Record envelope, standing records and threshold days for Trenton (USW00014773), New Jersey, United States, with 69 years of record.
Key Facts for Trenton
Trenton (USW00014773) is a weather station in New Jersey, United States at 40.23 latitude and -74.75 longitude, 58 m (190 ft) above sea level.
The station reports from 1913 to 1981, 69 years of record.
1,464 records set at Trenton still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Trenton set a daily record precipitation of 35.8 mm (1.4 in) on 30 August 1981.
About the Station
Location: New Jersey, United States, 40.23 latitude, -74.75 longitude.
Elevation: 58 m (190 ft).
Period of record: 1913 to 1981, 69 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 Trenton. 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 Trenton, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
22.8 C (73.0 F)
-20.0 C (-4.0 F)
n/a
n/a
Feb
24.4 C (75.9 F)
-25.6 C (-14.1 F)
n/a
n/a
Mar
30.0 C (86.0 F)
-14.4 C (6.1 F)
n/a
n/a
Apr
33.9 C (93.0 F)
-11.7 C (10.9 F)
n/a
n/a
May
35.6 C (96.1 F)
1.1 C (34.0 F)
n/a
n/a
Jun
37.8 C (100.0 F)
6.1 C (43.0 F)
n/a
n/a
Jul
41.1 C (106.0 F)
11.1 C (52.0 F)
n/a
n/a
Aug
40.6 C (105.1 F)
8.9 C (48.0 F)
n/a
n/a
Sep
37.8 C (100.0 F)
2.2 C (36.0 F)
n/a
n/a
Oct
34.4 C (93.9 F)
-3.3 C (26.1 F)
n/a
n/a
Nov
28.3 C (82.9 F)
-11.1 C (12.0 F)
n/a
n/a
Dec
22.2 C (72.0 F)
-21.7 C (-7.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Trenton still stand. 1914 holds the most, with 42.
Standing records at Trenton by the year they were set
Year set
Standing records
1913
18
1914
42
1915
21
1916
24
1917
33
1918
37
1919
27
1920
22
1921
19
1922
19
1923
23
1924
19
1925
34
1926
32
1927
28
1928
19
1929
30
1930
38
1931
17
1932
17
1933
27
1934
41
1935
19
1936
26
1937
13
1938
18
1939
17
1940
29
1941
17
1942
22
1943
20
1944
13
1945
31
1946
12
1947
27
1948
20
1949
24
1950
24
1951
20
1952
9
1953
18
1954
15
1955
21
1956
18
1957
23
1958
7
1959
24
1960
18
1961
20
1962
22
1963
20
1964
20
1965
14
1966
16
1967
13
1968
9
1969
10
1970
26
1971
13
1972
18
1973
18
1974
17
1975
22
1976
26
1977
24
1978
7
1979
28
1980
13
1981
16
All-Time Record Progression
1 new records
1 all-time records were set at Trenton between 20 July 1975 and 20 July 1975. Each dot is a new record.
When Trenton set new all-time records
Date
Kind
Detail
1975-07-20
Record daily precipitation
Record daily precipitation 146.1 mm (5.8 in)
Wettest Day of Each Month
Jul: 146.1 mm (5.8 in)
The wettest day on record for each calendar month at Trenton. The most was 146.1 mm (5.8 in) on 20 July 1975.
Record daily precipitation for each month at Trenton
Month
Record daily precipitation (mm)
Date
Jan
56.4 mm (2.2 in)
21 January 1979
Feb
63.2 mm (2.5 in)
2 February 1973
Mar
57.2 mm (2.3 in)
22 March 1977
Apr
56.6 mm (2.2 in)
6 April 1958
May
68.1 mm (2.7 in)
19 May 1966
Jun
112.3 mm (4.4 in)
12 June 1968
Jul
146.1 mm (5.8 in)
20 July 1975
Aug
131.6 mm (5.2 in)
7 August 1921
Sep
97.5 mm (3.8 in)
1 September 1940
Oct
85.9 mm (3.4 in)
19 October 1966
Nov
72.4 mm (2.9 in)
8 November 1972
Dec
65.8 mm (2.6 in)
30 December 1948
Period of Record Coverage
1913 to 1981
Complete yearUnder 90 percent of days
69 years of record at Trenton, 1913 to 1981. 1 years have data for under 90 percent of days and are left out of rankings: 1913.
