Record envelope, standing records and threshold days for Fallston (USC00183050), Maryland, United States, with 61 years of record.
Key Facts for Fallston
Fallston (USC00183050) is a weather station in Maryland, United States at 39.52 latitude and -76.40 longitude, 137 m (449 ft) above sea level.
The station reports from 1893 to 1953, 61 years of record.
1,464 records set at Fallston still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Fallston set a daily record low minimum temperature of -4.4 C (24.1 F) on 20 April 1953.
About the Station
Location: Maryland, United States, 39.52 latitude, -76.40 longitude.
Elevation: 137 m (449 ft).
Period of record: 1893 to 1953, 61 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 Fallston. 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 Fallston, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
23.9 C (75.0 F)
-21.7 C (-7.1 F)
n/a
n/a
Feb
26.1 C (79.0 F)
-25.6 C (-14.1 F)
n/a
n/a
Mar
30.6 C (87.1 F)
-18.3 C (-0.9 F)
n/a
n/a
Apr
32.8 C (91.0 F)
-12.2 C (10.0 F)
n/a
n/a
May
34.4 C (93.9 F)
-2.8 C (27.0 F)
n/a
n/a
Jun
37.8 C (100.0 F)
1.1 C (34.0 F)
n/a
n/a
Jul
40.0 C (104.0 F)
9.4 C (48.9 F)
n/a
n/a
Aug
39.4 C (102.9 F)
8.3 C (46.9 F)
n/a
n/a
Sep
36.1 C (97.0 F)
0.6 C (33.1 F)
n/a
n/a
Oct
36.1 C (97.0 F)
-5.6 C (21.9 F)
n/a
n/a
Nov
30.0 C (86.0 F)
-12.8 C (9.0 F)
n/a
n/a
Dec
20.6 C (69.1 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 Fallston still stand. 1900 holds the most, with 59.
Standing records at Fallston by the year they were set
Year set
Standing records
1893
1
1897
7
1898
35
1899
28
1900
59
1901
30
1902
22
1903
28
1904
29
1905
28
1906
25
1907
38
1908
25
1909
25
1910
18
1911
23
1912
34
1913
25
1914
49
1915
17
1916
24
1917
28
1918
34
1919
19
1920
21
1921
29
1922
9
1923
21
1924
19
1925
32
1926
30
1927
28
1928
24
1929
44
1930
52
1931
27
1932
30
1933
30
1934
28
1935
25
1936
31
1937
19
1938
24
1939
15
1940
27
1941
28
1942
22
1943
14
1944
9
1945
28
1946
23
1947
21
1948
16
1949
14
1950
28
1951
25
1952
16
1953
4
All-Time Record Progression
1 new records
1 all-time records were set at Fallston between 19 July 1930 and 19 July 1930. Each dot is a new record.
When Fallston set new all-time records
Date
Kind
Detail
1930-07-19
Record high maximum temperature
Record high maximum temperature 40.0 C (104.0 F)
Wettest Day of Each Month
Jan: 168.7 mm (6.6 in)
The wettest day on record for each calendar month at Fallston. The most was 168.7 mm (6.6 in) on 12 January 1915.
Record daily precipitation for each month at Fallston
Month
Record daily precipitation (mm)
Date
Jan
168.7 mm (6.6 in)
12 January 1915
Feb
75.2 mm (3.0 in)
6 February 1896
Mar
71.6 mm (2.8 in)
11 March 1952
Apr
80.3 mm (3.2 in)
11 April 1894
May
87.6 mm (3.4 in)
3 May 1893
Jun
79.5 mm (3.1 in)
14 June 1947
Jul
152.4 mm (6.0 in)
25 July 1916
Aug
125.5 mm (4.9 in)
9 August 1942
Sep
140.5 mm (5.5 in)
26 September 1902
Oct
72.4 mm (2.9 in)
6 October 1932
Nov
86.9 mm (3.4 in)
16 November 1926
Dec
78.7 mm (3.1 in)
29 December 1901
Period of Record Coverage
1893 to 1953
Complete yearUnder 90 percent of days
58 years of record at Fallston, 1893 to 1953. 4 years have data for under 90 percent of days and are left out of rankings: 1893, 1897, 1915, 1953.
