Record envelope, standing records and threshold days for Bellefonte 4 S (USC00360530), Pennsylvania, United States, with 74 years of record.
Key Facts for Bellefonte 4 S
Bellefonte 4 S (USC00360530) is a weather station in Pennsylvania, United States at 40.85 latitude and -77.78 longitude, 339 m (1,112 ft) above sea level.
The station reports from 1900 to 1973, 74 years of record.
1,464 records set at Bellefonte 4 S still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Bellefonte 4 S set a daily record high minimum temperature of 21.1 C (70.0 F) on 11 June 1973.
About the Station
Location: Pennsylvania, United States, 40.85 latitude, -77.78 longitude.
Elevation: 339 m (1,112 ft).
Period of record: 1900 to 1973, 74 years.
Eligible elements: tmax, tmin, prcp, snow.
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 Bellefonte 4 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 Bellefonte 4 S, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
22.8 C (73.0 F)
-30.6 C (-23.1 F)
n/a
n/a
Feb
23.3 C (73.9 F)
-25.0 C (-13.0 F)
n/a
n/a
Mar
29.4 C (84.9 F)
-19.4 C (-2.9 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-11.1 C (12.0 F)
n/a
n/a
May
37.8 C (100.0 F)
-6.1 C (21.0 F)
n/a
n/a
Jun
37.2 C (99.0 F)
1.7 C (35.1 F)
n/a
n/a
Jul
42.2 C (108.0 F)
5.0 C (41.0 F)
n/a
n/a
Aug
38.3 C (100.9 F)
3.9 C (39.0 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-3.9 C (25.0 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-8.3 C (17.1 F)
n/a
n/a
Nov
26.7 C (80.1 F)
-13.9 C (7.0 F)
n/a
n/a
Dec
19.4 C (66.9 F)
-23.3 C (-9.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Bellefonte 4 S still stand. 1911 holds the most, with 56.
Standing records at Bellefonte 4 S by the year they were set
Year set
Standing records
1900
12
1901
23
1902
27
1903
41
1904
36
1905
40
1906
35
1907
44
1908
33
1909
44
1910
36
1911
56
1912
8
1935
35
1941
24
1942
13
1946
9
1947
39
1948
29
1949
37
1950
47
1951
42
1952
31
1953
37
1954
40
1955
31
1956
33
1957
29
1958
34
1959
33
1960
49
1961
40
1962
43
1963
38
1964
43
1965
31
1966
36
1967
37
1968
25
1969
20
1970
35
1971
26
1972
45
1973
18
All-Time Record Progression
2 new records
2 all-time records were set at Bellefonte 4 S between 16 October 1954 and 23 June 1972. Each dot is a new record.
When Bellefonte 4 S set new all-time records
Date
Kind
Detail
1954-10-16
Record daily precipitation
Record daily precipitation 104.1 mm (4.1 in)
1972-06-23
Record daily precipitation
Record daily precipitation 123.2 mm (4.9 in)
Wettest Day of Each Month
Jun: 123.2 mm (4.9 in)
The wettest day on record for each calendar month at Bellefonte 4 S. The most was 123.2 mm (4.9 in) on 23 June 1972.
Record daily precipitation for each month at Bellefonte 4 S
Month
Record daily precipitation (mm)
Date
Jan
52.8 mm (2.1 in)
11 January 1922
Feb
42.4 mm (1.7 in)
7 February 1951
Mar
61.0 mm (2.4 in)
5 March 1902
Apr
57.7 mm (2.3 in)
8 April 1902
May
88.9 mm (3.5 in)
13 May 1948
Jun
123.2 mm (4.9 in)
23 June 1972
Jul
77.5 mm (3.1 in)
16 July 1906
Aug
78.7 mm (3.1 in)
13 August 1955
Sep
57.7 mm (2.3 in)
29 September 1967
Oct
104.1 mm (4.1 in)
16 October 1954
Nov
67.6 mm (2.7 in)
25 November 1950
Dec
