Record envelope, standing records and threshold days for Macon (USC00235175), Missouri, United States, with 86 years of record.
Key Facts for Macon
Macon (USC00235175) is a weather station in Missouri, United States at 39.72 latitude and -92.47 longitude, 262 m (860 ft) above sea level.
The station reports from 1899 to 1984, 86 years of record.
1,464 records set at Macon still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Macon set a daily record precipitation of 63.5 mm (2.5 in) on 20 May 1984.
About the Station
Location: Missouri, United States, 39.72 latitude, -92.47 longitude.
Elevation: 262 m (860 ft).
Period of record: 1899 to 1984, 86 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 Macon. 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 Macon, 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)
-30.0 C (-22.0 F)
n/a
n/a
Feb
26.1 C (79.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-23.3 C (-9.9 F)
n/a
n/a
Apr
33.9 C (93.0 F)
-12.8 C (9.0 F)
n/a
n/a
May
40.6 C (105.1 F)
-2.2 C (28.0 F)
n/a
n/a
Jun
42.2 C (108.0 F)
3.9 C (39.0 F)
n/a
n/a
Jul
46.7 C (116.1 F)
8.3 C (46.9 F)
n/a
n/a
Aug
45.6 C (114.1 F)
5.0 C (41.0 F)
n/a
n/a
Sep
41.7 C (107.1 F)
-3.3 C (26.1 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-13.9 C (7.0 F)
n/a
n/a
Nov
30.6 C (87.1 F)
-21.7 C (-7.1 F)
n/a
n/a
Dec
21.1 C (70.0 F)
-29.4 C (-20.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Macon still stand. 1936 holds the most, with 73.
Standing records at Macon by the year they were set
Year set
Standing records
1899
18
1900
14
1901
34
1902
24
1903
11
1904
11
1905
11
1906
15
1907
18
1908
9
1909
19
1910
19
1911
36
1912
14
1913
32
1914
23
1915
21
1916
16
1917
20
1918
19
1919
10
1920
11
1921
16
1922
10
1923
16
1924
21
1925
27
1926
16
1927
24
1928
19
1929
16
1930
24
1931
21
1932
23
1933
23
1934
56
1935
18
1936
73
1937
17
1938
23
1939
22
1940
17
1941
16
1942
20
1943
17
1944
13
1945
11
1946
14
1947
13
1948
13
1949
12
1950
31
1951
20
1952
15
1953
13
1954
10
1955
15
1956
15
1957
8
1958
12
1959
13
1960
18
1961
6
1962
20
1963
16
1964
12
1965
16
1966
16
1967
14
1968
11
1969
3
1970
7
1971
12
1972
24
1973
3
1974
13
1975
7
1976
19
1977
11
1978
8
1979
11
1980
9
1981
11
1982
7
1983
19
1984
3
All-Time Record Progression
9 new records
9 all-time records were set at Macon between 18 January 1930 and 31 July 1958. Each dot is a new record.
When Macon set new all-time records
Date
Kind
Detail
1930-01-18
Record low maximum temperature
Record low maximum temperature -21.7 C (-7.1 F)
1930-08-04
Record high minimum temperature
Record high minimum temperature 27.2 C (81.0 F)
1934-07-19
Record high maximum temperature
Record high maximum temperature 44.4 C (111.9 F)
1934-07-20
Record high maximum temperature
Record high maximum temperature 45.0 C (113.0 F)
1934-07-21
Record high maximum temperature
Record high maximum temperature 46.1 C (115.0 F)
1934-07-21
Record high minimum temperature
Record high minimum temperature 28.9 C (84.0 F)
1936-07-16
Record high maximum temperature
Record high maximum temperature 46.7 C (116.1 F)
1940-01-19
Record low maximum temperature
Record low maximum temperature -22.2 C (-8.0 F)
1958-07-31
Record daily precipitation
Record daily precipitation 132.1 mm (5.2 in)
Wettest Day of Each Month
Jul: 132.1 mm (5.2 in)
The wettest day on record for each calendar month at Macon. The most was 132.1 mm (5.2 in) on 31 July 1958.
