Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Lansdowne House. 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 Lansdowne House, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
3.3 C (37.9 F)
-47.8 C (-54.0 F)
n/a
n/a
Feb
9.9 C (49.8 F)
-45.6 C (-50.1 F)
n/a
n/a
Mar
15.6 C (60.1 F)
-42.8 C (-45.0 F)
n/a
n/a
Apr
25.6 C (78.1 F)
-32.8 C (-27.0 F)
n/a
n/a
May
32.8 C (91.0 F)
-17.2 C (1.0 F)
n/a
n/a
Jun
35.0 C (95.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jul
36.7 C (98.1 F)
0.6 C (33.1 F)
n/a
n/a
Aug
35.0 C (95.0 F)
1.1 C (34.0 F)
n/a
n/a
Sep
29.4 C (84.9 F)
-7.2 C (19.0 F)
n/a
n/a
Oct
24.4 C (75.9 F)
-15.6 C (3.9 F)
n/a
n/a
Nov
17.2 C (63.0 F)
-33.3 C (-27.9 F)
n/a
n/a
Dec
7.2 C (45.0 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 Lansdowne House still stand. 1942 holds the most, with 63.
Standing records at Lansdowne House by the year they were set
Year set
Standing records
1941
37
1942
63
1943
37
1944
37
1945
33
1946
26
1947
52
1948
37
1949
38
1950
37
1951
38
1952
39
1953
30
1954
22
1955
42
1956
37
1957
24
1958
38
1959
28
1960
22
1961
23
1962
40
1963
40
1964
45
1965
30
1966
27
1967
35
1968
32
1969
33
1970
25
1971
19
1972
40
1973
30
1974
31
1975
39
1976
36
1977
28
1978
19
1979
35
1980
26
1981
37
1982
34
1983
43
All-Time Record Progression
4 new records
4 all-time records were set at Lansdowne House between 1 April 1971 and 30 July 1975. Each dot is a new record.
When Lansdowne House set new all-time records
Date
Kind
Detail
1971-04-01
Record daily snowfall
Record daily snowfall 49.8 cm (19.6 in)
1973-08-19
Record daily precipitation
Record daily precipitation 99.3 mm (3.9 in)
1974-07-07
Record daily precipitation
Record daily precipitation 108.0 mm (4.3 in)
1975-07-30
Record high maximum temperature
Record high maximum temperature 36.7 C (98.1 F)
Wettest Day of Each Month
Jul: 108.0 mm (4.3 in)
The wettest day on record for each calendar month at Lansdowne House. The most was 108.0 mm (4.3 in) on 7 July 1974.
Record daily precipitation for each month at Lansdowne House
Month
Record daily precipitation (mm)
Date
Jan
25.1 mm (1.0 in)
23 January 1969
Feb
24.6 mm (1.0 in)
27 February 1971
Mar
27.2 mm (1.1 in)
7 March 1973
Apr
49.3 mm (1.9 in)
1 April 1971
May
33.5 mm (1.3 in)
23 May 1955
Jun
78.2 mm (3.1 in)
27 June 1969
Jul
108.0 mm (4.3 in)
7 July 1974
Aug
99.3 mm (3.9 in)
19 August 1973
Sep
65.0 mm (2.6 in)
14 September 1969
Oct
46.2 mm (1.8 in)
6 October 1944
Nov
26.0 mm (1.0 in)
20 November 1983
Dec
26.4 mm (1.0 in)
5 December 1960
Period of Record Coverage
1941 to 1983
Complete yearUnder 90 percent of days
43 years of record at Lansdowne House, 1941 to 1983. 3 years have data for under 90 percent of days and are left out of rankings: 1941, 1945, 1946.
