Cidra 1 E Threshold Days by Year (RQC00662634)

11 fixed thresholds counted per year at Cidra 1 E (RQC00662634): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cidra 1 E Thresholds

Cidra 1 E: days with 10 mm (0.39 in) or more of precipitation in 60 years, most in 1903 with 105.
Cidra 1 E: days with 25 mm (0.98 in) or more of precipitation in 60 years, most in 1931 with 29.
Cidra 1 E: days with 50 mm (1.97 in) or more of precipitation in 58 years, most in 1902 with 9.
Cidra 1 E: days with a maximum temperature at or above 30 C (86 F) in 29 years, most in 1905 with 250.
11 fixed thresholds have at least one qualifying day at Cidra 1 E.

Days at or above 30 C (86 F)

29 years with a qualifying day

Days per year at Cidra 1 E with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 250 in 1905.

Days at or above 30 C (86 F) per year at Cidra 1 E
Year	Days	Decade average
1902	142	150.6
1903	47	150.6
1905	250	150.6
1907	143	150.6
1908	171	150.6
1910	95	101
1914	107	101
1925	135	85
1928	35	85
1931	120	70.7
1932	128	70.7
1933	130	70.7
1934	21	70.7
1935	9	70.7
1937	60	70.7
1938	27	70.7
1944	108	108
1950	3	24.4
1952	92	24.4
1955	6	24.4
1956	7	24.4
1957	14	24.4
1960	56	64.9
1961	54	64.9
1962	39	64.9
1963	71	64.9
1966	56	64.9
1967	84	64.9
1968	94	64.9

For each year, a bar from the first to the last day at Cidra 1 E meeting 30 C (86 F).

First to last qualifying date each year at Cidra 1 E
Year	First date	Last date
1902	1902-01-07	1902-12-24
1903	1903-01-07	1903-12-01
1905	1905-01-01	1905-11-28
1907	1907-02-11	1907-11-26
1908	1908-02-26	1908-12-15
1910	1910-02-03	1910-12-12
1914	1914-05-01	1914-12-07
1925	1925-01-06	1925-12-06
1928	1928-02-29	1928-12-15
1931	1931-01-03	1931-11-21
1932	1932-02-29	1932-11-05
1933	1933-04-01	1933-10-25
1934	1934-05-24	1934-10-17
1935	1935-08-16	1935-08-28
1937	1937-05-22	1937-11-04
1938	1938-09-11	1938-10-22
1944	1944-02-23	1944-12-21
1950	1950-07-25	1950-09-30
1952	1952-08-18	1952-12-19
1955	1955-05-12	1955-09-02
1956	1956-05-19	1956-10-19
1957	1957-05-09	1957-12-03
1960	1960-03-08	1960-11-05
1961	1961-03-10	1961-10-27
1962	1962-05-08	1962-11-14
1963	1963-01-07	1963-11-13
1966	1966-03-17	1966-10-15
1967	1967-04-28	1967-11-22
1968	1968-02-20	1968-12-16

Every Fixed Threshold

Fixed thresholds at Cidra 1 E
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	29	250	1905	94
35 C (95 F): Days	3	6	1905	1
90 F (32.2 C): Days	19	55	1902	2
100 F (37.8 C): Days	1	2	1905	2
20 C (68 F): Tropical nights (min	26	163	1902	100
25 C (77 F): Days with min	3	16	1902	1
10 mm (0.39 in): Days with 10 mm or more rain	60	105	1903	36
25 mm (0.98 in): Days with 25 mm or more rain	60	29	1931	7
50 mm (1.97 in): Days with 50 mm or more rain	58	9	1902	2
100 mm (3.94 in): Days with 100 mm or more rain	28	3	1902	1
200 mm (7.87 in): Days with 200 mm or more rain	8	2	1928	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1902.

Download the Data

Data for Cidra 1 E 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).

Cidra 1 E Threshold Days by Year (RQC00662634)

Key Facts for Cidra 1 E Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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