86.4 mm (3.4 in)
14 December 1901
Period of Record Coverage
1900 to 1973
Complete yearUnder 90 percent of days
44 years of record at Bellefonte 4 S, 1900 to 1973. 13 years have data for under 90 percent of days and are left out of rankings: 1900, 1901, 1906, 1908, 1912, 1935, 1941, 1942 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 25 complete years at Bellefonte 4 S, 1902 to 1971. Blue stripes are years cooler than the station's own mean of 9.5 C (49.2 F); red stripes are warmer. The coolest year was 1958, at 8.4 C (47.1 F), and the warmest was 1909, at 11.1 C (52.1 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Bellefonte 4 S as warming stripes, 1902 to 1971
Year
Annual mean temperature
Difference from the station mean
1902
10.7 C
+1.21 C
1903
10.6 C
+1.10 C
1904
9.0 C
-0.58 C
1905
10.6 C
+1.04 C
1907
10.3 C
+0.74 C
1909
11.1 C
+1.61 C
1948
10.0 C
+0.42 C
1949
10.8 C
+1.30 C
1950
8.9 C
-0.66 C
1951
9.3 C
-0.23 C
1952
10.1 C
+0.53 C
1955
9.8 C
+0.28 C
1956
9.3 C
-0.21 C
1958
8.4 C
-1.13 C
1959
10.0 C
+0.51 C
1960
8.8 C
-0.76 C
1961
9.3 C
-0.26 C
1962
8.8 C
-0.75 C
1963
8.7 C
-0.81 C
1964
9.0 C
-0.49 C
1965
9.0 C
-0.58 C
1966
8.9 C
-0.65 C
1967
8.6 C
-0.89 C
1970
9.1 C
-0.43 C
1971
9.3 C
-0.23 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1900 to 1973
Yearly extremes at Bellefonte 4 S: 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)
1911
35.0 C (95.0 F)
44
Coldest night (TNn)
-30.6 C (-23.1 F)
1912
-20.6 C (-5.1 F)
44
Wettest day (Rx1day)
123.2 mm (4.9 in)
1972
52.1 mm (2.0 in)
58
Wettest five days (Rx5day)
226.3 mm (8.9 in)
1972
81.9 mm (3.2 in)
58
Longest dry spell (CDD)
36 days
1908
17 days
58
Hottest day (TXx)
The hottest day of the year at Bellefonte 4 S, 1900 to 1973. The record is 42.2 C (108.0 F) in 1911, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Bellefonte 4 S by year
Year
Hottest day (TXx)
1900
32.8 C (91.0 F)
1901
36.1 C (97.0 F)
1902
32.8 C (91.0 F)
1903
33.9 C (93.0 F)
1904
35.6 C (96.1 F)
1905
36.1 C (97.0 F)
1906
35.6 C (96.1 F)
1907
37.2 C (99.0 F)
1908
38.9 C (102.0 F)
1909
37.2 C (99.0 F)
1910
36.1 C (97.0 F)
1911
42.2 C (108.0 F)
1912
29.4 C (84.9 F)
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1920
n/a
1921
n/a
1922
n/a
1923
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
35.6 C (96.1 F)
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
38.9 C (102.0 F)
1942
34.4 C (93.9 F)
1946
27.8 C (82.0 F)
1947
35.0 C (95.0 F)
1948
36.7 C (98.1 F)
1949
36.1 C (97.0 F)
1950
33.9 C (93.0 F)
1951
33.3 C (91.9 F)
1952
36.7 C (98.1 F)
1953
37.8 C (100.0 F)
1954
35.6 C (96.1 F)
1955
36.7 C (98.1 F)
1956
33.9 C (93.0 F)
1957
35.0 C (95.0 F)
1958
32.8 C (91.0 F)
1959
35.0 C (95.0 F)
1960
32.8 C (91.0 F)
1961
32.8 C (91.0 F)
1962
35.0 C (95.0 F)
1963
35.0 C (95.0 F)
1964
35.0 C (95.0 F)
1965
34.4 C (93.9 F)
1966
38.9 C (102.0 F)
1967
33.3 C (91.9 F)
1968
35.0 C (95.0 F)
1969
35.6 C (96.1 F)
1970
33.9 C (93.0 F)
1971
32.8 C (91.0 F)
1972
33.3 C (91.9 F)
1973
32.2 C (90.0 F)
Coldest night (TNn)
The coldest night of the year at Bellefonte 4 S, 1900 to 1973. The record is -30.6 C (-23.1 F) in 1912, marked on the chart; the median year is -20.6 C (-5.1 F).
