Ervay Threshold Days by Year (USC00483060)

17 fixed thresholds counted per year at Ervay (USC00483060): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ervay Thresholds

Ervay: days with a maximum temperature at or above 30 C (86 F) in 32 years, most in 1940 with 35.
Ervay: days with a maximum temperature at or below 0 C (32 F) in 32 years, most in 1924 with 82.
Ervay: nights with a minimum temperature at or below 0 C (32 F) in 29 years, most in 1916 with 233.
Ervay: nights with a minimum temperature at or below -10 C (14 F) in 29 years, most in 1916 with 92.
17 fixed thresholds have at least one qualifying day at Ervay.

Days at or above 30 C (86 F)

32 years with a qualifying day

Days per year at Ervay with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 35 in 1940.

Days at or above 30 C (86 F) per year at Ervay
Year	Days	Decade average
1909	5	5
1910	24	16.2
1912	5	16.2
1913	21	16.2
1914	8	16.2
1915	8	16.2
1916	22	16.2
1917	15	16.2
1918	10	16.2
1919	33	16.2
1920	13	13.4
1921	7	13.4
1922	12	13.4
1923	5	13.4
1924	9	13.4
1925	22	13.4
1926	20	13.4
1927	15	13.4
1928	15	13.4
1929	16	13.4
1931	25	24.6
1932	26	24.6
1933	28	24.6
1934	26	24.6
1935	24	24.6
1936	34	24.6
1937	15	24.6
1938	17	24.6
1939	26	24.6
1940	35	19
1941	5	19
1942	17	19

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

First to last qualifying date each year at Ervay
Year	First date	Last date
1909	1909-06-18	1909-08-15
1910	1910-06-19	1910-08-27
1912	1912-07-25	1912-08-26
1913	1913-07-06	1913-09-05
1914	1914-06-24	1914-08-15
1915	1915-07-12	1915-09-01
1916	1916-06-27	1916-09-02
1917	1917-07-07	1917-07-27
1918	1918-06-10	1918-08-04
1919	1919-06-20	1919-08-31
1920	1920-07-19	1920-08-24
1921	1921-06-27	1921-07-26
1922	1922-06-20	1922-08-16
1923	1923-07-18	1923-08-13
1924	1924-06-15	1924-08-28
1925	1925-06-20	1925-09-07
1926	1926-06-26	1926-08-30
1927	1927-06-23	1927-09-03
1928	1928-07-05	1928-08-22
1929	1929-06-29	1929-08-26
1931	1931-06-16	1931-09-13
1932	1932-06-22	1932-08-23
1933	1933-06-17	1933-08-14
1934	1934-07-01	1934-08-28
1935	1935-07-05	1935-08-21
1936	1936-06-14	1936-08-23
1937	1937-06-22	1937-08-27
1938	1938-07-09	1938-08-24
1939	1939-07-08	1939-08-26
1940	1940-06-13	1940-09-02
1941	1941-07-22	1941-08-09
1942	1942-05-26	1942-08-24

Every Fixed Threshold

Fixed thresholds at Ervay
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	32	35	1940	17
35 C (95 F): Days	3	5	1925	1
90 F (32.2 C): Days	28	12	1934	2
100 F (37.8 C): Days	1	1	1925	1
0 C (32 F): Ice days (max	32	82	1924	58
0 C (32 F): Frost days (min	29	233	1916	189
-10 C (14 F): Days with min	29	92	1916	51
-20 C (-4 F): Days with min	29	26	1916	10
-30 C (-22 F): Days with min	19	7	1916	1
20 C (68 F): Tropical nights (min	2	1	1919	1
10 mm (0.39 in): Days with 10 mm or more rain	15	21	1915	13
25 mm (0.98 in): Days with 25 mm or more rain	13	6	1942	6
50 mm (1.97 in): Days with 50 mm or more rain	3	2	1915	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1937	1
10 cm (3.9 in): Days with 10 cm or more snowfall	9	14	1942	14
25 cm (9.8 in): Days with 25 cm or more snowfall	4	3	1919	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1933	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1909.

Download the Data

Data for Ervay 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).

Ervay Threshold Days by Year (USC00483060)

Key Facts for Ervay Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related