Record envelope, standing records and threshold days for Omak 4 N (USC00456123), Washington, United States, with 106 years of record.
Key Facts for Omak 4 N
Omak 4 N (USC00456123) is a weather station in Washington, United States at 48.46 latitude and -119.52 longitude, 395 m (1,296 ft) above sea level.
The station reports from 1909 to 2014, 106 years of record.
1,464 records set at Omak 4 N still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Omak 4 N set a daily record precipitation of 12.2 mm (0.5 in) on 15 February 2014.
About the Station
Location: Washington, United States, 48.46 latitude, -119.52 longitude.
Elevation: 395 m (1,296 ft).
Period of record: 1909 to 2014, 106 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 Omak 4 N. 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 Omak 4 N, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
15.6 C (60.1 F)
-30.0 C (-22.0 F)
n/a
n/a
Feb
17.2 C (63.0 F)
-32.2 C (-26.0 F)
n/a
n/a
Mar
26.1 C (79.0 F)
-21.7 C (-7.1 F)
n/a
n/a
Apr
35.6 C (96.1 F)
-9.4 C (15.1 F)
n/a
n/a
May
38.3 C (100.9 F)
-7.2 C (19.0 F)
n/a
n/a
Jun
41.7 C (107.1 F)
-1.1 C (30.0 F)
n/a
n/a
Jul
45.6 C (114.1 F)
1.7 C (35.1 F)
n/a
n/a
Aug
41.7 C (107.1 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
38.9 C (102.0 F)
-6.7 C (19.9 F)
n/a
n/a
Oct
32.2 C (90.0 F)
-13.3 C (8.1 F)
n/a
n/a
Nov
25.0 C (77.0 F)
-19.4 C (-2.9 F)
n/a
n/a
Dec
19.4 C (66.9 F)
-29.4 C (-20.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Omak 4 N still stand. 1926 holds the most, with 43.
Standing records at Omak 4 N by the year they were set
Year set
Standing records
1909
5
1910
36
1911
16
1912
15
1913
24
1914
14
1915
11
1916
15
1917
32
1918
25
1919
34
1920
23
1921
8
1922
15
1923
14
1924
41
1925
26
1926
43
1927
13
1928
23
1929
18
1930
14
1931
8
1932
19
1933
13
1934
42
1935
19
1936
34
1937
13
1938
12
1939
19
1940
21
1941
8
1942
8
1943
15
1944
8
1945
25
1946
6
1947
16
1948
33
1949
28
1950
34
1951
15
1952
5
1953
27
1954
15
1955
34
1956
19
1957
11
1958
20
1959
12
1960
12
1961
13
1962
17
1963
8
1964
22
1965
14
1966
9
1967
7
1968
23
1969
18
1970
11
1971
19
1972
14
1973
12
1974
15
1975
11
1976
9
1977
13
1978
5
1979
13
1980
4
1992
22
1993
13
1994
12
1995
3
1996
10
1997
1
1998
15
1999
8
2000
2
2001
5
2002
12
2003
13
2004
8
2005
7
2006
16
2007
9
2008
11
2009
10
2010
11
2011
3
All-Time Record Progression
7 new records
7 all-time records were set at Omak 4 N between 23 December 1948 and 22 July 2006. Each dot is a new record.
When Omak 4 N set new all-time records
Date
Kind
Detail
1948-12-23
Record low maximum temperature
Record low maximum temperature -18.3 C (-0.9 F)
1950-01-13
Record low maximum temperature
Record low maximum temperature -18.9 C (-2.0 F)
1950-02-01
Record low minimum temperature
Record low minimum temperature -32.2 C (-26.0 F)
1964-12-16
Record low maximum temperature
Record low maximum temperature -21.1 C (-6.0 F)
1968-12-29
Record low maximum temperature
Record low maximum temperature -23.9 C (-11.0 F)
1994-07-24
Record high minimum temperature
Record high minimum temperature 25.6 C (78.1 F)
2006-07-22
Record high minimum temperature
Record high minimum temperature 26.1 C (79.0 F)
Wettest Day of Each Month
Jun: 56.1 mm (2.2 in)
The wettest day on record for each calendar month at Omak 4 N. The most was 56.1 mm (2.2 in) on 2 June 1936.
