Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Lost River. 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 Lost River, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
10.6 C (51.1 F)
-47.8 C (-54.0 F)
n/a
n/a
Feb
12.2 C (54.0 F)
-47.2 C (-53.0 F)
n/a
n/a
Mar
16.1 C (61.0 F)
-43.3 C (-45.9 F)
n/a
n/a
Apr
32.8 C (91.0 F)
-33.3 C (-27.9 F)
n/a
n/a
May
38.3 C (100.9 F)
-12.2 C (10.0 F)
n/a
n/a
Jun
37.2 C (99.0 F)
-3.9 C (25.0 F)
n/a
n/a
Jul
42.8 C (109.0 F)
0.0 C (32.0 F)
n/a
n/a
Aug
38.9 C (102.0 F)
-3.5 C (25.7 F)
n/a
n/a
Sep
40.0 C (104.0 F)
-10.6 C (12.9 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-23.9 C (-11.0 F)
n/a
n/a
Nov
17.8 C (64.0 F)
-37.8 C (-36.0 F)
n/a
n/a
Dec
10.0 C (50.0 F)
-45.0 C (-49.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Lost River still stand. 1917 holds the most, with 44.
Standing records at Lost River by the year they were set
Year set
Standing records
1911
23
1912
15
1913
14
1914
16
1915
18
1916
22
1917
44
1918
39
1919
35
1920
9
1921
23
1922
10
1923
30
1924
15
1925
18
1926
19
1927
16
1928
34
1929
14
1930
19
1931
17
1932
17
1933
16
1934
25
1935
26
1936
36
1937
22
1938
24
1939
20
1940
21
1941
23
1942
25
1943
19
1944
19
1945
18
1946
11
1947
22
1948
21
1949
34
1950
28
1951
19
1952
15
1953
15
1954
38
1955
17
1956
34
1957
11
1958
16
1959
16
1960
2
1961
25
1962
12
1963
23
1964
23
1965
15
1966
22
1967
23
1968
25
1969
13
1970
20
1971
7
1972
17
1973
12
1974
16
1975
4
1976
14
1977
33
1978
10
1979
7
1980
20
1981
27
1982
14
1983
22
All-Time Record Progression
4 new records
4 all-time records were set at Lost River between 19 July 1941 and 6 August 1961. Each dot is a new record.
When Lost River set new all-time records
Date
Kind
Detail
1941-07-19
Record high maximum temperature
Record high maximum temperature 42.8 C (109.0 F)
1943-01-20
Record low minimum temperature
Record low minimum temperature -47.8 C (-54.0 F)
1956-03-26
Record daily snowfall
Record daily snowfall 36.8 cm (14.5 in)
1961-08-06
Record high minimum temperature
Record high minimum temperature 22.8 C (73.0 F)
Wettest Day of Each Month
Sep: 55.4 mm (2.2 in)
The wettest day on record for each calendar month at Lost River. The most was 55.4 mm (2.2 in) on 15 September 1927.
Record daily precipitation for each month at Lost River
Month
Record daily precipitation (mm)
Date
Jan
24.1 mm (0.9 in)
5 January 1954
Feb
28.7 mm (1.1 in)
9 February 1977
Mar
36.8 mm (1.4 in)
26 March 1956
Apr
33.0 mm (1.3 in)
19 April 1973
May
49.0 mm (1.9 in)
26 May 1916
Jun
51.1 mm (2.0 in)
17 June 1929
Jul
49.5 mm (1.9 in)
9 July 1916
Aug
53.3 mm (2.1 in)
15 August 1927
Sep
55.4 mm (2.2 in)
15 September 1927
Oct
33.5 mm (1.3 in)
3 October 1969
Nov
27.9 mm (1.1 in)
26 November 1937
Dec
27.2 mm (1.1 in)
12 December 1955
Period of Record Coverage
1911 to 1983
Complete yearUnder 90 percent of days
73 years of record at Lost River, 1911 to 1983. 2 years have data for under 90 percent of days and are left out of rankings: 1911, 1921.
