Record envelope, standing records and threshold days for Saint Marys College (USC00047661), California, United States, with 40 years of record.
Key Facts for Saint Marys College
Saint Marys College (USC00047661) is a weather station in California, United States at 37.83 latitude and -122.10 longitude, 189 m (620 ft) above sea level.
The station reports from 1942 to 1981, 40 years of record.
1,464 records set at Saint Marys College still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Saint Marys College set a daily record low maximum temperature of 17.2 C (63.0 F) on 17 July 1981.
About the Station
Location: California, United States, 37.83 latitude, -122.10 longitude.
Elevation: 189 m (620 ft).
Period of record: 1942 to 1981, 40 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 Saint Marys College. 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 Saint Marys College, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
21.1 C (70.0 F)
-7.8 C (18.0 F)
n/a
n/a
Feb
23.3 C (73.9 F)
-7.2 C (19.0 F)
n/a
n/a
Mar
30.6 C (87.1 F)
-5.6 C (21.9 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-2.2 C (28.0 F)
n/a
n/a
May
36.7 C (98.1 F)
0.0 C (32.0 F)
n/a
n/a
Jun
42.2 C (108.0 F)
2.8 C (37.0 F)
n/a
n/a
Jul
43.3 C (109.9 F)
5.6 C (42.1 F)
n/a
n/a
Aug
40.6 C (105.1 F)
4.4 C (39.9 F)
n/a
n/a
Sep
42.8 C (109.0 F)
1.7 C (35.1 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-2.2 C (28.0 F)
n/a
n/a
Nov
29.4 C (84.9 F)
-7.2 C (19.0 F)
n/a
n/a
Dec
22.8 C (73.0 F)
-10.0 C (14.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Saint Marys College still stand. 1950 holds the most, with 66.
Standing records at Saint Marys College by the year they were set
Year set
Standing records
1942
2
1943
61
1944
45
1945
35
1946
30
1947
38
1948
54
1949
55
1950
66
1951
43
1952
40
1953
40
1954
35
1955
60
1956
36
1957
39
1958
36
1959
53
1960
42
1961
38
1962
40
1963
39
1964
51
1965
41
1966
34
1967
39
1968
33
1969
20
1970
27
1971
34
1972
49
1973
28
1974
18
1975
27
1976
19
1977
32
1978
30
1979
21
1980
18
1981
16
Wettest Day of Each Month
Oct: 213.4 mm (8.4 in)
The wettest day on record for each calendar month at Saint Marys College. The most was 213.4 mm (8.4 in) on 13 October 1962.
Record daily precipitation for each month at Saint Marys College
Month
Record daily precipitation (mm)
Date
Jan
140.5 mm (5.5 in)
21 January 1967
Feb
96.5 mm (3.8 in)
1 February 1945
Mar
83.6 mm (3.3 in)
1 March 1974
Apr
86.4 mm (3.4 in)
2 April 1958
May
75.4 mm (3.0 in)
18 May 1957
Jun
21.6 mm (0.9 in)
2 June 1967
Jul
21.3 mm (0.8 in)
8 July 1974
Aug
10.7 mm (0.4 in)
18 August 1976
Sep
73.4 mm (2.9 in)
18 September 1959
Oct
213.4 mm (8.4 in)
13 October 1962
Nov
138.4 mm (5.4 in)
18 November 1950
Dec
114.3 mm (4.5 in)
23 December 1955
Period of Record Coverage
1942 to 1981
Complete yearUnder 90 percent of days
40 years of record at Saint Marys College, 1942 to 1981. 2 years have data for under 90 percent of days and are left out of rankings: 1942, 1981.
Cooler than the station meanWarmer than the station mean
One stripe for each of 37 complete years at Saint Marys College, 1943 to 1980. Blue stripes are years cooler than the station's own mean of 13.5 C (56.3 F); red stripes are warmer. The coolest year was 1971, at 12.7 C (54.9 F), and the warmest was 1958, at 14.5 C (58.1 F). The strongest colour marks a difference of 1.0 C (1.8 F).
