Record envelope, standing records and threshold days for Alvin (USC00410204), Texas, United States, with 113 years of record.
Key Facts for Alvin
Alvin (USC00410204) is a weather station in Texas, United States at 29.37 latitude and -95.23 longitude, 9 m (28 ft) above sea level.
The station reports from 1898 to 2010, 113 years of record.
1,464 records set at Alvin still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Alvin set a daily record low minimum temperature of 2.8 C (37.0 F) on 8 November 2010.
About the Station
Location: Texas, United States, 29.37 latitude, -95.23 longitude.
Elevation: 9 m (28 ft).
Period of record: 1898 to 2010, 113 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 Alvin. 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 Alvin, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
30.0 C (86.0 F)
-10.0 C (14.0 F)
n/a
n/a
Feb
30.0 C (86.0 F)
-6.7 C (19.9 F)
n/a
n/a
Mar
34.4 C (93.9 F)
-5.6 C (21.9 F)
n/a
n/a
Apr
35.6 C (96.1 F)
-1.1 C (30.0 F)
n/a
n/a
May
40.0 C (104.0 F)
7.8 C (46.0 F)
n/a
n/a
Jun
40.0 C (104.0 F)
12.2 C (54.0 F)
n/a
n/a
Jul
42.2 C (108.0 F)
15.6 C (60.1 F)
n/a
n/a
Aug
37.8 C (100.0 F)
15.6 C (60.1 F)
n/a
n/a
Sep
37.2 C (99.0 F)
5.0 C (41.0 F)
n/a
n/a
Oct
34.4 C (93.9 F)
1.1 C (34.0 F)
n/a
n/a
Nov
32.2 C (90.0 F)
-6.7 C (19.9 F)
n/a
n/a
Dec
30.0 C (86.0 F)
-13.3 C (8.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Alvin still stand. 2000 holds the most, with 99.
Standing records at Alvin by the year they were set
Year set
Standing records
1903
39
1904
32
1911
68
1912
33
1913
46
1914
70
1915
29
1965
8
1966
28
1967
42
1968
24
1969
38
1970
28
1971
42
1972
36
1973
35
1974
12
1975
22
1976
25
1977
35
1978
32
1979
23
1980
30
1981
17
1982
36
1983
32
1984
33
1985
22
1986
28
1987
21
1988
28
1989
50
1990
27
1991
30
1992
17
1993
2
1995
14
1996
43
1997
21
1998
26
1999
14
2000
99
2003
1
2004
22
2005
13
2006
15
2007
24
2008
17
2009
24
2010
11
All-Time Record Progression
8 new records
8 all-time records were set at Alvin between 11 March 1932 and 15 July 2000. Each dot is a new record.
When Alvin set new all-time records
Date
Kind
Detail
1932-03-11
Record daily snowfall
Record daily snowfall 7.6 cm (3.0 in)
1960-02-12
Record daily snowfall
Record daily snowfall 10.2 cm (4.0 in)
1973-06-12
Record daily precipitation
Record daily precipitation 320.0 mm (12.6 in)
1979-07-26
Record daily precipitation
Record daily precipitation 654.1 mm (25.8 in)
1997-08-15
Record high minimum temperature
Record high minimum temperature 27.8 C (82.0 F)
2000-05-29
Record high maximum temperature
Record high maximum temperature 40.0 C (104.0 F)
2000-07-12
Record high maximum temperature
Record high maximum temperature 41.7 C (107.1 F)
2000-07-15
Record high maximum temperature
Record high maximum temperature 42.2 C (108.0 F)
Wettest Day of Each Month
Jul: 654.1 mm (25.8 in)
The wettest day on record for each calendar month at Alvin. The most was 654.1 mm (25.8 in) on 26 July 1979.
