Record envelope, standing records and threshold days for Philo (USC00336590), Ohio, United States, with 65 years of record.
Key Facts for Philo
Philo (USC00336590) is a weather station in Ohio, United States at 39.87 latitude and -81.90 longitude, 229 m (751 ft) above sea level.
The station reports from 1901 to 1965, 65 years of record.
1,464 records set at Philo still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Philo set a daily record precipitation of 63.2 mm (2.5 in) on 12 September 1965.
About the Station
Location: Ohio, United States, 39.87 latitude, -81.90 longitude.
Elevation: 229 m (751 ft).
Period of record: 1901 to 1965, 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 Philo. 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 Philo, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
24.4 C (75.9 F)
-32.8 C (-27.0 F)
n/a
n/a
Feb
24.4 C (75.9 F)
-28.3 C (-18.9 F)
n/a
n/a
Mar
30.6 C (87.1 F)
-21.1 C (-6.0 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-12.8 C (9.0 F)
n/a
n/a
May
36.1 C (97.0 F)
-5.6 C (21.9 F)
n/a
n/a
Jun
38.3 C (100.9 F)
-0.6 C (30.9 F)
n/a
n/a
Jul
41.1 C (106.0 F)
3.9 C (39.0 F)
n/a
n/a
Aug
41.7 C (107.1 F)
0.6 C (33.1 F)
n/a
n/a
Sep
41.7 C (107.1 F)
-1.7 C (28.9 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-9.4 C (15.1 F)
n/a
n/a
Nov
28.9 C (84.0 F)
-21.7 C (-7.1 F)
n/a
n/a
Dec
23.3 C (73.9 F)
-28.3 C (-18.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Philo still stand. 1930 holds the most, with 48.
Standing records at Philo by the year they were set
Year set
Standing records
1901
10
1902
30
1903
29
1905
11
1906
27
1907
18
1908
30
1909
25
1910
20
1911
24
1912
27
1913
22
1914
37
1915
22
1916
21
1917
36
1918
30
1919
12
1920
22
1921
15
1922
15
1923
19
1924
21
1925
32
1926
19
1927
31
1928
19
1929
33
1930
48
1931
29
1932
33
1933
27
1934
42
1935
17
1936
41
1937
22
1938
19
1939
31
1940
25
1941
20
1942
24
1943
19
1944
18
1945
15
1946
15
1947
26
1948
23
1949
19
1950
23
1951
23
1952
8
1953
24
1954
20
1955
12
1956
22
1957
15
1958
15
1959
22
1960
20
1961
18
1962
19
1963
22
1964
20
1965
11
All-Time Record Progression
2 new records
2 all-time records were set at Philo between 23 July 1934 and 26 July 1934. Each dot is a new record.
When Philo set new all-time records
Date
Kind
Detail
1934-07-23
Record high minimum temperature
Record high minimum temperature 25.6 C (78.1 F)
1934-07-26
Record high minimum temperature
Record high minimum temperature 26.7 C (80.1 F)
Wettest Day of Each Month
Jul: 182.1 mm (7.2 in)
The wettest day on record for each calendar month at Philo. The most was 182.1 mm (7.2 in) on 14 July 1913.
Record daily precipitation for each month at Philo
Month
Record daily precipitation (mm)
Date
Jan
58.4 mm (2.3 in)
22 January 1937
Feb
46.7 mm (1.8 in)
26 February 1945
Mar
74.2 mm (2.9 in)
13 March 1907
Apr
55.6 mm (2.2 in)
12 April 1948
May
102.4 mm (4.0 in)
27 May 1956
Jun
102.9 mm (4.1 in)
21 June 1937
Jul
182.1 mm (7.2 in)
14 July 1913
Aug
94.5 mm (3.7 in)
22 August 1913
Sep
79.8 mm (3.1 in)
25 September 1961
Oct
71.4 mm (2.8 in)
17 October 1936
Nov
58.7 mm (2.3 in)
4 November 1936
Dec
42.7 mm (1.7 in)
24 December 1921
Period of Record Coverage
1901 to 1965
Complete yearUnder 90 percent of days
64 years of record at Philo, 1901 to 1965. 2 years have data for under 90 percent of days and are left out of rankings: 1901, 1965.
