Record envelope, standing records and threshold days for Princeton (USC00156575), Kentucky, United States, with 73 years of record.
Key Facts for Princeton
Princeton (USC00156575) is a weather station in Kentucky, United States at 37.10 latitude and -87.88 longitude, 162 m (531 ft) above sea level.
The station reports from 1893 to 1965, 73 years of record.
1,464 records set at Princeton still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Princeton set a daily record high minimum temperature of 13.9 C (57.0 F) on 23 January 1965.
About the Station
Location: Kentucky, United States, 37.10 latitude, -87.88 longitude.
Elevation: 162 m (531 ft).
Period of record: 1893 to 1965, 73 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 Princeton. 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 Princeton, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
26.7 C (80.1 F)
-31.1 C (-24.0 F)
n/a
n/a
Feb
27.8 C (82.0 F)
-35.6 C (-32.1 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-7.2 C (19.0 F)
n/a
n/a
May
36.7 C (98.1 F)
-1.7 C (28.9 F)
n/a
n/a
Jun
42.8 C (109.0 F)
5.0 C (41.0 F)
n/a
n/a
Jul
43.3 C (109.9 F)
6.1 C (43.0 F)
n/a
n/a
Aug
42.2 C (108.0 F)
4.4 C (39.9 F)
n/a
n/a
Sep
41.1 C (106.0 F)
-2.8 C (27.0 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-10.6 C (12.9 F)
n/a
n/a
Nov
28.3 C (82.9 F)
-22.2 C (-8.0 F)
n/a
n/a
Dec
25.6 C (78.1 F)
-24.4 C (-11.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Princeton still stand. 1895 holds the most, with 50.
Standing records at Princeton by the year they were set
Year set
Standing records
1893
17
1894
26
1895
50
1896
38
1897
42
1898
22
1899
48
1900
23
1902
3
1903
19
1904
12
1905
10
1906
16
1907
19
1916
5
1917
7
1918
40
1919
13
1920
18
1921
30
1922
21
1923
18
1924
34
1925
34
1926
12
1927
40
1928
25
1929
22
1930
33
1931
21
1932
28
1933
28
1934
25
1935
15
1936
32
1937
25
1938
19
1939
26
1940
35
1941
20
1942
29
1943
23
1944
23
1945
21
1946
22
1947
14
1948
19
1949
17
1950
29
1951
24
1952
38
1953
26
1954
22
1955
21
1956
12
1957
11
1958
13
1959
6
1960
25
1961
21
1962
21
1963
28
1964
24
1965
4
All-Time Record Progression
4 new records
4 all-time records were set at Princeton between 8 January 1942 and 27 July 1952. Each dot is a new record.
When Princeton set new all-time records
Date
Kind
Detail
1942-01-08
Record low minimum temperature
Record low minimum temperature -26.7 C (-16.1 F)
1951-02-02
Record low minimum temperature
Record low minimum temperature -35.6 C (-32.1 F)
1952-06-30
Record high maximum temperature
Record high maximum temperature 42.8 C (109.0 F)
1952-07-27
Record high maximum temperature
Record high maximum temperature 43.3 C (109.9 F)
Wettest Day of Each Month
Jun: 177.8 mm (7.0 in)
The wettest day on record for each calendar month at Princeton. The most was 177.8 mm (7.0 in) on 14 June 1900.