Coldest night (TNn) at Bellefonte 4 S by year
Year
Coldest night (TNn)
1900
-13.9 C (7.0 F)
1901
-18.9 C (-2.0 F)
1902
-19.4 C (-2.9 F)
1903
-20.6 C (-5.1 F)
1904
-28.3 C (-18.9 F)
1905
-21.1 C (-6.0 F)
1906
-22.8 C (-9.0 F)
1907
-25.6 C (-14.1 F)
1908
-24.4 C (-11.9 F)
1909
-21.7 C (-7.1 F)
1910
-20.6 C (-5.1 F)
1911
-14.4 C (6.1 F)
1912
-30.6 C (-23.1 F)
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1920
n/a
1921
n/a
1922
n/a
1923
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
-6.1 C (21.0 F)
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
-10.0 C (14.0 F)
1942
-23.9 C (-11.0 F)
1946
-13.3 C (8.1 F)
1947
-22.8 C (-9.0 F)
1948
-28.3 C (-18.9 F)
1949
-18.9 C (-2.0 F)
1950
-21.7 C (-7.1 F)
1951
-18.3 C (-0.9 F)
1952
-17.2 C (1.0 F)
1953
-13.3 C (8.1 F)
1954
-18.9 C (-2.0 F)
1955
-20.6 C (-5.1 F)
1956
-13.9 C (7.0 F)
1957
-25.0 C (-13.0 F)
1958
-20.0 C (-4.0 F)
1959
-18.3 C (-0.9 F)
1960
-23.3 C (-9.9 F)
1961
-22.2 C (-8.0 F)
1962
-20.0 C (-4.0 F)
1963
-26.7 C (-16.1 F)
1964
-20.0 C (-4.0 F)
1965
-24.4 C (-11.9 F)
1966
-21.1 C (-6.0 F)
1967
-25.0 C (-13.0 F)
1968
-24.4 C (-11.9 F)
1969
-21.1 C (-6.0 F)
1970
-20.6 C (-5.1 F)
1971
-20.0 C (-4.0 F)
1972
-20.6 C (-5.1 F)
1973
-20.0 C (-4.0 F)
Wettest day (Rx1day)
The wettest day of the year at Bellefonte 4 S, 1900 to 1973. The record is 123.2 mm (4.9 in) in 1972, marked on the chart; the median year is 52.1 mm (2.0 in).
Wettest day (Rx1day) at Bellefonte 4 S by year
Year
Wettest day (Rx1day)
1900
61.0 mm (2.4 in)
1901
86.4 mm (3.4 in)
1902
61.0 mm (2.4 in)
1903
61.2 mm (2.4 in)
1904
45.7 mm (1.8 in)
1905
47.5 mm (1.9 in)
1906
77.5 mm (3.1 in)
1907
47.5 mm (1.9 in)
1908
66.5 mm (2.6 in)
1909
77.5 mm (3.1 in)
1910
47.2 mm (1.9 in)
1911
79.2 mm (3.1 in)
1912
36.1 mm (1.4 in)
1915
32.3 mm (1.3 in)
1916
48.8 mm (1.9 in)
1917
63.5 mm (2.5 in)
1918
57.9 mm (2.3 in)
1919
58.4 mm (2.3 in)
1920
64.0 mm (2.5 in)
1921
65.5 mm (2.6 in)
1922
52.8 mm (2.1 in)
1923
31.8 mm (1.3 in)
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
60.5 mm (2.4 in)
1936
50.3 mm (2.0 in)
1937
48.0 mm (1.9 in)
1938
37.6 mm (1.5 in)
1939
54.9 mm (2.2 in)
1940
55.9 mm (2.2 in)
1941
46.2 mm (1.8 in)
1942
34.3 mm (1.4 in)
1946
33.0 mm (1.3 in)
1947
39.4 mm (1.6 in)
1948
88.9 mm (3.5 in)
1949
51.1 mm (2.0 in)
1950
67.6 mm (2.7 in)
1951
53.3 mm (2.1 in)
1952
45.7 mm (1.8 in)
1953
70.6 mm (2.8 in)
1954
104.1 mm (4.1 in)
1955
78.7 mm (3.1 in)
1956
45.7 mm (1.8 in)
1957
40.6 mm (1.6 in)
1958
66.5 mm (2.6 in)
1959
51.3 mm (2.0 in)
1960
50.8 mm (2.0 in)
1961
43.7 mm (1.7 in)
1962
56.4 mm (2.2 in)
1963
43.2 mm (1.7 in)
1964
36.8 mm (1.4 in)
1965
49.0 mm (1.9 in)
1966
47.2 mm (1.9 in)
1967
74.4 mm (2.9 in)
1968
42.4 mm (1.7 in)
1969
55.1 mm (2.2 in)
1970
73.4 mm (2.9 in)
1971
35.3 mm (1.4 in)
1972
123.2 mm (4.9 in)
1973
33.0 mm (1.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Bellefonte 4 S, 1900 to 1973. The record is 226.3 mm (8.9 in) in 1972, marked on the chart; the median year is 81.9 mm (3.2 in).
