Record envelope, standing records and threshold days for Barrett Dam (USC00040514), California, United States, with 68 years of record.
Key Facts for Barrett Dam
Barrett Dam (USC00040514) is a weather station in California, United States at 32.68 latitude and -116.67 longitude, 494 m (1,621 ft) above sea level.
The station reports from 1913 to 1980, 68 years of record.
1,464 records set at Barrett Dam still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Barrett Dam set a daily record high maximum temperature of 28.9 C (84.0 F) on 30 December 1980.
About the Station
Location: California, United States, 32.68 latitude, -116.67 longitude.
Elevation: 494 m (1,621 ft).
Period of record: 1913 to 1980, 68 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 Barrett Dam. 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 Barrett Dam, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
32.2 C (90.0 F)
-9.4 C (15.1 F)
n/a
n/a
Feb
33.3 C (91.9 F)
-6.1 C (21.0 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-5.0 C (23.0 F)
n/a
n/a
Apr
35.6 C (96.1 F)
-2.8 C (27.0 F)
n/a
n/a
May
40.0 C (104.0 F)
0.0 C (32.0 F)
n/a
n/a
Jun
46.7 C (116.1 F)
2.2 C (36.0 F)
n/a
n/a
Jul
45.0 C (113.0 F)
0.0 C (32.0 F)
n/a
n/a
Aug
45.6 C (114.1 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
43.9 C (111.0 F)
-2.2 C (28.0 F)
n/a
n/a
Oct
41.7 C (107.1 F)
-2.8 C (27.0 F)
n/a
n/a
Nov
36.7 C (98.1 F)
-5.6 C (21.9 F)
n/a
n/a
Dec
32.2 C (90.0 F)
-8.9 C (16.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Barrett Dam still stand. 1917 holds the most, with 85.
Standing records at Barrett Dam by the year they were set
Year set
Standing records
1914
33
1915
58
1916
21
1917
85
1918
56
1919
54
1920
36
1921
42
1922
22
1923
40
1924
38
1925
27
1926
38
1927
8
1928
16
1929
19
1930
15
1931
23
1932
11
1933
26
1934
37
1935
32
1936
28
1937
18
1938
19
1939
6
1940
19
1941
13
1942
13
1943
12
1944
3
1945
14
1946
10
1947
29
1948
13
1949
32
1950
26
1951
22
1952
11
1953
21
1954
14
1955
21
1956
13
1957
13
1958
17
1959
8
1960
8
1961
11
1962
20
1963
15
1964
16
1965
24
1966
11
1967
17
1968
17
1969
13
1970
11
1971
20
1972
19
1973
14
1974
11
1975
17
1976
13
1977
16
1978
21
1979
13
1980
25
All-Time Record Progression
1 new records
1 all-time records were set at Barrett Dam between 7 January 1950 and 7 January 1950. Each dot is a new record.
When Barrett Dam set new all-time records
Date
Kind
Detail
1950-01-07
Record low minimum temperature
Record low minimum temperature -9.4 C (15.1 F)
Wettest Day of Each Month
Feb: 135.1 mm (5.3 in)
The wettest day on record for each calendar month at Barrett Dam. The most was 135.1 mm (5.3 in) on 16 February 1927.
Record daily precipitation for each month at Barrett Dam
Month
Record daily precipitation (mm)
Date
Jan
86.4 mm (3.4 in)
23 January 1943
Feb
135.1 mm (5.3 in)
16 February 1927
Mar
104.1 mm (4.1 in)
3 March 1938
Apr
58.4 mm (2.3 in)
6 April 1926
May
45.7 mm (1.8 in)
2 May 1930
Jun
11.4 mm (0.4 in)
10 June 1957
Jul
21.6 mm (0.9 in)
20 July 1974
Aug
56.9 mm (2.2 in)
17 August 1977
Sep
55.1 mm (2.2 in)
6 September 1939
Oct
88.9 mm (3.5 in)
5 October 1925
Nov
125.0 mm (4.9 in)
23 November 1965
Dec
121.7 mm (4.8 in)
26 December 1921
Period of Record Coverage
1913 to 1980
Complete yearUnder 90 percent of days
68 years of record at Barrett Dam, 1913 to 1980. 2 years have data for under 90 percent of days and are left out of rankings: 1913, 1916.
