Record envelope, standing records and threshold days for Towson (USC00188877), Maryland, United States, with 90 years of record.
Key Facts for Towson
Towson (USC00188877) is a weather station in Maryland, United States at 39.38 latitude and -76.57 longitude, 119 m (390 ft) above sea level.
The station reports from 1907 to 1996, 90 years of record.
1,464 records set at Towson still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Towson tied a daily record high minimum temperature of 21.1 C (70.0 F) on 30 September 1996.
About the Station
Location: Maryland, United States, 39.38 latitude, -76.57 longitude.
Elevation: 119 m (390 ft).
Period of record: 1907 to 1996, 90 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 Towson. 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 Towson, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
25.6 C (78.1 F)
-25.6 C (-14.1 F)
n/a
n/a
Feb
26.1 C (79.0 F)
-21.1 C (-6.0 F)
n/a
n/a
Mar
30.6 C (87.1 F)
-14.4 C (6.1 F)
n/a
n/a
Apr
33.9 C (93.0 F)
-10.6 C (12.9 F)
n/a
n/a
May
35.6 C (96.1 F)
-1.1 C (30.0 F)
n/a
n/a
Jun
37.8 C (100.0 F)
3.9 C (39.0 F)
n/a
n/a
Jul
40.0 C (104.0 F)
7.8 C (46.0 F)
n/a
n/a
Aug
40.0 C (104.0 F)
6.7 C (44.1 F)
n/a
n/a
Sep
38.3 C (100.9 F)
-1.1 C (30.0 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-4.4 C (24.1 F)
n/a
n/a
Nov
30.6 C (87.1 F)
-12.8 C (9.0 F)
n/a
n/a
Dec
24.4 C (75.9 F)
-21.1 C (-6.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Towson still stand. 1918 holds the most, with 49.
Standing records at Towson by the year they were set
Year set
Standing records
1908
1
1909
30
1910
34
1911
29
1912
31
1913
33
1914
37
1915
20
1916
39
1917
42
1918
49
1924
1
1925
11
1926
23
1927
8
1928
3
1948
13
1949
25
1950
41
1951
36
1952
26
1953
35
1954
40
1955
14
1956
21
1957
25
1958
29
1959
32
1960
25
1961
18
1962
15
1963
39
1964
30
1965
20
1966
3
1968
7
1969
5
1970
24
1971
17
1972
20
1973
19
1974
31
1975
12
1976
24
1977
23
1978
8
1979
11
1980
15
1981
8
1982
27
1983
29
1984
34
1985
25
1986
28
1987
24
1988
27
1989
27
1990
29
1991
14
1993
26
1994
38
1995
25
1996
9
All-Time Record Progression
6 new records
6 all-time records were set at Towson between 13 August 1955 and 19 January 1994. Each dot is a new record.
When Towson set new all-time records
Date
Kind
Detail
1955-08-13
Record daily precipitation
Record daily precipitation 205.2 mm (8.1 in)
1972-06-22
Record daily precipitation
Record daily precipitation 216.4 mm (8.5 in)
1979-02-19
Record daily snowfall
Record daily snowfall 58.4 cm (23.0 in)
1984-06-08
Record high minimum temperature
Record high minimum temperature 31.7 C (89.1 F)
1984-06-09
Record high minimum temperature
Record high minimum temperature 32.2 C (90.0 F)
1994-01-19
Record low maximum temperature
Record low maximum temperature -13.3 C (8.1 F)
Wettest Day of Each Month
Jun: 216.4 mm (8.5 in)
The wettest day on record for each calendar month at Towson. The most was 216.4 mm (8.5 in) on 22 June 1972.
