Gray Threshold Days by Year

16 fixed thresholds counted per year at Gray (USC00103825): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Gray Thresholds

Gray: days with 10 mm (0.39 in) or more of precipitation in 28 years, most in 1930 with 24.
Gray: days with a maximum temperature at or below 0 C (32 F) in 26 years, most in 1948 with 95.
Gray: nights with a minimum temperature at or below 0 C (32 F) in 26 years, most in 1899 with 254.
Gray: nights with a minimum temperature at or below -10 C (14 F) in 26 years, most in 1948 with 122.
16 fixed thresholds have at least one qualifying day at Gray.

Days at or above 30 C (86 F)

25 years with a qualifying day

Days per year at Gray with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 35 in 1925.

Days at or above 30 C (86 F) per year at Gray
Year	Days	Decade average
1899	20	20
1925	35	16.8
1926	22	16.8
1927	5	16.8
1928	5	16.8
1930	12	16.6
1932	11	16.6
1933	25	16.6
1934	26	16.6
1935	17	16.6
1936	23	16.6
1938	1	16.6
1939	18	16.6
1940	29	11.3
1941	9	11.3
1943	15	11.3
1945	2	11.3
1946	4	11.3
1947	7	11.3
1948	13	11.3
1950	13	18.4
1951	9	18.4
1952	14	18.4
1953	21	18.4
1954	35	18.4

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

First to last qualifying date each year at Gray
Year	First date	Last date
1899	1899-06-18	1899-09-19
1925	1925-06-19	1925-08-19
1926	1926-06-07	1926-08-21
1927	1927-06-25	1927-07-21
1928	1928-07-26	1928-08-10
1930	1930-05-29	1930-07-31
1932	1932-07-27	1932-08-20
1933	1933-06-13	1933-08-17
1934	1934-07-02	1934-08-27
1935	1935-07-05	1935-08-22
1936	1936-06-21	1936-08-06
1938	1938-07-30	1938-07-30
1939	1939-07-09	1939-08-25
1940	1940-06-17	1940-08-31
1941	1941-07-05	1941-08-09
1943	1943-07-20	1943-08-26
1945	1945-07-25	1945-07-29
1946	1946-07-20	1946-08-20
1947	1947-07-19	1947-09-02
1948	1948-07-10	1948-09-13
1950	1950-07-19	1950-09-06
1951	1951-07-14	1951-07-29
1952	1952-07-09	1952-09-07
1953	1953-07-07	1953-08-14
1954	1954-06-22	1954-08-31

Every Fixed Threshold

Fixed thresholds at Gray
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	25	35	1925	35
35 C (95 F): Days	9	16	1925	7
90 F (32.2 C): Days	20	26	1925	24
100 F (37.8 C): Days	1	6	1925	6
0 C (32 F): Ice days (max	26	95	1948	17
0 C (32 F): Frost days (min	26	254	1899	231
-10 C (14 F): Days with min	26	122	1948	102
-20 C (-4 F): Days with min	26	64	1948	20
-30 C (-22 F): Days with min	13	5	1932	1
-40 C (-40 F): Days with min	1	1	1930	1
20 C (68 F): Tropical nights (min	1	2	1926	2
10 mm (0.39 in): Days with 10 mm or more rain	28	24	1930	8
25 mm (0.98 in): Days with 25 mm or more rain	12	2	1944	1
50 mm (1.97 in): Days with 50 mm or more rain	3	1	1936	1
10 cm (3.9 in): Days with 10 cm or more snowfall	13	14	1933	10
25 cm (9.8 in): Days with 25 cm or more snowfall	6	3	1943	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1899.

Download the Data

Data for Gray 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). Threshold counts are computed by this site.

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

Gray Threshold Days by Year

Key Facts for Gray Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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