Record envelope, standing records and threshold days for Lustre 4 NNW (USC00245285), Montana, United States, with 73 years of record.
Key Facts for Lustre 4 NNW
Lustre 4 NNW (USC00245285) is a weather station in Montana, United States at 48.45 latitude and -105.93 longitude, 891 m (2,923 ft) above sea level.
The station reports from 1921 to 1993, 73 years of record.
1,464 records set at Lustre 4 NNW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Lustre 4 NNW set a daily record high minimum temperature of 10.0 C (50.0 F) on 6 October 1993.
About the Station
Location: Montana, United States, 48.45 latitude, -105.93 longitude.
Elevation: 891 m (2,923 ft).
Period of record: 1921 to 1993, 73 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 Lustre 4 NNW. 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 Lustre 4 NNW, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
11.7 C (53.1 F)
-38.9 C (-38.0 F)
n/a
n/a
Feb
19.4 C (66.9 F)
-38.3 C (-36.9 F)
n/a
n/a
Mar
23.3 C (73.9 F)
-33.9 C (-29.0 F)
n/a
n/a
Apr
31.1 C (88.0 F)
-24.4 C (-11.9 F)
n/a
n/a
May
37.2 C (99.0 F)
-11.1 C (12.0 F)
n/a
n/a
Jun
41.1 C (106.0 F)
-2.8 C (27.0 F)
n/a
n/a
Jul
39.4 C (102.9 F)
1.1 C (34.0 F)
n/a
n/a
Aug
40.0 C (104.0 F)
-2.8 C (27.0 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-8.3 C (17.1 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Nov
21.7 C (71.1 F)
-31.7 C (-25.1 F)
n/a
n/a
Dec
12.8 C (55.0 F)
-38.3 C (-36.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Lustre 4 NNW still stand. 1992 holds the most, with 67.
Standing records at Lustre 4 NNW by the year they were set
Year set
Standing records
1947
2
1948
22
1949
37
1950
52
1951
37
1952
24
1953
30
1954
43
1955
28
1956
28
1957
26
1958
33
1959
29
1960
23
1961
23
1962
39
1963
47
1964
25
1965
46
1966
37
1967
30
1968
28
1969
30
1970
11
1971
24
1972
42
1973
31
1974
25
1975
21
1976
17
1977
28
1978
16
1979
30
1980
34
1981
35
1982
28
1983
36
1984
27
1985
47
1986
27
1987
33
1988
48
1989
35
1990
29
1991
32
1992
67
1993
22
All-Time Record Progression
6 new records
6 all-time records were set at Lustre 4 NNW between 28 April 1970 and 5 June 1988. Each dot is a new record.
When Lustre 4 NNW set new all-time records
Date
Kind
Detail
1970-04-28
Record daily snowfall
Record daily snowfall 45.7 cm (18.0 in)
1979-02-12
Record snow depth
Record snow depth 61.0 cm (24.0 in)
1979-03-02
Record snow depth
Record snow depth 63.5 cm (25.0 in)
1983-08-06
Record high maximum temperature
Record high maximum temperature 40.0 C (104.0 F)
1983-12-23
Record low maximum temperature
Record low maximum temperature -32.8 C (-27.0 F)
1988-06-05
Record high maximum temperature
Record high maximum temperature 41.1 C (106.0 F)
Wettest Day of Each Month
Aug: 62.7 mm (2.5 in)
The wettest day on record for each calendar month at Lustre 4 NNW. The most was 62.7 mm (2.5 in) on 6 August 1948.
Record daily precipitation for each month at Lustre 4 NNW
Month
Record daily precipitation (mm)
Date
Jan
20.3 mm (0.8 in)
2 January 1929
Feb
17.8 mm (0.7 in)
10 February 1990
Mar
50.8 mm (2.0 in)
23 March 1929
Apr
50.8 mm (2.0 in)
27 April 1930
May
49.5 mm (1.9 in)
6 May 1965
Jun
56.1 mm (2.2 in)
22 June 1923
Jul
50.8 mm (2.0 in)
9 July 1946
Aug
62.7 mm (2.5 in)
6 August 1948
Sep
61.0 mm (2.4 in)
19 September 1925
Oct
32.5 mm (1.3 in)
4 October 1927
Nov
30.5 mm (1.2 in)
19 November 1941
Dec
19.1 mm (0.8 in)
9 December 1929
Period of Record Coverage
1947 to 1993
Complete yearUnder 90 percent of days
47 years of record at Lustre 4 NNW, 1947 to 1993. 2 years have data for under 90 percent of days and are left out of rankings: 1947, 1993.
