Record envelope, standing records and threshold days for Warren (USC00109560), Idaho, United States, with 117 years of record.
Key Facts for Warren
Warren (USC00109560) is a weather station in Idaho, United States at 45.27 latitude and -115.68 longitude, 1,801 m (5,907 ft) above sea level.
The station reports from 1895 to 2011, 117 years of record.
1,464 records set at Warren still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Warren tied a daily record low minimum temperature of -12.2 C (10.0 F) on 26 October 2011.
About the Station
Location: Idaho, United States, 45.27 latitude, -115.68 longitude.
Elevation: 1,801 m (5,907 ft).
Period of record: 1895 to 2011, 117 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 Warren. 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 Warren, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
14.4 C (57.9 F)
-42.2 C (-44.0 F)
n/a
n/a
Feb
16.7 C (62.1 F)
-44.4 C (-47.9 F)
n/a
n/a
Mar
21.1 C (70.0 F)
-35.0 C (-31.0 F)
n/a
n/a
Apr
26.7 C (80.1 F)
-23.9 C (-11.0 F)
n/a
n/a
May
32.2 C (90.0 F)
-16.7 C (1.9 F)
n/a
n/a
Jun
33.3 C (91.9 F)
-8.3 C (17.1 F)
n/a
n/a
Jul
36.7 C (98.1 F)
-7.2 C (19.0 F)
n/a
n/a
Aug
37.8 C (100.0 F)
-10.0 C (14.0 F)
n/a
n/a
Sep
32.2 C (90.0 F)
-15.0 C (5.0 F)
n/a
n/a
Oct
27.8 C (82.0 F)
-24.4 C (-11.9 F)
n/a
n/a
Nov
20.6 C (69.1 F)
-38.9 C (-38.0 F)
n/a
n/a
Dec
12.8 C (55.0 F)
-42.8 C (-45.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Warren still stand. 1897 holds the most, with 68.
Standing records at Warren by the year they were set
Year set
Standing records
1895
45
1896
61
1897
68
1898
43
1922
12
1923
16
1924
29
1925
17
1926
24
1927
39
1928
40
1929
17
1930
1
1931
5
1932
11
1933
22
1934
5
1935
11
1936
9
1937
55
1938
16
1959
7
1960
22
1961
17
1962
37
1963
22
1964
28
1965
33
1966
21
1967
15
1968
12
1969
19
1970
25
1971
23
1972
24
1973
24
1974
16
1975
18
1976
16
1977
17
1978
24
1979
15
1980
15
1981
11
1982
13
1983
21
1984
23
1985
24
1986
16
1987
22
1988
22
1989
23
1990
14
1991
11
1992
19
1993
16
1994
14
1995
13
1996
16
1997
13
1998
18
1999
28
2000
20
2001
11
2002
10
2003
22
2004
9
2005
13
2006
10
2007
6
2008
8
2009
10
2010
5
2011
7
Wettest Day of Each Month
Dec: 130.0 mm (5.1 in)
The wettest day on record for each calendar month at Warren. The most was 130.0 mm (5.1 in) on 11 December 1929.