Record daily precipitation for each month at Macon
Month
Record daily precipitation (mm)
Date
Jan
77.7 mm (3.1 in)
19 January 1907
Feb
43.4 mm (1.7 in)
16 February 1954
Mar
71.9 mm (2.8 in)
15 March 1944
Apr
78.0 mm (3.1 in)
19 April 1970
May
66.0 mm (2.6 in)
16 May 1925
Jun
100.6 mm (4.0 in)
25 June 1981
Jul
132.1 mm (5.2 in)
31 July 1958
Aug
99.3 mm (3.9 in)
3 August 1968
Sep
116.8 mm (4.6 in)
21 September 1947
Oct
92.5 mm (3.6 in)
11 October 1969
Nov
114.3 mm (4.5 in)
17 November 1928
Dec
72.6 mm (2.9 in)
2 December 1982
Period of Record Coverage
1899 to 1984
Complete yearUnder 90 percent of days
86 years of record at Macon, 1899 to 1984. 7 years have data for under 90 percent of days and are left out of rankings: 1899, 1917, 1951, 1973, 1982, 1983, 1984.
Cooler than the station meanWarmer than the station mean
One stripe for each of 74 complete years at Macon, 1900 to 1981. Blue stripes are years cooler than the station's own mean of 11.6 C (52.8 F); red stripes are warmer. The coolest year was 1950, at 9.7 C (49.4 F), and the warmest was 1931, at 13.7 C (56.7 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Macon as warming stripes, 1900 to 1981
Year
Annual mean temperature
Difference from the station mean
1900
12.6 C
+0.98 C
1901
12.6 C
+0.99 C
1902
11.6 C
+0.02 C
1903
11.3 C
-0.26 C
1904
11.0 C
-0.54 C
1905
11.8 C
+0.17 C
1906
12.2 C
+0.65 C
1908
12.8 C
+1.26 C
1909
12.2 C
+0.60 C
1910
12.2 C
+0.63 C
1911
13.3 C
+1.76 C
1912
11.5 C
-0.09 C
1913
13.3 C
+1.68 C
1914
12.3 C
+0.70 C
1915
11.0 C
-0.56 C
1916
11.0 C
-0.54 C
1919
11.3 C
-0.31 C
1920
11.4 C
-0.14 C
1921
13.4 C
+1.84 C
1922
12.0 C
+0.42 C
1923
11.3 C
-0.28 C
1924
10.4 C
-1.18 C
1925
11.6 C
+0.03 C
1926
11.0 C
-0.56 C
1927
11.7 C
+0.15 C
1928
11.7 C
+0.10 C
1929
10.5 C
-1.13 C
1930
12.1 C
+0.53 C
1931
13.7 C
+2.13 C
1932
11.7 C
+0.12 C
1933
12.6 C
+1.05 C
1934
13.2 C
+1.62 C
1935
11.4 C
-0.22 C
1936
11.9 C
+0.30 C
1937
10.7 C
-0.85 C
1938
13.0 C
+1.44 C
1939
12.4 C
+0.78 C
1940
10.6 C
-0.94 C
1941
12.9 C
+1.36 C
1942
11.7 C
+0.15 C
1943
10.6 C
-0.97 C
1944
11.4 C
-0.21 C
1945
10.7 C
-0.91 C
1946
12.7 C
+1.12 C
1947
11.1 C
-0.51 C
1948
11.3 C
-0.25 C
1949
11.2 C
-0.37 C
1950
9.7 C
-1.91 C
1952
11.4 C
-0.21 C
1953
12.2 C
+0.57 C
1955
11.5 C
-0.12 C
1956
11.6 C
+0.02 C
1957
11.1 C
-0.50 C
1958
10.6 C
-0.97 C
1959
11.1 C
-0.46 C
1960
10.5 C
-1.05 C
1961
10.7 C
-0.84 C
1962
11.0 C
-0.54 C
1963
11.3 C
-0.26 C
1964
11.9 C
+0.27 C
1965
11.5 C
-0.05 C
1967
10.7 C
-0.88 C
1968
10.8 C
-0.74 C
1969
10.6 C
-1.03 C
1970
10.8 C
-0.81 C
1971
11.0 C
-0.55 C
1972
10.0 C
-1.55 C
1975
12.3 C
+0.75 C
1976
11.9 C