Record daily precipitation for each month at Alvin
Month
Record daily precipitation (mm)
Date
Jan
106.7 mm (4.2 in)
19 January 1968
Feb
85.1 mm (3.4 in)
24 February 1985
Mar
190.5 mm (7.5 in)
17 March 1957
Apr
129.0 mm (5.1 in)
27 April 1900
May
152.4 mm (6.0 in)
28 May 1952
Jun
320.0 mm (12.6 in)
12 June 1973
Jul
654.1 mm (25.8 in)
26 July 1979
Aug
299.0 mm (11.8 in)
15 August 2002
Sep
236.2 mm (9.3 in)
13 September 2008
Oct
203.2 mm (8.0 in)
13 October 1906
Nov
158.8 mm (6.3 in)
25 November 1940
Dec
205.7 mm (8.1 in)
10 December 1922
Period of Record Coverage
1903 to 2010
Complete yearUnder 90 percent of days
50 years of record at Alvin, 1903 to 2010. 19 years have data for under 90 percent of days and are left out of rankings: 1903, 1904, 1915, 1965, 1972, 1973, 1976, 1989 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 27 complete years at Alvin, 1911 to 2009. Blue stripes are years cooler than the station's own mean of 19.9 C (67.9 F); red stripes are warmer. The coolest year was 1914, at 17.7 C (63.9 F), and the warmest was 1911, at 20.9 C (69.6 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Alvin as warming stripes, 1911 to 2009
Year
Annual mean temperature
Difference from the station mean
1911
20.9 C
+0.95 C
1912
19.4 C
-0.59 C
1913
19.2 C
-0.74 C
1914
17.7 C
-2.22 C
1966
19.6 C
-0.39 C
1967
20.4 C
+0.48 C
1968
19.6 C
-0.37 C
1969
20.4 C
+0.45 C
1971
20.7 C
+0.75 C
1978
19.7 C
-0.27 C
1979
18.8 C
-1.14 C
1980
19.7 C
-0.26 C
1981
20.0 C
+0.03 C
1982
20.3 C
+0.32 C
1983
18.9 C
-1.02 C
1984
20.0 C
+0.04 C
1985
19.9 C
-0.07 C
1986
20.7 C
+0.76 C
1987
19.8 C
-0.19 C
1988
19.8 C
-0.16 C
1992
20.3 C
+0.39 C
1996
20.8 C
+0.84 C
2004
20.7 C
+0.70 C
2006
20.6 C
+0.64 C
2007
20.0 C
+0.09 C
2008
20.4 C
+0.45 C
2009
20.4 C
+0.49 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1898 to 2010
Yearly extremes at Alvin: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.2 C (108.0 F)
2000
36.1 C (97.0 F)
50
Coldest night (TNn)
-13.3 C (8.1 F)
1989
-4.4 C (24.1 F)
50
Wettest day (Rx1day)
654.1 mm (25.8 in)
1979
96.0 mm (3.8 in)
111
Wettest five days (Rx5day)
692.9 mm (27.3 in)
1979
148.3 mm (5.8 in)
111
Longest dry spell (CDD)
50 days
1930
26 days
111
Hottest day (TXx)
The hottest day of the year at Alvin, 1898 to 2010. The record is 42.2 C (108.0 F) in 2000, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Alvin by year
Year
Hottest day (TXx)
1898
n/a
1900
n/a
1901
n/a
1902
n/a
1903
35.6 C (96.1 F)
1904
33.3 C (91.9 F)
1905
n/a
1906
n/a
1907
n/a
1908
n/a
1909
n/a
1910
n/a
1911
39.4 C (102.9 F)
1912
37.8 C (100.0 F)
1913
38.9 C (102.0 F)
1914
36.7 C (98.1 F)
1915
35.6 C (96.1 F)
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1920
n/a
1921
n/a
1922
n/a
1923
n/a
1924
n/a
1925
n/a
1926
n/a
1927
n/a
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
n/a
1958
n/a
1959
n/a
1960
n/a
1961
n/a
1962
n/a
1963
n/a
1964
n/a
1965
32.2 C (90.0 F)
1966
35.6 C (96.1 F)
1967
36.7 C (98.1 F)
1968
36.7 C (98.1 F)
1969
37.2 C (99.0 F)
1970
36.7 C (98.1 F)
1971
36.7 C (98.1 F)
1972
37.2 C (99.0 F)
1973
35.6 C (96.1 F)
1974
36.1 C (97.0 F)
1975
36.1 C (97.0 F)
1976
37.2 C (99.0 F)
1977
36.7 C (98.1 F)
1978
35.6 C (96.1 F)
1979
34.4 C (93.9 F)
1980
37.8 C (100.0 F)
1981
35.6 C (96.1 F)
1982
36.1 C (97.0 F)
1983
35.0 C (95.0 F)
1984
35.6 C (96.1 F)
1985
36.1 C (97.0 F)
1986
36.7 C (98.1 F)
1987
35.6 C (96.1 F)
1988
36.7 C (98.1 F)
1989
36.1 C (97.0 F)
1990
37.8 C (100.0 F)
1991
35.6 C (96.1 F)
1992
35.6 C (96.1 F)
1993
28.3 C (82.9 F)
1995
37.2 C (99.0 F)
1996
35.6 C (96.1 F)
1997
36.7 C (98.1 F)
1998
37.8 C (100.0 F)
1999
34.4 C (93.9 F)
2000
42.2 C (108.0 F)
2001
n/a
2002
n/a
2003
29.4 C (84.9 F)
2004
37.2 C (99.0 F)
2005
36.1 C (97.0 F)
2006
38.3 C (100.9 F)
2007
37.2 C (99.0 F)
2008
35.6 C (96.1 F)
2009
36.7 C (98.1 F)
2010
35.6 C (96.1 F)
Coldest night (TNn)
The coldest night of the year at Alvin, 1898 to 2010. The record is -13.3 C (8.1 F) in 1989, marked on the chart; the median year is -4.4 C (24.1 F).
