Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Birtle. 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 Birtle, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
6.7 C (44.1 F)
-45.6 C (-50.1 F)
n/a
n/a
Feb
10.0 C (50.0 F)
-44.4 C (-47.9 F)
n/a
n/a
Mar
18.3 C (64.9 F)
-45.6 C (-50.1 F)
n/a
n/a
Apr
34.0 C (93.2 F)
-28.9 C (-20.0 F)
n/a
n/a
May
36.5 C (97.7 F)
-13.5 C (7.7 F)
n/a
n/a
Jun
40.6 C (105.1 F)
-6.1 C (21.0 F)
n/a
n/a
Jul
40.0 C (104.0 F)
-4.4 C (24.1 F)
n/a
n/a
Aug
38.3 C (100.9 F)
-4.0 C (24.8 F)
n/a
n/a
Sep
37.2 C (99.0 F)
-12.8 C (9.0 F)
n/a
n/a
Oct
31.1 C (88.0 F)
-26.7 C (-16.1 F)
n/a
n/a
Nov
18.9 C (66.0 F)
-34.4 C (-29.9 F)
n/a
n/a
Dec
13.3 C (55.9 F)
-43.0 C (-45.4 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Birtle still stand. 1917 holds the most, with 52.
Standing records at Birtle by the year they were set
Year set
Standing records
1904
12
1905
16
1906
16
1907
22
1908
18
1909
9
1911
1
1915
11
1916
28
1917
52
1918
38
1919
50
1920
18
1921
26
1922
9
1923
18
1924
20
1925
19
1926
25
1927
19
1928
18
1929
17
1930
25
1931
33
1932
23
1933
6
1934
32
1935
22
1936
51
1937
18
1938
11
1939
40
1940
15
1941
24
1942
16
1943
19
1944
11
1945
29
1946
30
1947
16
1948
19
1949
21
1950
24
1951
21
1952
11
1953
19
1954
15
1955
11
1956
17
1957
14
1958
27
1959
11
1960
5
1961
21
1962
18
1963
20
1964
21
1965
15
1966
20
1967
6
1968
18
1969
17
1970
12
1971
2
1972
18
1973
19
1974
13
1975
10
1976
14
1977
27
1978
14
1979
6
1980
24
1981
20
1982
8
1983
23
Wettest Day of Each Month
Jun: 129.5 mm (5.1 in)
The wettest day on record for each calendar month at Birtle. The most was 129.5 mm (5.1 in) on 23 June 1922.
Record daily precipitation for each month at Birtle
Month
Record daily precipitation (mm)
Date
Jan
26.7 mm (1.1 in)
3 January 1962
Feb
22.9 mm (0.9 in)
27 February 1969
Mar
38.6 mm (1.5 in)
27 March 1956
Apr
91.7 mm (3.6 in)
29 April 1884
May
65.3 mm (2.6 in)
31 May 1909
Jun
129.5 mm (5.1 in)
23 June 1922
Jul
95.3 mm (3.8 in)
23 July 1920
Aug
97.8 mm (3.9 in)
5 August 1885
Sep
63.5 mm (2.5 in)
6 September 1890
Oct
54.6 mm (2.1 in)
1 October 1905
Nov
26.7 mm (1.1 in)
5 November 1956
Dec
20.3 mm (0.8 in)
30 December 1965
Period of Record Coverage
1904 to 1983
Complete yearUnder 90 percent of days
76 years of record at Birtle, 1904 to 1983. 13 years have data for under 90 percent of days and are left out of rankings: 1904, 1905, 1906, 1907, 1908, 1909, 1911, 1915 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 59 complete years at Birtle, 1905 to 1983. Blue stripes are years cooler than the station's own mean of 1.1 C (34.0 F); red stripes are warmer. The coolest year was 1950, at -1.3 C (29.7 F), and the warmest was 1931, at 4.0 C (39.1 F). The strongest colour marks a difference of 2.9 C (5.2 F).
