Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Gravelbourg. 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 Gravelbourg, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
12.8 C (55.0 F)
-44.4 C (-47.9 F)
n/a
n/a
Feb
17.2 C (63.0 F)
-48.9 C (-56.0 F)
n/a
n/a
Mar
22.2 C (72.0 F)
-38.3 C (-36.9 F)
n/a
n/a
Apr
35.0 C (95.0 F)
-28.3 C (-18.9 F)
n/a
n/a
May
37.0 C (98.6 F)
-14.4 C (6.1 F)
n/a
n/a
Jun
40.0 C (104.0 F)
-6.1 C (21.0 F)
n/a
n/a
Jul
42.8 C (109.0 F)
-1.1 C (30.0 F)
n/a
n/a
Aug
41.7 C (107.1 F)
-3.9 C (25.0 F)
n/a
n/a
Sep
39.4 C (102.9 F)
-12.8 C (9.0 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-25.6 C (-14.1 F)
n/a
n/a
Nov
22.8 C (73.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Dec
20.6 C (69.1 F)
-41.5 C (-42.7 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Gravelbourg still stand. 1928 holds the most, with 71.
Standing records at Gravelbourg by the year they were set
Year set
Standing records
1921
15
1922
48
1923
26
1924
21
1925
16
1928
71
1929
47
1930
27
1931
32
1932
15
1933
18
1934
41
1935
36
1936
59
1937
36
1938
10
1939
36
1940
28
1941
13
1942
20
1943
20
1944
18
1945
31
1946
18
1947
18
1948
19
1949
22
1950
34
1951
33
1952
18
1953
12
1954
27
1955
18
1956
25
1957
18
1958
21
1959
20
1960
12
1961
23
1962
31
1963
23
1964
17
1965
29
1966
27
1967
12
1968
18
1969
23
1970
9
1971
13
1972
32
1973
18
1974
17
1975
13
1976
12
1977
27
1978
14
1979
16
1980
26
1981
25
1982
13
1983
27
Wettest Day of Each Month
Jul: 78.7 mm (3.1 in)
The wettest day on record for each calendar month at Gravelbourg. The most was 78.7 mm (3.1 in) on 19 July 1952.
Record daily precipitation for each month at Gravelbourg
Month
Record daily precipitation (mm)
Date
Jan
22.9 mm (0.9 in)
23 January 1950
Feb
27.9 mm (1.1 in)
10 February 1951
Mar
21.6 mm (0.9 in)
19 March 1931
Apr
38.6 mm (1.5 in)
26 April 1942
May
42.4 mm (1.7 in)
20 May 1974
Jun
52.3 mm (2.1 in)
25 June 1975
Jul
78.7 mm (3.1 in)
19 July 1952
Aug
65.0 mm (2.6 in)
5 August 1965
Sep
64.1 mm (2.5 in)
10 September 1978
Oct
43.2 mm (1.7 in)
12 October 1924
Nov
24.1 mm (0.9 in)
20 November 1924
Dec
30.5 mm (1.2 in)
9 December 1929
Period of Record Coverage
1921 to 1983
Complete yearUnder 90 percent of days
61 years of record at Gravelbourg, 1921 to 1983. 4 years have data for under 90 percent of days and are left out of rankings: 1921, 1925, 1954, 1961.
Cooler than the station meanWarmer than the station mean
One stripe for each of 48 complete years at Gravelbourg, 1922 to 1983. Blue stripes are years cooler than the station's own mean of 3.6 C (38.5 F); red stripes are warmer. The coolest year was 1951, at 0.6 C (33.1 F), and the warmest was 1928, at 7.0 C (44.5 F). The strongest colour marks a difference of 3.4 C (6.1 F).
