Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Treherne. 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 Treherne, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
8.3 C (46.9 F)
-42.2 C (-44.0 F)
n/a
n/a
Feb
10.0 C (50.0 F)
-43.9 C (-47.0 F)
n/a
n/a
Mar
23.3 C (73.9 F)
-35.0 C (-31.0 F)
n/a
n/a
Apr
30.0 C (86.0 F)
-20.6 C (-5.1 F)
n/a
n/a
May
37.2 C (99.0 F)
-12.2 C (10.0 F)
n/a
n/a
Jun
40.0 C (104.0 F)
-5.0 C (23.0 F)
n/a
n/a
Jul
39.4 C (102.9 F)
0.6 C (33.1 F)
n/a
n/a
Aug
37.2 C (99.0 F)
-1.1 C (30.0 F)
n/a
n/a
Sep
36.7 C (98.1 F)
-9.4 C (15.1 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-18.9 C (-2.0 F)
n/a
n/a
Nov
22.8 C (73.0 F)
-36.1 C (-33.0 F)
n/a
n/a
Dec
11.1 C (52.0 F)
-40.6 C (-41.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Treherne still stand. 1907 holds the most, with 67.
Standing records at Treherne by the year they were set
Year set
Standing records
1895
12
1896
55
1897
40
1898
28
1899
46
1900
39
1901
46
1902
31
1903
56
1904
51
1905
61
1906
37
1907
67
1908
44
1909
36
1910
52
1911
33
1912
22
1913
28
1914
43
1915
28
1916
37
1917
44
1918
35
1919
45
1920
24
1921
18
1922
21
1923
35
1924
34
1925
31
1926
23
1927
26
1928
30
1929
24
1930
31
1931
30
1932
34
1933
32
1934
38
1935
12
1938
5
All-Time Record Progression
2 new records
2 all-time records were set at Treherne between 17 June 1933 and 5 March 1935. Each dot is a new record.
When Treherne set new all-time records
Date
Kind
Detail
1933-06-17
Record high minimum temperature
Record high minimum temperature 23.3 C (73.9 F)
1935-03-05
Record daily snowfall
Record daily snowfall 38.1 cm (15.0 in)
Wettest Day of Each Month
Jul: 91.4 mm (3.6 in)
The wettest day on record for each calendar month at Treherne. The most was 91.4 mm (3.6 in) on 10 July 1892.
Record daily precipitation for each month at Treherne
Month
Record daily precipitation (mm)
Date
Jan
17.8 mm (0.7 in)
29 January 1916
Feb
25.4 mm (1.0 in)
25 February 1930
Mar
38.1 mm (1.5 in)
5 March 1935
Apr
46.0 mm (1.8 in)
29 April 1896
May
79.0 mm (3.1 in)
23 May 1885
Jun
72.4 mm (2.9 in)
29 June 1935
Jul
91.4 mm (3.6 in)
10 July 1892
Aug
53.8 mm (2.1 in)
9 August 1900
Sep
59.2 mm (2.3 in)
24 September 1900
Oct
48.0 mm (1.9 in)
3 October 1911
Nov
29.2 mm (1.1 in)
18 November 1922
Dec
35.6 mm (1.4 in)
26 December 1916
Period of Record Coverage
1895 to 1938
Complete yearUnder 90 percent of days
42 years of record at Treherne, 1895 to 1938. 4 years have data for under 90 percent of days and are left out of rankings: 1895, 1931, 1935, 1938.
Cooler than the station meanWarmer than the station mean
One stripe for each of 34 complete years at Treherne, 1896 to 1933. Blue stripes are years cooler than the station's own mean of 2.0 C (35.6 F); red stripes are warmer. The coolest year was 1907, at -0.8 C (30.5 F), and the warmest was 1921, at 3.7 C (38.6 F). The strongest colour marks a difference of 2.9 C (5.2 F).