Cooler than the station meanWarmer than the station mean
One stripe for each of 45 complete years at Lustre 4 NNW, 1948 to 1992. Blue stripes are years cooler than the station's own mean of 4.8 C (40.6 F); red stripes are warmer. The coolest year was 1950, at 1.6 C (34.9 F), and the warmest was 1987, at 7.5 C (45.5 F). The strongest colour marks a difference of 3.2 C (5.8 F).
Annual mean temperature at Lustre 4 NNW as warming stripes, 1948 to 1992
Year
Annual mean temperature
Difference from the station mean
1948
4.2 C
-0.51 C
1949
4.4 C
-0.32 C
1950
1.6 C
-3.15 C
1951
1.8 C
-2.91 C
1952
4.7 C
-0.06 C
1953
5.8 C
+1.05 C
1954
4.8 C
+0.07 C
1955
3.4 C
-1.40 C
1956
4.4 C
-0.34 C
1957
4.8 C
+0.06 C
1958
5.5 C
+0.73 C
1959
4.0 C
-0.78 C
1960
4.7 C
-0.10 C
1961
5.8 C
+1.02 C
1962
5.1 C
+0.32 C
1963
6.0 C
+1.26 C
1964
5.0 C
+0.29 C
1965
3.3 C
-1.48 C
1966
3.9 C
-0.81 C
1967
4.3 C
-0.43 C
1968
4.8 C
+0.09 C
1969
3.9 C
-0.87 C
1970
3.9 C
-0.89 C
1971
4.1 C
-0.66 C
1972
3.0 C
-1.76 C
1973
5.8 C
+1.05 C
1974
5.4 C
+0.66 C
1975
4.1 C
-0.63 C
1976
5.8 C
+1.07 C
1977
5.4 C
+0.68 C
1978
3.6 C
-1.13 C
1979
4.0 C
-0.73 C
1980
5.6 C
+0.87 C
1981
7.0 C
+2.28 C
1982
3.0 C
-1.74 C
1983
5.4 C
+0.63 C
1984
5.4 C
+0.63 C
1985
3.6 C
-1.17 C
1986
5.7 C
+0.94 C
1987
7.5 C
+2.75 C
1988
6.5 C
+1.73 C
1989
4.4 C
-0.32 C
1990
5.9 C
+1.18 C
1991
6.1 C
+1.31 C
1992
6.3 C
+1.56 C
The annual mean temperature here has risen by 0.4 C (0.2 to 0.7) per decade over 1948 to 1992. In Fahrenheit: 0.7 F (0.3 to 1.2) per decade. The slope is a straight line fitted to 45 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Lustre 4 NNW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.4 C (0.2 to 0.7) per decade
0.7 F (0.3 to 1.2) per decade
1948 to 1992
45
Rise
Mean daily maximum
0.4 C (0.1 to 0.7) per decade
0.7 F (0.2 to 1.3) per decade
1948 to 1992
45
Rise
Mean daily minimum
0.4 C (0.2 to 0.7) per decade
0.7 F (0.3 to 1.2) per decade
1948 to 1992
45
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
1921 to 1993
Yearly extremes at Lustre 4 NNW: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.1 C (106.0 F)
1988
36.7 C (98.1 F)
47
Coldest night (TNn)
-38.9 C (-38.0 F)
1950
-33.9 C (-29.0 F)
47
Wettest day (Rx1day)
62.7 mm (2.5 in)
1948
32.5 mm (1.3 in)
73
Wettest five days (Rx5day)
110.2 mm (4.3 in)
1923
48.6 mm (1.9 in)
73
Longest dry spell (CDD)
91 days
1934
38 days
73
Hottest day (TXx)
The hottest day of the year at Lustre 4 NNW, 1921 to 1993. The record is 41.1 C (106.0 F) in 1988, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Lustre 4 NNW by year
Year
Hottest day (TXx)
1921
n/a
1922
n/a
1923
n/a
1924
n/a
1925
n/a
1926
n/a
1927
n/a
