUnder 90 percent of days
50 years of record at Grimsby Rock Chapel, 1916 to 1966. 3 years have data for under 90 percent of days and are left out of rankings: 1963, 1965, 1966.
Cooler than the station meanWarmer than the station mean
One stripe for each of 45 complete years at Grimsby Rock Chapel, 1916 to 1961. Blue stripes are years cooler than the station's own mean of 7.7 C (45.9 F); red stripes are warmer. The coolest year was 1917, at 5.5 C (41.9 F), and the warmest was 1953, at 9.6 C (49.3 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Grimsby Rock Chapel as warming stripes, 1916 to 1961
Year
Annual mean temperature
Difference from the station mean
1916
7.3 C
-0.44 C
1917
5.5 C
-2.20 C
1918
7.2 C
-0.48 C
1919
8.2 C
+0.53 C
1920
7.0 C
-0.70 C
1921
9.3 C
+1.61 C
1922
8.2 C
+0.46 C
1923
7.1 C
-0.57 C
1924
6.4 C
-1.31 C
1925
7.0 C
-0.68 C
1926
6.0 C
-1.74 C
1927
7.6 C
-0.15 C
1928
7.3 C
-0.43 C
1929
7.0 C
-0.74 C
1930
7.5 C
-0.20 C
1931
8.6 C
+0.87 C
1932
7.8 C
+0.12 C
1933
7.9 C
+0.21 C
1934
7.1 C
-0.62 C
1935
7.3 C
-0.41 C
1936
7.4 C
-0.31 C
1937
7.8 C
+0.12 C
1938
8.5 C
+0.75 C
1939
8.1 C
+0.35 C
1940
6.8 C
-0.94 C
1941
8.7 C
+0.98 C
1942
7.8 C
+0.06 C
1943
6.9 C
-0.83 C
1944
8.3 C
+0.61 C
1945
7.1 C
-0.58 C
1946
8.5 C
+0.84 C
1947
7.8 C
+0.12 C
1948
7.8 C
+0.11 C
1949
9.0 C
+1.31 C
1950
7.5 C
-0.19 C
1951
7.6 C
-0.12 C
1952
8.8 C
+1.05 C
1953
9.6 C
+1.91 C
1955
8.9 C
+1.17 C
1956
7.5 C
-0.24 C
1957
8.3 C
+0.63 C
1958
7.2 C
-0.53 C
1959
8.3 C
+0.59 C
1960
7.4 C
-0.29 C
1961
7.9 C
+0.16 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.4) per decade over 1916 to 1961. In Fahrenheit: 0.4 F (0.1 to 0.7) per decade. The slope is a straight line fitted to 45 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Grimsby Rock Chapel
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.4) per decade
0.4 F (0.1 to 0.7) per decade
1916 to 1961
45
Rise
Mean daily maximum
0.19 C (0.00 to 0.38) per decade
0.34 F (-0.01 to 0.68) per decade
1916 to 1961
45
Not clearly different from zero
Mean daily minimum
0.3 C (0.1 to 0.5) per decade
0.5 F (0.2 to 0.8) per decade
1916 to 1961
45
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
1914 to 1966
Yearly extremes at Grimsby Rock Chapel: 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)
1936
34.4 C (93.9 F)
50
Coldest night (TNn)
-29.4 C (-20.9 F)
1918
-21.4 C (-6.5 F)
50
Wettest day (Rx1day)
115.3 mm (4.5 in)
1954
42.2 mm (1.7 in)
52
Wettest five days (Rx5day)
163.0 mm (6.4 in)
1954
63.3 mm (2.5 in)
52
Longest dry spell (CDD)
36 days
1924
18 days
52
Hottest day (TXx)
The hottest day of the year at Grimsby Rock Chapel, 1914 to 1966. The record is 41.1 C (106.0 F) in 1936, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Grimsby Rock Chapel by year