Annual mean temperature at Saint Marys College as warming stripes, 1943 to 1980
Year
Annual mean temperature
Difference from the station mean
1943
14.1 C
+0.56 C
1944
13.5 C
-0.01 C
1945
13.7 C
+0.22 C
1946
12.8 C
-0.71 C
1947
13.8 C
+0.28 C
1948
13.0 C
-0.51 C
1949
12.8 C
-0.66 C
1950
13.7 C
+0.22 C
1951
12.9 C
-0.59 C
1952
13.3 C
-0.18 C
1953
13.7 C
+0.16 C
1954
13.3 C
-0.25 C
1955
13.2 C
-0.35 C
1956
13.4 C
-0.15 C
1957
13.8 C
+0.26 C
1958
14.5 C
+0.99 C
1959
14.3 C
+0.82 C
1961
13.5 C
+0.02 C
1962
13.3 C
-0.24 C
1963
13.2 C
-0.35 C
1964
13.3 C
-0.22 C
1965
13.0 C
-0.49 C
1966
14.0 C
+0.46 C
1967
13.4 C
-0.13 C
1968
13.4 C
-0.13 C
1969
13.5 C
-0.01 C
1970
13.8 C
+0.31 C
1971
12.7 C
-0.79 C
1972
13.3 C
-0.24 C
1973
13.8 C
+0.26 C
1974
13.8 C
+0.28 C
1975
13.1 C
-0.45 C
1976
13.5 C
-0.04 C
1977
13.8 C
+0.29 C
1978
14.1 C
+0.58 C
1979
14.2 C
+0.67 C
1980
13.7 C
+0.24 C
The fitted trend in annual mean temperature here over 1943 to 1980 is 0.1 C (-0.1 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.4) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Saint Marys College
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.4) per decade
1943 to 1980
37
Not clearly different from zero
Mean daily maximum
0.1 C (-0.1 to 0.3) per decade
0.2 F (-0.1 to 0.6) per decade
1943 to 1980
37
Not clearly different from zero
Mean daily minimum
0.01 C (-0.16 to 0.18) per decade
0.02 F (-0.29 to 0.33) per decade
1943 to 1980
37
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
1942 to 1981
Yearly extremes at Saint Marys College: 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)
1972
38.9 C (102.0 F)
40
Coldest night (TNn)
-10.0 C (14.0 F)
1972
-5.6 C (21.9 F)
40
Wettest day (Rx1day)
213.4 mm (8.4 in)
1962
67.8 mm (2.7 in)
40
Wettest five days (Rx5day)
357.9 mm (14.1 in)
1955
126.4 mm (5.0 in)
40
Longest dry spell (CDD)
163 days
1979
112 days
40
Hottest day (TXx)
The hottest day of the year at Saint Marys College, 1942 to 1981. The record is 43.3 C (109.9 F) in 1972, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Saint Marys College by year
Year
Hottest day (TXx)
1942
18.9 C (66.0 F)
1943
37.8 C (100.0 F)
1944
39.4 C (102.9 F)
1945
37.8 C (100.0 F)
1946
38.9 C (102.0 F)
1947
37.2 C (99.0 F)
1948
37.8 C (100.0 F)
1949
38.3 C (100.9 F)
1950
41.7 C (107.1 F)
1951
37.8 C (100.0 F)
1952
37.8 C (100.0 F)
1953
38.3 C (100.9 F)
1954
39.4 C (102.9 F)
1955
42.8 C (109.0 F)
1956
40.0 C (104.0 F)
1957
40.6 C (105.1 F)
1958
37.2 C (99.0 F)
1959
40.6 C (105.1 F)
1960
41.1 C (106.0 F)
1961
42.2 C (108.0 F)
1962
37.8 C (100.0 F)
1963
37.2 C (99.0 F)
1964
38.9 C (102.0 F)
1965
35.6 C (96.1 F)
1966
39.4 C (102.9 F)
1967
37.8 C (100.0 F)
1968
36.7 C (98.1 F)
1969
37.8 C (100.0 F)
1970
38.9 C (102.0 F)
1971
38.9 C (102.0 F)
1972
43.3 C (109.9 F)
1973
38.3 C (100.9 F)
1974
37.8 C (100.0 F)
1975
39.4 C (102.9 F)
1976
40.0 C (104.0 F)
1977
40.0 C (104.0 F)
1978
39.4 C (102.9 F)
1979
38.3 C (100.9 F)
1980
39.4 C (102.9 F)
1981
40.0 C (104.0 F)
Coldest night (TNn)
The coldest night of the year at Saint Marys College, 1942 to 1981. The record is -10.0 C (14.0 F) in 1972, marked on the chart; the median year is -5.6 C (21.9 F).