Cooler than the station meanWarmer than the station mean
One stripe for each of 52 complete years at Fallston, 1898 to 1952. Blue stripes are years cooler than the station's own mean of 11.8 C (53.2 F); red stripes are warmer. The coolest year was 1904, at 9.9 C (49.9 F), and the warmest was 1921, at 13.1 C (55.6 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Fallston as warming stripes, 1898 to 1952
Year
Annual mean temperature
Difference from the station mean
1898
11.9 C
+0.11 C
1899
11.2 C
-0.55 C
1900
12.6 C
+0.88 C
1901
11.2 C
-0.57 C
1902
11.5 C
-0.24 C
1903
11.4 C
-0.37 C
1904
9.9 C
-1.83 C
1905
11.1 C
-0.63 C
1906
12.0 C
+0.19 C
1907
10.5 C
-1.30 C
1908
11.8 C
+0.04 C
1909
11.5 C
-0.29 C
1910
11.5 C
-0.24 C
1911
12.0 C
+0.23 C
1912
11.0 C
-0.78 C
1913
12.8 C
+1.01 C
1914
11.3 C
-0.45 C
1916
11.3 C
-0.49 C
1917
10.4 C
-1.34 C
1918
11.6 C
-0.18 C
1919
12.1 C
+0.32 C
1920
11.2 C
-0.58 C
1921
13.1 C
+1.34 C
1922
12.2 C
+0.42 C
1923
11.7 C
-0.04 C
1924
10.8 C
-0.99 C
1925
11.7 C
-0.11 C
1926
10.6 C
-1.17 C
1927
11.7 C
-0.08 C
1928
11.8 C
0.00 C
1929
12.0 C
+0.25 C
1930
12.6 C
+0.83 C
1932
12.5 C
+0.70 C
1933
12.3 C
+0.53 C
1934
11.4 C
-0.35 C
1935
11.6 C
-0.15 C
1936
11.9 C
+0.17 C
1937
12.3 C
+0.49 C
1938
12.7 C
+0.93 C
1939
12.6 C
+0.79 C
1940
10.9 C
-0.90 C
1941
12.6 C
+0.86 C
1942
12.2 C
+0.47 C
1943
12.2 C
+0.46 C
1944
12.3 C
+0.49 C
1945
12.2 C
+0.48 C
1946
12.9 C
+1.12 C
1947
12.0 C
+0.22 C
1948
12.1 C
+0.32 C
1950
11.5 C
-0.28 C
1951
11.8 C
+0.06 C
1952
12.2 C
+0.42 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1898 to 1952. In Fahrenheit: 0.3 F (0.1 to 0.5) per decade. The slope is a straight line fitted to 52 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Fallston
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.3) per decade
0.3 F (0.1 to 0.5) per decade
1898 to 1952
52
Rise
Mean daily maximum
0.3 C (0.1 to 0.4) per decade
0.5 F (0.2 to 0.7) per decade
1898 to 1952
52
Rise
Mean daily minimum
0.08 C (-0.03 to 0.20) per decade
0.1 F (-0.1 to 0.4) per decade
1898 to 1952
52
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
1893 to 1953
Yearly extremes at Fallston: 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)
1930
35.0 C (95.0 F)
58
Coldest night (TNn)
-25.6 C (-14.1 F)
1899
-16.1 C (3.0 F)
58
Wettest day (Rx1day)
168.7 mm (6.6 in)
1915
70.1 mm (2.8 in)
61
Wettest five days (Rx5day)
216.4 mm (8.5 in)
1945
100.3 mm (3.9 in)
61
Longest dry spell (CDD)
30 days
1910
17 days
61
Hottest day (TXx)
The hottest day of the year at Fallston, 1893 to 1953. The record is 40.0 C (104.0 F) in 1930, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Fallston by year
Year
Hottest day (TXx)
1893
30.0 C (86.0 F)
1894
n/a
1895
n/a
1896
n/a
1897
28.9 C (84.0 F)
1898
35.0 C (95.0 F)
1899
33.9 C (93.0 F)
1900
39.4 C (102.9 F)