+0.35 C
1977
11.9 C
+0.36 C
1978
10.5 C
-1.08 C
1979
10.0 C
-1.62 C
1980
11.7 C
+0.12 C
1981
12.2 C
+0.60 C
The annual mean temperature here has fallen by 0.1 C (0.1 to 0.2) per decade over 1900 to 1981. In Fahrenheit: 0.3 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 74 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Macon
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.1 C (-0.2 to -0.1) per decade
-0.3 F (-0.4 to -0.1) per decade
1900 to 1981
74
Fall
Mean daily maximum
-0.2 C (-0.2 to -0.1) per decade
-0.3 F (-0.4 to -0.1) per decade
1900 to 1981
74
Fall
Mean daily minimum
-0.1 C (-0.2 to -0.1) per decade
-0.2 F (-0.4 to -0.1) per decade
1900 to 1981
74
Fall
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
1899 to 1984
Yearly extremes at Macon: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.7 C (116.1 F)
1936
37.5 C (99.5 F)
86
Coldest night (TNn)
-32.8 C (-27.0 F)
1905
-23.9 C (-11.0 F)
86
Wettest day (Rx1day)
132.1 mm (5.2 in)
1958
64.8 mm (2.6 in)
86
Wettest five days (Rx5day)
243.3 mm (9.6 in)
1969
101.7 mm (4.0 in)
86
Longest dry spell (CDD)
49 days
1956
23 days
86
Hottest day (TXx)
The hottest day of the year at Macon, 1899 to 1984. The record is 46.7 C (116.1 F) in 1936, marked on the chart; the median year is 37.5 C (99.5 F).
Hottest day (TXx) at Macon by year
Year
Hottest day (TXx)
1899
38.9 C (102.0 F)
1900
38.9 C (102.0 F)
1901
43.9 C (111.0 F)
1902
35.6 C (96.1 F)
1903
36.7 C (98.1 F)
1904
35.6 C (96.1 F)
1905
37.2 C (99.0 F)
1906
37.8 C (100.0 F)
1907
36.7 C (98.1 F)
1908
36.1 C (97.0 F)
1909
38.3 C (100.9 F)
1910
37.2 C (99.0 F)
1911
42.8 C (109.0 F)
1912
38.3 C (100.9 F)
1913
41.7 C (107.1 F)
1914
37.2 C (99.0 F)
1915
33.3 C (91.9 F)
1916
39.4 C (102.9 F)
1917
38.9 C (102.0 F)
1918
41.7 C (107.1 F)
1919
37.2 C (99.0 F)
1920
37.8 C (100.0 F)
1921
37.2 C (99.0 F)
1922
37.2 C (99.0 F)
1923
37.8 C (100.0 F)
1924
37.2 C (99.0 F)
1925
38.9 C (102.0 F)
1926
37.8 C (100.0 F)
1927
36.7 C (98.1 F)
1928
36.7 C (98.1 F)
1929
37.2 C (99.0 F)
1930
42.8 C (109.0 F)
1931
39.4 C (102.9 F)
1932
37.8 C (100.0 F)
1933
37.8 C (100.0 F)
1934
46.1 C (115.0 F)
1935
39.4 C (102.9 F)
1936
46.7 C (116.1 F)
1937
38.9 C (102.0 F)
1938
38.3 C (100.9 F)
1939
37.8 C (100.0 F)
1940
39.4 C (102.9 F)
1941
39.4 C (102.9 F)
1942
37.8 C (100.0 F)
1943
36.7 C (98.1 F)
1944
36.7 C (98.1 F)
1945
37.8 C (100.0 F)
1946
37.2 C (99.0 F)
1947
38.9 C (102.0 F)
1948
37.8 C (100.0 F)
1949
35.6 C (96.1 F)
1950
33.9 C (93.0 F)
1951
36.1 C (97.0 F)
1952
38.9 C (102.0 F)
1953
38.3 C (100.9 F)
1954
44.4 C (111.9 F)
1955
36.7 C (98.1 F)
1956
38.3 C (100.9 F)
1957
38.3 C (100.9 F)
