Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Montebello Seigniory. 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 Montebello Seigniory, 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)
-42.2 C (-44.0 F)
n/a
n/a
Feb
11.1 C (52.0 F)
-40.0 C (-40.0 F)
n/a
n/a
Mar
26.1 C (79.0 F)
-37.8 C (-36.0 F)
n/a
n/a
Apr
29.4 C (84.9 F)
-20.6 C (-5.1 F)
n/a
n/a
May
33.3 C (91.9 F)
-7.8 C (18.0 F)
n/a
n/a
Jun
36.1 C (97.0 F)
-1.1 C (30.0 F)
n/a
n/a
Jul
37.2 C (99.0 F)
2.2 C (36.0 F)
n/a
n/a
Aug
37.2 C (99.0 F)
0.6 C (33.1 F)
n/a
n/a
Sep
35.6 C (96.1 F)
-4.4 C (24.1 F)
n/a
n/a
Oct
27.8 C (82.0 F)
-13.9 C (7.0 F)
n/a
n/a
Nov
22.8 C (73.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Dec
12.2 C (54.0 F)
-41.1 C (-42.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Montebello Seigniory still stand. 1936 holds the most, with 58.
Standing records at Montebello Seigniory by the year they were set
Year set
Standing records
1930
7
1931
26
1932
29
1933
46
1934
47
1935
32
1936
58
1937
29
1938
33
1939
29
1940
46
1941
31
1942
41
1943
43
1944
36
1945
42
1946
52
1947
48
1948
39
1949
41
1950
42
1951
42
1952
21
1953
44
1954
37
1955
30
1956
32
1957
32
1958
20
1959
29
1960
15
1961
29
1962
27
1963
27
1964
26
1965
31
1966
23
1967
17
1968
32
1969
19
1970
28
1971
26
1972
18
1973
27
1974
28
1975
7
All-Time Record Progression
3 new records
3 all-time records were set at Montebello Seigniory between 19 July 1968 and 16 December 1974. Each dot is a new record.
When Montebello Seigniory set new all-time records
Date
Kind
Detail
1968-07-19
Record high minimum temperature
Record high minimum temperature 21.7 C (71.1 F)
1972-07-21
Record high minimum temperature
Record high minimum temperature 22.2 C (72.0 F)
1974-12-16
Record daily snowfall
Record daily snowfall 38.4 cm (15.1 in)
Wettest Day of Each Month
Aug: 130.3 mm (5.1 in)
The wettest day on record for each calendar month at Montebello Seigniory. The most was 130.3 mm (5.1 in) on 21 August 1952.
Record daily precipitation for each month at Montebello Seigniory
Month
Record daily precipitation (mm)
Date
Jan
35.1 mm (1.4 in)
22 January 1957
Feb
40.9 mm (1.6 in)
10 February 1970
Mar
42.9 mm (1.7 in)
17 March 1973
Apr
79.8 mm (3.1 in)
12 April 1934
May
54.6 mm (2.1 in)
25 May 1943
Jun
81.0 mm (3.2 in)
15 June 1943
Jul
71.6 mm (2.8 in)
1 July 1956
Aug
130.3 mm (5.1 in)
21 August 1952
Sep
64.5 mm (2.5 in)
25 September 1942
Oct
59.4 mm (2.3 in)
18 October 1937
Nov
55.4 mm (2.2 in)
4 November 1935
Dec
47.8 mm (1.9 in)
4 December 1961
Period of Record Coverage
1930 to 1975
Complete yearUnder 90 percent of days
46 years of record at Montebello Seigniory, 1930 to 1975. 6 years have data for under 90 percent of days and are left out of rankings: 1930, 1931, 1932, 1933, 1934, 1975.