Record daily precipitation for each month at Towson
Month
Record daily precipitation (mm)
Date
Jan
72.4 mm (2.9 in)
1 January 1976
Feb
50.8 mm (2.0 in)
13 February 1972
Mar
71.4 mm (2.8 in)
20 March 1958
Apr
68.8 mm (2.7 in)
27 April 1952
May
88.1 mm (3.5 in)
9 May 1960
Jun
216.4 mm (8.5 in)
22 June 1972
Jul
152.4 mm (6.0 in)
21 July 1956
Aug
205.2 mm (8.1 in)
13 August 1955
Sep
158.8 mm (6.3 in)
16 September 1976
Oct
100.3 mm (3.9 in)
14 October 1955
Nov
95.3 mm (3.8 in)
13 November 1937
Dec
127.8 mm (5.0 in)
25 December 1918
Period of Record Coverage
1908 to 1996
Complete yearUnder 90 percent of days
65 years of record at Towson, 1908 to 1996. 24 years have data for under 90 percent of days and are left out of rankings: 1908, 1912, 1919, 1924, 1925, 1926, 1927, 1928 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 36 complete years at Towson, 1909 to 1989. Blue stripes are years cooler than the station's own mean of 12.7 C (54.9 F); red stripes are warmer. The coolest year was 1958, at 11.4 C (52.5 F), and the warmest was 1973, at 14.0 C (57.2 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Towson as warming stripes, 1909 to 1989
Year
Annual mean temperature
Difference from the station mean
1909
12.1 C
-0.63 C
1910
12.0 C
-0.69 C
1911
12.6 C
-0.09 C
1913
13.2 C
+0.49 C
1914
11.8 C
-0.97 C
1915
11.9 C
-0.80 C
1916
11.5 C
-1.26 C
1949
13.5 C
+0.75 C
1950
12.2 C
-0.57 C
1951
12.6 C
-0.11 C
1952
13.0 C
+0.23 C
1953
13.8 C
+1.11 C
1954
13.1 C
+0.40 C
1955
12.6 C
-0.12 C
1956
12.7 C
-0.03 C
1957
12.8 C
+0.09 C
1958
11.4 C
-1.34 C
1959
13.2 C
+0.46 C
1960
12.4 C
-0.36 C
1961
12.4 C
-0.30 C
1963
12.0 C
-0.74 C
1965
12.6 C
-0.12 C
1969
12.7 C
-0.06 C
1970
13.1 C
+0.33 C
1971
13.3 C
+0.59 C
1972
12.8 C
+0.03 C
1973
14.0 C
+1.30 C
1974
13.4 C
+0.67 C
1975
13.6 C
+0.86 C
1976
13.1 C
+0.35 C
1977
13.6 C
+0.83 C
1978
12.3 C
-0.41 C
1982
13.2 C
+0.45 C
1983
13.1 C
+0.41 C
1988
12.3 C
-0.44 C
1989
12.3 C
-0.47 C
The annual mean temperature here has risen by 0.11 C (0.03 to 0.20) per decade over 1909 to 1989. In Fahrenheit: 0.20 F (0.05 to 0.35) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Towson
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.11 C (0.03 to 0.20) per decade
0.20 F (0.05 to 0.35) per decade
1909 to 1989
36
Rise
Mean daily maximum
0.07 C (-0.04 to 0.18) per decade
0.1 F (-0.1 to 0.3) per decade
1909 to 1989
36
Not clearly different from zero
Mean daily minimum
0.15 C (0.03 to 0.27) per decade
0.3 F (0.1 to 0.5) per decade
1909 to 1989
36
Rise
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
1907 to 1996
Yearly extremes at Towson: 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)