Record daily precipitation for each month at Omak 4 N
Month
Record daily precipitation (mm)
Date
Jan
49.8 mm (2.0 in)
25 January 1912
Feb
27.7 mm (1.1 in)
10 February 1943
Mar
21.6 mm (0.9 in)
27 March 2011
Apr
31.8 mm (1.3 in)
27 April 1953
May
44.5 mm (1.8 in)
27 May 1998
Jun
56.1 mm (2.2 in)
2 June 1936
Jul
51.8 mm (2.0 in)
23 July 1992
Aug
29.2 mm (1.1 in)
28 August 1951
Sep
36.3 mm (1.4 in)
13 September 1980
Oct
27.4 mm (1.1 in)
4 October 1922
Nov
27.2 mm (1.1 in)
4 November 1918
Dec
29.5 mm (1.2 in)
22 December 2012
Period of Record Coverage
1909 to 2011
Complete yearUnder 90 percent of days
93 years of record at Omak 4 N, 1909 to 2011. 23 years have data for under 90 percent of days and are left out of rankings: 1909, 1910, 1911, 1979, 1980, 1991, 1992, 1993 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 65 complete years at Omak 4 N, 1912 to 2008. Blue stripes are years cooler than the station's own mean of 9.2 C (48.5 F); red stripes are warmer. The coolest year was 1955, at 7.1 C (44.8 F), and the warmest was 1934, at 11.8 C (53.3 F). The strongest colour marks a difference of 2.7 C (4.9 F).
Annual mean temperature at Omak 4 N as warming stripes, 1912 to 2008
Year
Annual mean temperature
Difference from the station mean
1912
9.3 C
+0.13 C
1913
8.7 C
-0.47 C
1914
9.5 C
+0.29 C
1915
9.5 C
+0.28 C
1916
7.7 C
-1.50 C
1917
9.0 C
-0.19 C
1918
10.5 C
+1.30 C
1919
9.2 C
+0.01 C
1920
10.2 C
+1.01 C
1921
9.5 C
+0.35 C
1922
9.0 C
-0.19 C
1923
10.0 C
+0.84 C
1924
10.1 C
+0.94 C
1925
11.2 C
+2.04 C
1926
11.5 C
+2.35 C
1927
9.5 C
+0.31 C
1928
10.1 C
+0.96 C
1929
7.8 C
-1.35 C
1930
9.3 C
+0.12 C
1931
10.3 C
+1.07 C
1932
9.3 C
+0.10 C
1933
9.4 C
+0.17 C
1934
11.8 C
+2.64 C
1935
9.7 C
+0.49 C
1936
9.4 C
+0.21 C
1937
8.7 C
-0.50 C
1938
10.3 C
+1.11 C
1939
10.8 C
+1.64 C
1941
11.0 C
+1.78 C
1942
10.2 C
+1.05 C
1943
9.5 C
+0.28 C
1944
10.6 C
+1.40 C
1945
9.6 C
+0.41 C
1946
8.5 C
-0.71 C
1947
9.0 C
-0.19 C
1949
7.5 C
-1.70 C
1951
7.9 C
-1.28 C
1952
8.6 C
-0.59 C
1954
8.5 C
-0.72 C
1955
7.1 C
-2.08 C
1956
8.0 C
-1.14 C
1957
8.5 C
-0.69 C
1958
10.2 C
+1.06 C
1959
7.9 C
-1.33 C
1960
8.5 C
-0.69 C
1961
9.3 C
+0.12 C
1962
9.1 C
-0.12 C
1963
9.3 C
+0.09 C
1964
7.9 C
-1.29 C
1965
9.1 C
-0.13 C
1966
9.0 C
-0.14 C
1967
9.8 C
+0.65 C
1968
8.8 C
-0.39 C
1969
7.7 C
-1.52 C
1970
8.0 C
-1.22 C
1971
7.5 C
-1.71 C
1972
7.8 C
-1.41 C
1973
8.5 C
-0.64 C
1974
9.0 C
-0.15 C
1975
7.6 C
-1.58 C
1977
8.9 C
-0.33 C
1978
8.2 C
-0.99 C
2004
11.0 C
+1.79 C
2007
9.6 C
+0.44 C
2008
8.8 C
-0.41 C
The annual mean temperature here has fallen by 0.14 C (0.03 to 0.25) per decade over 1912 to 2008. In Fahrenheit: 0.3 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 65 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Omak 4 N
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.14 C (-0.25 to -0.03) per decade
-0.3 F (-0.4 to -0.1) per decade
1912 to 2008
65
Fall
Mean daily maximum
-0.3 C (-0.4 to -0.2) per decade
-0.6 F (-0.8 to -0.3) per decade
