Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Sprague. 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 Sprague, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
11.1 C (52.0 F)
-48.3 C (-54.9 F)
n/a
n/a
Feb
12.8 C (55.0 F)
-47.2 C (-53.0 F)
n/a
n/a
Mar
23.9 C (75.0 F)
-45.6 C (-50.1 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-30.0 C (-22.0 F)
n/a
n/a
May
35.0 C (95.0 F)
-13.3 C (8.1 F)
n/a
n/a
Jun
36.7 C (98.1 F)
-6.7 C (19.9 F)
n/a
n/a
Jul
38.9 C (102.0 F)
-1.7 C (28.9 F)
n/a
n/a
Aug
35.6 C (96.1 F)
-5.6 C (21.9 F)
n/a
n/a
Sep
35.0 C (95.0 F)
-11.1 C (12.0 F)
n/a
n/a
Oct
30.0 C (86.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Nov
22.2 C (72.0 F)
-36.7 C (-34.1 F)
n/a
n/a
Dec
9.4 C (48.9 F)
-46.7 C (-52.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Sprague still stand. 1917 holds the most, with 60.
Standing records at Sprague by the year they were set
Year set
Standing records
1915
1
1916
29
1917
60
1918
36
1919
54
1920
15
1921
20
1922
17
1923
33
1924
23
1925
21
1926
26
1927
14
1928
21
1929
24
1930
14
1931
24
1932
25
1933
20
1934
30
1935
23
1936
48
1937
25
1938
30
1939
25
1940
23
1941
22
1942
27
1943
17
1944
15
1945
25
1946
29
1947
26
1948
20
1949
20
1950
27
1951
14
1952
31
1953
22
1954
22
1955
12
1956
14
1957
9
1958
22
1959
8
1960
4
1961
18
1962
22
1963
21
1964
14
1965
9
1966
17
1967
16
1968
14
1969
16
1970
11
1971
8
1972
18
1973
19
1974
19
1975
15
1976
24
1977
26
1978
12
1979
15
1980
18
1981
21
1982
16
1983
28
All-Time Record Progression
2 new records
2 all-time records were set at Sprague between 30 January 1950 and 14 January 1972. Each dot is a new record.
When Sprague set new all-time records
Date
Kind
Detail
1950-01-30
Record low minimum temperature
Record low minimum temperature -48.3 C (-54.9 F)
1972-01-14
Record low maximum temperature
Record low maximum temperature -34.4 C (-29.9 F)
Wettest Day of Each Month
Aug: 106.7 mm (4.2 in)
The wettest day on record for each calendar month at Sprague. The most was 106.7 mm (4.2 in) on 15 August 1937.
Record daily precipitation for each month at Sprague
Month
Record daily precipitation (mm)
Date
Jan
22.9 mm (0.9 in)
10 January 1916
Feb
25.4 mm (1.0 in)
20 February 1955
Mar
33.0 mm (1.3 in)
7 March 1916
Apr
60.5 mm (2.4 in)
20 April 1974
May
70.6 mm (2.8 in)
1 May 1930
Jun
66.0 mm (2.6 in)
16 June 1970
Jul
78.0 mm (3.1 in)
16 July 1937
Aug
106.7 mm (4.2 in)
15 August 1937
Sep
84.8 mm (3.3 in)
14 September 1936
Oct
84.8 mm (3.3 in)
16 October 1934
Nov
30.5 mm (1.2 in)
17 November 1958
Dec
30.5 mm (1.2 in)
7 December 1916
Period of Record Coverage
1915 to 1983
Complete yearUnder 90 percent of days
69 years of record at Sprague, 1915 to 1983. 2 years have data for under 90 percent of days and are left out of rankings: 1915, 1955.