Cooler than the station meanWarmer than the station mean
One stripe for each of 67 complete years at Trenton, 1914 to 1980. Blue stripes are years cooler than the station's own mean of 12.0 C (53.6 F); red stripes are warmer. The coolest year was 1917, at 10.1 C (50.3 F), and the warmest was 1949, at 13.3 C (55.9 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Trenton as warming stripes, 1914 to 1980
Year
Annual mean temperature
Difference from the station mean
1914
10.9 C
-1.04 C
1915
11.6 C
-0.36 C
1916
10.9 C
-1.08 C
1917
10.1 C
-1.83 C
1918
11.3 C
-0.71 C
1919
11.8 C
-0.21 C
1920
10.9 C
-1.05 C
1921
12.6 C
+0.62 C
1922
11.8 C
-0.17 C
1923
11.5 C
-0.44 C
1924
11.0 C
-1.01 C
1925
12.0 C
-0.02 C
1926
10.5 C
-1.45 C
1927
11.7 C
-0.24 C
1928
11.7 C
-0.24 C
1929
11.9 C
-0.03 C
1930
12.2 C
+0.26 C
1931
13.0 C
+1.00 C
1932
12.4 C
+0.47 C
1933
12.0 C
+0.04 C
1934
11.2 C
-0.75 C
1935
11.4 C
-0.62 C
1936
11.6 C
-0.34 C
1937
12.1 C
+0.11 C
1938
12.4 C
+0.43 C
1939
12.2 C
+0.19 C
1940
10.7 C
-1.31 C
1941
12.4 C
+0.38 C
1942
12.1 C
+0.11 C
1943
11.7 C
-0.29 C
1944
12.1 C
+0.11 C
1945
12.2 C
+0.23 C
1946
12.8 C
+0.84 C
1947
12.0 C
+0.01 C
1948
12.0 C
+0.01 C
1949
13.3 C
+1.33 C
1950
11.7 C
-0.23 C
1951
12.4 C
+0.43 C
1952
12.7 C
+0.75 C
1953
13.2 C
+1.26 C
1954
12.4 C
+0.44 C
1955
12.4 C
+0.39 C
1956
12.0 C
-0.01 C
1957
12.7 C
+0.71 C
1958
11.3 C
-0.64 C
1959
12.9 C
+0.88 C
1960
11.9 C
-0.05 C
1961
12.0 C
+0.06 C
1962
11.5 C
-0.50 C
1963
11.6 C
-0.39 C
1964
12.3 C
+0.28 C
1965
11.9 C
-0.08 C
1966
12.2 C
+0.18 C
1967
11.8 C
-0.16 C
1968
12.3 C
+0.28 C
1969
12.2 C
+0.20 C
1970
12.1 C
+0.17 C
1971
12.5 C
+0.53 C
1972
11.9 C
-0.05 C
1973
13.2 C
+1.20 C
1974
12.4 C
+0.45 C
1975
12.8 C
+0.83 C
1976
12.0 C
+0.03 C
1977
12.3 C
+0.33 C
1978
11.4 C
-0.53 C
1979
12.1 C
+0.16 C
1980
12.3 C
+0.34 C
The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1914 to 1980. In Fahrenheit: 0.3 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 67 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Trenton
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (0.1 to 0.2) per decade
0.3 F (0.1 to 0.4) per decade
1914 to 1980
67
Rise
Mean daily maximum
0.08 C (-0.01 to 0.16) per decade
0.14 F (-0.01 to 0.29) per decade
1914 to 1980
67
Not clearly different from zero
Mean daily minimum
0.2 C (0.2 to 0.3) per decade