1901
37.8 C (100.0 F)
1902
35.6 C (96.1 F)
1903
34.4 C (93.9 F)
1904
35.6 C (96.1 F)
1905
35.0 C (95.0 F)
1906
33.3 C (91.9 F)
1907
32.8 C (91.0 F)
1908
35.6 C (96.1 F)
1909
35.6 C (96.1 F)
1910
35.0 C (95.0 F)
1911
36.1 C (97.0 F)
1912
33.9 C (93.0 F)
1913
34.4 C (93.9 F)
1914
35.0 C (95.0 F)
1915
32.8 C (91.0 F)
1916
35.0 C (95.0 F)
1917
35.6 C (96.1 F)
1918
37.8 C (100.0 F)
1919
35.6 C (96.1 F)
1920
32.2 C (90.0 F)
1921
35.0 C (95.0 F)
1922
32.2 C (90.0 F)
1923
33.3 C (91.9 F)
1924
35.0 C (95.0 F)
1925
35.0 C (95.0 F)
1926
35.6 C (96.1 F)
1927
35.0 C (95.0 F)
1928
35.0 C (95.0 F)
1929
36.1 C (97.0 F)
1930
40.0 C (104.0 F)
1931
36.7 C (98.1 F)
1932
35.6 C (96.1 F)
1933
36.1 C (97.0 F)
1934
37.8 C (100.0 F)
1935
34.4 C (93.9 F)
1936
40.0 C (104.0 F)
1937
34.4 C (93.9 F)
1938
35.6 C (96.1 F)
1939
35.0 C (95.0 F)
1940
36.1 C (97.0 F)
1941
36.1 C (97.0 F)
1942
33.9 C (93.0 F)
1943
36.7 C (98.1 F)
1944
35.6 C (96.1 F)
1945
35.0 C (95.0 F)
1946
32.2 C (90.0 F)
1947
35.0 C (95.0 F)
1948
36.7 C (98.1 F)
1949
35.6 C (96.1 F)
1950
32.2 C (90.0 F)
1951
33.3 C (91.9 F)
1952
36.1 C (97.0 F)
1953
28.9 C (84.0 F)
Coldest night (TNn)
The coldest night of the year at Fallston, 1893 to 1953. The record is -25.6 C (-14.1 F) in 1899, marked on the chart; the median year is -16.1 C (3.0 F).
Coldest night (TNn) at Fallston by year
Year
Coldest night (TNn)
1893
6.7 C (44.1 F)
1894
n/a
1895
n/a
1896
n/a
1897
-11.1 C (12.0 F)
1898
-16.1 C (3.0 F)
1899
-25.6 C (-14.1 F)
1900
-15.6 C (3.9 F)
1901
-13.9 C (7.0 F)
1902
-16.1 C (3.0 F)
1903
-20.0 C (-4.0 F)
1904
-20.6 C (-5.1 F)
1905
-18.3 C (-0.9 F)
1906
-15.6 C (3.9 F)
1907
-18.3 C (-0.9 F)
1908
-16.1 C (3.0 F)
1909
-16.1 C (3.0 F)
1910
-16.7 C (1.9 F)
1911
-12.2 C (10.0 F)
1912
-21.7 C (-7.1 F)
1913
-12.8 C (9.0 F)
1914
-18.3 C (-0.9 F)
1915
-11.1 C (12.0 F)
1916
-16.7 C (1.9 F)
1917
-21.1 C (-6.0 F)
1918
-23.9 C (-11.0 F)
1919
-16.7 C (1.9 F)
1920
-16.7 C (1.9 F)
1921
-15.0 C (5.0 F)
1922
-17.8 C (0.0 F)
1923
-14.4 C (6.1 F)
1924
-16.7 C (1.9 F)
1925
-18.9 C (-2.0 F)
1926
-16.1 C (3.0 F)
1927
-16.7 C (1.9 F)
1928
-14.4 C (6.1 F)
1929
-15.6 C (3.9 F)
1930
-18.3 C (-0.9 F)
1931
-12.8 C (9.0 F)
1932
-12.2 C (10.0 F)
1933
-18.3 C (-0.9 F)
1934
-25.6 C (-14.1 F)
1935
-20.6 C (-5.1 F)
1936
-20.0 C (-4.0 F)
1937
-10.6 C (12.9 F)
1938
-12.8 C (9.0 F)
1939
-13.3 C (8.1 F)
1940
-17.8 C (0.0 F)
1941
-10.6 C (12.9 F)
1942
-20.0 C (-4.0 F)
1943
-16.7 C (1.9 F)
1944
-13.3 C (8.1 F)
1945
-15.6 C (3.9 F)
1946
-12.2 C (10.0 F)
1947
-16.1 C (3.0 F)
1948
-17.2 C (1.0 F)
1949
-12.8 C (9.0 F)
1950
-16.7 C (1.9 F)
1951
-17.2 C (1.0 F)
1952
-13.3 C (8.1 F)
1953
-11.1 C (12.0 F)
Wettest day (Rx1day)
The wettest day of the year at Fallston, 1893 to 1953. The record is 168.7 mm (6.6 in) in 1915, marked on the chart; the median year is 70.1 mm (2.8 in).
