Record envelope, standing records and threshold days for St Augustine (USC00087812), Florida, United States, with 82 years of record.
Key Facts for St Augustine
St Augustine (USC00087812) is a weather station in Florida, United States at 29.88 latitude and -81.33 longitude, 6 m (20 ft) above sea level.
The station reports from 1892 to 1973, 82 years of record.
1,464 records set at St Augustine still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
St Augustine tied a daily record low minimum temperature of -1.7 C (28.9 F) on 17 February 1973.
About the Station
Location: Florida, United States, 29.88 latitude, -81.33 longitude.
Elevation: 6 m (20 ft).
Period of record: 1892 to 1973, 82 years.
Eligible elements: tmax, tmin, 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 St Augustine. 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 St Augustine, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
30.6 C (87.1 F)
-7.8 C (18.0 F)
n/a
n/a
Feb
32.2 C (90.0 F)
-8.9 C (16.0 F)
n/a
n/a
Mar
34.4 C (93.9 F)
-3.3 C (26.1 F)
n/a
n/a
Apr
35.6 C (96.1 F)
0.6 C (33.1 F)
n/a
n/a
May
37.2 C (99.0 F)
6.1 C (43.0 F)
n/a
n/a
Jun
40.0 C (104.0 F)
12.8 C (55.0 F)
n/a
n/a
Jul
38.3 C (100.9 F)
15.6 C (60.1 F)
n/a
n/a
Aug
38.9 C (102.0 F)
15.0 C (59.0 F)
n/a
n/a
Sep
37.8 C (100.0 F)
10.6 C (51.1 F)
n/a
n/a
Oct
36.7 C (98.1 F)
2.8 C (37.0 F)
n/a
n/a
Nov
33.3 C (91.9 F)
-3.9 C (25.0 F)
n/a
n/a
Dec
31.7 C (89.1 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 St Augustine still stand. 1911 holds the most, with 63.
Standing records at St Augustine by the year they were set
Year set
Standing records
1892
14
1893
27
1894
18
1895
33
1900
15
1901
39
1902
24
1903
30
1904
11
1905
16
1906
16
1907
18
1908
15
1909
18
1910
20
1911
63
1912
35
1913
44
1914
25
1915
37
1916
17
1917
19
1918
27
1919
18
1920
37
1921
15
1922
13
1923
9
1924
29
1925
32
1926
6
1927
24
1928
10
1929
15
1930
11
1931
15
1932
30
1933
13
1934
17
1935
16
1936
13
1937
22
1938
19
1939
16
1940
27
1941
3
1942
19
1943
13
1944
18
1945
15
1946
9
1947
10
1948
13
1949
6
1950
10
1951
11
1952
6
1953
19
1954
26
1955
19
1956
14
1957
16
1958
12
1959
7
1960
10
1961
22
1962
25
1963
21
1964
22
1965
15
1966
12
1967
23
1968
16
1969
8
1970
21
1971
22
1972
12
1973
1
All-Time Record Progression
2 new records
2 all-time records were set at St Augustine between 21 October 1941 and 18 September 1963. Each dot is a new record.
When St Augustine set new all-time records
Date
Kind
Detail
1941-10-21
Record daily precipitation
Record daily precipitation 238.8 mm (9.4 in)
1963-09-18
Record daily precipitation
Record daily precipitation 241.8 mm (9.5 in)
Wettest Day of Each Month
Sep: 241.8 mm (9.5 in)
The wettest day on record for each calendar month at St Augustine. The most was 241.8 mm (9.5 in) on 18 September 1963.