Wettest five days (Rx5day) at Bellefonte 4 S by year
Year
Wettest five days (Rx5day)
1900
84.4 mm (3.3 in)
1901
119.4 mm (4.7 in)
1902
101.0 mm (4.0 in)
1903
88.6 mm (3.5 in)
1904
74.6 mm (2.9 in)
1905
103.3 mm (4.1 in)
1906
117.4 mm (4.6 in)
1907
55.8 mm (2.2 in)
1908
96.2 mm (3.8 in)
1909
103.5 mm (4.1 in)
1910
100.5 mm (4.0 in)
1911
112.0 mm (4.4 in)
1912
41.7 mm (1.6 in)
1915
44.7 mm (1.8 in)
1916
121.5 mm (4.8 in)
1917
101.6 mm (4.0 in)
1918
94.8 mm (3.7 in)
1919
113.8 mm (4.5 in)
1920
90.4 mm (3.6 in)
1921
89.9 mm (3.5 in)
1922
56.7 mm (2.2 in)
1923
32.0 mm (1.3 in)
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
71.8 mm (2.8 in)
1936
123.7 mm (4.9 in)
1937
66.1 mm (2.6 in)
1938
60.5 mm (2.4 in)
1939
69.3 mm (2.7 in)
1940
74.4 mm (2.9 in)
1941
69.9 mm (2.8 in)
1942
77.7 mm (3.1 in)
1946
42.0 mm (1.7 in)
1947
57.4 mm (2.3 in)
1948
104.4 mm (4.1 in)
1949
59.2 mm (2.3 in)
1950
89.7 mm (3.5 in)
1951
76.9 mm (3.0 in)
1952
96.6 mm (3.8 in)
1953
92.9 mm (3.7 in)
1954
109.5 mm (4.3 in)
1955
127.2 mm (5.0 in)
1956
79.4 mm (3.1 in)
1957
66.1 mm (2.6 in)
1958
91.9 mm (3.6 in)
1959
59.5 mm (2.3 in)
1960
84.8 mm (3.3 in)
1961
52.1 mm (2.1 in)
1962
69.8 mm (2.7 in)
1963
71.4 mm (2.8 in)
1964
49.8 mm (2.0 in)
1965
59.7 mm (2.4 in)
1966
77.7 mm (3.1 in)
1967
108.2 mm (4.3 in)
1968
53.8 mm (2.1 in)
1969
93.6 mm (3.7 in)
1970
126.8 mm (5.0 in)
1971
47.5 mm (1.9 in)
1972
226.3 mm (8.9 in)
1973
59.7 mm (2.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Bellefonte 4 S, 1900 to 1973. The record is 36 days in 1908, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Bellefonte 4 S by year
Year
Longest dry spell (CDD)
1900
12 days
1901
12 days
1902
15 days
1903
16 days
1904
19 days
1905
17 days
1906
9 days
1907
14 days
1908
36 days
1909
17 days
1910
21 days
1911
10 days
1912
9 days
1915
18 days
1916
13 days
1917
22 days
1918
18 days
1919
19 days
1920
17 days
1921
13 days
1922
24 days
1923
13 days
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
14 days
1936
19 days
1937
16 days
1938
13 days
1939
22 days
1940
19 days
1941
18 days
1942
19 days
1946
13 days
1947
27 days
1948
10 days
1949
19 days
1950
23 days
1951
15 days
1952
28 days
1953
20 days
1954
14 days
1955
12 days
1956
15 days
1957
14 days
1958
20 days
1959
26 days
1960
17 days
1961
17 days
1962
14 days
1963
27 days
1964
20 days
1965
23 days
1966
17 days
1967
19 days
1968
25 days
1969
15 days
1970
16 days
1971
20 days
1972
15 days
1973
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
25 years with a frost
Across 25 years with a frost, the median last spring frost at Bellefonte 4 S falls on 5 May and the median first autumn frost on 4 October, which leaves a median of 153 days between them.
Fitted over all years, the growing season changes by -4.0 days per decade at this station.
Frost dates and growing season at Bellefonte 4 S
Measure
Median, all years
Earliest period
Recent period (1902 to 1971)
Recent against earliest
Fitted trend
Last spring frost
5 May
n/a
5 May
n/a
+2.1 days per decade
First autumn frost
4 October
n/a
4 October
n/a
-1.8 days per decade
Growing days
153 days
n/a
153 days
n/a
-4.0 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
45 years, 1902 to 1972
A day with at least 53.4 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 126.1 mm (5.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Bellefonte 4 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
53.4 mm (2.1 in)
5 years
68.1 mm (2.7 in)
10 years
79.5 mm (3.1 in)
25 years
96.2 mm (3.8 in)
50 years
110.3 mm (4.3 in)
Longer than the 45 years of record
100 years
126.1 mm (5.0 in)
Longer than the 45 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, 45 years of values from 1902 to 1972.
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: 123.2 mm (4.9 in) in 1972; 104.1 mm (4.1 in) in 1954; 88.9 mm (3.5 in) in 1948.
Download the Data
Data for Bellefonte 4 S standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Bellefonte 4 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.