Year
Hottest day (TXx)
1914
n/a
1915
n/a
1916
37.2 C (99.0 F)
1917
36.1 C (97.0 F)
1918
38.3 C (100.9 F)
1919
37.2 C (99.0 F)
1920
32.2 C (90.0 F)
1921
37.2 C (99.0 F)
1922
34.4 C (93.9 F)
1923
34.4 C (93.9 F)
1924
33.3 C (91.9 F)
1925
35.0 C (95.0 F)
1926
32.2 C (90.0 F)
1927
32.2 C (90.0 F)
1928
31.7 C (89.1 F)
1929
33.9 C (93.0 F)
1930
35.0 C (95.0 F)
1931
35.0 C (95.0 F)
1932
34.4 C (93.9 F)
1933
36.7 C (98.1 F)
1934
36.1 C (97.0 F)
1935
36.1 C (97.0 F)
1936
41.1 C (106.0 F)
1937
34.4 C (93.9 F)
1938
34.4 C (93.9 F)
1939
36.7 C (98.1 F)
1940
34.4 C (93.9 F)
1941
39.4 C (102.9 F)
1942
35.0 C (95.0 F)
1943
35.6 C (96.1 F)
1944
36.1 C (97.0 F)
1945
32.8 C (91.0 F)
1946
33.3 C (91.9 F)
1947
33.9 C (93.0 F)
1948
40.6 C (105.1 F)
1949
38.3 C (100.9 F)
1950
33.9 C (93.0 F)
1951
31.7 C (89.1 F)
1952
35.6 C (96.1 F)
1953
38.3 C (100.9 F)
1954
33.9 C (93.0 F)
1955
35.6 C (96.1 F)
1956
35.0 C (95.0 F)
1957
36.1 C (97.0 F)
1958
33.9 C (93.0 F)
1959
33.9 C (93.0 F)
1960
31.7 C (89.1 F)
1961
31.7 C (89.1 F)
1962
33.9 C (93.0 F)
1963
33.3 C (91.9 F)
1965
33.9 C (93.0 F)
1966
20.0 C (68.0 F)
Coldest night (TNn)
The coldest night of the year at Grimsby Rock Chapel, 1914 to 1966. The record is -29.4 C (-20.9 F) in 1918, marked on the chart; the median year is -21.4 C (-6.5 F).
Coldest night (TNn) at Grimsby Rock Chapel by year
Year
Coldest night (TNn)
1914
n/a
1915
n/a
1916
-22.8 C (-9.0 F)
1917
-25.0 C (-13.0 F)
1918
-29.4 C (-20.9 F)
1919
-20.0 C (-4.0 F)
1920
-22.8 C (-9.0 F)
1921
-17.8 C (0.0 F)
1922
-18.9 C (-2.0 F)
1923
-21.1 C (-6.0 F)
1924
-21.7 C (-7.1 F)
1925
-28.9 C (-20.0 F)
1926
-20.6 C (-5.1 F)
1927
-26.1 C (-15.0 F)
1928
-23.3 C (-9.9 F)
1929
-27.2 C (-17.0 F)
1930
-21.7 C (-7.1 F)
1931
-23.3 C (-9.9 F)
1932
-16.7 C (1.9 F)
1933
-23.9 C (-11.0 F)
1934
-28.9 C (-20.0 F)
1935
-22.2 C (-8.0 F)
1936
-21.1 C (-6.0 F)
1937
-13.9 C (7.0 F)
1938
-17.8 C (0.0 F)
1939
-21.1 C (-6.0 F)
1940
-21.7 C (-7.1 F)
1941
-17.2 C (1.0 F)
1942
-23.9 C (-11.0 F)
1943
-27.2 C (-17.0 F)
1944
-23.3 C (-9.9 F)
1945
-27.8 C (-18.0 F)
1946
-20.0 C (-4.0 F)
1947
-17.8 C (0.0 F)
1948
-23.3 C (-9.9 F)
1949
-16.7 C (1.9 F)
1950
-22.8 C (-9.0 F)
1951
-19.4 C (-2.9 F)
1952
-18.3 C (-0.9 F)
1953
-15.0 C (5.0 F)
1954
-19.4 C (-2.9 F)
1955
-20.6 C (-5.1 F)
1956
-15.0 C (5.0 F)
1957
-22.8 C (-9.0 F)
1958
-22.2 C (-8.0 F)
1959
-20.0 C (-4.0 F)
1960
-21.1 C (-6.0 F)
1961
-21.1 C (-6.0 F)
1962
-20.6 C (-5.1 F)
1963
-23.9 C (-11.0 F)
1965
-13.3 C (8.1 F)
1966
-23.9 C (-11.0 F)
Wettest day (Rx1day)
The wettest day of the year at Grimsby Rock Chapel, 1914 to 1966. The record is 115.3 mm (4.5 in) in 1954, marked on the chart; the median year is 42.2 mm (1.7 in).