Record daily precipitation for each month at St Augustine
Month
Record daily precipitation (mm)
Date
Jan
67.8 mm (2.7 in)
24 January 1948
Feb
236.2 mm (9.3 in)
2 February 1920
Mar
161.3 mm (6.4 in)
17 March 1960
Apr
84.8 mm (3.3 in)
7 April 1953
May
152.4 mm (6.0 in)
22 May 1906
Jun
152.7 mm (6.0 in)
24 June 1945
Jul
136.9 mm (5.4 in)
18 July 1961
Aug
129.8 mm (5.1 in)
14 August 1943
Sep
241.8 mm (9.5 in)
18 September 1963
Oct
238.8 mm (9.4 in)
21 October 1941
Nov
157.5 mm (6.2 in)
4 November 1894
Dec
98.6 mm (3.9 in)
1 December 1925
Period of Record Coverage
1892 to 1973
Complete yearUnder 90 percent of days
78 years of record at St Augustine, 1892 to 1973. 9 years have data for under 90 percent of days and are left out of rankings: 1892, 1900, 1926, 1928, 1930, 1949, 1964, 1972 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 58 complete years at St Augustine, 1893 to 1972. Blue stripes are years cooler than the station's own mean of 21.0 C (69.8 F); red stripes are warmer. The coolest year was 1895, at 19.8 C (67.7 F), and the warmest was 1911, at 22.5 C (72.6 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at St Augustine as warming stripes, 1893 to 1972
Year
Annual mean temperature
Difference from the station mean
1893
20.3 C
-0.74 C
1894
20.1 C
-0.89 C
1895
19.8 C
-1.19 C
1903
20.4 C
-0.68 C
1904
20.6 C
-0.44 C
1905
21.0 C
-0.08 C
1906
20.7 C
-0.31 C
1907
21.2 C
+0.19 C
1908
21.2 C
+0.14 C
1909
21.3 C
+0.23 C
1910
20.0 C
-0.99 C
1911
22.5 C
+1.51 C
1912
21.4 C
+0.34 C
1913
21.4 C
+0.39 C
1914
20.8 C
-0.25 C
1915
21.1 C
+0.08 C
1917
20.8 C
-0.20 C
1918
21.0 C
-0.06 C
1919
21.4 C
+0.40 C
1920
20.5 C
-0.49 C
1921
21.7 C
+0.69 C
1922
21.6 C
+0.61 C
1923
21.4 C
+0.41 C
1925
21.7 C
+0.70 C
1929
21.3 C
+0.28 C
1931
20.6 C
-0.42 C
1932
21.2 C
+0.17 C
1933
21.1 C
+0.11 C
1934
21.2 C
+0.17 C
1935
21.3 C
+0.28 C
1936
21.5 C
+0.43 C
1937
21.3 C
+0.22 C
1938
21.5 C
+0.45 C
1939
21.8 C
+0.79 C
1940
19.9 C
-1.12 C
1941
20.8 C
-0.28 C
1942
21.0 C
+0.01 C
1944
21.1 C
+0.02 C
1946
21.6 C
+0.58 C
1947
20.8 C
-0.19 C
1950
21.4 C
+0.39 C
1951
21.6 C
+0.60 C
1952
21.3 C
+0.31 C
1953
21.7 C
+0.68 C
1954
21.2 C
+0.18 C
1955
21.0 C
-0.05 C
1957
21.5 C
+0.50 C
1958
20.2 C
-0.81 C
1959
21.1 C
+0.07 C
1961
20.9 C
-0.09 C
1962
20.7 C
-0.33 C
1963
20.2 C
-0.82 C
1965
20.9 C
-0.12 C
1966
20.2 C
-0.85 C
1967
20.8 C
-0.23 C
1969
20.3 C
-0.72 C
1971
21.0 C
-0.05 C
1972
21.3 C
+0.26 C
The fitted trend in annual mean temperature here over 1893 to 1972 is 0.01 C (-0.05 to 0.08) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.03 F (-0.09 to 0.14) per decade. The slope is a straight line fitted to 58 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at St Augustine
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.01 C (-0.05 to 0.08) per decade
