Record envelope, standing records and threshold days for Brady Aznoe (USC00241080), Montana, United States, with 71 years of record.
Key Facts for Brady Aznoe
Brady Aznoe (USC00241080) is a weather station in Montana, United States at 47.95 latitude and -111.33 longitude, 1,016 m (3,333 ft) above sea level.
The station reports from 1912 to 1982, 71 years of record.
1,464 records set at Brady Aznoe still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Brady Aznoe set a monthly record daily precipitation of 62.2 mm (2.4 in) on 29 June 1982.
About the Station
Location: Montana, United States, 47.95 latitude, -111.33 longitude.
Elevation: 1,016 m (3,333 ft).
Period of record: 1912 to 1982, 71 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
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 Brady Aznoe. 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 Brady Aznoe, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
18.9 C (66.0 F)
-42.8 C (-45.0 F)
n/a
n/a
Feb
21.1 C (70.0 F)
-41.7 C (-43.1 F)
n/a
n/a
Mar
25.0 C (77.0 F)
-37.2 C (-35.0 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-26.1 C (-15.0 F)
n/a
n/a
May
38.9 C (102.0 F)
-15.0 C (5.0 F)
n/a
n/a
Jun
41.1 C (106.0 F)
-2.8 C (27.0 F)
n/a
n/a
Jul
43.3 C (109.9 F)
-1.7 C (28.9 F)
n/a
n/a
Aug
43.3 C (109.9 F)
-1.7 C (28.9 F)
n/a
n/a
Sep
37.2 C (99.0 F)
-12.2 C (10.0 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-24.4 C (-11.9 F)
n/a
n/a
Nov
25.6 C (78.1 F)
-36.1 C (-33.0 F)
n/a
n/a
Dec
21.1 C (70.0 F)
-43.3 C (-45.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Brady Aznoe still stand. 1936 holds the most, with 67.
Standing records at Brady Aznoe by the year they were set
Year set
Standing records
1912
10
1913
17
1914
18
1915
10
1916
44
1917
27
1918
34
1919
46
1920
17
1921
23
1922
23
1923
14
1924
25
1925
32
1926
13
1927
15
1928
25
1929
18
1930
32
1931
20
1932
16
1933
18
1934
33
1935
28
1936
67
1937
15
1938
15
1939
37
1940
18
1941
5
1942
10
1943
13
1944
8
1945
9
1946
11
1947
5
1948
4
1949
11
1950
14
1951
20
1952
15
1953
20
1954
30
1955
20
1956
17
1957
23
1958
14
1959
23
1960
27
1961
24
1962
31
1963
26
1964
14
1965
22
1966
28
1967
31
1968
28
1969
30
1970
12
1971
26
1972
33
1973
21
1974
10
1975
12
1976
16
1977
18
1978
10
1979
11
1980
23
1981
18
1982
11
All-Time Record Progression
7 new records
7 all-time records were set at Brady Aznoe between 25 January 1957 and 12 February 1978. Each dot is a new record.
When Brady Aznoe set new all-time records
Date
Kind
Detail
1957-01-25
Record low minimum temperature
Record low minimum temperature -42.8 C (-45.0 F)
1968-12-29
Record low maximum temperature
Record low maximum temperature -32.8 C (-27.0 F)
1968-12-29
Record low minimum temperature
Record low minimum temperature -43.3 C (-45.9 F)
1975-04-08
Record snow depth
Record snow depth 45.7 cm (18.0 in)
1977-03-29
Record daily snowfall
Record daily snowfall 33.0 cm (13.0 in)
1978-02-11
Record snow depth
Record snow depth 48.3 cm (19.0 in)
1978-02-12
Record snow depth
Record snow depth 50.8 cm (20.0 in)
Wettest Day of Each Month
Aug: 69.9 mm (2.8 in)
The wettest day on record for each calendar month at Brady Aznoe. The most was 69.9 mm (2.8 in) on 21 August 1933.