1918
36.1 C (97.0 F)
65
Coldest night (TNn)
-25.6 C (-14.1 F)
1912
-15.6 C (3.9 F)
65
Wettest day (Rx1day)
216.4 mm (8.5 in)
1972
55.9 mm (2.2 in)
84
Wettest five days (Rx5day)
307.3 mm (12.1 in)
1971
99.6 mm (3.9 in)
84
Longest dry spell (CDD)
29 days
1914
17 days
84
Hottest day (TXx)
The hottest day of the year at Towson, 1907 to 1996. The record is 40.0 C (104.0 F) in 1918, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Towson by year
Year
Hottest day (TXx)
1907
n/a
1908
19.4 C (66.9 F)
1909
36.7 C (98.1 F)
1910
36.7 C (98.1 F)
1911
38.9 C (102.0 F)
1912
34.4 C (93.9 F)
1913
36.7 C (98.1 F)
1914
36.1 C (97.0 F)
1915
35.0 C (95.0 F)
1916
37.8 C (100.0 F)
1917
37.2 C (99.0 F)
1918
40.0 C (104.0 F)
1919
16.7 C (62.1 F)
1924
16.1 C (61.0 F)
1925
33.3 C (91.9 F)
1926
20.0 C (68.0 F)
1927
36.1 C (97.0 F)
1928
24.4 C (75.9 F)
1929
12.2 C (54.0 F)
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
37.8 C (100.0 F)
1949
36.1 C (97.0 F)
1950
34.4 C (93.9 F)
1951
35.0 C (95.0 F)
1952
36.7 C (98.1 F)
1953
38.3 C (100.9 F)
1954
38.9 C (102.0 F)
1955
37.8 C (100.0 F)
1956
35.6 C (96.1 F)
1957
38.3 C (100.9 F)
1958
33.9 C (93.0 F)
1959
37.8 C (100.0 F)
1960
33.9 C (93.0 F)
1961
34.4 C (93.9 F)
1962
35.0 C (95.0 F)
1963
35.6 C (96.1 F)
1964
35.0 C (95.0 F)
1965
35.6 C (96.1 F)
1966
19.4 C (66.9 F)
1968
36.7 C (98.1 F)
1969
35.6 C (96.1 F)
1970
35.6 C (96.1 F)
1971
33.3 C (91.9 F)
1972
34.4 C (93.9 F)
1973
36.1 C (97.0 F)
1974
33.9 C (93.0 F)
1975
35.6 C (96.1 F)
1976
33.3 C (91.9 F)
1977
37.8 C (100.0 F)
1978
35.6 C (96.1 F)
1979
33.9 C (93.0 F)
1980
37.8 C (100.0 F)
1981
36.1 C (97.0 F)
1982
37.8 C (100.0 F)
1983
39.4 C (102.9 F)
1984
35.6 C (96.1 F)
1985
38.9 C (102.0 F)
1986
37.8 C (100.0 F)
1987
37.2 C (99.0 F)
1988
37.8 C (100.0 F)
1989
35.0 C (95.0 F)
1990
36.1 C (97.0 F)
1991
37.2 C (99.0 F)
1993
37.2 C (99.0 F)
1994
36.1 C (97.0 F)
1995
40.0 C (104.0 F)
1996
35.0 C (95.0 F)
Coldest night (TNn)
The coldest night of the year at Towson, 1907 to 1996. The record is -25.6 C (-14.1 F) in 1912, marked on the chart; the median year is -15.6 C (3.9 F).
Coldest night (TNn) at Towson by year
Year
Coldest night (TNn)
1907
n/a
1908
-10.0 C (14.0 F)
1909
-15.6 C (3.9 F)
1910
-16.1 C (3.0 F)
1911
-13.3 C (8.1 F)
1912
-25.6 C (-14.1 F)
1913
-12.8 C (9.0 F)
1914
-17.2 C (1.0 F)
1915
-11.1 C (12.0 F)
1916
-18.3 C (-0.9 F)
1917
-21.1 C (-6.0 F)
1918
-21.1 C (-6.0 F)
1919
-13.9 C (7.0 F)
1924
-11.7 C (10.9 F)
1925
-19.4 C (-2.9 F)
1926
-16.1 C (3.0 F)
1927
-16.7 C (1.9 F)
1928
-15.0 C (5.0 F)
1929
-10.6 C (12.9 F)
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
-16.7 C (1.9 F)
1949
-12.2 C (10.0 F)