Cooler than the station meanWarmer than the station mean
One stripe for each of 63 complete years at Sprague, 1917 to 1983. Blue stripes are years cooler than the station's own mean of 1.7 C (35.0 F); red stripes are warmer. The coolest year was 1917, at -0.6 C (31.0 F), and the warmest was 1981, at 3.9 C (38.9 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Sprague as warming stripes, 1917 to 1983
Year
Annual mean temperature
Difference from the station mean
1917
-0.6 C
-2.26 C
1919
1.6 C
-0.07 C
1920
1.2 C
-0.52 C
1921
1.7 C
-0.01 C
1922
2.1 C
+0.39 C
1923
1.4 C
-0.33 C
1924
0.0 C
-1.65 C
1925
1.3 C
-0.37 C
1926
0.9 C
-0.76 C
1927
0.4 C
-1.28 C
1928
1.7 C
+0.01 C
1929
-0.3 C
-1.94 C
1930
1.5 C
-0.16 C
1931
3.5 C
+1.80 C
1932
0.9 C
-0.81 C
1933
0.6 C
-1.04 C
1934
1.6 C
-0.10 C
1935
1.1 C
-0.54 C
1936
-0.1 C
-1.78 C
1937
1.4 C
-0.31 C
1938
2.8 C
+1.09 C
1939
2.5 C
+0.77 C
1940
1.9 C
+0.26 C
1941
2.6 C
+0.93 C
1942
2.4 C
+0.70 C
1943
1.1 C
-0.59 C
1944
2.9 C
+1.26 C
1945
1.7 C
+0.03 C
1946
2.1 C
+0.44 C
1947
1.8 C
+0.07 C
1948
2.0 C
+0.34 C
1949
1.9 C
+0.23 C
1950
-0.4 C
-2.12 C
1951
0.9 C
-0.74 C
1952
3.1 C
+1.41 C
1953
3.1 C
+1.37 C
1956
1.6 C
-0.08 C
1957
2.1 C
+0.44 C
1958
2.6 C
+0.91 C
1959
1.8 C
+0.11 C
1961
2.6 C
+0.93 C
1962
1.8 C
+0.12 C
1963
2.8 C
+1.08 C
1964
2.0 C
+0.28 C
1965
0.8 C
-0.86 C
1966
0.8 C
-0.91 C
1967
1.1 C
-0.55 C
1968
1.8 C
+0.10 C
1969
2.1 C
+0.45 C
1970
1.2 C
-0.48 C
1971
1.6 C
-0.13 C
1972
0.6 C
-1.11 C
1973
3.4 C
+1.70 C
1974
1.8 C
+0.12 C
1975
2.0 C
+0.29 C
1976
1.9 C
+0.18 C
1977
2.8 C
+1.14 C
1978
1.2 C
-0.45 C
1979
0.6 C
-1.10 C
1980
2.2 C
+0.52 C
1981
3.9 C
+2.18 C
1982
1.2 C
-0.53 C
1983
3.4 C
+1.74 C
The annual mean temperature here has risen by 0.16 C (0.04 to 0.28) per decade over 1917 to 1983. In Fahrenheit: 0.3 F (0.1 to 0.5) per decade. The slope is a straight line fitted to 63 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Sprague
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.16 C (0.04 to 0.28) per decade
0.3 F (0.1 to 0.5) per decade
1917 to 1983
63
Rise
Mean daily maximum
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.4) per decade
1917 to 1983
63
Not clearly different from zero
Mean daily minimum
0.2 C (0.1 to 0.4) per decade
0.4 F (0.2 to 0.7) per decade
1917 to 1983
63
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
1915 to 1983
Yearly extremes at Sprague: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.9 C (102.0 F)
1936
33.9 C (93.0 F)
69
Coldest night (TNn)
-48.3 C (-54.9 F)
1950
-42.2 C (-44.0 F)
69
Wettest day (Rx1day)
106.7 mm (4.2 in)
1937
45.0 mm (1.8 in)
69
Wettest five days (Rx5day)
185.5 mm (7.3 in)
1937
64.8 mm (2.6 in)
69
Longest dry spell (CDD)
53 days
1948
25 days
69
Hottest day (TXx)
The hottest day of the year at Sprague, 1915 to 1983. The record is 38.9 C (102.0 F) in 1936, marked on the chart; the median year is 33.9 C (93.0 F).