Record daily precipitation for each month at Warren
Month
Record daily precipitation (mm)
Date
Jan
75.2 mm (3.0 in)
19 January 2011
Feb
47.0 mm (1.9 in)
15 February 1972
Mar
47.0 mm (1.9 in)
9 March 1967
Apr
33.3 mm (1.3 in)
24 April 1996
May
38.1 mm (1.5 in)
18 May 1996
Jun
42.9 mm (1.7 in)
14 June 2006
Jul
56.9 mm (2.2 in)
13 July 2007
Aug
48.3 mm (1.9 in)
16 August 1995
Sep
33.0 mm (1.3 in)
9 September 1998
Oct
62.2 mm (2.4 in)
11 October 1962
Nov
54.9 mm (2.2 in)
7 November 1980
Dec
130.0 mm (5.1 in)
11 December 1929
Period of Record Coverage
1895 to 2011
Complete yearUnder 90 percent of days
74 years of record at Warren, 1895 to 2011. 43 years have data for under 90 percent of days and are left out of rankings: 1895, 1922, 1927, 1928, 1929, 1930, 1931, 1932 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 44 complete years at Warren, 1896 to 1999. Blue stripes are years cooler than the station's own mean of 3.0 C (37.5 F); red stripes are warmer. The coolest year was 1964, at 1.2 C (34.2 F), and the warmest was 1896, at 5.1 C (41.2 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Warren as warming stripes, 1896 to 1999
Year
Annual mean temperature
Difference from the station mean
1896
5.1 C
+2.06 C
1897
5.0 C
+2.00 C
1923
2.7 C
-0.32 C
1924
2.6 C
-0.46 C
1925
3.8 C
+0.73 C
1926
3.6 C
+0.52 C
1960
2.8 C
-0.24 C
1961
3.3 C
+0.26 C
1962
2.5 C
-0.53 C
1963
3.0 C
-0.05 C
1964
1.2 C
-1.81 C
1965
1.3 C
-1.75 C
1966
2.6 C
-0.44 C
1967
3.0 C
+0.01 C
1968
2.6 C
-0.45 C
1969
3.0 C
-0.08 C
1970
2.7 C
-0.35 C
1971
2.4 C
-0.62 C
1972
2.6 C
-0.47 C
1973
3.2 C
+0.16 C
1974
3.2 C
+0.12 C
1975
2.3 C
-0.75 C
1976
2.9 C
-0.10 C
1977
3.0 C
-0.07 C
1978
2.6 C
-0.43 C
1979
2.8 C
-0.19 C
1980
3.7 C
+0.62 C
1981
3.8 C
+0.81 C
1982
2.1 C
-0.98 C
1983
3.2 C
+0.19 C
1985
1.7 C
-1.37 C
1986
3.9 C
+0.82 C
1988
3.9 C
+0.84 C
1989
3.4 C
+0.35 C
1990
3.4 C
+0.37 C
1991
3.3 C
+0.24 C
1992
3.9 C
+0.91 C
1993
2.5 C
-0.58 C
1994
3.4 C
+0.37 C
1995
3.6 C
+0.61 C
1996
2.9 C
-0.13 C
1997
3.1 C
+0.04 C
1998
3.6 C
+0.55 C
1999
2.7 C
-0.35 C
The fitted trend in annual mean temperature here over 1896 to 1999 is -0.08 C (-0.18 to 0.01) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.15 F (-0.32 to 0.01) per decade. The slope is a straight line fitted to 44 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Warren
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.08 C (-0.18 to 0.01) per decade
-0.15 F (-0.32 to 0.01) per decade
1896 to 1999
44
Not clearly different from zero
Mean daily maximum
-0.11 C (-0.21 to -0.01) per decade
-0.20 F (-0.38 to -0.02) per decade
1896 to 1999
44
Fall
Mean daily minimum
-0.1 C (-0.2 to 0.1) per decade
-0.1 F (-0.3 to 0.1) per decade
1896 to 1999
44
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
1895 to 2011
Yearly extremes at Warren: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.8 C (100.0 F)
1897
32.2 C (90.0 F)
74
Coldest night (TNn)
-44.4 C (-47.9 F)
1933
-33.3 C (-27.9 F)
74
Wettest day (Rx1day)
130.0 mm (5.1 in)
1929
28.7 mm (1.1 in)
73
Wettest five days (Rx5day)
150.3 mm (5.9 in)
1929
47.1 mm (1.9 in)
73
Longest dry spell (CDD)
72 days
1969
25 days
73
Hottest day (TXx)
The hottest day of the year at Warren, 1895 to 2011. The record is 37.8 C (100.0 F) in 1897, marked on the chart; the median year is 32.2 C (90.0 F).