Annual mean temperature at Birtle as warming stripes, 1905 to 1983
Year
Annual mean temperature
Difference from the station mean
1905
1.3 C
+0.15 C
1906
2.0 C
+0.87 C
1916
-1.2 C
-2.28 C
1917
-1.2 C
-2.30 C
1918
0.9 C
-0.21 C
1919
0.3 C
-0.81 C
1920
1.0 C
-0.14 C
1924
-0.2 C
-1.35 C
1925
0.7 C
-0.44 C
1926
1.2 C
+0.05 C
1928
1.7 C
+0.61 C
1929
0.0 C
-1.15 C
1930
1.6 C
+0.52 C
1931
4.0 C
+2.86 C
1934
2.4 C
+1.31 C
1935
0.3 C
-0.83 C
1936
0.0 C
-1.12 C
1937
0.9 C
-0.18 C
1938
2.3 C
+1.19 C
1939
2.1 C
+1.03 C
1941
2.1 C
+0.96 C
1942
1.5 C
+0.42 C
1943
1.1 C
-0.05 C
1944
1.9 C
+0.81 C
1945
0.4 C
-0.72 C
1946
1.3 C
+0.16 C
1947
0.7 C
-0.44 C
1948
0.8 C
-0.28 C
1949
0.9 C
-0.24 C
1950
-1.3 C
-2.37 C
1953
2.9 C
+1.79 C
1954
1.7 C
+0.59 C
1955
0.5 C
-0.63 C
1956
0.6 C
-0.49 C
1957
1.3 C
+0.19 C
1958
2.0 C
+0.86 C
1959
1.2 C
+0.05 C
1960
1.2 C
+0.10 C
1961
1.8 C
+0.72 C
1962
1.2 C
+0.08 C
1963
2.2 C
+1.04 C
1964
1.0 C
-0.15 C
1965
-0.2 C
-1.32 C
1966
-0.4 C
-1.48 C
1967
0.6 C
-0.47 C
1968
1.0 C
-0.07 C
1970
0.1 C
-0.99 C
1971
0.9 C
-0.21 C
1972
-0.1 C
-1.25 C
1973
2.5 C
+1.40 C
1974
0.8 C
-0.34 C
1975
1.2 C
+0.05 C
1976
1.6 C
+0.45 C
1977
2.5 C
+1.40 C
1978
0.9 C
-0.17 C
1979
0.0 C
-1.16 C
1980
1.7 C
+0.57 C
1981
3.8 C
+2.70 C
1983
1.6 C
+0.51 C
The fitted trend in annual mean temperature here over 1905 to 1983 is 0.1 C (-0.1 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.4) per decade. The slope is a straight line fitted to 59 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Birtle
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.4) per decade
1905 to 1983
59
Not clearly different from zero
Mean daily maximum
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.2 to 0.4) per decade
1905 to 1983
59
Not clearly different from zero
Mean daily minimum
0.09 C (-0.04 to 0.22) per decade
0.2 F (-0.1 to 0.4) per decade
1905 to 1983
59
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
1883 to 1983
Yearly extremes at Birtle: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.6 C (105.1 F)
1931
33.9 C (93.0 F)
76
Coldest night (TNn)
-45.6 C (-50.1 F)
1916
-40.0 C (-40.0 F)
76
Wettest day (Rx1day)
129.5 mm (5.1 in)
1922
39.2 mm (1.5 in)
82
Wettest five days (Rx5day)
193.8 mm (7.6 in)
1885
54.9 mm (2.2 in)
82
Longest dry spell (CDD)
63 days
1980
27 days
82
Hottest day (TXx)
The hottest day of the year at Birtle, 1883 to 1983. The record is 40.6 C (105.1 F) in 1931, marked on the chart; the median year is 33.9 C (93.0 F).
