Record envelope, standing records and threshold days for Chewelah (USC00451395), Washington, United States, with 101 years of record.
Key Facts for Chewelah
Chewelah (USC00451395) is a weather station in Washington, United States at 48.27 latitude and -117.74 longitude, 501 m (1,644 ft) above sea level.
The station reports from 1925 to 2025, 101 years of record.
1,464 records set at Chewelah still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Chewelah set a daily record precipitation of 30.5 mm (1.2 in) on 7 April 2025.
About the Station
Location: Washington, United States, 48.27 latitude, -117.74 longitude.
Elevation: 501 m (1,644 ft).
Period of record: 1925 to 2025, 101 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
2 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 Chewelah. The lines show the 2026 daily maximum and minimum. 2 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Chewelah, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
13.9 C (57.0 F)
-38.9 C (-38.0 F)
4.4 C (39.9 F)
-13.9 C (7.0 F)
Feb
16.7 C (62.1 F)
-38.9 C (-38.0 F)
7.2 C (45.0 F)
-20.0 C (-4.0 F)
Mar
25.0 C (77.0 F)
-29.4 C (-20.9 F)
22.8 C (73.0 F)
-5.6 C (21.9 F)
Apr
32.8 C (91.0 F)
-11.1 C (12.0 F)
25.0 C (77.0 F)
-4.4 C (24.1 F)
May
37.2 C (99.0 F)
-8.9 C (16.0 F)
31.1 C (88.0 F)
-0.6 C (30.9 F)
Jun
43.3 C (109.9 F)
-3.3 C (26.1 F)
30.6 C (87.1 F)
4.4 C (39.9 F)
Jul
41.7 C (107.1 F)
-0.6 C (30.9 F)
n/a
n/a
Aug
43.3 C (109.9 F)
-2.2 C (28.0 F)
n/a
n/a
Sep
40.0 C (104.0 F)
-11.1 C (12.0 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-17.2 C (1.0 F)
n/a
n/a
Nov
20.6 C (69.1 F)
-28.3 C (-18.9 F)
n/a
n/a
Dec
15.6 C (60.1 F)
-36.1 C (-33.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Chewelah still stand. 1950 holds the most, with 38.
Standing records at Chewelah by the year they were set
Year set
Standing records
1925
1
1926
23
1927
22
1928
16
1929
24
1930
15
1931
22
1932
18
1933
31
1934
29
1935
18
1936
34
1937
11
1938
7
1939
23
1940
13
1941
13
1942
7
1943
8
1944
11
1945
15
1946
13
1947
11
1948
11
1949
32
1950
38
1951
13
1952
10
1953
15
1954
18
1955
26
1956
20
1957
14
1958
20
1959
13
1960
15
1961
22
1962
21
1963
13
1964
16
1965
14
1966
12
1967
11
1968
12
1969
7
1970
7
1971
12
1972
14
1973
9
1974
16
1975
16
1976
1
1977
11
1978
9
1979
7
1980
12
1981
14
1982
12
1983
16
1984
13
1985
25
1986
17
1987
22
1988
19
1989
10
1990
16
1991
7
1992
34
1993
16
1994
10
1995
11
1996
7
1997
4
1998
7
1999
9
2000
4
2001
11
2002
24
2003
17
2004
6
2005
8
2006
15
2007
8
2008
11
2009
18
2010
11
2011
12
2012
11
2013
8
2014
13
2015
26
2016
10
2017
8
2018
16
2019
12
2020
10
2021
21
2022
11
2023
12
2024
16
2025
4
All-Time Record Progression
5 new records
5 all-time records were set at Chewelah between 5 August 1961 and 5 January 2009. Each dot is a new record.