Record daily precipitation for each month at Brady Aznoe
Month
Record daily precipitation (mm)
Date
Jan
25.4 mm (1.0 in)
25 January 1918
Feb
15.2 mm (0.6 in)
22 February 1937
Mar
42.9 mm (1.7 in)
30 March 1981
Apr
53.3 mm (2.1 in)
2 April 1934
May
53.1 mm (2.1 in)
25 May 1916
Jun
62.2 mm (2.4 in)
29 June 1982
Jul
61.0 mm (2.4 in)
17 July 1915
Aug
69.9 mm (2.8 in)
21 August 1933
Sep
49.0 mm (1.9 in)
24 September 1917
Oct
27.7 mm (1.1 in)
13 October 1975
Nov
24.6 mm (1.0 in)
12 November 1930
Dec
15.2 mm (0.6 in)
28 December 1923
Period of Record Coverage
1912 to 1982
Complete yearUnder 90 percent of days
71 years of record at Brady Aznoe, 1912 to 1982. 12 years have data for under 90 percent of days and are left out of rankings: 1912, 1940, 1941, 1942, 1943, 1944, 1947, 1948 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 49 complete years at Brady Aznoe, 1913 to 1980. Blue stripes are years cooler than the station's own mean of 6.1 C (43.1 F); red stripes are warmer. The coolest year was 1916, at 3.4 C (38.2 F), and the warmest was 1934, at 8.6 C (47.4 F). The strongest colour marks a difference of 2.8 C (5.0 F).
Annual mean temperature at Brady Aznoe as warming stripes, 1913 to 1980
Year
Annual mean temperature
Difference from the station mean
1913
5.6 C
-0.52 C
1914
6.3 C
+0.15 C
1915
6.2 C
+0.02 C
1916
3.4 C
-2.71 C
1917
4.6 C
-1.59 C
1920
6.3 C
+0.17 C
1921
7.2 C
+1.02 C
1922
5.5 C
-0.64 C
1923
7.0 C
+0.84 C
1924
5.8 C
-0.31 C
1925
7.2 C
+1.06 C
1926
7.6 C
+1.40 C
1927
4.6 C
-1.58 C
1928
7.1 C
+0.93 C
1929
5.3 C
-0.86 C
1930
7.2 C
+1.06 C
1931
8.4 C
+2.25 C
1932
6.5 C
+0.38 C
1933
6.8 C
+0.66 C
1934
8.6 C
+2.42 C
1935
6.3 C
+0.12 C
1936
6.4 C
+0.20 C
1937
5.5 C
-0.64 C
1938
7.2 C
+1.02 C
1939
8.2 C
+2.01 C
1945
6.2 C
+0.00 C
1952
6.1 C
-0.06 C
1953
7.4 C
+1.20 C
1954
6.1 C
-0.08 C
1955
4.2 C
-1.94 C
1956
5.9 C
-0.28 C
1958
6.7 C
+0.58 C
1959
5.4 C
-0.80 C
1960
5.8 C
-0.31 C
1961
7.2 C
+1.04 C
1962
6.5 C
+0.37 C
1963
7.1 C
+0.96 C
1965
4.9 C
-1.29 C
1966
5.5 C
-0.65 C
1967
6.1 C
-0.01 C
1968
5.6 C
-0.56 C
1969
4.6 C
-1.51 C
1970
5.5 C
-0.68 C
1971
5.5 C
-0.68 C
1972
5.0 C
-1.18 C
1976
7.1 C
+0.97 C
1977
6.1 C
-0.06 C
1978
4.2 C
-1.93 C
1980
6.1 C
-0.05 C
The fitted trend in annual mean temperature here over 1913 to 1980 is -0.1 C (-0.2 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.2 F (-0.4 to 0.1) per decade. The slope is a straight line fitted to 49 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Brady Aznoe
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.1 C (-0.2 to 0.1) per decade
-0.2 F (-0.4 to 0.1) per decade