0.03 F (-0.09 to 0.14) per decade
1893 to 1972
58
Not clearly different from zero
Mean daily maximum
0.09 C (0.01 to 0.18) per decade
0.17 F (0.01 to 0.32) per decade
1893 to 1972
58
Rise
Mean daily minimum
-0.06 C (-0.14 to 0.01) per decade
-0.11 F (-0.24 to 0.02) per decade
1893 to 1972
58
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
1892 to 1973
Yearly extremes at St Augustine: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1914
36.1 C (97.0 F)
78
Coldest night (TNn)
-8.9 C (16.0 F)
1894
-3.3 C (26.1 F)
78
Wettest day (Rx1day)
241.8 mm (9.5 in)
1963
85.2 mm (3.4 in)
78
Wettest five days (Rx5day)
516.7 mm (20.3 in)
1920
153.2 mm (6.0 in)
78
Longest dry spell (CDD)
53 days
1956
22 days
78
Hottest day (TXx)
The hottest day of the year at St Augustine, 1892 to 1973. The record is 40.0 C (104.0 F) in 1914, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at St Augustine by year
Year
Hottest day (TXx)
1892
34.4 C (93.9 F)
1893
34.4 C (93.9 F)
1894
34.4 C (93.9 F)
1895
35.0 C (95.0 F)
1900
38.3 C (100.9 F)
1901
35.0 C (95.0 F)
1902
36.7 C (98.1 F)
1903
36.1 C (97.0 F)
1904
36.1 C (97.0 F)
1905
35.6 C (96.1 F)
1906
35.6 C (96.1 F)
1907
35.6 C (96.1 F)
1908
35.6 C (96.1 F)
1909
36.1 C (97.0 F)
1910
35.0 C (95.0 F)
1911
38.9 C (102.0 F)
1912
38.3 C (100.9 F)
1913
38.3 C (100.9 F)
1914
40.0 C (104.0 F)
1915
37.8 C (100.0 F)
1916
34.4 C (93.9 F)
1917
35.6 C (96.1 F)
1918
36.7 C (98.1 F)
1919
36.1 C (97.0 F)
1920
36.1 C (97.0 F)
1921
37.8 C (100.0 F)
1922
35.0 C (95.0 F)
1923
35.6 C (96.1 F)
1924
35.0 C (95.0 F)
1925
36.1 C (97.0 F)
1926
35.0 C (95.0 F)
1927
37.8 C (100.0 F)
1928
35.0 C (95.0 F)
1929
35.6 C (96.1 F)
1930
33.3 C (91.9 F)
1931
36.1 C (97.0 F)
1932
35.6 C (96.1 F)
1933
36.7 C (98.1 F)
1934
36.1 C (97.0 F)
1935
36.1 C (97.0 F)
1936
36.7 C (98.1 F)
1937
36.7 C (98.1 F)
1938
37.8 C (100.0 F)
1939
36.7 C (98.1 F)
1940
36.7 C (98.1 F)
1941
37.2 C (99.0 F)
1942
38.3 C (100.9 F)
1943
36.7 C (98.1 F)
1944
39.4 C (102.9 F)
1945
36.1 C (97.0 F)
1946
36.1 C (97.0 F)
1947
35.6 C (96.1 F)
1948
36.7 C (98.1 F)
1949
35.0 C (95.0 F)
1950
38.9 C (102.0 F)
1951
36.7 C (98.1 F)
1952
37.8 C (100.0 F)
1953
37.2 C (99.0 F)
1954
38.9 C (102.0 F)
1955
36.7 C (98.1 F)
1956
37.2 C (99.0 F)
1957
35.6 C (96.1 F)
1958
36.1 C (97.0 F)
1959
36.1 C (97.0 F)
1960
36.1 C (97.0 F)
1961
36.7 C (98.1 F)
1962
35.6 C (96.1 F)
1963
38.3 C (100.9 F)
1964
36.7 C (98.1 F)
1965
36.1 C (97.0 F)
1966
34.4 C (93.9 F)
1967
36.7 C (98.1 F)
1968
36.7 C (98.1 F)
1969
36.7 C (98.1 F)
1970
37.2 C (99.0 F)
1971
36.7 C (98.1 F)
1972
38.9 C (102.0 F)
1973
31.1 C (88.0 F)
Coldest night (TNn)
The coldest night of the year at St Augustine, 1892 to 1973. The record is -8.9 C (16.0 F) in 1894, marked on the chart; the median year is -3.3 C (26.1 F).