Cooler than the station meanWarmer than the station mean
One stripe for each of 59 complete years at Barrett Dam, 1914 to 1980. Blue stripes are years cooler than the station's own mean of 16.2 C (61.2 F); red stripes are warmer. The coolest year was 1914, at 14.8 C (58.7 F), and the warmest was 1934, at 17.7 C (63.8 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Barrett Dam as warming stripes, 1914 to 1980
Year
Annual mean temperature
Difference from the station mean
1914
14.8 C
-1.37 C
1917
15.0 C
-1.20 C
1918
16.9 C
+0.65 C
1920
15.5 C
-0.71 C
1921
16.0 C
-0.18 C
1922
16.0 C
-0.19 C
1924
16.7 C
+0.48 C
1925
16.8 C
+0.60 C
1926
17.2 C
+1.02 C
1927
16.6 C
+0.35 C
1928
17.1 C
+0.93 C
1929
16.8 C
+0.54 C
1930
16.3 C
+0.04 C
1931
17.0 C
+0.82 C
1932
16.3 C
+0.06 C
1933
16.0 C
-0.25 C
1934
17.7 C
+1.46 C
1935
16.8 C
+0.55 C
1938
17.3 C
+1.08 C
1939
17.4 C
+1.18 C
1940
17.7 C
+1.45 C
1941
16.4 C
+0.21 C
1942
16.3 C
+0.12 C
1943
17.1 C
+0.85 C
1944
15.8 C
-0.44 C
1945
16.2 C
-0.02 C
1946
16.5 C
+0.32 C
1948
15.7 C
-0.51 C
1949
15.4 C
-0.81 C
1950
16.1 C
-0.07 C
1951
15.6 C
-0.66 C
1952
16.1 C
-0.16 C
1954
16.4 C
+0.14 C
1955
15.8 C
-0.42 C
1956
15.7 C
-0.50 C
1957
15.6 C
-0.60 C
1958
16.1 C
-0.10 C
1959
16.6 C
+0.34 C
1960
15.9 C
-0.35 C
1961
15.9 C
-0.33 C
1962
15.7 C
-0.56 C
1963
16.0 C
-0.26 C
1964
15.2 C
-1.02 C
1965
15.3 C
-0.96 C
1966
16.1 C
-0.10 C
1967
15.9 C
-0.36 C
1968
15.7 C
-0.52 C
1969
16.3 C
+0.10 C
1970
16.2 C
+0.01 C
1971
15.7 C
-0.56 C
1972
16.5 C
+0.24 C
1973
15.4 C
-0.85 C
1974
15.7 C
-0.48 C
1975
15.0 C
-1.19 C
1976
15.9 C
-0.28 C
1977
16.4 C
+0.23 C
1978
16.9 C
+0.72 C
1979
16.9 C
+0.68 C
1980
17.1 C
+0.89 C
The fitted trend in annual mean temperature here over 1914 to 1980 is -0.07 C (-0.16 to 0.02) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.13 F (-0.29 to 0.03) per decade. The slope is a straight line fitted to 59 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Barrett Dam
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.07 C (-0.16 to 0.02) per decade
-0.13 F (-0.29 to 0.03) per decade
1914 to 1980
59
Not clearly different from zero
Mean daily maximum
-0.10 C (-0.21 to 0.01) per decade
-0.18 F (-0.37 to 0.01) per decade
1914 to 1980
59
Not clearly different from zero
Mean daily minimum
-0.04 C (-0.22 to 0.13) per decade
-0.1 F (-0.4 to 0.2) per decade
1914 to 1980
59
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
1913 to 1980
Yearly extremes at Barrett Dam: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.7 C (116.1 F)
1917
41.7 C (107.1 F)
68
Coldest night (TNn)
-9.4 C (15.1 F)
1950
-4.7 C (23.5 F)
68
Wettest day (Rx1day)
135.1 mm (5.3 in)
1927
46.5 mm (1.8 in)
68
Wettest five days (Rx5day)
391.2 mm (15.4 in)
1927
89.3 mm (3.5 in)
68
Longest dry spell (CDD)
196 days
1973
89 days
68
Hottest day (TXx)
The hottest day of the year at Barrett Dam, 1913 to 1980. The record is 46.7 C (116.1 F) in 1917, marked on the chart; the median year is 41.7 C (107.1 F).