1912 to 2008
65
Fall
Mean daily minimum
0.04 C (-0.07 to 0.14) per decade
0.1 F (-0.1 to 0.3) per decade
1912 to 2008
65
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
1909 to 2014
Yearly extremes at Omak 4 N: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
45.6 C (114.1 F)
1928
38.9 C (102.0 F)
93
Coldest night (TNn)
-32.2 C (-26.0 F)
1950
-21.1 C (-6.0 F)
93
Wettest day (Rx1day)
56.1 mm (2.2 in)
1936
21.5 mm (0.8 in)
96
Wettest five days (Rx5day)
103.3 mm (4.1 in)
1992
36.3 mm (1.4 in)
96
Longest dry spell (CDD)
135 days
1932
44 days
96
Hottest day (TXx)
The hottest day of the year at Omak 4 N, 1909 to 2014. The record is 45.6 C (114.1 F) in 1928, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Omak 4 N by year
Year
Hottest day (TXx)
1909
35.6 C (96.1 F)
1910
40.6 C (105.1 F)
1911
41.7 C (107.1 F)
1912
39.4 C (102.9 F)
1913
40.6 C (105.1 F)
1914
40.6 C (105.1 F)
1915
39.4 C (102.9 F)
1916
40.0 C (104.0 F)
1917
41.7 C (107.1 F)
1918
42.8 C (109.0 F)
1919
42.8 C (109.0 F)
1920
42.2 C (108.0 F)
1921
39.4 C (102.9 F)
1922
42.2 C (108.0 F)
1923
42.2 C (108.0 F)
1924
44.4 C (111.9 F)
1925
41.1 C (106.0 F)
1926
43.9 C (111.0 F)
1927
43.3 C (109.9 F)
1928
45.6 C (114.1 F)
1929
40.6 C (105.1 F)
1930
39.4 C (102.9 F)
1931
40.0 C (104.0 F)
1932
38.3 C (100.9 F)
1933
39.4 C (102.9 F)
1934
42.2 C (108.0 F)
1935
39.4 C (102.9 F)
1936
38.9 C (102.0 F)
1937
38.9 C (102.0 F)
1938
40.6 C (105.1 F)
1939
42.8 C (109.0 F)
1940
38.9 C (102.0 F)
1941
41.1 C (106.0 F)
1942
39.4 C (102.9 F)
1943
37.8 C (100.0 F)
1944
38.9 C (102.0 F)
1945
37.8 C (100.0 F)
1946
36.7 C (98.1 F)
1947
36.1 C (97.0 F)
1948
32.8 C (91.0 F)
1949
37.8 C (100.0 F)
1950
35.6 C (96.1 F)
1951
36.1 C (97.0 F)
1952
36.1 C (97.0 F)
1953
37.2 C (99.0 F)
1954
35.0 C (95.0 F)
1955
37.8 C (100.0 F)
1956
37.8 C (100.0 F)
1957
34.4 C (93.9 F)
1958
37.8 C (100.0 F)
1959
37.8 C (100.0 F)
1960
38.9 C (102.0 F)
1961
38.9 C (102.0 F)
1962
37.8 C (100.0 F)
1963
35.6 C (96.1 F)
1964
36.1 C (97.0 F)
1965
37.2 C (99.0 F)
1966
36.1 C (97.0 F)
1967
38.3 C (100.9 F)
1968
37.2 C (99.0 F)
1969
35.0 C (95.0 F)
1970
36.7 C (98.1 F)
1971
37.8 C (100.0 F)
1972
36.7 C (98.1 F)
1973
36.1 C (97.0 F)
1974
35.0 C (95.0 F)
1975
36.7 C (98.1 F)
1976
33.9 C (93.0 F)
1977
38.3 C (100.9 F)
1978
36.7 C (98.1 F)
1979
38.9 C (102.0 F)
1980
39.4 C (102.9 F)
1991
11.7 C (53.1 F)
1992
38.9 C (102.0 F)
1993
35.0 C (95.0 F)
1994
41.1 C (106.0 F)
1995
36.7 C (98.1 F)
1996
38.9 C (102.0 F)
1997
37.8 C (100.0 F)
1998
41.1 C (106.0 F)
1999
38.3 C (100.9 F)
2000
40.0 C (104.0 F)
2001
38.3 C (100.9 F)
2002
40.6 C (105.1 F)
2003
40.0 C (104.0 F)
2004
40.0 C (104.0 F)
2005
33.3 C (91.9 F)
2006
41.7 C (107.1 F)
2007
39.4 C (102.9 F)
2008
41.1 C (106.0 F)
2009
38.9 C (102.0 F)
2010
37.2 C (99.0 F)
2011
30.0 C (86.0 F)
2012
n/a
2013
n/a
2014
n/a
Coldest night (TNn)
The coldest night of the year at Omak 4 N, 1909 to 2014. The record is -32.2 C (-26.0 F) in 1950, marked on the chart; the median year is -21.1 C (-6.0 F).