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
8.9 C (48.0 F)
1948
38.9 C (102.0 F)
1949
39.4 C (102.9 F)
1950
35.6 C (96.1 F)
1951
38.3 C (100.9 F)
1952
36.1 C (97.0 F)
1953
32.8 C (91.0 F)
1954
36.1 C (97.0 F)
1955
36.1 C (97.0 F)
1956
36.1 C (97.0 F)
1957
36.1 C (97.0 F)
1958
38.3 C (100.9 F)
1959
37.2 C (99.0 F)
1960
38.9 C (102.0 F)
1961
37.8 C (100.0 F)
1962
33.3 C (91.9 F)
1963
39.4 C (102.9 F)
1964
36.1 C (97.0 F)
1965
37.2 C (99.0 F)
1966
37.8 C (100.0 F)
1967
36.1 C (97.0 F)
1968
36.1 C (97.0 F)
1969
37.2 C (99.0 F)
1970
35.6 C (96.1 F)
1971
38.9 C (102.0 F)
1972
36.1 C (97.0 F)
1973
38.3 C (100.9 F)
1974
36.7 C (98.1 F)
1975
38.9 C (102.0 F)
1976
36.1 C (97.0 F)
1977
34.4 C (93.9 F)
1978
36.1 C (97.0 F)
1979
37.2 C (99.0 F)
1980
36.1 C (97.0 F)
1981
36.7 C (98.1 F)
1982
33.9 C (93.0 F)
1983
40.0 C (104.0 F)
1984
36.7 C (98.1 F)
1985
37.8 C (100.0 F)
1986
33.9 C (93.0 F)
1987
34.4 C (93.9 F)
1988
41.1 C (106.0 F)
1989
37.8 C (100.0 F)
1990
37.8 C (100.0 F)
1991
36.7 C (98.1 F)
1992
36.1 C (97.0 F)
1993
33.9 C (93.0 F)
Coldest night (TNn)
The coldest night of the year at Lustre 4 NNW, 1921 to 1993. The record is -38.9 C (-38.0 F) in 1950, marked on the chart; the median year is -33.9 C (-29.0 F).
Coldest night (TNn) at Lustre 4 NNW by year
Year
Coldest night (TNn)
1921
n/a
1922
n/a
1923
n/a
1924
n/a
1925
n/a
1926
n/a
1927
n/a
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
-26.1 C (-15.0 F)
1948
-33.9 C (-29.0 F)
1949
-34.4 C (-29.9 F)
1950
-38.9 C (-38.0 F)
1951
-36.1 C (-33.0 F)
1952
-32.2 C (-26.0 F)
1953
-32.2 C (-26.0 F)
1954
-38.9 C (-38.0 F)
1955
-34.4 C (-29.9 F)
1956
-36.1 C (-33.0 F)
1957
-34.4 C (-29.9 F)
1958
-28.9 C (-20.0 F)
1959
-31.7 C (-25.1 F)
1960
-29.4 C (-20.9 F)
1961
-32.8 C (-27.0 F)
1962
-38.3 C (-36.9 F)
1963
-33.9 C (-29.0 F)
1964
-36.7 C (-34.1 F)
1965
-33.3 C (-27.9 F)
1966
-35.6 C (-32.1 F)
1967
-35.6 C (-32.1 F)
1968
-38.3 C (-36.9 F)
1969
-36.7 C (-34.1 F)
1970
-37.2 C (-35.0 F)
1971
-33.3 C (-27.9 F)
1972
-38.9 C (-38.0 F)
1973
-32.8 C (-27.0 F)
1974
-34.4 C (-29.9 F)
1975
-31.7 C (-25.1 F)
1976
-32.8 C (-27.0 F)
1977
-37.8 C (-36.0 F)
1978
-32.2 C (-26.0 F)
1979
-35.0 C (-31.0 F)
1980
-33.9 C (-29.0 F)
1981
-30.6 C (-23.1 F)
1982
-36.1 C (-33.0 F)
1983
-38.3 C (-36.9 F)
1984
-32.8 C (-27.0 F)
1985
-35.6 C (-32.1 F)
1986
-31.7 C (-25.1 F)
1987
-25.6 C (-14.1 F)
1988
-32.8 C (-27.0 F)
1989
-38.3 C (-36.9 F)
1990
-35.6 C (-32.1 F)
1991
-31.1 C (-24.0 F)
1992
-32.8 C (-27.0 F)
1993
-31.7 C (-25.1 F)
Wettest day (Rx1day)
The wettest day of the year at Lustre 4 NNW, 1921 to 1993. The record is 62.7 mm (2.5 in) in 1948, marked on the chart; the median year is 32.5 mm (1.3 in).
