Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Graysville. 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 Graysville, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
10.0 C (50.0 F)
-46.7 C (-52.1 F)
n/a
n/a
Feb
12.2 C (54.0 F)
-43.3 C (-45.9 F)
n/a
n/a
Mar
23.3 C (73.9 F)
-41.1 C (-42.0 F)
n/a
n/a
Apr
37.0 C (98.6 F)
-26.5 C (-15.7 F)
n/a
n/a
May
39.5 C (103.1 F)
-15.0 C (5.0 F)
n/a
n/a
Jun
38.3 C (100.9 F)
-3.3 C (26.1 F)
n/a
n/a
Jul
40.0 C (104.0 F)
2.2 C (36.0 F)
n/a
n/a
Aug
40.0 C (104.0 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
39.0 C (102.2 F)
-9.4 C (15.1 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-18.3 C (-0.9 F)
n/a
n/a
Nov
24.4 C (75.9 F)
-31.7 C (-25.1 F)
n/a
n/a
Dec
16.7 C (62.1 F)
-38.9 C (-38.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Graysville still stand. 1936 holds the most, with 62.
Standing records at Graysville by the year they were set
Year set
Standing records
1925
12
1926
39
1927
14
1928
32
1929
28
1930
19
1931
41
1932
36
1933
24
1934
30
1935
26
1936
62
1937
19
1938
31
1939
39
1940
26
1941
28
1942
30
1943
17
1944
20
1945
27
1946
30
1947
28
1948
18
1949
30
1950
52
1951
25
1952
18
1953
11
1954
17
1955
21
1956
23
1957
9
1958
28
1959
20
1960
12
1961
25
1962
22
1963
25
1964
31
1965
14
1966
30
1967
23
1968
25
1969
16
1970
13
1971
11
1972
22
1973
21
1974
17
1975
12
1976
28
1977
30
1978
17
1979
21
1980
31
1981
35
1982
18
1983
35
Wettest Day of Each Month
Aug: 110.0 mm (4.3 in)
The wettest day on record for each calendar month at Graysville. The most was 110.0 mm (4.3 in) on 30 August 1944.
Record daily precipitation for each month at Graysville
Month
Record daily precipitation (mm)
Date
Jan
30.0 mm (1.2 in)
25 January 1981
Feb
38.1 mm (1.5 in)
25 February 1930
Mar
38.1 mm (1.5 in)
13 March 1971
Apr
47.0 mm (1.9 in)
19 April 1967
May
46.0 mm (1.8 in)
13 May 1962
Jun
62.7 mm (2.5 in)
20 June 1927
Jul
76.2 mm (3.0 in)
2 July 1966
Aug
110.0 mm (4.3 in)
30 August 1944
Sep
76.7 mm (3.0 in)
4 September 1941
Oct
35.6 mm (1.4 in)
10 October 1949
Nov
27.9 mm (1.1 in)
24 November 1958
Dec
25.4 mm (1.0 in)
15 December 1948
Period of Record Coverage
1925 to 1983
Complete yearUnder 90 percent of days
59 years of record at Graysville, 1925 to 1983. 14 years have data for under 90 percent of days and are left out of rankings: 1925, 1934, 1938, 1939, 1943, 1944, 1952, 1953 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 37 complete years at Graysville, 1926 to 1983. Blue stripes are years cooler than the station's own mean of 2.4 C (36.3 F); red stripes are warmer. The coolest year was 1950, at 0.0 C (32.1 F), and the warmest was 1981, at 5.0 C (41.0 F). The strongest colour marks a difference of 2.7 C (4.9 F).