Cooler than the station meanWarmer than the station mean
One stripe for each of 59 complete years at Philo, 1902 to 1964. Blue stripes are years cooler than the station's own mean of 11.7 C (53.1 F); red stripes are warmer. The coolest year was 1917, at 9.7 C (49.5 F), and the warmest was 1921, at 13.1 C (55.6 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Philo as warming stripes, 1902 to 1964
Year
Annual mean temperature
Difference from the station mean
1902
11.6 C
-0.16 C
1905
11.1 C
-0.61 C
1906
12.0 C
+0.24 C
1907
11.1 C
-0.66 C
1908
12.3 C
+0.56 C
1909
11.7 C
-0.01 C
1910
11.2 C
-0.52 C
1911
12.6 C
+0.84 C
1912
10.8 C
-0.95 C
1913
12.1 C
+0.39 C
1914
11.4 C
-0.38 C
1915
11.3 C
-0.40 C
1916
11.3 C
-0.49 C
1917
9.7 C
-2.04 C
1918
11.6 C
-0.11 C
1919
12.2 C
+0.47 C
1920
10.8 C
-0.90 C
1921
13.1 C
+1.39 C
1922
12.6 C
+0.86 C
1923
11.6 C
-0.18 C
1924
10.5 C
-1.26 C
1925
11.6 C
-0.11 C
1926
11.3 C
-0.48 C
1929
11.1 C
-0.62 C
1930
12.3 C
+0.57 C
1931
13.0 C
+1.21 C
1932
12.3 C
+0.52 C
1933
12.6 C
+0.87 C
1934
12.0 C
+0.26 C
1935
11.7 C
-0.09 C
1936
11.8 C
+0.01 C
1937
11.6 C
-0.14 C
1938
13.0 C
+1.27 C
1939
13.0 C
+1.26 C
1940
11.1 C
-0.60 C
1941
12.6 C
+0.83 C
1942
12.1 C
+0.35 C
1943
11.4 C
-0.33 C
1944
12.1 C
+0.39 C
1945
11.6 C
-0.10 C
1946
12.5 C
+0.78 C
1947
11.4 C
-0.38 C
1948
11.9 C
+0.14 C
1949
12.8 C
+1.04 C
1950
11.0 C
-0.76 C
1951
11.2 C
-0.53 C
1952
12.0 C
+0.22 C
1953
12.4 C
+0.69 C
1954
12.1 C
+0.40 C
1955
12.3 C
+0.54 C
1956
12.1 C
+0.32 C
1957
12.1 C
+0.32 C
1958
10.5 C
-1.20 C
1959
12.3 C
+0.60 C
1960
10.9 C
-0.81 C
1961
11.5 C
-0.27 C
1962
10.9 C
-0.84 C
1963
10.3 C
-1.40 C
1964
11.7 C
-0.03 C
The fitted trend in annual mean temperature here over 1902 to 1964 is 0.02 C (-0.09 to 0.13) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.04 F (-0.15 to 0.23) per decade. The slope is a straight line fitted to 59 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Philo
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.02 C (-0.09 to 0.13) per decade
0.04 F (-0.15 to 0.23) per decade
1902 to 1964
59
Not clearly different from zero
Mean daily maximum
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.3) per decade
1902 to 1964
59
Not clearly different from zero
Mean daily minimum
-0.01 C (-0.12 to 0.09) per decade
-0.03 F (-0.22 to 0.17) per decade
1902 to 1964
59
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
1901 to 1965
Yearly extremes at Philo: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.7 C (107.1 F)
1930
36.7 C (98.1 F)
64
Coldest night (TNn)
-32.8 C (-27.0 F)
1912
-22.2 C (-8.0 F)
64
Wettest day (Rx1day)
182.1 mm (7.2 in)
1913
50.2 mm (2.0 in)
64
Wettest five days (Rx5day)
227.0 mm (8.9 in)
1913
88.4 mm (3.5 in)
64
Longest dry spell (CDD)
43 days
1963
18 days
64
Hottest day (TXx)
The hottest day of the year at Philo, 1901 to 1965. The record is 41.7 C (107.1 F) in 1930, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Philo by year
Year
Hottest day (TXx)
1901
30.6 C (87.1 F)
1902
36.1 C (97.0 F)
1903
37.8 C (100.0 F)
1905
36.7 C (98.1 F)
1906
35.6 C (96.1 F)
1907