Hottest day (TXx) at Birtle by year
Year
Hottest day (TXx)
1883
n/a
1884
n/a
1885
n/a
1887
n/a
1889
n/a
1890
n/a
1904
31.1 C (88.0 F)
1905
32.2 C (90.0 F)
1906
34.4 C (93.9 F)
1907
36.7 C (98.1 F)
1908
32.2 C (90.0 F)
1909
33.9 C (93.0 F)
1911
27.2 C (81.0 F)
1915
32.2 C (90.0 F)
1916
35.6 C (96.1 F)
1917
35.0 C (95.0 F)
1918
36.7 C (98.1 F)
1919
36.7 C (98.1 F)
1920
33.9 C (93.0 F)
1921
35.0 C (95.0 F)
1922
33.3 C (91.9 F)
1923
34.4 C (93.9 F)
1924
29.4 C (84.9 F)
1925
30.6 C (87.1 F)
1926
35.6 C (96.1 F)
1927
30.6 C (87.1 F)
1928
33.3 C (91.9 F)
1929
35.0 C (95.0 F)
1930
33.9 C (93.0 F)
1931
40.6 C (105.1 F)
1932
35.6 C (96.1 F)
1933
21.1 C (70.0 F)
1934
37.8 C (100.0 F)
1935
31.7 C (89.1 F)
1936
40.0 C (104.0 F)
1937
37.8 C (100.0 F)
1938
35.6 C (96.1 F)
1939
36.7 C (98.1 F)
1940
35.0 C (95.0 F)
1941
35.0 C (95.0 F)
1942
32.2 C (90.0 F)
1943
30.6 C (87.1 F)
1944
31.7 C (89.1 F)
1945
36.1 C (97.0 F)
1946
33.9 C (93.0 F)
1947
34.4 C (93.9 F)
1948
33.9 C (93.0 F)
1949
35.0 C (95.0 F)
1950
30.6 C (87.1 F)
1951
33.9 C (93.0 F)
1952
35.6 C (96.1 F)
1953
31.1 C (88.0 F)
1954
29.4 C (84.9 F)
1955
33.3 C (91.9 F)
1956
32.2 C (90.0 F)
1957
33.3 C (91.9 F)
1958
35.0 C (95.0 F)
1959
35.6 C (96.1 F)
1960
32.8 C (91.0 F)
1961
37.2 C (99.0 F)
1962
32.2 C (90.0 F)
1963
33.9 C (93.0 F)
1964
31.7 C (89.1 F)
1965
33.9 C (93.0 F)
1966
32.8 C (91.0 F)
1967
33.3 C (91.9 F)
1968
33.3 C (91.9 F)
1969
34.4 C (93.9 F)
1970
33.9 C (93.0 F)
1971
32.8 C (91.0 F)
1972
33.9 C (93.0 F)
1973
32.8 C (91.0 F)
1974
32.2 C (90.0 F)
1975
35.6 C (96.1 F)
1976
35.0 C (95.0 F)
1977
33.9 C (93.0 F)
1978
35.0 C (95.0 F)
1979
37.8 C (100.0 F)
1980
36.5 C (97.7 F)
1981
37.0 C (98.6 F)
1982
34.0 C (93.2 F)
1983
37.5 C (99.5 F)
Coldest night (TNn)
The coldest night of the year at Birtle, 1883 to 1983. The record is -45.6 C (-50.1 F) in 1916, marked on the chart; the median year is -40.0 C (-40.0 F).
Coldest night (TNn) at Birtle by year
Year
Coldest night (TNn)
1883
n/a
1884
n/a
1885
n/a
1887
n/a
1889
n/a
1890
n/a
1904
-38.9 C (-38.0 F)
1905
-41.7 C (-43.1 F)
1906
-38.9 C (-38.0 F)
1907
-41.7 C (-43.1 F)
1908
-10.6 C (12.9 F)
1909
-12.8 C (9.0 F)
1911
-8.3 C (17.1 F)
1915
-28.3 C (-18.9 F)
1916
-45.6 C (-50.1 F)
1917
-45.0 C (-49.0 F)
1918
-40.6 C (-41.1 F)
1919
-41.7 C (-43.1 F)
1920
-40.0 C (-40.0 F)
1921
-40.0 C (-40.0 F)
1922
-45.0 C (-49.0 F)
1923
-31.7 C (-25.1 F)
1924
-38.9 C (-38.0 F)
1925
-35.6 C (-32.1 F)
1926
-36.1 C (-33.0 F)
1927
-41.7 C (-43.1 F)
1928
-36.7 C (-34.1 F)
1929
-38.9 C (-38.0 F)
1930
-41.7 C (-43.1 F)
1931
-31.1 C (-24.0 F)
1932
-37.2 C (-35.0 F)
1933
-40.6 C (-41.1 F)
1934
-39.4 C (-38.9 F)
