Record envelope, standing records and threshold days for Florence (USC00012971), Alabama, United States, with 85 years of record.
Key Facts for Florence
Florence (USC00012971) is a weather station in Alabama, United States at 34.80 latitude and -87.68 longitude, 177 m (581 ft) above sea level.
The station reports from 1893 to 1977, 85 years of record.
1,464 records set at Florence still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Florence set a daily record high maximum temperature of 32.2 C (90.0 F) on 16 April 1977.
About the Station
Location: Alabama, United States, 34.80 latitude, -87.68 longitude.
Elevation: 177 m (581 ft).
Period of record: 1893 to 1977, 85 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 Florence. 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 Florence, 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)
-22.8 C (-9.0 F)
n/a
n/a
Feb
28.9 C (84.0 F)
-25.0 C (-13.0 F)
n/a
n/a
Mar
33.3 C (91.9 F)
-13.9 C (7.0 F)
n/a
n/a
Apr
36.1 C (97.0 F)
-5.6 C (21.9 F)
n/a
n/a
May
36.7 C (98.1 F)
0.0 C (32.0 F)
n/a
n/a
Jun
42.2 C (108.0 F)
3.9 C (39.0 F)
n/a
n/a
Jul
42.2 C (108.0 F)
8.9 C (48.0 F)
n/a
n/a
Aug
42.2 C (108.0 F)
8.3 C (46.9 F)
n/a
n/a
Sep
42.2 C (108.0 F)
1.7 C (35.1 F)
n/a
n/a
Oct
36.1 C (97.0 F)
-5.0 C (23.0 F)
n/a
n/a
Nov
31.7 C (89.1 F)
-15.0 C (5.0 F)
n/a
n/a
Dec
25.6 C (78.1 F)
-17.8 C (0.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Florence still stand. 1917 holds the most, with 49.
Standing records at Florence by the year they were set
Year set
Standing records
1893
26
1894
30
1895
17
1896
23
1897
26
1898
27
1899
36
1900
14
1901
18
1902
33
1903
28
1904
14
1905
16
1906
14
1907
34
1908
13
1909
21
1910
23
1911
47
1912
15
1913
20
1914
30
1915
17
1916
29
1917
49
1918
23
1919
19
1920
17
1921
16
1922
18
1923
15
1924
28
1925
40
1926
19
1927
31
1928
26
1929
28
1930
26
1931
21
1932
23
1933
18
1934
17
1935
10
1936
17
1937
32
1938
12
1939
12
1940
27
1954
20
1955
20
1956
5
1957
7
1958
17
1959
6
1960
11
1961
5
1962
23
1963
23
1964
16
1965
9
1966
10
1967
23
1968
13
1969
7
1970
25
1971
16
1972
12
1973
13
1974
23
1975
21
1976
13
1977
11
All-Time Record Progression
1 new records
1 all-time records were set at Florence between 1 January 1964 and 1 January 1964. Each dot is a new record.
When Florence set new all-time records
Date
Kind
Detail
1964-01-01
Record daily snowfall
Record daily snowfall 48.8 cm (19.2 in)
Wettest Day of Each Month
Jul: 143.3 mm (5.6 in)
The wettest day on record for each calendar month at Florence. The most was 143.3 mm (5.6 in) on 8 July 1916.