Annual mean temperature at Treherne as warming stripes, 1896 to 1933
Year
Annual mean temperature
Difference from the station mean
1896
0.8 C
-1.22 C
1897
1.4 C
-0.58 C
1898
1.5 C
-0.46 C
1899
0.8 C
-1.15 C
1900
2.8 C
+0.83 C
1901
2.6 C
+0.63 C
1902
2.4 C
+0.46 C
1903
1.6 C
-0.35 C
1904
0.3 C
-1.64 C
1905
0.6 C
-1.36 C
1906
1.0 C
-0.96 C
1907
-0.8 C
-2.81 C
1908
1.7 C
-0.32 C
1909
0.6 C
-1.39 C
1910
3.0 C
+0.98 C
1911
1.7 C
-0.25 C
1912
2.1 C
+0.07 C
1913
2.5 C
+0.56 C
1914
3.0 C
+1.02 C
1915
3.2 C
+1.19 C
1916
0.8 C
-1.23 C
1917
0.8 C
-1.16 C
1918
2.4 C
+0.46 C
1919
2.3 C
+0.31 C
1920
2.9 C
+0.87 C
1921
3.7 C
+1.71 C
1922
3.6 C
+1.60 C
1923
2.9 C
+0.87 C
1924
1.5 C
-0.52 C
1925
2.5 C
+0.49 C
1926
2.6 C
+0.64 C
1930
3.4 C
+1.41 C
1932
2.6 C
+0.62 C
1933
2.5 C
+0.55 C
The annual mean temperature here has risen by 0.5 C (0.2 to 0.8) per decade over 1896 to 1933. In Fahrenheit: 0.9 F (0.3 to 1.5) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Treherne
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.5 C (0.2 to 0.8) per decade
0.9 F (0.3 to 1.5) per decade
1896 to 1933
34
Rise
Mean daily maximum
0.36 C (0.00 to 0.73) per decade
0.65 F (0.00 to 1.31) per decade
1896 to 1933
34
Not clearly different from zero
Mean daily minimum
0.6 C (0.3 to 1.0) per decade
1.2 F (0.6 to 1.7) per decade
1896 to 1933
34
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
1885 to 1978
Yearly extremes at Treherne: 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)
1900
35.6 C (96.1 F)
42
Coldest night (TNn)
-43.9 C (-47.0 F)
1899
-38.3 C (-36.9 F)
42
Wettest day (Rx1day)
91.4 mm (3.6 in)
1892
42.2 mm (1.7 in)
53
Wettest five days (Rx5day)
131.4 mm (5.2 in)
1935
61.7 mm (2.4 in)
53
Longest dry spell (CDD)
44 days
1935
26 days
53
Hottest day (TXx)
The hottest day of the year at Treherne, 1885 to 1978. The record is 40.0 C (104.0 F) in 1900, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Treherne by year
Year
Hottest day (TXx)
1885
n/a
1886
n/a
1887
n/a
1890
n/a
1891
n/a
1892
n/a
1893
n/a
1894
n/a
1895
29.4 C (84.9 F)
1896
31.1 C (88.0 F)
1897
36.7 C (98.1 F)
1898
33.3 C (91.9 F)
1899
33.9 C (93.0 F)
1900
40.0 C (104.0 F)
1901
35.6 C (96.1 F)
1902
32.2 C (90.0 F)
1903
36.7 C (98.1 F)
1904
29.4 C (84.9 F)
1905
32.2 C (90.0 F)
1906
35.0 C (95.0 F)
1907
32.2 C (90.0 F)
1908
33.9 C (93.0 F)
1909
32.8 C (91.0 F)
1910
38.3 C (100.9 F)
1911
32.8 C (91.0 F)
1912
36.1 C (97.0 F)
1913
36.1 C (97.0 F)
1914
37.2 C (99.0 F)
1915
35.6 C (96.1 F)
1916
35.6 C (96.1 F)
1917
37.2 C (99.0 F)
1918
37.8 C (100.0 F)
1919
37.2 C (99.0 F)
1920
35.6 C (96.1 F)
1921
35.6 C (96.1 F)
1922
34.4 C (93.9 F)
1923
35.0 C (95.0 F)
1924
33.3 C (91.9 F)
1925
34.4 C (93.9 F)
1926
36.7 C (98.1 F)
1927
32.2 C (90.0 F)
1928
36.1 C (97.0 F)
1929
39.4 C (102.9 F)
1930
35.6 C (96.1 F)
1931
37.2 C (99.0 F)
1932
36.7 C (98.1 F)
1933
37.8 C (100.0 F)
1934
38.3 C (100.9 F)
1935
27.2 C (81.0 F)
1938
17.8 C (64.0 F)
1974
n/a
1975
n/a
1976
n/a
1977
n/a
1978
n/a
Coldest night (TNn)
The coldest night of the year at Treherne, 1885 to 1978. The record is -43.9 C (-47.0 F) in 1899, marked on the chart; the median year is -38.3 C (-36.9 F).