0.4 F (0.3 to 0.5) per decade
1914 to 1980
67
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
1913 to 1981
Yearly extremes at Trenton: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.1 C (106.0 F)
1936
36.1 C (97.0 F)
69
Coldest night (TNn)
-25.6 C (-14.1 F)
1934
-15.6 C (3.9 F)
69
Wettest day (Rx1day)
146.1 mm (5.8 in)
1975
62.5 mm (2.5 in)
69
Wettest five days (Rx5day)
206.3 mm (8.1 in)
1938
91.4 mm (3.6 in)
69
Longest dry spell (CDD)
38 days
1949
18 days
69
Hottest day (TXx)
The hottest day of the year at Trenton, 1913 to 1981. The record is 41.1 C (106.0 F) in 1936, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Trenton by year
Year
Hottest day (TXx)
1913
36.1 C (97.0 F)
1914
35.0 C (95.0 F)
1915
34.4 C (93.9 F)
1916
36.1 C (97.0 F)
1917
36.7 C (98.1 F)
1918
40.6 C (105.1 F)
1919
38.3 C (100.9 F)
1920
33.9 C (93.0 F)
1921
35.0 C (95.0 F)
1922
34.4 C (93.9 F)
1923
36.7 C (98.1 F)
1924
36.1 C (97.0 F)
1925
37.2 C (99.0 F)
1926
38.3 C (100.9 F)
1927
35.0 C (95.0 F)
1928
35.6 C (96.1 F)
1929
35.0 C (95.0 F)
1930
38.3 C (100.9 F)
1931
35.6 C (96.1 F)
1932
34.4 C (93.9 F)
1933
37.2 C (99.0 F)
1934
37.8 C (100.0 F)
1935
35.0 C (95.0 F)
1936
41.1 C (106.0 F)
1937
37.2 C (99.0 F)
1938
35.0 C (95.0 F)
1939
35.6 C (96.1 F)
1940
36.7 C (98.1 F)
1941
36.7 C (98.1 F)
1942
35.6 C (96.1 F)
1943
35.6 C (96.1 F)
1944
36.1 C (97.0 F)
1945
36.7 C (98.1 F)
1946
36.1 C (97.0 F)
1947
35.0 C (95.0 F)
1948
37.2 C (99.0 F)
1949
36.7 C (98.1 F)
1950
33.9 C (93.0 F)
1951
34.4 C (93.9 F)
1952
37.8 C (100.0 F)
1953
37.8 C (100.0 F)
1954
37.2 C (99.0 F)
1955
37.8 C (100.0 F)
1956
35.6 C (96.1 F)
1957
37.8 C (100.0 F)
1958
33.9 C (93.0 F)
1959
36.7 C (98.1 F)
1960
33.3 C (91.9 F)
1961
35.6 C (96.1 F)
1962
35.6 C (96.1 F)
1963
36.7 C (98.1 F)
1964
36.7 C (98.1 F)
1965
34.4 C (93.9 F)
1966
38.9 C (102.0 F)
1967
33.9 C (93.0 F)
1968
36.1 C (97.0 F)
1969
35.0 C (95.0 F)
1970
34.4 C (93.9 F)
1971
34.4 C (93.9 F)
1972
35.6 C (96.1 F)
1973
36.7 C (98.1 F)
1974
35.0 C (95.0 F)
1975
36.7 C (98.1 F)
1976
33.9 C (93.0 F)
1977
37.2 C (99.0 F)
1978
35.0 C (95.0 F)
1979
33.9 C (93.0 F)
1980
37.8 C (100.0 F)
1981
35.6 C (96.1 F)
Coldest night (TNn)
The coldest night of the year at Trenton, 1913 to 1981. The record is -25.6 C (-14.1 F) in 1934, marked on the chart; the median year is -15.6 C (3.9 F).