Hottest day (TXx) at Barrett Dam by year
Year
Hottest day (TXx)
1913
18.9 C (66.0 F)
1914
36.7 C (98.1 F)
1915
43.3 C (109.9 F)
1916
36.7 C (98.1 F)
1917
46.7 C (116.1 F)
1918
45.6 C (114.1 F)
1919
42.2 C (108.0 F)
1920
43.3 C (109.9 F)
1921
41.7 C (107.1 F)
1922
42.8 C (109.0 F)
1923
41.7 C (107.1 F)
1924
40.6 C (105.1 F)
1925
45.0 C (113.0 F)
1926
43.9 C (111.0 F)
1927
39.4 C (102.9 F)
1928
40.0 C (104.0 F)
1929
41.7 C (107.1 F)
1930
40.0 C (104.0 F)
1931
42.2 C (108.0 F)
1932
40.0 C (104.0 F)
1933
42.2 C (108.0 F)
1934
42.8 C (109.0 F)
1935
40.6 C (105.1 F)
1936
43.3 C (109.9 F)
1937
42.8 C (109.0 F)
1938
40.0 C (104.0 F)
1939
43.3 C (109.9 F)
1940
40.6 C (105.1 F)
1941
38.3 C (100.9 F)
1942
42.2 C (108.0 F)
1943
41.7 C (107.1 F)
1944
42.8 C (109.0 F)
1945
41.7 C (107.1 F)
1946
40.6 C (105.1 F)
1947
41.7 C (107.1 F)
1948
42.8 C (109.0 F)
1949
41.1 C (106.0 F)
1950
42.2 C (108.0 F)
1951
40.6 C (105.1 F)
1952
41.1 C (106.0 F)
1953
41.7 C (107.1 F)
1954
40.6 C (105.1 F)
1955
43.9 C (111.0 F)
1956
41.7 C (107.1 F)
1957
41.1 C (106.0 F)
1958
42.2 C (108.0 F)
1959
41.1 C (106.0 F)
1960
43.9 C (111.0 F)
1961
41.1 C (106.0 F)
1962
41.1 C (106.0 F)
1963
40.6 C (105.1 F)
1964
40.0 C (104.0 F)
1965
41.1 C (106.0 F)
1966
39.4 C (102.9 F)
1967
41.1 C (106.0 F)
1968
39.4 C (102.9 F)
1969
42.2 C (108.0 F)
1970
41.7 C (107.1 F)
1971
43.3 C (109.9 F)
1972
41.7 C (107.1 F)
1973
40.6 C (105.1 F)
1974
41.7 C (107.1 F)
1975
40.0 C (104.0 F)
1976
40.6 C (105.1 F)
1977
40.6 C (105.1 F)
1978
41.7 C (107.1 F)
1979
41.7 C (107.1 F)
1980
40.6 C (105.1 F)
Coldest night (TNn)
The coldest night of the year at Barrett Dam, 1913 to 1980. The record is -9.4 C (15.1 F) in 1950, marked on the chart; the median year is -4.7 C (23.5 F).
