Record envelope, standing records and threshold days for Cairo 3 S (USC00461328), West Virginia, United States, with 83 years of record.
Key Facts for Cairo 3 S
Cairo 3 S (USC00461328) is a weather station in West Virginia, United States at 39.17 latitude and -81.17 longitude, 207 m (679 ft) above sea level.
The station reports from 1899 to 1981, 83 years of record.
1,464 records set at Cairo 3 S still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Cairo 3 S set a daily record low maximum temperature of 12.8 C (55.0 F) on 8 October 1981.
About the Station
Location: West Virginia, United States, 39.17 latitude, -81.17 longitude.
Elevation: 207 m (679 ft).
Period of record: 1899 to 1981, 83 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 Cairo 3 S. 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 Cairo 3 S, 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)
-34.4 C (-29.9 F)
n/a
n/a
Feb
26.1 C (79.0 F)
-31.1 C (-24.0 F)
n/a
n/a
Mar
31.7 C (89.1 F)
-25.0 C (-13.0 F)
n/a
n/a
Apr
35.0 C (95.0 F)
-13.9 C (7.0 F)
n/a
n/a
May
36.7 C (98.1 F)
-5.0 C (23.0 F)
n/a
n/a
Jun
37.8 C (100.0 F)
0.0 C (32.0 F)
n/a
n/a
Jul
40.6 C (105.1 F)
3.3 C (37.9 F)
n/a
n/a
Aug
40.6 C (105.1 F)
3.9 C (39.0 F)
n/a
n/a
Sep
38.9 C (102.0 F)
-2.8 C (27.0 F)
n/a
n/a
Oct
33.9 C (93.0 F)
-10.6 C (12.9 F)
n/a
n/a
Nov
30.0 C (86.0 F)
-18.9 C (-2.0 F)
n/a
n/a
Dec
24.4 C (75.9 F)
-27.8 C (-18.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Cairo 3 S still stand. 1936 holds the most, with 50.
Standing records at Cairo 3 S by the year they were set
Year set
Standing records
1899
20
1900
25
1901
4
1902
32
1903
20
1904
28
1905
7
1906
22
1907
18
1908
19
1909
24
1910
22
1911
24
1912
14
1913
23
1914
43
1915
21
1916
10
1920
11
1921
13
1922
10
1923
21
1924
19
1925
18
1926
21
1927
6
1928
13
1929
15
1930
24
1931
19
1932
33
1933
25
1934
25
1935
6
1936
50
1937
16
1938
15
1939
22
1940
30
1941
18
1942
26
1943
17
1944
13
1945
23
1946
14
1947
32
1948
17
1949
18
1950
20
1951
16
1952
13
1953
20
1954
14
1955
15
1956
21
1957
13
1958
12
1959
12
1960
21
1961
15
1962
26
1963
20
1964
11
1965
17
1966
12
1967
11
1968
13
1969
6
1970
12
1971
11
1972
24
1973
13
1974
14
1975
7
1976
31
1977
19
1978
12
1979
18
1980
24
1981
5
All-Time Record Progression
4 new records
4 all-time records were set at Cairo 3 S between 13 September 1947 and 10 January 1978. Each dot is a new record.
When Cairo 3 S set new all-time records
Date
Kind
Detail
1947-09-13
Record daily precipitation
Record daily precipitation 96.8 mm (3.8 in)
1967-07-12
Record daily precipitation
Record daily precipitation 103.1 mm (4.1 in)
1973-08-10
Record high minimum temperature
Record high minimum temperature 26.1 C (79.0 F)
1978-01-10
Record low maximum temperature
Record low maximum temperature -12.8 C (9.0 F)
Wettest Day of Each Month
Jul: 103.1 mm (4.1 in)
The wettest day on record for each calendar month at Cairo 3 S. The most was 103.1 mm (4.1 in) on 12 July 1967.