Coldest night (TNn) at Trenton by year
Year
Coldest night (TNn)
1913
-7.2 C (19.0 F)
1914
-20.0 C (-4.0 F)
1915
-11.1 C (12.0 F)
1916
-17.8 C (0.0 F)
1917
-21.7 C (-7.1 F)
1918
-21.1 C (-6.0 F)
1919
-18.3 C (-0.9 F)
1920
-19.4 C (-2.9 F)
1921
-15.6 C (3.9 F)
1922
-17.8 C (0.0 F)
1923
-13.9 C (7.0 F)
1924
-15.6 C (3.9 F)
1925
-18.3 C (-0.9 F)
1926
-15.6 C (3.9 F)
1927
-16.7 C (1.9 F)
1928
-13.9 C (7.0 F)
1929
-13.9 C (7.0 F)
1930
-14.4 C (6.1 F)
1931
-10.6 C (12.9 F)
1932
-12.8 C (9.0 F)
1933
-18.9 C (-2.0 F)
1934
-25.6 C (-14.1 F)
1935
-18.9 C (-2.0 F)
1936
-19.4 C (-2.9 F)
1937
-8.9 C (16.0 F)
1938
-13.9 C (7.0 F)
1939
-12.2 C (10.0 F)
1940
-16.1 C (3.0 F)
1941
-11.7 C (10.9 F)
1942
-18.9 C (-2.0 F)
1943
-18.9 C (-2.0 F)
1944
-12.2 C (10.0 F)
1945
-17.8 C (0.0 F)
1946
-13.3 C (8.1 F)
1947
-15.0 C (5.0 F)
1948
-16.7 C (1.9 F)
1949
-9.4 C (15.1 F)
1950
-13.9 C (7.0 F)
1951
-15.6 C (3.9 F)
1952
-13.9 C (7.0 F)
1953
-9.4 C (15.1 F)
1954
-13.9 C (7.0 F)
1955
-16.1 C (3.0 F)
1956
-10.0 C (14.0 F)
1957
-16.7 C (1.9 F)
1958
-15.0 C (5.0 F)
1959
-13.9 C (7.0 F)
1960
-12.8 C (9.0 F)
1961
-18.9 C (-2.0 F)
1962
-17.8 C (0.0 F)
1963
-18.9 C (-2.0 F)
1964
-13.3 C (8.1 F)
1965
-16.1 C (3.0 F)
1966
-14.4 C (6.1 F)
1967
-14.4 C (6.1 F)
1968
-15.6 C (3.9 F)
1969
-11.7 C (10.9 F)
1970
-15.6 C (3.9 F)
1971
-13.9 C (7.0 F)
1972
-15.0 C (5.0 F)
1973
-14.4 C (6.1 F)
1974
-12.2 C (10.0 F)
1975
-11.7 C (10.9 F)
1976
-16.1 C (3.0 F)
1977
-20.0 C (-4.0 F)
1978
-12.8 C (9.0 F)
1979
-18.3 C (-0.9 F)
1980
-16.7 C (1.9 F)
1981
-17.2 C (1.0 F)
Wettest day (Rx1day)
The wettest day of the year at Trenton, 1913 to 1981. The record is 146.1 mm (5.8 in) in 1975, marked on the chart; the median year is 62.5 mm (2.5 in).
