Grasmere Threshold Days by Year (CA001153282)

15 fixed thresholds counted per year at Grasmere (CA001153282): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grasmere Thresholds

Grasmere: days with a maximum temperature at or above 30 C (86 F) in 21 years, most in 1967 with 55.
Grasmere: days with a maximum temperature at or above 90 F (32.2 C) in 21 years, most in 1967 with 38.
Grasmere: days with a maximum temperature at or below 0 C (32 F) in 21 years, most in 1978 with 80.
Grasmere: nights with a minimum temperature at or below 0 C (32 F) in 21 years, most in 1982 with 187.
15 fixed thresholds have at least one qualifying day at Grasmere.

Days at or above 30 C (86 F)

21 years with a qualifying day

Days per year at Grasmere with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 55 in 1967.

Days at or above 30 C (86 F) per year at Grasmere
Year	Days	Decade average
1962	22	27.6
1963	29	27.6
1964	12	27.6
1965	24	27.6
1966	26	27.6
1967	55	27.6
1968	15	27.6
1969	38	27.6
1970	47	31.8
1971	38	31.8
1973	48	31.8
1974	30	31.8
1975	21	31.8
1976	8	31.8
1977	31	31.8
1978	19	31.8
1979	44	31.8
1980	12	22.8
1981	32	22.8
1982	22	22.8
1983	25	22.8

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

First to last qualifying date each year at Grasmere
Year	First date	Last date
1962	1962-06-15	1962-09-22
1963	1963-06-14	1963-09-09
1964	1964-07-06	1964-07-28
1965	1965-06-10	1965-08-19
1966	1966-05-26	1966-09-06
1967	1967-06-17	1967-09-28
1968	1968-07-03	1968-08-03
1969	1969-06-02	1969-09-12
1970	1970-05-20	1970-08-31
1971	1971-07-14	1971-08-28
1973	1973-05-15	1973-09-09
1974	1974-06-12	1974-08-24
1975	1975-07-01	1975-08-06
1976	1976-07-05	1976-09-02
1977	1977-04-23	1977-08-21
1978	1978-06-28	1978-08-09
1979	1979-05-23	1979-09-22
1980	1980-07-07	1980-07-29
1981	1981-07-03	1981-09-18
1982	1982-06-21	1982-09-03
1983	1983-05-26	1983-09-06

Every Fixed Threshold

Fixed thresholds at Grasmere
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	21	55	1967	25
35 C (95 F): Days	19	27	1973	3
90 F (32.2 C): Days	21	38	1967	8
100 F (37.8 C): Days	3	2	1975	1
0 C (32 F): Ice days (max	21	80	1978	41
0 C (32 F): Frost days (min	21	187	1982	151
-10 C (14 F): Days with min	21	50	1969	33
-20 C (-4 F): Days with min	21	21	1979	12
-30 C (-22 F): Days with min	11	9	1979	4
-40 C (-40 F): Days with min	1	1	1968	1
20 C (68 F): Tropical nights (min	1	1	1980	1
10 mm (0.39 in): Days with 10 mm or more rain	17	24	1975	18
25 mm (0.98 in): Days with 25 mm or more rain	13	4	1969	3
10 cm (3.9 in): Days with 10 cm or more snowfall	19	6	1975	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	2	1964	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1962.

Download the Data

Data for Grasmere 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).

Grasmere Threshold Days by Year (CA001153282)

Key Facts for Grasmere Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related