Ashton Threshold Days by Year (USC00250385)

16 fixed thresholds counted per year at Ashton (USC00250385): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ashton Thresholds

Ashton: days with 10 mm (0.39 in) or more of precipitation in 18 years, most in 1905 with 27.
Ashton: days with 25 mm (0.98 in) or more of precipitation in 18 years, most in 1905 with 14.
Ashton: days with 50 mm (1.97 in) or more of precipitation in 12 years, most in 1905 with 4.
Ashton: days with a maximum temperature at or above 30 C (86 F) in 6 years, most in 1900 with 81.
16 fixed thresholds have at least one qualifying day at Ashton.

Days at or above 30 C (86 F)

6 years with a qualifying day

Days per year at Ashton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 81 in 1900.

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

First to last qualifying date each year at Ashton
Year	First date	Last date
1896	1896-04-27	1896-10-01
1897	1897-05-19	1897-10-07
1898	1898-05-23	1898-09-27
1899	1899-04-12	1899-10-21
1900	1900-05-11	1900-10-05
1901	1901-04-26	1901-09-24

Every Fixed Threshold

Fixed thresholds at Ashton
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	6	81	1900	81
35 C (95 F): Days	6	34	1901	34
40 C (104 F): Days	3	2	1899	2
90 F (32.2 C): Days	6	60	1900	59
100 F (37.8 C): Days	6	20	1901	20
0 C (32 F): Ice days (max	6	52	1899	39
0 C (32 F): Frost days (min	6	155	1898	128
-10 C (14 F): Days with min	6	70	1899	50
-20 C (-4 F): Days with min	6	23	1899	11
-30 C (-22 F): Days with min	2	5	1899	1
20 C (68 F): Tropical nights (min	6	40	1901	40
25 C (77 F): Days with min	4	3	1901	3
10 mm (0.39 in): Days with 10 mm or more rain	18	27	1905	20
25 mm (0.98 in): Days with 25 mm or more rain	18	14	1905	5
50 mm (1.97 in): Days with 50 mm or more rain	12	4	1905	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1905	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1896.

Download the Data

Data for Ashton 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).

Ashton Threshold Days by Year (USC00250385)

Key Facts for Ashton Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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