Cooler than the station meanWarmer than the station mean
One stripe for each of 43 complete years at Montebello Seigniory, 1932 to 1974. Blue stripes are years cooler than the station's own mean of 4.9 C (40.9 F); red stripes are warmer. The coolest year was 1943, at 3.7 C (38.7 F), and the warmest was 1953, at 6.7 C (44.1 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Montebello Seigniory as warming stripes, 1932 to 1974
Year
Annual mean temperature
Difference from the station mean
1932
5.2 C
+0.28 C
1933
4.8 C
-0.12 C
1934
4.1 C
-0.84 C
1935
4.3 C
-0.64 C
1936
4.5 C
-0.46 C
1937
5.9 C
+0.99 C
1938
5.4 C
+0.48 C
1939
4.3 C
-0.63 C
1940
4.0 C
-0.91 C
1941
5.3 C
+0.35 C
1942
5.3 C
+0.38 C
1943
3.7 C
-1.22 C
1944
4.9 C
-0.08 C
1945
5.1 C
+0.18 C
1946
5.1 C
+0.16 C
1947
4.7 C
-0.27 C
1948
5.3 C
+0.32 C
1949
6.1 C
+1.10 C
1950
4.6 C
-0.37 C
1951
5.0 C
+0.06 C
1952
6.0 C
+1.05 C
1953
6.7 C
+1.75 C
1954
4.9 C
-0.08 C
1955
5.3 C
+0.36 C
1956
4.3 C
-0.65 C
1957
5.1 C
+0.17 C
1958
4.2 C
-0.75 C
1959
4.5 C
-0.46 C
1960
5.2 C
+0.27 C
1961
4.9 C
-0.01 C
1962
4.1 C
-0.90 C
1963
4.0 C
-0.91 C
1964
5.4 C
+0.43 C
1965
4.5 C
-0.47 C
1966
5.3 C
+0.39 C
1967
4.7 C
-0.30 C
1968
5.0 C
+0.04 C
1969
5.6 C
+0.65 C
1970
4.9 C
-0.02 C
1971
5.0 C
+0.03 C
1972
4.3 C
-0.66 C
1973
6.4 C
+1.44 C
1974
4.7 C
-0.21 C
The fitted trend in annual mean temperature here over 1932 to 1974 is 0.04 C (-0.12 to 0.21) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.2 to 0.4) per decade. The slope is a straight line fitted to 43 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Montebello Seigniory
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.04 C (-0.12 to 0.21) per decade
0.1 F (-0.2 to 0.4) per decade
1932 to 1974
43
Not clearly different from zero
Mean daily maximum
-0.16 C (-0.33 to 0.01) per decade
-0.29 F (-0.60 to 0.02) per decade
1932 to 1974
43
Not clearly different from zero
Mean daily minimum
0.2 C (0.1 to 0.4) per decade
0.4 F (0.1 to 0.8) per decade
1932 to 1974
43
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
1930 to 1975
Yearly extremes at Montebello Seigniory: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.2 C (99.0 F)
1944
33.3 C (91.9 F)
46
Coldest night (TNn)
-42.2 C (-44.0 F)
1957
-36.1 C (-33.0 F)
46
Wettest day (Rx1day)
130.3 mm (5.1 in)
1952
48.4 mm (1.9 in)
46
Wettest five days (Rx5day)
143.3 mm (5.6 in)
1952
69.2 mm (2.7 in)
46
Longest dry spell (CDD)
26 days
1941
14 days
46
Hottest day (TXx)
The hottest day of the year at Montebello Seigniory, 1930 to 1975. The record is 37.2 C (99.0 F) in 1944, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Montebello Seigniory by year
Year
Hottest day (TXx)
1930
31.7 C (89.1 F)
1931
36.1 C (97.0 F)
1932
31.7 C (89.1 F)
1933
35.0 C (95.0 F)
1934
34.4 C (93.9 F)
1935
34.4 C (93.9 F)
1936
34.4 C (93.9 F)
1937
35.0 C (95.0 F)
1938
35.0 C (95.0 F)
1939
33.3 C (91.9 F)
1940
32.2 C (90.0 F)
1941
36.1 C (97.0 F)
1942
33.3 C (91.9 F)
1943
32.8 C (91.0 F)
1944
37.2 C (99.0 F)
1945
32.8 C (91.0 F)
1946
33.3 C (91.9 F)
1947
35.0 C (95.0 F)
1948
35.6 C (96.1 F)
1949
36.1 C (97.0 F)
1950
32.2 C (90.0 F)
1951
30.6 C (87.1 F)
1952
32.8 C (91.0 F)
1953
35.6 C (96.1 F)
1954
30.0 C (86.0 F)
1955
37.2 C (99.0 F)
1956
32.8 C (91.0 F)
1957
32.8 C (91.0 F)
1958
31.1 C (88.0 F)
1959
34.4 C (93.9 F)
1960
31.7 C (89.1 F)
1961
33.3 C (91.9 F)
1962
35.6 C (96.1 F)
1963
33.9 C (93.0 F)
1964
35.6 C (96.1 F)
1965
31.7 C (89.1 F)
1966
34.4 C (93.9 F)
1967
31.7 C (89.1 F)
1968
33.3 C (91.9 F)
1969
32.2 C (90.0 F)
1970
32.2 C (90.0 F)
1971
32.8 C (91.0 F)
1972
31.1 C (88.0 F)
1973
32.8 C (91.0 F)
1974
30.6 C (87.1 F)
1975
16.7 C (62.1 F)
Coldest night (TNn)
The coldest night of the year at Montebello Seigniory, 1930 to 1975. The record is -42.2 C (-44.0 F) in 1957, marked on the chart; the median year is -36.1 C (-33.0 F).