1958
34.4 C (93.9 F)
1959
35.6 C (96.1 F)
1960
37.2 C (99.0 F)
1961
34.4 C (93.9 F)
1962
37.2 C (99.0 F)
1963
37.2 C (99.0 F)
1964
41.7 C (107.1 F)
1965
35.6 C (96.1 F)
1966
38.9 C (102.0 F)
1967
35.6 C (96.1 F)
1968
35.0 C (95.0 F)
1969
36.7 C (98.1 F)
1970
38.9 C (102.0 F)
1971
36.1 C (97.0 F)
1972
36.7 C (98.1 F)
1973
33.3 C (91.9 F)
1974
35.0 C (95.0 F)
1975
38.3 C (100.9 F)
1976
38.3 C (100.9 F)
1977
36.7 C (98.1 F)
1978
35.6 C (96.1 F)
1979
35.0 C (95.0 F)
1980
41.1 C (106.0 F)
1981
34.4 C (93.9 F)
1982
36.1 C (97.0 F)
1983
39.4 C (102.9 F)
1984
29.4 C (84.9 F)
Coldest night (TNn)
The coldest night of the year at Macon, 1899 to 1984. The record is -32.8 C (-27.0 F) in 1905, marked on the chart; the median year is -23.9 C (-11.0 F).
Coldest night (TNn) at Macon by year
Year
Coldest night (TNn)
1899
-19.4 C (-2.9 F)
1900
-21.7 C (-7.1 F)
1901
-29.4 C (-20.9 F)
1902
-25.0 C (-13.0 F)
1903
-27.2 C (-17.0 F)
1904
-26.7 C (-16.1 F)
1905
-32.8 C (-27.0 F)
1906
-19.4 C (-2.9 F)
1907
-21.7 C (-7.1 F)
1908
-18.9 C (-2.0 F)
1909
-23.3 C (-9.9 F)
1910
-22.2 C (-8.0 F)
1911
-23.3 C (-9.9 F)
1912
-30.0 C (-22.0 F)
1913
-19.4 C (-2.9 F)
1914
-25.6 C (-14.1 F)
1915
-27.8 C (-18.0 F)
1916
-26.1 C (-15.0 F)
1917
-26.7 C (-16.1 F)
1918
-23.9 C (-11.0 F)
1919
-24.4 C (-11.9 F)
1920
-20.0 C (-4.0 F)
1921
-15.6 C (3.9 F)
1922
-19.4 C (-2.9 F)
1923
-21.1 C (-6.0 F)
1924
-28.9 C (-20.0 F)
1925
-21.7 C (-7.1 F)
1926
-22.2 C (-8.0 F)
1927
-26.7 C (-16.1 F)
1928
-24.4 C (-11.9 F)
1929
-23.3 C (-9.9 F)
1930
-28.9 C (-20.0 F)
1931
-16.7 C (1.9 F)
1932
-26.7 C (-16.1 F)
1933
-30.0 C (-22.0 F)
1934
-23.3 C (-9.9 F)
1935
-21.7 C (-7.1 F)
1936
-28.3 C (-18.9 F)
1937
-18.9 C (-2.0 F)
1938
-19.4 C (-2.9 F)
1939
-19.4 C (-2.9 F)
1940
-28.3 C (-18.9 F)
1941
-16.1 C (3.0 F)
1942
-22.8 C (-9.0 F)
1943
-27.2 C (-17.0 F)
1944
-25.6 C (-14.1 F)
1945
-22.8 C (-9.0 F)
1946
-16.7 C (1.9 F)
1947
-25.0 C (-13.0 F)
1948
-24.4 C (-11.9 F)
1949
-24.4 C (-11.9 F)
1950
-22.8 C (-9.0 F)
1951
-25.0 C (-13.0 F)
1952
-19.4 C (-2.9 F)
1953
-23.3 C (-9.9 F)
1954
-21.1 C (-6.0 F)
1955
-22.2 C (-8.0 F)
1956
-18.9 C (-2.0 F)
1957
-21.7 C (-7.1 F)
1958
-23.9 C (-11.0 F)
1959
-25.0 C (-13.0 F)
1960
-23.3 C (-9.9 F)
1961
-23.3 C (-9.9 F)
1962
-25.6 C (-14.1 F)
1963
-25.0 C (-13.0 F)
1964
-21.7 C (-7.1 F)
1965
-25.0 C (-13.0 F)
1966
-26.1 C (-15.0 F)
1967
-19.4 C (-2.9 F)
1968
-26.7 C (-16.1 F)
1969
-24.4 C (-11.9 F)
1970
-26.7 C (-16.1 F)
1971
-22.2 C (-8.0 F)
1972
-26.7 C (-16.1 F)
1973
-22.8 C (-9.0 F)
1974
-25.6 C (-14.1 F)
1975
-24.4 C (-11.9 F)
1976
-26.1 C (-15.0 F)
1977
-26.7 C (-16.1 F)
1978
-23.9 C (-11.0 F)