Record daily precipitation for each month at Cairo 3 S
Month
Record daily precipitation (mm)
Date
Jan
53.3 mm (2.1 in)
12 January 1913
Feb
54.6 mm (2.1 in)
13 February 1966
Mar
70.4 mm (2.8 in)
23 March 1936
Apr
88.6 mm (3.5 in)
13 April 1948
May
61.5 mm (2.4 in)
7 May 1967
Jun
88.9 mm (3.5 in)
17 June 1912
Jul
103.1 mm (4.1 in)
12 July 1967
Aug
96.5 mm (3.8 in)
2 August 1899
Sep
99.1 mm (3.9 in)
13 September 1971
Oct
80.0 mm (3.1 in)
15 October 1954
Nov
63.2 mm (2.5 in)
4 November 1936
Dec
68.6 mm (2.7 in)
15 December 1948
Period of Record Coverage
1899 to 1981
Complete yearUnder 90 percent of days
80 years of record at Cairo 3 S, 1899 to 1981. 28 years have data for under 90 percent of days and are left out of rankings: 1899, 1900, 1901, 1902, 1903, 1905, 1907, 1910 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 48 complete years at Cairo 3 S, 1906 to 1979. Blue stripes are years cooler than the station's own mean of 12.2 C (53.9 F); red stripes are warmer. The coolest year was 1958, at 10.6 C (51.0 F), and the warmest was 1911, at 13.9 C (57.0 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Cairo 3 S as warming stripes, 1906 to 1979
Year
Annual mean temperature
Difference from the station mean
1906
13.0 C
+0.80 C
1908
13.0 C
+0.78 C
1909
12.4 C
+0.17 C
1911
13.9 C
+1.73 C
1913
12.9 C
+0.75 C
1914
12.2 C
+0.06 C
1915
12.4 C
+0.19 C
1921
13.5 C
+1.31 C
1926
11.2 C
-0.97 C
1931
12.9 C
+0.75 C
1932
12.7 C
+0.50 C
1933
13.0 C
+0.80 C
1934
12.1 C
-0.13 C
1939
13.3 C
+1.12 C
1940
11.6 C
-0.60 C
1941
12.8 C
+0.59 C
1942
12.4 C
+0.21 C
1943
11.9 C
-0.28 C
1944
12.3 C
+0.12 C
1945
12.4 C
+0.19 C
1946
13.3 C
+1.07 C
1947
12.0 C
-0.23 C
1948
12.1 C
-0.04 C
1949
13.2 C
+1.02 C
1951
12.0 C
-0.18 C
1952
12.5 C
+0.35 C
1955
11.8 C
-0.34 C
1956
12.0 C
-0.15 C
1957
12.3 C
+0.09 C
1958
10.6 C
-1.62 C
1959
12.3 C
+0.10 C
1960
11.1 C
-1.11 C
1962
11.0 C
-1.18 C
1963
10.7 C
-1.49 C
1964
12.0 C
-0.16 C
1965
11.9 C
-0.24 C
1966
11.4 C
-0.78 C
1967
11.9 C
-0.27 C
1968
11.6 C
-0.56 C
1969
11.7 C
-0.45 C
1970
12.4 C
+0.23 C
1971
12.4 C
+0.17 C
1972
11.9 C
-0.29 C
1975
12.9 C
+0.73 C
1976
11.2 C
-1.03 C
1977
11.9 C
-0.33 C
1978
11.3 C
-0.85 C
1979
11.6 C
-0.60 C
The annual mean temperature here has fallen by 0.2 C (0.1 to 0.3) per decade over 1906 to 1979. In Fahrenheit: 0.3 F (0.2 to 0.5) 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 Cairo 3 S
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.2 C (-0.3 to -0.1) per decade
-0.3 F (-0.5 to -0.2) per decade
1906 to 1979
48
Fall
Mean daily maximum
-0.2 C (-0.3 to -0.1) per decade
-0.4 F (-0.6 to -0.2) per decade
1906 to 1979