Annual mean temperature at Gravelbourg as warming stripes, 1922 to 1983
Year
Annual mean temperature
Difference from the station mean
1922
5.1 C
+1.46 C
1924
2.6 C
-1.01 C
1928
7.0 C
+3.32 C
1929
4.2 C
+0.61 C
1930
3.9 C
+0.26 C
1931
5.8 C
+2.16 C
1932
3.4 C
-0.28 C
1933
3.8 C
+0.18 C
1934
4.8 C
+1.18 C
1936
2.0 C
-1.66 C
1937
2.9 C
-0.69 C
1939
3.9 C
+0.28 C
1940
3.6 C
+0.01 C
1941
4.4 C
+0.78 C
1942
3.0 C
-0.60 C
1945
2.5 C
-1.12 C
1946
3.9 C
+0.23 C
1947
3.1 C
-0.50 C
1948
3.1 C
-0.55 C
1949
3.3 C
-0.29 C
1950
0.8 C
-2.85 C
1951
0.6 C
-3.04 C
1953
4.9 C
+1.25 C
1955
2.0 C
-1.62 C
1956
3.3 C
-0.35 C
1957
3.8 C
+0.16 C
1958
4.4 C
+0.75 C
1959
3.4 C
-0.26 C
1960
4.1 C
+0.44 C
1962
4.2 C
+0.58 C
1963
4.8 C
+1.12 C
1964
3.6 C
-0.07 C
1965
1.9 C
-1.75 C
1966
2.7 C
-0.91 C
1967
3.3 C
-0.29 C
1968
4.0 C
+0.38 C
1969
2.9 C
-0.74 C
1970
2.9 C
-0.77 C
1971
3.6 C
-0.04 C
1972
2.7 C
-0.96 C
1973
4.8 C
+1.19 C
1974
4.0 C
+0.40 C
1975
3.4 C
-0.28 C
1976
5.2 C
+1.61 C
1977
4.8 C
+1.14 C
1979
3.2 C
-0.40 C
1980
4.5 C
+0.87 C
1983
4.3 C
+0.63 C
The fitted trend in annual mean temperature here over 1922 to 1983 is -0.04 C (-0.25 to 0.16) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.4 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 Gravelbourg
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.04 C (-0.25 to 0.16) per decade
-0.1 F (-0.4 to 0.3) per decade
1922 to 1983
48
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.3 to 0.1) per decade
-0.2 F (-0.5 to 0.2) per decade
1922 to 1983
48
Not clearly different from zero
Mean daily minimum
0.01 C (-0.25 to 0.27) per decade
0.01 F (-0.45 to 0.48) per decade
1922 to 1983
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
1911 to 1983
Yearly extremes at Gravelbourg: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.8 C (109.0 F)
1937
37.0 C (98.6 F)
61
Coldest night (TNn)
-48.9 C (-56.0 F)
1936
-37.2 C (-35.0 F)
61
Wettest day (Rx1day)
78.7 mm (3.1 in)
1952
35.1 mm (1.4 in)
62
Wettest five days (Rx5day)
124.1 mm (4.9 in)
1978
53.2 mm (2.1 in)
62
Longest dry spell (CDD)
76 days
1946
36 days
62
Hottest day (TXx)
The hottest day of the year at Gravelbourg, 1911 to 1983. The record is 42.8 C (109.0 F) in 1937, marked on the chart; the median year is 37.0 C (98.6 F).
Hottest day (TXx) at Gravelbourg by year
Year
Hottest day (TXx)
1911
n/a
1921
8.9 C (48.0 F)
1922
33.9 C (93.0 F)
1923
32.8 C (91.0 F)
1924
32.8 C (91.0 F)
1925
36.1 C (97.0 F)
1928
35.6 C (96.1 F)
1929
39.4 C (102.9 F)
1930
37.2 C (99.0 F)
1931
39.4 C (102.9 F)
1932
37.8 C (100.0 F)
1933
40.6 C (105.1 F)
1934
36.7 C (98.1 F)
1935
36.1 C (97.0 F)
1936
40.6 C (105.1 F)
1937
42.8 C (109.0 F)
1938
34.4 C (93.9 F)
1939
35.6 C (96.1 F)
1940
40.6 C (105.1 F)
1941
40.0 C (104.0 F)