Coldest night (TNn) at Treherne by year
Year
Coldest night (TNn)
1885
n/a
1886
n/a
1887
n/a
1890
n/a
1891
n/a
1892
n/a
1893
n/a
1894
n/a
1895
-28.3 C (-18.9 F)
1896
-40.0 C (-40.0 F)
1897
-40.6 C (-41.1 F)
1898
-34.4 C (-29.9 F)
1899
-43.9 C (-47.0 F)
1900
-37.2 C (-35.0 F)
1901
-37.8 C (-36.0 F)
1902
-38.3 C (-36.9 F)
1903
-39.4 C (-38.9 F)
1904
-42.2 C (-44.0 F)
1905
-41.1 C (-42.0 F)
1906
-38.3 C (-36.9 F)
1907
-41.1 C (-42.0 F)
1908
-36.1 C (-33.0 F)
1909
-41.7 C (-43.1 F)
1910
-40.6 C (-41.1 F)
1911
-38.9 C (-38.0 F)
1912
-41.1 C (-42.0 F)
1913
-36.1 C (-33.0 F)
1914
-41.1 C (-42.0 F)
1915
-38.9 C (-38.0 F)
1916
-42.2 C (-44.0 F)
1917
-41.1 C (-42.0 F)
1918
-39.4 C (-38.9 F)
1919
-35.6 C (-32.1 F)
1920
-36.1 C (-33.0 F)
1921
-32.8 C (-27.0 F)
1922
-36.1 C (-33.0 F)
1923
-37.2 C (-35.0 F)
1924
-36.1 C (-33.0 F)
1925
-35.6 C (-32.1 F)
1926
-33.9 C (-29.0 F)
1927
-35.6 C (-32.1 F)
1928
-33.3 C (-27.9 F)
1929
-38.9 C (-38.0 F)
1930
-39.4 C (-38.9 F)
1931
-28.9 C (-20.0 F)
1932
-34.4 C (-29.9 F)
1933
-38.3 C (-36.9 F)
1934
-35.0 C (-31.0 F)
1935
-38.3 C (-36.9 F)
1938
-17.8 C (0.0 F)
1974
n/a
1975
n/a
1976
n/a
1977
n/a
1978
n/a
Wettest day (Rx1day)
The wettest day of the year at Treherne, 1885 to 1978. The record is 91.4 mm (3.6 in) in 1892, marked on the chart; the median year is 42.2 mm (1.7 in).
Wettest day (Rx1day) at Treherne by year
Year
Wettest day (Rx1day)
1885
79.0 mm (3.1 in)
1886
26.9 mm (1.1 in)
1887
45.7 mm (1.8 in)
1890
48.3 mm (1.9 in)
1891
52.8 mm (2.1 in)
1892
91.4 mm (3.6 in)
1893
63.5 mm (2.5 in)
1894
41.9 mm (1.6 in)
1895
61.2 mm (2.4 in)
1896
46.0 mm (1.8 in)
1897
24.1 mm (0.9 in)
1898
33.8 mm (1.3 in)
1899
40.6 mm (1.6 in)
1900
63.5 mm (2.5 in)
1901
36.6 mm (1.4 in)
1902
50.8 mm (2.0 in)
1903
39.6 mm (1.6 in)
1904
27.9 mm (1.1 in)
1905
4.1 mm (0.16 in)
1906
57.2 mm (2.3 in)
1907
n/a
1908
2.5 mm (0.10 in)
1909
20.3 mm (0.8 in)
1910
56.1 mm (2.2 in)
1911
62.2 mm (2.4 in)
1912
39.9 mm (1.6 in)
1913
46.5 mm (1.8 in)
1914
42.2 mm (1.7 in)
1915
21.3 mm (0.8 in)
1916
35.6 mm (1.4 in)
1917
25.4 mm (1.0 in)
1918
38.9 mm (1.5 in)
1919
48.3 mm (1.9 in)
1920
37.1 mm (1.5 in)
1921
87.6 mm (3.4 in)
1922
51.3 mm (2.0 in)
1923
23.9 mm (0.9 in)
1924
58.9 mm (2.3 in)
1925
29.5 mm (1.2 in)
1926
58.9 mm (2.3 in)
1927
33.5 mm (1.3 in)
1928
54.6 mm (2.1 in)
1929
24.6 mm (1.0 in)
1930
46.2 mm (1.8 in)
1931
50.0 mm (2.0 in)
1932
26.7 mm (1.1 in)
1933
73.4 mm (2.9 in)
1934
20.6 mm (0.8 in)
1935
72.4 mm (2.9 in)
1938
n/a
1974
32.5 mm (1.3 in)
1975
41.9 mm (1.6 in)
1976
27.4 mm (1.1 in)
1977
50.8 mm (2.0 in)
1978
88.9 mm (3.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Treherne, 1885 to 1978. The record is 131.4 mm (5.2 in) in 1935, marked on the chart; the median year is 61.7 mm (2.4 in).