Wettest day (Rx1day) at Grimsby Rock Chapel by year
Year
Wettest day (Rx1day)
1914
32.0 mm (1.3 in)
1915
57.9 mm (2.3 in)
1916
46.5 mm (1.8 in)
1917
35.6 mm (1.4 in)
1918
43.2 mm (1.7 in)
1919
36.6 mm (1.4 in)
1920
37.6 mm (1.5 in)
1921
41.7 mm (1.6 in)
1922
78.0 mm (3.1 in)
1923
28.4 mm (1.1 in)
1924
77.0 mm (3.0 in)
1925
65.0 mm (2.6 in)
1926
43.7 mm (1.7 in)
1927
29.7 mm (1.2 in)
1928
36.3 mm (1.4 in)
1929
52.1 mm (2.1 in)
1930
33.8 mm (1.3 in)
1931
31.0 mm (1.2 in)
1932
44.5 mm (1.8 in)
1933
28.4 mm (1.1 in)
1934
38.9 mm (1.5 in)
1935
42.4 mm (1.7 in)
1936
38.1 mm (1.5 in)
1937
32.8 mm (1.3 in)
1938
39.6 mm (1.6 in)
1939
50.8 mm (2.0 in)
1940
29.5 mm (1.2 in)
1941
52.6 mm (2.1 in)
1942
55.9 mm (2.2 in)
1943
41.9 mm (1.6 in)
1944
61.0 mm (2.4 in)
1945
61.7 mm (2.4 in)
1946
35.3 mm (1.4 in)
1947
43.2 mm (1.7 in)
1948
43.4 mm (1.7 in)
1949
57.4 mm (2.3 in)
1950
90.2 mm (3.6 in)
1951
40.4 mm (1.6 in)
1952
45.2 mm (1.8 in)
1953
68.6 mm (2.7 in)
1954
115.3 mm (4.5 in)
1955
67.1 mm (2.6 in)
1956
67.6 mm (2.7 in)
1957
63.8 mm (2.5 in)
1958
41.9 mm (1.6 in)
1959
34.8 mm (1.4 in)
1960
24.1 mm (0.9 in)
1961
29.7 mm (1.2 in)
1962
72.6 mm (2.9 in)
1963
34.3 mm (1.4 in)
1965
31.2 mm (1.2 in)
1966
17.5 mm (0.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at Grimsby Rock Chapel, 1914 to 1966. The record is 163.0 mm (6.4 in) in 1954, marked on the chart; the median year is 63.3 mm (2.5 in).