Annual mean temperature at Graysville as warming stripes, 1926 to 1983
Year
Annual mean temperature
Difference from the station mean
1926
2.6 C
+0.22 C
1927
2.1 C
-0.28 C
1928
4.2 C
+1.81 C
1929
1.8 C
-0.59 C
1933
2.2 C
-0.19 C
1936
1.2 C
-1.22 C
1940
3.5 C
+1.12 C
1941
3.8 C
+1.37 C
1946
2.9 C
+0.52 C
1947
2.8 C
+0.37 C
1948
2.1 C
-0.31 C
1949
2.4 C
+0.02 C
1950
0.0 C
-2.36 C
1951
0.7 C
-1.74 C
1954
2.7 C
+0.26 C
1956
2.0 C
-0.35 C
1961
3.6 C
+1.25 C
1964
2.2 C
-0.21 C
1965
1.2 C
-1.16 C
1966
1.1 C
-1.32 C
1967
1.7 C
-0.70 C
1968
2.2 C
-0.15 C
1969
2.1 C
-0.34 C
1970
1.6 C
-0.84 C
1971
2.1 C
-0.28 C
1972
1.2 C
-1.20 C
1973
3.8 C
+1.39 C
1974
2.1 C
-0.32 C
1975
2.9 C
+0.51 C
1976
3.0 C
+0.57 C
1977
4.0 C
+1.56 C
1978
2.0 C
-0.36 C
1979
1.0 C
-1.43 C
1980
3.2 C
+0.85 C
1981
5.0 C
+2.63 C
1982
2.1 C
-0.34 C
1983
3.7 C
+1.31 C
The fitted trend in annual mean temperature here over 1926 to 1983 is 0.04 C (-0.16 to 0.25) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.3 to 0.4) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Graysville
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.04 C (-0.16 to 0.25) per decade
0.1 F (-0.3 to 0.4) per decade
1926 to 1983
37
Not clearly different from zero
Mean daily maximum
0.3 C (0.1 to 0.5) per decade
0.5 F (0.1 to 0.9) per decade
1926 to 1983
37
Rise
Mean daily minimum
-0.19 C (-0.41 to 0.03) per decade
-0.3 F (-0.7 to 0.1) per decade
1926 to 1983
37
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
1925 to 1983
Yearly extremes at Graysville: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1936
35.6 C (96.1 F)
59
Coldest night (TNn)
-46.7 C (-52.1 F)
1949
-36.1 C (-33.0 F)
59
Wettest day (Rx1day)
110.0 mm (4.3 in)
1944
38.1 mm (1.5 in)
59
Wettest five days (Rx5day)
185.6 mm (7.3 in)
1944
55.9 mm (2.2 in)
59
Longest dry spell (CDD)
65 days
1952
28 days
59
Hottest day (TXx)
The hottest day of the year at Graysville, 1925 to 1983. The record is 40.0 C (104.0 F) in 1936, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Graysville by year
Year
Hottest day (TXx)
1925
35.6 C (96.1 F)
1926
36.1 C (97.0 F)
1927
31.7 C (89.1 F)
1928
35.0 C (95.0 F)
1929
36.1 C (97.0 F)
1930
33.3 C (91.9 F)
1931
37.8 C (100.0 F)
1932
33.9 C (93.0 F)
1933
36.7 C (98.1 F)
1934
38.3 C (100.9 F)
1935
34.4 C (93.9 F)
1936
40.0 C (104.0 F)
1937
35.0 C (95.0 F)
1938
34.4 C (93.9 F)
1939
36.7 C (98.1 F)
1940
37.8 C (100.0 F)
1941
36.1 C (97.0 F)
1942
35.0 C (95.0 F)
1943
32.2 C (90.0 F)
1944
34.4 C (93.9 F)
1945
36.1 C (97.0 F)
1946
40.0 C (104.0 F)
1947
37.2 C (99.0 F)
1948
35.0 C (95.0 F)
1949
40.0 C (104.0 F)
1950
33.9 C (93.0 F)
1951
34.4 C (93.9 F)
1952
32.2 C (90.0 F)
1953
32.2 C (90.0 F)
1954
32.2 C (90.0 F)
1955
36.1 C (97.0 F)
1956
35.0 C (95.0 F)
1957
35.0 C (95.0 F)
1958
34.4 C (93.9 F)
1959
36.1 C (97.0 F)
1960
36.1 C (97.0 F)
1961
38.3 C (100.9 F)
1962
33.9 C (93.0 F)
1963
33.3 C (91.9 F)
1964
39.4 C (102.9 F)
1965
36.1 C (97.0 F)
1966
34.4 C (93.9 F)
1967
35.0 C (95.0 F)
1968
35.6 C (96.1 F)
1969
35.6 C (96.1 F)
1970
37.8 C (100.0 F)
1971
35.6 C (96.1 F)
1972
35.0 C (95.0 F)
1973
36.7 C (98.1 F)
1974
35.0 C (95.0 F)
1975
38.3 C (100.9 F)
1976
38.3 C (100.9 F)
1977
34.4 C (93.9 F)
1978
38.0 C (100.4 F)
1979
38.0 C (100.4 F)
1980
39.5 C (103.1 F)
1981
38.0 C (100.4 F)
1982
35.0 C (95.0 F)
1983
40.0 C (104.0 F)
Coldest night (TNn)
The coldest night of the year at Graysville, 1925 to 1983. The record is -46.7 C (-52.1 F) in 1949, marked on the chart; the median year is -36.1 C (-33.0 F).