Wettest day (Rx1day) at Trenton by year
Year
Wettest day (Rx1day)
1913
57.2 mm (2.3 in)
1914
40.9 mm (1.6 in)
1915
56.9 mm (2.2 in)
1916
38.4 mm (1.5 in)
1917
42.9 mm (1.7 in)
1918
73.4 mm (2.9 in)
1919
55.1 mm (2.2 in)
1920
62.7 mm (2.5 in)
1921
131.6 mm (5.2 in)
1922
35.1 mm (1.4 in)
1923
37.6 mm (1.5 in)
1924
89.4 mm (3.5 in)
1925
37.1 mm (1.5 in)
1926
59.9 mm (2.4 in)
1927
72.6 mm (2.9 in)
1928
49.3 mm (1.9 in)
1929
54.4 mm (2.1 in)
1930
62.5 mm (2.5 in)
1931
70.6 mm (2.8 in)
1932
74.2 mm (2.9 in)
1933
68.6 mm (2.7 in)
1934
79.2 mm (3.1 in)
1935
51.6 mm (2.0 in)
1936
60.5 mm (2.4 in)
1937
44.5 mm (1.8 in)
1938
70.1 mm (2.8 in)
1939
101.6 mm (4.0 in)
1940
97.5 mm (3.8 in)
1941
76.2 mm (3.0 in)
1942
42.9 mm (1.7 in)
1943
51.8 mm (2.0 in)
1944
78.2 mm (3.1 in)
1945
47.2 mm (1.9 in)
1946
53.3 mm (2.1 in)
1947
55.9 mm (2.2 in)
1948
65.8 mm (2.6 in)
1949
59.4 mm (2.3 in)
1950
94.7 mm (3.7 in)
1951
55.9 mm (2.2 in)
1952
60.2 mm (2.4 in)
1953
72.1 mm (2.8 in)
1954
72.4 mm (2.9 in)
1955
92.5 mm (3.6 in)
1956
51.6 mm (2.0 in)
1957
31.0 mm (1.2 in)
1958
61.0 mm (2.4 in)
1959
66.8 mm (2.6 in)
1960
80.8 mm (3.2 in)
1961
78.0 mm (3.1 in)
1962
75.4 mm (3.0 in)
1963
53.3 mm (2.1 in)
1964
122.7 mm (4.8 in)
1965
64.8 mm (2.6 in)
1966
85.9 mm (3.4 in)
1967
57.9 mm (2.3 in)
1968
112.3 mm (4.4 in)
1969
82.0 mm (3.2 in)
1970
53.8 mm (2.1 in)
1971
121.7 mm (4.8 in)
1972
72.4 mm (2.9 in)
1973
79.0 mm (3.1 in)
1974
61.5 mm (2.4 in)
1975
146.1 mm (5.8 in)
1976
54.4 mm (2.1 in)
1977
69.3 mm (2.7 in)
1978
59.4 mm (2.3 in)
1979
56.4 mm (2.2 in)
1980
67.8 mm (2.7 in)
1981
53.1 mm (2.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Trenton, 1913 to 1981. The record is 206.3 mm (8.1 in) in 1938, marked on the chart; the median year is 91.4 mm (3.6 in).
Wettest five days (Rx5day) at Trenton by year
Year
Wettest five days (Rx5day)
1913
74.1 mm (2.9 in)
1914
57.9 mm (2.3 in)
1915
105.8 mm (4.2 in)
1916
55.4 mm (2.2 in)
1917
48.2 mm (1.9 in)
1918
74.7 mm (2.9 in)
1919
151.9 mm (6.0 in)
1920
91.4 mm (3.6 in)
1921
157.7 mm (6.2 in)
1922
66.9 mm (2.6 in)
1923
68.1 mm (2.7 in)
1924
90.7 mm (3.6 in)
1925
61.2 mm (2.4 in)
1926
128.8 mm (5.1 in)
1927
102.8 mm (4.0 in)
1928
68.6 mm (2.7 in)
1929
134.8 mm (5.3 in)
1930
72.1 mm (2.8 in)
1931
116.8 mm (4.6 in)
1932
76.9 mm (3.0 in)
1933
123.5 mm (4.9 in)
1934
88.9 mm (3.5 in)
1935
133.2 mm (5.2 in)
1936
84.4 mm (3.3 in)
1937
65.1 mm (2.6 in)
1938
206.3 mm (8.1 in)
1939
141.0 mm (5.6 in)
1940
124.9 mm (4.9 in)
1941
148.8 mm (5.9 in)
1942
70.8 mm (2.8 in)
1943
88.7 mm (3.5 in)
1944
171.9 mm (6.8 in)
1945
95.7 mm (3.8 in)
1946
101.2 mm (4.0 in)
1947
90.2 mm (3.6 in)
1948
83.1 mm (3.3 in)
1949
98.0 mm (3.9 in)
1950
100.6 mm (4.0 in)
1951
89.5 mm (3.5 in)
1952
105.5 mm (4.2 in)
1953
132.1 mm (5.2 in)
1954
94.3 mm (3.7 in)
1955
160.1 mm (6.3 in)
1956
78.2 mm (3.1 in)
1957
72.6 mm (2.9 in)
1958
72.7 mm (2.9 in)
1959
116.9 mm (4.6 in)
1960
118.2 mm (4.7 in)
1961
118.1 mm (4.6 in)
1962
94.2 mm (3.7 in)
1963
89.6 mm (3.5 in)
1964
124.5 mm (4.9 in)
1965
76.0 mm (3.0 in)
1966
107.2 mm (4.2 in)
1967