1913 to 1980
49
Not clearly different from zero
Mean daily maximum
0.22 C (0.05 to 0.39) per decade
0.4 F (0.1 to 0.7) per decade
1913 to 1980
49
Rise
Mean daily minimum
-0.4 C (-0.6 to -0.3) per decade
-0.7 F (-1.0 to -0.5) per decade
1913 to 1980
49
Fall
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
1912 to 1982
Yearly extremes at Brady Aznoe: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
1933
37.2 C (99.0 F)
71
Coldest night (TNn)
-43.3 C (-45.9 F)
1968
-34.4 C (-29.9 F)
71
Wettest day (Rx1day)
69.9 mm (2.8 in)
1933
28.4 mm (1.1 in)
71
Wettest five days (Rx5day)
103.0 mm (4.1 in)
1927
48.0 mm (1.9 in)
71
Longest dry spell (CDD)
77 days
1955
36 days
71
Hottest day (TXx)
The hottest day of the year at Brady Aznoe, 1912 to 1982. The record is 43.3 C (109.9 F) in 1933, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Brady Aznoe by year
Year
Hottest day (TXx)
1912
36.7 C (98.1 F)
1913
36.7 C (98.1 F)
1914
37.8 C (100.0 F)
1915
35.6 C (96.1 F)
1916
33.3 C (91.9 F)
1917
38.3 C (100.9 F)
1918
37.2 C (99.0 F)
1919
40.6 C (105.1 F)
1920
37.2 C (99.0 F)
1921
38.3 C (100.9 F)
1922
37.2 C (99.0 F)
1923
36.1 C (97.0 F)
1924
36.7 C (98.1 F)
1925
38.9 C (102.0 F)
1926
38.3 C (100.9 F)
1927
36.1 C (97.0 F)
1928
37.8 C (100.0 F)
1929
40.0 C (104.0 F)
1930
39.4 C (102.9 F)
1931
41.1 C (106.0 F)
1932
38.9 C (102.0 F)
1933
43.3 C (109.9 F)
1934
40.0 C (104.0 F)
1935
41.7 C (107.1 F)
1936
42.2 C (108.0 F)
1937
39.4 C (102.9 F)
1938
36.1 C (97.0 F)
1939
38.9 C (102.0 F)
1940
38.9 C (102.0 F)
1941
38.3 C (100.9 F)
1942
36.7 C (98.1 F)
1943
35.0 C (95.0 F)
1944
35.6 C (96.1 F)
1945
37.8 C (100.0 F)
1946
35.6 C (96.1 F)
1947
36.7 C (98.1 F)
1948
35.6 C (96.1 F)
1949
40.0 C (104.0 F)
1950
35.0 C (95.0 F)
1951
37.8 C (100.0 F)
1952
35.6 C (96.1 F)
1953
38.3 C (100.9 F)
1954
37.2 C (99.0 F)
1955
35.0 C (95.0 F)
1956
36.1 C (97.0 F)
1957
36.7 C (98.1 F)
1958
36.1 C (97.0 F)
1959
37.8 C (100.0 F)
1960
40.0 C (104.0 F)
1961
43.3 C (109.9 F)
1962
35.6 C (96.1 F)
1963
37.8 C (100.0 F)
1964
37.8 C (100.0 F)
1965
35.0 C (95.0 F)
1966
35.6 C (96.1 F)
1967
37.2 C (99.0 F)
1968
36.1 C (97.0 F)
1969
37.8 C (100.0 F)
1970
37.8 C (100.0 F)
1971
38.3 C (100.9 F)
1972
35.6 C (96.1 F)
1973
40.0 C (104.0 F)
1974
37.2 C (99.0 F)
1975
37.2 C (99.0 F)
1976
36.1 C (97.0 F)
1977
35.6 C (96.1 F)
1978
35.0 C (95.0 F)
1979
36.7 C (98.1 F)
1980
36.7 C (98.1 F)
1981
38.3 C (100.9 F)
1982
33.3 C (91.9 F)
Coldest night (TNn)
The coldest night of the year at Brady Aznoe, 1912 to 1982. The record is -43.3 C (-45.9 F) in 1968, marked on the chart; the median year is -34.4 C (-29.9 F).
