Record envelope, standing records and threshold days for Freeport (USC00113257), Illinois, United States, with 65 years of record.
Key Facts for Freeport
Freeport (USC00113257) is a weather station in Illinois, United States at 42.30 latitude and -89.62 longitude, 238 m (781 ft) above sea level.
The station reports from 1909 to 1973, 65 years of record.
1,464 records set at Freeport still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Freeport set a daily record high minimum temperature of 22.8 C (73.0 F) on 8 August 1973.
About the Station
Location: Illinois, United States, 42.30 latitude, -89.62 longitude.
Elevation: 238 m (781 ft).
Period of record: 1909 to 1973, 65 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 Freeport. 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 Freeport, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
15.6 C (60.1 F)
-33.9 C (-29.0 F)
n/a
n/a
Feb
19.4 C (66.9 F)
-32.2 C (-26.0 F)
n/a
n/a
Mar
28.3 C (82.9 F)
-29.4 C (-20.9 F)
n/a
n/a
Apr
33.9 C (93.0 F)
-12.8 C (9.0 F)
n/a
n/a
May
41.1 C (106.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jun
41.1 C (106.0 F)
0.6 C (33.1 F)
n/a
n/a
Jul
44.4 C (111.9 F)
5.0 C (41.0 F)
n/a
n/a
Aug
38.9 C (102.0 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
38.3 C (100.9 F)
-5.0 C (23.0 F)
n/a
n/a
Oct
32.2 C (90.0 F)
-14.4 C (6.1 F)
n/a
n/a
Nov
25.6 C (78.1 F)
-25.6 C (-14.1 F)
n/a
n/a
Dec
18.9 C (66.0 F)
-33.9 C (-29.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Freeport still stand. 1936 holds the most, with 63.
Standing records at Freeport by the year they were set
Year set
Standing records
1909
30
1910
26
1911
15
1912
33
1913
28
1914
24
1915
33
1916
26
1917
23
1918
18
1919
14
1920
25
1921
22
1922
10
1923
13
1924
24
1925
31
1926
14
1927
22
1928
22
1929
24
1930
47
1931
39
1932
19
1933
26
1934
33
1935
22
1936
63
1937
20
1938
20
1939
31
1940
19
1941
18
1942
23
1943
16
1944
27
1945
28
1946
23
1947
15
1948
16
1949
21
1950
24
1951
23
1952
22
1953
19
1954
17
1955
19
1956
13
1957
10
1958
16
1959
23
1960
31
1961
11
1962
25
1963
36
1964
23
1965
22
1966
17
1967
27
1968
12
1969
5
1970
16
1971
16
1972
15
1973
19
All-Time Record Progression
1 new records
1 all-time records were set at Freeport between 27 December 1950 and 27 December 1950. Each dot is a new record.
When Freeport set new all-time records
Date
Kind
Detail
1950-12-27
Record low minimum temperature
Record low minimum temperature -33.9 C (-29.0 F)
Wettest Day of Each Month
Jun: 157.2 mm (6.2 in)
The wettest day on record for each calendar month at Freeport. The most was 157.2 mm (6.2 in) on 11 June 1926.
Record daily precipitation for each month at Freeport
Month
Record daily precipitation (mm)
Date
Jan
57.2 mm (2.3 in)
12 January 1960
Feb
47.0 mm (1.9 in)
27 February 1948
Mar
56.9 mm (2.2 in)
16 March 1919
Apr
77.0 mm (3.0 in)
16 April 1972
May
57.7 mm (2.3 in)
10 May 1948
Jun
157.2 mm (6.2 in)
11 June 1926
Jul
150.1 mm (5.9 in)
6 July 1923
Aug
77.0 mm (3.0 in)
2 August 1942
Sep
124.5 mm (4.9 in)
13 September 1961
Oct
73.4 mm (2.9 in)
10 October 1954
Nov
94.5 mm (3.7 in)
17 November 1952
Dec
50.8 mm (2.0 in)
15 December 1971
Period of Record Coverage
1909 to 1973
Complete yearUnder 90 percent of days
65 years of record at Freeport, 1909 to 1973. 5 years have data for under 90 percent of days and are left out of rankings: 1918, 1921, 1923, 1927, 1973.
