Round Grove Threshold Days by Year (USC00357354)

14 fixed thresholds counted per year at Round Grove (USC00357354): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Round Grove Thresholds

Round Grove: days with 10 mm (0.39 in) or more of precipitation in 59 years, most in 1982 with 19.
Round Grove: nights with a minimum temperature at or below 0 C (32 F) in 56 years, most in 1944 with 305.
Round Grove: nights with a minimum temperature at or below -10 C (14 F) in 56 years, most in 1944 with 85.
Round Grove: days with 10 cm (3.9 in) or more of snowfall in 56 years, most in 1967 with 11.
14 fixed thresholds have at least one qualifying day at Round Grove.

Days at or above 30 C (86 F)

53 years with a qualifying day

Days per year at Round Grove with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 48 in 1977.

Days at or above 30 C (86 F) per year at Round Grove
Year	Days	Decade average
1921	6	31
1922	39	31
1923	42	31
1924	47	31
1927	17	31
1928	35	31
1930	19	28.6
1931	43	28.6
1933	33	28.6
1934	32	28.6
1935	29	28.6
1937	9	28.6
1938	28	28.6
1939	36	28.6
1940	35	25.4
1941	19	25.4
1942	34	25.4
1943	25	25.4
1944	19	25.4
1945	33	25.4
1948	13	25.4
1951	36	24.3
1952	16	24.3
1953	25	24.3
1954	17	24.3
1955	41	24.3
1956	13	24.3
1957	9	24.3
1958	24	24.3
1959	38	24.3
1960	33	26.2
1961	45	26.2
1962	25	26.2
1963	10	26.2
1964	17	26.2
1965	10	26.2
1966	24	26.2
1967	42	26.2
1968	31	26.2
1969	25	26.2
1970	40	30.9
1971	33	30.9
1972	31	30.9
1973	29	30.9
1974	33	30.9
1975	17	30.9
1976	15	30.9
1977	48	30.9
1978	29	30.9
1979	34	30.9
1980	25	29.7
1981	46	29.7
1982	18	29.7

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

First to last qualifying date each year at Round Grove
Year	First date	Last date
1921	1921-07-08	1921-08-07
1922	1922-06-24	1922-09-19
1923	1923-06-28	1923-09-14
1924	1924-05-18	1924-09-16
1927	1927-07-19	1927-08-18
1928	1928-07-09	1928-09-05
1930	1930-07-04	1930-09-05
1931	1931-05-31	1931-09-04
1933	1933-06-12	1933-10-04
1934	1934-06-30	1934-09-06
1935	1935-07-12	1935-09-09
1937	1937-07-21	1937-09-15
1938	1938-06-24	1938-09-17
1939	1939-07-08	1939-09-09
1940	1940-06-16	1940-08-30
1941	1941-07-05	1941-08-16
1942	1942-06-30	1942-09-26
1943	1943-07-18	1943-09-30
1944	1944-07-15	1944-09-11
1945	1945-06-19	1945-09-13
1948	1948-06-28	1948-09-12
1951	1951-06-15	1951-09-21
1952	1952-07-08	1952-09-26
1953	1953-07-05	1953-09-20
1954	1954-05-18	1954-09-01
1955	1955-06-06	1955-09-10
1956	1956-06-27	1956-09-06
1957	1957-07-04	1957-09-15
1958	1958-06-21	1958-09-07
1959	1959-06-18	1959-09-12
1960	1960-07-05	1960-09-10
1961	1961-06-14	1961-08-23
1962	1962-07-20	1962-09-17
1963	1963-07-12	1963-09-28
1964	1964-07-11	1964-09-24
1965	1965-07-06	1965-08-07
1966	1966-07-22	1966-09-29
1967	1967-06-30	1967-09-28
1968	1968-06-17	1968-08-31
1969	1969-06-03	1969-09-07
1970	1970-06-02	1970-09-27
1971	1971-07-14	1971-09-12
1972	1972-06-28	1972-09-01
1973	1973-06-21	1973-09-05
1974	1974-06-11	1974-09-24
1975	1975-06-11	1975-09-06
1976	1976-06-21	1976-09-04
1977	1977-06-05	1977-09-09
1978	1978-07-13	1978-09-25
1979	1979-07-14	1979-10-05
1980	1980-07-20	1980-10-07
1981	1981-06-24	1981-09-17
1982	1982-07-26	1982-09-08

Every Fixed Threshold

Fixed thresholds at Round Grove
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	53	48	1977	18
35 C (95 F): Days	28	10	1931	7
90 F (32.2 C): Days	53	30	1924	6
100 F (37.8 C): Days	3	1	1922	1
0 C (32 F): Ice days (max	52	40	1922	18
0 C (32 F): Frost days (min	56	305	1944	219
-10 C (14 F): Days with min	56	85	1944	27
-20 C (-4 F): Days with min	45	13	1937	1
-30 C (-22 F): Days with min	6	3	1937	3
10 mm (0.39 in): Days with 10 mm or more rain	59	19	1982	8
25 mm (0.98 in): Days with 25 mm or more rain	45	5	1964	1
50 mm (1.97 in): Days with 50 mm or more rain	4	2	1964	1
10 cm (3.9 in): Days with 10 cm or more snowfall	56	11	1967	4
25 cm (9.8 in): Days with 25 cm or more snowfall	14	2	1970	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1921.

Download the Data

Data for Round Grove 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).

Round Grove Threshold Days by Year (USC00357354)

Key Facts for Round Grove Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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