Stonewall Threshold Days by Year (CA005022788)

17 fixed thresholds counted per year at Stonewall (CA005022788): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Stonewall Thresholds

Stonewall: days with a maximum temperature at or above 30 C (86 F) in 21 years, most in 1961 with 28.
Stonewall: days with a maximum temperature at or above 90 F (32.2 C) in 21 years, most in 1970 with 13.
Stonewall: days with a maximum temperature at or below 0 C (32 F) in 21 years, most in 1965 with 140.
Stonewall: days with 10 mm (0.39 in) or more of precipitation in 21 years, most in 1977 with 24.
17 fixed thresholds have at least one qualifying day at Stonewall.

Days at or above 30 C (86 F)

21 years with a qualifying day

Days per year at Stonewall with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 28 in 1961.

Days at or above 30 C (86 F) per year at Stonewall
Year	Days	Decade average
1960	19	13.3
1961	28	13.3
1963	19	13.3
1964	7	13.3
1965	4	13.3
1966	13	13.3
1967	16	13.3
1968	2	13.3
1969	12	13.3
1970	24	16.5
1971	10	16.5
1972	22	16.5
1974	21	16.5
1975	19	16.5
1977	10	16.5
1978	14	16.5
1979	12	16.5
1980	25	16.8
1981	12	16.8
1982	5	16.8
1983	25	16.8

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

First to last qualifying date each year at Stonewall
Year	First date	Last date
1960	1960-05-12	1960-08-21
1961	1961-05-21	1961-08-31
1963	1963-05-30	1963-09-09
1964	1964-05-21	1964-08-05
1965	1965-08-04	1965-08-13
1966	1966-06-18	1966-08-27
1967	1967-06-03	1967-09-06
1968	1968-06-03	1968-07-06
1969	1969-05-26	1969-09-13
1970	1970-05-17	1970-09-19
1971	1971-06-03	1971-09-02
1972	1972-05-15	1972-08-30
1974	1974-06-19	1974-08-07
1975	1975-06-20	1975-07-30
1977	1977-05-10	1977-07-23
1978	1978-05-23	1978-09-10
1979	1979-06-13	1979-09-16
1980	1980-04-18	1980-09-07
1981	1981-05-20	1981-09-10
1982	1982-05-28	1982-09-10
1983	1983-06-10	1983-09-02

Every Fixed Threshold

Fixed thresholds at Stonewall
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	21	28	1961	25
35 C (95 F): Days	11	4	1961	2
90 F (32.2 C): Days	21	13	1970	12
100 F (37.8 C): Days	4	2	1980	2
0 C (32 F): Ice days (max	21	140	1965	116
0 C (32 F): Frost days (min	20	212	1974	207
-10 C (14 F): Days with min	20	133	1966	94
-20 C (-4 F): Days with min	20	91	1972	42
-30 C (-22 F): Days with min	20	32	1966	13
-40 C (-40 F): Days with min	4	7	1966	1
20 C (68 F): Tropical nights (min	6	4	1983	4
10 mm (0.39 in): Days with 10 mm or more rain	21	24	1977	12
25 mm (0.98 in): Days with 25 mm or more rain	21	5	1964	1
50 mm (1.97 in): Days with 50 mm or more rain	3	2	1968	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1968	1
10 cm (3.9 in): Days with 10 cm or more snowfall	17	7	1965	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	2	1966	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1960.

Download the Data

Data for Stonewall 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Stonewall Threshold Days by Year (CA005022788)

Key Facts for Stonewall Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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