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Built 2026-10-19 (19 October 2026)

Ashdown 4 SSE Threshold Days by Year (USC00030286)

19 fixed thresholds counted per year at Ashdown 4 SSE (USC00030286): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ashdown 4 SSE Thresholds

  • Ashdown 4 SSE: days with 10 mm (0.39 in) or more of precipitation in 72 years, most in 1946 with 56.
  • Ashdown 4 SSE: days with 25 mm (0.98 in) or more of precipitation in 72 years, most in 1957 with 27.
  • Ashdown 4 SSE: days with 50 mm (1.97 in) or more of precipitation in 72 years, most in 2001 with 12.
  • Ashdown 4 SSE: days with a maximum temperature at or above 30 C (86 F) in 32 years, most in 2010 with 155.
  • 19 fixed thresholds have at least one qualifying day at Ashdown 4 SSE.
32 years with a qualifying day
Days at or above 30 C (86 F) per year at Ashdown 4 SSE Days per year at Ashdown 4 SSE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 155 in 2010. 0501001502001946: 1111947: 1171948: 1241949: 1261950: 851951: 1131954: 1341955: 1391956: 1431957: 1071958: 1211959: 931960: 1291961: 1091962: 1362010: 1552011: 1412012: 1262013: 1022014: 772015: 1012016: 1122017: 962018: 1342019: 1252020: 1022021: 972022: 922023: 1152024: 822025: 982026: 12219461950195619602011201520192023
Days per year at Ashdown 4 SSE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 155 in 2010.
Days at or above 30 C (86 F) per year at Ashdown 4 SSE
YearDaysDecade average
1946111119.5
1947117119.5
1948124119.5
1949126119.5
195085116.9
1951113116.9
1954134116.9
1955139116.9
1956143116.9
1957107116.9
1958121116.9
195993116.9
1960129124.7
1961109124.7
1962136124.7
2010155116.9
2011141116.9
2012126116.9
2013102116.9
201477116.9
2015101116.9
2016112116.9
201796116.9
2018134116.9
2019125116.9
2020102101.1
202197101.1
202292101.1
2023115101.1
202482101.1
202598101.1
2026122101.1
First to last qualifying date each year at Ashdown 4 SSE For each year, a bar from the first to the last day at Ashdown 4 SSE meeting 30 C (86 F). 1946: 30 March 1946 to 11 October 19461947: 5 May 1947 to 26 October 19471948: 8 April 1948 to 16 October 19481949: 7 April 1949 to 11 October 19491950: 16 May 1950 to 30 October 19501951: 19 May 1951 to 22 October 19511954: 11 March 1954 to 11 October 19541955: 10 March 1955 to 14 November 19551956: 28 April 1956 to 19 October 19561957: 11 May 1957 to 17 September 19571958: 4 April 1958 to 26 September 19581959: 30 April 1959 to 11 October 19591960: 6 April 1960 to 3 October 19601961: 25 April 1961 to 14 October 19611962: 30 April 1962 to 14 October 19622010: 10 March 2010 to 9 October 20102011: 27 March 2011 to 17 October 20112012: 2 May 2012 to 29 September 20122013: 17 April 2013 to 6 October 20132014: 5 May 2014 to 11 October 20142015: 8 April 2015 to 16 October 20152016: 16 March 2016 to 1 November 20162017: 21 March 2017 to 15 October 20172018: 8 May 2018 to 9 October 20182019: 11 April 2019 to 11 October 20192020: 27 March 2020 to 22 October 20202021: 13 April 2021 to 25 October 20212022: 9 May 2022 to 13 October 20222023: 16 April 2023 to 2 October 20232024: 8 May 2024 to 24 October 20242025: 15 May 2025 to 18 October 20252026: 22 March 2026 to 15 October 202619461950195619602011201520192023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ashdown 4 SSE meeting 30 C (86 F).
First to last qualifying date each year at Ashdown 4 SSE
YearFirst dateLast date
19461946-03-301946-10-11
19471947-05-051947-10-26
19481948-04-081948-10-16
19491949-04-071949-10-11
19501950-05-161950-10-30
19511951-05-191951-10-22
19541954-03-111954-10-11
19551955-03-101955-11-14
19561956-04-281956-10-19
19571957-05-111957-09-17
19581958-04-041958-09-26
19591959-04-301959-10-11
19601960-04-061960-10-03
19611961-04-251961-10-14
19621962-04-301962-10-14
20102010-03-102010-10-09
20112011-03-272011-10-17
20122012-05-022012-09-29
20132013-04-172013-10-06
20142014-05-052014-10-11
20152015-04-082015-10-16
20162016-03-162016-11-01
20172017-03-212017-10-15
20182018-05-082018-10-09
20192019-04-112019-10-11
20202020-03-272020-10-22
20212021-04-132021-10-25
20222022-05-092022-10-13
20232023-04-162023-10-02
20242024-05-082024-10-24
20252025-05-152025-10-18
20262026-03-222026-10-15

Every Fixed Threshold

Fixed thresholds at Ashdown 4 SSE
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days321552010122
35 C (95 F): Days3298201152
40 C (104 F): Days105120113
45 C (113 F): Days1220112
90 F (32.2 C): Days32129201093
100 F (37.8 C): Days257820119
110 F (43.3 C): Days1720117
0 C (32 F): Ice days (max191219481
0 C (32 F): Frost days (min3187194730
-10 C (14 F): Days with min21719486
-20 C (-4 F): Days with min3119511
20 C (68 F): Tropical nights (min311222018124
25 C (77 F): Days with min2017201113
10 mm (0.39 in): Days with 10 mm or more rain7256194620
25 mm (0.98 in): Days with 25 mm or more rain722719579
50 mm (1.97 in): Days with 50 mm or more rain721220013
100 mm (3.94 in): Days with 100 mm or more rain29219551
200 mm (7.87 in): Days with 200 mm or more rain1119821
10 cm (3.9 in): Days with 10 cm or more snowfall9119481

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1946.

Download the Data

  • Data for Ashdown 4 SSE 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 . Last revised (2026-10-17).