When Chewelah set new all-time records
Date
Kind
Detail
1961-08-05
Record high maximum temperature
Record high maximum temperature 43.3 C (109.9 F)
1990-01-22
Record daily precipitation
Record daily precipitation 69.9 mm (2.8 in)
1994-07-25
Record high minimum temperature
Record high minimum temperature 21.1 C (70.0 F)
2002-07-14
Record high minimum temperature
Record high minimum temperature 22.2 C (72.0 F)
2009-01-05
Record snow depth
Record snow depth 91.4 cm (36.0 in)
Wettest Day of Each Month
Jan: 69.9 mm (2.8 in)
The wettest day on record for each calendar month at Chewelah. The most was 69.9 mm (2.8 in) on 22 January 1990.
Record daily precipitation for each month at Chewelah
Month
Record daily precipitation (mm)
Date
Jan
69.9 mm (2.8 in)
22 January 1990
Feb
38.1 mm (1.5 in)
14 February 1990
Mar
61.2 mm (2.4 in)
6 March 1939
Apr
33.0 mm (1.3 in)
8 April 1983
May
59.7 mm (2.4 in)
26 May 1998
Jun
40.6 mm (1.6 in)
12 June 1992
Jul
43.2 mm (1.7 in)
1 July 1955
Aug
48.3 mm (1.9 in)
17 August 2004
Sep
47.5 mm (1.9 in)
10 September 1927
Oct
45.5 mm (1.8 in)
14 October 2016
Nov
50.8 mm (2.0 in)
28 November 2005
Dec
63.5 mm (2.5 in)
10 December 1992
Period of Record Coverage
1925 to 2025
Complete yearUnder 90 percent of days
101 years of record at Chewelah, 1925 to 2025. 7 years have data for under 90 percent of days and are left out of rankings: 1925, 1938, 1948, 2002, 2004, 2005, 2025.
Cooler than the station meanWarmer than the station mean
One stripe for each of 85 complete years at Chewelah, 1926 to 2024. Blue stripes are years cooler than the station's own mean of 7.9 C (46.3 F); red stripes are warmer. The coolest year was 1964, at 6.3 C (43.4 F), and the warmest was 1998, at 10.2 C (50.3 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Chewelah as warming stripes, 1926 to 2024
Year
Annual mean temperature
Difference from the station mean
1926
8.0 C
+0.04 C
1927
6.6 C
-1.38 C
1928
7.3 C
-0.68 C
1930
7.1 C
-0.84 C
1931
8.1 C
+0.14 C
1932
7.1 C
-0.85 C
1933
7.1 C
-0.85 C
1934
9.3 C
+1.34 C
1935
7.0 C
-0.94 C
1936
7.2 C
-0.70 C
1937
6.9 C
-1.09 C
1939
8.0 C
+0.02 C
1940
9.3 C
+1.33 C
1941
9.2 C
+1.22 C
1942
7.9 C
-0.08 C
1943
7.4 C
-0.58 C
1944
8.1 C
+0.15 C
1945
8.2 C
+0.25 C
1946
7.7 C
-0.21 C
1949
6.5 C
-1.47 C
1950
6.6 C
-1.30 C
1951
7.2 C
-0.72 C
1952
7.9 C
-0.03 C
1953
9.1 C
+1.13 C
1954
7.6 C
-0.31 C
1955
6.4 C