Cooler than the station meanWarmer than the station mean
One stripe for each of 39 complete years at Lansdowne House, 1942 to 1983. Blue stripes are years cooler than the station's own mean of -1.5 C (29.2 F); red stripes are warmer. The coolest year was 1950, at -3.6 C (25.5 F), and the warmest was 1981, at 0.4 C (32.8 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Lansdowne House as warming stripes, 1942 to 1983
Year
Annual mean temperature
Difference from the station mean
1942
-1.3 C
+0.21 C
1944
-0.7 C
+0.85 C
1947
-1.4 C
+0.10 C
1948
-0.1 C
+1.41 C
1949
-2.0 C
-0.50 C
1950
-3.6 C
-2.09 C
1951
-1.8 C
-0.22 C
1952
-0.4 C
+1.16 C
1953
-0.3 C
+1.22 C
1954
-1.3 C
+0.27 C
1955
-0.6 C
+0.92 C
1956
-2.6 C
-1.02 C
1957
-1.5 C
+0.07 C
1958
-1.7 C
-0.13 C
1959
-2.2 C
-0.63 C
1960
-1.4 C
+0.18 C
1961
-1.1 C
+0.42 C
1962
-1.9 C
-0.36 C
1963
-1.5 C
+0.06 C
1964
-1.9 C
-0.33 C
1965
-2.7 C
-1.20 C
1966
-2.2 C
-0.63 C
1967
-2.3 C
-0.81 C
1968
-0.9 C
+0.61 C
1969
-1.4 C
+0.12 C
1970
-1.7 C
-0.19 C
1971
-1.1 C
+0.45 C
1972
-3.5 C
-1.94 C
1973
-0.7 C
+0.88 C
1974
-2.7 C
-1.16 C
1975
-0.9 C
+0.62 C
1976
-2.0 C
-0.51 C
1977
-0.2 C
+1.35 C
1978
-2.4 C
-0.85 C
1979
-2.0 C
-0.44 C
1980
-1.8 C
-0.23 C
1981
0.4 C
+1.96 C
1982
-2.0 C
-0.47 C
1983
-0.6 C
+0.91 C
The fitted trend in annual mean temperature here over 1942 to 1983 is -0.03 C (-0.29 to 0.23) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.5 to 0.4) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Lansdowne House
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.03 C (-0.29 to 0.23) per decade
-0.1 F (-0.5 to 0.4) per decade
1942 to 1983
39
Not clearly different from zero
Mean daily maximum
0.01 C (-0.24 to 0.26) per decade
0.02 F (-0.43 to 0.48) per decade
1942 to 1983
39
Not clearly different from zero
Mean daily minimum
-0.1 C (-0.4 to 0.2) per decade
-0.1 F (-0.6 to 0.4) per decade
1942 to 1983
39
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
1941 to 1983
Yearly extremes at Lansdowne House: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.7 C (98.1 F)
1975
30.6 C (87.1 F)
43
Coldest night (TNn)
-47.8 C (-54.0 F)
1943
-41.7 C (-43.1 F)
43
Wettest day (Rx1day)
108.0 mm (4.3 in)
1974
35.3 mm (1.4 in)
43
Wettest five days (Rx5day)
123.4 mm (4.9 in)
1969
60.8 mm (2.4 in)
43
Longest dry spell (CDD)
30 days
1983
19 days
43
Hottest day (TXx)
The hottest day of the year at Lansdowne House, 1941 to 1983. The record is 36.7 C (98.1 F) in 1975, marked on the chart; the median year is 30.6 C (87.1 F).
Hottest day (TXx) at Lansdowne House by year
Year
Hottest day (TXx)
1941
33.9 C (93.0 F)
1942
31.1 C (88.0 F)
1943
32.2 C (90.0 F)
1944
30.0 C (86.0 F)
1945
34.4 C (93.9 F)
1946
30.6 C (87.1 F)
1947
33.9 C (93.0 F)
1948
30.6 C (87.1 F)
1949
35.0 C (95.0 F)
1950
30.6 C (87.1 F)
1951
32.8 C (91.0 F)
1952
31.1 C (88.0 F)
1953
31.1 C (88.0 F)
1954
29.4 C (84.9 F)
1955
35.0 C (95.0 F)
1956
35.0 C (95.0 F)
1957
30.0 C (86.0 F)
1958
29.4 C (84.9 F)
1959
30.0 C (86.0 F)
1960
29.4 C (84.9 F)
1961
30.0 C (86.0 F)
1962
30.6 C (87.1 F)
1963
32.8 C (91.0 F)
1964
32.2 C (90.0 F)
1965
30.0 C (86.0 F)
1966
28.9 C (84.0 F)
1967
29.4 C (84.9 F)
1968
27.8 C (82.0 F)
1969
32.8 C (91.0 F)
1970
31.7 C (89.1 F)
1971
29.4 C (84.9 F)
1972
32.2 C (90.0 F)
1973
29.4 C (84.9 F)
1974
32.8 C (91.0 F)
1975
36.7 C (98.1 F)
1976
33.3 C (91.9 F)
1977
30.0 C (86.0 F)
1978
30.0 C (86.0 F)
1979
30.6 C (87.1 F)
1980
30.6 C (87.1 F)
1981
34.0 C (93.2 F)
1982
30.4 C (86.7 F)
1983
33.3 C (91.9 F)
Coldest night (TNn)
The coldest night of the year at Lansdowne House, 1941 to 1983. The record is -47.8 C (-54.0 F) in 1943, marked on the chart; the median year is -41.7 C (-43.1 F).