33.9 C (93.0 F)
1908
38.9 C (102.0 F)
1909
34.4 C (93.9 F)
1910
35.6 C (96.1 F)
1911
38.9 C (102.0 F)
1912
35.0 C (95.0 F)
1913
37.8 C (100.0 F)
1914
37.8 C (100.0 F)
1915
34.4 C (93.9 F)
1916
36.7 C (98.1 F)
1917
34.4 C (93.9 F)
1918
41.1 C (106.0 F)
1919
36.7 C (98.1 F)
1920
33.3 C (91.9 F)
1921
35.6 C (96.1 F)
1922
35.6 C (96.1 F)
1923
35.0 C (95.0 F)
1924
36.7 C (98.1 F)
1925
38.3 C (100.9 F)
1926
38.3 C (100.9 F)
1927
35.6 C (96.1 F)
1928
33.3 C (91.9 F)
1929
34.4 C (93.9 F)
1930
41.7 C (107.1 F)
1931
38.9 C (102.0 F)
1932
37.2 C (99.0 F)
1933
39.4 C (102.9 F)
1934
40.6 C (105.1 F)
1935
36.7 C (98.1 F)
1936
41.1 C (106.0 F)
1937
36.7 C (98.1 F)
1938
35.6 C (96.1 F)
1939
39.4 C (102.9 F)
1940
38.3 C (100.9 F)
1941
38.3 C (100.9 F)
1942
37.2 C (99.0 F)
1943
36.7 C (98.1 F)
1944
38.3 C (100.9 F)
1945
35.6 C (96.1 F)
1946
36.1 C (97.0 F)
1947
35.0 C (95.0 F)
1948
37.2 C (99.0 F)
1949
36.1 C (97.0 F)
1950
33.9 C (93.0 F)
1951
35.0 C (95.0 F)
1952
37.2 C (99.0 F)
1953
41.7 C (107.1 F)
1954
40.6 C (105.1 F)
1955
37.8 C (100.0 F)
1956
35.6 C (96.1 F)
1957
37.2 C (99.0 F)
1958
34.4 C (93.9 F)
1959
37.2 C (99.0 F)
1960
35.0 C (95.0 F)
1961
34.4 C (93.9 F)
1962
39.4 C (102.9 F)
1963
36.1 C (97.0 F)
1964
37.2 C (99.0 F)
1965
37.2 C (99.0 F)
Coldest night (TNn)
The coldest night of the year at Philo, 1901 to 1965. The record is -32.8 C (-27.0 F) in 1912, marked on the chart; the median year is -22.2 C (-8.0 F).
Coldest night (TNn) at Philo by year
Year
Coldest night (TNn)
1901
-24.4 C (-11.9 F)
1902
-20.0 C (-4.0 F)
1903
-23.3 C (-9.9 F)
1905
-25.0 C (-13.0 F)
1906
-24.4 C (-11.9 F)
1907
-25.0 C (-13.0 F)
1908
-15.6 C (3.9 F)
1909
-20.0 C (-4.0 F)
1910
-26.1 C (-15.0 F)
1911
-22.2 C (-8.0 F)
1912
-32.8 C (-27.0 F)
1913
-18.3 C (-0.9 F)
1914
-26.1 C (-15.0 F)
1915
-21.7 C (-7.1 F)
1916
-22.2 C (-8.0 F)
1917
-28.3 C (-18.9 F)
1918
-30.0 C (-22.0 F)
1919
-21.7 C (-7.1 F)
1920
-19.4 C (-2.9 F)
1921
-13.3 C (8.1 F)
1922
-16.1 C (3.0 F)
1923
-19.4 C (-2.9 F)
1924
-22.8 C (-9.0 F)
1925
-29.4 C (-20.9 F)
1926
-27.2 C (-17.0 F)
1927
-17.8 C (0.0 F)
1928
-20.0 C (-4.0 F)
1929
-22.8 C (-9.0 F)
1930
-22.8 C (-9.0 F)
1931
-12.2 C (10.0 F)
1932
-25.0 C (-13.0 F)
1933
-22.2 C (-8.0 F)
1934
-28.3 C (-18.9 F)
1935
-22.8 C (-9.0 F)
1936
-27.8 C (-18.0 F)
1937
-20.0 C (-4.0 F)
1938
-16.1 C (3.0 F)
1939
-18.3 C (-0.9 F)
1940
-25.6 C (-14.1 F)
1941
-14.4 C (6.1 F)
1942
-26.1 C (-15.0 F)
1943
-21.1 C (-6.0 F)
1944
-21.1 C (-6.0 F)
1945
-21.1 C (-6.0 F)
1946
-17.8 C (0.0 F)
1947
-18.9 C (-2.0 F)
1948
-26.1 C (-15.0 F)
1949
-15.0 C (5.0 F)
1950
-23.9 C (-11.0 F)
1951
-26.7 C (-16.1 F)
1952
-15.0 C (5.0 F)
1953
-16.7 C (1.9 F)
1954
-16.7 C (1.9 F)
1955
-19.4 C (-2.9 F)
1956
-16.7 C (1.9 F)
1957
-22.2 C (-8.0 F)
1958
-22.8 C (-9.0 F)
1959
-22.8 C (-9.0 F)
1960
-21.1 C (-6.0 F)
1961
-25.0 C (-13.0 F)
1962
-23.3 C (-9.9 F)
1963
-28.3 C (-18.9 F)
1964
-20.6 C (-5.1 F)
1965
-23.3 C (-9.9 F)
Wettest day (Rx1day)
The wettest day of the year at Philo, 1901 to 1965. The record is 182.1 mm (7.2 in) in 1913, marked on the chart; the median year is 50.2 mm (2.0 in).