Hottest day (TXx) at Warren by year
Year
Hottest day (TXx)
1895
32.2 C (90.0 F)
1896
35.6 C (96.1 F)
1897
37.8 C (100.0 F)
1898
34.4 C (93.9 F)
1922
30.6 C (87.1 F)
1923
32.2 C (90.0 F)
1924
33.3 C (91.9 F)
1925
30.6 C (87.1 F)
1926
31.7 C (89.1 F)
1927
27.2 C (81.0 F)
1928
30.0 C (86.0 F)
1929
14.4 C (57.9 F)
1930
4.4 C (39.9 F)
1931
27.2 C (81.0 F)
1932
32.2 C (90.0 F)
1933
34.4 C (93.9 F)
1934
35.0 C (95.0 F)
1935
33.9 C (93.0 F)
1936
33.9 C (93.0 F)
1937
32.2 C (90.0 F)
1938
21.7 C (71.1 F)
1959
20.0 C (68.0 F)
1960
33.9 C (93.0 F)
1961
34.4 C (93.9 F)
1962
30.0 C (86.0 F)
1963
30.0 C (86.0 F)
1964
30.6 C (87.1 F)
1965
30.0 C (86.0 F)
1966
32.2 C (90.0 F)
1967
31.7 C (89.1 F)
1968
31.1 C (88.0 F)
1969
33.3 C (91.9 F)
1970
32.2 C (90.0 F)
1971
30.0 C (86.0 F)
1972
30.6 C (87.1 F)
1973
32.8 C (91.0 F)
1974
30.6 C (87.1 F)
1975
31.7 C (89.1 F)
1976
31.1 C (88.0 F)
1977
30.0 C (86.0 F)
1978
30.6 C (87.1 F)
1979
31.1 C (88.0 F)
1980
32.8 C (91.0 F)
1981
30.6 C (87.1 F)
1982
30.0 C (86.0 F)
1983
33.3 C (91.9 F)
1984
34.4 C (93.9 F)
1985
32.2 C (90.0 F)
1986
32.2 C (90.0 F)
1987
30.0 C (86.0 F)
1988
32.2 C (90.0 F)
1989
31.1 C (88.0 F)
1990
32.8 C (91.0 F)
1991
31.1 C (88.0 F)
1992
32.2 C (90.0 F)
1993
28.9 C (84.0 F)
1994
31.7 C (89.1 F)
1995
30.0 C (86.0 F)
1996
31.7 C (89.1 F)
1997
31.1 C (88.0 F)
1998
36.1 C (97.0 F)
1999
32.2 C (90.0 F)
2000
33.3 C (91.9 F)
2001
32.8 C (91.0 F)
2002
36.7 C (98.1 F)
2003
34.4 C (93.9 F)
2004
32.2 C (90.0 F)
2005
32.2 C (90.0 F)
2006
34.4 C (93.9 F)
2007
35.0 C (95.0 F)
2008
33.3 C (91.9 F)
2009
32.8 C (91.0 F)
2010
32.2 C (90.0 F)
2011
31.7 C (89.1 F)
Coldest night (TNn)
The coldest night of the year at Warren, 1895 to 2011. The record is -44.4 C (-47.9 F) in 1933, marked on the chart; the median year is -33.3 C (-27.9 F).