Record daily precipitation for each month at Florence
Month
Record daily precipitation (mm)
Date
Jan
93.2 mm (3.7 in)
10 January 1975
Feb
99.3 mm (3.9 in)
21 February 1971
Mar
132.1 mm (5.2 in)
12 March 1920
Apr
138.4 mm (5.4 in)
12 April 1893
May
91.7 mm (3.6 in)
14 May 1903
Jun
97.5 mm (3.8 in)
7 June 1965
Jul
143.3 mm (5.6 in)
8 July 1916
Aug
109.0 mm (4.3 in)
1 August 1938
Sep
89.9 mm (3.5 in)
3 September 1932
Oct
105.7 mm (4.2 in)
20 October 1918
Nov
71.1 mm (2.8 in)
4 November 1936
Dec
126.7 mm (5.0 in)
29 December 1954
Period of Record Coverage
1893 to 1977
Complete yearUnder 90 percent of days
72 years of record at Florence, 1893 to 1977. 11 years have data for under 90 percent of days and are left out of rankings: 1901, 1913, 1914, 1915, 1918, 1928, 1954, 1955 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 54 complete years at Florence, 1893 to 1976. Blue stripes are years cooler than the station's own mean of 16.1 C (61.0 F); red stripes are warmer. The coolest year was 1912, at 14.8 C (58.6 F), and the warmest was 1933, at 17.4 C (63.4 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Florence as warming stripes, 1893 to 1976
Year
Annual mean temperature
Difference from the station mean
1893
15.4 C
-0.70 C
1894
15.8 C
-0.35 C
1895
15.2 C
-0.90 C
1896
16.7 C
+0.60 C
1897
16.9 C
+0.84 C
1898
16.6 C
+0.47 C
1899
16.4 C
+0.29 C
1900
16.4 C
+0.33 C
1902
16.5 C
+0.44 C
1903
15.8 C
-0.32 C
1904
16.1 C
+0.01 C
1905
15.8 C
-0.28 C
1906
16.4 C
+0.32 C
1907
16.6 C
+0.47 C
1908
17.0 C
+0.87 C
1909
16.7 C
+0.63 C
1910
16.6 C
+0.50 C
1912
14.8 C
-1.31 C
1916
15.6 C
-0.51 C
1919
15.7 C
-0.40 C
1920
15.2 C
-0.90 C
1921
17.3 C
+1.19 C
1923
15.7 C
-0.45 C
1924
15.1 C
-1.05 C
1925
16.9 C
+0.76 C
1926
15.6 C
-0.50 C
1927
17.1 C
+1.01 C
1929
15.9 C
-0.22 C
1930
16.3 C
+0.19 C
1931
16.5 C
+0.42 C
1932
16.5 C
+0.41 C
1933
17.4 C
+1.33 C
1934
16.8 C
+0.71 C
1935
16.5 C
+0.35 C
1936
16.6 C
+0.45 C
1937
16.4 C
+0.25 C
1938
17.2 C
+1.06 C
1939
16.5 C
+0.38 C
1956
16.3 C
+0.19 C
1959
16.2 C
+0.09 C
1960
15.0 C
-1.08 C
1963
16.4 C
+0.29 C
1964
16.5 C
+0.44 C
1965
16.4 C
+0.33 C
1966
16.1 C
0.00 C
1967
16.3 C
+0.20 C
1968
15.3 C
-0.84 C
1969
14.9 C
-1.18 C
1970
15.2 C
-0.90 C
1971
15.3 C
-0.85 C
1972
15.1 C
-1.01 C
1973
15.5 C
-0.64 C
1974
15.1 C
-1.03 C
1976
15.8 C
-0.32 C
The annual mean temperature here has fallen by 0.07 C (0.00 to 0.14) per decade over 1893 to 1976. In Fahrenheit: 0.13 F (0.00 to 0.25) per decade. The slope is a straight line fitted to 54 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Florence
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.07 C (-0.14 to 0.00) per decade