Coldest night (TNn) at St Augustine by year
Year
Coldest night (TNn)
1892
-1.1 C (30.0 F)
1893
-3.3 C (26.1 F)
1894
-8.9 C (16.0 F)
1895
-8.9 C (16.0 F)
1900
5.6 C (42.1 F)
1901
-5.6 C (21.9 F)
1902
-3.9 C (25.0 F)
1903
-3.3 C (26.1 F)
1904
-2.2 C (28.0 F)
1905
-7.8 C (18.0 F)
1906
-4.4 C (24.1 F)
1907
0.0 C (32.0 F)
1908
-2.2 C (28.0 F)
1909
-7.2 C (19.0 F)
1910
-3.9 C (25.0 F)
1911
-2.8 C (27.0 F)
1912
-2.2 C (28.0 F)
1913
0.0 C (32.0 F)
1914
-3.3 C (26.1 F)
1915
-1.1 C (30.0 F)
1916
-1.7 C (28.9 F)
1917
-7.8 C (18.0 F)
1918
-5.6 C (21.9 F)
1919
-2.2 C (28.0 F)
1920
-2.2 C (28.0 F)
1921
1.1 C (34.0 F)
1922
-1.7 C (28.9 F)
1923
-1.7 C (28.9 F)
1924
-2.8 C (27.0 F)
1925
-2.8 C (27.0 F)
1926
-2.2 C (28.0 F)
1927
-5.0 C (23.0 F)
1928
-6.7 C (19.9 F)
1929
-2.8 C (27.0 F)
1930
-1.1 C (30.0 F)
1931
-2.2 C (28.0 F)
1932
-3.3 C (26.1 F)
1933
-2.8 C (27.0 F)
1934
-5.0 C (23.0 F)
1935
-4.4 C (24.1 F)
1936
-3.3 C (26.1 F)
1937
-5.0 C (23.0 F)
1938
-3.9 C (25.0 F)
1939
-0.6 C (30.9 F)
1940
-7.2 C (19.0 F)
1941
-2.2 C (28.0 F)
1942
-3.3 C (26.1 F)
1943
-4.4 C (24.1 F)
1944
-2.2 C (28.0 F)
1945
-1.1 C (30.0 F)
1946
1.1 C (34.0 F)
1947
-3.3 C (26.1 F)
1948
-5.6 C (21.9 F)
1949
-1.1 C (30.0 F)
1950
-3.9 C (25.0 F)
1951
-2.2 C (28.0 F)
1952
-2.2 C (28.0 F)
1953
-2.2 C (28.0 F)
1954
-2.8 C (27.0 F)
1955
-5.0 C (23.0 F)
1956
-2.8 C (27.0 F)
1957
-5.6 C (21.9 F)
1958
-5.0 C (23.0 F)
1959
-4.4 C (24.1 F)
1960
-3.9 C (25.0 F)
1961
-5.0 C (23.0 F)
1962
-8.9 C (16.0 F)
1963
-5.0 C (23.0 F)
1964
-5.0 C (23.0 F)
1965
-3.9 C (25.0 F)
1966
-7.2 C (19.0 F)
1967
-5.6 C (21.9 F)
1968
-5.6 C (21.9 F)
1969
-1.7 C (28.9 F)
1970
-6.7 C (19.9 F)
1971
-7.2 C (19.0 F)
1972
-1.1 C (30.0 F)
1973
-1.7 C (28.9 F)
Wettest day (Rx1day)
The wettest day of the year at St Augustine, 1892 to 1973. The record is 241.8 mm (9.5 in) in 1963, marked on the chart; the median year is 85.2 mm (3.4 in).
Wettest day (Rx1day) at St Augustine by year
Year
Wettest day (Rx1day)
1892
47.0 mm (1.9 in)
1893
111.8 mm (4.4 in)
1894
157.5 mm (6.2 in)
1895
50.8 mm (2.0 in)
1900
59.9 mm (2.4 in)
1901
76.7 mm (3.0 in)
1902
72.9 mm (2.9 in)
1903
68.6 mm (2.7 in)
1904
87.6 mm (3.4 in)
1905
76.2 mm (3.0 in)
1906
152.4 mm (6.0 in)
1907
52.3 mm (2.1 in)
1908
110.5 mm (4.4 in)
1909
71.1 mm (2.8 in)
1910
127.0 mm (5.0 in)
1911
49.5 mm (1.9 in)
1912
96.5 mm (3.8 in)
1913
91.4 mm (3.6 in)
1914
73.7 mm (2.9 in)
1915
76.2 mm (3.0 in)
1916
45.2 mm (1.8 in)
1917
58.2 mm (2.3 in)
1918
53.3 mm (2.1 in)
1919
90.4 mm (3.6 in)
1920
236.2 mm (9.3 in)
1921
68.6 mm (2.7 in)
1922
61.7 mm (2.4 in)
1923
66.0 mm (2.6 in)
1924
124.5 mm (4.9 in)
1925
98.6 mm (3.9 in)
1926
76.7 mm (3.0 in)
1927
43.2 mm (1.7 in)
1928
65.0 mm (2.6 in)
1929
57.4 mm (2.3 in)
1930
66.0 mm (2.6 in)
1931
92.2 mm (3.6 in)
1932
139.7 mm (5.5 in)
1933
108.0 mm (4.3 in)
1934
68.8 mm (2.7 in)
1935
59.7 mm (2.4 in)
1936
80.0 mm (3.1 in)
1937
106.2 mm (4.2 in)