1935
-40.0 C (-40.0 F)
1936
-42.8 C (-45.0 F)
1937
-39.4 C (-38.9 F)
1938
-39.4 C (-38.9 F)
1939
-42.8 C (-45.0 F)
1940
-38.9 C (-38.0 F)
1941
-42.2 C (-44.0 F)
1942
-36.7 C (-34.1 F)
1943
-45.6 C (-50.1 F)
1944
-37.8 C (-36.0 F)
1945
-37.8 C (-36.0 F)
1946
-41.1 C (-42.0 F)
1947
-39.4 C (-38.9 F)
1948
-37.8 C (-36.0 F)
1949
-44.4 C (-47.9 F)
1950
-45.6 C (-50.1 F)
1951
-40.6 C (-41.1 F)
1952
-37.8 C (-36.0 F)
1953
-40.0 C (-40.0 F)
1954
-41.1 C (-42.0 F)
1955
-38.3 C (-36.9 F)
1956
-42.2 C (-44.0 F)
1957
-40.0 C (-40.0 F)
1958
-38.9 C (-38.0 F)
1959
-40.6 C (-41.1 F)
1960
-37.2 C (-35.0 F)
1961
-41.7 C (-43.1 F)
1962
-45.6 C (-50.1 F)
1963
-36.7 C (-34.1 F)
1964
-35.6 C (-32.1 F)
1965
-37.2 C (-35.0 F)
1966
-45.0 C (-49.0 F)
1967
-41.7 C (-43.1 F)
1968
-42.2 C (-44.0 F)
1969
-39.4 C (-38.9 F)
1970
-38.9 C (-38.0 F)
1971
-40.6 C (-41.1 F)
1972
-41.1 C (-42.0 F)
1973
-37.8 C (-36.0 F)
1974
-40.6 C (-41.1 F)
1975
-35.6 C (-32.1 F)
1976
-36.7 C (-34.1 F)
1977
-41.7 C (-43.1 F)
1978
-40.0 C (-40.0 F)
1979
-42.2 C (-44.0 F)
1980
-41.5 C (-42.7 F)
1981
-37.5 C (-35.5 F)
1982
-38.0 C (-36.4 F)
1983
-43.0 C (-45.4 F)
Wettest day (Rx1day)
The wettest day of the year at Birtle, 1883 to 1983. The record is 129.5 mm (5.1 in) in 1922, marked on the chart; the median year is 39.2 mm (1.5 in).
Wettest day (Rx1day) at Birtle by year
Year
Wettest day (Rx1day)
1883
92.2 mm (3.6 in)
1884
91.7 mm (3.6 in)
1885
97.8 mm (3.9 in)
1887
23.1 mm (0.9 in)
1889
19.6 mm (0.8 in)
1890
63.5 mm (2.5 in)
1904
23.6 mm (0.9 in)
1905
54.6 mm (2.1 in)
1906
39.4 mm (1.6 in)
1907
50.8 mm (2.0 in)
1908
34.8 mm (1.4 in)
1909
65.3 mm (2.6 in)
1911
20.8 mm (0.8 in)
1915
31.8 mm (1.3 in)
1916
28.7 mm (1.1 in)
1917
13.0 mm (0.5 in)
1918
49.0 mm (1.9 in)
1919
38.9 mm (1.5 in)
1920
95.3 mm (3.8 in)
1921
44.7 mm (1.8 in)
1922
129.5 mm (5.1 in)
1923
42.9 mm (1.7 in)
1924
52.3 mm (2.1 in)
1925
35.3 mm (1.4 in)
1926
45.7 mm (1.8 in)
1927
53.1 mm (2.1 in)
1928
26.9 mm (1.1 in)
1929
21.8 mm (0.9 in)
1930
46.7 mm (1.8 in)
1931
30.0 mm (1.2 in)
1932
57.4 mm (2.3 in)
1933
8.4 mm (0.33 in)
1934
17.5 mm (0.7 in)
1935
56.6 mm (2.2 in)
1936
16.8 mm (0.7 in)
1937
46.2 mm (1.8 in)
1938
27.7 mm (1.1 in)
1939
20.6 mm (0.8 in)
1940
21.1 mm (0.8 in)
1941
53.8 mm (2.1 in)
1942
43.2 mm (1.7 in)
1943
58.2 mm (2.3 in)
1944
64.8 mm (2.6 in)
1945
26.7 mm (1.1 in)
1946
68.1 mm (2.7 in)
1947
72.4 mm (2.9 in)
1948
34.0 mm (1.3 in)
1949
77.0 mm (3.0 in)
1950
48.8 mm (1.9 in)
1951
33.0 mm (1.3 in)
1952
66.3 mm (2.6 in)
1953
30.7 mm (1.2 in)
1954
42.7 mm (1.7 in)
1955
49.5 mm (1.9 in)
1956
50.8 mm (2.0 in)
1957
52.8 mm (2.1 in)
1958
21.6 mm (0.9 in)