Coldest night (TNn) at Graysville by year
Year
Coldest night (TNn)
1925
-28.3 C (-18.9 F)
1926
-31.7 C (-25.1 F)
1927
-36.1 C (-33.0 F)
1928
-30.6 C (-23.1 F)
1929
-35.0 C (-31.0 F)
1930
-38.3 C (-36.9 F)
1931
-28.3 C (-18.9 F)
1932
-33.3 C (-27.9 F)
1933
-39.4 C (-38.9 F)
1934
-37.2 C (-35.0 F)
1935
-38.9 C (-38.0 F)
1936
-41.7 C (-43.1 F)
1937
-39.4 C (-38.9 F)
1938
-35.0 C (-31.0 F)
1939
-40.6 C (-41.1 F)
1940
-34.4 C (-29.9 F)
1941
-38.3 C (-36.9 F)
1942
-35.0 C (-31.0 F)
1943
-41.7 C (-43.1 F)
1944
-32.2 C (-26.0 F)
1945
-34.4 C (-29.9 F)
1946
-35.6 C (-32.1 F)
1947
-34.4 C (-29.9 F)
1948
-40.0 C (-40.0 F)
1949
-46.7 C (-52.1 F)
1950
-39.4 C (-38.9 F)
1951
-39.4 C (-38.9 F)
1952
-33.3 C (-27.9 F)
1953
-32.2 C (-26.0 F)
1954
-36.7 C (-34.1 F)
1955
-35.0 C (-31.0 F)
1956
-37.2 C (-35.0 F)
1957
-34.4 C (-29.9 F)
1958
-37.8 C (-36.0 F)
1959
-36.1 C (-33.0 F)
1960
-30.0 C (-22.0 F)
1961
-35.6 C (-32.1 F)
1962
-41.1 C (-42.0 F)
1963
-36.1 C (-33.0 F)
1964
-35.0 C (-31.0 F)
1965
-34.4 C (-29.9 F)
1966
-43.3 C (-45.9 F)
1967
-40.6 C (-41.1 F)
1968
-40.0 C (-40.0 F)
1969
-34.4 C (-29.9 F)
1970
-36.1 C (-33.0 F)
1971
-35.6 C (-32.1 F)
1972
-40.0 C (-40.0 F)
1973
-36.7 C (-34.1 F)
1974
-37.8 C (-36.0 F)
1975
-35.0 C (-31.0 F)
1976
-33.9 C (-29.0 F)
1977
-35.0 C (-31.0 F)
1978
-36.0 C (-32.8 F)
1979
-39.0 C (-38.2 F)
1980
-34.0 C (-29.2 F)
1981
-34.0 C (-29.2 F)
1982
-39.0 C (-38.2 F)
1983
-37.0 C (-34.6 F)
Wettest day (Rx1day)
The wettest day of the year at Graysville, 1925 to 1983. The record is 110.0 mm (4.3 in) in 1944, marked on the chart; the median year is 38.1 mm (1.5 in).