Cooler than the station meanWarmer than the station mean
One stripe for each of 55 complete years at Freeport, 1909 to 1972. Blue stripes are years cooler than the station's own mean of 8.8 C (47.8 F); red stripes are warmer. The coolest year was 1912, at 7.1 C (44.7 F), and the warmest was 1931, at 11.0 C (51.8 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Freeport as warming stripes, 1909 to 1972
Year
Annual mean temperature
Difference from the station mean
1909
8.1 C
-0.69 C
1910
8.4 C
-0.40 C
1912
7.1 C
-1.70 C
1913
9.2 C
+0.48 C
1914
8.7 C
-0.10 C
1915
7.7 C
-1.08 C
1917
7.2 C
-1.57 C
1919
9.4 C
+0.62 C
1920
8.9 C
+0.18 C
1924
7.4 C
-1.35 C
1925
8.7 C
-0.09 C
1928
9.2 C
+0.47 C
1929
7.8 C
-0.93 C
1930
9.3 C
+0.56 C
1931
11.0 C
+2.23 C
1932
9.1 C
+0.36 C
1934
10.0 C
+1.19 C
1935
8.6 C
-0.18 C
1936
8.3 C
-0.43 C
1937
8.3 C
-0.46 C
1938
10.0 C
+1.28 C
1939
10.1 C
+1.33 C
1940
8.4 C
-0.39 C
1941
10.1 C
+1.38 C
1942
8.8 C
+0.06 C
1943
8.1 C
-0.69 C
1944
9.1 C
+0.35 C
1945
8.2 C
-0.55 C
1946
10.0 C
+1.20 C
1947
8.8 C
+0.07 C
1948
8.7 C
-0.03 C
1949
9.2 C
+0.41 C
1950
7.5 C
-1.31 C
1951
7.7 C
-1.07 C
1952
9.3 C
+0.51 C
1953
9.7 C
+0.91 C
1954
9.7 C
+0.91 C
1955
9.1 C
+0.33 C
1956
9.1 C
+0.38 C
1957
8.8 C
+0.00 C
1958
8.0 C
-0.75 C
1959
8.5 C
-0.23 C
1960
8.1 C
-0.64 C
1961
8.8 C
+0.01 C
1962
8.2 C
-0.60 C
1963
8.5 C
-0.24 C
1964
9.5 C
+0.73 C
1965
9.0 C
+0.23 C
1966
8.5 C
-0.31 C
1967
8.2 C
-0.56 C
1968
9.1 C
+0.36 C
1969
8.5 C
-0.26 C
1970
8.9 C
+0.14 C
1971
9.2 C
+0.45 C
1972
8.2 C
-0.54 C
The fitted trend in annual mean temperature here over 1909 to 1972 is 0.1 C (-0.1 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.3) per decade. The slope is a straight line fitted to 55 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Freeport
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.3) per decade
1909 to 1972
55
Not clearly different from zero
Mean daily maximum
-0.05 C (-0.20 to 0.10) per decade
-0.1 F (-0.4 to 0.2) per decade
1909 to 1972
55
Not clearly different from zero
Mean daily minimum
0.15 C (0.04 to 0.26) per decade
0.3 F (0.1 to 0.5) per decade
1909 to 1972
55
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
1909 to 1973
Yearly extremes at Freeport: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
44.4 C (111.9 F)
1936
35.6 C (96.1 F)
65
Coldest night (TNn)
-33.9 C (-29.0 F)
1950
-27.8 C (-18.0 F)
65
Wettest day (Rx1day)
157.2 mm (6.2 in)
1926
60.7 mm (2.4 in)
65
Wettest five days (Rx5day)
195.0 mm (7.7 in)
1926
95.3 mm (3.8 in)
65
Longest dry spell (CDD)
55 days
1952
22 days
65
Hottest day (TXx)
The hottest day of the year at Freeport, 1909 to 1973. The record is 44.4 C (111.9 F) in 1936, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Freeport by year
Year
Hottest day (TXx)
1909
35.0 C (95.0 F)
1910
37.2 C (99.0 F)
1911
37.8 C (100.0 F)
1912
35.6 C (96.1 F)
1913
38.9 C (102.0 F)
1914
35.6 C (96.1 F)
1915
31.7 C (89.1 F)
1916
38.9 C (102.0 F)
1917
37.2 C (99.0 F)
1918
31.1 C (88.0 F)
1919
37.2 C (99.0 F)
1920
36.1 C (97.0 F)
