Norwalk Gas Plt Threshold Days by Year (USC00065893)

16 fixed thresholds counted per year at Norwalk Gas Plt (USC00065893): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Norwalk Gas Plt Thresholds

Norwalk Gas Plt: days with a maximum temperature at or above 30 C (86 F) in 25 years, most in 1980 with 54.
Norwalk Gas Plt: days with a maximum temperature at or above 90 F (32.2 C) in 25 years, most in 1980 with 28.
Norwalk Gas Plt: days with a maximum temperature at or below 0 C (32 F) in 25 years, most in 1963 with 39.
Norwalk Gas Plt: nights with a minimum temperature at or below 0 C (32 F) in 25 years, most in 1970 with 147.
16 fixed thresholds have at least one qualifying day at Norwalk Gas Plt.

Days at or above 30 C (86 F)

25 years with a qualifying day

Days per year at Norwalk Gas Plt with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 54 in 1980.

Days at or above 30 C (86 F) per year at Norwalk Gas Plt
Year	Days	Decade average
1957	30	30.7
1958	16	30.7
1959	46	30.7
1960	16	25.9
1961	32	25.9
1962	14	25.9
1963	22	25.9
1964	30	25.9
1965	37	25.9
1966	31	25.9
1967	24	25.9
1968	26	25.9
1969	27	25.9
1970	25	29.3
1971	24	29.3
1972	17	29.3
1973	32	29.3
1974	29	29.3
1975	33	29.3
1976	29	29.3
1977	40	29.3
1978	28	29.3
1979	36	29.3
1980	54	42.5
1981	31	42.5

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

First to last qualifying date each year at Norwalk Gas Plt
Year	First date	Last date
1957	1957-05-11	1957-09-14
1958	1958-07-01	1958-09-27
1959	1959-05-21	1959-09-25
1960	1960-06-27	1960-09-02
1961	1961-06-03	1961-09-13
1962	1962-05-20	1962-08-21
1963	1963-06-25	1963-08-24
1964	1964-05-09	1964-09-12
1965	1965-05-05	1965-09-24
1966	1966-06-05	1966-09-03
1967	1967-06-03	1967-10-06
1968	1968-06-07	1968-09-23
1969	1969-05-30	1969-09-08
1970	1970-06-12	1970-09-26
1971	1971-06-08	1971-09-17
1972	1972-07-12	1972-08-30
1973	1973-06-06	1973-09-05
1974	1974-04-30	1974-08-31
1975	1975-05-21	1975-08-25
1976	1976-04-17	1976-08-30
1977	1977-04-14	1977-09-06
1978	1978-06-02	1978-08-30
1979	1979-05-10	1979-10-23
1980	1980-05-26	1980-09-23
1981	1981-05-24	1981-09-15

Every Fixed Threshold

Fixed thresholds at Norwalk Gas Plt
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	25	54	1980	31
35 C (95 F): Days	18	7	1966	1
90 F (32.2 C): Days	25	28	1980	11
100 F (37.8 C): Days	4	2	1966	2
0 C (32 F): Ice days (max	25	39	1963	27
0 C (32 F): Frost days (min	25	147	1970	127
-10 C (14 F): Days with min	25	46	1970	28
-20 C (-4 F): Days with min	10	4	1957	1
20 C (68 F): Tropical nights (min	25	27	1959	7
25 C (77 F): Days with min	2	2	1972	1
10 mm (0.39 in): Days with 10 mm or more rain	23	50	1973	28
25 mm (0.98 in): Days with 25 mm or more rain	23	22	1972	12
50 mm (1.97 in): Days with 50 mm or more rain	18	7	1978	3
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1960	1
10 cm (3.9 in): Days with 10 cm or more snowfall	13	7	1967	1
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1969	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1957.

Download the Data

Data for Norwalk Gas Plt 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).

Norwalk Gas Plt Threshold Days by Year (USC00065893)

Key Facts for Norwalk Gas Plt Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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