Rathwell Threshold Days by Year (CA005022335)

15 fixed thresholds counted per year at Rathwell (CA005022335): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rathwell Thresholds

Rathwell: days with 10 mm (0.39 in) or more of precipitation in 16 years, most in 1971 with 20.
Rathwell: days with a maximum temperature at or above 30 C (86 F) in 14 years, most in 1983 with 36.
Rathwell: days with a maximum temperature at or above 90 F (32.2 C) in 14 years, most in 1980 with 17.
Rathwell: days with a maximum temperature at or below 0 C (32 F) in 14 years, most in 1972 with 140.
15 fixed thresholds have at least one qualifying day at Rathwell.

Days at or above 30 C (86 F)

14 years with a qualifying day

Days per year at Rathwell with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 36 in 1983.

Days at or above 30 C (86 F) per year at Rathwell
Year	Days	Decade average
1970	28	15.4
1971	10	15.4
1972	18	15.4
1973	9	15.4
1974	19	15.4
1975	14	15.4
1976	15	15.4
1977	13	15.4
1978	13	15.4
1979	15	15.4
1980	33	23.5
1981	16	23.5
1982	9	23.5
1983	36	23.5

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

First to last qualifying date each year at Rathwell
Year	First date	Last date
1970	1970-05-17	1970-09-19
1971	1971-06-03	1971-09-02
1972	1972-05-16	1972-08-30
1973	1973-05-17	1973-08-31
1974	1974-06-19	1974-08-07
1975	1975-06-20	1975-08-23
1976	1976-06-02	1976-09-30
1977	1977-04-30	1977-07-22
1978	1978-06-05	1978-09-10
1979	1979-06-12	1979-09-16
1980	1980-04-18	1980-09-07
1981	1981-05-20	1981-09-10
1982	1982-05-03	1982-09-10
1983	1983-06-10	1983-09-02

Every Fixed Threshold

Fixed thresholds at Rathwell
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	14	36	1983	36
35 C (95 F): Days	11	7	1980	5
90 F (32.2 C): Days	14	17	1980	15
100 F (37.8 C): Days	2	2	1983	2
0 C (32 F): Ice days (max	14	140	1972	116
0 C (32 F): Frost days (min	14	203	1983	203
-10 C (14 F): Days with min	14	133	1970	88
-20 C (-4 F): Days with min	14	81	1970	41
-30 C (-22 F): Days with min	14	27	1979	10
20 C (68 F): Tropical nights (min	7	7	1983	7
10 mm (0.39 in): Days with 10 mm or more rain	16	20	1971	10
25 mm (0.98 in): Days with 25 mm or more rain	14	5	1977	2
50 mm (1.97 in): Days with 50 mm or more rain	4	1	1968	1
10 cm (3.9 in): Days with 10 cm or more snowfall	14	7	1970	1
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1976	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1970.

Download the Data

Data for Rathwell 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).

Rathwell Threshold Days by Year (CA005022335)

Key Facts for Rathwell Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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