85.4 mm (3.4 in)
1968
117.7 mm (4.6 in)
1969
131.1 mm (5.2 in)
1970
73.1 mm (2.9 in)
1971
205.6 mm (8.1 in)
1972
83.5 mm (3.3 in)
1973
86.9 mm (3.4 in)
1974
76.4 mm (3.0 in)
1975
189.8 mm (7.5 in)
1976
56.2 mm (2.2 in)
1977
108.2 mm (4.3 in)
1978
76.0 mm (3.0 in)
1979
130.6 mm (5.1 in)
1980
73.6 mm (2.9 in)
1981
82.3 mm (3.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Trenton, 1913 to 1981. The record is 38 days in 1949, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Trenton by year
Year
Longest dry spell (CDD)
1913
17 days
1914
25 days
1915
26 days
1916
13 days
1917
22 days
1918
16 days
1919
13 days
1920
13 days
1921
14 days
1922
24 days
1923
16 days
1924
37 days
1925
12 days
1926
14 days
1927
16 days
1928
18 days
1929
11 days
1930
21 days
1931
18 days
1932
13 days
1933
13 days
1934
17 days
1935
21 days
1936
19 days
1937
14 days
1938
15 days
1939
18 days
1940
13 days
1941
22 days
1942
26 days
1943
19 days
1944
25 days
1945
16 days
1946
19 days
1947
32 days
1948
19 days
1949
38 days
1950
16 days
1951
12 days
1952
38 days
1953
18 days
1954
17 days
1955
19 days
1956
13 days
1957
20 days
1958
22 days
1959
19 days
1960
12 days
1961
15 days
1962
16 days
1963
28 days
1964
20 days
1965
16 days
1966
19 days
1967
19 days
1968
26 days
1969
16 days
1970
16 days
1971
20 days
1972
17 days
1973
26 days
1974
13 days
1975
13 days
1976
28 days
1977
17 days
1978
18 days
1979
11 days
1980
24 days
1981
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
67 years with a frost
Across 67 years with a frost, the median last spring frost at Trenton falls on 10 April and the median first autumn frost on 8 November, which leaves a median of 213 days between them.
In 1951 to 1980 the median growing season was 216 days. That is 7 days more than in 1914 to 1943.
Fitted over all years, the growing season changes by +1.7 days per decade at this station.
Frost dates and growing season at Trenton
Measure
Median, all years
Earliest period (1914 to 1943)
Recent period (1951 to 1980)
Recent against earliest
Fitted trend
Last spring frost
10 April
13 April
7 April
6 days earlier
-1.0 days per decade
First autumn frost
8 November
6 November
8 November
2 days later
+0.7 days per decade
Growing days
213 days
209 days
216 days
7 days more
+1.7 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, 1914 to 1981
A day with at least 63.3 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 145.6 mm (5.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Trenton: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
63.3 mm (2.5 in)
5 years
83.2 mm (3.3 in)
10 years
97.2 mm (3.8 in)
25 years
115.8 mm (4.6 in)
50 years
130.4 mm (5.1 in)
100 years
145.6 mm (5.7 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 1914 to 1981.
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: 146.1 mm (5.8 in) in 1975; 131.6 mm (5.2 in) in 1921; 122.7 mm (4.8 in) in 1964.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Trenton standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Trenton 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.