Wettest day (Rx1day) at Graysville by year
Year
Wettest day (Rx1day)
1925
32.3 mm (1.3 in)
1926
36.8 mm (1.4 in)
1927
62.7 mm (2.5 in)
1928
52.3 mm (2.1 in)
1929
24.4 mm (1.0 in)
1930
38.1 mm (1.5 in)
1931
27.9 mm (1.1 in)
1932
26.7 mm (1.1 in)
1933
21.3 mm (0.8 in)
1934
22.4 mm (0.9 in)
1935
31.8 mm (1.3 in)
1936
38.6 mm (1.5 in)
1937
45.7 mm (1.8 in)
1938
25.4 mm (1.0 in)
1939
22.9 mm (0.9 in)
1940
29.0 mm (1.1 in)
1941
76.7 mm (3.0 in)
1942
32.0 mm (1.3 in)
1943
37.3 mm (1.5 in)
1944
110.0 mm (4.3 in)
1945
51.8 mm (2.0 in)
1946
37.8 mm (1.5 in)
1947
39.1 mm (1.5 in)
1948
41.9 mm (1.6 in)
1949
35.6 mm (1.4 in)
1950
38.9 mm (1.5 in)
1951
24.6 mm (1.0 in)
1952
45.7 mm (1.8 in)
1953
15.2 mm (0.6 in)
1954
28.2 mm (1.1 in)
1955
42.9 mm (1.7 in)
1956
36.8 mm (1.4 in)
1957
40.1 mm (1.6 in)
1958
31.8 mm (1.3 in)
1959
57.2 mm (2.3 in)
1960
24.1 mm (0.9 in)
1961
27.9 mm (1.1 in)
1962
46.0 mm (1.8 in)
1963
56.6 mm (2.2 in)
1964
58.4 mm (2.3 in)
1965
40.1 mm (1.6 in)
1966
76.2 mm (3.0 in)
1967
48.8 mm (1.9 in)
1968
86.6 mm (3.4 in)
1969
44.5 mm (1.8 in)
1970
32.3 mm (1.3 in)
1971
38.1 mm (1.5 in)
1972
34.5 mm (1.4 in)
1973
28.2 mm (1.1 in)
1974
46.7 mm (1.8 in)
1975
41.4 mm (1.6 in)
1976
33.8 mm (1.3 in)
1977
43.7 mm (1.7 in)
1978
55.0 mm (2.2 in)
1979
24.1 mm (0.9 in)
1980
48.8 mm (1.9 in)
1981
44.0 mm (1.7 in)
1982
46.2 mm (1.8 in)
1983
25.0 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Graysville, 1925 to 1983. The record is 185.6 mm (7.3 in) in 1944, marked on the chart; the median year is 55.9 mm (2.2 in).
