Rome Threshold Days by Year (USC00127547)

16 fixed thresholds counted per year at Rome (USC00127547): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rome Thresholds

Rome: days with a maximum temperature at or above 30 C (86 F) in 29 years, most in 1908 with 124.
Rome: days with a maximum temperature at or above 35 C (95 F) in 29 years, most in 1936 with 68.
Rome: days with a maximum temperature at or above 90 F (32.2 C) in 29 years, most in 1936 with 103.
Rome: days with a maximum temperature at or below 0 C (32 F) in 28 years, most in 1918 with 26.
16 fixed thresholds have at least one qualifying day at Rome.

Days at or above 30 C (86 F)

29 years with a qualifying day

Days per year at Rome with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 124 in 1908.

Days at or above 30 C (86 F) per year at Rome
Year	Days	Decade average
1905	89	100.4
1906	102	100.4
1907	92	100.4
1908	124	100.4
1909	95	100.4
1910	95	100.3
1911	110	100.3
1912	97	100.3
1913	113	100.3
1914	118	100.3
1915	85	100.3
1916	98	100.3
1917	83	100.3
1918	91	100.3
1919	113	100.3
1920	79	81.4
1922	104	81.4
1927	65	81.4
1928	72	81.4
1929	87	81.4
1930	95	102.2
1931	112	102.2
1932	100	102.2
1933	107	102.2
1934	110	102.2
1935	86	102.2
1936	119	102.2
1937	96	102.2
1938	95	102.2

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

First to last qualifying date each year at Rome
Year	First date	Last date
1905	1905-03-28	1905-10-08
1906	1906-04-12	1906-10-23
1907	1907-03-21	1907-10-03
1908	1908-04-22	1908-10-21
1909	1909-04-17	1909-10-08
1910	1910-03-23	1910-10-19
1911	1911-05-09	1911-10-06
1912	1912-04-15	1912-10-10
1913	1913-04-18	1913-10-10
1914	1914-04-17	1914-10-07
1915	1915-04-18	1915-09-26
1916	1916-05-06	1916-10-09
1917	1917-04-18	1917-09-29
1918	1918-05-08	1918-10-05
1919	1919-04-23	1919-10-27
1920	1920-05-23	1920-10-23
1922	1922-05-09	1922-10-30
1927	1927-05-09	1927-10-06
1928	1928-05-03	1928-10-16
1929	1929-03-24	1929-09-29
1930	1930-04-10	1930-10-11
1931	1931-04-14	1931-10-06
1932	1932-05-04	1932-09-19
1933	1933-05-02	1933-09-30
1934	1934-04-04	1934-10-24
1935	1935-04-24	1935-10-14
1936	1936-04-15	1936-09-26
1937	1937-04-17	1937-10-30
1938	1938-04-25	1938-10-18

Every Fixed Threshold

Fixed thresholds at Rome
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	29	124	1908	95
35 C (95 F): Days	29	68	1936	21
40 C (104 F): Days	10	18	1936	18
90 F (32.2 C): Days	29	103	1936	59
100 F (37.8 C): Days	22	35	1936	35
0 C (32 F): Ice days (max	28	26	1918	5
0 C (32 F): Frost days (min	28	116	1912	83
-10 C (14 F): Days with min	28	26	1905	7
-20 C (-4 F): Days with min	12	8	1918	7
20 C (68 F): Tropical nights (min	28	62	1936	55
25 C (77 F): Days with min	12	7	1936	1
10 mm (0.39 in): Days with 10 mm or more rain	24	56	1927	38
25 mm (0.98 in): Days with 25 mm or more rain	24	20	1915	15
50 mm (1.97 in): Days with 50 mm or more rain	18	5	1915	4
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1933	1
10 cm (3.9 in): Days with 10 cm or more snowfall	1	2	1916	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1905.

Download the Data

Data for Rome 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).

Rome Threshold Days by Year (USC00127547)

Key Facts for Rome Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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