Wettest five days (Rx5day) at Treherne by year
Year
Wettest five days (Rx5day)
1885
86.9 mm (3.4 in)
1886
29.5 mm (1.2 in)
1887
88.4 mm (3.5 in)
1890
74.5 mm (2.9 in)
1891
84.8 mm (3.3 in)
1892
126.2 mm (5.0 in)
1893
83.0 mm (3.3 in)
1894
81.3 mm (3.2 in)
1895
71.4 mm (2.8 in)
1896
105.7 mm (4.2 in)
1897
36.9 mm (1.5 in)
1898
72.9 mm (2.9 in)
1899
61.7 mm (2.4 in)
1900
90.4 mm (3.6 in)
1901
53.4 mm (2.1 in)
1902
58.4 mm (2.3 in)
1903
48.0 mm (1.9 in)
1904
27.9 mm (1.1 in)
1905
7.4 mm (0.29 in)
1906
89.0 mm (3.5 in)
1907
n/a
1908
0.0 mm (0.00 in)
1909
38.1 mm (1.5 in)
1910
70.6 mm (2.8 in)
1911
106.2 mm (4.2 in)
1912
51.5 mm (2.0 in)
1913
62.7 mm (2.5 in)
1914
46.0 mm (1.8 in)
1915
44.2 mm (1.7 in)
1916
50.1 mm (2.0 in)
1917
30.3 mm (1.2 in)
1918
60.5 mm (2.4 in)
1919
53.2 mm (2.1 in)
1920
66.5 mm (2.6 in)
1921
99.0 mm (3.9 in)
1922
55.6 mm (2.2 in)
1923
47.0 mm (1.9 in)
1924
84.6 mm (3.3 in)
1925
44.5 mm (1.8 in)
1926
104.4 mm (4.1 in)
1927
53.3 mm (2.1 in)
1928
54.6 mm (2.1 in)
1929
44.2 mm (1.7 in)
1930
66.0 mm (2.6 in)
1931
77.7 mm (3.1 in)
1932
39.4 mm (1.6 in)
1933
103.6 mm (4.1 in)
1934
50.8 mm (2.0 in)
1935
131.4 mm (5.2 in)
1938
n/a
1974
68.3 mm (2.7 in)
1975
53.6 mm (2.1 in)
1976
41.9 mm (1.6 in)
1977
90.4 mm (3.6 in)
1978
95.2 mm (3.7 in)
Longest dry spell (CDD)
The longest dry spell of the year at Treherne, 1885 to 1978. The record is 44 days in 1935, marked on the chart; the median year is 26 days.
Longest dry spell (CDD) at Treherne by year
Year
Longest dry spell (CDD)
1885
25 days
1886
31 days
1887
37 days
1890
35 days
1891
27 days
1892
33 days
1893
28 days
1894
29 days
1895
22 days
1896
24 days
1897
34 days
1898
27 days
1899
30 days
1900
34 days
1901
31 days
1902
27 days
1903
33 days
1904
24 days
1905
17 days
1906
19 days
1907
n/a
1908
24 days
1909
32 days
1910
18 days
1911
26 days
1912
27 days
1913
21 days
1914
30 days
1915
35 days
1916
26 days
1917
27 days
1918
15 days
1919
17 days
1920
26 days
1921
16 days
1922
32 days
1923
22 days
1924
18 days
1925
20 days
1926
17 days
1927
29 days
1928
20 days
1929
24 days
1930
25 days
1931
32 days
1932
22 days
1933
23 days
1934
17 days
1935
44 days
1938
n/a
1974
19 days
1975
27 days
1976
36 days
1977
38 days
1978
25 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
34 years with a frost
Across 34 years with a frost, the median last spring frost at Treherne falls on 3 June and the median first autumn frost on 11 September, which leaves a median of 103 days between them.
Fitted over all years, the growing season changes by +6.3 days per decade at this station.
Frost dates and growing season at Treherne
Measure
Median, all years
Earliest period
Recent period (1900 to 1933)
Recent against earliest
Fitted trend
Last spring frost
3 June
n/a
3 June
n/a
-2.0 days per decade
First autumn frost
11 September
n/a
12 September
n/a
+4.4 days per decade
Growing days
103 days
n/a
103 days
n/a
+6.3 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
39 years, 1886 to 1977
A day with at least 43.0 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 96.4 mm (3.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Treherne: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
43.0 mm (1.7 in)
5 years
58.5 mm (2.3 in)
10 years
68.3 mm (2.7 in)
25 years
80.1 mm (3.2 in)
50 years
88.4 mm (3.5 in)
Longer than the 39 years of record
100 years
96.4 mm (3.8 in)
Longer than the 39 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, 39 years of values from 1886 to 1977.
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: 91.4 mm (3.6 in) in 1892; 87.6 mm (3.4 in) in 1921; 73.4 mm (2.9 in) in 1933.
Download the Data
Data for Treherne standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Treherne 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.