Record daily precipitation for each month at Princeton
Month
Record daily precipitation (mm)
Date
Jan
129.5 mm (5.1 in)
21 January 1937
Feb
112.0 mm (4.4 in)
14 February 1949
Mar
130.3 mm (5.1 in)
11 March 1935
Apr
64.5 mm (2.5 in)
19 April 1894
May
81.3 mm (3.2 in)
5 May 1944
Jun
177.8 mm (7.0 in)
14 June 1900
Jul
85.1 mm (3.4 in)
31 July 1938
Aug
125.7 mm (4.9 in)
6 August 1936
Sep
77.7 mm (3.1 in)
19 September 1923
Oct
88.9 mm (3.5 in)
3 October 1902
Nov
97.8 mm (3.9 in)
18 November 1957
Dec
125.7 mm (4.9 in)
27 December 1904
Period of Record Coverage
1893 to 1965
Complete yearUnder 90 percent of days
64 years of record at Princeton, 1893 to 1965. 13 years have data for under 90 percent of days and are left out of rankings: 1894, 1896, 1902, 1903, 1905, 1906, 1907, 1916 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 48 complete years at Princeton, 1893 to 1964. Blue stripes are years cooler than the station's own mean of 14.3 C (57.7 F); red stripes are warmer. The coolest year was 1895, at 12.3 C (54.1 F), and the warmest was 1921, at 16.1 C (60.9 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Princeton as warming stripes, 1893 to 1964
Year
Annual mean temperature
Difference from the station mean
1893
13.2 C
-1.15 C
1895
12.3 C
-2.05 C
1898
14.5 C
+0.23 C
1899
14.0 C
-0.34 C
1900
14.9 C
+0.57 C
1904
13.9 C
-0.43 C
1921
16.1 C
+1.76 C
1922
14.5 C
+0.23 C
1923
14.1 C
-0.25 C
1924
13.2 C
-1.07 C
1925
14.8 C
+0.53 C
1926
13.5 C
-0.80 C
1927
14.3 C
-0.01 C
1928
13.4 C
-0.93 C
1929
13.8 C
-0.54 C
1930
14.5 C
+0.16 C
1931
15.6 C
+1.32 C
1932
15.1 C
+0.76 C
1933
15.7 C
+1.42 C
1934
15.1 C
+0.78 C
1935
14.7 C
+0.43 C
1936
14.9 C
+0.60 C
1937
14.3 C
-0.03 C
1938
15.7 C
+1.39 C
1940
13.7 C
-0.57 C
1941
15.4 C
+1.14 C
1942
14.6 C
+0.31 C
1944
14.4 C
+0.10 C
1945
13.9 C
-0.42 C
1946
14.9 C
+0.60 C
1947
13.6 C
-0.75 C
1948
13.9 C
-0.44 C
1949
14.5 C
+0.20 C
1950
13.5 C
-0.76 C
1951
13.7 C
-0.56 C
1952
14.6 C
+0.27 C
1953
14.9 C
+0.62 C
1954
15.0 C
+0.73 C
1955
14.7 C
+0.39 C
1956
14.7 C
+0.40 C
1957
14.7 C
+0.41 C
1958
13.0 C
-1.26 C
1959
14.3 C
+0.04 C
1960
13.4 C
-0.88 C
1961
13.5 C
-0.82 C
1962
13.8 C
-0.52 C
1963
13.4 C
-0.87 C
1964
14.2 C
-0.11 C
The fitted trend in annual mean temperature here over 1893 to 1964 is 0.02 C (-0.10 to 0.14) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.04 F (-0.18 to 0.26) per decade. The slope is a straight line fitted to 48 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Princeton
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.02 C (-0.10 to 0.14) per decade
0.04 F (-0.18 to 0.26) per decade
1893 to 1964
48
Not clearly different from zero
Mean daily maximum
0.17 C (0.03 to 0.30) per decade
0.3 F (0.1 to 0.5) per decade
1893 to 1964
48
Rise
Mean daily minimum
-0.12 C (-0.28 to 0.04) per decade
-0.2 F (-0.5 to 0.1) per decade
1893 to 1964
48
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 1965
Yearly extremes at Princeton: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
1952
37.5 C (99.5 F)
64
Coldest night (TNn)
-35.6 C (-32.1 F)
1951
-18.3 C (-0.9 F)
64
Wettest day (Rx1day)
177.8 mm (7.0 in)
1900
73.3 mm (2.9 in)
64
Wettest five days (Rx5day)
305.6 mm (12.0 in)
1937
108.3 mm (4.3 in)
64
Longest dry spell (CDD)
61 days
1895
22 days
64
Hottest day (TXx)
The hottest day of the year at Princeton, 1893 to 1965. The record is 43.3 C (109.9 F) in 1952, marked on the chart; the median year is 37.5 C (99.5 F).