Wettest day (Rx1day) at Lustre 4 NNW by year
Year
Wettest day (Rx1day)
1921
14.5 mm (0.6 in)
1922
18.3 mm (0.7 in)
1923
56.1 mm (2.2 in)
1924
34.5 mm (1.4 in)
1925
61.0 mm (2.4 in)
1926
34.3 mm (1.4 in)
1927
32.5 mm (1.3 in)
1928
39.4 mm (1.6 in)
1929
50.8 mm (2.0 in)
1930
50.8 mm (2.0 in)
1931
35.1 mm (1.4 in)
1932
16.3 mm (0.6 in)
1933
39.4 mm (1.6 in)
1934
21.6 mm (0.9 in)
1935
32.8 mm (1.3 in)
1936
26.7 mm (1.1 in)
1937
23.1 mm (0.9 in)
1938
47.0 mm (1.9 in)
1939
20.6 mm (0.8 in)
1940
47.0 mm (1.9 in)
1941
30.5 mm (1.2 in)
1942
31.0 mm (1.2 in)
1943
35.6 mm (1.4 in)
1944
32.5 mm (1.3 in)
1945
25.4 mm (1.0 in)
1946
50.8 mm (2.0 in)
1947
29.2 mm (1.1 in)
1948
62.7 mm (2.5 in)
1949
19.1 mm (0.8 in)
1950
31.8 mm (1.3 in)
1951
18.0 mm (0.7 in)
1952
31.2 mm (1.2 in)
1953
30.5 mm (1.2 in)
1954
27.7 mm (1.1 in)
1955
48.8 mm (1.9 in)
1956
33.0 mm (1.3 in)
1957
27.2 mm (1.1 in)
1958
21.6 mm (0.9 in)
1959
45.5 mm (1.8 in)
1960
24.1 mm (0.9 in)
1961
23.6 mm (0.9 in)
1962
26.9 mm (1.1 in)
1963
23.4 mm (0.9 in)
1964
36.8 mm (1.4 in)
1965
49.5 mm (1.9 in)
1966
27.4 mm (1.1 in)
1967
20.1 mm (0.8 in)
1968
42.4 mm (1.7 in)
1969
42.9 mm (1.7 in)
1970
48.3 mm (1.9 in)
1971
25.1 mm (1.0 in)
1972
46.2 mm (1.8 in)
1973
31.2 mm (1.2 in)
1974
43.7 mm (1.7 in)
1975
27.9 mm (1.1 in)
1976
45.2 mm (1.8 in)
1977
42.4 mm (1.7 in)
1978
35.8 mm (1.4 in)
1979
19.8 mm (0.8 in)
1980
14.7 mm (0.6 in)
1981
38.4 mm (1.5 in)
1982
48.3 mm (1.9 in)
1983
36.3 mm (1.4 in)
1984
17.3 mm (0.7 in)
1985
45.5 mm (1.8 in)
1986
35.1 mm (1.4 in)
1987
50.8 mm (2.0 in)
1988
26.2 mm (1.0 in)
1989
19.6 mm (0.8 in)
1990
17.8 mm (0.7 in)
1991
28.4 mm (1.1 in)
1992
51.1 mm (2.0 in)
1993
49.5 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Lustre 4 NNW, 1921 to 1993. The record is 110.2 mm (4.3 in) in 1923, marked on the chart; the median year is 48.6 mm (1.9 in).
Wettest five days (Rx5day) at Lustre 4 NNW by year
Year
Wettest five days (Rx5day)
1921
26.9 mm (1.1 in)
1922
29.0 mm (1.1 in)
1923
110.2 mm (4.3 in)
1924
11.9 mm (0.5 in)
1925
24.9 mm (1.0 in)
1926
54.3 mm (2.1 in)
1927
39.9 mm (1.6 in)
1928
47.7 mm (1.9 in)
1929
31.0 mm (1.2 in)
1930
66.0 mm (2.6 in)
1931
35.1 mm (1.4 in)
1932
39.0 mm (1.5 in)
1933
77.8 mm (3.1 in)
1934
39.1 mm (1.5 in)
1935
35.7 mm (1.4 in)
1936
36.1 mm (1.4 in)
1937
34.3 mm (1.4 in)
1938
100.6 mm (4.0 in)
1939
49.2 mm (1.9 in)
1940
61.5 mm (2.4 in)
1941
48.5 mm (1.9 in)
1942
52.6 mm (2.1 in)
1943
50.5 mm (2.0 in)
1944
48.2 mm (1.9 in)
1945
25.4 mm (1.0 in)
1946
51.8 mm (2.0 in)
1947
57.1 mm (2.2 in)
1948
91.3 mm (3.6 in)
1949
27.2 mm (1.1 in)
1950
56.2 mm (2.2 in)
1951
40.2 mm (1.6 in)
1952
57.1 mm (2.2 in)
1953
48.6 mm (1.9 in)
1954
42.4 mm (1.7 in)
1955
51.6 mm (2.0 in)
1956
68.6 mm (2.7 in)
1957
41.5 mm (1.6 in)
1958
25.2 mm (1.0 in)
1959
64.1 mm (2.5 in)
1960
38.1 mm (1.5 in)
1961
26.4 mm (1.0 in)
1962
42.4 mm (1.7 in)
1963
63.3 mm (2.5 in)
1964
73.2 mm (2.9 in)
1965
62.5 mm (2.5 in)
1966
59.7 mm (2.4 in)
1967
43.2 mm (1.7 in)
1968
67.1 mm (2.6 in)
1969
73.1 mm (2.9 in)
1970
63.0 mm (2.5 in)
1971
32.5 mm (1.3 in)
1972
78.3 mm (3.1 in)
1973
44.6 mm (1.8 in)
1974
69.6 mm (2.7 in)
1975
49.6 mm (2.0 in)
1976
50.1 mm (2.0 in)
1977
44.4 mm (1.7 in)
1978
72.2 mm (2.8 in)
1979
30.8 mm (1.2 in)
1980
22.4 mm (0.9 in)
1981
47.5 mm (1.9 in)