1959
41.9 mm (1.6 in)
1960
47.0 mm (1.9 in)
1961
22.1 mm (0.9 in)
1962
39.6 mm (1.6 in)
1963
41.4 mm (1.6 in)
1964
27.2 mm (1.1 in)
1965
48.3 mm (1.9 in)
1966
20.8 mm (0.8 in)
1967
37.1 mm (1.5 in)
1968
32.5 mm (1.3 in)
1969
34.0 mm (1.3 in)
1970
48.3 mm (1.9 in)
1971
44.2 mm (1.7 in)
1972
29.5 mm (1.2 in)
1973
34.0 mm (1.3 in)
1974
19.8 mm (0.8 in)
1975
36.1 mm (1.4 in)
1976
61.0 mm (2.4 in)
1977
27.9 mm (1.1 in)
1978
25.7 mm (1.0 in)
1979
21.6 mm (0.9 in)
1980
36.6 mm (1.4 in)
1981
26.0 mm (1.0 in)
1982
26.4 mm (1.0 in)
1983
31.6 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Birtle, 1883 to 1983. The record is 193.8 mm (7.6 in) in 1885, marked on the chart; the median year is 54.9 mm (2.2 in).
Wettest five days (Rx5day) at Birtle by year
Year
Wettest five days (Rx5day)
1883
92.2 mm (3.6 in)
1884
99.3 mm (3.9 in)
1885
193.8 mm (7.6 in)
1887
23.1 mm (0.9 in)
1889
36.9 mm (1.5 in)
1890
104.6 mm (4.1 in)
1904
29.7 mm (1.2 in)
1905
54.6 mm (2.1 in)
1906
62.6 mm (2.5 in)
1907
51.1 mm (2.0 in)
1908
34.8 mm (1.4 in)
1909
71.9 mm (2.8 in)
1911
53.8 mm (2.1 in)
1915
49.0 mm (1.9 in)
1916
50.2 mm (2.0 in)
1917
21.6 mm (0.9 in)
1918
64.3 mm (2.5 in)
1919
46.0 mm (1.8 in)
1920
95.3 mm (3.8 in)
1921
56.1 mm (2.2 in)
1922
150.3 mm (5.9 in)
1923
63.3 mm (2.5 in)
1924
52.3 mm (2.1 in)
1925
51.5 mm (2.0 in)
1926
52.8 mm (2.1 in)
1927
63.9 mm (2.5 in)
1928
41.4 mm (1.6 in)
1929
32.7 mm (1.3 in)
1930
101.8 mm (4.0 in)
1931
34.6 mm (1.4 in)
1932
92.3 mm (3.6 in)
1933
8.4 mm (0.33 in)
1934
25.2 mm (1.0 in)
1935
100.5 mm (4.0 in)
1936
32.5 mm (1.3 in)
1937
49.2 mm (1.9 in)
1938
44.2 mm (1.7 in)
1939
32.4 mm (1.3 in)
1940
34.0 mm (1.3 in)
1941
80.7 mm (3.2 in)
1942
67.6 mm (2.7 in)
1943
68.1 mm (2.7 in)
1944
97.0 mm (3.8 in)
1945
38.1 mm (1.5 in)
1946
111.5 mm (4.4 in)
1947
174.8 mm (6.9 in)
1948
69.8 mm (2.7 in)
1949
80.5 mm (3.2 in)
1950
60.5 mm (2.4 in)
1951
43.9 mm (1.7 in)
1952
134.9 mm (5.3 in)
1953
64.2 mm (2.5 in)
1954
53.8 mm (2.1 in)
1955
70.1 mm (2.8 in)
1956
74.6 mm (2.9 in)
1957
57.4 mm (2.3 in)
1958
35.1 mm (1.4 in)
1959
50.1 mm (2.0 in)
1960
77.5 mm (3.1 in)
1961
36.6 mm (1.4 in)
1962
52.6 mm (2.1 in)
1963
55.2 mm (2.2 in)
1964
34.2 mm (1.3 in)
1965
76.7 mm (3.0 in)
1966
41.1 mm (1.6 in)
1967
83.0 mm (3.3 in)
1968
50.1 mm (2.0 in)
1969
65.8 mm (2.6 in)
1970
86.2 mm (3.4 in)
1971
69.6 mm (2.7 in)
1972
37.1 mm (1.5 in)
1973
63.2 mm (2.5 in)
1974
35.0 mm (1.4 in)
1975
57.2 mm (2.3 in)
1976
73.2 mm (2.9 in)
1977
51.1 mm (2.0 in)
1978
36.8 mm (1.4 in)
1979
32.5 mm (1.3 in)
1980
60.6 mm (2.4 in)
1981
60.2 mm (2.4 in)
1982
49.2 mm (1.9 in)
1983