1942
32.8 C (91.0 F)
1943
34.4 C (93.9 F)
1944
36.7 C (98.1 F)
1945
38.9 C (102.0 F)
1946
37.8 C (100.0 F)
1947
38.3 C (100.9 F)
1948
38.9 C (102.0 F)
1949
41.7 C (107.1 F)
1950
37.2 C (99.0 F)
1951
38.9 C (102.0 F)
1952
36.7 C (98.1 F)
1953
34.4 C (93.9 F)
1954
35.6 C (96.1 F)
1955
34.4 C (93.9 F)
1956
36.7 C (98.1 F)
1957
38.3 C (100.9 F)
1958
39.4 C (102.9 F)
1959
38.9 C (102.0 F)
1960
39.4 C (102.9 F)
1961
39.4 C (102.9 F)
1962
33.9 C (93.0 F)
1963
37.2 C (99.0 F)
1964
36.7 C (98.1 F)
1965
34.4 C (93.9 F)
1966
36.7 C (98.1 F)
1967
37.2 C (99.0 F)
1968
36.7 C (98.1 F)
1969
38.9 C (102.0 F)
1970
36.7 C (98.1 F)
1971
38.3 C (100.9 F)
1972
37.2 C (99.0 F)
1973
37.8 C (100.0 F)
1974
35.6 C (96.1 F)
1975
37.8 C (100.0 F)
1976
37.8 C (100.0 F)
1977
35.6 C (96.1 F)
1978
37.0 C (98.6 F)
1979
35.5 C (95.9 F)
1980
37.0 C (98.6 F)
1981
37.0 C (98.6 F)
1982
32.0 C (89.6 F)
1983
39.0 C (102.2 F)
Coldest night (TNn)
The coldest night of the year at Gravelbourg, 1911 to 1983. The record is -48.9 C (-56.0 F) in 1936, marked on the chart; the median year is -37.2 C (-35.0 F).
Coldest night (TNn) at Gravelbourg by year
Year
Coldest night (TNn)
1911
n/a
1921
-27.8 C (-18.0 F)
1922
-34.4 C (-29.9 F)
1923
-37.2 C (-35.0 F)
1924
-37.2 C (-35.0 F)
1925
-32.2 C (-26.0 F)
1928
-35.6 C (-32.1 F)
1929
-39.4 C (-38.9 F)
1930
-35.6 C (-32.1 F)
1931
-22.2 C (-8.0 F)
1932
-35.6 C (-32.1 F)
1933
-38.3 C (-36.9 F)
1934
-38.9 C (-38.0 F)
1935
-43.9 C (-47.0 F)
1936
-48.9 C (-56.0 F)
1937
-40.6 C (-41.1 F)
1938
-40.6 C (-41.1 F)
1939
-42.8 C (-45.0 F)
1940
-33.9 C (-29.0 F)
1941
-35.6 C (-32.1 F)
1942
-33.3 C (-27.9 F)
1943
-41.1 C (-42.0 F)
1944
-31.7 C (-25.1 F)
1945
-35.0 C (-31.0 F)
1946
-37.2 C (-35.0 F)
1947
-41.1 C (-42.0 F)
1948
-34.4 C (-29.9 F)
1949
-37.2 C (-35.0 F)
1950
-43.9 C (-47.0 F)
1951
-37.2 C (-35.0 F)
1952
-42.2 C (-44.0 F)
1953
-35.0 C (-31.0 F)
1954
-44.4 C (-47.9 F)
1955
-35.0 C (-31.0 F)
1956
-40.0 C (-40.0 F)
1957
-35.0 C (-31.0 F)
1958
-35.0 C (-31.0 F)
1959
-41.1 C (-42.0 F)
1960
-32.8 C (-27.0 F)
1961
-37.2 C (-35.0 F)
1962
-41.7 C (-43.1 F)
1963
-34.4 C (-29.9 F)
1964
-35.6 C (-32.1 F)
1965
-37.2 C (-35.0 F)
1966
-38.3 C (-36.9 F)
1967
-37.2 C (-35.0 F)
1968
-38.9 C (-38.0 F)
1969
-40.6 C (-41.1 F)
1970
-39.4 C (-38.9 F)
1971
-33.3 C (-27.9 F)
1972
-40.0 C (-40.0 F)
1973
-31.7 C (-25.1 F)
1974
-35.6 C (-32.1 F)
1975
-32.2 C (-26.0 F)
1976
-35.6 C (-32.1 F)
1977
-40.0 C (-40.0 F)
1978
-33.9 C (-29.0 F)
1979
-35.0 C (-31.0 F)
1980
-35.0 C (-31.0 F)
1981
-30.5 C (-22.9 F)
1982
-38.0 C (-36.4 F)
1983
-41.5 C (-42.7 F)
Wettest day (Rx1day)
The wettest day of the year at Gravelbourg, 1911 to 1983. The record is 78.7 mm (3.1 in) in 1952, marked on the chart; the median year is 35.1 mm (1.4 in).