Coldest night (TNn) at Brady Aznoe by year
Year
Coldest night (TNn)
1912
-23.3 C (-9.9 F)
1913
-32.2 C (-26.0 F)
1914
-33.9 C (-29.0 F)
1915
-26.1 C (-15.0 F)
1916
-39.4 C (-38.9 F)
1917
-37.2 C (-35.0 F)
1918
-35.0 C (-31.0 F)
1919
-35.6 C (-32.1 F)
1920
-32.2 C (-26.0 F)
1921
-30.6 C (-23.1 F)
1922
-33.9 C (-29.0 F)
1923
-37.8 C (-36.0 F)
1924
-36.1 C (-33.0 F)
1925
-26.1 C (-15.0 F)
1926
-29.4 C (-20.9 F)
1927
-36.7 C (-34.1 F)
1928
-31.1 C (-24.0 F)
1929
-41.1 C (-42.0 F)
1930
-37.2 C (-35.0 F)
1931
-24.4 C (-11.9 F)
1932
-34.4 C (-29.9 F)
1933
-32.2 C (-26.0 F)
1934
-30.6 C (-23.1 F)
1935
-35.6 C (-32.1 F)
1936
-41.7 C (-43.1 F)
1937
-36.7 C (-34.1 F)
1938
-31.7 C (-25.1 F)
1939
-37.2 C (-35.0 F)
1940
-31.1 C (-24.0 F)
1941
-8.9 C (16.0 F)
1942
-13.9 C (7.0 F)
1943
-8.9 C (16.0 F)
1944
-22.2 C (-8.0 F)
1945
-32.2 C (-26.0 F)
1946
-30.0 C (-22.0 F)
1947
-6.7 C (19.9 F)
1948
-13.9 C (7.0 F)
1949
-30.0 C (-22.0 F)
1950
-30.6 C (-23.1 F)
1951
-37.2 C (-35.0 F)
1952
-37.2 C (-35.0 F)
1953
-25.6 C (-14.1 F)
1954
-41.1 C (-42.0 F)
1955
-34.4 C (-29.9 F)
1956
-35.6 C (-32.1 F)
1957
-42.8 C (-45.0 F)
1958
-30.0 C (-22.0 F)
1959
-37.2 C (-35.0 F)
1960
-36.1 C (-33.0 F)
1961
-35.6 C (-32.1 F)
1962
-37.8 C (-36.0 F)
1963
-34.4 C (-29.9 F)
1964
-35.0 C (-31.0 F)
1965
-29.4 C (-20.9 F)
1966
-33.3 C (-27.9 F)
1967
-32.8 C (-27.0 F)
1968
-43.3 C (-45.9 F)
1969
-39.4 C (-38.9 F)
1970
-30.6 C (-23.1 F)
1971
-38.9 C (-38.0 F)
1972
-38.3 C (-36.9 F)
1973
-31.7 C (-25.1 F)
1974
-36.7 C (-34.1 F)
1975
-30.6 C (-23.1 F)
1976
-29.4 C (-20.9 F)
1977
-36.1 C (-33.0 F)
1978
-35.6 C (-32.1 F)
1979
-36.7 C (-34.1 F)
1980
-35.0 C (-31.0 F)
1981
-29.4 C (-20.9 F)
1982
-36.7 C (-34.1 F)
Wettest day (Rx1day)
The wettest day of the year at Brady Aznoe, 1912 to 1982. The record is 69.9 mm (2.8 in) in 1933, marked on the chart; the median year is 28.4 mm (1.1 in).