Coldest night (TNn) at Omak 4 N by year
Year
Coldest night (TNn)
1909
-23.3 C (-9.9 F)
1910
-23.3 C (-9.9 F)
1911
-24.4 C (-11.9 F)
1912
-26.7 C (-16.1 F)
1913
-23.9 C (-11.0 F)
1914
-20.6 C (-5.1 F)
1915
-25.6 C (-14.1 F)
1916
-28.9 C (-20.0 F)
1917
-22.8 C (-9.0 F)
1918
-20.6 C (-5.1 F)
1919
-25.6 C (-14.1 F)
1920
-18.9 C (-2.0 F)
1921
-22.8 C (-9.0 F)
1922
-28.3 C (-18.9 F)
1923
-21.1 C (-6.0 F)
1924
-21.7 C (-7.1 F)
1925
-18.3 C (-0.9 F)
1926
-20.0 C (-4.0 F)
1927
-25.6 C (-14.1 F)
1928
-17.8 C (0.0 F)
1929
-27.2 C (-17.0 F)
1930
-26.7 C (-16.1 F)
1931
-22.8 C (-9.0 F)
1932
-23.9 C (-11.0 F)
1933
-30.6 C (-23.1 F)
1934
-16.1 C (3.0 F)
1935
-21.7 C (-7.1 F)
1936
-26.7 C (-16.1 F)
1937
-27.2 C (-17.0 F)
1938
-15.0 C (5.0 F)
1939
-22.2 C (-8.0 F)
1940
-13.9 C (7.0 F)
1941
-11.7 C (10.9 F)
1942
-18.9 C (-2.0 F)
1943
-26.1 C (-15.0 F)
1944
-18.3 C (-0.9 F)
1945
-16.7 C (1.9 F)
1946
-22.8 C (-9.0 F)
1947
-21.1 C (-6.0 F)
1948
-29.4 C (-20.9 F)
1949
-30.0 C (-22.0 F)
1950
-32.2 C (-26.0 F)
1951
-22.2 C (-8.0 F)
1952
-20.0 C (-4.0 F)
1953
-11.1 C (12.0 F)
1954
-22.8 C (-9.0 F)
1955
-21.7 C (-7.1 F)
1956
-30.6 C (-23.1 F)
1957
-25.0 C (-13.0 F)
1958
-17.2 C (1.0 F)
1959
-21.1 C (-6.0 F)
1960
-20.0 C (-4.0 F)
1961
-17.2 C (1.0 F)
1962
-20.6 C (-5.1 F)
1963
-18.3 C (-0.9 F)
1964
-24.4 C (-11.9 F)
1965
-19.4 C (-2.9 F)
1966
-20.0 C (-4.0 F)
1967
-15.6 C (3.9 F)
1968
-26.7 C (-16.1 F)
1969
-26.7 C (-16.1 F)
1970
-21.7 C (-7.1 F)
1971
-25.6 C (-14.1 F)
1972
-22.8 C (-9.0 F)
1973
-21.1 C (-6.0 F)
1974
-23.3 C (-9.9 F)
1975
-21.7 C (-7.1 F)
1976
-16.7 C (1.9 F)
1977
-20.6 C (-5.1 F)
1978
-23.9 C (-11.0 F)
1979
-27.2 C (-17.0 F)
1980
-24.4 C (-11.9 F)
1991
-8.9 C (16.0 F)
1992
-15.0 C (5.0 F)
1993
-24.4 C (-11.9 F)
1994
-15.0 C (5.0 F)
1995
-15.0 C (5.0 F)
1996
-20.0 C (-4.0 F)
1997
-18.3 C (-0.9 F)
1998
-18.3 C (-0.9 F)
1999
-8.9 C (16.0 F)
2000
-15.0 C (5.0 F)
2001
-11.7 C (10.9 F)
2002
-12.2 C (10.0 F)
2003
-16.1 C (3.0 F)
2004
-20.0 C (-4.0 F)
2005
-22.2 C (-8.0 F)
2006
-17.8 C (0.0 F)
2007
-19.4 C (-2.9 F)
2008
-20.6 C (-5.1 F)
2009
-21.1 C (-6.0 F)
2010
-18.9 C (-2.0 F)
2011
-17.2 C (1.0 F)
2012
n/a
2013
n/a
2014
n/a
Wettest day (Rx1day)
The wettest day of the year at Omak 4 N, 1909 to 2014. The record is 56.1 mm (2.2 in) in 1936, marked on the chart; the median year is 21.5 mm (0.8 in).