34.6 mm (1.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Birtle, 1883 to 1983. The record is 63 days in 1980, marked on the chart; the median year is 27 days.
Longest dry spell (CDD) at Birtle by year
Year
Longest dry spell (CDD)
1883
27 days
1884
34 days
1885
34 days
1887
39 days
1889
29 days
1890
20 days
1904
36 days
1905
30 days
1906
25 days
1907
26 days
1908
23 days
1909
25 days
1911
9 days
1915
17 days
1916
12 days
1917
45 days
1918
23 days
1919
28 days
1920
21 days
1921
20 days
1922
35 days
1923
30 days
1924
35 days
1925
28 days
1926
18 days
1927
16 days
1928
33 days
1929
35 days
1930
32 days
1931
44 days
1932
22 days
1933
23 days
1934
31 days
1935
29 days
1936
31 days
1937
23 days
1938
36 days
1939
34 days
1940
37 days
1941
25 days
1942
18 days
1943
30 days
1944
22 days
1945
35 days
1946
25 days
1947
38 days
1948
34 days
1949
38 days
1950
26 days
1951
33 days
1952
32 days
1953
28 days
1954
27 days
1955
19 days
1956
15 days
1957
14 days
1958
23 days
1959
23 days
1960
21 days
1961
38 days
1962
15 days
1963
46 days
1964
29 days
1965
31 days
1966
33 days
1967
18 days
1968
21 days
1969
21 days
1970
17 days
1971
27 days
1972
28 days
1973
21 days
1974
58 days
1975
25 days
1976
21 days
1977
25 days
1978
23 days
1979
22 days
1980
63 days
1981
39 days
1982
18 days
1983
23 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
59 years with a frost
Across 59 years with a frost, the median last spring frost at Birtle falls on 30 May and the median first autumn frost on 9 September, which leaves a median of 97 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 Birtle
Measure
Median, all years
Earliest period
Recent period (1950 to 1983)
Recent against earliest
Fitted trend
Last spring frost
30 May
n/a
25 May
n/a
-2.2 days per decade
First autumn frost
9 September
n/a
10 September
n/a
+0.9 days per decade
Growing days
97 days
n/a
104 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
59 years, 1883 to 1983
A day with at least 37.9 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 95.8 mm (3.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Birtle: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
37.9 mm (1.5 in)
5 years
53.0 mm (2.1 in)
10 years
63.1 mm (2.5 in)
25 years
76.1 mm (3.0 in)
50 years
85.9 mm (3.4 in)
100 years
95.8 mm (3.8 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 1883 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: 92.2 mm (3.6 in) in 1883; 91.7 mm (3.6 in) in 1884; 77.0 mm (3.0 in) in 1949.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Birtle standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Birtle 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.