-1.56 C
1956
7.4 C
-0.54 C
1957
7.3 C
-0.62 C
1958
9.5 C
+1.54 C
1959
7.1 C
-0.84 C
1960
7.5 C
-0.47 C
1961
8.2 C
+0.23 C
1962
7.4 C
-0.53 C
1963
8.0 C
+0.06 C
1964
6.3 C
-1.63 C
1965
7.4 C
-0.56 C
1966
7.9 C
-0.07 C
1967
8.5 C
+0.51 C
1969
7.0 C
-0.96 C
1970
7.3 C
-0.68 C
1971
7.1 C
-0.83 C
1972
7.2 C
-0.77 C
1973
8.0 C
+0.06 C
1974
8.1 C
+0.14 C
1976
7.3 C
-0.64 C
1978
6.9 C
-1.06 C
1979
7.6 C
-0.31 C
1980
8.4 C
+0.41 C
1981
8.9 C
+0.98 C
1982
8.0 C
+0.03 C
1983
8.4 C
+0.49 C
1984
7.4 C
-0.54 C
1985
6.4 C
-1.56 C
1986
8.8 C
+0.86 C
1988
8.8 C
+0.82 C
1989
8.5 C
+0.52 C
1990
9.0 C
+1.02 C
1991
8.6 C
+0.69 C
1992
9.8 C
+1.89 C
1993
7.5 C
-0.48 C
1994
9.5 C
+1.54 C
1995
9.1 C
+1.12 C
1996
7.7 C
-0.27 C
1997
8.7 C
+0.80 C
1998
10.2 C
+2.21 C
1999
9.1 C
+1.15 C
2001
8.7 C
+0.80 C
2003
9.7 C
+1.73 C
2006
8.5 C
+0.59 C
2007
8.0 C
+0.02 C
2008
6.5 C
-1.40 C
2009
6.8 C
-1.10 C
2010
8.0 C
+0.09 C
2011
7.0 C
-0.99 C
2012
8.5 C
+0.56 C
2013
8.1 C
+0.13 C
2014
8.4 C
+0.44 C
2015
9.4 C
+1.49 C
2016
8.9 C
+0.97 C
2018
8.3 C
+0.35 C
2019
7.2 C
-0.70 C
2020
8.4 C
+0.50 C
2021
8.8 C
+0.83 C
2022
7.2 C
-0.76 C
2024
8.6 C
+0.69 C
The annual mean temperature here has risen by 0.10 C (0.04 to 0.17) per decade over 1926 to 2024. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 85 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Chewelah
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.10 C (0.04 to 0.17) per decade
0.2 F (0.1 to 0.3) per decade
1926 to 2024
85
Rise
Mean daily maximum
0.05 C (-0.03 to 0.12) per decade
0.09 F (-0.05 to 0.22) per decade
1926 to 2024
85
Not clearly different from zero
Mean daily minimum
0.2 C (0.1 to 0.2) per decade
0.3 F (0.2 to 0.4) per decade
1926 to 2024
85
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
1925 to 2025
Yearly extremes at Chewelah: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
1961
38.3 C (100.9 F)
101
Coldest night (TNn)
-38.9 C (-38.0 F)
1933
-25.6 C (-14.1 F)
101
Wettest day (Rx1day)
69.9 mm (2.8 in)
1990
28.7 mm (1.1 in)
101
Wettest five days (Rx5day)
109.5 mm (4.3 in)
1927
48.8 mm (1.9 in)
101
Longest dry spell (CDD)
95 days
1929
30 days
101
Hottest day (TXx)
The hottest day of the year at Chewelah, 1925 to 2025. The record is 43.3 C (109.9 F) in 1961, marked on the chart; the median year is 38.3 C (100.9 F).
Hottest day (TXx) at Chewelah by year
Year
Hottest day (TXx)
1925