Hottest day (TXx) at Sprague by year
Year
Hottest day (TXx)
1915
21.1 C (70.0 F)
1916
34.4 C (93.9 F)
1917
36.1 C (97.0 F)
1918
33.9 C (93.0 F)
1919
33.3 C (91.9 F)
1920
31.1 C (88.0 F)
1921
35.0 C (95.0 F)
1922
31.1 C (88.0 F)
1923
33.3 C (91.9 F)
1924
30.6 C (87.1 F)
1925
33.3 C (91.9 F)
1926
33.3 C (91.9 F)
1927
28.9 C (84.0 F)
1928
32.2 C (90.0 F)
1929
33.9 C (93.0 F)
1930
32.2 C (90.0 F)
1931
36.7 C (98.1 F)
1932
33.9 C (93.0 F)
1933
34.4 C (93.9 F)
1934
35.0 C (95.0 F)
1935
32.2 C (90.0 F)
1936
38.9 C (102.0 F)
1937
35.0 C (95.0 F)
1938
35.0 C (95.0 F)
1939
37.2 C (99.0 F)
1940
37.8 C (100.0 F)
1941
35.6 C (96.1 F)
1942
31.1 C (88.0 F)
1943
34.4 C (93.9 F)
1944
32.2 C (90.0 F)
1945
34.4 C (93.9 F)
1946
35.6 C (96.1 F)
1947
34.4 C (93.9 F)
1948
33.9 C (93.0 F)
1949
34.4 C (93.9 F)
1950
33.3 C (91.9 F)
1951
33.3 C (91.9 F)
1952
33.9 C (93.0 F)
1953
33.9 C (93.0 F)
1954
32.2 C (90.0 F)
1955
33.3 C (91.9 F)
1956
33.3 C (91.9 F)
1957
31.7 C (89.1 F)
1958
32.8 C (91.0 F)
1959
33.9 C (93.0 F)
1960
31.7 C (89.1 F)
1961
36.1 C (97.0 F)
1962
30.0 C (86.0 F)
1963
32.8 C (91.0 F)
1964
36.1 C (97.0 F)
1965
33.9 C (93.0 F)
1966
32.8 C (91.0 F)
1967
33.9 C (93.0 F)
1968
30.0 C (86.0 F)
1969
34.4 C (93.9 F)
1970
33.3 C (91.9 F)
1971
31.1 C (88.0 F)
1972
33.3 C (91.9 F)
1973
31.1 C (88.0 F)
1974
33.9 C (93.0 F)
1975
35.6 C (96.1 F)
1976
35.0 C (95.0 F)
1977
32.8 C (91.0 F)
1978
34.4 C (93.9 F)
1979
32.8 C (91.0 F)
1980
35.0 C (95.0 F)
1981
33.0 C (91.4 F)
1982
32.0 C (89.6 F)
1983
35.0 C (95.0 F)
Coldest night (TNn)
The coldest night of the year at Sprague, 1915 to 1983. The record is -48.3 C (-54.9 F) in 1950, marked on the chart; the median year is -42.2 C (-44.0 F).