Coldest night (TNn) at Alvin by year
Year
Coldest night (TNn)
1898
n/a
1900
n/a
1901
n/a
1902
n/a
1903
-1.1 C (30.0 F)
1904
-3.9 C (25.0 F)
1905
n/a
1906
n/a
1907
n/a
1908
n/a
1909
n/a
1910
n/a
1911
-10.0 C (14.0 F)
1912
-7.8 C (18.0 F)
1913
-5.0 C (23.0 F)
1914
-6.7 C (19.9 F)
1915
-6.1 C (21.0 F)
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1920
n/a
1921
n/a
1922
n/a
1923
n/a
1924
n/a
1925
n/a
1926
n/a
1927
n/a
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
n/a
1958
n/a
1959
n/a
1960
n/a
1961
n/a
1962
n/a
1963
n/a
1964
n/a
1965
1.7 C (35.1 F)
1966
-6.7 C (19.9 F)
1967
-3.9 C (25.0 F)
1968
-4.4 C (24.1 F)
1969
-3.9 C (25.0 F)
1970
-7.2 C (19.0 F)
1971
-3.3 C (26.1 F)
1972
-5.0 C (23.0 F)
1973
-6.1 C (21.0 F)
1974
-2.2 C (28.0 F)
1975
-4.4 C (24.1 F)
1976
-7.2 C (19.0 F)
1977
-7.2 C (19.0 F)
1978
-6.1 C (21.0 F)
1979
-8.3 C (17.1 F)
1980
-5.6 C (21.9 F)
1981
-6.7 C (19.9 F)
1982
-8.9 C (16.0 F)
1983
-11.1 C (12.0 F)
1984
-6.7 C (19.9 F)
1985
-8.3 C (17.1 F)
1986
-2.2 C (28.0 F)
1987
-2.8 C (27.0 F)
1988
-5.0 C (23.0 F)
1989
-13.3 C (8.1 F)
1990
0.6 C (33.1 F)
1991
-2.8 C (27.0 F)
1992
-3.3 C (26.1 F)
1993
-1.7 C (28.9 F)
1995
0.6 C (33.1 F)
1996
-6.1 C (21.0 F)
1997
-1.7 C (28.9 F)
1998
-3.3 C (26.1 F)
1999
-0.6 C (30.9 F)
2000
-2.2 C (28.0 F)
2001
n/a
2002
n/a
2003
-0.6 C (30.9 F)
2004
-3.3 C (26.1 F)
2005
0.0 C (32.0 F)
2006
-2.8 C (27.0 F)
2007
-4.4 C (24.1 F)
2008
-2.8 C (27.0 F)
2009
-5.0 C (23.0 F)
2010
-7.2 C (19.0 F)
Wettest day (Rx1day)
The wettest day of the year at Alvin, 1898 to 2010. The record is 654.1 mm (25.8 in) in 1979, marked on the chart; the median year is 96.0 mm (3.8 in).