10.6 C (51.1 F)
1926
38.3 C (100.9 F)
1927
37.2 C (99.0 F)
1928
39.4 C (102.9 F)
1929
38.3 C (100.9 F)
1930
40.6 C (105.1 F)
1931
40.0 C (104.0 F)
1932
38.3 C (100.9 F)
1933
38.3 C (100.9 F)
1934
41.7 C (107.1 F)
1935
37.8 C (100.0 F)
1936
39.4 C (102.9 F)
1937
37.2 C (99.0 F)
1938
40.0 C (104.0 F)
1939
41.7 C (107.1 F)
1940
41.7 C (107.1 F)
1941
41.7 C (107.1 F)
1942
38.9 C (102.0 F)
1943
37.2 C (99.0 F)
1944
38.9 C (102.0 F)
1945
37.2 C (99.0 F)
1946
38.3 C (100.9 F)
1947
38.3 C (100.9 F)
1948
33.9 C (93.0 F)
1949
38.9 C (102.0 F)
1950
37.8 C (100.0 F)
1951
38.3 C (100.9 F)
1952
38.3 C (100.9 F)
1953
37.8 C (100.0 F)
1954
35.0 C (95.0 F)
1955
36.7 C (98.1 F)
1956
38.3 C (100.9 F)
1957
35.0 C (95.0 F)
1958
39.4 C (102.9 F)
1959
40.0 C (104.0 F)
1960
40.0 C (104.0 F)
1961
43.3 C (109.9 F)
1962
37.2 C (99.0 F)
1963
37.2 C (99.0 F)
1964
37.8 C (100.0 F)
1965
37.8 C (100.0 F)
1966
38.3 C (100.9 F)
1967
40.0 C (104.0 F)
1968
37.8 C (100.0 F)
1969
36.7 C (98.1 F)
1970
37.8 C (100.0 F)
1971
38.3 C (100.9 F)
1972
38.3 C (100.9 F)
1973
37.2 C (99.0 F)
1974
35.6 C (96.1 F)
1975
38.3 C (100.9 F)
1976
34.4 C (93.9 F)
1977
37.8 C (100.0 F)
1978
37.2 C (99.0 F)
1979
39.4 C (102.9 F)
1980
37.8 C (100.0 F)
1981
40.0 C (104.0 F)
1982
38.9 C (102.0 F)
1983
37.8 C (100.0 F)
1984
37.8 C (100.0 F)
1985
38.3 C (100.9 F)
1986
40.6 C (105.1 F)
1987
38.3 C (100.9 F)
1988
40.0 C (104.0 F)
1989
37.8 C (100.0 F)
1990
40.0 C (104.0 F)
1991
38.3 C (100.9 F)
1992
41.1 C (106.0 F)
1993
36.7 C (98.1 F)
1994
40.6 C (105.1 F)
1995
39.4 C (102.9 F)
1996
37.8 C (100.0 F)
1997
38.9 C (102.0 F)
1998
39.4 C (102.9 F)
1999
37.8 C (100.0 F)
2000
38.3 C (100.9 F)
2001
38.9 C (102.0 F)
2002
40.0 C (104.0 F)
2003
40.0 C (104.0 F)
2004
38.3 C (100.9 F)
2005
37.8 C (100.0 F)
2006
41.7 C (107.1 F)
2007
40.6 C (105.1 F)
2008
39.4 C (102.9 F)
2009
38.9 C (102.0 F)
2010
35.0 C (95.0 F)
2011
36.7 C (98.1 F)
2012
37.2 C (99.0 F)
2013
36.7 C (98.1 F)
2014
41.1 C (106.0 F)
2015
41.7 C (107.1 F)
2016
37.2 C (99.0 F)
2017
38.3 C (100.9 F)
2018
40.0 C (104.0 F)
2019
37.8 C (100.0 F)
2020
39.4 C (102.9 F)
2021
43.3 C (109.9 F)
2022
39.4 C (102.9 F)
2023
39.4 C (102.9 F)
2024
40.6 C (105.1 F)
2025
31.1 C (88.0 F)
Coldest night (TNn)
The coldest night of the year at Chewelah, 1925 to 2025. The record is -38.9 C (-38.0 F) in 1933, marked on the chart; the median year is -25.6 C (-14.1 F).