Wettest day (Rx1day) at Omak 4 N by year
Year
Wettest day (Rx1day)
1909
25.4 mm (1.0 in)
1910
22.9 mm (0.9 in)
1911
14.2 mm (0.6 in)
1912
49.8 mm (2.0 in)
1913
27.9 mm (1.1 in)
1914
15.2 mm (0.6 in)
1915
17.3 mm (0.7 in)
1916
30.7 mm (1.2 in)
1917
15.2 mm (0.6 in)
1918
45.0 mm (1.8 in)
1919
14.2 mm (0.6 in)
1920
23.6 mm (0.9 in)
1921
17.0 mm (0.7 in)
1922
27.4 mm (1.1 in)
1923
26.4 mm (1.0 in)
1924
15.5 mm (0.6 in)
1925
23.4 mm (0.9 in)
1926
21.1 mm (0.8 in)
1927
32.0 mm (1.3 in)
1928
16.0 mm (0.6 in)
1929
12.7 mm (0.5 in)
1930
17.3 mm (0.7 in)
1931
17.8 mm (0.7 in)
1932
15.7 mm (0.6 in)
1933
13.7 mm (0.5 in)
1934
17.8 mm (0.7 in)
1935
22.4 mm (0.9 in)
1936
56.1 mm (2.2 in)
1937
39.9 mm (1.6 in)
1938
24.9 mm (1.0 in)
1939
23.4 mm (0.9 in)
1940
27.4 mm (1.1 in)
1941
26.9 mm (1.1 in)
1942
48.8 mm (1.9 in)
1943
30.0 mm (1.2 in)
1944
25.1 mm (1.0 in)
1945
18.3 mm (0.7 in)
1946
16.0 mm (0.6 in)
1947
30.2 mm (1.2 in)
1948
27.4 mm (1.1 in)
1949
9.4 mm (0.37 in)
1950
21.3 mm (0.8 in)
1951
29.2 mm (1.1 in)
1952
13.2 mm (0.5 in)
1953
31.8 mm (1.3 in)
1954
15.7 mm (0.6 in)
1955
16.3 mm (0.6 in)
1956
23.6 mm (0.9 in)
1957
24.6 mm (1.0 in)
1958
16.5 mm (0.6 in)
1959
32.3 mm (1.3 in)
1960
14.2 mm (0.6 in)
1961
12.4 mm (0.5 in)
1962
17.3 mm (0.7 in)
1963
15.5 mm (0.6 in)
1964
19.8 mm (0.8 in)
1965
20.3 mm (0.8 in)
1966
16.8 mm (0.7 in)
1967
31.2 mm (1.2 in)
1968
23.9 mm (0.9 in)
1969
20.8 mm (0.8 in)
1970
17.3 mm (0.7 in)
1971
20.1 mm (0.8 in)
1972
30.5 mm (1.2 in)
1973
22.6 mm (0.9 in)
1974
16.5 mm (0.6 in)
1975
41.4 mm (1.6 in)
1976
21.3 mm (0.8 in)
1977
32.3 mm (1.3 in)
1978
20.1 mm (0.8 in)
1979
21.6 mm (0.9 in)
1980
36.3 mm (1.4 in)
1991
1.3 mm (0.05 in)
1992
51.8 mm (2.0 in)
1993
14.0 mm (0.6 in)
1994
22.4 mm (0.9 in)
1995
16.5 mm (0.6 in)
1996
20.3 mm (0.8 in)
1997
33.0 mm (1.3 in)
1998
44.5 mm (1.8 in)
1999
21.6 mm (0.9 in)
2000
15.2 mm (0.6 in)
2001
11.7 mm (0.5 in)
2002
28.7 mm (1.1 in)
2003
20.8 mm (0.8 in)
2004
27.2 mm (1.1 in)
2005
17.0 mm (0.7 in)
2006
22.4 mm (0.9 in)
2007
24.4 mm (1.0 in)
2008
20.3 mm (0.8 in)
2009
17.5 mm (0.7 in)
2010
19.6 mm (0.8 in)
2011
26.2 mm (1.0 in)
2012
44.5 mm (1.8 in)
2013
22.6 mm (0.9 in)
2014
12.2 mm (0.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Omak 4 N, 1909 to 2014. The record is 103.3 mm (4.1 in) in 1992, marked on the chart; the median year is 36.3 mm (1.4 in).