Wettest day (Rx1day) at Alvin by year
Year
Wettest day (Rx1day)
1898
60.2 mm (2.4 in)
1900
220.2 mm (8.7 in)
1901
112.3 mm (4.4 in)
1902
174.2 mm (6.9 in)
1903
121.9 mm (4.8 in)
1904
83.6 mm (3.3 in)
1905
70.1 mm (2.8 in)
1906
203.2 mm (8.0 in)
1907
135.9 mm (5.4 in)
1908
109.0 mm (4.3 in)
1909
119.1 mm (4.7 in)
1910
85.3 mm (3.4 in)
1911
113.8 mm (4.5 in)
1912
139.2 mm (5.5 in)
1913
65.3 mm (2.6 in)
1914
91.4 mm (3.6 in)
1915
54.9 mm (2.2 in)
1916
83.1 mm (3.3 in)
1917
55.9 mm (2.2 in)
1918
71.1 mm (2.8 in)
1919
88.6 mm (3.5 in)
1920
90.9 mm (3.6 in)
1921
165.1 mm (6.5 in)
1922
205.7 mm (8.1 in)
1923
178.3 mm (7.0 in)
1924
121.2 mm (4.8 in)
1925
79.0 mm (3.1 in)
1926
83.8 mm (3.3 in)
1927
83.8 mm (3.3 in)
1928
114.3 mm (4.5 in)
1929
101.6 mm (4.0 in)
1930
101.6 mm (4.0 in)
1931
75.4 mm (3.0 in)
1932
152.4 mm (6.0 in)
1933
113.8 mm (4.5 in)
1934
62.2 mm (2.4 in)
1935
88.6 mm (3.5 in)
1936
82.6 mm (3.3 in)
1937
86.9 mm (3.4 in)
1938
63.5 mm (2.5 in)
1939
63.0 mm (2.5 in)
1940
158.8 mm (6.3 in)
1941
152.4 mm (6.0 in)
1942
94.0 mm (3.7 in)
1943
127.0 mm (5.0 in)
1944
109.2 mm (4.3 in)
1945
127.0 mm (5.0 in)
1946
111.8 mm (4.4 in)
1947
50.8 mm (2.0 in)
1948
72.1 mm (2.8 in)
1949
173.2 mm (6.8 in)
1950
85.9 mm (3.4 in)
1951
96.5 mm (3.8 in)
1952
152.4 mm (6.0 in)
1953
96.5 mm (3.8 in)
1954
57.2 mm (2.3 in)
1955
66.3 mm (2.6 in)
1956
50.8 mm (2.0 in)
1957
190.5 mm (7.5 in)
1958
53.3 mm (2.1 in)
1959
143.5 mm (5.6 in)
1960
196.9 mm (7.8 in)
1961
139.7 mm (5.5 in)
1962
83.8 mm (3.3 in)
1963
50.3 mm (2.0 in)
1964
122.2 mm (4.8 in)
1965
73.7 mm (2.9 in)
1966
66.0 mm (2.6 in)
1967
88.1 mm (3.5 in)
1968
185.4 mm (7.3 in)
1969
84.3 mm (3.3 in)
1970
78.7 mm (3.1 in)
1971
137.2 mm (5.4 in)
1972
144.8 mm (5.7 in)
1973
320.0 mm (12.6 in)
1974
96.5 mm (3.8 in)
1975
124.5 mm (4.9 in)
1976
73.7 mm (2.9 in)
1977
71.6 mm (2.8 in)
1978
71.1 mm (2.8 in)
1979
654.1 mm (25.8 in)
1980
97.8 mm (3.9 in)
1981
140.2 mm (5.5 in)
1982
96.0 mm (3.8 in)
1983
90.7 mm (3.6 in)
1984
133.4 mm (5.3 in)
1985
85.1 mm (3.4 in)
1986
74.7 mm (2.9 in)
1987
69.1 mm (2.7 in)
1988
151.1 mm (5.9 in)
1989
178.1 mm (7.0 in)
1990
93.5 mm (3.7 in)
1991
91.9 mm (3.6 in)
1992
91.4 mm (3.6 in)
1993
56.9 mm (2.2 in)
1995
121.9 mm (4.8 in)
1996
81.3 mm (3.2 in)
1997
116.8 mm (4.6 in)
1998
90.4 mm (3.6 in)
1999
24.1 mm (0.9 in)
2000
76.2 mm (3.0 in)
2001
129.3 mm (5.1 in)
2002
299.0 mm (11.8 in)
2003
65.5 mm (2.6 in)
2004
124.5 mm (4.9 in)
2005
68.3 mm (2.7 in)
2006
94.0 mm (3.7 in)
2007
98.0 mm (3.9 in)
2008
236.2 mm (9.3 in)
2009
101.6 mm (4.0 in)
2010
101.6 mm (4.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Alvin, 1898 to 2010. The record is 692.9 mm (27.3 in) in 1979, marked on the chart; the median year is 148.3 mm (5.8 in).