Coldest night (TNn) at Sprague by year
Year
Coldest night (TNn)
1915
-13.3 C (8.1 F)
1916
-46.1 C (-51.0 F)
1917
-46.7 C (-52.1 F)
1918
-46.7 C (-52.1 F)
1919
-42.8 C (-45.0 F)
1920
-42.2 C (-44.0 F)
1921
-42.2 C (-44.0 F)
1922
-44.4 C (-47.9 F)
1923
-42.8 C (-45.0 F)
1924
-42.2 C (-44.0 F)
1925
-41.1 C (-42.0 F)
1926
-39.4 C (-38.9 F)
1927
-42.2 C (-44.0 F)
1928
-35.6 C (-32.1 F)
1929
-40.6 C (-41.1 F)
1930
-42.8 C (-45.0 F)
1931
-29.4 C (-20.9 F)
1932
-40.6 C (-41.1 F)
1933
-46.7 C (-52.1 F)
1934
-43.9 C (-47.0 F)
1935
-41.1 C (-42.0 F)
1936
-45.6 C (-50.1 F)
1937
-42.8 C (-45.0 F)
1938
-47.8 C (-54.0 F)
1939
-47.2 C (-53.0 F)
1940
-42.2 C (-44.0 F)
1941
-41.1 C (-42.0 F)
1942
-37.8 C (-36.0 F)
1943
-43.9 C (-47.0 F)
1944
-38.9 C (-38.0 F)
1945
-38.9 C (-38.0 F)
1946
-43.9 C (-47.0 F)
1947
-41.1 C (-42.0 F)
1948
-45.0 C (-49.0 F)
1949
-46.7 C (-52.1 F)
1950
-48.3 C (-54.9 F)
1951
-43.3 C (-45.9 F)
1952
-36.7 C (-34.1 F)
1953
-36.7 C (-34.1 F)
1954
-43.9 C (-47.0 F)
1955
-45.6 C (-50.1 F)
1956
-38.9 C (-38.0 F)
1957
-40.6 C (-41.1 F)
1958
-38.9 C (-38.0 F)
1959
-41.7 C (-43.1 F)
1960
-35.0 C (-31.0 F)
1961
-38.3 C (-36.9 F)
1962
-45.6 C (-50.1 F)
1963
-39.4 C (-38.9 F)
1964
-38.3 C (-36.9 F)
1965
-42.2 C (-44.0 F)
1966
-45.0 C (-49.0 F)
1967
-43.3 C (-45.9 F)
1968
-48.3 C (-54.9 F)
1969
-40.6 C (-41.1 F)
1970
-42.2 C (-44.0 F)
1971
-40.6 C (-41.1 F)
1972
-43.3 C (-45.9 F)
1973
-43.3 C (-45.9 F)
1974
-43.9 C (-47.0 F)
1975
-37.8 C (-36.0 F)
1976
-40.6 C (-41.1 F)
1977
-42.2 C (-44.0 F)
1978
-38.3 C (-36.9 F)
1979
-43.9 C (-47.0 F)
1980
-38.5 C (-37.3 F)
1981
-42.0 C (-43.6 F)
1982
-45.0 C (-49.0 F)
1983
-39.0 C (-38.2 F)
Wettest day (Rx1day)
The wettest day of the year at Sprague, 1915 to 1983. The record is 106.7 mm (4.2 in) in 1937, marked on the chart; the median year is 45.0 mm (1.8 in).
Wettest day (Rx1day) at Sprague by year
Year
Wettest day (Rx1day)
1915
24.4 mm (1.0 in)
1916
34.0 mm (1.3 in)
1917
33.0 mm (1.3 in)
1918
46.2 mm (1.8 in)
1919
12.7 mm (0.5 in)
1920
52.1 mm (2.1 in)
1921
35.6 mm (1.4 in)
1922
45.7 mm (1.8 in)
1923
31.8 mm (1.3 in)
1924
53.1 mm (2.1 in)
1925
36.6 mm (1.4 in)
1926
41.4 mm (1.6 in)
1927
39.6 mm (1.6 in)
1928
55.1 mm (2.2 in)
1929
32.0 mm (1.3 in)
1930
70.6 mm (2.8 in)
1931
40.9 mm (1.6 in)
1932
52.1 mm (2.1 in)
1933
25.4 mm (1.0 in)
1934
84.8 mm (3.3 in)
1935
69.6 mm (2.7 in)
1936
84.8 mm (3.3 in)
1937
106.7 mm (4.2 in)
1938
25.7 mm (1.0 in)
1939
58.4 mm (2.3 in)
1940
25.9 mm (1.0 in)
1941
42.7 mm (1.7 in)
1942
60.5 mm (2.4 in)
1943
47.0 mm (1.9 in)
1944
64.0 mm (2.5 in)
1945
87.9 mm (3.5 in)
1946
41.1 mm (1.6 in)
1947
33.3 mm (1.3 in)
1948
39.1 mm (1.5 in)
1949
45.5 mm (1.8 in)
1950
57.4 mm (2.3 in)
1951
39.1 mm (1.5 in)
1952
31.5 mm (1.2 in)
1953