Coldest night (TNn) at Barrett Dam by year
Year
Coldest night (TNn)
1913
-2.2 C (28.0 F)
1914
-4.4 C (24.1 F)
1915
-3.9 C (25.0 F)
1916
-8.3 C (17.1 F)
1917
-5.6 C (21.9 F)
1918
-8.9 C (16.0 F)
1919
-6.7 C (19.9 F)
1920
-6.1 C (21.0 F)
1921
-6.1 C (21.0 F)
1922
-5.6 C (21.9 F)
1923
-3.3 C (26.1 F)
1924
-4.4 C (24.1 F)
1925
-4.4 C (24.1 F)
1926
-4.4 C (24.1 F)
1927
-2.2 C (28.0 F)
1928
-2.2 C (28.0 F)
1929
-3.3 C (26.1 F)
1930
-3.9 C (25.0 F)
1931
-3.9 C (25.0 F)
1932
-3.9 C (25.0 F)
1933
-2.2 C (28.0 F)
1934
-2.2 C (28.0 F)
1935
-5.0 C (23.0 F)
1936
-5.6 C (21.9 F)
1937
-8.9 C (16.0 F)
1938
-0.6 C (30.9 F)
1939
-3.3 C (26.1 F)
1940
0.0 C (32.0 F)
1941
-1.1 C (30.0 F)
1942
-3.3 C (26.1 F)
1943
-2.2 C (28.0 F)
1944
-1.7 C (28.9 F)
1945
-2.2 C (28.0 F)
1946
-1.7 C (28.9 F)
1947
-5.0 C (23.0 F)
1948
-4.4 C (24.1 F)
1949
-7.8 C (18.0 F)
1950
-9.4 C (15.1 F)
1951
-7.2 C (19.0 F)
1952
-7.8 C (18.0 F)
1953
-8.3 C (17.1 F)
1954
-6.7 C (19.9 F)
1955
-4.4 C (24.1 F)
1956
-5.0 C (23.0 F)
1957
-2.8 C (27.0 F)
1958
-5.6 C (21.9 F)
1959
-3.9 C (25.0 F)
1960
-6.7 C (19.9 F)
1961
-5.6 C (21.9 F)
1962
-6.7 C (19.9 F)
1963
-7.2 C (19.0 F)
1964
-5.6 C (21.9 F)
1965
-6.1 C (21.0 F)
1966
-4.4 C (24.1 F)
1967
-3.9 C (25.0 F)
1968
-6.7 C (19.9 F)
1969
-5.0 C (23.0 F)
1970
-6.1 C (21.0 F)
1971
-3.9 C (25.0 F)
1972
-5.6 C (21.9 F)
1973
-5.0 C (23.0 F)
1974
-7.8 C (18.0 F)
1975
-5.0 C (23.0 F)
1976
-7.2 C (19.0 F)
1977
-3.9 C (25.0 F)
1978
-5.6 C (21.9 F)
1979
-2.2 C (28.0 F)
1980
1.1 C (34.0 F)
Wettest day (Rx1day)
The wettest day of the year at Barrett Dam, 1913 to 1980. The record is 135.1 mm (5.3 in) in 1927, marked on the chart; the median year is 46.5 mm (1.8 in).