Coldest night (TNn) at Chewelah by year
Year
Coldest night (TNn)
1925
-11.7 C (10.9 F)
1926
-20.0 C (-4.0 F)
1927
-36.1 C (-33.0 F)
1928
-19.4 C (-2.9 F)
1929
-35.0 C (-31.0 F)
1930
-26.7 C (-16.1 F)
1931
-24.4 C (-11.9 F)
1932
-30.6 C (-23.1 F)
1933
-38.9 C (-38.0 F)
1934
-17.2 C (1.0 F)
1935
-37.2 C (-35.0 F)
1936
-33.3 C (-27.9 F)
1937
-36.1 C (-33.0 F)
1938
-17.8 C (0.0 F)
1939
-28.9 C (-20.0 F)
1940
-16.7 C (1.9 F)
1941
-14.4 C (6.1 F)
1942
-21.1 C (-6.0 F)
1943
-27.2 C (-17.0 F)
1944
-20.6 C (-5.1 F)
1945
-18.9 C (-2.0 F)
1946
-20.6 C (-5.1 F)
1947
-25.6 C (-14.1 F)
1948
-32.8 C (-27.0 F)
1949
-35.6 C (-32.1 F)
1950
-38.9 C (-38.0 F)
1951
-32.8 C (-27.0 F)
1952
-34.4 C (-29.9 F)
1953
-11.1 C (12.0 F)
1954
-31.7 C (-25.1 F)
1955
-27.8 C (-18.0 F)
1956
-30.6 C (-23.1 F)
1957
-37.8 C (-36.0 F)
1958
-23.9 C (-11.0 F)
1959
-22.2 C (-8.0 F)
1960
-29.4 C (-20.9 F)
1961
-27.2 C (-17.0 F)
1962
-35.0 C (-31.0 F)
1963
-25.6 C (-14.1 F)
1964
-28.3 C (-18.9 F)
1965
-20.0 C (-4.0 F)
1966
-21.1 C (-6.0 F)
1967
-20.6 C (-5.1 F)
1968
-32.8 C (-27.0 F)
1969
-33.3 C (-27.9 F)
1970
-23.9 C (-11.0 F)
1971
-26.7 C (-16.1 F)
1972
-28.9 C (-20.0 F)
1973
-20.0 C (-4.0 F)
1974
-27.2 C (-17.0 F)
1975
-25.6 C (-14.1 F)
1976
-19.4 C (-2.9 F)
1977
-22.2 C (-8.0 F)
1978
-33.9 C (-29.0 F)
1979
-33.3 C (-27.9 F)
1980
-27.8 C (-18.0 F)
1981
-16.7 C (1.9 F)
1982
-28.3 C (-18.9 F)
1983
-28.9 C (-20.0 F)
1984
-25.6 C (-14.1 F)
1985
-28.3 C (-18.9 F)
1986
-19.4 C (-2.9 F)
1987
-20.6 C (-5.1 F)
1988
-21.7 C (-7.1 F)
1989
-21.1 C (-6.0 F)
1990
-30.6 C (-23.1 F)
1991
-21.7 C (-7.1 F)
1992
-18.3 C (-0.9 F)
1993
-31.7 C (-25.1 F)
1994
-20.0 C (-4.0 F)
1995
-16.7 C (1.9 F)
1996
-30.0 C (-22.0 F)
1997
-19.4 C (-2.9 F)
1998
-20.6 C (-5.1 F)
1999
-11.1 C (12.0 F)
2000
-18.3 C (-0.9 F)
2001
-16.1 C (3.0 F)
2002
-15.0 C (5.0 F)
2003
-15.0 C (5.0 F)
2004
-28.3 C (-18.9 F)
2005
-27.8 C (-18.0 F)
2006
-21.7 C (-7.1 F)
2007
-20.0 C (-4.0 F)
2008
-30.0 C (-22.0 F)
2009
-31.7 C (-25.1 F)
2010
-21.1 C (-6.0 F)
2011
-22.8 C (-9.0 F)
2012
-16.7 C (1.9 F)
2013
-21.1 C (-6.0 F)
2014
-30.0 C (-22.0 F)
2015
-18.9 C (-2.0 F)
2016
-26.1 C (-15.0 F)
2017
-30.6 C (-23.1 F)
2018
-24.4 C (-11.9 F)
2019
-29.4 C (-20.9 F)
2020
-17.2 C (1.0 F)
2021
-20.6 C (-5.1 F)
2022
-32.8 C (-27.0 F)
2023
-18.9 C (-2.0 F)
2024
-28.9 C (-20.0 F)
2025
-20.0 C (-4.0 F)
Wettest day (Rx1day)
The wettest day of the year at Chewelah, 1925 to 2025. The record is 69.9 mm (2.8 in) in 1990, marked on the chart; the median year is 28.7 mm (1.1 in).