1979
-28.9 C (-20.0 F)
1980
-23.3 C (-9.9 F)
1981
-26.1 C (-15.0 F)
1982
-30.0 C (-22.0 F)
1983
-28.3 C (-18.9 F)
1984
-23.3 C (-9.9 F)
Wettest day (Rx1day)
The wettest day of the year at Macon, 1899 to 1984. The record is 132.1 mm (5.2 in) in 1958, marked on the chart; the median year is 64.8 mm (2.6 in).
Wettest day (Rx1day) at Macon by year
Year
Wettest day (Rx1day)
1899
20.3 mm (0.8 in)
1900
64.0 mm (2.5 in)
1901
65.8 mm (2.6 in)
1902
51.6 mm (2.0 in)
1903
62.2 mm (2.4 in)
1904
52.8 mm (2.1 in)
1905
59.2 mm (2.3 in)
1906
53.3 mm (2.1 in)
1907
77.7 mm (3.1 in)
1908
42.2 mm (1.7 in)
1909
85.3 mm (3.4 in)
1910
125.2 mm (4.9 in)
1911
43.7 mm (1.7 in)
1912
35.8 mm (1.4 in)
1913
34.5 mm (1.4 in)
1914
39.6 mm (1.6 in)
1915
81.5 mm (3.2 in)
1916
66.8 mm (2.6 in)
1917
57.7 mm (2.3 in)
1918
44.5 mm (1.8 in)
1919
87.9 mm (3.5 in)
1920
59.4 mm (2.3 in)
1921
81.3 mm (3.2 in)
1922
50.8 mm (2.0 in)
1923
48.3 mm (1.9 in)
1924
61.7 mm (2.4 in)
1925
68.6 mm (2.7 in)
1926
74.7 mm (2.9 in)
1927
74.9 mm (2.9 in)
1928
114.3 mm (4.5 in)
1929
71.1 mm (2.8 in)
1930
69.9 mm (2.8 in)
1931
64.8 mm (2.6 in)
1932
64.0 mm (2.5 in)
1933
57.2 mm (2.3 in)
1934
55.9 mm (2.2 in)
1935
43.7 mm (1.7 in)
1936
61.2 mm (2.4 in)
1937
74.9 mm (2.9 in)
1938
64.8 mm (2.6 in)
1939
99.1 mm (3.9 in)
1940
63.2 mm (2.5 in)
1941
50.8 mm (2.0 in)
1942
86.4 mm (3.4 in)
1943
46.7 mm (1.8 in)
1944
71.9 mm (2.8 in)
1945
53.1 mm (2.1 in)
1946
85.9 mm (3.4 in)
1947
116.8 mm (4.6 in)
1948
51.1 mm (2.0 in)
1949
113.0 mm (4.4 in)
1950
44.2 mm (1.7 in)
1951
85.9 mm (3.4 in)
1952
61.7 mm (2.4 in)
1953
39.4 mm (1.6 in)
1954
75.7 mm (3.0 in)
1955
81.5 mm (3.2 in)
1956
88.9 mm (3.5 in)
1957
78.2 mm (3.1 in)
1958
132.1 mm (5.2 in)
1959
50.8 mm (2.0 in)
1960
79.5 mm (3.1 in)
1961
110.7 mm (4.4 in)
1962
49.0 mm (1.9 in)
1963
63.0 mm (2.5 in)
1964
72.1 mm (2.8 in)
1965
99.1 mm (3.9 in)
1966
100.3 mm (3.9 in)
1967
62.0 mm (2.4 in)
1968
99.3 mm (3.9 in)
1969
92.5 mm (3.6 in)
1970
78.0 mm (3.1 in)
1971
62.5 mm (2.5 in)
1972
70.1 mm (2.8 in)
1973
50.8 mm (2.0 in)
1974
95.3 mm (3.8 in)
1975
71.4 mm (2.8 in)
1976
74.4 mm (2.9 in)
1977
83.3 mm (3.3 in)
1978
53.3 mm (2.1 in)
1979
58.2 mm (2.3 in)
1980
51.8 mm (2.0 in)
1981
100.6 mm (4.0 in)
1982
72.6 mm (2.9 in)
1983
44.7 mm (1.8 in)
1984
63.5 mm (2.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Macon, 1899 to 1984. The record is 243.3 mm (9.6 in) in 1969, marked on the chart; the median year is 101.7 mm (4.0 in).
Wettest five days (Rx5day) at Macon by year
Year
Wettest five days (Rx5day)
1899
32.5 mm (1.3 in)
1900
80.3 mm (3.2 in)
1901
83.3 mm (3.3 in)
1902
80.3 mm (3.2 in)
