Record envelope, standing records and threshold days for Calhoun (1) (USC00151225), Kentucky, United States, with 41 years of record.
Key Facts for Calhoun (1)
Calhoun (1) (USC00151225) is a weather station in Kentucky, United States at 37.53 latitude and -87.25 longitude, n/a above sea level.
The station reports from 1903 to 1943, 41 years of record.
1,464 records set at Calhoun (1) still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Calhoun (1) set a daily record high minimum temperature of 22.2 C (72.0 F) on 29 April 1943.
About the Station
Location: Kentucky, United States, 37.53 latitude, -87.25 longitude.
Elevation: n/a.
Period of record: 1903 to 1943, 41 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 Calhoun (1). 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 Calhoun (1), 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)
-27.8 C (-18.0 F)
n/a
n/a
Feb
26.1 C (79.0 F)
-22.8 C (-9.0 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-16.7 C (1.9 F)
n/a
n/a
Apr
32.8 C (91.0 F)
-4.4 C (24.1 F)
n/a
n/a
May
36.7 C (98.1 F)
1.7 C (35.1 F)
n/a
n/a
Jun
40.0 C (104.0 F)
4.4 C (39.9 F)
n/a
n/a
Jul
41.7 C (107.1 F)
10.6 C (51.1 F)
n/a
n/a
Aug
42.8 C (109.0 F)
7.2 C (45.0 F)
n/a
n/a
Sep
40.0 C (104.0 F)
0.0 C (32.0 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-6.7 C (19.9 F)
n/a
n/a
Nov
28.3 C (82.9 F)
-12.8 C (9.0 F)
n/a
n/a
Dec
22.8 C (73.0 F)
-22.8 C (-9.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Calhoun (1) still stand. 1917 holds the most, with 61.
Standing records at Calhoun (1) by the year they were set
Year set
Standing records
1903
39
1904
29
1905
33
1906
35
1907
40
1908
33
1909
36
1910
34
1911
53
1912
34
1913
39
1914
50
1915
38
1916
39
1917
61
1918
58
1919
18
1920
28
1921
27
1922
16
1923
23
1924
48
1925
48
1926
27
1927
45
1928
28
1929
45
1930
50
1931
37
1932
37
1933
27
1934
29
1935
35
1936
57
1937
22
1938
15
1939
34
1940
43
1941
30
1942
30
1943
14
Wettest Day of Each Month
Aug: 154.4 mm (6.1 in)
The wettest day on record for each calendar month at Calhoun (1). The most was 154.4 mm (6.1 in) on 26 August 1918.
Record daily precipitation for each month at Calhoun (1)
Month
Record daily precipitation (mm)
Date
Jan
111.3 mm (4.4 in)
21 January 1937
Feb
99.1 mm (3.9 in)
23 February 1909
Mar
101.6 mm (4.0 in)
11 March 1935
Apr
81.5 mm (3.2 in)
16 April 1939
May
66.0 mm (2.6 in)
7 May 1915
Jun
126.2 mm (5.0 in)
12 June 1923
Jul
71.9 mm (2.8 in)
26 July 1933
Aug
154.4 mm (6.1 in)
26 August 1918
Sep
62.2 mm (2.4 in)
24 September 1921
Oct
122.4 mm (4.8 in)
6 October 1910
Nov
64.0 mm (2.5 in)
3 November 1936
Dec
83.8 mm (3.3 in)
16 December 1915
Period of Record Coverage
1903 to 1943
Complete yearUnder 90 percent of days
41 years of record at Calhoun (1), 1903 to 1943. 5 years have data for under 90 percent of days and are left out of rankings: 1903, 1933, 1937, 1938, 1943.