Wettest five days (Rx5day) at Grimsby Rock Chapel by year
Year
Wettest five days (Rx5day)
1914
59.6 mm (2.3 in)
1915
65.7 mm (2.6 in)
1916
78.0 mm (3.1 in)
1917
72.2 mm (2.8 in)
1918
58.4 mm (2.3 in)
1919
53.4 mm (2.1 in)
1920
59.9 mm (2.4 in)
1921
84.7 mm (3.3 in)
1922
95.3 mm (3.8 in)
1923
50.3 mm (2.0 in)
1924
93.3 mm (3.7 in)
1925
93.4 mm (3.7 in)
1926
58.4 mm (2.3 in)
1927
78.7 mm (3.1 in)
1928
54.0 mm (2.1 in)
1929
76.5 mm (3.0 in)
1930
66.9 mm (2.6 in)
1931
40.1 mm (1.6 in)
1932
87.7 mm (3.5 in)
1933
56.8 mm (2.2 in)
1934
44.5 mm (1.8 in)
1935
56.0 mm (2.2 in)
1936
54.2 mm (2.1 in)
1937
58.0 mm (2.3 in)
1938
60.4 mm (2.4 in)
1939
54.6 mm (2.1 in)
1940
60.7 mm (2.4 in)
1941
61.2 mm (2.4 in)
1942
81.8 mm (3.2 in)
1943
52.1 mm (2.1 in)
1944
66.8 mm (2.6 in)
1945
119.3 mm (4.7 in)
1946
46.5 mm (1.8 in)
1947
59.7 mm (2.4 in)
1948
65.3 mm (2.6 in)
1949
61.2 mm (2.4 in)
1950
140.7 mm (5.5 in)
1951
66.1 mm (2.6 in)
1952
66.5 mm (2.6 in)
1953
88.4 mm (3.5 in)
1954
163.0 mm (6.4 in)
1955
88.7 mm (3.5 in)
1956
73.9 mm (2.9 in)
1957
82.6 mm (3.3 in)
1958
69.3 mm (2.7 in)
1959
69.7 mm (2.7 in)
1960
60.7 mm (2.4 in)
1961
49.7 mm (2.0 in)
1962
77.5 mm (3.1 in)
1963
48.0 mm (1.9 in)
1965
41.6 mm (1.6 in)
1966
39.1 mm (1.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Grimsby Rock Chapel, 1914 to 1966. The record is 36 days in 1924, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Grimsby Rock Chapel by year
Year
Longest dry spell (CDD)
1914
18 days
1915
20 days
1916
13 days
1917
18 days
1918
28 days
1919
20 days
1920
15 days
1921
12 days
1922
18 days
1923
17 days
1924
36 days
1925
12 days
1926
17 days
1927
18 days
1928
18 days
1929
19 days
1930
20 days
1931
13 days
1932
13 days
1933
18 days
1934
18 days
1935
17 days
1936
25 days
1937
14 days
1938
12 days
1939
20 days
1940
13 days
1941
21 days
1942
22 days
1943
34 days
1944
16 days
1945
13 days
1946
20 days
1947
17 days
1948
16 days
1949
22 days
1950
21 days
1951
16 days
1952
25 days
1953
17 days
1954
17 days
1955
18 days
1956
26 days
1957
23 days
1958
20 days
1959
15 days
1960
14 days
1961
17 days
1962
16 days
1963
13 days
1965
9 days
1966
8 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
45 years with a frost
Across 45 years with a frost, the median last spring frost at Grimsby Rock Chapel falls on 2 May and the median first autumn frost on 14 October, which leaves a median of 169 days between them.
Fitted over all years, the growing season changes by +1.1 days per decade at this station.
Frost dates and growing season at Grimsby Rock Chapel
Measure
Median, all years
Earliest period
Recent period (1931 to 1961)
Recent against earliest
Fitted trend
Last spring frost
2 May
n/a
2 May
n/a
-0.3 days per decade
First autumn frost
14 October
n/a
15 October
n/a
+0.8 days per decade
Growing days
169 days
n/a
172 days
n/a
+1.1 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
46 years, 1914 to 1961
A day with at least 42.6 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 99.9 mm (3.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Grimsby Rock Chapel: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
42.6 mm (1.7 in)
5 years
55.9 mm (2.2 in)
10 years
65.5 mm (2.6 in)
25 years
78.6 mm (3.1 in)
50 years
89.0 mm (3.5 in)
Longer than the 46 years of record
100 years
99.9 mm (3.9 in)
Longer than the 46 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, 46 years of values from 1914 to 1961.
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 1950; 78.0 mm (3.1 in) in 1922; 77.0 mm (3.0 in) in 1924.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Grimsby Rock Chapel standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Grimsby Rock Chapel 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.