Wettest day (Rx1day) at Chewelah by year
Year
Wettest day (Rx1day)
1925
14.0 mm (0.6 in)
1926
33.8 mm (1.3 in)
1927
47.5 mm (1.9 in)
1928
24.1 mm (0.9 in)
1929
24.1 mm (0.9 in)
1930
16.0 mm (0.6 in)
1931
26.7 mm (1.1 in)
1932
29.2 mm (1.1 in)
1933
21.6 mm (0.9 in)
1934
35.6 mm (1.4 in)
1935
20.6 mm (0.8 in)
1936
30.2 mm (1.2 in)
1937
22.9 mm (0.9 in)
1938
38.9 mm (1.5 in)
1939
61.2 mm (2.4 in)
1940
26.9 mm (1.1 in)
1941
35.1 mm (1.4 in)
1942
21.8 mm (0.9 in)
1943
26.4 mm (1.0 in)
1944
18.5 mm (0.7 in)
1945
36.6 mm (1.4 in)
1946
28.7 mm (1.1 in)
1947
27.9 mm (1.1 in)
1948
24.9 mm (1.0 in)
1949
23.4 mm (0.9 in)
1950
18.8 mm (0.7 in)
1951
31.2 mm (1.2 in)
1952
18.8 mm (0.7 in)
1953
24.9 mm (1.0 in)
1954
24.9 mm (1.0 in)
1955
43.2 mm (1.7 in)
1956
22.1 mm (0.9 in)
1957
32.8 mm (1.3 in)
1958
31.5 mm (1.2 in)
1959
29.2 mm (1.1 in)
1960
31.8 mm (1.3 in)
1961
21.6 mm (0.9 in)
1962
21.8 mm (0.9 in)
1963
24.9 mm (1.0 in)
1964
20.3 mm (0.8 in)
1965
33.0 mm (1.3 in)
1966
27.2 mm (1.1 in)
1967
22.9 mm (0.9 in)
1968
25.1 mm (1.0 in)
1969
29.2 mm (1.1 in)
1970
21.1 mm (0.8 in)
1971
24.1 mm (0.9 in)
1972
22.6 mm (0.9 in)
1973
49.8 mm (2.0 in)
1974
38.1 mm (1.5 in)
1975
28.2 mm (1.1 in)
1976
24.4 mm (1.0 in)
1977
24.6 mm (1.0 in)
1978
33.0 mm (1.3 in)
1979
45.7 mm (1.8 in)
1980
40.6 mm (1.6 in)
1981
24.1 mm (0.9 in)
1982
19.8 mm (0.8 in)
1983
33.0 mm (1.3 in)
1984
46.2 mm (1.8 in)
1985
14.2 mm (0.6 in)
1986
25.9 mm (1.0 in)
1987
26.4 mm (1.0 in)
1988
29.7 mm (1.2 in)
1989
22.9 mm (0.9 in)
1990
69.9 mm (2.8 in)
1991
25.4 mm (1.0 in)
1992
63.5 mm (2.5 in)
1993
30.5 mm (1.2 in)
1994
17.5 mm (0.7 in)
1995
24.6 mm (1.0 in)
1996
27.9 mm (1.1 in)
1997
45.7 mm (1.8 in)
1998
59.7 mm (2.4 in)
1999
29.2 mm (1.1 in)
2000
31.0 mm (1.2 in)
2001
49.0 mm (1.9 in)
2002
49.5 mm (1.9 in)
2003
35.6 mm (1.4 in)
2004
48.3 mm (1.9 in)
2005
50.8 mm (2.0 in)
2006
36.8 mm (1.4 in)
2007
51.3 mm (2.0 in)
2008
28.2 mm (1.1 in)
2009
17.3 mm (0.7 in)
2010
22.9 mm (0.9 in)
2011
28.7 mm (1.1 in)
2012
39.9 mm (1.6 in)
2013
47.5 mm (1.9 in)
2014
24.6 mm (1.0 in)
2015
29.2 mm (1.1 in)
2016
45.5 mm (1.8 in)
2017
37.6 mm (1.5 in)
2018
23.1 mm (0.9 in)
2019
32.5 mm (1.3 in)
2020
29.2 mm (1.1 in)
2021
31.2 mm (1.2 in)
2022
57.2 mm (2.3 in)
2023
21.3 mm (0.8 in)
2024
23.6 mm (0.9 in)
2025
33.0 mm (1.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Chewelah, 1925 to 2025. The record is 109.5 mm (4.3 in) in 1927, marked on the chart; the median year is 48.8 mm (1.9 in).