1938
115.3 mm (4.5 in)
1939
44.5 mm (1.8 in)
1940
116.1 mm (4.6 in)
1941
238.8 mm (9.4 in)
1942
68.6 mm (2.7 in)
1943
129.8 mm (5.1 in)
1944
183.6 mm (7.2 in)
1945
167.6 mm (6.6 in)
1946
82.8 mm (3.3 in)
1947
71.6 mm (2.8 in)
1948
101.1 mm (4.0 in)
1949
227.1 mm (8.9 in)
1950
71.9 mm (2.8 in)
1951
44.7 mm (1.8 in)
1952
78.7 mm (3.1 in)
1953
140.0 mm (5.5 in)
1954
122.7 mm (4.8 in)
1955
52.3 mm (2.1 in)
1956
76.2 mm (3.0 in)
1957
96.5 mm (3.8 in)
1958
91.9 mm (3.6 in)
1959
127.3 mm (5.0 in)
1960
161.3 mm (6.4 in)
1961
139.7 mm (5.5 in)
1962
77.0 mm (3.0 in)
1963
241.8 mm (9.5 in)
1964
134.6 mm (5.3 in)
1965
48.8 mm (1.9 in)
1966
75.4 mm (3.0 in)
1967
104.1 mm (4.1 in)
1968
105.2 mm (4.1 in)
1969
137.9 mm (5.4 in)
1970
140.2 mm (5.5 in)
1971
100.8 mm (4.0 in)
1972
125.0 mm (4.9 in)
1973
43.4 mm (1.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at St Augustine, 1892 to 1973. The record is 516.7 mm (20.3 in) in 1920, marked on the chart; the median year is 153.2 mm (6.0 in).
Wettest five days (Rx5day) at St Augustine by year
Year
Wettest five days (Rx5day)
1892
132.1 mm (5.2 in)
1893
137.2 mm (5.4 in)
1894
132.1 mm (5.2 in)
1895
83.7 mm (3.3 in)
1900
112.5 mm (4.4 in)
1901
165.8 mm (6.5 in)
1902
135.0 mm (5.3 in)
1903
153.9 mm (6.1 in)
1904
148.8 mm (5.9 in)
1905
135.7 mm (5.3 in)
1906
221.5 mm (8.7 in)
1907
85.9 mm (3.4 in)
1908
165.1 mm (6.5 in)
1909
111.3 mm (4.4 in)
1910
173.8 mm (6.8 in)
1911
101.1 mm (4.0 in)
1912
231.9 mm (9.1 in)
1913
115.6 mm (4.6 in)
1914
112.2 mm (4.4 in)
1915
169.7 mm (6.7 in)
1916
109.2 mm (4.3 in)
1917
106.4 mm (4.2 in)
1918
95.7 mm (3.8 in)
1919
159.5 mm (6.3 in)
1920
516.7 mm (20.3 in)
1921
187.8 mm (7.4 in)
1922
180.9 mm (7.1 in)
1923
97.6 mm (3.8 in)
1924
177.3 mm (7.0 in)
1925
161.1 mm (6.3 in)
1926
181.1 mm (7.1 in)
1927
81.5 mm (3.2 in)
1928
115.5 mm (4.5 in)
1929
110.3 mm (4.3 in)
1930
89.1 mm (3.5 in)
1931
117.6 mm (4.6 in)
1932
185.2 mm (7.3 in)
1933
173.5 mm (6.8 in)
1934
129.5 mm (5.1 in)
1935
117.7 mm (4.6 in)
1936
163.8 mm (6.4 in)
1937
198.5 mm (7.8 in)
1938
132.3 mm (5.2 in)
1939
99.8 mm (3.9 in)
1940
136.2 mm (5.4 in)
1941
385.1 mm (15.2 in)
1942
102.3 mm (4.0 in)
1943
154.2 mm (6.1 in)
1944
218.4 mm (8.6 in)
1945
167.9 mm (6.6 in)
1946
129.5 mm (5.1 in)
1947
116.4 mm (4.6 in)
1948
214.3 mm (8.4 in)
1949
358.5 mm (14.1 in)
1950
164.9 mm (6.5 in)
1951
170.0 mm (6.7 in)
1952
198.3 mm (7.8 in)
1953
221.2 mm (8.7 in)
1954
156.5 mm (6.2 in)
1955
101.3 mm (4.0 in)
1956
130.1 mm (5.1 in)
1957
159.5 mm (6.3 in)
1958
141.7 mm (5.6 in)
1959
143.7 mm (5.7 in)
1960
236.5 mm (9.3 in)
1961
156.0 mm (6.1 in)
1962
197.0 mm (7.8 in)
1963
317.1 mm (12.5 in)
1964
233.7 mm (9.2 in)
1965
99.5 mm (3.9 in)
1966
129.0 mm (5.1 in)
1967
129.3 mm (5.1 in)
1968
227.9 mm (9.0 in)
1969
228.4 mm (9.0 in)
1970
184.1 mm (7.2 in)
1971
152.4 mm (6.0 in)
1972
178.0 mm (7.0 in)
1973
68.5 mm (2.7 in)