33.3 mm (1.3 in)
1954
21.1 mm (0.8 in)
1955
39.4 mm (1.6 in)
1956
66.3 mm (2.6 in)
1957
52.1 mm (2.1 in)
1958
32.3 mm (1.3 in)
1959
52.8 mm (2.1 in)
1960
40.4 mm (1.6 in)
1961
24.9 mm (1.0 in)
1962
56.4 mm (2.2 in)
1963
50.5 mm (2.0 in)
1964
50.0 mm (2.0 in)
1965
45.0 mm (1.8 in)
1966
59.2 mm (2.3 in)
1967
31.8 mm (1.3 in)
1968
73.7 mm (2.9 in)
1969
71.9 mm (2.8 in)
1970
76.2 mm (3.0 in)
1971
54.6 mm (2.1 in)
1972
47.8 mm (1.9 in)
1973
69.3 mm (2.7 in)
1974
62.5 mm (2.5 in)
1975
31.8 mm (1.3 in)
1976
35.6 mm (1.4 in)
1977
44.7 mm (1.8 in)
1978
31.8 mm (1.3 in)
1979
34.0 mm (1.3 in)
1980
35.0 mm (1.4 in)
1981
46.0 mm (1.8 in)
1982
41.8 mm (1.6 in)
1983
47.0 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Sprague, 1915 to 1983. The record is 185.5 mm (7.3 in) in 1937, marked on the chart; the median year is 64.8 mm (2.6 in).
Wettest five days (Rx5day) at Sprague by year
Year
Wettest five days (Rx5day)
1915
42.9 mm (1.7 in)
1916
55.4 mm (2.2 in)
1917
43.7 mm (1.7 in)
1918
56.9 mm (2.2 in)
1919
17.8 mm (0.7 in)
1920
63.7 mm (2.5 in)
1921
43.5 mm (1.7 in)
1922
90.2 mm (3.6 in)
1923
54.1 mm (2.1 in)
1924
55.4 mm (2.2 in)
1925
54.1 mm (2.1 in)
1926
44.4 mm (1.7 in)
1927
39.6 mm (1.6 in)
1928
58.7 mm (2.3 in)
1929
39.4 mm (1.6 in)
1930
74.7 mm (2.9 in)
1931
52.3 mm (2.1 in)
1932
83.9 mm (3.3 in)
1933
27.9 mm (1.1 in)
1934
112.0 mm (4.4 in)
1935
85.1 mm (3.4 in)
1936
95.5 mm (3.8 in)
1937
185.5 mm (7.3 in)
1938
50.8 mm (2.0 in)
1939
78.8 mm (3.1 in)
1940
44.4 mm (1.7 in)
1941
87.6 mm (3.4 in)
1942
130.6 mm (5.1 in)
1943
55.2 mm (2.2 in)
1944
76.4 mm (3.0 in)
1945
94.5 mm (3.7 in)
1946
72.3 mm (2.8 in)
1947
82.3 mm (3.2 in)
1948
49.5 mm (1.9 in)
1949
72.7 mm (2.9 in)
1950
99.8 mm (3.9 in)
1951
48.5 mm (1.9 in)
1952
54.6 mm (2.1 in)
1953
34.8 mm (1.4 in)
1954
36.0 mm (1.4 in)
1955
81.6 mm (3.2 in)
1956
127.4 mm (5.0 in)
1957
68.1 mm (2.7 in)
1958
82.3 mm (3.2 in)
1959
69.1 mm (2.7 in)
1960
43.2 mm (1.7 in)
1961
40.1 mm (1.6 in)
1962
97.3 mm (3.8 in)
1963
63.9 mm (2.5 in)
1964
98.7 mm (3.9 in)
1965
70.1 mm (2.8 in)
1966
70.2 mm (2.8 in)
1967
64.8 mm (2.6 in)
1968
91.2 mm (3.6 in)
1969
76.8 mm (3.0 in)
1970
85.9 mm (3.4 in)
1971
54.9 mm (2.2 in)
1972
50.9 mm (2.0 in)
1973
97.0 mm (3.8 in)
1974
97.0 mm (3.8 in)
1975
51.0 mm (2.0 in)
1976
68.9 mm (2.7 in)
1977
76.7 mm (3.0 in)
1978
55.1 mm (2.2 in)
1979
40.4 mm (1.6 in)
1980
53.8 mm (2.1 in)
1981
90.8 mm (3.6 in)
1982
60.2 mm (2.4 in)
1983
77.4 mm (3.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Sprague, 1915 to 1983. The record is 53 days in 1948, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Sprague by year
Year
Longest dry spell (CDD)
1915
17 days
1916
23 days
1917
42 days
1918
29 days
1919
29 days
1920
29 days
1921
25 days
1922
28 days
1923
