Shell Threshold Days by Year

17 fixed thresholds counted per year at Shell (USC00488124): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Shell Thresholds

Shell: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1973 with 15.
Shell: days with a maximum temperature at or above 30 C (86 F) in 40 years, most in 2001 with 89.
Shell: days with a maximum temperature at or above 35 C (95 F) in 40 years, most in 2007 with 29.
Shell: days with a maximum temperature at or above 90 F (32.2 C) in 40 years, most in 2001 with 75.
17 fixed thresholds have at least one qualifying day at Shell.

Days at or above 30 C (86 F)

40 years with a qualifying day

Days per year at Shell with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 89 in 2001.

Days at or above 30 C (86 F) per year at Shell
Year	Days	Decade average
1973	60	64.5
1974	69	64.5
1981	70	65.4
1982	58	65.4
1983	60	65.4
1984	78	65.4
1986	72	65.4
1987	45	65.4
1988	84	65.4
1989	56	65.4
1990	64	50.7
1991	59	50.7
1992	34	50.7
1993	22	50.7
1994	62	50.7
1995	50	50.7
1996	57	50.7
1997	51	50.7
1998	56	50.7
1999	52	50.7
2000	71	69.3
2001	89	69.3
2002	76	69.3
2007	75	69.3
2008	56	69.3
2009	49	69.3
2010	45	61
2011	66	61
2012	74	61
2013	77	61
2014	46	61
2015	64	61
2019	55	61
2020	73	65.9
2021	74	65.9
2022	72	65.9
2023	51	65.9
2024	67	65.9
2025	67	65.9
2026	57	65.9

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

First to last qualifying date each year at Shell
Year	First date	Last date
1973	1973-05-31	1973-10-01
1974	1974-04-24	1974-09-27
1981	1981-06-06	1981-09-21
1982	1982-06-21	1982-09-02
1983	1983-06-24	1983-09-09
1984	1984-06-21	1984-09-20
1986	1986-05-28	1986-09-01
1987	1987-04-29	1987-09-25
1988	1988-05-13	1988-09-09
1989	1989-04-21	1989-09-29
1990	1990-06-10	1990-09-12
1991	1991-06-10	1991-09-07
1992	1992-05-06	1992-10-03
1993	1993-06-20	1993-09-11
1994	1994-06-06	1994-09-29
1995	1995-06-12	1995-09-04
1996	1996-06-07	1996-09-10
1997	1997-05-31	1997-09-14
1998	1998-06-30	1998-09-17
1999	1999-06-19	1999-09-16
2000	2000-05-01	2000-09-16
2001	2001-05-12	2001-10-01
2002	2002-05-20	2002-09-14
2007	2007-05-12	2007-09-23
2008	2008-06-18	2008-09-26
2009	2009-05-19	2009-09-30
2010	2010-06-25	2010-10-04
2011	2011-06-06	2011-10-02
2012	2012-04-24	2012-09-16
2013	2013-05-14	2013-09-08
2014	2014-05-29	2014-09-27
2015	2015-06-02	2015-10-11
2019	2019-06-06	2019-09-16
2020	2020-05-18	2020-09-24
2021	2021-05-07	2021-09-27
2022	2022-06-10	2022-09-27
2023	2023-05-21	2023-09-27
2024	2024-06-06	2024-09-29
2025	2025-05-10	2025-09-25
2026	2026-05-12	2026-09-10

Every Fixed Threshold

Fixed thresholds at Shell
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	40	89	2001	57
35 C (95 F): Days	40	29	2007	20
40 C (104 F): Days	4	2	2001	1
90 F (32.2 C): Days	40	75	2001	39
100 F (37.8 C): Days	24	8	1983	7
0 C (32 F): Ice days (max	40	62	1989	13
0 C (32 F): Frost days (min	35	227	1984	110
-10 C (14 F): Days with min	35	103	1993	21
-20 C (-4 F): Days with min	35	34	1989	6
-30 C (-22 F): Days with min	25	8	1989	1
-40 C (-40 F): Days with min	2	3	1990	3
20 C (68 F): Tropical nights (min	10	7	1974	1
25 C (77 F): Days with min	1	1	2007	1
10 mm (0.39 in): Days with 10 mm or more rain	46	15	1973	1
25 mm (0.98 in): Days with 25 mm or more rain	21	3	2011	1
10 cm (3.9 in): Days with 10 cm or more snowfall	24	4	1989	3
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1988	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1973.

Download the Data

Data for Shell 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Shell Threshold Days by Year

Key Facts for Shell Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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