48
Fall
Mean daily minimum
-0.2 C (-0.3 to -0.1) per decade
-0.3 F (-0.5 to -0.1) per decade
1906 to 1979
48
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 1981
Yearly extremes at Cairo 3 S: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.6 C (105.1 F)
1934
35.6 C (96.1 F)
80
Coldest night (TNn)
-34.4 C (-29.9 F)
1936
-20.0 C (-4.0 F)
80
Wettest day (Rx1day)
103.1 mm (4.1 in)
1967
50.8 mm (2.0 in)
80
Wettest five days (Rx5day)
204.1 mm (8.0 in)
1948
90.4 mm (3.6 in)
80
Longest dry spell (CDD)
44 days
1963
17 days
80
Hottest day (TXx)
The hottest day of the year at Cairo 3 S, 1899 to 1981. The record is 40.6 C (105.1 F) in 1934, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Cairo 3 S by year
Year
Hottest day (TXx)
1899
36.1 C (97.0 F)
1900
38.9 C (102.0 F)
1901
15.6 C (60.1 F)
1902
37.2 C (99.0 F)
1903
36.1 C (97.0 F)
1904
35.6 C (96.1 F)
1905
33.9 C (93.0 F)
1906
35.0 C (95.0 F)
1907
34.4 C (93.9 F)
1908
36.7 C (98.1 F)
1909
34.4 C (93.9 F)
1910
35.6 C (96.1 F)
1911
38.9 C (102.0 F)
1912
35.6 C (96.1 F)
1913
36.1 C (97.0 F)
1914
38.9 C (102.0 F)
1915
35.0 C (95.0 F)
1916
31.7 C (89.1 F)
1920
32.2 C (90.0 F)
1921
35.6 C (96.1 F)
1922
33.9 C (93.0 F)
1923
36.1 C (97.0 F)
1924
36.1 C (97.0 F)
1925
36.1 C (97.0 F)
1926
36.7 C (98.1 F)
1927
25.0 C (77.0 F)
1928
35.0 C (95.0 F)
1929
33.9 C (93.0 F)
1930
39.4 C (102.9 F)
1931
37.2 C (99.0 F)
1932
38.3 C (100.9 F)
1933
37.2 C (99.0 F)
1934
40.6 C (105.1 F)
1935
30.6 C (87.1 F)
1936
40.6 C (105.1 F)
1937
35.0 C (95.0 F)
1938
37.2 C (99.0 F)
1939
36.7 C (98.1 F)
1940
37.2 C (99.0 F)
1941
36.1 C (97.0 F)
1942
35.0 C (95.0 F)
1943
35.0 C (95.0 F)
1944
36.7 C (98.1 F)
1945
35.0 C (95.0 F)
1946
35.0 C (95.0 F)
1947
33.9 C (93.0 F)
1948
38.3 C (100.9 F)
1949
38.3 C (100.9 F)
1950
33.3 C (91.9 F)
1951
37.8 C (100.0 F)
1952
36.7 C (98.1 F)
1953
38.9 C (102.0 F)
1954
38.3 C (100.9 F)
1955
37.8 C (100.0 F)
1956
34.4 C (93.9 F)
1957
36.7 C (98.1 F)
1958
33.3 C (91.9 F)
1959
35.6 C (96.1 F)
1960
33.9 C (93.0 F)
1961
33.3 C (91.9 F)
1962
36.1 C (97.0 F)
1963
35.0 C (95.0 F)
1964
35.0 C (95.0 F)
1965
36.1 C (97.0 F)
1966
36.7 C (98.1 F)
1967
35.0 C (95.0 F)
1968
35.6 C (96.1 F)
1969
35.6 C (96.1 F)
1970
36.7 C (98.1 F)
1971
36.1 C (97.0 F)
1972
35.0 C (95.0 F)
1973
35.0 C (95.0 F)
1974
33.3 C (91.9 F)
1975
35.0 C (95.0 F)
1976
33.9 C (93.0 F)
1977
35.0 C (95.0 F)
1978
33.9 C (93.0 F)
1979
33.3 C (91.9 F)
1980
36.1 C (97.0 F)
1981
31.7 C (89.1 F)
Coldest night (TNn)
The coldest night of the year at Cairo 3 S, 1899 to 1981. The record is -34.4 C (-29.9 F) in 1936, marked on the chart; the median year is -20.0 C (-4.0 F).