Wettest five days (Rx5day) at Omak 4 N by year
Year
Wettest five days (Rx5day)
1909
39.1 mm (1.5 in)
1910
25.5 mm (1.0 in)
1911
20.8 mm (0.8 in)
1912
57.0 mm (2.2 in)
1913
34.8 mm (1.4 in)
1914
56.1 mm (2.2 in)
1915
35.5 mm (1.4 in)
1916
41.4 mm (1.6 in)
1917
37.4 mm (1.5 in)
1918
45.0 mm (1.8 in)
1919
37.1 mm (1.5 in)
1920
61.9 mm (2.4 in)
1921
42.7 mm (1.7 in)
1922
37.9 mm (1.5 in)
1923
34.6 mm (1.4 in)
1924
27.2 mm (1.1 in)
1925
23.4 mm (0.9 in)
1926
31.2 mm (1.2 in)
1927
51.3 mm (2.0 in)
1928
10.7 mm (0.4 in)
1929
23.4 mm (0.9 in)
1930
25.7 mm (1.0 in)
1931
41.7 mm (1.6 in)
1932
29.4 mm (1.2 in)
1933
21.9 mm (0.9 in)
1934
26.5 mm (1.0 in)
1935
22.4 mm (0.9 in)
1936
77.2 mm (3.0 in)
1937
61.0 mm (2.4 in)
1938
50.0 mm (2.0 in)
1939
55.0 mm (2.2 in)
1940
42.2 mm (1.7 in)
1941
50.0 mm (2.0 in)
1942
49.6 mm (2.0 in)
1943
32.8 mm (1.3 in)
1944
35.3 mm (1.4 in)
1945
38.3 mm (1.5 in)
1946
20.8 mm (0.8 in)
1947
31.3 mm (1.2 in)
1948
49.5 mm (1.9 in)
1949
21.5 mm (0.8 in)
1950
33.7 mm (1.3 in)
1951
68.3 mm (2.7 in)
1952
25.2 mm (1.0 in)
1953
46.9 mm (1.8 in)
1954
44.2 mm (1.7 in)
1955
27.7 mm (1.1 in)
1956
38.3 mm (1.5 in)
1957
48.7 mm (1.9 in)
1958
29.7 mm (1.2 in)
1959
45.3 mm (1.8 in)
1960
37.8 mm (1.5 in)
1961
33.6 mm (1.3 in)
1962
53.9 mm (2.1 in)
1963
27.7 mm (1.1 in)
1964
25.6 mm (1.0 in)
1965
37.3 mm (1.5 in)
1966
33.1 mm (1.3 in)
1967
38.8 mm (1.5 in)
1968
44.2 mm (1.7 in)
1969
46.2 mm (1.8 in)
1970
29.3 mm (1.2 in)
1971
33.8 mm (1.3 in)
1972
46.5 mm (1.8 in)
1973
50.1 mm (2.0 in)
1974
31.5 mm (1.2 in)
1975
41.9 mm (1.6 in)
1976
23.1 mm (0.9 in)
1977
37.1 mm (1.5 in)
1978
30.3 mm (1.2 in)
1979
35.4 mm (1.4 in)
1980
37.1 mm (1.5 in)
1991
0.8 mm (0.03 in)
1992
103.3 mm (4.1 in)
1993
26.9 mm (1.1 in)
1994
33.0 mm (1.3 in)
1995
16.5 mm (0.6 in)
1996
42.2 mm (1.7 in)
1997
52.8 mm (2.1 in)
1998
51.6 mm (2.0 in)
1999
33.3 mm (1.3 in)
2000
28.4 mm (1.1 in)
2001
25.1 mm (1.0 in)
2002
71.6 mm (2.8 in)
2003
32.5 mm (1.3 in)
2004
43.4 mm (1.7 in)
2005
43.0 mm (1.7 in)
2006
25.1 mm (1.0 in)
2007
33.8 mm (1.3 in)
2008
51.9 mm (2.0 in)
2009
29.2 mm (1.1 in)
2010
32.8 mm (1.3 in)
2011
40.4 mm (1.6 in)
2012
82.3 mm (3.2 in)
2013
31.2 mm (1.2 in)
2014
24.4 mm (1.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Omak 4 N, 1909 to 2014. The record is 135 days in 1932, marked on the chart; the median year is 44 days.