Longest dry spell (CDD)
The longest dry spell of the year at St Augustine, 1892 to 1973. The record is 53 days in 1956, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at St Augustine by year
Year
Longest dry spell (CDD)
1892
17 days
1893
13 days
1894
20 days
1895
29 days
1900
16 days
1901
21 days
1902
22 days
1903
21 days
1904
22 days
1905
21 days
1906
46 days
1907
21 days
1908
23 days
1909
35 days
1910
25 days
1911
52 days
1912
16 days
1913
29 days
1914
25 days
1915
34 days
1916
25 days
1917
35 days
1918
25 days
1919
23 days
1920
24 days
1921
26 days
1922
34 days
1923
42 days
1924
17 days
1925
20 days
1926
13 days
1927
37 days
1928
16 days
1929
19 days
1930
16 days
1931
18 days
1932
29 days
1933
23 days
1934
21 days
1935
20 days
1936
22 days
1937
22 days
1938
27 days
1939
18 days
1940
37 days
1941
28 days
1942
22 days
1943
23 days
1944
20 days
1945
25 days
1946
24 days
1947
14 days
1948
17 days
1949
17 days
1950
36 days
1951
32 days
1952
18 days
1953
15 days
1954
23 days
1955
38 days
1956
53 days
1957
19 days
1958
17 days
1959
16 days
1960
25 days
1961
20 days
1962
24 days
1963
19 days
1964
11 days
1965
19 days
1966
29 days
1967
46 days
1968
42 days
1969
25 days
1970
21 days
1971
17 days
1972
18 days
1973
10 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
33 years with a frost
Across 33 years with a frost, the median last spring frost at St Augustine falls on 14 February and the median first autumn frost on 9 December, which leaves a median of 291 days between them.
Fitted over all years, the growing season changes by +0.1 days per decade at this station.
Frost dates and growing season at St Augustine
Measure
Median, all years
Earliest period
Recent period (1903 to 1972)
Recent against earliest
Fitted trend
Last spring frost
14 February
n/a
14 February
n/a
-0.7 days per decade
First autumn frost
9 December
n/a
9 December
n/a
-0.6 days per decade
Growing days
291 days
n/a
291 days
n/a
+0.1 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
68 years, 1901 to 1972
A day with at least 90.7 mm (3.6 in) of rain is expected about once in 2 years. A day with at least 276.5 mm (10.9 in) of rain is expected about once in 100 years.
Rainfall return levels at St Augustine: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
90.7 mm (3.6 in)
5 years
131.4 mm (5.2 in)
10 years
161.7 mm (6.4 in)
25 years
204.1 mm (8.0 in)
50 years
238.9 mm (9.4 in)
100 years
276.5 mm (10.9 in)
Longer than the 68 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, 68 years of values from 1901 to 1972.
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: 241.8 mm (9.5 in) in 1963; 238.8 mm (9.4 in) in 1941; 236.2 mm (9.3 in) in 1920.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for St Augustine standing records by year: CSV or JSON. Field meanings are on the data page.
Data for St Augustine 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.