Frederick Wfmd Threshold Days by Year (USW00013730)

16 fixed thresholds counted per year at Frederick Wfmd (USW00013730): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Frederick Wfmd Thresholds

Frederick Wfmd: days with a maximum temperature at or above 30 C (86 F) in 19 years, most in 1949 with 76.
Frederick Wfmd: days with a maximum temperature at or above 90 F (32.2 C) in 19 years, most in 1966 with 42.
Frederick Wfmd: days with a maximum temperature at or below 0 C (32 F) in 19 years, most in 1958 with 32.
Frederick Wfmd: nights with a minimum temperature at or below 0 C (32 F) in 19 years, most in 1962 with 136.
16 fixed thresholds have at least one qualifying day at Frederick Wfmd.

Days at or above 30 C (86 F)

19 years with a qualifying day

Days per year at Frederick Wfmd with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 76 in 1949.

Days at or above 30 C (86 F) per year at Frederick Wfmd
Year	Days	Decade average
1948	42	59
1949	76	59
1950	52	59.7
1951	74	59.7
1952	59	59.7
1953	65	59.7
1954	55	59.7
1955	57	59.7
1956	46	59.7
1957	73	59.7
1958	42	59.7
1959	74	59.7
1960	41	56.7
1961	55	56.7
1962	51	56.7
1964	73	56.7
1966	66	56.7
1968	54	56.7
2025	62	62

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

First to last qualifying date each year at Frederick Wfmd
Year	First date	Last date
1948	1948-03-21	1948-09-20
1949	1949-05-04	1949-10-12
1950	1950-06-07	1950-09-03
1951	1951-05-16	1951-10-06
1952	1952-06-04	1952-09-14
1953	1953-05-11	1953-09-30
1954	1954-05-02	1954-10-13
1955	1955-05-05	1955-09-20
1956	1956-04-28	1956-09-23
1957	1957-04-21	1957-09-22
1958	1958-05-31	1958-10-10
1959	1959-04-09	1959-10-06
1960	1960-04-14	1960-09-09
1961	1961-06-02	1961-09-25
1962	1962-04-26	1962-10-12
1964	1964-04-18	1964-09-23
1966	1966-06-04	1966-09-05
1968	1968-06-06	1968-10-01
2025	2025-05-16	2025-09-19

Every Fixed Threshold

Fixed thresholds at Frederick Wfmd
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	19	76	1949	62
35 C (95 F): Days	16	16	1953	12
90 F (32.2 C): Days	19	42	1966	30
100 F (37.8 C): Days	7	4	1953	1
0 C (32 F): Ice days (max	19	32	1958	19
0 C (32 F): Frost days (min	19	136	1962	92
-10 C (14 F): Days with min	18	27	1958	7
-20 C (-4 F): Days with min	6	4	1961	1
20 C (68 F): Tropical nights (min	19	51	1949	51
25 C (77 F): Days with min	4	4	2025	4
10 mm (0.39 in): Days with 10 mm or more rain	18	54	1948	30
25 mm (0.98 in): Days with 25 mm or more rain	18	15	1952	9
50 mm (1.97 in): Days with 50 mm or more rain	12	4	1952	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1952	1
10 cm (3.9 in): Days with 10 cm or more snowfall	14	5	1961	3
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1958	1

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 Frederick Wfmd 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).

Frederick Wfmd Threshold Days by Year (USW00013730)

Key Facts for Frederick Wfmd Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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