-0.13 F (-0.25 to 0.00) per decade
1893 to 1976
54
Fall
Mean daily maximum
0.09 C (0.02 to 0.16) per decade
0.16 F (0.03 to 0.28) per decade
1893 to 1976
54
Rise
Mean daily minimum
-0.2 C (-0.3 to -0.1) per decade
-0.4 F (-0.6 to -0.2) per decade
1893 to 1976
54
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
1893 to 1977
Yearly extremes at Florence: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.2 C (108.0 F)
1914
37.8 C (100.0 F)
72
Coldest night (TNn)
-25.0 C (-13.0 F)
1905
-13.9 C (7.0 F)
72
Wettest day (Rx1day)
143.3 mm (5.6 in)
1916
78.9 mm (3.1 in)
72
Wettest five days (Rx5day)
255.0 mm (10.0 in)
1916
121.4 mm (4.8 in)
72
Longest dry spell (CDD)
40 days
1897
19 days
72
Hottest day (TXx)
The hottest day of the year at Florence, 1893 to 1977. The record is 42.2 C (108.0 F) in 1914, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Florence by year
Year
Hottest day (TXx)
1893
37.2 C (99.0 F)
1894
37.2 C (99.0 F)
1895
34.4 C (93.9 F)
1896
37.8 C (100.0 F)
1897
39.4 C (102.9 F)
1898
37.2 C (99.0 F)
1899
37.8 C (100.0 F)
1900
35.6 C (96.1 F)
1901
37.8 C (100.0 F)
1902
40.0 C (104.0 F)
1903
37.2 C (99.0 F)
1904
36.7 C (98.1 F)
1905
35.6 C (96.1 F)
1906
37.8 C (100.0 F)
1907
37.8 C (100.0 F)
1908
36.7 C (98.1 F)
1909
40.0 C (104.0 F)
1910
34.4 C (93.9 F)
1911
37.2 C (99.0 F)
1912
36.7 C (98.1 F)
1913
39.4 C (102.9 F)
1914
42.2 C (108.0 F)
1915
37.8 C (100.0 F)
1916
37.8 C (100.0 F)
1917
36.7 C (98.1 F)
1918
38.9 C (102.0 F)
1919
36.7 C (98.1 F)
1920
36.7 C (98.1 F)
1921
38.9 C (102.0 F)
1922
37.8 C (100.0 F)
1923
37.2 C (99.0 F)
1924
40.0 C (104.0 F)
1925
42.2 C (108.0 F)
1926
37.8 C (100.0 F)
1927
37.8 C (100.0 F)
1928
37.2 C (99.0 F)
1929
36.7 C (98.1 F)
1930
42.2 C (108.0 F)
1931
41.1 C (106.0 F)
1932
37.8 C (100.0 F)
1933
38.9 C (102.0 F)
1934
40.0 C (104.0 F)
1935
41.1 C (106.0 F)
1936
40.0 C (104.0 F)
1937
39.4 C (102.9 F)
1938
40.0 C (104.0 F)
1939
37.8 C (100.0 F)
1940
38.9 C (102.0 F)
1954
41.1 C (106.0 F)
1955
37.8 C (100.0 F)
1956
36.7 C (98.1 F)
1957
36.7 C (98.1 F)
1958
36.1 C (97.0 F)
1959
37.2 C (99.0 F)
1960
37.8 C (100.0 F)
1961
30.6 C (87.1 F)
1962
38.9 C (102.0 F)
1963
36.7 C (98.1 F)
1964
38.9 C (102.0 F)
1965
36.7 C (98.1 F)
1966
37.8 C (100.0 F)
1967
35.0 C (95.0 F)
1968
38.3 C (100.9 F)
1969
37.8 C (100.0 F)
1970
37.2 C (99.0 F)
1971
36.7 C (98.1 F)
1972
35.6 C (96.1 F)
1973
35.6 C (96.1 F)
1974
35.0 C (95.0 F)
1975
35.0 C (95.0 F)
1976
36.1 C (97.0 F)
1977
32.2 C (90.0 F)
Coldest night (TNn)
The coldest night of the year at Florence, 1893 to 1977. The record is -25.0 C (-13.0 F) in 1905, marked on the chart; the median year is -13.9 C (7.0 F).