Wettest day (Rx1day) at Philo by year
Year
Wettest day (Rx1day)
1901
42.4 mm (1.7 in)
1902
49.3 mm (1.9 in)
1903
45.7 mm (1.8 in)
1905
50.0 mm (2.0 in)
1906
35.8 mm (1.4 in)
1907
106.7 mm (4.2 in)
1908
59.9 mm (2.4 in)
1909
82.0 mm (3.2 in)
1910
30.7 mm (1.2 in)
1911
42.2 mm (1.7 in)
1912
73.7 mm (2.9 in)
1913
182.1 mm (7.2 in)
1914
61.5 mm (2.4 in)
1915
69.6 mm (2.7 in)
1916
38.9 mm (1.5 in)
1917
37.3 mm (1.5 in)
1918
33.0 mm (1.3 in)
1919
73.7 mm (2.9 in)
1920
42.2 mm (1.7 in)
1921
61.0 mm (2.4 in)
1922
74.4 mm (2.9 in)
1923
45.0 mm (1.8 in)
1924
54.6 mm (2.1 in)
1925
42.2 mm (1.7 in)
1926
72.6 mm (2.9 in)
1927
48.8 mm (1.9 in)
1928
47.5 mm (1.9 in)
1929
50.3 mm (2.0 in)
1930
25.9 mm (1.0 in)
1931
61.5 mm (2.4 in)
1932
72.4 mm (2.9 in)
1933
49.8 mm (2.0 in)
1934
56.9 mm (2.2 in)
1935
76.5 mm (3.0 in)
1936
71.4 mm (2.8 in)
1937
102.9 mm (4.1 in)
1938
76.2 mm (3.0 in)
1939
43.2 mm (1.7 in)
1940
44.7 mm (1.8 in)
1941
63.8 mm (2.5 in)
1942
46.2 mm (1.8 in)
1943
54.1 mm (2.1 in)
1944
35.6 mm (1.4 in)
1945
70.9 mm (2.8 in)
1946
55.9 mm (2.2 in)
1947
36.8 mm (1.4 in)
1948
66.8 mm (2.6 in)
1949
45.2 mm (1.8 in)
1950
41.1 mm (1.6 in)
1951
37.6 mm (1.5 in)
1952
52.6 mm (2.1 in)
1953
37.6 mm (1.5 in)
1954
86.6 mm (3.4 in)
1955
45.7 mm (1.8 in)
1956
102.4 mm (4.0 in)
1957
34.0 mm (1.3 in)
1958
75.9 mm (3.0 in)
1959
41.1 mm (1.6 in)
1960
39.9 mm (1.6 in)
1961
79.8 mm (3.1 in)
1962
45.7 mm (1.8 in)
1963
40.6 mm (1.6 in)
1964
71.4 mm (2.8 in)
1965
63.2 mm (2.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Philo, 1901 to 1965. The record is 227.0 mm (8.9 in) in 1913, marked on the chart; the median year is 88.4 mm (3.5 in).