Coldest night (TNn) at Cairo 3 S by year
Year
Coldest night (TNn)
1899
-3.9 C (25.0 F)
1900
-20.0 C (-4.0 F)
1901
-17.8 C (0.0 F)
1902
-12.8 C (9.0 F)
1903
-23.3 C (-9.9 F)
1904
-22.8 C (-9.0 F)
1905
-26.7 C (-16.1 F)
1906
-18.9 C (-2.0 F)
1907
-15.6 C (3.9 F)
1908
-15.6 C (3.9 F)
1909
-17.8 C (0.0 F)
1910
-20.6 C (-5.1 F)
1911
-13.3 C (8.1 F)
1912
-20.0 C (-4.0 F)
1913
-16.1 C (3.0 F)
1914
-27.2 C (-17.0 F)
1915
-15.0 C (5.0 F)
1916
-17.2 C (1.0 F)
1920
-13.3 C (8.1 F)
1921
-17.8 C (0.0 F)
1922
-16.7 C (1.9 F)
1923
-20.6 C (-5.1 F)
1924
-20.0 C (-4.0 F)
1925
-27.2 C (-17.0 F)
1926
-26.7 C (-16.1 F)
1927
-18.9 C (-2.0 F)
1928
-20.6 C (-5.1 F)
1929
-25.0 C (-13.0 F)
1930
-18.9 C (-2.0 F)
1931
-16.7 C (1.9 F)
1932
-22.8 C (-9.0 F)
1933
-22.2 C (-8.0 F)
1934
-30.0 C (-22.0 F)
1935
-23.9 C (-11.0 F)
1936
-34.4 C (-29.9 F)
1937
-20.0 C (-4.0 F)
1938
-15.6 C (3.9 F)
1939
-17.8 C (0.0 F)
1940
-27.2 C (-17.0 F)
1941
-16.1 C (3.0 F)
1942
-26.7 C (-16.1 F)
1943
-25.0 C (-13.0 F)
1944
-18.3 C (-0.9 F)
1945
-19.4 C (-2.9 F)
1946
-16.1 C (3.0 F)
1947
-17.2 C (1.0 F)
1948
-30.6 C (-23.1 F)
1949
-14.4 C (6.1 F)
1950
-19.4 C (-2.9 F)
1951
-20.0 C (-4.0 F)
1952
-13.9 C (7.0 F)
1953
-16.1 C (3.0 F)
1954
-17.2 C (1.0 F)
1955
-21.1 C (-6.0 F)
1956
-17.2 C (1.0 F)
1957
-28.9 C (-20.0 F)
1958
-20.6 C (-5.1 F)
1959
-17.8 C (0.0 F)
1960
-17.8 C (0.0 F)
1961
-29.4 C (-20.9 F)
1962
-27.8 C (-18.0 F)
1963
-30.0 C (-22.0 F)
1964
-20.6 C (-5.1 F)
1965
-26.1 C (-15.0 F)
1966
-23.3 C (-9.9 F)
1967
-23.9 C (-11.0 F)
1968
-27.2 C (-17.0 F)
1969
-19.4 C (-2.9 F)
1970
-25.6 C (-14.1 F)
1971
-21.1 C (-6.0 F)
1972
-22.8 C (-9.0 F)
1973
-17.2 C (1.0 F)
1974
-12.8 C (9.0 F)
1975
-18.3 C (-0.9 F)
1976
-21.1 C (-6.0 F)
1977
-28.9 C (-20.0 F)
1978
-22.8 C (-9.0 F)
1979
-24.4 C (-11.9 F)
1980
-17.8 C (0.0 F)
1981
-22.2 C (-8.0 F)
Wettest day (Rx1day)
The wettest day of the year at Cairo 3 S, 1899 to 1981. The record is 103.1 mm (4.1 in) in 1967, marked on the chart; the median year is 50.8 mm (2.0 in).
Wettest day (Rx1day) at Cairo 3 S by year
Year
Wettest day (Rx1day)
1899
96.5 mm (3.8 in)
1900
55.9 mm (2.2 in)
1901
20.3 mm (0.8 in)
1902
30.2 mm (1.2 in)
1903
50.8 mm (2.0 in)
1904
33.0 mm (1.3 in)
1905
54.1 mm (2.1 in)
1906
38.1 mm (1.5 in)
1907
54.6 mm (2.1 in)
1908
35.6 mm (1.4 in)
1909
63.5 mm (2.5 in)
1910
33.0 mm (1.3 in)
1911
50.8 mm (2.0 in)
1912
88.9 mm (3.5 in)
1913
54.6 mm (2.1 in)
1914
51.8 mm (2.0 in)
1915
73.7 mm (2.9 in)
1916
40.6 mm (1.6 in)
1920
29.7 mm (1.2 in)
1921
82.6 mm (3.3 in)
1922
63.0 mm (2.5 in)
1923
83.8 mm (3.3 in)
1924
47.0 mm (1.9 in)
1925
53.3 mm (2.1 in)
1926
82.6 mm (3.3 in)
1927
22.9 mm (0.9 in)
1928
31.0 mm (1.2 in)
1929
37.1 mm (1.5 in)
1930
24.1 mm (0.9 in)
1931
69.1 mm (2.7 in)
1932
42.9 mm (1.7 in)
1933
86.9 mm (3.4 in)
1934
70.4 mm (2.8 in)
1935
44.5 mm (1.8 in)
1936
70.4 mm (2.8 in)
1937
71.1 mm (2.8 in)
1938
61.0 mm (2.4 in)
1939
57.9 mm (2.3 in)
1940
55.9 mm (2.2 in)
1941
50.8 mm (2.0 in)
