Delta Marsh CS Threshold Days by Year (CA005040764)

14 fixed thresholds counted per year at Delta Marsh CS (CA005040764): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Delta Marsh CS Thresholds

Delta Marsh CS: days with a maximum temperature at or above 30 C (86 F) in 16 years, most in 1983 with 23.
Delta Marsh CS: days with a maximum temperature at or below 0 C (32 F) in 16 years, most in 1972 with 145.
Delta Marsh CS: nights with a minimum temperature at or below 0 C (32 F) in 16 years, most in 1979 with 215.
Delta Marsh CS: nights with a minimum temperature at or below -10 C (14 F) in 16 years, most in 1978 with 132.
14 fixed thresholds have at least one qualifying day at Delta Marsh CS.

Days at or above 30 C (86 F)

16 years with a qualifying day

Days per year at Delta Marsh CS with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 23 in 1983.

Days at or above 30 C (86 F) per year at Delta Marsh CS
Year	Days	Decade average
1968	3	5
1969	7	5
1970	14	8.5
1971	5	8.5
1972	8	8.5
1973	7	8.5
1974	7	8.5
1975	9	8.5
1976	12	8.5
1977	8	8.5
1978	10	8.5
1979	5	8.5
1980	17	13
1981	10	13
1982	2	13
1983	23	13

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

First to last qualifying date each year at Delta Marsh CS
Year	First date	Last date
1968	1968-06-03	1968-07-10
1969	1969-05-26	1969-08-25
1970	1970-05-17	1970-09-05
1971	1971-07-20	1971-08-28
1972	1972-05-16	1972-08-30
1973	1973-05-17	1973-08-31
1974	1974-06-25	1974-08-06
1975	1975-06-20	1975-07-30
1976	1976-06-02	1976-09-06
1977	1977-05-11	1977-07-22
1978	1978-05-17	1978-09-10
1979	1979-06-13	1979-07-20
1980	1980-04-21	1980-09-07
1981	1981-05-21	1981-09-10
1982	1982-07-04	1982-09-10
1983	1983-06-10	1983-09-02

Every Fixed Threshold

Fixed thresholds at Delta Marsh CS
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	16	23	1983	23
35 C (95 F): Days	5	2	1980	2
90 F (32.2 C): Days	14	8	1983	8
0 C (32 F): Ice days (max	16	145	1972	117
0 C (32 F): Frost days (min	16	215	1979	207
-10 C (14 F): Days with min	16	132	1978	106
-20 C (-4 F): Days with min	16	93	1978	52
-30 C (-22 F): Days with min	16	37	1979	13
-40 C (-40 F): Days with min	1	2	1974	2
20 C (68 F): Tropical nights (min	6	4	1983	4
10 mm (0.39 in): Days with 10 mm or more rain	16	21	1975	14
25 mm (0.98 in): Days with 25 mm or more rain	14	4	1968	2
50 mm (1.97 in): Days with 50 mm or more rain	7	1	1968	1
10 cm (3.9 in): Days with 10 cm or more snowfall	14	8	1979	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1968.

Download the Data

Data for Delta Marsh CS 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Delta Marsh CS Threshold Days by Year (CA005040764)

Key Facts for Delta Marsh CS Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related