Hottest day (TXx) at Princeton by year
Year
Hottest day (TXx)
1893
38.3 C (100.9 F)
1894
40.0 C (104.0 F)
1895
37.2 C (99.0 F)
1896
39.4 C (102.9 F)
1897
39.4 C (102.9 F)
1898
37.2 C (99.0 F)
1899
38.3 C (100.9 F)
1900
38.3 C (100.9 F)
1902
32.8 C (91.0 F)
1903
33.3 C (91.9 F)
1904
35.0 C (95.0 F)
1905
32.8 C (91.0 F)
1906
33.9 C (93.0 F)
1907
31.1 C (88.0 F)
1916
31.7 C (89.1 F)
1917
30.0 C (86.0 F)
1918
42.2 C (108.0 F)
1919
37.8 C (100.0 F)
1920
35.6 C (96.1 F)
1921
37.8 C (100.0 F)
1922
36.7 C (98.1 F)
1923
35.6 C (96.1 F)
1924
36.7 C (98.1 F)
1925
40.0 C (104.0 F)
1926
37.2 C (99.0 F)
1927
35.6 C (96.1 F)
1928
33.9 C (93.0 F)
1929
35.0 C (95.0 F)
1930
41.1 C (106.0 F)
1931
36.7 C (98.1 F)
1932
38.9 C (102.0 F)
1933
40.0 C (104.0 F)
1934
41.1 C (106.0 F)
1935
38.3 C (100.9 F)
1936
41.7 C (107.1 F)
1937
36.7 C (98.1 F)
1938
36.7 C (98.1 F)
1939
40.6 C (105.1 F)
1940
38.9 C (102.0 F)
1941
40.0 C (104.0 F)
1942
39.4 C (102.9 F)
1943
39.4 C (102.9 F)
1944
38.3 C (100.9 F)
1945
37.2 C (99.0 F)
1946
36.1 C (97.0 F)
1947
38.9 C (102.0 F)
1948
37.2 C (99.0 F)
1949
34.4 C (93.9 F)
1950
32.8 C (91.0 F)
1951
37.8 C (100.0 F)
1952
43.3 C (109.9 F)
1953
41.1 C (106.0 F)
1954
41.1 C (106.0 F)
1955
37.8 C (100.0 F)
1956
38.9 C (102.0 F)
1957
36.7 C (98.1 F)
1958
35.0 C (95.0 F)
1959
36.7 C (98.1 F)
1960
37.8 C (100.0 F)
1961
34.4 C (93.9 F)
1962
38.9 C (102.0 F)
1963
37.2 C (99.0 F)
1964
40.6 C (105.1 F)
1965
21.1 C (70.0 F)
Coldest night (TNn)
The coldest night of the year at Princeton, 1893 to 1965. The record is -35.6 C (-32.1 F) in 1951, marked on the chart; the median year is -18.3 C (-0.9 F).
Coldest night (TNn) at Princeton by year
Year
Coldest night (TNn)
1893
-19.4 C (-2.9 F)
1894
-22.8 C (-9.0 F)
1895
-25.6 C (-14.1 F)
1896
-16.1 C (3.0 F)
1897
-22.8 C (-9.0 F)
1898
-20.6 C (-5.1 F)
1899
-25.0 C (-13.0 F)
1900
-21.1 C (-6.0 F)
1902
-15.0 C (5.0 F)
1903
-22.2 C (-8.0 F)
1904
-16.7 C (1.9 F)
1905
-20.6 C (-5.1 F)
1906
-18.3 C (-0.9 F)
1907
-16.7 C (1.9 F)
1916
-11.7 C (10.9 F)
1917
-15.0 C (5.0 F)
1918
-13.3 C (8.1 F)
1919
-15.6 C (3.9 F)
1920
-13.9 C (7.0 F)
1921
-8.3 C (17.1 F)
1922
-10.6 C (12.9 F)
1923
-13.3 C (8.1 F)
1924
-20.0 C (-4.0 F)
1925
-16.7 C (1.9 F)
1926
-16.7 C (1.9 F)
1927
-18.3 C (-0.9 F)
1928
-18.9 C (-2.0 F)
1929
-19.4 C (-2.9 F)
1930
-26.1 C (-15.0 F)
1931
-18.3 C (-0.9 F)
1932
-15.0 C (5.0 F)
1933
-18.3 C (-0.9 F)
1934
-18.9 C (-2.0 F)
1935
-19.4 C (-2.9 F)
1936
-21.7 C (-7.1 F)
1937
-14.4 C (6.1 F)
1938
-15.0 C (5.0 F)
1939
-15.6 C (3.9 F)
1940
-23.9 C (-11.0 F)
1941
-12.8 C (9.0 F)
1942
-26.7 C (-16.1 F)
1943
-24.4 C (-11.9 F)
1944
-15.0 C (5.0 F)
1945
-20.0 C (-4.0 F)
1946
-15.0 C (5.0 F)
1947
-16.7 C (1.9 F)
1948
-20.0 C (-4.0 F)
1949
-12.8 C (9.0 F)
1950
-22.2 C (-8.0 F)
1951
-35.6 C (-32.1 F)
1952
-13.3 C (8.1 F)
1953
-16.1 C (3.0 F)
1954
-16.7 C (1.9 F)
1955
-17.2 C (1.0 F)
1956
-11.7 C (10.9 F)
1957
-17.2 C (1.0 F)
1958
-22.8 C (-9.0 F)
1959
-19.4 C (-2.9 F)
1960
-24.4 C (-11.9 F)
1961
-25.0 C (-13.0 F)
1962
-24.4 C (-11.9 F)
1963
-31.1 C (-24.0 F)
1964
-19.4 C (-2.9 F)
1965
-21.1 C (-6.0 F)
Wettest day (Rx1day)
The wettest day of the year at Princeton, 1893 to 1965. The record is 177.8 mm (7.0 in) in 1900, marked on the chart; the median year is 73.3 mm (2.9 in).