1950
-15.0 C (5.0 F)
1951
-15.6 C (3.9 F)
1952
-13.3 C (8.1 F)
1953
-12.2 C (10.0 F)
1954
-16.1 C (3.0 F)
1955
-16.7 C (1.9 F)
1956
-12.2 C (10.0 F)
1957
-17.2 C (1.0 F)
1958
-17.8 C (0.0 F)
1959
-17.2 C (1.0 F)
1960
-18.9 C (-2.0 F)
1961
-20.6 C (-5.1 F)
1962
-15.6 C (3.9 F)
1963
-20.6 C (-5.1 F)
1964
-17.8 C (0.0 F)
1965
-17.2 C (1.0 F)
1966
-16.7 C (1.9 F)
1968
-12.8 C (9.0 F)
1969
-12.2 C (10.0 F)
1970
-16.7 C (1.9 F)
1971
-13.9 C (7.0 F)
1972
-17.2 C (1.0 F)
1973
-14.4 C (6.1 F)
1974
-12.2 C (10.0 F)
1975
-10.6 C (12.9 F)
1976
-13.3 C (8.1 F)
1977
-17.2 C (1.0 F)
1978
-12.8 C (9.0 F)
1979
-16.7 C (1.9 F)
1980
-15.0 C (5.0 F)
1981
-16.1 C (3.0 F)
1982
-17.8 C (0.0 F)
1983
-17.8 C (0.0 F)
1984
-22.2 C (-8.0 F)
1985
-14.4 C (6.1 F)
1986
-14.4 C (6.1 F)
1987
-15.0 C (5.0 F)
1988
-16.1 C (3.0 F)
1989
-17.8 C (0.0 F)
1990
-12.2 C (10.0 F)
1991
-4.4 C (24.1 F)
1993
-11.7 C (10.9 F)
1994
-20.0 C (-4.0 F)
1995
-12.8 C (9.0 F)
1996
-3.3 C (26.1 F)
Wettest day (Rx1day)
The wettest day of the year at Towson, 1907 to 1996. The record is 216.4 mm (8.5 in) in 1972, marked on the chart; the median year is 55.9 mm (2.2 in).
Wettest day (Rx1day) at Towson by year
Year
Wettest day (Rx1day)
1907
94.0 mm (3.7 in)
1908
50.3 mm (2.0 in)
1909
67.3 mm (2.6 in)
1910
54.9 mm (2.2 in)
1911
136.7 mm (5.4 in)
1912
82.6 mm (3.3 in)
1913
43.9 mm (1.7 in)
1914
61.5 mm (2.4 in)
1915
81.3 mm (3.2 in)
1916
109.0 mm (4.3 in)
1917
52.3 mm (2.1 in)
1918
127.8 mm (5.0 in)
1919
37.1 mm (1.5 in)
1924
68.6 mm (2.7 in)
1925
59.9 mm (2.4 in)
1926
83.8 mm (3.3 in)
1927
62.5 mm (2.5 in)
1928
94.0 mm (3.7 in)
1929
61.0 mm (2.4 in)
1930
47.5 mm (1.9 in)
1931
58.4 mm (2.3 in)
1932
55.9 mm (2.2 in)
1933
101.6 mm (4.0 in)
1934
53.3 mm (2.1 in)
1935
76.7 mm (3.0 in)
1936
51.3 mm (2.0 in)
1937
95.3 mm (3.8 in)
1938
40.4 mm (1.6 in)
1939
55.9 mm (2.2 in)
1940
91.9 mm (3.6 in)
1941
39.4 mm (1.6 in)
1942
55.9 mm (2.2 in)
1943
53.8 mm (2.1 in)
1944
55.9 mm (2.2 in)
1945
51.6 mm (2.0 in)
1946
76.5 mm (3.0 in)
1947
57.7 mm (2.3 in)
1948
41.9 mm (1.6 in)
1949
50.8 mm (2.0 in)
1950
82.0 mm (3.2 in)
1951
45.7 mm (1.8 in)
1952
95.0 mm (3.7 in)
1953
80.0 mm (3.1 in)
1954
38.1 mm (1.5 in)
1955
205.2 mm (8.1 in)
1956
152.4 mm (6.0 in)
1957
42.2 mm (1.7 in)
1958
71.4 mm (2.8 in)
1959
49.8 mm (2.0 in)
1960
113.0 mm (4.4 in)
1961
163.1 mm (6.4 in)
1962
69.6 mm (2.7 in)
1963
52.1 mm (2.1 in)
1964
41.4 mm (1.6 in)
1965
53.3 mm (2.1 in)
1966
21.8 mm (0.9 in)
1968
53.3 mm (2.1 in)
1969
50.8 mm (2.0 in)
1970
49.0 mm (1.9 in)
1971
190.2 mm (7.5 in)
1972
216.4 mm (8.5 in)
1973
61.0 mm (2.4 in)
1974
60.5 mm (2.4 in)
1975
69.1 mm (2.7 in)
1976
158.8 mm (6.3 in)