Cooler than the station meanWarmer than the station mean
One stripe for each of 67 complete years at Lost River, 1912 to 1983. Blue stripes are years cooler than the station's own mean of 0.2 C (32.3 F); red stripes are warmer. The coolest year was 1950, at -2.0 C (28.3 F), and the warmest was 1981, at 3.0 C (37.5 F). The strongest colour marks a difference of 2.9 C (5.2 F).
Annual mean temperature at Lost River as warming stripes, 1912 to 1983
Year
Annual mean temperature
Difference from the station mean
1912
-0.7 C
-0.86 C
1913
-1.1 C
-1.28 C
1914
0.0 C
-0.21 C
1915
1.0 C
+0.84 C
1916
-1.7 C
-1.88 C
1917
-1.9 C
-2.02 C
1918
-0.1 C
-0.31 C
1919
-0.2 C
-0.40 C
1922
0.2 C
+0.06 C
1923
0.2 C
+0.08 C
1924
-0.2 C
-0.36 C
1925
-0.2 C
-0.38 C
1926
0.6 C
+0.39 C
1927
-0.8 C
-0.94 C
1928
1.5 C
+1.36 C
1929
-0.4 C
-0.56 C
1930
1.1 C
+0.97 C
1931
2.8 C
+2.67 C
1932
-0.3 C
-0.48 C
1933
-1.1 C
-1.23 C
1934
1.0 C
+0.80 C
1935
-0.2 C
-0.35 C
1936
-0.6 C
-0.80 C
1937
0.3 C
+0.11 C
1939
1.0 C
+0.85 C
1940
1.8 C
+1.63 C
1941
1.8 C
+1.64 C
1942
1.0 C
+0.83 C
1943
1.3 C
+1.09 C
1944
1.8 C
+1.65 C
1945
-0.5 C
-0.62 C
1946
0.6 C
+0.46 C
1947
0.1 C
-0.07 C
1948
-0.1 C
-0.30 C
1949
0.2 C
+0.07 C
1950
-2.0 C
-2.20 C
1952
1.1 C
+0.96 C
1953
1.2 C
+1.01 C
1954
-0.3 C
-0.44 C
1955
-1.2 C
-1.34 C
1956
-0.9 C
-1.09 C
1958
0.6 C
+0.46 C
1959
0.0 C
-0.17 C
1960
0.1 C
-0.05 C
1961
0.4 C
+0.23 C
1962
0.4 C
+0.27 C
1963
1.1 C
+0.96 C
1964
0.3 C
+0.14 C
1965
-0.9 C
-1.05 C
1966
-1.3 C
-1.42 C
1967
-0.3 C
-0.44 C
1968
0.4 C
+0.27 C
1969
-0.4 C
-0.55 C
1970
-0.3 C
-0.50 C
1971
0.0 C
-0.20 C
1972
-1.3 C
-1.48 C
1973
0.6 C
+0.46 C
1974
-0.1 C
-0.24 C
1975
0.0 C
-0.14 C
1976
1.3 C
+1.09 C
1977
1.4 C
+1.19 C
1978
-0.2 C
-0.35 C
1979
-0.6 C
-0.76 C
1980
1.1 C
+0.91 C
1981
3.0 C
+2.87 C
1982
-1.1 C
-1.27 C
1983
0.8 C
+0.61 C
The fitted trend in annual mean temperature here over 1912 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 0.3) per decade. The slope is a straight line fitted to 67 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Lost River
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 0.3) per decade
1912 to 1983
67
Not clearly different from zero
Mean daily maximum
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.3) per decade
1912 to 1983
67
Not clearly different from zero
Mean daily minimum
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.3) per decade
1912 to 1983
67
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
1911 to 1983
Yearly extremes at Lost River: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.8 C (109.0 F)
1941
33.9 C (93.0 F)
73
Coldest night (TNn)
-47.8 C (-54.0 F)
1943
-42.2 C (-44.0 F)
73
Wettest day (Rx1day)
55.4 mm (2.2 in)
1927
30.5 mm (1.2 in)
73
Wettest five days (Rx5day)
138.6 mm (5.5 in)
1973
48.7 mm (1.9 in)
73
Longest dry spell (CDD)
49 days
1924
28 days
73
Hottest day (TXx)
The hottest day of the year at Lost River, 1911 to 1983. The record is 42.8 C (109.0 F) in 1941, marked on the chart; the median year is 33.9 C (93.0 F).