Wettest day (Rx1day) at Princeton by year
Year
Wettest day (Rx1day)
1893
72.9 mm (2.9 in)
1894
64.5 mm (2.5 in)
1895
63.5 mm (2.5 in)
1896
58.4 mm (2.3 in)
1897
67.6 mm (2.7 in)
1898
54.1 mm (2.1 in)
1899
53.3 mm (2.1 in)
1900
177.8 mm (7.0 in)
1902
88.9 mm (3.5 in)
1903
85.1 mm (3.4 in)
1904
125.7 mm (4.9 in)
1905
68.6 mm (2.7 in)
1906
78.0 mm (3.1 in)
1907
88.9 mm (3.5 in)
1916
35.6 mm (1.4 in)
1917
58.4 mm (2.3 in)
1918
68.8 mm (2.7 in)
1919
76.7 mm (3.0 in)
1920
51.1 mm (2.0 in)
1921
50.8 mm (2.0 in)
1922
54.4 mm (2.1 in)
1923
81.3 mm (3.2 in)
1924
87.6 mm (3.4 in)
1925
59.7 mm (2.4 in)
1926
114.3 mm (4.5 in)
1927
73.7 mm (2.9 in)
1928
139.7 mm (5.5 in)
1929
59.9 mm (2.4 in)
1930
80.0 mm (3.1 in)
1931
50.0 mm (2.0 in)
1932
102.4 mm (4.0 in)
1933
78.7 mm (3.1 in)
1934
65.3 mm (2.6 in)
1935
134.9 mm (5.3 in)
1936
125.7 mm (4.9 in)
1937
129.5 mm (5.1 in)
1938
85.1 mm (3.4 in)
1939
92.7 mm (3.6 in)
1940
45.0 mm (1.8 in)
1941
65.5 mm (2.6 in)
1942
75.7 mm (3.0 in)
1943
61.2 mm (2.4 in)
1944
81.3 mm (3.2 in)
1945
60.5 mm (2.4 in)
1946
69.3 mm (2.7 in)
1947
70.6 mm (2.8 in)
1948
74.9 mm (2.9 in)
1949
112.0 mm (4.4 in)
1950
100.6 mm (4.0 in)
1951
98.3 mm (3.9 in)
1952
104.1 mm (4.1 in)
1953
69.9 mm (2.8 in)
1954
62.2 mm (2.4 in)
1955
46.0 mm (1.8 in)
1956
47.2 mm (1.9 in)
1957
97.8 mm (3.9 in)
1958
47.2 mm (1.9 in)
1959
71.1 mm (2.8 in)
1960
79.5 mm (3.1 in)
1961
68.6 mm (2.7 in)
1962
88.9 mm (3.5 in)
1963
101.6 mm (4.0 in)
1964
119.4 mm (4.7 in)
1965
39.4 mm (1.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Princeton, 1893 to 1965. The record is 305.6 mm (12.0 in) in 1937, marked on the chart; the median year is 108.3 mm (4.3 in).