Wettest day (Rx1day) at Fallston by year
Year
Wettest day (Rx1day)
1893
87.6 mm (3.4 in)
1894
80.3 mm (3.2 in)
1895
80.0 mm (3.1 in)
1896
75.2 mm (3.0 in)
1897
82.6 mm (3.3 in)
1898
49.5 mm (1.9 in)
1899
64.3 mm (2.5 in)
1900
59.9 mm (2.4 in)
1901
82.6 mm (3.3 in)
1902
140.5 mm (5.5 in)
1903
43.4 mm (1.7 in)
1904
66.5 mm (2.6 in)
1905
68.6 mm (2.7 in)
1906
59.2 mm (2.3 in)
1907
85.1 mm (3.4 in)
1908
70.6 mm (2.8 in)
1909
73.2 mm (2.9 in)
1910
61.7 mm (2.4 in)
1911
111.3 mm (4.4 in)
1912
72.6 mm (2.9 in)
1913
65.5 mm (2.6 in)
1914
57.7 mm (2.3 in)
1915
168.7 mm (6.6 in)
1916
152.4 mm (6.0 in)
1917
50.8 mm (2.0 in)
1918
50.8 mm (2.0 in)
1919
69.9 mm (2.8 in)
1920
56.6 mm (2.2 in)
1921
44.5 mm (1.8 in)
1922
58.7 mm (2.3 in)
1923
53.1 mm (2.1 in)
1924
67.3 mm (2.6 in)
1925
55.9 mm (2.2 in)
1926
86.9 mm (3.4 in)
1927
53.1 mm (2.1 in)
1928
92.2 mm (3.6 in)
1929
74.9 mm (2.9 in)
1930
40.4 mm (1.6 in)
1931
74.4 mm (2.9 in)
1932
72.4 mm (2.9 in)
1933
102.6 mm (4.0 in)
1934
79.0 mm (3.1 in)
1935
79.5 mm (3.1 in)
1936
43.7 mm (1.7 in)
1937
93.7 mm (3.7 in)
1938
53.1 mm (2.1 in)
1939
86.6 mm (3.4 in)
1940
62.2 mm (2.4 in)
1941
52.3 mm (2.1 in)
1942
125.5 mm (4.9 in)
1943
80.0 mm (3.1 in)
1944
67.3 mm (2.6 in)
1945
97.0 mm (3.8 in)
1946
57.4 mm (2.3 in)
1947
79.5 mm (3.1 in)
1948
52.8 mm (2.1 in)
1949
51.8 mm (2.0 in)
1950
102.1 mm (4.0 in)
1951
70.1 mm (2.8 in)
1952
76.2 mm (3.0 in)
1953
47.5 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Fallston, 1893 to 1953. The record is 216.4 mm (8.5 in) in 1945, marked on the chart; the median year is 100.3 mm (3.9 in).