Cooler than the station meanWarmer than the station mean
One stripe for each of 30 complete years at Calhoun (1), 1904 to 1942. Blue stripes are years cooler than the station's own mean of 14.6 C (58.3 F); red stripes are warmer. The coolest year was 1917, at 12.7 C (54.9 F), and the warmest was 1921, at 16.3 C (61.4 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Calhoun (1) as warming stripes, 1904 to 1942
Year
Annual mean temperature
Difference from the station mean
1904
13.6 C
-0.99 C
1905
14.5 C
-0.12 C
1906
14.7 C
+0.10 C
1908
15.5 C
+0.88 C
1909
15.0 C
+0.37 C
1910
14.1 C
-0.46 C
1912
13.5 C
-1.07 C
1913
15.3 C
+0.70 C
1914
15.0 C
+0.39 C
1916
14.4 C
-0.17 C
1917
12.7 C
-1.86 C
1918
14.2 C
-0.37 C
1919
14.8 C
+0.24 C
1920
13.6 C
-1.04 C
1921
16.3 C
+1.72 C
1922
15.4 C
+0.79 C
1923
14.5 C
-0.06 C
1925
14.6 C
-0.05 C
1926
13.8 C
-0.82 C
1927
15.4 C
+0.76 C
1928
14.2 C
-0.45 C
1929
14.2 C
-0.43 C
1930
14.9 C
+0.31 C
1931
15.9 C
+1.33 C
1932
15.0 C
+0.36 C
1934
15.1 C
+0.47 C
1936
14.9 C
+0.33 C
1940
13.4 C
-1.20 C
1941
15.0 C
+0.40 C
1942
14.6 C
0.00 C
The fitted trend in annual mean temperature here over 1904 to 1942 is 0.1 C (-0.2 to 0.4) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.3 to 0.6) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Calhoun (1)
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.2 to 0.4) per decade
0.1 F (-0.3 to 0.6) per decade
1904 to 1942
30
Not clearly different from zero
Mean daily maximum
0.02 C (-0.26 to 0.29) per decade
0.03 F (-0.46 to 0.53) per decade
1904 to 1942
30
Not clearly different from zero
Mean daily minimum
0.1 C (-0.2 to 0.5) per decade
0.3 F (-0.3 to 0.8) per decade
1904 to 1942
30
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
1903 to 1943
Yearly extremes at Calhoun (1): the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.8 C (109.0 F)
1930
37.8 C (100.0 F)
41
Coldest night (TNn)
-27.8 C (-18.0 F)
1918
-17.8 C (0.0 F)
41
Wettest day (Rx1day)
154.4 mm (6.1 in)
1918
65.0 mm (2.6 in)
41
Wettest five days (Rx5day)
318.5 mm (12.5 in)
1937
107.0 mm (4.2 in)
41
Longest dry spell (CDD)
37 days
1925
19 days
41
Hottest day (TXx)
The hottest day of the year at Calhoun (1), 1903 to 1943. The record is 42.8 C (109.0 F) in 1930, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Calhoun (1) by year
Year
Hottest day (TXx)
1903
36.1 C (97.0 F)
1904
36.1 C (97.0 F)
1905
38.3 C (100.9 F)
1906
36.1 C (97.0 F)
1907
37.8 C (100.0 F)
1908
37.2 C (99.0 F)
1909
40.0 C (104.0 F)
1910
37.2 C (99.0 F)
1911
38.3 C (100.9 F)
1912
37.2 C (99.0 F)
1913
39.4 C (102.9 F)
1914
41.1 C (106.0 F)
1915
37.2 C (99.0 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
36.7 C (98.1 F)
1921
39.4 C (102.9 F)
1922
36.7 C (98.1 F)
1923
36.1 C (97.0 F)
1924
36.7 C (98.1 F)
1925
39.4 C (102.9 F)
1926
37.8 C (100.0 F)
1927
36.7 C (98.1 F)
1928
35.0 C (95.0 F)
1929
37.2 C (99.0 F)
1930
42.8 C (109.0 F)
1931
40.0 C (104.0 F)
1932
38.3 C (100.9 F)
1933
38.9 C (102.0 F)
1934
40.6 C (105.1 F)
1935
38.3 C (100.9 F)
1936
40.6 C (105.1 F)
1937
35.0 C (95.0 F)
1938
36.7 C (98.1 F)
1939
40.0 C (104.0 F)
1940
38.3 C (100.9 F)
1941
40.0 C (104.0 F)
1942
40.0 C (104.0 F)
1943
29.4 C (84.9 F)
Coldest night (TNn)
The coldest night of the year at Calhoun (1), 1903 to 1943. The record is -27.8 C (-18.0 F) in 1918, marked on the chart; the median year is -17.8 C (0.0 F).