Wettest five days (Rx5day) at Philo by year
Year
Wettest five days (Rx5day)
1901
48.8 mm (1.9 in)
1902
90.6 mm (3.6 in)
1903
62.2 mm (2.4 in)
1905
74.7 mm (2.9 in)
1906
57.9 mm (2.3 in)
1907
146.6 mm (5.8 in)
1908
89.4 mm (3.5 in)
1909
125.2 mm (4.9 in)
1910
60.5 mm (2.4 in)
1911
92.9 mm (3.7 in)
1912
78.3 mm (3.1 in)
1913
227.0 mm (8.9 in)
1914
96.8 mm (3.8 in)
1915
103.1 mm (4.1 in)
1916
65.9 mm (2.6 in)
1917
65.0 mm (2.6 in)
1918
56.6 mm (2.2 in)
1919
104.9 mm (4.1 in)
1920
76.6 mm (3.0 in)
1921
121.4 mm (4.8 in)
1922
116.0 mm (4.6 in)
1923
89.6 mm (3.5 in)
1924
80.3 mm (3.2 in)
1925
99.3 mm (3.9 in)
1926
126.0 mm (5.0 in)
1927
87.6 mm (3.4 in)
1928
98.3 mm (3.9 in)
1929
81.7 mm (3.2 in)
1930
44.9 mm (1.8 in)
1931
111.5 mm (4.4 in)
1932
79.2 mm (3.1 in)
1933
89.6 mm (3.5 in)
1934
71.2 mm (2.8 in)
1935
122.5 mm (4.8 in)
1936
97.5 mm (3.8 in)
1937
143.0 mm (5.6 in)
1938
110.5 mm (4.4 in)
1939
85.9 mm (3.4 in)
1940
101.8 mm (4.0 in)
1941
78.8 mm (3.1 in)
1942
54.4 mm (2.1 in)
1943
78.5 mm (3.1 in)
1944
75.9 mm (3.0 in)
1945
112.4 mm (4.4 in)
1946
94.7 mm (3.7 in)
1947
88.1 mm (3.5 in)
1948
110.5 mm (4.4 in)
1949
74.7 mm (2.9 in)
1950
97.8 mm (3.9 in)
1951
79.1 mm (3.1 in)
1952
81.0 mm (3.2 in)
1953
63.2 mm (2.5 in)
1954
127.2 mm (5.0 in)
1955
68.6 mm (2.7 in)
1956
122.3 mm (4.8 in)
1957
55.7 mm (2.2 in)
1958
97.2 mm (3.8 in)
1959
62.5 mm (2.5 in)
1960
42.7 mm (1.7 in)
1961
94.2 mm (3.7 in)
1962
74.1 mm (2.9 in)
1963
88.6 mm (3.5 in)
1964
143.7 mm (5.7 in)
1965
77.1 mm (3.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Philo, 1901 to 1965. The record is 43 days in 1963, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Philo by year
Year
Longest dry spell (CDD)
1901
18 days
1902
20 days
1903
19 days
1905
12 days
1906
18 days
1907
15 days
1908
21 days
1909
13 days
1910
19 days
1911
19 days
1912
30 days
1913
14 days
1914
18 days
1915
15 days
1916
9 days
1917
21 days
1918
15 days
1919
18 days
1920
24 days
1921
13 days
1922
25 days
1923
15 days
1924
38 days
1925
26 days
1926
11 days
1927
17 days
1928
16 days
1929
14 days
1930
18 days
1931
18 days
1932
15 days
1933
12 days
1934
24 days
1935
10 days
1936
26 days
1937
11 days
1938
22 days
1939
15 days
1940
13 days
1941
27 days
1942
18 days
1943
19 days
1944
16 days
1945
15 days
1946
18 days
1947
18 days
1948
19 days
1949
14 days
1950
12 days
1951
17 days
1952
23 days
1953
24 days
1954
14 days
1955
35 days
1956
12 days
1957
15 days
1958
14 days
1959
19 days
1960
19 days
1961
13 days
1962
16 days
1963
43 days
1964
23 days
1965
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
59 years with a frost
Across 59 years with a frost, the median last spring frost at Philo falls on 2 May and the median first autumn frost on 11 October, which leaves a median of 161 days between them.
Fitted over all years, the growing season changes by -1.9 days per decade at this station.
Frost dates and growing season at Philo
Measure
Median, all years
Earliest period
Recent period (1935 to 1964)
Recent against earliest
Fitted trend
Last spring frost
2 May
n/a
2 May
n/a
-0.3 days per decade
First autumn frost
11 October
n/a
6 October
n/a
-2.1 days per decade
Growing days
161 days
n/a
157 days
n/a
-1.9 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, 1902 to 1964
A day with at least 52.4 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 146.6 mm (5.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Philo: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
52.4 mm (2.1 in)
5 years
71.7 mm (2.8 in)
10 years
86.6 mm (3.4 in)
25 years
108.1 mm (4.3 in)
50 years
126.4 mm (5.0 in)
100 years
146.6 mm (5.8 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 1902 to 1964.
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: 182.1 mm (7.2 in) in 1913; 106.7 mm (4.2 in) in 1907; 102.9 mm (4.1 in) in 1937.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Philo standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Philo 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.