Hottest day (TXx) at Lost River by year
Year
Hottest day (TXx)
1911
30.6 C (87.1 F)
1912
32.8 C (91.0 F)
1913
28.3 C (82.9 F)
1914
33.9 C (93.0 F)
1915
32.8 C (91.0 F)
1916
29.4 C (84.9 F)
1917
32.2 C (90.0 F)
1918
32.2 C (90.0 F)
1919
33.9 C (93.0 F)
1920
33.9 C (93.0 F)
1921
29.4 C (84.9 F)
1922
33.3 C (91.9 F)
1923
32.2 C (90.0 F)
1924
32.2 C (90.0 F)
1925
33.3 C (91.9 F)
1926
34.4 C (93.9 F)
1927
31.7 C (89.1 F)
1928
34.4 C (93.9 F)
1929
34.4 C (93.9 F)
1930
35.6 C (96.1 F)
1931
33.9 C (93.0 F)
1932
31.7 C (89.1 F)
1933
34.4 C (93.9 F)
1934
34.4 C (93.9 F)
1935
36.1 C (97.0 F)
1936
38.3 C (100.9 F)
1937
37.8 C (100.0 F)
1938
35.6 C (96.1 F)
1939
37.8 C (100.0 F)
1940
40.0 C (104.0 F)
1941
42.8 C (109.0 F)
1942
31.1 C (88.0 F)
1943
35.0 C (95.0 F)
1944
33.9 C (93.0 F)
1945
32.8 C (91.0 F)
1946
36.7 C (98.1 F)
1947
39.4 C (102.9 F)
1948
33.9 C (93.0 F)
1949
36.7 C (98.1 F)
1950
36.7 C (98.1 F)
1951
35.0 C (95.0 F)
1952
30.6 C (87.1 F)
1953
33.9 C (93.0 F)
1954
30.0 C (86.0 F)
1955
33.9 C (93.0 F)
1956
35.0 C (95.0 F)
1957
32.8 C (91.0 F)
1958
34.4 C (93.9 F)
1959
33.3 C (91.9 F)
1960
33.9 C (93.0 F)
1961
35.6 C (96.1 F)
1962
33.3 C (91.9 F)
1963
34.4 C (93.9 F)
1964
35.0 C (95.0 F)
1965
32.2 C (90.0 F)
1966
31.7 C (89.1 F)
1967
36.7 C (98.1 F)
1968
30.6 C (87.1 F)
1969
35.0 C (95.0 F)
1970
36.1 C (97.0 F)
1971
33.9 C (93.0 F)
1972
33.9 C (93.0 F)
1973
33.9 C (93.0 F)
1974
32.8 C (91.0 F)
1975
32.2 C (90.0 F)
1976
30.6 C (87.1 F)
1977
31.1 C (88.0 F)
1978
32.2 C (90.0 F)
1979
33.3 C (91.9 F)
1980
33.0 C (91.4 F)
1981
32.0 C (89.6 F)
1982
30.0 C (86.0 F)
1983
34.5 C (94.1 F)
Coldest night (TNn)
The coldest night of the year at Lost River, 1911 to 1983. The record is -47.8 C (-54.0 F) in 1943, marked on the chart; the median year is -42.2 C (-44.0 F).