Coldest night (TNn) at Montebello Seigniory by year
Year
Coldest night (TNn)
1930
-28.3 C (-18.9 F)
1931
-30.0 C (-22.0 F)
1932
-33.3 C (-27.9 F)
1933
-41.1 C (-42.0 F)
1934
-39.4 C (-38.9 F)
1935
-37.8 C (-36.0 F)
1936
-31.7 C (-25.1 F)
1937
-30.6 C (-23.1 F)
1938
-37.8 C (-36.0 F)
1939
-37.2 C (-35.0 F)
1940
-33.3 C (-27.9 F)
1941
-32.8 C (-27.0 F)
1942
-37.8 C (-36.0 F)
1943
-40.0 C (-40.0 F)
1944
-37.8 C (-36.0 F)
1945
-36.1 C (-33.0 F)
1946
-36.1 C (-33.0 F)
1947
-35.6 C (-32.1 F)
1948
-38.3 C (-36.9 F)
1949
-29.4 C (-20.9 F)
1950
-37.2 C (-35.0 F)
1951
-38.3 C (-36.9 F)
1952
-37.2 C (-35.0 F)
1953
-30.0 C (-22.0 F)
1954
-36.1 C (-33.0 F)
1955
-37.2 C (-35.0 F)
1956
-32.2 C (-26.0 F)
1957
-42.2 C (-44.0 F)
1958
-37.2 C (-35.0 F)
1959
-37.2 C (-35.0 F)
1960
-33.9 C (-29.0 F)
1961
-35.6 C (-32.1 F)
1962
-39.4 C (-38.9 F)
1963
-36.1 C (-33.0 F)
1964
-32.8 C (-27.0 F)
1965
-35.6 C (-32.1 F)
1966
-33.9 C (-29.0 F)
1967
-38.3 C (-36.9 F)
1968
-36.1 C (-33.0 F)
1969
-27.8 C (-18.0 F)
1970
-37.2 C (-35.0 F)
1971
-38.3 C (-36.9 F)
1972
-36.7 C (-34.1 F)
1973
-33.9 C (-29.0 F)
1974
-32.2 C (-26.0 F)
1975
-31.7 C (-25.1 F)
Wettest day (Rx1day)
The wettest day of the year at Montebello Seigniory, 1930 to 1975. The record is 130.3 mm (5.1 in) in 1952, marked on the chart; the median year is 48.4 mm (1.9 in).
Wettest day (Rx1day) at Montebello Seigniory by year
Year
Wettest day (Rx1day)
1930
48.5 mm (1.9 in)
1931
34.5 mm (1.4 in)
1932
48.3 mm (1.9 in)
1933
50.8 mm (2.0 in)
1934
79.8 mm (3.1 in)
1935
55.4 mm (2.2 in)
1936
38.9 mm (1.5 in)
1937
59.4 mm (2.3 in)
1938
32.3 mm (1.3 in)
1939
61.0 mm (2.4 in)
1940
55.1 mm (2.2 in)
1941
39.9 mm (1.6 in)
1942
64.5 mm (2.5 in)
1943
81.0 mm (3.2 in)
1944
31.8 mm (1.3 in)
1945
49.5 mm (1.9 in)
1946
41.4 mm (1.6 in)
1947
34.8 mm (1.4 in)
1948
53.8 mm (2.1 in)
1949
69.6 mm (2.7 in)
1950
43.7 mm (1.7 in)
1951
41.1 mm (1.6 in)
1952
130.3 mm (5.1 in)
1953
31.8 mm (1.3 in)
1954
43.7 mm (1.7 in)
1955
31.0 mm (1.2 in)
1956
71.6 mm (2.8 in)
1957
57.7 mm (2.3 in)
1958
47.8 mm (1.9 in)
1959
50.5 mm (2.0 in)
1960
42.9 mm (1.7 in)
1961
47.8 mm (1.9 in)
1962
58.7 mm (2.3 in)
1963
53.1 mm (2.1 in)
1964
24.1 mm (0.9 in)
1965
38.9 mm (1.5 in)
1966
32.0 mm (1.3 in)
1967
48.5 mm (1.9 in)
1968
31.5 mm (1.2 in)
1969
53.3 mm (2.1 in)
1970
57.2 mm (2.3 in)
1971
38.4 mm (1.5 in)
1972
65.3 mm (2.6 in)
1973
48.8 mm (1.9 in)
1974
45.0 mm (1.8 in)
1975
36.6 mm (1.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Montebello Seigniory, 1930 to 1975. The record is 143.3 mm (5.6 in) in 1952, marked on the chart; the median year is 69.2 mm (2.7 in).