Coldest night (TNn) at Warren by year
Year
Coldest night (TNn)
1895
-33.9 C (-29.0 F)
1896
-38.9 C (-38.0 F)
1897
-34.4 C (-29.9 F)
1898
-32.2 C (-26.0 F)
1922
-31.1 C (-24.0 F)
1923
-35.0 C (-31.0 F)
1924
-42.8 C (-45.0 F)
1925
-22.8 C (-9.0 F)
1926
-34.4 C (-29.9 F)
1927
-38.9 C (-38.0 F)
1928
-30.0 C (-22.0 F)
1929
-37.2 C (-35.0 F)
1930
-25.6 C (-14.1 F)
1931
-24.4 C (-11.9 F)
1932
-36.7 C (-34.1 F)
1933
-44.4 C (-47.9 F)
1934
-6.1 C (21.0 F)
1935
-7.2 C (19.0 F)
1936
-20.6 C (-5.1 F)
1937
-31.7 C (-25.1 F)
1938
-33.9 C (-29.0 F)
1959
-26.7 C (-16.1 F)
1960
-34.4 C (-29.9 F)
1961
-35.0 C (-31.0 F)
1962
-39.4 C (-38.9 F)
1963
-38.9 C (-38.0 F)
1964
-41.1 C (-42.0 F)
1965
-35.0 C (-31.0 F)
1966
-33.3 C (-27.9 F)
1967
-35.0 C (-31.0 F)
1968
-31.7 C (-25.1 F)
1969
-29.4 C (-20.9 F)
1970
-27.8 C (-18.0 F)
1971
-30.6 C (-23.1 F)
1972
-38.3 C (-36.9 F)
1973
-36.1 C (-33.0 F)
1974
-33.9 C (-29.0 F)
1975
-32.2 C (-26.0 F)
1976
-33.3 C (-27.9 F)
1977
-28.9 C (-20.0 F)
1978
-42.8 C (-45.0 F)
1979
-42.2 C (-44.0 F)
1980
-36.1 C (-33.0 F)
1981
-22.2 C (-8.0 F)
1982
-37.8 C (-36.0 F)
1983
-41.7 C (-43.1 F)
1984
-28.9 C (-20.0 F)
1985
-33.9 C (-29.0 F)
1986
-26.7 C (-16.1 F)
1987
-33.3 C (-27.9 F)
1988
-30.6 C (-23.1 F)
1989
-40.6 C (-41.1 F)
1990
-41.1 C (-42.0 F)
1991
-27.2 C (-17.0 F)
1992
-30.0 C (-22.0 F)
1993
-33.3 C (-27.9 F)
1994
-27.2 C (-17.0 F)
1995
-29.4 C (-20.9 F)
1996
-33.9 C (-29.0 F)
1997
-35.0 C (-31.0 F)
1998
-37.2 C (-35.0 F)
1999
-28.3 C (-18.9 F)
2000
-28.9 C (-20.0 F)
2001
-28.9 C (-20.0 F)
2002
-28.9 C (-20.0 F)
2003
-31.7 C (-25.1 F)
2004
-35.0 C (-31.0 F)
2005
-32.8 C (-27.0 F)
2006
-33.3 C (-27.9 F)
2007
-33.3 C (-27.9 F)
2008
-32.2 C (-26.0 F)
2009
-32.8 C (-27.0 F)
2010
-32.2 C (-26.0 F)
2011
-32.2 C (-26.0 F)
Wettest day (Rx1day)
The wettest day of the year at Warren, 1895 to 2011. The record is 130.0 mm (5.1 in) in 1929, marked on the chart; the median year is 28.7 mm (1.1 in).
Wettest day (Rx1day) at Warren by year
Year
Wettest day (Rx1day)
1895
40.6 mm (1.6 in)
1896
35.6 mm (1.4 in)
1897
17.8 mm (0.7 in)
1898
12.7 mm (0.5 in)
1922
30.5 mm (1.2 in)
1923
34.3 mm (1.4 in)
1924
38.1 mm (1.5 in)
1925
16.0 mm (0.6 in)
1926
23.1 mm (0.9 in)
1927
27.2 mm (1.1 in)
1928
20.3 mm (0.8 in)
1929
130.0 mm (5.1 in)
1930
n/a
1931
12.7 mm (0.5 in)
1932
17.8 mm (0.7 in)
1933
19.3 mm (0.8 in)
1934
16.0 mm (0.6 in)
1935
15.0 mm (0.6 in)
1936
27.7 mm (1.1 in)
1937
48.0 mm (1.9 in)
1938
32.0 mm (1.3 in)
1959
26.4 mm (1.0 in)
1960
25.7 mm (1.0 in)
1961
24.9 mm (1.0 in)
1962
62.2 mm (2.4 in)
1963
34.0 mm (1.3 in)
1964
34.3 mm (1.4 in)
1965
43.4 mm (1.7 in)
1966
30.5 mm (1.2 in)
1967
47.0 mm (1.9 in)
1968
31.5 mm (1.2 in)
1969
22.9 mm (0.9 in)
1970
41.4 mm (1.6 in)
1971
44.2 mm (1.7 in)
1972
47.0 mm (1.9 in)
1973
35.1 mm (1.4 in)
1974
56.1 mm (2.2 in)
1975
27.9 mm (1.1 in)
1976
24.6 mm (1.0 in)
1977