Coldest night (TNn) at Florence by year
Year
Coldest night (TNn)
1893
-21.1 C (-6.0 F)
1894
-16.1 C (3.0 F)
1895
-18.3 C (-0.9 F)
1896
-10.6 C (12.9 F)
1897
-15.0 C (5.0 F)
1898
-11.1 C (12.0 F)
1899
-23.9 C (-11.0 F)
1900
-13.9 C (7.0 F)
1901
-17.8 C (0.0 F)
1902
-12.2 C (10.0 F)
1903
-16.1 C (3.0 F)
1904
-11.1 C (12.0 F)
1905
-25.0 C (-13.0 F)
1906
-10.0 C (14.0 F)
1907
-8.9 C (16.0 F)
1908
-9.4 C (15.1 F)
1909
-12.8 C (9.0 F)
1910
-18.9 C (-2.0 F)
1911
-14.4 C (6.1 F)
1912
-16.1 C (3.0 F)
1913
-9.4 C (15.1 F)
1914
-17.8 C (0.0 F)
1915
-8.3 C (17.1 F)
1916
-12.2 C (10.0 F)
1917
-14.4 C (6.1 F)
1918
-22.2 C (-8.0 F)
1919
-17.8 C (0.0 F)
1920
-11.7 C (10.9 F)
1921
-8.9 C (16.0 F)
1922
-7.8 C (18.0 F)
1923
-10.6 C (12.9 F)
1924
-17.8 C (0.0 F)
1925
-15.0 C (5.0 F)
1926
-10.6 C (12.9 F)
1927
-15.0 C (5.0 F)
1928
-16.7 C (1.9 F)
1929
-12.8 C (9.0 F)
1930
-15.0 C (5.0 F)
1931
-11.1 C (12.0 F)
1932
-11.1 C (12.0 F)
1933
-17.2 C (1.0 F)
1934
-14.4 C (6.1 F)
1935
-13.3 C (8.1 F)
1936
-17.8 C (0.0 F)
1937
-15.0 C (5.0 F)
1938
-11.1 C (12.0 F)
1939
-9.4 C (15.1 F)
1940
-22.8 C (-9.0 F)
1954
-7.2 C (19.0 F)
1955
-11.7 C (10.9 F)
1956
-8.9 C (16.0 F)
1957
-12.8 C (9.0 F)
1958
-20.0 C (-4.0 F)
1959
-15.6 C (3.9 F)
1960
-13.3 C (8.1 F)
1961
2.8 C (37.0 F)
1962
-17.8 C (0.0 F)
1963
-20.0 C (-4.0 F)
1964
-10.6 C (12.9 F)
1965
-15.0 C (5.0 F)
1966
-22.2 C (-8.0 F)
1967
-13.3 C (8.1 F)
1968
-12.8 C (9.0 F)
1969
-13.9 C (7.0 F)
1970
-18.9 C (-2.0 F)
1971
-17.2 C (1.0 F)
1972
-19.4 C (-2.9 F)
1973
-13.3 C (8.1 F)
1974
-12.2 C (10.0 F)
1975
-13.9 C (7.0 F)
1976
-13.3 C (8.1 F)
1977
-18.3 C (-0.9 F)
Wettest day (Rx1day)
The wettest day of the year at Florence, 1893 to 1977. The record is 143.3 mm (5.6 in) in 1916, marked on the chart; the median year is 78.9 mm (3.1 in).