1903
103.7 mm (4.1 in)
1904
106.8 mm (4.2 in)
1905
147.6 mm (5.8 in)
1906
87.3 mm (3.4 in)
1907
122.7 mm (4.8 in)
1908
76.2 mm (3.0 in)
1909
152.4 mm (6.0 in)
1910
128.5 mm (5.1 in)
1911
107.7 mm (4.2 in)
1912
56.9 mm (2.2 in)
1913
63.7 mm (2.5 in)
1914
136.2 mm (5.4 in)
1915
144.6 mm (5.7 in)
1916
155.7 mm (6.1 in)
1917
116.9 mm (4.6 in)
1918
74.2 mm (2.9 in)
1919
90.2 mm (3.6 in)
1920
123.2 mm (4.9 in)
1921
121.4 mm (4.8 in)
1922
90.9 mm (3.6 in)
1923
105.4 mm (4.1 in)
1924
63.0 mm (2.5 in)
1925
83.8 mm (3.3 in)
1926
142.9 mm (5.6 in)
1927
103.8 mm (4.1 in)
1928
149.1 mm (5.9 in)
1929
134.0 mm (5.3 in)
1930
114.4 mm (4.5 in)
1931
99.6 mm (3.9 in)
1932
87.5 mm (3.4 in)
1933
75.4 mm (3.0 in)
1934
75.8 mm (3.0 in)
1935
72.1 mm (2.8 in)
1936
110.7 mm (4.4 in)
1937
83.3 mm (3.3 in)
1938
133.1 mm (5.2 in)
1939
125.8 mm (5.0 in)
1940
65.5 mm (2.6 in)
1941
95.0 mm (3.7 in)
1942
96.8 mm (3.8 in)
1943
84.9 mm (3.3 in)
1944
88.3 mm (3.5 in)
1945
113.3 mm (4.5 in)
1946
98.8 mm (3.9 in)
1947
118.8 mm (4.7 in)
1948
73.5 mm (2.9 in)
1949
156.4 mm (6.2 in)
1950
74.7 mm (2.9 in)
1951
63.5 mm (2.5 in)
1952
77.0 mm (3.0 in)
1953
52.7 mm (2.1 in)
1954
89.8 mm (3.5 in)
1955
119.3 mm (4.7 in)
1956
113.5 mm (4.5 in)
1957
111.0 mm (4.4 in)
1958
170.5 mm (6.7 in)
1959
79.6 mm (3.1 in)
1960
155.4 mm (6.1 in)
1961
176.8 mm (7.0 in)
1962
62.5 mm (2.5 in)
1963
110.2 mm (4.3 in)
1964
84.6 mm (3.3 in)
1965
124.5 mm (4.9 in)
1966
130.3 mm (5.1 in)
1967
115.3 mm (4.5 in)
1968
137.4 mm (5.4 in)
1969
243.3 mm (9.6 in)
1970
97.2 mm (3.8 in)
1971
104.9 mm (4.1 in)
1972
110.9 mm (4.4 in)
1973
81.8 mm (3.2 in)
1974
95.3 mm (3.8 in)
1975
91.0 mm (3.6 in)
1976
90.9 mm (3.6 in)
1977
135.8 mm (5.3 in)
1978
85.9 mm (3.4 in)
1979
86.4 mm (3.4 in)
1980
87.6 mm (3.4 in)
1981
164.6 mm (6.5 in)
1982
106.4 mm (4.2 in)
1983
109.4 mm (4.3 in)
1984
74.5 mm (2.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Macon, 1899 to 1984. The record is 49 days in 1956, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Macon by year
Year
Longest dry spell (CDD)
1899
18 days
1900
18 days
1901
30 days
1902
19 days
1903
21 days
1904
39 days
1905
22 days
1906
24 days
1907
18 days
1908
25 days
1909
37 days
1910
31 days
1911
14 days
1912
28 days
1913
23 days
1914
30 days
1915
22 days
1916
22 days
1917
28 days
1918
36 days
1919
42 days
1920
28 days
1921
14 days
1922
19 days
1923
23 days
1924
20 days
1925
16 days
1926
14 days
1927
18 days
1928
25 days
1929
17 days
1930
30 days
1931
18 days
1932
17 days
1933
26 days
1934
35 days
1935
20 days
1936
22 days
1937
19 days
1938
24 days
1939
36 days
1940
24 days
1941
18 days
1942