33.3 mm (1.3 in)
1978
27.4 mm (1.1 in)
1979
31.0 mm (1.2 in)
1980
54.9 mm (2.2 in)
1981
26.7 mm (1.1 in)
1982
41.9 mm (1.6 in)
1983
25.9 mm (1.0 in)
1984
24.9 mm (1.0 in)
1985
21.6 mm (0.9 in)
1986
22.6 mm (0.9 in)
1987
30.5 mm (1.2 in)
1988
18.3 mm (0.7 in)
1989
23.4 mm (0.9 in)
1990
17.3 mm (0.7 in)
1991
26.2 mm (1.0 in)
1992
21.3 mm (0.8 in)
1993
21.8 mm (0.9 in)
1994
28.7 mm (1.1 in)
1995
48.3 mm (1.9 in)
1996
38.1 mm (1.5 in)
1997
52.1 mm (2.1 in)
1998
34.5 mm (1.4 in)
1999
44.2 mm (1.7 in)
2000
36.3 mm (1.4 in)
2001
35.1 mm (1.4 in)
2002
15.7 mm (0.6 in)
2003
22.4 mm (0.9 in)
2004
20.3 mm (0.8 in)
2005
29.0 mm (1.1 in)
2006
42.9 mm (1.7 in)
2007
56.9 mm (2.2 in)
2008
17.0 mm (0.7 in)
2009
24.1 mm (0.9 in)
2010
24.1 mm (0.9 in)
2011
75.2 mm (3.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Warren, 1895 to 2011. The record is 150.3 mm (5.9 in) in 1929, marked on the chart; the median year is 47.1 mm (1.9 in).
Wettest five days (Rx5day) at Warren by year
Year
Wettest five days (Rx5day)
1895
53.3 mm (2.1 in)
1896
75.9 mm (3.0 in)
1897
35.6 mm (1.4 in)
1898
23.3 mm (0.9 in)
1922
46.5 mm (1.8 in)
1923
50.8 mm (2.0 in)
1924
77.5 mm (3.1 in)
1925
41.9 mm (1.6 in)
1926
31.0 mm (1.2 in)
1927
60.3 mm (2.4 in)
1928
43.8 mm (1.7 in)
1929
150.3 mm (5.9 in)
1930
n/a
1931
29.5 mm (1.2 in)
1932
21.1 mm (0.8 in)
1933
26.8 mm (1.1 in)
1934
20.8 mm (0.8 in)
1935
24.4 mm (1.0 in)
1936
37.9 mm (1.5 in)
1937
63.8 mm (2.5 in)
1938
34.5 mm (1.4 in)
1959
42.1 mm (1.7 in)
1960
53.6 mm (2.1 in)
1961
60.5 mm (2.4 in)
1962
129.7 mm (5.1 in)
1963
71.1 mm (2.8 in)
1964
100.3 mm (3.9 in)
1965
122.6 mm (4.8 in)
1966
63.8 mm (2.5 in)
1967
88.4 mm (3.5 in)
1968
61.0 mm (2.4 in)
1969
41.7 mm (1.6 in)
1970
86.6 mm (3.4 in)
1971
64.0 mm (2.5 in)
1972
63.1 mm (2.5 in)
1973
70.0 mm (2.8 in)
1974
127.4 mm (5.0 in)
1975
57.7 mm (2.3 in)
1976
57.5 mm (2.3 in)
1977
61.6 mm (2.4 in)
1978
64.2 mm (2.5 in)
1979
46.0 mm (1.8 in)
1980
62.2 mm (2.4 in)
1981
65.2 mm (2.6 in)
1982
62.8 mm (2.5 in)
1983
39.5 mm (1.6 in)
1984
34.3 mm (1.4 in)
1985
50.8 mm (2.0 in)
1986
39.9 mm (1.6 in)
1987
39.4 mm (1.6 in)
1988
26.9 mm (1.1 in)
1989
42.4 mm (1.7 in)
1990
23.6 mm (0.9 in)
1991
41.9 mm (1.6 in)
1992
33.8 mm (1.3 in)
1993
51.6 mm (2.0 in)
1994
35.7 mm (1.4 in)
1995
72.5 mm (2.9 in)
1996
85.6 mm (3.4 in)
1997
68.4 mm (2.7 in)
1998
47.1 mm (1.9 in)
1999
56.1 mm (2.2 in)
2000
36.8 mm (1.4 in)
2001
42.7 mm (1.7 in)
2002
29.1 mm (1.1 in)
2003
27.2 mm (1.1 in)
2004
39.4 mm (1.6 in)
2005
22.1 mm (0.9 in)
2006
47.5 mm (1.9 in)
2007
58.9 mm (2.3 in)
2008
17.6 mm (0.7 in)
2009
29.3 mm (1.2 in)
2010
35.5 mm (1.4 in)
2011
34.5 mm (1.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Warren, 1895 to 2011. The record is 72 days in 1969, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Warren by year
Year
Longest dry spell (CDD)
1895
29 days
1896
26 days
1897