1977
106.7 mm (4.2 in)
1978
72.4 mm (2.9 in)
1979
50.8 mm (2.0 in)
1980
50.8 mm (2.0 in)
1981
50.8 mm (2.0 in)
1982
51.1 mm (2.0 in)
1983
51.6 mm (2.0 in)
1984
61.0 mm (2.4 in)
1985
109.2 mm (4.3 in)
1986
50.8 mm (2.0 in)
1987
55.9 mm (2.2 in)
1988
51.3 mm (2.0 in)
1989
58.4 mm (2.3 in)
1990
55.9 mm (2.2 in)
1991
48.3 mm (1.9 in)
1993
50.8 mm (2.0 in)
1994
51.1 mm (2.0 in)
1995
51.6 mm (2.0 in)
1996
10.2 mm (0.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Towson, 1907 to 1996. The record is 307.3 mm (12.1 in) in 1971, marked on the chart; the median year is 99.6 mm (3.9 in).
Wettest five days (Rx5day) at Towson by year
Year
Wettest five days (Rx5day)
1907
111.6 mm (4.4 in)
1908
72.9 mm (2.9 in)
1909
78.8 mm (3.1 in)
1910
126.3 mm (5.0 in)
1911
171.2 mm (6.7 in)
1912
94.6 mm (3.7 in)
1913
89.7 mm (3.5 in)
1914
102.9 mm (4.1 in)
1915
124.3 mm (4.9 in)
1916
121.5 mm (4.8 in)
1917
80.8 mm (3.2 in)
1918
127.8 mm (5.0 in)
1919
66.3 mm (2.6 in)
1924
121.2 mm (4.8 in)
1925
62.4 mm (2.5 in)
1926
110.8 mm (4.4 in)
1927
83.8 mm (3.3 in)
1928
99.1 mm (3.9 in)
1929
100.7 mm (4.0 in)
1930
53.1 mm (2.1 in)
1931
82.3 mm (3.2 in)
1932
101.6 mm (4.0 in)
1933
258.6 mm (10.2 in)
1934
80.3 mm (3.2 in)
1935
137.9 mm (5.4 in)
1936
79.3 mm (3.1 in)
1937
154.2 mm (6.1 in)
1938
83.0 mm (3.3 in)
1939
89.1 mm (3.5 in)
1940
111.4 mm (4.4 in)
1941
68.6 mm (2.7 in)
1942
148.6 mm (5.9 in)
1943
78.9 mm (3.1 in)
1944
81.3 mm (3.2 in)
1945
132.3 mm (5.2 in)
1946
98.6 mm (3.9 in)
1947
70.4 mm (2.8 in)
1948
78.3 mm (3.1 in)
1949
92.7 mm (3.6 in)
1950
124.9 mm (4.9 in)
1951
82.1 mm (3.2 in)
1952
169.4 mm (6.7 in)
1953
80.0 mm (3.1 in)
1954
49.3 mm (1.9 in)
1955
260.6 mm (10.3 in)
1956
168.1 mm (6.6 in)
1957
79.7 mm (3.1 in)
1958
117.8 mm (4.6 in)
1959
102.8 mm (4.0 in)
1960
188.5 mm (7.4 in)
1961
196.7 mm (7.7 in)
1962
72.4 mm (2.9 in)
1963
118.3 mm (4.7 in)
1964
57.1 mm (2.2 in)
1965
81.3 mm (3.2 in)
1966
30.5 mm (1.2 in)
1968
104.1 mm (4.1 in)
1969
119.4 mm (4.7 in)
1970
77.4 mm (3.0 in)
1971
307.3 mm (12.1 in)
1972
265.3 mm (10.4 in)
1973
87.6 mm (3.4 in)
1974
83.0 mm (3.3 in)
1975
205.1 mm (8.1 in)
1976
163.9 mm (6.5 in)
1977
148.9 mm (5.9 in)
1978
107.2 mm (4.2 in)
1979
106.2 mm (4.2 in)
1980
66.0 mm (2.6 in)
1981
98.2 mm (3.9 in)
1982
65.5 mm (2.6 in)
1983
100.1 mm (3.9 in)
1984
142.6 mm (5.6 in)
1985
117.0 mm (4.6 in)
1986
78.8 mm (3.1 in)
1987
88.3 mm (3.5 in)
1988
140.3 mm (5.5 in)
1989
130.9 mm (5.2 in)
1990
156.5 mm (6.2 in)
1991
74.7 mm (2.9 in)
1993
72.4 mm (2.9 in)
1994
181.1 mm (7.1 in)
1995
72.3 mm (2.8 in)
1996
2.1 mm (0.08 in)
Longest dry spell (CDD)