Coldest night (TNn) at Lansdowne House by year
Year
Coldest night (TNn)
1941
-40.6 C (-41.1 F)
1942
-46.7 C (-52.1 F)
1943
-47.8 C (-54.0 F)
1944
-40.0 C (-40.0 F)
1945
-43.3 C (-45.9 F)
1946
-37.2 C (-35.0 F)
1947
-39.4 C (-38.9 F)
1948
-42.2 C (-44.0 F)
1949
-40.6 C (-41.1 F)
1950
-41.7 C (-43.1 F)
1951
-45.6 C (-50.1 F)
1952
-40.0 C (-40.0 F)
1953
-41.1 C (-42.0 F)
1954
-41.1 C (-42.0 F)
1955
-42.8 C (-45.0 F)
1956
-37.2 C (-35.0 F)
1957
-42.8 C (-45.0 F)
1958
-43.3 C (-45.9 F)
1959
-42.8 C (-45.0 F)
1960
-42.8 C (-45.0 F)
1961
-40.6 C (-41.1 F)
1962
-44.4 C (-47.9 F)
1963
-43.9 C (-47.0 F)
1964
-41.1 C (-42.0 F)
1965
-42.8 C (-45.0 F)
1966
-42.2 C (-44.0 F)
1967
-43.3 C (-45.9 F)
1968
-43.3 C (-45.9 F)
1969
-36.7 C (-34.1 F)
1970
-41.7 C (-43.1 F)
1971
-37.8 C (-36.0 F)
1972
-41.7 C (-43.1 F)
1973
-42.2 C (-44.0 F)
1974
-42.8 C (-45.0 F)
1975
-43.3 C (-45.9 F)
1976
-43.3 C (-45.9 F)
1977
-38.8 C (-37.8 F)
1978
-37.2 C (-35.0 F)
1979
-40.2 C (-40.4 F)
1980
-37.4 C (-35.3 F)
1981
-38.9 C (-38.0 F)
1982
-42.7 C (-44.9 F)
1983
-41.2 C (-42.2 F)
Wettest day (Rx1day)
The wettest day of the year at Lansdowne House, 1941 to 1983. The record is 108.0 mm (4.3 in) in 1974, marked on the chart; the median year is 35.3 mm (1.4 in).
Wettest day (Rx1day) at Lansdowne House by year
Year
Wettest day (Rx1day)
1941
32.5 mm (1.3 in)
1942
32.5 mm (1.3 in)
1943
48.3 mm (1.9 in)
1944
46.2 mm (1.8 in)
1945
21.3 mm (0.8 in)
1946
21.3 mm (0.8 in)
1947
47.2 mm (1.9 in)
1948
43.9 mm (1.7 in)
1949
34.3 mm (1.4 in)
1950
29.0 mm (1.1 in)
1951
31.8 mm (1.3 in)
1952
33.8 mm (1.3 in)
1953
20.6 mm (0.8 in)
1954
28.4 mm (1.1 in)
1955
33.5 mm (1.3 in)
1956
28.7 mm (1.1 in)
1957
33.5 mm (1.3 in)
1958
36.1 mm (1.4 in)
1959
39.6 mm (1.6 in)
1960
26.4 mm (1.0 in)
1961
23.1 mm (0.9 in)
1962
42.7 mm (1.7 in)
1963
46.5 mm (1.8 in)
1964
27.7 mm (1.1 in)
1965
30.7 mm (1.2 in)
1966
30.7 mm (1.2 in)
1967
69.6 mm (2.7 in)
1968
35.3 mm (1.4 in)
1969
78.2 mm (3.1 in)
1970
28.7 mm (1.1 in)
1971
49.3 mm (1.9 in)
1972
37.6 mm (1.5 in)
1973
99.3 mm (3.9 in)
1974
108.0 mm (4.3 in)
1975
46.7 mm (1.8 in)
1976
39.9 mm (1.6 in)
1977
55.2 mm (2.2 in)
1978
43.0 mm (1.7 in)
1979
38.9 mm (1.5 in)
1980
29.4 mm (1.2 in)
1981
18.9 mm (0.7 in)
1982
37.0 mm (1.5 in)
1983
36.8 mm (1.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Lansdowne House, 1941 to 1983. The record is 123.4 mm (4.9 in) in 1969, marked on the chart; the median year is 60.8 mm (2.4 in).
