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Built 2026-10-19 (19 October 2026)

St Albans Radio Threshold Days by Year (USC00437032)

15 fixed thresholds counted per year at St Albans Radio (USC00437032): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for St Albans Radio Thresholds

  • St Albans Radio: days with a maximum temperature at or above 30 C (86 F) in 29 years, most in 2005 with 27.
  • St Albans Radio: days with a maximum temperature at or below 0 C (32 F) in 29 years, most in 1978 with 101.
  • St Albans Radio: nights with a minimum temperature at or below 0 C (32 F) in 28 years, most in 1978 with 178.
  • St Albans Radio: nights with a minimum temperature at or below -10 C (14 F) in 28 years, most in 1989 with 91.
  • 15 fixed thresholds have at least one qualifying day at St Albans Radio.
29 years with a qualifying day
Days at or above 30 C (86 F) per year at St Albans Radio Days per year at St Albans Radio with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 27 in 2005. 01020301978: 91979: 91980: 31981: 51982: 111983: 131984: 61985: 31986: 41987: 141988: 231989: 101990: 51991: 191992: 41993: 101994: 91995: 221996: 21997: 51998: 51999: 142000: 12001: 162005: 272006: 132007: 142008: 72009: 81978198119841987199019931996199920052008
Days per year at St Albans Radio with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 27 in 2005.
Days at or above 30 C (86 F) per year at St Albans Radio
YearDaysDecade average
197899
197999
198039.2
198159.2
1982119.2
1983139.2
198469.2
198539.2
198649.2
1987149.2
1988239.2
1989109.2
199059.5
1991199.5
199249.5
1993109.5
199499.5
1995229.5
199629.5
199759.5
199859.5
1999149.5
2000112.3
20011612.3
20052712.3
20061312.3
20071412.3
2008712.3
2009812.3
First to last qualifying date each year at St Albans Radio For each year, a bar from the first to the last day at St Albans Radio meeting 30 C (86 F). 1978: 28 May 1978 to 16 August 19781979: 9 May 1979 to 25 July 19791980: 24 June 1980 to 8 August 19801981: 16 June 1981 to 9 July 19811982: 7 July 1982 to 13 September 19821983: 13 June 1983 to 5 September 19831984: 8 June 1984 to 14 August 19841985: 25 July 1985 to 14 August 19851986: 7 July 1986 to 25 July 19861987: 30 May 1987 to 17 August 19871988: 12 June 1988 to 13 August 19881989: 22 June 1989 to 10 September 19891990: 27 April 1990 to 4 August 19901991: 16 May 1991 to 30 August 19911992: 22 May 1992 to 26 August 19921993: 25 June 1993 to 27 August 19931994: 22 May 1994 to 22 July 19941995: 18 June 1995 to 21 August 19951996: 6 August 1996 to 7 August 19961997: 11 June 1997 to 17 August 19971998: 22 June 1998 to 17 July 19981999: 31 May 1999 to 5 September 19992000: 27 June 2000 to 27 June 20002001: 14 June 2001 to 11 August 20012005: 3 June 2005 to 15 September 20052006: 19 June 2006 to 3 August 20062007: 11 May 2007 to 8 September 20072008: 8 June 2008 to 6 September 20082009: 28 April 2009 to 19 August 200919781982198619901994199820052009JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at St Albans Radio meeting 30 C (86 F).
First to last qualifying date each year at St Albans Radio
YearFirst dateLast date
19781978-05-281978-08-16
19791979-05-091979-07-25
19801980-06-241980-08-08
19811981-06-161981-07-09
19821982-07-071982-09-13
19831983-06-131983-09-05
19841984-06-081984-08-14
19851985-07-251985-08-14
19861986-07-071986-07-25
19871987-05-301987-08-17
19881988-06-121988-08-13
19891989-06-221989-09-10
19901990-04-271990-08-04
19911991-05-161991-08-30
19921992-05-221992-08-26
19931993-06-251993-08-27
19941994-05-221994-07-22
19951995-06-181995-08-21
19961996-08-061996-08-07
19971997-06-111997-08-17
19981998-06-221998-07-17
19991999-05-311999-09-05
20002000-06-272000-06-27
20012001-06-142001-08-11
20052005-06-032005-09-15
20062006-06-192006-08-03
20072007-05-112007-09-08
20082008-06-082008-09-06
20092009-04-282009-08-19

Every Fixed Threshold

Fixed thresholds at St Albans Radio
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days292720058
35 C (95 F): Days4220052
90 F (32.2 C): Days181119881
0 C (32 F): Ice days (max29101197871
0 C (32 F): Frost days (min281781978157
-10 C (14 F): Days with min2891198967
-20 C (-4 F): Days with min2731199310
-30 C (-22 F): Days with min7519942
20 C (68 F): Tropical nights (min282119996
10 mm (0.39 in): Days with 10 mm or more rain2845198331
25 mm (0.98 in): Days with 25 mm or more rain281019965
50 mm (1.97 in): Days with 50 mm or more rain11319841
10 cm (3.9 in): Days with 10 cm or more snowfall281020005
25 cm (9.8 in): Days with 25 cm or more snowfall14519942
50 cm (19.7 in): Days with 50 cm or more snowfall1120011

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1978.

Download the Data

  • Data for St Albans Radio 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 (2025-12-31).