Coldest night (TNn) at Lost River by year
Year
Coldest night (TNn)
1911
-41.1 C (-42.0 F)
1912
-44.4 C (-47.9 F)
1913
-42.8 C (-45.0 F)
1914
-43.3 C (-45.9 F)
1915
-40.6 C (-41.1 F)
1916
-46.1 C (-51.0 F)
1917
-43.3 C (-45.9 F)
1918
-41.7 C (-43.1 F)
1919
-42.2 C (-44.0 F)
1920
-38.9 C (-38.0 F)
1921
-36.7 C (-34.1 F)
1922
-40.0 C (-40.0 F)
1923
-42.8 C (-45.0 F)
1924
-41.7 C (-43.1 F)
1925
-41.1 C (-42.0 F)
1926
-37.2 C (-35.0 F)
1927
-40.0 C (-40.0 F)
1928
-38.9 C (-38.0 F)
1929
-40.6 C (-41.1 F)
1930
-45.0 C (-49.0 F)
1931
-33.3 C (-27.9 F)
1932
-39.4 C (-38.9 F)
1933
-45.0 C (-49.0 F)
1934
-42.8 C (-45.0 F)
1935
-43.9 C (-47.0 F)
1936
-42.2 C (-44.0 F)
1937
-42.8 C (-45.0 F)
1938
-38.9 C (-38.0 F)
1939
-39.4 C (-38.9 F)
1940
-37.2 C (-35.0 F)
1941
-43.3 C (-45.9 F)
1942
-40.0 C (-40.0 F)
1943
-47.8 C (-54.0 F)
1944
-36.1 C (-33.0 F)
1945
-42.8 C (-45.0 F)
1946
-39.4 C (-38.9 F)
1947
-43.3 C (-45.9 F)
1948
-40.0 C (-40.0 F)
1949
-47.2 C (-53.0 F)
1950
-46.7 C (-52.1 F)
1951
-42.2 C (-44.0 F)
1952
-38.9 C (-38.0 F)
1953
-42.8 C (-45.0 F)
1954
-46.7 C (-52.1 F)
1955
-44.4 C (-47.9 F)
1956
-43.3 C (-45.9 F)
1957
-40.6 C (-41.1 F)
1958
-40.0 C (-40.0 F)
1959
-46.1 C (-51.0 F)
1960
-37.8 C (-36.0 F)
1961
-41.7 C (-43.1 F)
1962
-43.3 C (-45.9 F)
1963
-41.7 C (-43.1 F)
1964
-40.0 C (-40.0 F)
1965
-43.3 C (-45.9 F)
1966
-47.8 C (-54.0 F)
1967
-43.9 C (-47.0 F)
1968
-43.9 C (-47.0 F)
1969
-44.4 C (-47.9 F)
1970
-42.2 C (-44.0 F)
1971
-42.2 C (-44.0 F)
1972
-41.1 C (-42.0 F)
1973
-45.6 C (-50.1 F)
1974
-46.7 C (-52.1 F)
1975
-41.1 C (-42.0 F)
1976
-39.4 C (-38.9 F)
1977
-43.3 C (-45.9 F)
1978
-42.2 C (-44.0 F)
1979
-40.6 C (-41.1 F)
1980
-41.5 C (-42.7 F)
1981
-40.5 C (-40.9 F)
1982
-43.5 C (-46.3 F)
1983
-43.0 C (-45.4 F)
Wettest day (Rx1day)
The wettest day of the year at Lost River, 1911 to 1983. The record is 55.4 mm (2.2 in) in 1927, marked on the chart; the median year is 30.5 mm (1.2 in).