31 days
1943
26 days
1944
28 days
1945
19 days
1946
22 days
1947
29 days
1948
28 days
1949
27 days
1950
31 days
1951
10 days
1952
33 days
1953
22 days
1954
23 days
1955
29 days
1956
49 days
1957
20 days
1958
32 days
1959
26 days
1960
17 days
1961
15 days
1962
17 days
1963
31 days
1964
45 days
1965
23 days
1966
27 days
1967
26 days
1968
26 days
1969
19 days
1970
22 days
1971
26 days
1972
17 days
1973
14 days
1974
15 days
1975
16 days
1976
35 days
1977
12 days
1978
20 days
1979
36 days
1980
24 days
1981
31 days
1982
15 days
1983
20 days
1984
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
74 years with a frost
Across 74 years with a frost, the median last spring frost at Macon falls on 19 April and the median first autumn frost on 18 October, which leaves a median of 183 days between them.
In 1947 to 1981 the median growing season was 188 days. That is 10 days more than in 1900 to 1932.
Fitted over all years, the growing season changes by +0.7 days per decade at this station.
Frost dates and growing season at Macon
Measure
Median, all years
Earliest period (1900 to 1932)
Recent period (1947 to 1981)
Recent against earliest
Fitted trend
Last spring frost
19 April
22 April
17 April
5 days earlier
-0.8 days per decade
First autumn frost
18 October
18 October
19 October
1 day later
-0.2 days per decade
Growing days
183 days
178 days
188 days
10 days more
+0.7 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
79 years, 1900 to 1983
A day with at least 67.2 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 135.8 mm (5.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Macon: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
67.2 mm (2.6 in)
5 years
86.8 mm (3.4 in)
10 years
99.2 mm (3.9 in)
25 years
114.4 mm (4.5 in)
50 years
125.3 mm (4.9 in)
100 years
135.8 mm (5.3 in)
Longer than the 79 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, 79 years of values from 1900 to 1983.
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: 132.1 mm (5.2 in) in 1958; 125.2 mm (4.9 in) in 1910; 116.8 mm (4.6 in) in 1947.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Macon, at 1967 and 1975. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1967 ran 0.4 C (0.7 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1975 ran 0.7 C (1.2 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Macon, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1967
-0.4
-0.7
likely
5
1975
+0.7
+1.2
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 Macon standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Macon 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.