1921
38.9 C (102.0 F)
1922
36.1 C (97.0 F)
1923
35.6 C (96.1 F)
1924
33.3 C (91.9 F)
1925
36.7 C (98.1 F)
1926
35.0 C (95.0 F)
1927
35.6 C (96.1 F)
1928
34.4 C (93.9 F)
1929
35.6 C (96.1 F)
1930
38.3 C (100.9 F)
1931
39.4 C (102.9 F)
1932
36.7 C (98.1 F)
1933
38.3 C (100.9 F)
1934
41.1 C (106.0 F)
1935
36.7 C (98.1 F)
1936
44.4 C (111.9 F)
1937
37.8 C (100.0 F)
1938
34.4 C (93.9 F)
1939
38.3 C (100.9 F)
1940
39.4 C (102.9 F)
1941
38.3 C (100.9 F)
1942
33.9 C (93.0 F)
1943
34.4 C (93.9 F)
1944
35.6 C (96.1 F)
1945
36.1 C (97.0 F)
1946
35.0 C (95.0 F)
1947
37.2 C (99.0 F)
1948
36.1 C (97.0 F)
1949
36.1 C (97.0 F)
1950
32.2 C (90.0 F)
1951
33.3 C (91.9 F)
1952
35.0 C (95.0 F)
1953
36.1 C (97.0 F)
1954
34.4 C (93.9 F)
1955
36.1 C (97.0 F)
1956
34.4 C (93.9 F)
1957
34.4 C (93.9 F)
1958
32.8 C (91.0 F)
1959
33.3 C (91.9 F)
1960
33.3 C (91.9 F)
1961
32.8 C (91.0 F)
1962
33.3 C (91.9 F)
1963
36.1 C (97.0 F)
1964
34.4 C (93.9 F)
1965
35.6 C (96.1 F)
1966
35.6 C (96.1 F)
1967
32.8 C (91.0 F)
1968
33.3 C (91.9 F)
1969
32.8 C (91.0 F)
1970
33.9 C (93.0 F)
1971
34.4 C (93.9 F)
1972
33.9 C (93.0 F)
1973
33.3 C (91.9 F)
Coldest night (TNn)
The coldest night of the year at Freeport, 1909 to 1973. The record is -33.9 C (-29.0 F) in 1950, marked on the chart; the median year is -27.8 C (-18.0 F).
Coldest night (TNn) at Freeport by year
Year
Coldest night (TNn)
1909
-28.3 C (-18.9 F)
1910
-31.7 C (-25.1 F)
1911
-23.3 C (-9.9 F)
1912
-31.1 C (-24.0 F)
1913
-24.4 C (-11.9 F)
1914
-32.2 C (-26.0 F)
1915
-32.8 C (-27.0 F)
1916
-31.1 C (-24.0 F)
1917
-28.9 C (-20.0 F)
1918
-29.4 C (-20.9 F)
1919
-30.6 C (-23.1 F)
1920
-25.6 C (-14.1 F)
1921
-21.1 C (-6.0 F)
1922
-23.3 C (-9.9 F)
1923
-24.4 C (-11.9 F)
1924
-31.7 C (-25.1 F)
1925
-25.6 C (-14.1 F)
1926
-25.0 C (-13.0 F)
1927
-28.9 C (-20.0 F)
1928
-23.3 C (-9.9 F)
1929
-32.2 C (-26.0 F)
1930
-32.8 C (-27.0 F)
1931
-23.9 C (-11.0 F)
1932
-26.7 C (-16.1 F)
1933
-32.2 C (-26.0 F)
1934
-22.8 C (-9.0 F)
1935
-26.7 C (-16.1 F)
1936
-32.8 C (-27.0 F)
1937
-21.1 C (-6.0 F)
1938
-21.7 C (-7.1 F)
1939
-18.9 C (-2.0 F)
1940
-31.1 C (-24.0 F)
1941
-23.3 C (-9.9 F)
1942
-31.1 C (-24.0 F)
1943
-32.8 C (-27.0 F)
1944
-31.1 C (-24.0 F)
1945
-27.8 C (-18.0 F)
1946
-26.7 C (-16.1 F)
1947
-30.0 C (-22.0 F)
1948
-27.2 C (-17.0 F)
1949
-30.6 C (-23.1 F)
1950
-33.9 C (-29.0 F)
1951
-33.9 C (-29.0 F)
1952
-24.4 C (-11.9 F)
1953
-23.9 C (-11.0 F)
1954
-25.6 C (-14.1 F)
1955
-25.6 C (-14.1 F)
1956
-23.9 C (-11.0 F)
1957
-28.3 C (-18.9 F)
1958
-27.8 C (-18.0 F)
1959
-32.2 C (-26.0 F)
1960
-29.4 C (-20.9 F)
1961
-25.0 C (-13.0 F)
1962
-29.4 C (-20.9 F)
1963
-31.1 C (-24.0 F)
1964
-23.3 C (-9.9 F)
1965
-27.8 C (-18.0 F)
1966
-30.0 C (-22.0 F)
1967
-28.9 C (-20.0 F)
1968
-27.8 C (-18.0 F)
1969
-24.4 C (-11.9 F)
1970
-28.9 C (-20.0 F)
1971
-26.7 C (-16.1 F)
1972
-28.9 C (-20.0 F)
1973
-27.2 C (-17.0 F)
Wettest day (Rx1day)
The wettest day of the year at Freeport, 1909 to 1973. The record is 157.2 mm (6.2 in) in 1926, marked on the chart; the median year is 60.7 mm (2.4 in).