Wettest five days (Rx5day) at Alvin by year
Year
Wettest five days (Rx5day)
1898
77.0 mm (3.0 in)
1900
353.8 mm (13.9 in)
1901
151.2 mm (6.0 in)
1902
204.2 mm (8.0 in)
1903
132.1 mm (5.2 in)
1904
129.8 mm (5.1 in)
1905
172.8 mm (6.8 in)
1906
221.5 mm (8.7 in)
1907
137.4 mm (5.4 in)
1908
154.8 mm (6.1 in)
1909
119.1 mm (4.7 in)
1910
222.8 mm (8.8 in)
1911
168.2 mm (6.6 in)
1912
156.2 mm (6.1 in)
1913
202.5 mm (8.0 in)
1914
168.4 mm (6.6 in)
1915
77.5 mm (3.1 in)
1916
164.4 mm (6.5 in)
1917
57.2 mm (2.3 in)
1918
114.3 mm (4.5 in)
1919
130.3 mm (5.1 in)
1920
110.4 mm (4.3 in)
1921
275.3 mm (10.8 in)
1922
239.2 mm (9.4 in)
1923
313.0 mm (12.3 in)
1924
139.5 mm (5.5 in)
1925
124.7 mm (4.9 in)
1926
99.0 mm (3.9 in)
1927
86.3 mm (3.4 in)
1928
120.7 mm (4.8 in)
1929
128.3 mm (5.1 in)
1930
121.9 mm (4.8 in)
1931
116.0 mm (4.6 in)
1932
184.4 mm (7.3 in)
1933
202.7 mm (8.0 in)
1934
95.2 mm (3.7 in)
1935
223.3 mm (8.8 in)
1936
127.2 mm (5.0 in)
1937
94.5 mm (3.7 in)
1938
78.7 mm (3.1 in)
1939
64.5 mm (2.5 in)
1940
169.7 mm (6.7 in)
1941
210.9 mm (8.3 in)
1942
239.3 mm (9.4 in)
1943
221.2 mm (8.7 in)
1944
176.2 mm (6.9 in)
1945
256.0 mm (10.1 in)
1946
219.8 mm (8.7 in)
1947
104.1 mm (4.1 in)
1948
125.5 mm (4.9 in)
1949
347.7 mm (13.7 in)
1950
114.2 mm (4.5 in)
1951
148.3 mm (5.8 in)
1952
155.9 mm (6.1 in)
1953
167.1 mm (6.6 in)
1954
58.6 mm (2.3 in)
1955
94.2 mm (3.7 in)
1956
76.7 mm (3.0 in)
1957
264.7 mm (10.4 in)
1958
124.9 mm (4.9 in)
1959
268.2 mm (10.6 in)
1960
267.2 mm (10.5 in)
1961
236.2 mm (9.3 in)
1962
124.0 mm (4.9 in)
1963
113.2 mm (4.5 in)
1964
142.3 mm (5.6 in)
1965
102.4 mm (4.0 in)
1966
100.1 mm (3.9 in)
1967
127.7 mm (5.0 in)
1968
334.6 mm (13.2 in)
1969
104.4 mm (4.1 in)
1970
140.5 mm (5.5 in)
1971
199.7 mm (7.9 in)
1972
216.6 mm (8.5 in)
1973
406.7 mm (16.0 in)
1974
117.9 mm (4.6 in)
1975
156.6 mm (6.2 in)
1976
99.6 mm (3.9 in)
1977
96.8 mm (3.8 in)
1978
147.6 mm (5.8 in)
1979
692.9 mm (27.3 in)
1980
154.2 mm (6.1 in)
1981
204.3 mm (8.0 in)
1982
120.7 mm (4.8 in)
1983
192.5 mm (7.6 in)
1984
160.1 mm (6.3 in)
1985
126.0 mm (5.0 in)
1986
120.6 mm (4.7 in)
1987
151.2 mm (6.0 in)
1988
175.2 mm (6.9 in)
1989
210.6 mm (8.3 in)
1990
95.8 mm (3.8 in)
1991
122.9 mm (4.8 in)
1992
133.6 mm (5.3 in)
1993
73.4 mm (2.9 in)
1995
164.6 mm (6.5 in)
1996
176.7 mm (7.0 in)
1997
205.7 mm (8.1 in)
1998
181.1 mm (7.1 in)
1999
52.0 mm (2.0 in)
2000
113.8 mm (4.5 in)
2001
282.7 mm (11.1 in)
2002
382.8 mm (15.1 in)
2003
75.7 mm (3.0 in)
2004
202.7 mm (8.0 in)
2005
92.0 mm (3.6 in)
2006
106.6 mm (4.2 in)
2007
169.7 mm (6.7 in)
2008
305.3 mm (12.0 in)
2009
126.0 mm (5.0 in)
2010
276.3 mm (10.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Alvin, 1898 to 2010. The record is 50 days in 1930, marked on the chart; the median year is 26 days.