Wettest day (Rx1day) at Gravelbourg by year
Year
Wettest day (Rx1day)
1911
54.6 mm (2.1 in)
1921
2.5 mm (0.10 in)
1922
48.3 mm (1.9 in)
1923
29.2 mm (1.1 in)
1924
43.2 mm (1.7 in)
1925
45.7 mm (1.8 in)
1928
31.5 mm (1.2 in)
1929
30.5 mm (1.2 in)
1930
27.9 mm (1.1 in)
1931
30.5 mm (1.2 in)
1932
51.3 mm (2.0 in)
1933
25.1 mm (1.0 in)
1934
35.1 mm (1.4 in)
1935
38.1 mm (1.5 in)
1936
28.4 mm (1.1 in)
1937
35.6 mm (1.4 in)
1938
35.3 mm (1.4 in)
1939
21.6 mm (0.9 in)
1940
25.9 mm (1.0 in)
1941
45.2 mm (1.8 in)
1942
42.9 mm (1.7 in)
1943
26.4 mm (1.0 in)
1944
38.1 mm (1.5 in)
1945
20.3 mm (0.8 in)
1946
34.0 mm (1.3 in)
1947
31.0 mm (1.2 in)
1948
55.4 mm (2.2 in)
1949
20.3 mm (0.8 in)
1950
43.2 mm (1.7 in)
1951
41.1 mm (1.6 in)
1952
78.7 mm (3.1 in)
1953
29.5 mm (1.2 in)
1954
32.0 mm (1.3 in)
1955
41.1 mm (1.6 in)
1956
33.0 mm (1.3 in)
1957
18.3 mm (0.7 in)
1958
27.9 mm (1.1 in)
1959
39.4 mm (1.6 in)
1960
42.2 mm (1.7 in)
1961
14.7 mm (0.6 in)
1962
44.5 mm (1.8 in)
1963
30.0 mm (1.2 in)
1964
34.8 mm (1.4 in)
1965
65.0 mm (2.6 in)
1966
22.4 mm (0.9 in)
1967
39.1 mm (1.5 in)
1968
19.8 mm (0.8 in)
1969
44.5 mm (1.8 in)
1970
42.9 mm (1.7 in)
1971
30.5 mm (1.2 in)
1972
39.6 mm (1.6 in)
1973
25.7 mm (1.0 in)
1974
42.4 mm (1.7 in)
1975
52.3 mm (2.1 in)
1976
20.3 mm (0.8 in)
1977
31.0 mm (1.2 in)
1978
64.1 mm (2.5 in)
1979
36.7 mm (1.4 in)
1980
20.8 mm (0.8 in)
1981
41.5 mm (1.6 in)
1982
38.2 mm (1.5 in)
1983
35.0 mm (1.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Gravelbourg, 1911 to 1983. The record is 124.1 mm (4.9 in) in 1978, marked on the chart; the median year is 53.2 mm (2.1 in).