Wettest five days (Rx5day) at Fallston by year
Year
Wettest five days (Rx5day)
1893
100.3 mm (3.9 in)
1894
138.4 mm (5.4 in)
1895
107.7 mm (4.2 in)
1896
77.0 mm (3.0 in)
1897
99.1 mm (3.9 in)
1898
62.1 mm (2.4 in)
1899
77.5 mm (3.1 in)
1900
78.5 mm (3.1 in)
1901
116.1 mm (4.6 in)
1902
192.6 mm (7.6 in)
1903
105.0 mm (4.1 in)
1904
108.4 mm (4.3 in)
1905
71.6 mm (2.8 in)
1906
71.9 mm (2.8 in)
1907
104.0 mm (4.1 in)
1908
93.1 mm (3.7 in)
1909
88.6 mm (3.5 in)
1910
135.0 mm (5.3 in)
1911
208.8 mm (8.2 in)
1912
87.8 mm (3.5 in)
1913
110.5 mm (4.4 in)
1914
69.7 mm (2.7 in)
1915
102.8 mm (4.0 in)
1916
170.4 mm (6.7 in)
1917
72.3 mm (2.8 in)
1918
92.5 mm (3.6 in)
1919
143.9 mm (5.7 in)
1920
87.1 mm (3.4 in)
1921
83.1 mm (3.3 in)
1922
132.3 mm (5.2 in)
1923
82.8 mm (3.3 in)
1924
127.5 mm (5.0 in)
1925
71.1 mm (2.8 in)
1926
111.5 mm (4.4 in)
1927
68.1 mm (2.7 in)
1928
122.4 mm (4.8 in)
1929
124.7 mm (4.9 in)
1930
57.6 mm (2.3 in)
1931
89.7 mm (3.5 in)
1932
93.7 mm (3.7 in)
1933
193.2 mm (7.6 in)
1934
111.0 mm (4.4 in)
1935
148.9 mm (5.9 in)
1936
63.7 mm (2.5 in)
1937
141.0 mm (5.6 in)
1938
91.4 mm (3.6 in)
1939
141.4 mm (5.6 in)
1940
88.9 mm (3.5 in)
1941
62.2 mm (2.4 in)
1942
159.8 mm (6.3 in)
1943
101.6 mm (4.0 in)
1944
81.3 mm (3.2 in)
1945
216.4 mm (8.5 in)
1946
145.9 mm (5.7 in)
1947
106.1 mm (4.2 in)
1948
79.5 mm (3.1 in)
1949
85.9 mm (3.4 in)
1950
117.3 mm (4.6 in)
1951
94.1 mm (3.7 in)
1952
156.0 mm (6.1 in)
1953
70.9 mm (2.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Fallston, 1893 to 1953. The record is 30 days in 1910, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Fallston by year
Year
Longest dry spell (CDD)
1893
14 days
1894
15 days
1895
18 days
1896
18 days
1897
18 days
1898
14 days
1899
15 days
1900
16 days
1901
27 days
1902
20 days
1903
18 days
1904
21 days
1905
14 days
1906
17 days
1907
17 days
1908
20 days
1909
18 days
1910
30 days
1911
21 days
1912
11 days
1913
14 days
1914
19 days
1915
13 days
1916
14 days
1917
22 days
1918
16 days
1919
11 days
1920
25 days
1921
15 days
1922
24 days
1923
17 days
1924
27 days
1925
15 days
1926
15 days
1927
13 days
1928
12 days
1929
17 days
1930
25 days
1931
19 days
1932
16 days
1933
15 days
1934
15 days
1935
19 days
1936
19 days
1937
16 days
1938
16 days
1939
25 days
1940
18 days
1941
28 days
1942
18 days
1943
18 days
1944
19 days
1945
13 days
1946
20 days
1947
16 days
1948
10 days
1949
20 days
1950
15 days
1951
24 days
1952
16 days
1953
13 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
52 years with a frost
Across 52 years with a frost, the median last spring frost at Fallston falls on 19 April and the median first autumn frost on 24 October, which leaves a median of 188 days between them.
Fitted over all years, the growing season changes by +0.8 days per decade at this station.
Frost dates and growing season at Fallston
Measure
Median, all years
Earliest period
Recent period (1921 to 1952)
Recent against earliest
Fitted trend
Last spring frost
19 April
n/a
19 April
n/a
+0.2 days per decade
First autumn frost
24 October
n/a
24 October
n/a
+1.1 days per decade
Growing days
188 days
n/a
188 days
n/a
+0.8 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
53 years, 1893 to 1952
A day with at least 67.8 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 151.0 mm (5.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Fallston: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
67.8 mm (2.7 in)
5 years
87.6 mm (3.4 in)
10 years
101.6 mm (4.0 in)
25 years
120.5 mm (4.7 in)
50 years
135.4 mm (5.3 in)
100 years
151.0 mm (5.9 in)
Longer than the 53 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, 53 years of values from 1893 to 1952.
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: 152.4 mm (6.0 in) in 1916; 140.5 mm (5.5 in) in 1902; 125.5 mm (4.9 in) in 1942.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Fallston standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Fallston 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.