Wettest five days (Rx5day) at Princeton by year
Year
Wettest five days (Rx5day)
1893
113.5 mm (4.5 in)
1894
76.2 mm (3.0 in)
1895
63.5 mm (2.5 in)
1896
95.8 mm (3.8 in)
1897
99.6 mm (3.9 in)
1898
99.1 mm (3.9 in)
1899
93.7 mm (3.7 in)
1900
193.6 mm (7.6 in)
1902
175.3 mm (6.9 in)
1903
114.8 mm (4.5 in)
1904
125.7 mm (4.9 in)
1905
94.0 mm (3.7 in)
1906
170.2 mm (6.7 in)
1907
178.1 mm (7.0 in)
1916
35.6 mm (1.4 in)
1917
99.1 mm (3.9 in)
1918
107.7 mm (4.2 in)
1919
121.2 mm (4.8 in)
1920
63.7 mm (2.5 in)
1921
96.8 mm (3.8 in)
1922
85.9 mm (3.4 in)
1923
109.1 mm (4.3 in)
1924
167.9 mm (6.6 in)
1925
116.0 mm (4.6 in)
1926
176.4 mm (6.9 in)
1927
149.1 mm (5.9 in)
1928
158.0 mm (6.2 in)
1929
71.9 mm (2.8 in)
1930
179.7 mm (7.1 in)
1931
67.3 mm (2.6 in)
1932
149.1 mm (5.9 in)
1933
154.0 mm (6.1 in)
1934
81.3 mm (3.2 in)
1935
194.3 mm (7.6 in)
1936
128.1 mm (5.0 in)
1937
305.6 mm (12.0 in)
1938
155.7 mm (6.1 in)
1939
108.9 mm (4.3 in)
1940
58.5 mm (2.3 in)
1941
77.6 mm (3.1 in)
1942
96.6 mm (3.8 in)
1943
90.4 mm (3.6 in)
1944
88.9 mm (3.5 in)
1945
82.8 mm (3.3 in)
1946
103.4 mm (4.1 in)
1947
102.6 mm (4.0 in)
1948
94.8 mm (3.7 in)
1949
150.8 mm (5.9 in)
1950
128.8 mm (5.1 in)
1951
145.8 mm (5.7 in)
1952
119.1 mm (4.7 in)
1953
106.2 mm (4.2 in)
1954
87.1 mm (3.4 in)
1955
100.6 mm (4.0 in)
1956
128.3 mm (5.1 in)
1957
156.7 mm (6.2 in)
1958
95.0 mm (3.7 in)
1959
106.4 mm (4.2 in)
1960
123.4 mm (4.9 in)
1961
114.4 mm (4.5 in)
1962
106.4 mm (4.2 in)
1963
132.1 mm (5.2 in)
1964
257.8 mm (10.1 in)
1965
44.2 mm (1.7 in)
Longest dry spell (CDD)
The longest dry spell of the year at Princeton, 1893 to 1965. The record is 61 days in 1895, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Princeton by year
Year
Longest dry spell (CDD)
1893
28 days
1894
19 days
1895
61 days
1896
25 days
1897
47 days
1898
20 days
1899
35 days
1900
27 days
1902
12 days
1903
24 days
1904
22 days
1905
14 days
1906
26 days
1907
15 days
1916
20 days
1917
19 days
1918
24 days
1919
22 days
1920
27 days
1921
30 days
1922
22 days
1923
27 days
1924
25 days
1925
20 days
1926
17 days
1927
20 days
1928
31 days
1929
15 days
1930
21 days
1931
22 days
1932
12 days
1933
15 days
1934
15 days
1935
17 days
1936
21 days
1937
10 days
1938
30 days
1939
36 days
1940
15 days
1941
28 days
1942
25 days
1943
30 days
1944
37 days
1945
16 days
1946
34 days
1947
21 days
1948
18 days
1949
20 days
1950
24 days
1951
22 days
1952
29 days
1953
41 days
1954
22 days
1955
18 days
1956
31 days
1957
23 days
1958
32 days
1959
16 days
1960
23 days
1961
17 days
1962
20 days
1963
47 days
1964
23 days
1965
6 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
48 years with a frost
Across 48 years with a frost, the median last spring frost at Princeton falls on 17 April and the median first autumn frost on 20 October, which leaves a median of 187 days between them.
Fitted over all years, the growing season changes by -2.9 days per decade at this station.
Frost dates and growing season at Princeton
Measure
Median, all years
Earliest period
Recent period (1933 to 1964)
Recent against earliest
Fitted trend
Last spring frost
17 April
n/a
18 April
n/a
+2.5 days per decade
First autumn frost
20 October
n/a
18 October
n/a
-0.5 days per decade
Growing days
187 days
n/a
182 days
n/a
-2.9 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
47 years, 1893 to 1964
A day with at least 77.6 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 178.9 mm (7.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Princeton: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
77.6 mm (3.1 in)
5 years
103.0 mm (4.1 in)
10 years
120.4 mm (4.7 in)
25 years
143.3 mm (5.6 in)
50 years
160.9 mm (6.3 in)
Longer than the 47 years of record
100 years
178.9 mm (7.0 in)
Longer than the 47 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, 47 years of values from 1893 to 1964.
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: 177.8 mm (7.0 in) in 1900; 139.7 mm (5.5 in) in 1928; 134.9 mm (5.3 in) in 1935.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Princeton, at 1932. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1932 ran 0.3 C (0.5 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Princeton, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1932
+0.3
+0.5
possible
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Princeton standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Princeton 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.