Wettest five days (Rx5day) at Chewelah by year
Year
Wettest five days (Rx5day)
1925
29.2 mm (1.1 in)
1926
59.2 mm (2.3 in)
1927
109.5 mm (4.3 in)
1928
28.0 mm (1.1 in)
1929
43.9 mm (1.7 in)
1930
36.8 mm (1.4 in)
1931
50.6 mm (2.0 in)
1932
60.0 mm (2.4 in)
1933
59.4 mm (2.3 in)
1934
54.3 mm (2.1 in)
1935
32.5 mm (1.3 in)
1936
36.5 mm (1.4 in)
1937
62.6 mm (2.5 in)
1938
51.0 mm (2.0 in)
1939
51.8 mm (2.0 in)
1940
40.4 mm (1.6 in)
1941
54.6 mm (2.1 in)
1942
48.7 mm (1.9 in)
1943
51.3 mm (2.0 in)
1944
38.7 mm (1.5 in)
1945
51.9 mm (2.0 in)
1946
38.9 mm (1.5 in)
1947
59.9 mm (2.4 in)
1948
39.7 mm (1.6 in)
1949
34.3 mm (1.4 in)
1950
43.1 mm (1.7 in)
1951
59.1 mm (2.3 in)
1952
51.0 mm (2.0 in)
1953
42.4 mm (1.7 in)
1954
40.1 mm (1.6 in)
1955
82.5 mm (3.2 in)
1956
37.3 mm (1.5 in)
1957
72.6 mm (2.9 in)
1958
48.2 mm (1.9 in)
1959
77.2 mm (3.0 in)
1960
71.1 mm (2.8 in)
1961
65.3 mm (2.6 in)
1962
51.1 mm (2.0 in)
1963
42.7 mm (1.7 in)
1964
44.4 mm (1.7 in)
1965
55.4 mm (2.2 in)
1966
64.2 mm (2.5 in)
1967
44.7 mm (1.8 in)
1968
59.7 mm (2.4 in)
1969
57.2 mm (2.3 in)
1970
45.5 mm (1.8 in)
1971
48.1 mm (1.9 in)
1972
47.8 mm (1.9 in)
1973
100.6 mm (4.0 in)
1974
70.5 mm (2.8 in)
1975
45.4 mm (1.8 in)
1976
40.4 mm (1.6 in)
1977
44.1 mm (1.7 in)
1978
47.0 mm (1.9 in)
1979
47.5 mm (1.9 in)
1980
48.1 mm (1.9 in)
1981
43.9 mm (1.7 in)
1982
57.4 mm (2.3 in)
1983
46.5 mm (1.8 in)
1984
78.2 mm (3.1 in)
1985
28.1 mm (1.1 in)
1986
36.1 mm (1.4 in)
1987
59.5 mm (2.3 in)
1988
48.8 mm (1.9 in)
1989
36.8 mm (1.4 in)
1990
71.9 mm (2.8 in)
1991
41.2 mm (1.6 in)
1992
73.2 mm (2.9 in)
1993
42.5 mm (1.7 in)
1994
61.2 mm (2.4 in)
1995
62.9 mm (2.5 in)
1996
56.7 mm (2.2 in)
1997
58.4 mm (2.3 in)
1998
84.1 mm (3.3 in)
1999
51.3 mm (2.0 in)
2000
50.1 mm (2.0 in)
2001
55.1 mm (2.2 in)
2002
82.0 mm (3.2 in)
2003
28.7 mm (1.1 in)
2004
53.1 mm (2.1 in)
2005
36.1 mm (1.4 in)
2006
68.9 mm (2.7 in)
2007
53.1 mm (2.1 in)
2008
41.2 mm (1.6 in)
2009
54.2 mm (2.1 in)
2010
69.6 mm (2.7 in)
2011
33.1 mm (1.3 in)
2012
67.8 mm (2.7 in)
2013
48.8 mm (1.9 in)
2014
29.0 mm (1.1 in)
2015
57.2 mm (2.3 in)
2016
44.8 mm (1.8 in)
2017
40.6 mm (1.6 in)
2018
45.0 mm (1.8 in)
2019
32.5 mm (1.3 in)
2020
42.4 mm (1.7 in)
2021
50.0 mm (2.0 in)
2022
43.0 mm (1.7 in)
2023
56.4 mm (2.2 in)
2024
40.7 mm (1.6 in)
2025
33.0 mm (1.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Chewelah, 1925 to 2025. The record is 95 days in 1929, marked on the chart; the median year is 30 days.