1942
46.2 mm (1.8 in)
1943
64.8 mm (2.6 in)
1944
45.7 mm (1.8 in)
1945
45.7 mm (1.8 in)
1946
52.1 mm (2.1 in)
1947
96.8 mm (3.8 in)
1948
88.6 mm (3.5 in)
1949
50.8 mm (2.0 in)
1950
44.5 mm (1.8 in)
1951
40.1 mm (1.6 in)
1952
34.5 mm (1.4 in)
1953
54.6 mm (2.1 in)
1954
80.0 mm (3.1 in)
1955
41.1 mm (1.6 in)
1956
50.8 mm (2.0 in)
1957
40.1 mm (1.6 in)
1958
48.8 mm (1.9 in)
1959
37.6 mm (1.5 in)
1960
67.8 mm (2.7 in)
1961
73.7 mm (2.9 in)
1962
60.5 mm (2.4 in)
1963
55.4 mm (2.2 in)
1964
34.5 mm (1.4 in)
1965
43.9 mm (1.7 in)
1966
54.6 mm (2.1 in)
1967
103.1 mm (4.1 in)
1968
48.3 mm (1.9 in)
1969
50.8 mm (2.0 in)
1970
47.5 mm (1.9 in)
1971
99.1 mm (3.9 in)
1972
41.9 mm (1.6 in)
1973
46.7 mm (1.8 in)
1974
62.7 mm (2.5 in)
1975
69.6 mm (2.7 in)
1976
57.7 mm (2.3 in)
1977
33.3 mm (1.3 in)
1978
50.8 mm (2.0 in)
1979
34.3 mm (1.4 in)
1980
41.9 mm (1.6 in)
1981
38.1 mm (1.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Cairo 3 S, 1899 to 1981. The record is 204.1 mm (8.0 in) in 1948, marked on the chart; the median year is 90.4 mm (3.6 in).
Wettest five days (Rx5day) at Cairo 3 S by year
Year
Wettest five days (Rx5day)
1899
135.9 mm (5.4 in)
1900
55.9 mm (2.2 in)
1901
30.5 mm (1.2 in)
1902
46.0 mm (1.8 in)
1903
94.2 mm (3.7 in)
1904
58.5 mm (2.3 in)
1905
100.9 mm (4.0 in)
1906
103.1 mm (4.1 in)
1907
99.0 mm (3.9 in)
1908
72.9 mm (2.9 in)
1909
69.9 mm (2.8 in)
1910
46.9 mm (1.8 in)
1911
90.5 mm (3.6 in)
1912
129.5 mm (5.1 in)
1913
101.5 mm (4.0 in)
1914
90.4 mm (3.6 in)
1915
155.5 mm (6.1 in)
1916
75.9 mm (3.0 in)
1920
61.2 mm (2.4 in)
1921
95.8 mm (3.8 in)
1922
90.5 mm (3.6 in)
1923
83.8 mm (3.3 in)
1924
94.0 mm (3.7 in)
1925
85.3 mm (3.4 in)
1926
125.2 mm (4.9 in)
1927
78.7 mm (3.1 in)
1928
65.8 mm (2.6 in)
1929
68.1 mm (2.7 in)
1930
24.1 mm (0.9 in)
1931
128.3 mm (5.1 in)
1932
79.5 mm (3.1 in)
1933
103.8 mm (4.1 in)
1934
82.2 mm (3.2 in)
1935
85.4 mm (3.4 in)
1936
104.5 mm (4.1 in)
1937
96.1 mm (3.8 in)
1938
119.2 mm (4.7 in)
1939
92.4 mm (3.6 in)
1940
71.1 mm (2.8 in)
1941
125.2 mm (4.9 in)
1942
75.9 mm (3.0 in)
1943
104.9 mm (4.1 in)
1944
71.3 mm (2.8 in)
1945
95.2 mm (3.7 in)
1946
86.4 mm (3.4 in)
1947
101.1 mm (4.0 in)
1948
204.1 mm (8.0 in)
1949
81.6 mm (3.2 in)
1950
73.6 mm (2.9 in)
1951
91.1 mm (3.6 in)
1952
75.9 mm (3.0 in)
1953
85.6 mm (3.4 in)
1954
92.2 mm (3.6 in)
1955
57.8 mm (2.3 in)
1956
72.7 mm (2.9 in)
1957
66.2 mm (2.6 in)
1958
105.8 mm (4.2 in)
1959
67.3 mm (2.6 in)
1960
96.5 mm (3.8 in)
1961
145.4 mm (5.7 in)
1962
87.4 mm (3.4 in)
1963
101.4 mm (4.0 in)
1964
60.7 mm (2.4 in)
1965
55.0 mm (2.2 in)
1966
92.7 mm (3.6 in)
1967
106.1 mm (4.2 in)
1968
119.2 mm (4.7 in)
1969
96.5 mm (3.8 in)
1970
94.5 mm (3.7 in)
1971
124.7 mm (4.9 in)
1972
90.7 mm (3.6 in)
1973
80.7 mm (3.2 in)
1974
109.4 mm (4.3 in)
1975
98.5 mm (3.9 in)
1976
89.7 mm (3.5 in)
1977
58.5 mm (2.3 in)
1978
90.4 mm (3.6 in)
1979
73.7 mm (2.9 in)
1980
77.9 mm (3.1 in)
1981