Wettest day (Rx1day) at Freeport by year
Year
Wettest day (Rx1day)
1909
76.2 mm (3.0 in)
1910
52.1 mm (2.1 in)
1911
76.2 mm (3.0 in)
1912
57.2 mm (2.3 in)
1913
55.9 mm (2.2 in)
1914
55.9 mm (2.2 in)
1915
71.1 mm (2.8 in)
1916
73.7 mm (2.9 in)
1917
29.7 mm (1.2 in)
1918
49.5 mm (1.9 in)
1919
67.3 mm (2.6 in)
1920
42.9 mm (1.7 in)
1921
45.7 mm (1.8 in)
1922
76.2 mm (3.0 in)
1923
150.1 mm (5.9 in)
1924
59.7 mm (2.4 in)
1925
55.9 mm (2.2 in)
1926
157.2 mm (6.2 in)
1927
43.7 mm (1.7 in)
1928
69.9 mm (2.8 in)
1929
45.5 mm (1.8 in)
1930
66.0 mm (2.6 in)
1931
60.5 mm (2.4 in)
1932
45.7 mm (1.8 in)
1933
86.4 mm (3.4 in)
1934
34.3 mm (1.4 in)
1935
57.4 mm (2.3 in)
1936
51.1 mm (2.0 in)
1937
76.7 mm (3.0 in)
1938
60.7 mm (2.4 in)
1939
36.1 mm (1.4 in)
1940
51.3 mm (2.0 in)
1941
93.5 mm (3.7 in)
1942
95.5 mm (3.8 in)
1943
69.6 mm (2.7 in)
1944
51.3 mm (2.0 in)
1945
76.7 mm (3.0 in)
1946
72.6 mm (2.9 in)
1947
102.1 mm (4.0 in)
1948
57.7 mm (2.3 in)
1949
39.6 mm (1.6 in)
1950
69.6 mm (2.7 in)
1951
123.2 mm (4.9 in)
1952
94.5 mm (3.7 in)
1953
34.3 mm (1.4 in)
1954
73.4 mm (2.9 in)
1955
72.4 mm (2.9 in)
1956
80.8 mm (3.2 in)
1957
52.1 mm (2.1 in)
1958
58.4 mm (2.3 in)
1959
82.6 mm (3.3 in)
1960
69.3 mm (2.7 in)
1961
124.5 mm (4.9 in)
1962
50.3 mm (2.0 in)
1963
56.4 mm (2.2 in)
1964
45.7 mm (1.8 in)
1965
65.5 mm (2.6 in)
1966
28.7 mm (1.1 in)
1967
76.7 mm (3.0 in)
1968
54.4 mm (2.1 in)
1969
78.7 mm (3.1 in)
1970
68.6 mm (2.7 in)
1971
50.8 mm (2.0 in)
1972
108.0 mm (4.3 in)
1973
44.5 mm (1.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Freeport, 1909 to 1973. The record is 195.0 mm (7.7 in) in 1926, marked on the chart; the median year is 95.3 mm (3.8 in).