Wettest five days (Rx5day) at Lansdowne House by year
Year
Wettest five days (Rx5day)
1941
57.4 mm (2.3 in)
1942
69.1 mm (2.7 in)
1943
64.6 mm (2.5 in)
1944
48.5 mm (1.9 in)
1945
42.2 mm (1.7 in)
1946
37.6 mm (1.5 in)
1947
73.4 mm (2.9 in)
1948
84.8 mm (3.3 in)
1949
62.0 mm (2.4 in)
1950
46.8 mm (1.8 in)
1951
47.2 mm (1.9 in)
1952
75.4 mm (3.0 in)
1953
36.8 mm (1.4 in)
1954
43.4 mm (1.7 in)
1955
41.9 mm (1.6 in)
1956
35.1 mm (1.4 in)
1957
60.5 mm (2.4 in)
1958
60.8 mm (2.4 in)
1959
71.4 mm (2.8 in)
1960
50.8 mm (2.0 in)
1961
52.8 mm (2.1 in)
1962
70.6 mm (2.8 in)
1963
65.8 mm (2.6 in)
1964
52.3 mm (2.1 in)
1965
52.2 mm (2.1 in)
1966
52.6 mm (2.1 in)
1967
80.0 mm (3.1 in)
1968
66.8 mm (2.6 in)
1969
123.4 mm (4.9 in)
1970
54.2 mm (2.1 in)
1971
94.2 mm (3.7 in)
1972
50.5 mm (2.0 in)
1973
106.2 mm (4.2 in)
1974
123.0 mm (4.8 in)
1975
83.2 mm (3.3 in)
1976
71.4 mm (2.8 in)
1977
65.9 mm (2.6 in)
1978
87.4 mm (3.4 in)
1979
61.9 mm (2.4 in)
1980
38.8 mm (1.5 in)
1981
31.8 mm (1.3 in)
1982
60.8 mm (2.4 in)
1983
83.2 mm (3.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Lansdowne House, 1941 to 1983. The record is 30 days in 1983, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at Lansdowne House by year
Year
Longest dry spell (CDD)
1941
23 days
1942
22 days
1943
12 days
1944
25 days
1945
19 days
1946
12 days
1947
13 days
1948
27 days
1949
15 days
1950
18 days
1951
18 days
1952
12 days
1953
17 days
1954
21 days
1955
14 days
1956
23 days
1957
28 days
1958
17 days
1959
18 days
1960
23 days
1961
26 days
1962
20 days
1963
22 days
1964
16 days
1965
25 days
1966
15 days
1967
15 days
1968
18 days
1969
25 days
1970
26 days
1971
14 days
1972
20 days
1973
13 days
1974
11 days
1975
19 days
1976
15 days
1977
22 days
1978
24 days
1979
19 days
1980
27 days
1981
20 days
1982
15 days
1983
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
39 years with a frost
Across 39 years with a frost, the median last spring frost at Lansdowne House falls on 31 May and the median first autumn frost on 23 September, which leaves a median of 115 days between them.
Fitted over all years, the growing season changes by +2.1 days per decade at this station.
Frost dates and growing season at Lansdowne House
Measure
Median, all years
Earliest period
Recent period (1954 to 1983)
Recent against earliest
Fitted trend
Last spring frost
31 May
n/a
1 June
n/a
-2.1 days per decade
First autumn frost
23 September
n/a
23 September
n/a
0.0 days per decade
Growing days
115 days
n/a
115 days
n/a
+2.1 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
40 years, 1942 to 1983
A day with at least 35.9 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 119.6 mm (4.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Lansdowne House: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
35.9 mm (1.4 in)
5 years
49.5 mm (1.9 in)
10 years
61.2 mm (2.4 in)
25 years
80.2 mm (3.2 in)
50 years
98.0 mm (3.9 in)
Longer than the 40 years of record
100 years
119.6 mm (4.7 in)
Longer than the 40 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, 40 years of values from 1942 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: 108.0 mm (4.3 in) in 1974; 99.3 mm (3.9 in) in 1973; 78.2 mm (3.1 in) in 1969.
Download the Data
Data for Lansdowne House standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Lansdowne House 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.