Bellefonte 4 S Threshold Days by Year (USC00360530)

17 fixed thresholds counted per year at Bellefonte 4 S (USC00360530): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bellefonte 4 S Thresholds

Bellefonte 4 S: days with 10 mm (0.39 in) or more of precipitation in 45 years, most in 1911 with 50.
Bellefonte 4 S: days with 25 mm (0.98 in) or more of precipitation in 45 years, most in 1902 with 16.
Bellefonte 4 S: days with a maximum temperature at or above 30 C (86 F) in 31 years, most in 1911 with 92.
Bellefonte 4 S: days with a maximum temperature at or above 90 F (32.2 C) in 31 years, most in 1911 with 61.
17 fixed thresholds have at least one qualifying day at Bellefonte 4 S.

Days at or above 30 C (86 F)

31 years with a qualifying day

Days per year at Bellefonte 4 S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 92 in 1911.

Days at or above 30 C (86 F) per year at Bellefonte 4 S
Year	Days	Decade average
1902	37	43.7
1903	35	43.7
1904	29	43.7
1905	34	43.7
1907	56	43.7
1909	71	43.7
1910	79	85.5
1911	92	85.5
1947	21	30.7
1948	28	30.7
1949	43	30.7
1950	11	34
1951	28	34
1952	53	34
1953	47	34
1955	49	34
1956	18	34
1957	38	34
1958	12	34
1959	50	34
1960	15	31.3
1961	30	31.3
1962	37	31.3
1963	24	31.3
1964	41	31.3
1965	42	31.3
1966	51	31.3
1967	10	31.3
1970	23	18.7
1971	20	18.7
1972	13	18.7

For each year, a bar from the first to the last day at Bellefonte 4 S meeting 30 C (86 F).

First to last qualifying date each year at Bellefonte 4 S
Year	First date	Last date
1902	1902-04-22	1902-09-09
1903	1903-04-30	1903-09-16
1904	1904-05-02	1904-09-02
1905	1905-05-04	1905-09-30
1907	1907-05-14	1907-09-16
1909	1909-05-06	1909-09-23
1910	1910-04-05	1910-10-20
1911	1911-05-19	1911-09-25
1947	1947-06-11	1947-09-14
1948	1948-05-12	1948-09-14
1949	1949-05-06	1949-08-29
1950	1950-06-08	1950-08-29
1951	1951-05-16	1951-10-06
1952	1952-05-29	1952-09-15
1953	1953-05-11	1953-10-01
1955	1955-05-05	1955-09-19
1956	1956-06-09	1956-09-02
1957	1957-04-28	1957-09-13
1958	1958-07-01	1958-09-01
1959	1959-05-21	1959-09-30
1960	1960-04-15	1960-09-09
1961	1961-06-07	1961-09-26
1962	1962-04-27	1962-09-03
1963	1963-05-10	1963-07-29
1964	1964-05-20	1964-09-19
1965	1965-05-03	1965-09-23
1966	1966-06-06	1966-09-04
1967	1967-06-09	1967-07-10
1970	1970-05-23	1970-09-25
1971	1971-05-19	1971-09-11
1972	1972-05-25	1972-09-18

Every Fixed Threshold

Fixed thresholds at Bellefonte 4 S
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	31	92	1911	13
35 C (95 F): Days	18	22	1911	7
40 C (104 F): Days	1	3	1911	3
90 F (32.2 C): Days	31	61	1911	7
100 F (37.8 C): Days	3	9	1911	2
0 C (32 F): Ice days (max	31	50	1963	36
0 C (32 F): Frost days (min	30	161	1904	145
-10 C (14 F): Days with min	30	49	1963	35
-20 C (-4 F): Days with min	22	9	1963	2
20 C (68 F): Tropical nights (min	26	18	1949	6
25 C (77 F): Days with min	3	1	1905	1
10 mm (0.39 in): Days with 10 mm or more rain	45	50	1911	32
25 mm (0.98 in): Days with 25 mm or more rain	45	16	1902	7
50 mm (1.97 in): Days with 50 mm or more rain	27	3	1902	2
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1972	1
10 cm (3.9 in): Days with 10 cm or more snowfall	23	6	1916	5
25 cm (9.8 in): Days with 25 cm or more snowfall	12	1	1918	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1902.

Download the Data

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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Bellefonte 4 S Threshold Days by Year (USC00360530)

Key Facts for Bellefonte 4 S Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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