Wettest five days (Rx5day) at Graysville by year
Year
Wettest five days (Rx5day)
1925
49.1 mm (1.9 in)
1926
91.9 mm (3.6 in)
1927
114.8 mm (4.5 in)
1928
110.5 mm (4.4 in)
1929
33.8 mm (1.3 in)
1930
58.5 mm (2.3 in)
1931
33.0 mm (1.3 in)
1932
59.5 mm (2.3 in)
1933
41.1 mm (1.6 in)
1934
37.6 mm (1.5 in)
1935
49.8 mm (2.0 in)
1936
42.7 mm (1.7 in)
1937
116.8 mm (4.6 in)
1938
49.5 mm (1.9 in)
1939
41.4 mm (1.6 in)
1940
62.5 mm (2.5 in)
1941
150.8 mm (5.9 in)
1942
53.3 mm (2.1 in)
1943
64.8 mm (2.6 in)
1944
185.6 mm (7.3 in)
1945
89.6 mm (3.5 in)
1946
48.0 mm (1.9 in)
1947
55.9 mm (2.2 in)
1948
49.8 mm (2.0 in)
1949
49.3 mm (1.9 in)
1950
62.9 mm (2.5 in)
1951
33.0 mm (1.3 in)
1952
55.3 mm (2.2 in)
1953
27.9 mm (1.1 in)
1954
53.4 mm (2.1 in)
1955
45.9 mm (1.8 in)
1956
70.3 mm (2.8 in)
1957
52.2 mm (2.1 in)
1958
55.2 mm (2.2 in)
1959
73.2 mm (2.9 in)
1960
37.4 mm (1.5 in)
1961
48.3 mm (1.9 in)
1962
60.2 mm (2.4 in)
1963
94.9 mm (3.7 in)
1964
60.5 mm (2.4 in)
1965
59.4 mm (2.3 in)
1966
131.6 mm (5.2 in)
1967
84.6 mm (3.3 in)
1968
88.6 mm (3.5 in)
1969
91.2 mm (3.6 in)
1970
55.9 mm (2.2 in)
1971
74.7 mm (2.9 in)
1972
53.6 mm (2.1 in)
1973
50.3 mm (2.0 in)
1974
81.0 mm (3.2 in)
1975
53.5 mm (2.1 in)
1976
50.8 mm (2.0 in)
1977
76.8 mm (3.0 in)
1978
85.9 mm (3.4 in)
1979
47.9 mm (1.9 in)
1980
61.0 mm (2.4 in)
1981
49.0 mm (1.9 in)
1982
63.2 mm (2.5 in)
1983
43.0 mm (1.7 in)
Longest dry spell (CDD)
The longest dry spell of the year at Graysville, 1925 to 1983. The record is 65 days in 1952, marked on the chart; the median year is 28 days.
Longest dry spell (CDD) at Graysville by year
Year
Longest dry spell (CDD)
1925
28 days
1926
31 days
1927
27 days
1928
28 days
1929
24 days
1930
33 days
1931
32 days
1932
20 days
1933
27 days
1934
30 days
1935
42 days
1936
34 days
1937
33 days
1938
52 days
1939
64 days
1940
26 days
1941
28 days
1942
31 days
1943
34 days
1944
32 days
1945
33 days
1946
20 days
1947
16 days
1948
24 days
1949
24 days
1950
25 days
1951
21 days
1952
65 days
1953
21 days
1954
19 days
1955
24 days
1956
39 days
1957
29 days
1958
18 days
1959
17 days
1960
22 days
1961
36 days
1962
20 days
1963
30 days
1964
38 days
1965
35 days
1966
18 days
1967
37 days
1968
16 days
1969
29 days
1970
20 days
1971
18 days
1972
22 days
1973
34 days
1974
23 days
1975
35 days
1976
24 days
1977
29 days
1978
22 days
1979
21 days
1980
43 days
1981
31 days
1982
19 days
1983
19 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
37 years with a frost
Across 37 years with a frost, the median last spring frost at Graysville falls on 20 May and the median first autumn frost on 18 September, which leaves a median of 117 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 Graysville
Measure
Median, all years
Earliest period
Recent period (1941 to 1983)
Recent against earliest
Fitted trend
Last spring frost
20 May
n/a
20 May
n/a
-1.6 days per decade
First autumn frost
18 September
n/a
17 September
n/a
-1.3 days per decade
Growing days
117 days
n/a
117 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
42 years, 1926 to 1983
A day with at least 37.4 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 93.8 mm (3.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Graysville: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
37.4 mm (1.5 in)
5 years
50.4 mm (2.0 in)
10 years
59.7 mm (2.4 in)
25 years
72.6 mm (2.9 in)
50 years
82.9 mm (3.3 in)
Longer than the 42 years of record
100 years
93.8 mm (3.7 in)
Longer than the 42 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, 42 years of values from 1926 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: 86.6 mm (3.4 in) in 1968; 76.7 mm (3.0 in) in 1941; 76.2 mm (3.0 in) in 1966.
Download the Data
Data for Graysville standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Graysville 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.