Longest dry spell (CDD) at Omak 4 N by year
Year
Longest dry spell (CDD)
1909
82 days
1910
79 days
1911
34 days
1912
41 days
1913
51 days
1914
34 days
1915
37 days
1916
56 days
1917
50 days
1918
51 days
1919
51 days
1920
44 days
1921
97 days
1922
77 days
1923
61 days
1924
87 days
1925
50 days
1926
58 days
1927
58 days
1928
20 days
1929
43 days
1930
31 days
1931
68 days
1932
135 days
1933
59 days
1934
39 days
1935
30 days
1936
112 days
1937
25 days
1938
73 days
1939
68 days
1940
49 days
1941
30 days
1942
59 days
1943
43 days
1944
51 days
1945
88 days
1946
49 days
1947
30 days
1948
25 days
1949
45 days
1950
54 days
1951
36 days
1952
63 days
1953
37 days
1954
48 days
1955
38 days
1956
44 days
1957
52 days
1958
26 days
1959
55 days
1960
50 days
1961
40 days
1962
31 days
1963
44 days
1964
38 days
1965
51 days
1966
44 days
1967
28 days
1968
41 days
1969
74 days
1970
48 days
1971
42 days
1972
51 days
1973
41 days
1974
53 days
1975
38 days
1976
57 days
1977
40 days
1978
36 days
1979
46 days
1980
61 days
1991
9 days
1992
31 days
1993
29 days
1994
39 days
1995
21 days
1996
35 days
1997
31 days
1998
39 days
1999
36 days
2000
42 days
2001
33 days
2002
46 days
2003
37 days
2004
47 days
2005
42 days
2006
49 days
2007
34 days
2008
41 days
2009
44 days
2010
39 days
2011
57 days
2012
51 days
2013
32 days
2014
9 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
65 years with a frost
Across 65 years with a frost, the median last spring frost at Omak 4 N falls on 11 May and the median first autumn frost on 23 September, which leaves a median of 137 days between them.
In 1949 to 2008 the median growing season was 134 days. That is 4 days fewer than in 1912 to 1942.
Fitted over all years, the growing season changes by +1.2 days per decade at this station.
Frost dates and growing season at Omak 4 N
Measure
Median, all years
Earliest period (1912 to 1942)
Recent period (1949 to 2008)
Recent against earliest
Fitted trend
Last spring frost
11 May
12 May
10 May
2 days earlier
-1.0 days per decade
First autumn frost
23 September
24 September
22 September
2 days earlier
+0.1 days per decade
Growing days
137 days
138 days
134 days
4 days fewer
+1.2 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, 1912 to 2007
A day with at least 21.9 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 57.0 mm (2.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Omak 4 N: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
21.9 mm (0.9 in)
5 years
29.8 mm (1.2 in)
10 years
35.5 mm (1.4 in)
25 years
43.6 mm (1.7 in)
50 years
50.1 mm (2.0 in)
100 years
57.0 mm (2.2 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 1912 to 2007.
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: 56.1 mm (2.2 in) in 1936; 49.8 mm (2.0 in) in 1912; 48.8 mm (1.9 in) in 1942.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Omak 4 N, at 1919 and 1946. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1919 ran 0.5 C (1.0 F) higher than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1946 ran 0.5 C (0.8 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Omak 4 N, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1919
+0.5
+1.0
possible
5
1946
-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 Omak 4 N standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Omak 4 N 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.