Wettest day (Rx1day) at Brady Aznoe by year
Year
Wettest day (Rx1day)
1912
28.4 mm (1.1 in)
1913
22.9 mm (0.9 in)
1914
38.6 mm (1.5 in)
1915
61.0 mm (2.4 in)
1916
53.1 mm (2.1 in)
1917
49.0 mm (1.9 in)
1918
25.4 mm (1.0 in)
1919
35.6 mm (1.4 in)
1920
21.6 mm (0.9 in)
1921
27.9 mm (1.1 in)
1922
27.4 mm (1.1 in)
1923
33.3 mm (1.3 in)
1924
24.6 mm (1.0 in)
1925
44.2 mm (1.7 in)
1926
39.6 mm (1.6 in)
1927
38.1 mm (1.5 in)
1928
22.4 mm (0.9 in)
1929
25.4 mm (1.0 in)
1930
31.8 mm (1.3 in)
1931
27.7 mm (1.1 in)
1932
22.6 mm (0.9 in)
1933
69.9 mm (2.8 in)
1934
53.3 mm (2.1 in)
1935
17.8 mm (0.7 in)
1936
15.2 mm (0.6 in)
1937
61.2 mm (2.4 in)
1938
15.2 mm (0.6 in)
1939
30.0 mm (1.2 in)
1940
28.7 mm (1.1 in)
1941
30.0 mm (1.2 in)
1942
14.7 mm (0.6 in)
1943
41.1 mm (1.6 in)
1944
33.0 mm (1.3 in)
1945
27.7 mm (1.1 in)
1946
36.8 mm (1.4 in)
1947
38.9 mm (1.5 in)
1948
23.6 mm (0.9 in)
1949
24.6 mm (1.0 in)
1950
20.8 mm (0.8 in)
1951
29.5 mm (1.2 in)
1952
27.9 mm (1.1 in)
1953
49.0 mm (1.9 in)
1954
38.4 mm (1.5 in)
1955
35.8 mm (1.4 in)
1956
14.0 mm (0.6 in)
1957
25.7 mm (1.0 in)
1958
25.9 mm (1.0 in)
1959
23.6 mm (0.9 in)
1960
21.1 mm (0.8 in)
1961
27.4 mm (1.1 in)
1962
21.8 mm (0.9 in)
1963
14.2 mm (0.6 in)
1964
47.8 mm (1.9 in)
1965
29.2 mm (1.1 in)
1966
30.0 mm (1.2 in)
1967
25.9 mm (1.0 in)
1968
43.2 mm (1.7 in)
1969
42.9 mm (1.7 in)
1970
31.0 mm (1.2 in)
1971
25.4 mm (1.0 in)
1972
19.6 mm (0.8 in)
1973
20.6 mm (0.8 in)
1974
28.4 mm (1.1 in)
1975
43.4 mm (1.7 in)
1976
20.8 mm (0.8 in)
1977
27.2 mm (1.1 in)
1978
31.8 mm (1.3 in)
1979
12.4 mm (0.5 in)
1980
40.1 mm (1.6 in)
1981
42.9 mm (1.7 in)
1982
62.2 mm (2.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Brady Aznoe, 1912 to 1982. The record is 103.0 mm (4.1 in) in 1927, marked on the chart; the median year is 48.0 mm (1.9 in).
Wettest five days (Rx5day) at Brady Aznoe by year
Year
Wettest five days (Rx5day)
1912
56.9 mm (2.2 in)
1913
39.3 mm (1.5 in)
1914
46.2 mm (1.8 in)
1915
70.4 mm (2.8 in)
1916
76.2 mm (3.0 in)
1917
53.1 mm (2.1 in)
1918
30.0 mm (1.2 in)
1919
38.1 mm (1.5 in)
1920
26.5 mm (1.0 in)
1921
32.3 mm (1.3 in)
1922
31.7 mm (1.2 in)
1923
61.8 mm (2.4 in)
1924
50.7 mm (2.0 in)
1925
60.5 mm (2.4 in)
1926
50.2 mm (2.0 in)
1927
103.0 mm (4.1 in)
1928
50.8 mm (2.0 in)
1929
38.6 mm (1.5 in)
1930
34.8 mm (1.4 in)
1931
47.5 mm (1.9 in)
1932
34.8 mm (1.4 in)
1933
98.4 mm (3.9 in)
1934
63.7 mm (2.5 in)
1935
30.0 mm (1.2 in)
1936
23.1 mm (0.9 in)
1937
68.1 mm (2.7 in)
1938
33.6 mm (1.3 in)
1939
34.0 mm (1.3 in)
1940
48.0 mm (1.9 in)
1941
66.5 mm (2.6 in)
1942
27.8 mm (1.1 in)
1943
92.9 mm (3.7 in)
1944
43.7 mm (1.7 in)
1945
61.0 mm (2.4 in)
1946
48.3 mm (1.9 in)
1947
59.0 mm (2.3 in)
1948
42.6 mm (1.7 in)
1949
30.2 mm (1.2 in)
1950
37.8 mm (1.5 in)
1951
57.1 mm (2.2 in)
1952
30.5 mm (1.2 in)
1953
91.0 mm (3.6 in)
1954
48.3 mm (1.9 in)
1955
54.4 mm (2.1 in)
1956
25.6 mm (1.0 in)
1957
46.6 mm (1.8 in)
1958
73.7 mm (2.9 in)
1959
49.0 mm (1.9 in)
1960
42.0 mm (1.7 in)
1961
38.3 mm (1.5 in)
1962
26.2 mm (1.0 in)
1963
29.5 mm (1.2 in)
1964
91.2 mm (3.6 in)
1965
47.4 mm (1.9 in)
1966
65.6 mm (2.6 in)
1967
35.6 mm (1.4 in)
1968
52.6 mm (2.1 in)
1969
88.1 mm (3.5 in)
1970
51.0 mm (2.0 in)
1971
41.9 mm (1.6 in)
1972