Wettest day (Rx1day) at Lost River by year
Year
Wettest day (Rx1day)
1911
27.7 mm (1.1 in)
1912
23.4 mm (0.9 in)
1913
30.0 mm (1.2 in)
1914
29.7 mm (1.2 in)
1915
38.4 mm (1.5 in)
1916
49.5 mm (1.9 in)
1917
30.5 mm (1.2 in)
1918
37.3 mm (1.5 in)
1919
41.1 mm (1.6 in)
1920
18.0 mm (0.7 in)
1921
42.7 mm (1.7 in)
1922
27.2 mm (1.1 in)
1923
41.4 mm (1.6 in)
1924
33.3 mm (1.3 in)
1925
37.8 mm (1.5 in)
1926
39.4 mm (1.6 in)
1927
55.4 mm (2.2 in)
1928
11.2 mm (0.4 in)
1929
51.1 mm (2.0 in)
1930
46.5 mm (1.8 in)
1931
25.4 mm (1.0 in)
1932
45.7 mm (1.8 in)
1933
29.7 mm (1.2 in)
1934
17.3 mm (0.7 in)
1935
21.6 mm (0.9 in)
1936
23.4 mm (0.9 in)
1937
42.4 mm (1.7 in)
1938
25.1 mm (1.0 in)
1939
32.5 mm (1.3 in)
1940
32.8 mm (1.3 in)
1941
22.4 mm (0.9 in)
1942
40.4 mm (1.6 in)
1943
23.9 mm (0.9 in)
1944
27.4 mm (1.1 in)
1945
28.2 mm (1.1 in)
1946
24.9 mm (1.0 in)
1947
25.7 mm (1.0 in)
1948
22.4 mm (0.9 in)
1949
25.9 mm (1.0 in)
1950
18.5 mm (0.7 in)
1951
47.5 mm (1.9 in)
1952
36.3 mm (1.4 in)
1953
40.1 mm (1.6 in)
1954
36.1 mm (1.4 in)
1955
27.2 mm (1.1 in)
1956
45.2 mm (1.8 in)
1957
30.0 mm (1.2 in)
1958
25.4 mm (1.0 in)
1959
41.1 mm (1.6 in)
1960
39.6 mm (1.6 in)
1961
22.6 mm (0.9 in)
1962
26.9 mm (1.1 in)
1963
24.6 mm (1.0 in)
1964
27.2 mm (1.1 in)
1965
22.4 mm (0.9 in)
1966
23.4 mm (0.9 in)
1967
40.1 mm (1.6 in)
1968
40.6 mm (1.6 in)
1969
33.5 mm (1.3 in)
1970
25.4 mm (1.0 in)
1971
35.1 mm (1.4 in)
1972
49.3 mm (1.9 in)
1973
47.8 mm (1.9 in)
1974
42.7 mm (1.7 in)
1975
38.6 mm (1.5 in)
1976
23.6 mm (0.9 in)
1977
32.0 mm (1.3 in)
1978
26.2 mm (1.0 in)
1979
36.8 mm (1.4 in)
1980
24.2 mm (1.0 in)
1981
36.0 mm (1.4 in)
1982
32.7 mm (1.3 in)
1983
29.4 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Lost River, 1911 to 1983. The record is 138.6 mm (5.5 in) in 1973, marked on the chart; the median year is 48.7 mm (1.9 in).
Wettest five days (Rx5day) at Lost River by year
Year
Wettest five days (Rx5day)
1911
38.7 mm (1.5 in)
1912
47.6 mm (1.9 in)
1913
94.0 mm (3.7 in)
1914
35.8 mm (1.4 in)
1915
51.6 mm (2.0 in)
1916
109.2 mm (4.3 in)
1917
58.7 mm (2.3 in)
1918
39.9 mm (1.6 in)
1919
65.3 mm (2.6 in)
1920
28.6 mm (1.1 in)
1921
55.2 mm (2.2 in)
1922
51.9 mm (2.0 in)
1923
53.1 mm (2.1 in)
1924
34.5 mm (1.4 in)
1925
57.4 mm (2.3 in)
1926
65.6 mm (2.6 in)
1927
76.0 mm (3.0 in)
1928
20.3 mm (0.8 in)
1929
58.8 mm (2.3 in)
1930
68.3 mm (2.7 in)
1931
45.2 mm (1.8 in)
1932
89.7 mm (3.5 in)
1933
43.1 mm (1.7 in)
1934
31.3 mm (1.2 in)
1935
33.0 mm (1.3 in)
1936
30.7 mm (1.2 in)
1937
99.3 mm (3.9 in)
1938
54.1 mm (2.1 in)
1939
52.5 mm (2.1 in)
1940
51.9 mm (2.0 in)
1941
35.3 mm (1.4 in)
1942
72.6 mm (2.9 in)
1943
31.2 mm (1.2 in)
1944
53.5 mm (2.1 in)
1945
35.7 mm (1.4 in)
1946
29.7 mm (1.2 in)
1947
42.2 mm (1.7 in)
1948
42.2 mm (1.7 in)
1949
47.7 mm (1.9 in)
1950
36.0 mm (1.4 in)
1951
51.6 mm (2.0 in)
1952
59.5 mm (2.3 in)
1953
46.5 mm (1.8 in)
1954
49.6 mm (2.0 in)
1955
44.7 mm (1.8 in)
1956
48.7 mm (1.9 in)
1957
41.9 mm (1.6 in)
1958
44.2 mm (1.7 in)
1959
74.4 mm (2.9 in)
1960
49.2 mm (1.9 in)
1961
51.0 mm (2.0 in)
1962
39.2 mm (1.5 in)
1963
30.9 mm (1.2 in)
1964
41.3 mm (1.6 in)
1965
32.6 mm (1.3 in)
1966
45.0 mm (1.8 in)
1967
51.6 mm (2.0 in)
1968
73.1 mm (2.9 in)