The longest dry spell of the year at Towson, 1907 to 1996. The record is 29 days in 1914, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Towson by year
Year
Longest dry spell (CDD)
1907
15 days
1908
19 days
1909
18 days
1910
23 days
1911
13 days
1912
12 days
1913
23 days
1914
29 days
1915
18 days
1916
15 days
1917
22 days
1918
25 days
1919
9 days
1924
24 days
1925
15 days
1926
13 days
1927
21 days
1928
14 days
1929
12 days
1930
27 days
1931
19 days
1932
16 days
1933
15 days
1934
14 days
1935
17 days
1936
10 days
1937
15 days
1938
13 days
1939
25 days
1940
19 days
1941
25 days
1942
26 days
1943
19 days
1944
17 days
1945
15 days
1946
17 days
1947
12 days
1948
10 days
1949
19 days
1950
15 days
1951
14 days
1952
16 days
1953
17 days
1954
17 days
1955
22 days
1956
13 days
1957
14 days
1958
16 days
1959
25 days
1960
19 days
1961
16 days
1962
19 days
1963
28 days
1964
27 days
1965
15 days
1966
10 days
1968
25 days
1969
17 days
1970
20 days
1971
20 days
1972
13 days
1973
26 days
1974
19 days
1975
15 days
1976
26 days
1977
29 days
1978
16 days
1979
12 days
1980
17 days
1981
24 days
1982
16 days
1983
20 days
1984
23 days
1985
18 days
1986
20 days
1987
27 days
1988
24 days
1989
11 days
1990
22 days
1991
12 days
1993
14 days
1994
15 days
1995
24 days
1996
25 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 Towson falls on 14 April and the median first autumn frost on 23 October, which leaves a median of 192 days between them.
Fitted over all years, the growing season changes by +0.2 days per decade at this station.
Frost dates and growing season at Towson
Measure
Median, all years
Earliest period
Recent period (1916 to 1989)
Recent against earliest
Fitted trend
Last spring frost
14 April
n/a
13 April
n/a
-0.1 days per decade
First autumn frost
23 October
n/a
22 October
n/a
+0.1 days per decade
Growing days
192 days
n/a
192 days
n/a
+0.2 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
59 years, 1909 to 1994
A day with at least 62.3 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 282.8 mm (11.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Towson: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
62.3 mm (2.5 in)
5 years
90.5 mm (3.6 in)
10 years
117.6 mm (4.6 in)
25 years
166.2 mm (6.5 in)
50 years
216.5 mm (8.5 in)
100 years
282.8 mm (11.1 in)
Longer than the 59 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, 59 years of values from 1909 to 1994.
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: 216.4 mm (8.5 in) in 1972; 205.2 mm (8.1 in) in 1955; 190.2 mm (7.5 in) in 1971.
Download the Data
Data for Towson standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Towson 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.