Coldest night (TNn) at Calhoun (1) by year
Year
Coldest night (TNn)
1903
-15.0 C (5.0 F)
1904
-18.9 C (-2.0 F)
1905
-20.6 C (-5.1 F)
1906
-20.0 C (-4.0 F)
1907
-16.1 C (3.0 F)
1908
-12.8 C (9.0 F)
1909
-18.9 C (-2.0 F)
1910
-21.1 C (-6.0 F)
1911
-23.3 C (-9.9 F)
1912
-26.1 C (-15.0 F)
1913
-13.3 C (8.1 F)
1914
-15.0 C (5.0 F)
1915
-15.0 C (5.0 F)
1916
-20.0 C (-4.0 F)
1917
-22.8 C (-9.0 F)
1918
-27.8 C (-18.0 F)
1919
-15.0 C (5.0 F)
1920
-15.0 C (5.0 F)
1921
-11.7 C (10.9 F)
1922
-10.6 C (12.9 F)
1923
-13.3 C (8.1 F)
1924
-20.6 C (-5.1 F)
1925
-16.7 C (1.9 F)
1926
-18.3 C (-0.9 F)
1927
-17.8 C (0.0 F)
1928
-20.6 C (-5.1 F)
1929
-18.9 C (-2.0 F)
1930
-23.3 C (-9.9 F)
1931
-11.7 C (10.9 F)
1932
-15.0 C (5.0 F)
1933
-17.8 C (0.0 F)
1934
-22.8 C (-9.0 F)
1935
-15.6 C (3.9 F)
1936
-21.1 C (-6.0 F)
1937
-7.8 C (18.0 F)
1938
-13.9 C (7.0 F)
1939
-17.2 C (1.0 F)
1940
-24.4 C (-11.9 F)
1941
-11.7 C (10.9 F)
1942
-23.9 C (-11.0 F)
1943
-17.2 C (1.0 F)
Wettest day (Rx1day)
The wettest day of the year at Calhoun (1), 1903 to 1943. The record is 154.4 mm (6.1 in) in 1918, marked on the chart; the median year is 65.0 mm (2.6 in).
Wettest day (Rx1day) at Calhoun (1) by year
Year
Wettest day (Rx1day)
1903
60.5 mm (2.4 in)
1904
49.5 mm (1.9 in)
1905
52.1 mm (2.1 in)
1906
52.8 mm (2.1 in)
1907
67.3 mm (2.6 in)
1908
53.1 mm (2.1 in)
1909
99.1 mm (3.9 in)
1910
122.4 mm (4.8 in)
1911
57.2 mm (2.3 in)
1912
70.4 mm (2.8 in)
1913
91.9 mm (3.6 in)
1914
49.0 mm (1.9 in)
1915
83.8 mm (3.3 in)
1916
66.0 mm (2.6 in)
1917
70.4 mm (2.8 in)
1918
154.4 mm (6.1 in)
1919
68.8 mm (2.7 in)
1920
77.5 mm (3.1 in)
1921
65.0 mm (2.6 in)
1922
45.5 mm (1.8 in)
1923
133.4 mm (5.3 in)
1924
53.8 mm (2.1 in)
1925
59.7 mm (2.4 in)
1926
55.4 mm (2.2 in)
1927
61.7 mm (2.4 in)
1928
59.9 mm (2.4 in)
1929
42.2 mm (1.7 in)
1930
48.0 mm (1.9 in)
1931
48.8 mm (1.9 in)
1932
62.7 mm (2.5 in)
1933
73.7 mm (2.9 in)
1934
51.6 mm (2.0 in)
1935
101.6 mm (4.0 in)
1936
64.0 mm (2.5 in)
1937
111.3 mm (4.4 in)
1938
69.9 mm (2.8 in)
1939
81.5 mm (3.2 in)
1940
55.1 mm (2.2 in)
1941
71.4 mm (2.8 in)
1942
81.3 mm (3.2 in)
1943
88.9 mm (3.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Calhoun (1), 1903 to 1943. The record is 318.5 mm (12.5 in) in 1937, marked on the chart; the median year is 107.0 mm (4.2 in).