1982
58.2 mm (2.3 in)
1983
44.7 mm (1.8 in)
1984
20.3 mm (0.8 in)
1985
56.9 mm (2.2 in)
1986
50.6 mm (2.0 in)
1987
58.2 mm (2.3 in)
1988
40.9 mm (1.6 in)
1989
27.3 mm (1.1 in)
1990
31.0 mm (1.2 in)
1991
50.6 mm (2.0 in)
1992
85.5 mm (3.4 in)
1993
84.0 mm (3.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Lustre 4 NNW, 1921 to 1993. The record is 91 days in 1934, marked on the chart; the median year is 38 days.
Longest dry spell (CDD) at Lustre 4 NNW by year
Year
Longest dry spell (CDD)
1921
42 days
1922
44 days
1923
18 days
1924
20 days
1925
25 days
1926
32 days
1927
22 days
1928
47 days
1929
29 days
1930
56 days
1931
62 days
1932
47 days
1933
31 days
1934
91 days
1935
58 days
1936
40 days
1937
72 days
1938
41 days
1939
55 days
1940
56 days
1941
55 days
1942
52 days
1943
55 days
1944
34 days
1945
29 days
1946
30 days
1947
32 days
1948
37 days
1949
41 days
1950
23 days
1951
34 days
1952
24 days
1953
35 days
1954
32 days
1955
46 days
1956
51 days
1957
29 days
1958
40 days
1959
37 days
1960
86 days
1961
33 days
1962
38 days
1963
27 days
1964
35 days
1965
64 days
1966
33 days
1967
28 days
1968
46 days
1969
70 days
1970
30 days
1971
39 days
1972
28 days
1973
81 days
1974
36 days
1975
29 days
1976
38 days
1977
60 days
1978
38 days
1979
36 days
1980
43 days
1981
50 days
1982
44 days
1983
50 days
1984
31 days
1985
46 days
1986
31 days
1987
77 days
1988
28 days
1989
24 days
1990
33 days
1991
46 days
1992
28 days
1993
32 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
45 years with a frost
Across 45 years with a frost, the median last spring frost at Lustre 4 NNW falls on 16 May and the median first autumn frost on 19 September, which leaves a median of 126 days between them.
Fitted over all years, the growing season changes by +1.4 days per decade at this station.
Frost dates and growing season at Lustre 4 NNW
Measure
Median, all years
Earliest period
Recent period (1963 to 1992)
Recent against earliest
Fitted trend
Last spring frost
16 May
n/a
15 May
n/a
-1.4 days per decade
First autumn frost
19 September
n/a
19 September
n/a
+0.1 days per decade
Growing days
126 days
n/a
129 days
n/a
+1.4 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
63 years, 1930 to 1992
A day with at least 32.4 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 64.2 mm (2.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Lustre 4 NNW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
32.4 mm (1.3 in)
5 years
42.8 mm (1.7 in)
10 years
48.9 mm (1.9 in)
25 years
55.7 mm (2.2 in)
50 years
60.1 mm (2.4 in)
100 years
64.2 mm (2.5 in)
Longer than the 63 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, 63 years of values from 1930 to 1992.
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: 62.7 mm (2.5 in) in 1948; 51.1 mm (2.0 in) in 1992; 50.8 mm (2.0 in) in 1930.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Lustre 4 NNW, at 1953. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1953 ran 0.3 C (0.5 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Lustre 4 NNW, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1953
-0.3
-0.5
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 Lustre 4 NNW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Lustre 4 NNW 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.