22 days
1898
34 days
1922
25 days
1923
22 days
1924
29 days
1925
18 days
1926
37 days
1927
13 days
1928
20 days
1929
12 days
1930
n/a
1931
18 days
1932
20 days
1933
24 days
1934
28 days
1935
37 days
1936
30 days
1937
33 days
1938
8 days
1959
30 days
1960
35 days
1961
33 days
1962
24 days
1963
22 days
1964
15 days
1965
18 days
1966
53 days
1967
23 days
1968
24 days
1969
72 days
1970
37 days
1971
24 days
1972
21 days
1973
31 days
1974
39 days
1975
22 days
1976
20 days
1977
36 days
1978
39 days
1979
25 days
1980
22 days
1981
37 days
1982
29 days
1983
24 days
1984
30 days
1985
51 days
1986
34 days
1987
35 days
1988
26 days
1989
19 days
1990
25 days
1991
32 days
1992
25 days
1993
19 days
1994
21 days
1995
17 days
1996
31 days
1997
17 days
1998
35 days
1999
25 days
2000
18 days
2001
32 days
2002
25 days
2003
22 days
2004
19 days
2005
38 days
2006
29 days
2007
24 days
2008
19 days
2009
31 days
2010
36 days
2011
6 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
44 years with a frost
Across 44 years with a frost, the median last spring frost at Warren falls on 29 June and the median first autumn frost on 2 July, which leaves a median of 3 days between them.
Fitted over all years, the growing season changes by -2.8 days per decade at this station.
Frost dates and growing season at Warren
Measure
Median, all years
Earliest period
Recent period (1968 to 1999)
Recent against earliest
Fitted trend
Last spring frost
29 June
n/a
30 June
n/a
+1.0 days per decade
First autumn frost
2 July
n/a
1 July
n/a
-1.8 days per decade
Growing days
3 days
n/a
3 days
n/a
-2.8 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
39 years, 1895 to 2001
A day with at least 31.7 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 66.4 mm (2.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Warren: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
31.7 mm (1.2 in)
5 years
42.0 mm (1.7 in)
10 years
48.4 mm (1.9 in)
25 years
56.1 mm (2.2 in)
50 years
61.4 mm (2.4 in)
Longer than the 39 years of record
100 years
66.4 mm (2.6 in)
Longer than the 39 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, 39 years of values from 1895 to 2001.
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: 62.2 mm (2.4 in) in 1962; 56.1 mm (2.2 in) in 1974; 54.9 mm (2.2 in) in 1980.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Warren, at 1971 and 1994. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1971 ran 0.3 C (0.5 F) higher than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1994 ran 0.5 C (0.8 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Warren, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1971
+0.3
+0.5
possible
5
1994
-0.5
-0.8
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 Warren standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Warren 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.