Wettest five days (Rx5day) at Calhoun (1) by year
Year
Wettest five days (Rx5day)
1903
86.6 mm (3.4 in)
1904
96.3 mm (3.8 in)
1905
128.6 mm (5.1 in)
1906
156.0 mm (6.1 in)
1907
108.7 mm (4.3 in)
1908
67.5 mm (2.7 in)
1909
145.6 mm (5.7 in)
1910
255.8 mm (10.1 in)
1911
124.4 mm (4.9 in)
1912
103.9 mm (4.1 in)
1913
156.5 mm (6.2 in)
1914
77.8 mm (3.1 in)
1915
167.1 mm (6.6 in)
1916
104.1 mm (4.1 in)
1917
107.0 mm (4.2 in)
1918
181.3 mm (7.1 in)
1919
147.5 mm (5.8 in)
1920
93.5 mm (3.7 in)
1921
139.7 mm (5.5 in)
1922
90.4 mm (3.6 in)
1923
237.8 mm (9.4 in)
1924
105.3 mm (4.1 in)
1925
93.8 mm (3.7 in)
1926
82.8 mm (3.3 in)
1927
191.0 mm (7.5 in)
1928
79.5 mm (3.1 in)
1929
80.3 mm (3.2 in)
1930
128.1 mm (5.0 in)
1931
69.9 mm (2.8 in)
1932
140.3 mm (5.5 in)
1933
145.5 mm (5.7 in)
1934
98.6 mm (3.9 in)
1935
148.1 mm (5.8 in)
1936
100.3 mm (3.9 in)
1937
318.5 mm (12.5 in)
1938
87.7 mm (3.5 in)
1939
123.4 mm (4.9 in)
1940
74.7 mm (2.9 in)
1941
84.4 mm (3.3 in)
1942
92.7 mm (3.6 in)
1943
118.4 mm (4.7 in)
Longest dry spell (CDD)
The longest dry spell of the year at Calhoun (1), 1903 to 1943. The record is 37 days in 1925, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at Calhoun (1) by year
Year
Longest dry spell (CDD)
1903
24 days
1904
22 days
1905
16 days
1906
15 days
1907
17 days
1908
30 days
1909
16 days
1910
24 days
1911
18 days
1912
18 days
1913
20 days
1914
21 days
1915
20 days
1916
16 days
1917
21 days
1918
26 days
1919
18 days
1920
25 days
1921
18 days
1922
23 days
1923
15 days
1924
24 days
1925
37 days
1926
17 days
1927
20 days
1928
32 days
1929
13 days
1930
25 days
1931
19 days
1932
12 days
1933
17 days
1934
18 days
1935
17 days
1936
27 days
1937
15 days
1938
13 days
1939
36 days
1940
19 days
1941
22 days
1942
15 days
1943
27 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
30 years with a frost
Across 30 years with a frost, the median last spring frost at Calhoun (1) falls on 12 April and the median first autumn frost on 28 October, which leaves a median of 197 days between them.
Fitted over all years, the growing season changes by +4.2 days per decade at this station.
Frost dates and growing season at Calhoun (1)
Measure
Median, all years
Earliest period
Recent period (1904 to 1942)
Recent against earliest
Fitted trend
Last spring frost
12 April
n/a
12 April
n/a
-1.3 days per decade
First autumn frost
28 October
n/a
28 October
n/a
+2.9 days per decade
Growing days
197 days
n/a
197 days
n/a
+4.2 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.
Download the Data
Data for Calhoun (1) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Calhoun (1) 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.