Wettest five days (Rx5day) at Freeport by year
Year
Wettest five days (Rx5day)
1909
147.0 mm (5.8 in)
1910
59.5 mm (2.3 in)
1911
104.9 mm (4.1 in)
1912
99.5 mm (3.9 in)
1913
100.3 mm (3.9 in)
1914
95.8 mm (3.8 in)
1915
78.7 mm (3.1 in)
1916
135.4 mm (5.3 in)
1917
54.6 mm (2.1 in)
1918
65.8 mm (2.6 in)
1919
102.2 mm (4.0 in)
1920
64.5 mm (2.5 in)
1921
61.0 mm (2.4 in)
1922
115.9 mm (4.6 in)
1923
152.6 mm (6.0 in)
1924
108.1 mm (4.3 in)
1925
89.4 mm (3.5 in)
1926
195.0 mm (7.7 in)
1927
105.9 mm (4.2 in)
1928
78.8 mm (3.1 in)
1929
65.5 mm (2.6 in)
1930
88.4 mm (3.5 in)
1931
77.2 mm (3.0 in)
1932
76.9 mm (3.0 in)
1933
124.0 mm (4.9 in)
1934
73.8 mm (2.9 in)
1935
92.1 mm (3.6 in)
1936
59.9 mm (2.4 in)
1937
125.2 mm (4.9 in)
1938
96.5 mm (3.8 in)
1939
37.4 mm (1.5 in)
1940
72.4 mm (2.9 in)
1941
113.6 mm (4.5 in)
1942
148.7 mm (5.9 in)
1943
81.5 mm (3.2 in)
1944
77.0 mm (3.0 in)
1945
95.3 mm (3.8 in)
1946
78.9 mm (3.1 in)
1947
110.5 mm (4.4 in)
1948
97.6 mm (3.8 in)
1949
61.5 mm (2.4 in)
1950
85.8 mm (3.4 in)
1951
135.4 mm (5.3 in)
1952
99.3 mm (3.9 in)
1953
65.1 mm (2.6 in)
1954
89.6 mm (3.5 in)
1955
74.2 mm (2.9 in)
1956
116.4 mm (4.6 in)
1957
101.6 mm (4.0 in)
1958
88.4 mm (3.5 in)
1959
127.3 mm (5.0 in)
1960
96.5 mm (3.8 in)
1961
194.9 mm (7.7 in)
1962
52.3 mm (2.1 in)
1963
68.8 mm (2.7 in)
1964
52.2 mm (2.1 in)
1965
102.4 mm (4.0 in)
1966
50.9 mm (2.0 in)
1967
122.2 mm (4.8 in)
1968
109.5 mm (4.3 in)
1969
126.7 mm (5.0 in)
1970
130.8 mm (5.1 in)
1971
56.2 mm (2.2 in)
1972
132.6 mm (5.2 in)
1973
77.2 mm (3.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Freeport, 1909 to 1973. The record is 55 days in 1952, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Freeport by year
Year
Longest dry spell (CDD)
1909
18 days
1910
32 days
1911
23 days
1912
26 days
1913
25 days
1914
21 days
1915
29 days
1916
21 days
1917
23 days
1918
22 days
1919
23 days
1920
33 days
1921
21 days
1922
23 days
1923
21 days
1924
26 days
1925
35 days
1926
14 days
1927
23 days
1928
18 days
1929
21 days
1930
18 days
1931
20 days
1932
23 days
1933
38 days
1934
24 days
1935
18 days
1936
26 days
1937
14 days
1938
23 days
1939
29 days
1940
18 days
1941
22 days
1942
28 days
1943
27 days
1944
25 days
1945
22 days
1946
22 days
1947
22 days
1948
20 days
1949
18 days
1950
30 days
1951
16 days
1952
55 days
1953
24 days
1954
19 days
1955
22 days
1956
18 days
1957
29 days
1958
27 days
1959
23 days
1960
13 days
1961
14 days
1962
18 days
1963
16 days
1964
23 days
1965
19 days
1966
19 days
1967
19 days
1968
30 days
1969
23 days
1970
15 days
1971
15 days
1972
16 days
1973
15 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
55 years with a frost
Across 55 years with a frost, the median last spring frost at Freeport falls on 7 May and the median first autumn frost on 2 October, which leaves a median of 152 days between them.
Fitted over all years, the growing season changes by +2.6 days per decade at this station.
Frost dates and growing season at Freeport
Measure
Median, all years
Earliest period
Recent period (1943 to 1972)
Recent against earliest
Fitted trend
Last spring frost
7 May
n/a
5 May
n/a
-1.9 days per decade
First autumn frost
2 October
n/a
2 October
n/a
+0.7 days per decade
Growing days
152 days
n/a
155 days
n/a
+2.6 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
62 years, 1909 to 1972
A day with at least 63.1 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 154.3 mm (6.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Freeport: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
63.1 mm (2.5 in)
5 years
85.0 mm (3.3 in)
10 years
100.5 mm (4.0 in)
25 years
121.2 mm (4.8 in)
50 years
137.4 mm (5.4 in)
100 years
154.3 mm (6.1 in)
Longer than the 62 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, 62 years of values from 1909 to 1972.
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: 157.2 mm (6.2 in) in 1926; 150.1 mm (5.9 in) in 1923; 124.5 mm (4.9 in) in 1961.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Freeport, at 1942 and 1960. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1942 ran 0.2 C (0.4 F) lower than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1960 ran 0.2 C (0.4 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Freeport, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1942
-0.2
-0.4
possible
5
1960
+0.2
+0.4
likely
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 Freeport standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Freeport 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.