Wettest five days (Rx5day) at Montebello Seigniory by year
Year
Wettest five days (Rx5day)
1930
53.2 mm (2.1 in)
1931
60.2 mm (2.4 in)
1932
78.0 mm (3.1 in)
1933
63.0 mm (2.5 in)
1934
95.3 mm (3.8 in)
1935
66.8 mm (2.6 in)
1936
85.3 mm (3.4 in)
1937
93.4 mm (3.7 in)
1938
52.1 mm (2.1 in)
1939
85.9 mm (3.4 in)
1940
66.3 mm (2.6 in)
1941
79.5 mm (3.1 in)
1942
74.4 mm (2.9 in)
1943
120.4 mm (4.7 in)
1944
53.6 mm (2.1 in)
1945
74.4 mm (2.9 in)
1946
77.1 mm (3.0 in)
1947
65.0 mm (2.6 in)
1948
85.8 mm (3.4 in)
1949
84.6 mm (3.3 in)
1950
66.0 mm (2.6 in)
1951
69.3 mm (2.7 in)
1952
143.3 mm (5.6 in)
1953
48.3 mm (1.9 in)
1954
65.1 mm (2.6 in)
1955
51.8 mm (2.0 in)
1956
93.7 mm (3.7 in)
1957
74.4 mm (2.9 in)
1958
62.0 mm (2.4 in)
1959
75.4 mm (3.0 in)
1960
63.5 mm (2.5 in)
1961
69.9 mm (2.8 in)
1962
71.6 mm (2.8 in)
1963
65.8 mm (2.6 in)
1964
49.2 mm (1.9 in)
1965
51.0 mm (2.0 in)
1966
60.5 mm (2.4 in)
1967
76.0 mm (3.0 in)
1968
64.2 mm (2.5 in)
1969
83.2 mm (3.3 in)
1970
69.1 mm (2.7 in)
1971
51.3 mm (2.0 in)
1972
99.4 mm (3.9 in)
1973
94.0 mm (3.7 in)
1974
61.0 mm (2.4 in)
1975
51.4 mm (2.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Montebello Seigniory, 1930 to 1975. The record is 26 days in 1941, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at Montebello Seigniory by year
Year
Longest dry spell (CDD)
1930
8 days
1931
10 days
1932
19 days
1933
14 days
1934
18 days
1935
15 days
1936
14 days
1937
13 days
1938
11 days
1939
23 days
1940
10 days
1941
26 days
1942
14 days
1943
11 days
1944
16 days
1945
12 days
1946
10 days
1947
17 days
1948
16 days
1949
15 days
1950
12 days
1951
14 days
1952
13 days
1953
18 days
1954
11 days
1955
17 days
1956
15 days
1957
17 days
1958
20 days
1959
12 days
1960
18 days
1961
26 days
1962
16 days
1963
13 days
1964
15 days
1965
19 days
1966
11 days
1967
16 days
1968
10 days
1969
12 days
1970
14 days
1971
12 days
1972
11 days
1973
11 days
1974
9 days
1975
14 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
43 years with a frost
Across 43 years with a frost, the median last spring frost at Montebello Seigniory falls on 19 May and the median first autumn frost on 23 September, which leaves a median of 127 days between them.
Fitted over all years, the growing season changes by +3.2 days per decade at this station.
Frost dates and growing season at Montebello Seigniory
Measure
Median, all years
Earliest period
Recent period (1945 to 1974)
Recent against earliest
Fitted trend
Last spring frost
19 May
n/a
21 May
n/a
-0.9 days per decade
First autumn frost
23 September
n/a
24 September
n/a
+2.3 days per decade
Growing days
127 days
n/a
127 days
n/a
+3.2 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, 1932 to 1974
A day with at least 47.1 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 111.6 mm (4.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Montebello Seigniory: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
47.1 mm (1.9 in)
5 years
62.2 mm (2.4 in)
10 years
73.0 mm (2.9 in)
25 years
87.6 mm (3.4 in)
50 years
99.3 mm (3.9 in)
Longer than the 42 years of record
100 years
111.6 mm (4.4 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 1932 to 1974.
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: 130.3 mm (5.1 in) in 1952; 81.0 mm (3.2 in) in 1943; 79.8 mm (3.1 in) in 1934.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Montebello Seigniory, at 1940 and 1968. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1940 ran 0.3 C (0.5 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1968 ran 0.2 C (0.4 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Montebello Seigniory, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1940
-0.2
-0.4
likely
5
1968
+0.2
+0.4
possible
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 Montebello Seigniory standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Montebello Seigniory 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.