Wettest day (Rx1day) at Barrett Dam by year
Year
Wettest day (Rx1day)
1913
16.8 mm (0.7 in)
1914
81.3 mm (3.2 in)
1915
88.9 mm (3.5 in)
1916
70.4 mm (2.8 in)
1917
38.9 mm (1.5 in)
1918
63.0 mm (2.5 in)
1919
38.9 mm (1.5 in)
1920
46.5 mm (1.8 in)
1921
121.7 mm (4.8 in)
1922
46.2 mm (1.8 in)
1923
37.6 mm (1.5 in)
1924
34.0 mm (1.3 in)
1925
88.9 mm (3.5 in)
1926
58.4 mm (2.3 in)
1927
135.1 mm (5.3 in)
1928
32.8 mm (1.3 in)
1929
39.1 mm (1.5 in)
1930
45.7 mm (1.8 in)
1931
46.5 mm (1.8 in)
1932
46.5 mm (1.8 in)
1933
43.7 mm (1.7 in)
1934
33.3 mm (1.3 in)
1935
35.6 mm (1.4 in)
1936
68.3 mm (2.7 in)
1937
128.5 mm (5.1 in)
1938
104.1 mm (4.1 in)
1939
55.1 mm (2.2 in)
1940
93.0 mm (3.7 in)
1941
50.3 mm (2.0 in)
1942
62.0 mm (2.4 in)
1943
86.4 mm (3.4 in)
1944
51.3 mm (2.0 in)
1945
89.4 mm (3.5 in)
1946
35.3 mm (1.4 in)
1947
42.2 mm (1.7 in)
1948
46.2 mm (1.8 in)
1949
57.4 mm (2.3 in)
1950
26.4 mm (1.0 in)
1951
49.8 mm (2.0 in)
1952
43.7 mm (1.7 in)
1953
30.0 mm (1.2 in)
1954
48.5 mm (1.9 in)
1955
25.9 mm (1.0 in)
1956
30.2 mm (1.2 in)
1957
40.6 mm (1.6 in)
1958
41.1 mm (1.6 in)
1959
33.5 mm (1.3 in)
1960
37.6 mm (1.5 in)
1961
39.6 mm (1.6 in)
1962
49.8 mm (2.0 in)
1963
50.5 mm (2.0 in)
1964
44.5 mm (1.8 in)
1965
125.0 mm (4.9 in)
1966
87.1 mm (3.4 in)
1967
72.1 mm (2.8 in)
1968
43.4 mm (1.7 in)
1969
70.4 mm (2.8 in)
1970
45.5 mm (1.8 in)
1971
23.9 mm (0.9 in)
1972
35.6 mm (1.4 in)
1973
24.1 mm (0.9 in)
1974
48.3 mm (1.9 in)
1975
32.5 mm (1.3 in)
1976
51.3 mm (2.0 in)
1977
56.9 mm (2.2 in)
1978
85.6 mm (3.4 in)
1979
59.2 mm (2.3 in)
1980
83.8 mm (3.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Barrett Dam, 1913 to 1980. The record is 391.2 mm (15.4 in) in 1927, marked on the chart; the median year is 89.3 mm (3.5 in).
Wettest five days (Rx5day) at Barrett Dam by year
Year
Wettest five days (Rx5day)
1913
25.5 mm (1.0 in)
1914
127.8 mm (5.0 in)
1915
137.5 mm (5.4 in)
1916
78.0 mm (3.1 in)
1917
58.0 mm (2.3 in)
1918
143.0 mm (5.6 in)
1919
61.9 mm (2.4 in)
1920
106.5 mm (4.2 in)
1921
194.9 mm (7.7 in)
1922
83.8 mm (3.3 in)
1923
62.5 mm (2.5 in)
1924
61.0 mm (2.4 in)
1925
105.4 mm (4.1 in)
1926
152.7 mm (6.0 in)
1927
391.2 mm (15.4 in)
1928
41.4 mm (1.6 in)
1929
66.3 mm (2.6 in)
1930
110.7 mm (4.4 in)
1931
69.0 mm (2.7 in)
1932
102.0 mm (4.0 in)
1933
94.6 mm (3.7 in)
1934
75.2 mm (3.0 in)
1935
114.2 mm (4.5 in)
1936
126.7 mm (5.0 in)
1937
142.5 mm (5.6 in)
1938
227.5 mm (9.0 in)
1939
89.4 mm (3.5 in)
1940
181.4 mm (7.1 in)
1941
86.8 mm (3.4 in)
1942
74.7 mm (2.9 in)
1943
184.1 mm (7.2 in)
1944
124.4 mm (4.9 in)
1945
170.8 mm (6.7 in)
1946
50.1 mm (2.0 in)
1947
80.8 mm (3.2 in)
1948
56.9 mm (2.2 in)
1949
111.3 mm (4.4 in)
1950
41.8 mm (1.6 in)
1951
92.0 mm (3.6 in)
1952
102.9 mm (4.1 in)
1953
48.0 mm (1.9 in)
1954
141.5 mm (5.6 in)
1955
50.0 mm (2.0 in)
1956
44.4 mm (1.7 in)
1957
80.9 mm (3.2 in)
1958
90.1 mm (3.5 in)
1959
75.1 mm (3.0 in)
1960
78.2 mm (3.1 in)
1961
39.6 mm (1.6 in)
1962
81.1 mm (3.2 in)
1963
89.2 mm (3.5 in)
1964
73.2 mm (2.9 in)
1965
169.7 mm (6.7 in)
1966
