Speculator Threshold Days by Year (USC00308080)

14 fixed thresholds counted per year at Speculator (USC00308080): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Speculator Thresholds

Speculator: days with 10 mm (0.39 in) or more of precipitation in 28 years, most in 1976 with 55.
Speculator: days with 25 mm (0.98 in) or more of precipitation in 28 years, most in 1961 with 15.
Speculator: days with 10 cm (3.9 in) or more of snowfall in 26 years, most in 1976 with 19.
Speculator: days with a maximum temperature at or below 0 C (32 F) in 25 years, most in 1976 with 80.
14 fixed thresholds have at least one qualifying day at Speculator.

Days at or above 30 C (86 F)

24 years with a qualifying day

Days per year at Speculator with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 25 in 1955.

Days at or above 30 C (86 F) per year at Speculator
Year	Days	Decade average
1948	20	21.5
1949	23	21.5
1952	12	11.7
1953	16	11.7
1954	1	11.7
1955	25	11.7
1957	7	11.7
1959	9	11.7
1961	4	8
1962	4	8
1963	15	8
1964	12	8
1965	7	8
1966	10	8
1967	4	8
1968	8	8
1970	3	5.4
1971	3	5.4
1972	3	5.4
1973	12	5.4
1974	5	5.4
1975	9	5.4
1976	3	5.4
1999	20	20

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

First to last qualifying date each year at Speculator
Year	First date	Last date
1948	1948-06-04	1948-09-14
1949	1949-05-06	1949-08-28
1952	1952-06-17	1952-08-28
1953	1953-06-19	1953-09-04
1954	1954-06-22	1954-06-22
1955	1955-06-18	1955-08-22
1957	1957-06-15	1957-07-21
1959	1959-06-10	1959-09-09
1961	1961-06-13	1961-09-04
1962	1962-05-17	1962-07-08
1963	1963-06-24	1963-07-29
1964	1964-05-23	1964-09-04
1965	1965-05-26	1965-09-06
1966	1966-06-23	1966-08-07
1967	1967-06-11	1967-07-10
1968	1968-06-06	1968-07-18
1970	1970-07-27	1970-08-15
1971	1971-05-19	1971-06-30
1972	1972-07-12	1972-07-20
1973	1973-06-11	1973-09-05
1974	1974-06-10	1974-07-14
1975	1975-05-20	1975-08-04
1976	1976-08-21	1976-08-23
1999	1999-05-31	1999-09-05

Every Fixed Threshold

Fixed thresholds at Speculator
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	24	25	1955	20
35 C (95 F): Days	2	2	1948	1
90 F (32.2 C): Days	12	9	1948	6
0 C (32 F): Ice days (max	25	80	1976	49
0 C (32 F): Frost days (min	24	227	1954	189
-10 C (14 F): Days with min	24	103	1954	71
-20 C (-4 F): Days with min	24	37	1955	24
-30 C (-22 F): Days with min	22	8	1955	1
20 C (68 F): Tropical nights (min	5	3	1999	3
10 mm (0.39 in): Days with 10 mm or more rain	28	55	1976	35
25 mm (0.98 in): Days with 25 mm or more rain	28	15	1961	11
50 mm (1.97 in): Days with 50 mm or more rain	16	5	1955	2
10 cm (3.9 in): Days with 10 cm or more snowfall	26	19	1976	10
25 cm (9.8 in): Days with 25 cm or more snowfall	14	5	1971	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1948.

Download the Data

Data for Speculator 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).

Speculator Threshold Days by Year (USC00308080)

Key Facts for Speculator Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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