Wettest day (Rx1day) at Florence by year
Year
Wettest day (Rx1day)
1893
138.4 mm (5.4 in)
1894
89.2 mm (3.5 in)
1895
70.4 mm (2.8 in)
1896
84.1 mm (3.3 in)
1897
130.8 mm (5.1 in)
1898
55.1 mm (2.2 in)
1899
89.4 mm (3.5 in)
1900
79.5 mm (3.1 in)
1901
65.0 mm (2.6 in)
1902
67.3 mm (2.6 in)
1903
91.7 mm (3.6 in)
1904
82.6 mm (3.3 in)
1905
67.3 mm (2.6 in)
1906
60.2 mm (2.4 in)
1907
61.2 mm (2.4 in)
1908
63.2 mm (2.5 in)
1909
50.8 mm (2.0 in)
1910
55.4 mm (2.2 in)
1911
80.5 mm (3.2 in)
1912
61.7 mm (2.4 in)
1913
83.8 mm (3.3 in)
1914
88.9 mm (3.5 in)
1915
69.1 mm (2.7 in)
1916
143.3 mm (5.6 in)
1917
68.1 mm (2.7 in)
1918
105.7 mm (4.2 in)
1919
102.1 mm (4.0 in)
1920
132.1 mm (5.2 in)
1921
91.9 mm (3.6 in)
1922
75.2 mm (3.0 in)
1923
50.3 mm (2.0 in)
1924
65.0 mm (2.6 in)
1925
68.1 mm (2.7 in)
1926
99.1 mm (3.9 in)
1927
82.3 mm (3.2 in)
1928
69.6 mm (2.7 in)
1929
122.9 mm (4.8 in)
1930
79.2 mm (3.1 in)
1931
63.0 mm (2.5 in)
1932
96.5 mm (3.8 in)
1933
53.1 mm (2.1 in)
1934
61.7 mm (2.4 in)
1935
53.3 mm (2.1 in)
1936
86.4 mm (3.4 in)
1937
78.5 mm (3.1 in)
1938
109.0 mm (4.3 in)
1939
89.2 mm (3.5 in)
1940
69.3 mm (2.7 in)
1954
126.7 mm (5.0 in)
1955
55.4 mm (2.2 in)
1956
80.0 mm (3.1 in)
1957
51.8 mm (2.0 in)
1958
45.7 mm (1.8 in)
1959
51.3 mm (2.0 in)
1960
51.1 mm (2.0 in)
1961
55.9 mm (2.2 in)
1962
62.7 mm (2.5 in)
1963
107.4 mm (4.2 in)
1964
106.9 mm (4.2 in)
1965
97.5 mm (3.8 in)
1966
110.2 mm (4.3 in)
1967
87.6 mm (3.4 in)
1968
62.2 mm (2.4 in)
1969
113.0 mm (4.4 in)
1970
52.1 mm (2.1 in)
1971
99.3 mm (3.9 in)
1972
58.7 mm (2.3 in)
1973
127.3 mm (5.0 in)
1974
59.4 mm (2.3 in)
1975
125.7 mm (4.9 in)
1976
68.6 mm (2.7 in)
1977
99.6 mm (3.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Florence, 1893 to 1977. The record is 255.0 mm (10.0 in) in 1916, marked on the chart; the median year is 121.4 mm (4.8 in).
Wettest five days (Rx5day) at Florence by year
Year
Wettest five days (Rx5day)
1893
191.5 mm (7.5 in)
1894
134.6 mm (5.3 in)
1895
90.2 mm (3.6 in)
1896
132.4 mm (5.2 in)
1897
223.5 mm (8.8 in)
1898
85.6 mm (3.4 in)
1899
147.1 mm (5.8 in)
1900
164.9 mm (6.5 in)
1901
152.4 mm (6.0 in)
1902
96.0 mm (3.8 in)
1903
121.9 mm (4.8 in)
1904
100.4 mm (4.0 in)
1905
86.3 mm (3.4 in)
1906
109.4 mm (4.3 in)
1907
106.2 mm (4.2 in)
1908
69.3 mm (2.7 in)
1909
98.9 mm (3.9 in)
1910
80.5 mm (3.2 in)
1911
165.8 mm (6.5 in)
1912
107.6 mm (4.2 in)
1913
105.4 mm (4.1 in)
1914
132.1 mm (5.2 in)
1915
108.2 mm (4.3 in)
1916
255.0 mm (10.0 in)
1917
115.1 mm (4.5 in)
1918
167.2 mm (6.6 in)
1919
165.1 mm (6.5 in)
1920
153.4 mm (6.0 in)
1921
134.3 mm (5.3 in)
1922
115.8 mm (4.6 in)
1923
101.9 mm (4.0 in)
1924
102.6 mm (4.0 in)
1925
87.7 mm (3.5 in)
1926
249.3 mm (9.8 in)
1927
138.2 mm (5.4 in)
1928
100.9 mm (4.0 in)
1929
152.4 mm (6.0 in)
1930
97.0 mm (3.8 in)
1931
96.6 mm (3.8 in)
1932
136.8 mm (5.4 in)
1933
75.4 mm (3.0 in)
1934
99.3 mm (3.9 in)
1935
96.3 mm (3.8 in)
1936
124.8 mm (4.9 in)
1937
119.6 mm (4.7 in)
1938
122.7 mm (4.8 in)
1939
162.2 mm (6.4 in)
1940
101.8 mm (4.0 in)
1954
139.7 mm (5.5 in)
1955
85.9 mm (3.4 in)
1956
139.2 mm (5.5 in)
1957
182.9 mm (7.2 in)
1958
93.1 mm (3.7 in)
1959