1969
78.7 mm (3.1 in)
1970
41.2 mm (1.6 in)
1971
72.0 mm (2.8 in)
1972
53.3 mm (2.1 in)
1973
138.6 mm (5.5 in)
1974
46.7 mm (1.8 in)
1975
51.1 mm (2.0 in)
1976
43.8 mm (1.7 in)
1977
44.7 mm (1.8 in)
1978
44.8 mm (1.8 in)
1979
44.2 mm (1.7 in)
1980
47.8 mm (1.9 in)
1981
51.0 mm (2.0 in)
1982
59.0 mm (2.3 in)
1983
50.3 mm (2.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Lost River, 1911 to 1983. The record is 49 days in 1924, marked on the chart; the median year is 28 days.
Longest dry spell (CDD) at Lost River by year
Year
Longest dry spell (CDD)
1911
20 days
1912
26 days
1913
20 days
1914
28 days
1915
31 days
1916
11 days
1917
28 days
1918
21 days
1919
25 days
1920
14 days
1921
19 days
1922
20 days
1923
30 days
1924
49 days
1925
26 days
1926
37 days
1927
38 days
1928
34 days
1929
25 days
1930
41 days
1931
18 days
1932
42 days
1933
27 days
1934
30 days
1935
40 days
1936
32 days
1937
28 days
1938
38 days
1939
26 days
1940
28 days
1941
23 days
1942
30 days
1943
34 days
1944
31 days
1945
28 days
1946
36 days
1947
31 days
1948
28 days
1949
23 days
1950
37 days
1951
33 days
1952
44 days
1953
33 days
1954
33 days
1955
19 days
1956
21 days
1957
24 days
1958
28 days
1959
21 days
1960
29 days
1961
32 days
1962
25 days
1963
27 days
1964
40 days
1965
28 days
1966
25 days
1967
20 days
1968
36 days
1969
24 days
1970
23 days
1971
36 days
1972
21 days
1973
23 days
1974
24 days
1975
18 days
1976
33 days
1977
23 days
1978
27 days
1979
18 days
1980
47 days
1981
31 days
1982
25 days
1983
17 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
67 years with a frost
Across 67 years with a frost, the median last spring frost at Lost River falls on 5 June and the median first autumn frost on 5 September, which leaves a median of 94 days between them.
In 1953 to 1983 the median growing season was 95 days. That is 1 day more than in 1912 to 1944.
Fitted over all years, the growing season changes by +0.6 days per decade at this station.
Frost dates and growing season at Lost River
Measure
Median, all years
Earliest period (1912 to 1944)
Recent period (1953 to 1983)
Recent against earliest
Fitted trend
Last spring frost
5 June
7 June
31 May
7 days earlier
-1.1 days per decade
First autumn frost
5 September
6 September
5 September
1 day earlier
-0.5 days per decade
Growing days
94 days
94 days
95 days
1 day more
+0.6 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
53 years, 1926 to 1983
A day with at least 31.1 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 60.3 mm (2.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Lost River: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
31.1 mm (1.2 in)
5 years
39.8 mm (1.6 in)
10 years
45.2 mm (1.8 in)
25 years
51.6 mm (2.0 in)
50 years
56.1 mm (2.2 in)
100 years
60.3 mm (2.4 in)
Longer than the 53 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, 53 years of values from 1926 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: 55.4 mm (2.2 in) in 1927; 51.1 mm (2.0 in) in 1929; 49.3 mm (1.9 in) in 1972.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Lost River standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Lost River 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.