Longest dry spell (CDD) at Chewelah by year
Year
Longest dry spell (CDD)
1925
28 days
1926
46 days
1927
44 days
1928
60 days
1929
95 days
1930
28 days
1931
55 days
1932
35 days
1933
26 days
1934
36 days
1935
28 days
1936
59 days
1937
40 days
1938
51 days
1939
41 days
1940
47 days
1941
26 days
1942
26 days
1943
37 days
1944
48 days
1945
54 days
1946
34 days
1947
19 days
1948
29 days
1949
23 days
1950
33 days
1951
48 days
1952
44 days
1953
27 days
1954
28 days
1955
46 days
1956
30 days
1957
23 days
1958
28 days
1959
39 days
1960
42 days
1961
26 days
1962
39 days
1963
27 days
1964
20 days
1965
28 days
1966
28 days
1967
58 days
1968
25 days
1969
71 days
1970
31 days
1971
24 days
1972
30 days
1973
60 days
1974
50 days
1975
16 days
1976
22 days
1977
28 days
1978
35 days
1979
44 days
1980
33 days
1981
27 days
1982
20 days
1983
28 days
1984
34 days
1985
53 days
1986
49 days
1987
31 days
1988
45 days
1989
41 days
1990
42 days
1991
45 days
1992
26 days
1993
19 days
1994
34 days
1995
17 days
1996
17 days
1997
22 days
1998
39 days
1999
19 days
2000
45 days
2001
31 days
2002
47 days
2003
36 days
2004
21 days
2005
33 days
2006
40 days
2007
31 days
2008
26 days
2009
23 days
2010
24 days
2011
11 days
2012
12 days
2013
7 days
2014
10 days
2015
29 days
2016
8 days
2017
22 days
2018
7 days
2019
15 days
2020
19 days
2021
8 days
2022
6 days
2023
34 days
2024
16 days
2025
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
85 years with a frost
Across 85 years with a frost, the median last spring frost at Chewelah falls on 22 May and the median first autumn frost on 7 September, which leaves a median of 110 days between them.
In 1989 to 2024 the median growing season was 122 days. That is 44 days more than in 1926 to 1959.
Fitted over all years, the growing season changes by +6.8 days per decade at this station.
Frost dates and growing season at Chewelah
Measure
Median, all years
Earliest period (1926 to 1959)
Recent period (1989 to 2024)
Recent against earliest
Fitted trend
Last spring frost
22 May
2 June
15 May
18 days earlier
-2.8 days per decade
First autumn frost
7 September
20 August
19 September
30 days later
+4.0 days per decade
Growing days
110 days
78 days
122 days
44 days more
+6.8 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
70 years, 1926 to 2010
A day with at least 27.0 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 69.7 mm (2.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Chewelah: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
27.0 mm (1.1 in)
5 years
35.4 mm (1.4 in)
10 years
42.0 mm (1.7 in)
25 years
51.8 mm (2.0 in)
50 years
60.2 mm (2.4 in)
100 years
69.7 mm (2.7 in)
Longer than the 70 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, 70 years of values from 1926 to 2010.
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: 69.9 mm (2.8 in) in 1990; 59.7 mm (2.4 in) in 1998; 51.3 mm (2.0 in) in 2007.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Chewelah standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Chewelah 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.