26 days
1924
26 days
1925
25 days
1926
22 days
1927
23 days
1928
30 days
1929
19 days
1930
35 days
1931
26 days
1932
20 days
1933
31 days
1934
25 days
1935
23 days
1936
39 days
1937
26 days
1938
31 days
1939
44 days
1940
22 days
1941
23 days
1942
27 days
1943
24 days
1944
30 days
1945
30 days
1946
28 days
1947
25 days
1948
53 days
1949
27 days
1950
25 days
1951
23 days
1952
33 days
1953
26 days
1954
34 days
1955
34 days
1956
32 days
1957
42 days
1958
27 days
1959
19 days
1960
22 days
1961
25 days
1962
21 days
1963
30 days
1964
24 days
1965
19 days
1966
25 days
1967
24 days
1968
29 days
1969
22 days
1970
25 days
1971
21 days
1972
21 days
1973
21 days
1974
25 days
1975
21 days
1976
37 days
1977
14 days
1978
24 days
1979
23 days
1980
28 days
1981
25 days
1982
15 days
1983
23 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
63 years with a frost
Across 63 years with a frost, the median last spring frost at Sprague falls on 7 June and the median first autumn frost on 29 August, which leaves a median of 87 days between them.
In 1951 to 1983 the median growing season was 98 days. That is 21 days more than in 1917 to 1947.
Fitted over all years, the growing season changes by +7.3 days per decade at this station.
Frost dates and growing season at Sprague
Measure
Median, all years
Earliest period (1917 to 1947)
Recent period (1951 to 1983)
Recent against earliest
Fitted trend
Last spring frost
7 June
11 June
1 June
10 days earlier
-2.0 days per decade
First autumn frost
29 August
25 August
6 September
12 days later
+5.3 days per decade
Growing days
87 days
77 days
98 days
21 days more
+7.3 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
64 years, 1916 to 1983
A day with at least 45.5 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 104.5 mm (4.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Sprague: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
45.5 mm (1.8 in)
5 years
61.8 mm (2.4 in)
10 years
72.4 mm (2.9 in)
25 years
85.5 mm (3.4 in)
50 years
95.1 mm (3.7 in)
100 years
104.5 mm (4.1 in)
Longer than the 64 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, 64 years of values from 1916 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: 106.7 mm (4.2 in) in 1937; 87.9 mm (3.5 in) in 1945; 84.8 mm (3.3 in) in 1934.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Sprague, at 1944. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1944 ran 0.3 C (0.5 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Sprague, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1944
+0.3
+0.5
likely
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 Sprague standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sprague 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.