Coldest night (TNn) at Saint Marys College by year
Year
Coldest night (TNn)
1942
-1.7 C (28.9 F)
1943
-5.0 C (23.0 F)
1944
-5.6 C (21.9 F)
1945
-5.6 C (21.9 F)
1946
-3.9 C (25.0 F)
1947
-5.6 C (21.9 F)
1948
-7.2 C (19.0 F)
1949
-7.2 C (19.0 F)
1950
-7.2 C (19.0 F)
1951
-4.4 C (24.1 F)
1952
-5.0 C (23.0 F)
1953
-3.9 C (25.0 F)
1954
-5.6 C (21.9 F)
1955
-4.4 C (24.1 F)
1956
-5.6 C (21.9 F)
1957
-5.6 C (21.9 F)
1958
-6.1 C (21.0 F)
1959
-5.0 C (23.0 F)
1960
-7.8 C (18.0 F)
1961
-7.2 C (19.0 F)
1962
-7.2 C (19.0 F)
1963
-6.7 C (19.9 F)
1964
-3.9 C (25.0 F)
1965
-6.7 C (19.9 F)
1966
-5.6 C (21.9 F)
1967
-6.1 C (21.0 F)
1968
-6.7 C (19.9 F)
1969
-3.9 C (25.0 F)
1970
-5.0 C (23.0 F)
1971
-6.1 C (21.0 F)
1972
-10.0 C (14.0 F)
1973
-6.1 C (21.0 F)
1974
-4.4 C (24.1 F)
1975
-6.7 C (19.9 F)
1976
-6.7 C (19.9 F)
1977
-4.4 C (24.1 F)
1978
-5.6 C (21.9 F)
1979
-3.9 C (25.0 F)
1980
-3.3 C (26.1 F)
1981
-1.1 C (30.0 F)
Wettest day (Rx1day)
The wettest day of the year at Saint Marys College, 1942 to 1981. The record is 213.4 mm (8.4 in) in 1962, marked on the chart; the median year is 67.8 mm (2.7 in).
Wettest day (Rx1day) at Saint Marys College by year
Year
Wettest day (Rx1day)
1942
45.2 mm (1.8 in)
1943
58.4 mm (2.3 in)
1944
50.8 mm (2.0 in)
1945
96.5 mm (3.8 in)
1946
72.4 mm (2.9 in)
1947
43.9 mm (1.7 in)
1948
31.0 mm (1.2 in)
1949
43.7 mm (1.7 in)
1950
138.4 mm (5.4 in)
1951
60.5 mm (2.4 in)
1952
88.6 mm (3.5 in)
1953
50.3 mm (2.0 in)
1954
67.8 mm (2.7 in)
1955
114.3 mm (4.5 in)
1956
67.8 mm (2.7 in)
1957
75.4 mm (3.0 in)
1958
86.4 mm (3.4 in)
1959
73.4 mm (2.9 in)
1960
59.7 mm (2.4 in)
1961
46.7 mm (1.8 in)
1962
213.4 mm (8.4 in)
1963
73.2 mm (2.9 in)
1964
86.1 mm (3.4 in)
1965
50.8 mm (2.0 in)
1966
36.8 mm (1.4 in)
1967
140.5 mm (5.5 in)
1968
74.2 mm (2.9 in)
1969
69.1 mm (2.7 in)
1970
89.4 mm (3.5 in)
1971
51.8 mm (2.0 in)
1972
39.9 mm (1.6 in)
1973
64.5 mm (2.5 in)
1974
83.6 mm (3.3 in)
1975
58.4 mm (2.3 in)
1976
50.8 mm (2.0 in)
1977
82.0 mm (3.2 in)
1978
43.4 mm (1.7 in)
1979
95.0 mm (3.7 in)
1980
57.2 mm (2.3 in)
1981
79.0 mm (3.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Saint Marys College, 1942 to 1981. The record is 357.9 mm (14.1 in) in 1955, marked on the chart; the median year is 126.4 mm (5.0 in).