77.3 mm (3.0 in)
1960
79.5 mm (3.1 in)
1961
55.9 mm (2.2 in)
1962
103.0 mm (4.1 in)
1963
129.7 mm (5.1 in)
1964
141.7 mm (5.6 in)
1965
135.4 mm (5.3 in)
1966
122.8 mm (4.8 in)
1967
127.0 mm (5.0 in)
1968
107.9 mm (4.2 in)
1969
152.9 mm (6.0 in)
1970
152.5 mm (6.0 in)
1971
146.4 mm (5.8 in)
1972
114.6 mm (4.5 in)
1973
181.6 mm (7.1 in)
1974
151.6 mm (6.0 in)
1975
179.1 mm (7.1 in)
1976
98.7 mm (3.9 in)
1977
120.8 mm (4.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Florence, 1893 to 1977. The record is 40 days in 1897, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at Florence by year
Year
Longest dry spell (CDD)
1893
13 days
1894
13 days
1895
19 days
1896
22 days
1897
40 days
1898
17 days
1899
16 days
1900
25 days
1901
21 days
1902
22 days
1903
23 days
1904
28 days
1905
19 days
1906
23 days
1907
18 days
1908
32 days
1909
18 days
1910
20 days
1911
27 days
1912
19 days
1913
20 days
1914
24 days
1915
20 days
1916
25 days
1917
14 days
1918
20 days
1919
21 days
1920
31 days
1921
22 days
1922
18 days
1923
33 days
1924
32 days
1925
25 days
1926
16 days
1927
19 days
1928
15 days
1929
23 days
1930
34 days
1931
21 days
1932
15 days
1933
15 days
1934
16 days
1935
19 days
1936
15 days
1937
18 days
1938
19 days
1939
28 days
1940
22 days
1954
22 days
1955
19 days
1956
18 days
1957
24 days
1958
26 days
1959
20 days
1960
17 days
1961
12 days
1962
28 days
1963
34 days
1964
20 days
1965
18 days
1966
14 days
1967
25 days
1968
19 days
1969
16 days
1970
17 days
1971
16 days
1972
12 days
1973
15 days
1974
17 days
1975
13 days
1976
16 days
1977
16 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
54 years with a frost
Across 54 years with a frost, the median last spring frost at Florence falls on 6 April and the median first autumn frost on 29 October, which leaves a median of 206 days between them.
Fitted over all years, the growing season changes by -1.2 days per decade at this station.
Frost dates and growing season at Florence
Measure
Median, all years
Earliest period
Recent period (1925 to 1976)
Recent against earliest
Fitted trend
Last spring frost
6 April
n/a
6 April
n/a
+0.6 days per decade
First autumn frost
29 October
n/a
27 October
n/a
-0.5 days per decade
Growing days
206 days
n/a
209 days
n/a
-1.2 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.
Rainfall Return Levels
59 years, 1895 to 1976
A day with at least 77.2 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 161.0 mm (6.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Florence: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
77.2 mm (3.0 in)
5 years
100.1 mm (3.9 in)
10 years
115.1 mm (4.5 in)
25 years
133.8 mm (5.3 in)
50 years
147.5 mm (5.8 in)
100 years
161.0 mm (6.3 in)
Longer than the 59 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, 59 years of values from 1895 to 1976.
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: 143.3 mm (5.6 in) in 1916; 132.1 mm (5.2 in) in 1920; 130.8 mm (5.1 in) in 1897.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Florence standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Florence 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.