53.3 mm (2.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Cairo 3 S, 1899 to 1981. The record is 44 days in 1963, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Cairo 3 S by year
Year
Longest dry spell (CDD)
1899
27 days
1900
12 days
1901
8 days
1902
27 days
1903
23 days
1904
20 days
1905
20 days
1906
16 days
1907
17 days
1908
20 days
1909
16 days
1910
20 days
1911
16 days
1912
18 days
1913
14 days
1914
21 days
1915
16 days
1916
5 days
1920
20 days
1921
13 days
1922
25 days
1923
28 days
1924
30 days
1925
15 days
1926
11 days
1927
11 days
1928
9 days
1929
9 days
1930
20 days
1931
18 days
1932
39 days
1933
12 days
1934
19 days
1935
14 days
1936
32 days
1937
21 days
1938
21 days
1939
22 days
1940
14 days
1941
19 days
1942
13 days
1943
19 days
1944
11 days
1945
11 days
1946
17 days
1947
16 days
1948
19 days
1949
15 days
1950
20 days
1951
19 days
1952
23 days
1953
25 days
1954
13 days
1955
14 days
1956
14 days
1957
19 days
1958
15 days
1959
18 days
1960
13 days
1961
19 days
1962
15 days
1963
44 days
1964
22 days
1965
18 days
1966
13 days
1967
21 days
1968
20 days
1969
16 days
1970
15 days
1971
13 days
1972
14 days
1973
15 days
1974
21 days
1975
15 days
1976
15 days
1977
17 days
1978
10 days
1979
9 days
1980
20 days
1981
13 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 Cairo 3 S falls on 3 May and the median first autumn frost on 9 October, which leaves a median of 157 days between them.
Fitted over all years, the growing season changes by -0.5 days per decade at this station.
Frost dates and growing season at Cairo 3 S
Measure
Median, all years
Earliest period
Recent period (1944 to 1979)
Recent against earliest
Fitted trend
Last spring frost
3 May
n/a
3 May
n/a
+0.3 days per decade
First autumn frost
9 October
n/a
5 October
n/a
-0.2 days per decade
Growing days
157 days
n/a
158 days
n/a
-0.5 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
55 years, 1906 to 1979
A day with at least 54.7 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 117.4 mm (4.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Cairo 3 S: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
54.7 mm (2.2 in)
5 years
70.9 mm (2.8 in)
10 years
81.8 mm (3.2 in)
25 years
96.0 mm (3.8 in)
50 years
106.7 mm (4.2 in)
100 years
117.4 mm (4.6 in)
Longer than the 55 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, 55 years of values from 1906 to 1979.
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: 103.1 mm (4.1 in) in 1967; 99.1 mm (3.9 in) in 1971; 96.8 mm (3.8 in) in 1947.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Cairo 3 S, at 1966. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1966 ran 0.3 C (0.6 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Cairo 3 S, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1966
+0.3
+0.6
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 Cairo 3 S standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Cairo 3 S 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.