27.2 mm (1.1 in)
1973
35.3 mm (1.4 in)
1974
47.4 mm (1.9 in)
1975
79.3 mm (3.1 in)
1976
49.1 mm (1.9 in)
1977
43.7 mm (1.7 in)
1978
54.6 mm (2.1 in)
1979
26.0 mm (1.0 in)
1980
58.1 mm (2.3 in)
1981
49.3 mm (1.9 in)
1982
83.6 mm (3.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Brady Aznoe, 1912 to 1982. The record is 77 days in 1955, marked on the chart; the median year is 36 days.
Longest dry spell (CDD) at Brady Aznoe by year
Year
Longest dry spell (CDD)
1912
35 days
1913
45 days
1914
34 days
1915
34 days
1916
30 days
1917
33 days
1918
22 days
1919
47 days
1920
49 days
1921
34 days
1922
40 days
1923
28 days
1924
27 days
1925
34 days
1926
44 days
1927
24 days
1928
29 days
1929
37 days
1930
33 days
1931
46 days
1932
23 days
1933
30 days
1934
27 days
1935
43 days
1936
26 days
1937
36 days
1938
34 days
1939
39 days
1940
29 days
1941
23 days
1942
30 days
1943
27 days
1944
26 days
1945
49 days
1946
19 days
1947
24 days
1948
36 days
1949
25 days
1950
35 days
1951
29 days
1952
48 days
1953
48 days
1954
68 days
1955
77 days
1956
61 days
1957
60 days
1958
25 days
1959
43 days
1960
76 days
1961
58 days
1962
41 days
1963
60 days
1964
60 days
1965
49 days
1966
40 days
1967
35 days
1968
50 days
1969
57 days
1970
47 days
1971
50 days
1972
29 days
1973
60 days
1974
49 days
1975
31 days
1976
56 days
1977
40 days
1978
33 days
1979
37 days
1980
25 days
1981
62 days
1982
30 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
49 years with a frost
Across 49 years with a frost, the median last spring frost at Brady Aznoe falls on 29 May and the median first autumn frost on 14 September, which leaves a median of 108 days between them.
Fitted over all years, the growing season changes by -6.9 days per decade at this station.
Frost dates and growing season at Brady Aznoe
Measure
Median, all years
Earliest period
Recent period (1934 to 1980)
Recent against earliest
Fitted trend
Last spring frost
29 May
n/a
29 May
n/a
+2.9 days per decade
First autumn frost
14 September
n/a
9 September
n/a
-4.0 days per decade
Growing days
108 days
n/a
102 days
n/a
-6.9 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
59 years, 1913 to 1981
A day with at least 29.6 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 74.2 mm (2.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Brady Aznoe: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
29.6 mm (1.2 in)
5 years
41.0 mm (1.6 in)
10 years
48.7 mm (1.9 in)
25 years
58.7 mm (2.3 in)
50 years
66.4 mm (2.6 in)
100 years
74.2 mm (2.9 in)
Longer than the 59 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, 59 years of values from 1913 to 1981.
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: 69.9 mm (2.8 in) in 1933; 61.2 mm (2.4 in) in 1937; 61.0 mm (2.4 in) in 1915.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Brady Aznoe, at 1952. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1952 ran 0.3 C (0.5 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Brady Aznoe, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1952
-0.3
-0.5
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 Brady Aznoe standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Brady Aznoe 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.