Record envelope, standing records and threshold days for Arroyo Seco (USC00040322), California, United States, with 40 years of record.
Key Facts for Arroyo Seco
Arroyo Seco (USC00040322) is a weather station in California, United States at 36.24 latitude and -121.48 longitude, 287 m (940 ft) above sea level.
The station reports from 1915 to 1954, 40 years of record.
0 records set at Arroyo Seco still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Arroyo Seco set a daily record precipitation of 48.3 mm (1.9 in) on 14 February 1954.
About the Station
Location: California, United States, 36.24 latitude, -121.48 longitude.
Elevation: 287 m (940 ft).
Period of record: 1915 to 1954, 40 years.
Eligible elements: prcp.
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 Arroyo Seco. 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 Arroyo Seco, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
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Feb
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Mar
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Apr
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May
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Jun
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Jul
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Aug
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Sep
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Oct
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Nov
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Dec
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Which Years Hold Standing Records
0 standing records
0 records at Arroyo Seco still stand.
Standing records at Arroyo Seco by the year they were set
Year set
Standing records
Wettest Day of Each Month
Dec: 307.3 mm (12.1 in)
The wettest day on record for each calendar month at Arroyo Seco. The most was 307.3 mm (12.1 in) on 22 December 1940.
Record daily precipitation for each month at Arroyo Seco
Yearly extremes at Arroyo Seco: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Wettest day (Rx1day)
307.3 mm (12.1 in)
1940
63.6 mm (2.5 in)
38
Wettest five days (Rx5day)
307.3 mm (12.1 in)
1940
118.4 mm (4.7 in)
38
Longest dry spell (CDD)
180 days
1932
106 days
38
Wettest day (Rx1day)
The wettest day of the year at Arroyo Seco, 1915 to 1954. The record is 307.3 mm (12.1 in) in 1940, marked on the chart; the median year is 63.6 mm (2.5 in).
Wettest day (Rx1day) at Arroyo Seco by year
Year
Wettest day (Rx1day)
1915
73.7 mm (2.9 in)
1916
105.4 mm (4.1 in)
1917
83.8 mm (3.3 in)
1918
69.9 mm (2.8 in)
1919
43.7 mm (1.7 in)
1920
37.6 mm (1.5 in)
1921
85.1 mm (3.4 in)
1922
61.2 mm (2.4 in)
1923
21.1 mm (0.8 in)
1924
52.6 mm (2.1 in)
1925
41.9 mm (1.6 in)
1926
101.6 mm (4.0 in)
1927
80.5 mm (3.2 in)
1928
50.8 mm (2.0 in)
1929
45.7 mm (1.8 in)
1930
44.5 mm (1.8 in)
1931
66.0 mm (2.6 in)
1932
78.7 mm (3.1 in)
1933
85.1 mm (3.4 in)
1934
59.7 mm (2.4 in)
1935
50.5 mm (2.0 in)
1936
143.3 mm (5.6 in)
1937
91.9 mm (3.6 in)
1938
195.6 mm (7.7 in)
1939
43.9 mm (1.7 in)
1940
307.3 mm (12.1 in)
1941
106.4 mm (4.2 in)
1942
59.7 mm (2.4 in)
1943
208.3 mm (8.2 in)
1945
161.3 mm (6.4 in)
1946
97.5 mm (3.8 in)
1947
41.7 mm (1.6 in)
1948
58.2 mm (2.3 in)
1949
39.6 mm (1.6 in)
1950
100.1 mm (3.9 in)
1951
16.5 mm (0.6 in)
1953
36.6 mm (1.4 in)
1954
48.3 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Arroyo Seco, 1915 to 1954. The record is 307.3 mm (12.1 in) in 1940, marked on the chart; the median year is 118.4 mm (4.7 in).
Wettest five days (Rx5day) at Arroyo Seco by year
Year
Wettest five days (Rx5day)
1915
143.4 mm (5.6 in)
1916
117.4 mm (4.6 in)
1917
180.4 mm (7.1 in)
1918
170.5 mm (6.7 in)
1919
119.4 mm (4.7 in)
1920
44.7 mm (1.8 in)
1921
174.1 mm (6.9 in)
1922
93.2 mm (3.7 in)
1923
50.3 mm (2.0 in)
1924
74.4 mm (2.9 in)
1925
72.1 mm (2.8 in)
1926
260.9 mm (10.3 in)
1927
214.3 mm (8.4 in)
1928
88.8 mm (3.5 in)
1929
59.1 mm (2.3 in)
1930
82.8 mm (3.3 in)
1931
116.8 mm (4.6 in)
1932
149.1 mm (5.9 in)
1933
187.7 mm (7.4 in)
1934
170.2 mm (6.7 in)
1935
111.8 mm (4.4 in)
1936
191.1 mm (7.5 in)
1937
95.0 mm (3.7 in)
1938
237.0 mm (9.3 in)
1939
43.9 mm (1.7 in)
1940
307.3 mm (12.1 in)
1941
153.3 mm (6.0 in)
1942
139.5 mm (5.5 in)
1943
300.3 mm (11.8 in)
1945
219.7 mm (8.6 in)
1946
167.3 mm (6.6 in)
1947
55.9 mm (2.2 in)
1948
81.6 mm (3.2 in)
1949
76.0 mm (3.0 in)
1950
161.1 mm (6.3 in)
1951
32.8 mm (1.3 in)
1953
57.7 mm (2.3 in)
1954
111.1 mm (4.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Arroyo Seco, 1915 to 1954. The record is 180 days in 1932, marked on the chart; the median year is 106 days.
Longest dry spell (CDD) at Arroyo Seco by year
Year
Longest dry spell (CDD)
1915
167 days
1916
95 days
1917
61 days
1918
157 days
1919
153 days
1920
92 days
1921
103 days
1922
122 days
1923
62 days
1924
165 days
1925
137 days
1926
174 days
1927
100 days
1928
176 days
1929
66 days
1930
137 days
1931
150 days
1932
180 days
1933
59 days
1934
133 days
1935
56 days
1936
99 days
1937
102 days
1938
137 days
1939
162 days
1940
109 days
1941
114 days
1942
92 days
1943
140 days
1945
51 days
1946
130 days
1947
88 days
1948
7 days
1949
93 days
1950
39 days
1951
149 days
1953
42 days
1954
22 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.
Download the Data
Data for Arroyo Seco standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Arroyo Seco 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.