Wettest five days (Rx5day) at Saint Marys College by year
Year
Wettest five days (Rx5day)
1942
59.7 mm (2.4 in)
1943
164.2 mm (6.5 in)
1944
91.2 mm (3.6 in)
1945
169.4 mm (6.7 in)
1946
112.0 mm (4.4 in)
1947
57.9 mm (2.3 in)
1948
52.4 mm (2.1 in)
1949
67.9 mm (2.7 in)
1950
233.6 mm (9.2 in)
1951
151.3 mm (6.0 in)
1952
183.1 mm (7.2 in)
1953
65.8 mm (2.6 in)
1954
108.8 mm (4.3 in)
1955
357.9 mm (14.1 in)
1956
91.7 mm (3.6 in)
1957
106.6 mm (4.2 in)
1958
177.6 mm (7.0 in)
1959
98.8 mm (3.9 in)
1960
99.8 mm (3.9 in)
1961
124.5 mm (4.9 in)
1962
351.1 mm (13.8 in)
1963
207.3 mm (8.2 in)
1964
176.1 mm (6.9 in)
1965
123.7 mm (4.9 in)
1966
80.0 mm (3.1 in)
1967
221.0 mm (8.7 in)
1968
90.5 mm (3.6 in)
1969
176.0 mm (6.9 in)
1970
145.9 mm (5.7 in)
1971
76.3 mm (3.0 in)
1972
104.4 mm (4.1 in)
1973
174.8 mm (6.9 in)
1974
136.9 mm (5.4 in)
1975
100.3 mm (3.9 in)
1976
73.6 mm (2.9 in)
1977
128.2 mm (5.0 in)
1978
141.4 mm (5.6 in)
1979
174.8 mm (6.9 in)
1980
161.0 mm (6.3 in)
1981
159.8 mm (6.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Saint Marys College, 1942 to 1981. The record is 163 days in 1979, marked on the chart; the median year is 112 days.
Longest dry spell (CDD) at Saint Marys College by year
Year
Longest dry spell (CDD)
1942
9 days
1943
140 days
1944
141 days
1945
147 days
1946
129 days
1947
114 days
1948
133 days
1949
61 days
1950
97 days
1951
103 days
1952
135 days
1953
57 days
1954
74 days
1955
160 days
1956
130 days
1957
128 days
1958
56 days
1959
119 days
1960
133 days
1961
76 days
1962
91 days
1963
92 days
1964
104 days
1965
94 days
1966
52 days
1967
107 days
1968
85 days
1969
122 days
1970
132 days
1971
120 days
1972
108 days
1973
159 days
1974
109 days
1975
51 days
1976
125 days
1977
119 days
1978
135 days
1979
163 days
1980
101 days
1981
74 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
36 years with a frost
Across 36 years with a frost, the median last spring frost at Saint Marys College falls on 5 April and the median first autumn frost on 13 November, which leaves a median of 225 days between them.
Fitted over all years, the growing season changes by -5.5 days per decade at this station.
Frost dates and growing season at Saint Marys College
Measure
Median, all years
Earliest period
Recent period (1949 to 1980)
Recent against earliest
Fitted trend
Last spring frost
5 April
n/a
11 April
n/a
+6.6 days per decade
First autumn frost
13 November
n/a
13 November
n/a
+1.1 days per decade
Growing days
225 days
n/a
224 days
n/a
-5.5 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
38 years, 1943 to 1980
A day with at least 64.7 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 205.1 mm (8.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Saint Marys College: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
64.7 mm (2.5 in)
5 years
91.5 mm (3.6 in)
10 years
112.9 mm (4.4 in)
25 years
145.0 mm (5.7 in)
50 years
173.0 mm (6.8 in)
Longer than the 38 years of record
100 years
205.1 mm (8.1 in)
Longer than the 38 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, 38 years of values from 1943 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: 213.4 mm (8.4 in) in 1962; 140.5 mm (5.5 in) in 1967; 138.4 mm (5.4 in) in 1950.
Download the Data
Data for Saint Marys College standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Saint Marys College 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.