Longest dry spell (CDD) at Alvin by year
Year
Longest dry spell (CDD)
1898
14 days
1900
17 days
1901
26 days
1902
17 days
1903
32 days
1904
17 days
1905
20 days
1906
34 days
1907
28 days
1908
25 days
1909
23 days
1910
31 days
1911
29 days
1912
26 days
1913
28 days
1914
24 days
1915
35 days
1916
28 days
1917
43 days
1918
29 days
1919
14 days
1920
18 days
1921
24 days
1922
20 days
1923
26 days
1924
33 days
1925
35 days
1926
26 days
1927
34 days
1928
23 days
1929
39 days
1930
50 days
1931
31 days
1932
31 days
1933
31 days
1934
46 days
1935
46 days
1936
32 days
1937
40 days
1938
33 days
1939
35 days
1940
35 days
1941
27 days
1942
35 days
1943
35 days
1944
34 days
1945
32 days
1946
20 days
1947
25 days
1948
21 days
1949
19 days
1950
34 days
1951
20 days
1952
43 days
1953
23 days
1954
27 days
1955
28 days
1956
26 days
1957
17 days
1958
26 days
1959
21 days
1960
26 days
1961
42 days
1962
29 days
1963
28 days
1964
26 days
1965
21 days
1966
18 days
1967
30 days
1968
15 days
1969
30 days
1970
45 days
1971
30 days
1972
25 days
1973
29 days
1974
36 days
1975
31 days
1976
30 days
1977
34 days
1978
34 days
1979
32 days
1980
21 days
1981
17 days
1982
21 days
1983
27 days
1984
29 days
1985
18 days
1986
26 days
1987
27 days
1988
26 days
1989
17 days
1990
18 days
1991
28 days
1992
23 days
1993
9 days
1995
14 days
1996
26 days
1997
12 days
1998
18 days
1999
21 days
2000
18 days
2001
25 days
2002
37 days
2003
34 days
2004
23 days
2005
26 days
2006
22 days
2007
25 days
2008
37 days
2009
22 days
2010
20 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
25 years with a frost
Across 25 years with a frost, the median last spring frost at Alvin falls on 28 February and the median first autumn frost on 2 December, which leaves a median of 282 days between them.
Fitted over all years, the growing season changes by +3.2 days per decade at this station.
Frost dates and growing season at Alvin
Measure
Median, all years
Earliest period
Recent period (1911 to 2009)
Recent against earliest
Fitted trend
Last spring frost
28 February
n/a
28 February
n/a
-1.8 days per decade
First autumn frost
2 December
n/a
2 December
n/a
+1.4 days per decade
Growing days
282 days
n/a
282 days
n/a
+3.2 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
92 years, 1900 to 2009
A day with at least 101.9 mm (4.0 in) of rain is expected about once in 2 years. A day with at least 404.7 mm (15.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Alvin: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
101.9 mm (4.0 in)
5 years
150.5 mm (5.9 in)
10 years
192.8 mm (7.6 in)
25 years
261.3 mm (10.3 in)
50 years
325.9 mm (12.8 in)
100 years
404.7 mm (15.9 in)
Longer than the 92 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, 92 years of values from 1900 to 2009.
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: 654.1 mm (25.8 in) in 1979; 320.0 mm (12.6 in) in 1973; 299.0 mm (11.8 in) in 2002.
Download the Data
Data for Alvin standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Alvin 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.