240.7 mm (9.5 in)
1967
115.3 mm (4.5 in)
1968
46.4 mm (1.8 in)
1969
140.0 mm (5.5 in)
1970
104.0 mm (4.1 in)
1971
48.2 mm (1.9 in)
1972
73.0 mm (2.9 in)
1973
56.1 mm (2.2 in)
1974
109.3 mm (4.3 in)
1975
68.0 mm (2.7 in)
1976
146.6 mm (5.8 in)
1977
72.2 mm (2.8 in)
1978
159.9 mm (6.3 in)
1979
88.2 mm (3.5 in)
1980
230.9 mm (9.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Barrett Dam, 1913 to 1980. The record is 196 days in 1973, marked on the chart; the median year is 89 days.
Longest dry spell (CDD) at Barrett Dam by year
Year
Longest dry spell (CDD)
1913
17 days
1914
108 days
1915
100 days
1916
57 days
1917
161 days
1918
38 days
1919
43 days
1920
23 days
1921
36 days
1922
57 days
1923
52 days
1924
36 days
1925
33 days
1926
148 days
1927
170 days
1928
113 days
1929
104 days
1930
75 days
1931
53 days
1932
164 days
1933
66 days
1934
72 days
1935
98 days
1936
68 days
1937
99 days
1938
84 days
1939
89 days
1940
164 days
1941
33 days
1942
165 days
1943
167 days
1944
151 days
1945
129 days
1946
102 days
1947
107 days
1948
56 days
1949
100 days
1950
70 days
1951
56 days
1952
80 days
1953
43 days
1954
109 days
1955
116 days
1956
70 days
1957
122 days
1958
93 days
1959
89 days
1960
72 days
1961
142 days
1962
111 days
1963
66 days
1964
126 days
1965
108 days
1966
105 days
1967
49 days
1968
77 days
1969
117 days
1970
53 days
1971
67 days
1972
76 days
1973
196 days
1974
87 days
1975
80 days
1976
97 days
1977
83 days
1978
127 days
1979
91 days
1980
153 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
56 years with a frost
Across 56 years with a frost, the median last spring frost at Barrett Dam falls on 21 March and the median first autumn frost on 22 November, which leaves a median of 243 days between them.
Fitted over all years, the growing season changes by -2.7 days per decade at this station.
Frost dates and growing season at Barrett Dam
Measure
Median, all years
Earliest period
Recent period (1949 to 1979)
Recent against earliest
Fitted trend
Last spring frost
21 March
n/a
30 March
n/a
+3.9 days per decade
First autumn frost
22 November
n/a
18 November
n/a
+1.2 days per decade
Growing days
243 days
n/a
234 days
n/a
-2.7 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
57 years, 1914 to 1980
A day with at least 49.3 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 168.9 mm (6.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Barrett Dam: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
49.3 mm (1.9 in)
5 years
71.9 mm (2.8 in)
10 years
90.0 mm (3.5 in)
25 years
117.3 mm (4.6 in)
50 years
141.3 mm (5.6 in)
100 years
168.9 mm (6.6 in)
Longer than the 57 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, 57 years of values from 1914 to 1980.
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: 135.1 mm (5.3 in) in 1927; 128.5 mm (5.1 in) in 1937; 125.0 mm (4.9 in) in 1965.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Barrett Dam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Barrett Dam 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.