Wettest five days (Rx5day) at Gravelbourg by year
Year
Wettest five days (Rx5day)
1911
54.6 mm (2.1 in)
1921
5.0 mm (0.20 in)
1922
59.8 mm (2.4 in)
1923
67.1 mm (2.6 in)
1924
43.2 mm (1.7 in)
1925
58.4 mm (2.3 in)
1928
38.1 mm (1.5 in)
1929
76.3 mm (3.0 in)
1930
34.3 mm (1.4 in)
1931
41.9 mm (1.6 in)
1932
80.0 mm (3.1 in)
1933
31.9 mm (1.3 in)
1934
43.7 mm (1.7 in)
1935
75.2 mm (3.0 in)
1936
54.5 mm (2.1 in)
1937
51.6 mm (2.0 in)
1938
53.3 mm (2.1 in)
1939
65.1 mm (2.6 in)
1940
47.5 mm (1.9 in)
1941
46.5 mm (1.8 in)
1942
85.1 mm (3.4 in)
1943
33.0 mm (1.3 in)
1944
62.2 mm (2.4 in)
1945
31.0 mm (1.2 in)
1946
48.2 mm (1.9 in)
1947
65.0 mm (2.6 in)
1948
58.2 mm (2.3 in)
1949
26.6 mm (1.0 in)
1950
46.8 mm (1.8 in)
1951
63.8 mm (2.5 in)
1952
97.5 mm (3.8 in)
1953
53.1 mm (2.1 in)
1954
49.0 mm (1.9 in)
1955
74.2 mm (2.9 in)
1956
47.5 mm (1.9 in)
1957
30.5 mm (1.2 in)
1958
44.3 mm (1.7 in)
1959
55.6 mm (2.2 in)
1960
109.7 mm (4.3 in)
1961
16.8 mm (0.7 in)
1962
49.5 mm (1.9 in)
1963
63.5 mm (2.5 in)
1964
37.9 mm (1.5 in)
1965
68.6 mm (2.7 in)
1966
58.5 mm (2.3 in)
1967
84.9 mm (3.3 in)
1968
43.9 mm (1.7 in)
1969
50.9 mm (2.0 in)
1970
58.4 mm (2.3 in)
1971
50.3 mm (2.0 in)
1972
67.1 mm (2.6 in)
1973
28.0 mm (1.1 in)
1974
76.2 mm (3.0 in)
1975
59.4 mm (2.3 in)
1976
33.0 mm (1.3 in)
1977
43.7 mm (1.7 in)
1978
124.1 mm (4.9 in)
1979
55.9 mm (2.2 in)
1980
35.5 mm (1.4 in)
1981
49.8 mm (2.0 in)
1982
75.3 mm (3.0 in)
1983
67.0 mm (2.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Gravelbourg, 1911 to 1983. The record is 76 days in 1946, marked on the chart; the median year is 36 days.
Longest dry spell (CDD) at Gravelbourg by year
Year
Longest dry spell (CDD)
1911
28 days
1921
35 days
1922
33 days
1923
40 days
1924
27 days
1925
39 days
1928
41 days
1929
33 days
1930
30 days
1931
62 days
1932
48 days
1933
61 days
1934
46 days
1935
50 days
1936
53 days
1937
41 days
1938
33 days
1939
55 days
1940
37 days
1941
37 days
1942
21 days
1943
35 days
1944
53 days
1945
31 days
1946
76 days
1947
31 days
1948
36 days
1949
49 days
1950
36 days
1951
21 days
1952
39 days
1953
57 days
1954
34 days
1955
25 days
1956
39 days
1957
24 days
1958
29 days
1959
42 days
1960
56 days
1961
33 days
1962
30 days
1963
61 days
1964
54 days
1965
43 days
1966
59 days
1967
33 days
1968
38 days
1969
22 days
1970
30 days
1971
26 days
1972
27 days
1973
36 days
1974
38 days
1975
27 days
1976
57 days
1977
29 days
1978
19 days
1979
25 days
1980
38 days
1981
39 days
1982
21 days
1983
31 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 Gravelbourg falls on 28 May and the median first autumn frost on 11 September, which leaves a median of 102 days between them.
Fitted over all years, the growing season changes by +3.1 days per decade at this station.
Frost dates and growing season at Gravelbourg
Measure
Median, all years
Earliest period
Recent period (1948 to 1983)
Recent against earliest
Fitted trend
Last spring frost
28 May
n/a
28 May
n/a
+0.5 days per decade
First autumn frost
11 September
n/a
13 September
n/a
+3.6 days per decade
Growing days
102 days
n/a
102 days
n/a
+3.1 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
49 years, 1923 to 1983
A day with at least 34.8 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 72.9 mm (2.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Gravelbourg: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
34.8 mm (1.4 in)
5 years
46.1 mm (1.8 in)
10 years
53.2 mm (2.1 in)
25 years
61.5 mm (2.4 in)
50 years
67.4 mm (2.7 in)
Longer than the 49 years of record
100 years
72.9 mm (2.9 in)
Longer than the 49 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, 49 years of values from 1923 to 1983.
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: 78.7 mm (3.1 in) in 1952; 65.0 mm (2.6 in) in 1965; 64.1 mm (2.5 in) in 1978.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Gravelbourg standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Gravelbourg 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.