Barkhamsted Threshold Days by Year (USC00060299)

17 fixed thresholds counted per year at Barkhamsted (USC00060299): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Barkhamsted Thresholds

Barkhamsted: days with 10 mm (0.39 in) or more of precipitation in 91 years, most in 2018 with 56.
Barkhamsted: days with 25 mm (0.98 in) or more of precipitation in 91 years, most in 1977 with 24.
Barkhamsted: days with 50 mm (1.97 in) or more of precipitation in 83 years, most in 1938 with 8.
Barkhamsted: days with 10 cm (3.9 in) or more of snowfall in 33 years, most in 1993 with 8.
17 fixed thresholds have at least one qualifying day at Barkhamsted.

Days at or above 30 C (86 F)

16 years with a qualifying day

Days per year at Barkhamsted with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 51 in 2016.

Days at or above 30 C (86 F) per year at Barkhamsted
Year	Days	Decade average
2011	31	37.4
2012	39	37.4
2013	28	37.4
2014	23	37.4
2015	42	37.4
2016	51	37.4
2017	33	37.4
2018	49	37.4
2019	41	37.4
2020	49	37.7
2021	32	37.7
2022	39	37.7
2023	33	37.7
2024	36	37.7
2025	40	37.7
2026	35	37.7

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

First to last qualifying date each year at Barkhamsted
Year	First date	Last date
2011	2011-05-28	2011-09-04
2012	2012-04-17	2012-09-08
2013	2013-05-22	2013-09-12
2014	2014-05-13	2014-09-28
2015	2015-05-09	2015-09-19
2016	2016-05-26	2016-09-15
2017	2017-04-12	2017-09-28
2018	2018-05-03	2018-09-17
2019	2019-05-27	2019-09-24
2020	2020-06-05	2020-09-09
2021	2021-05-20	2021-09-16
2022	2022-05-22	2022-09-11
2023	2023-04-14	2023-10-05
2024	2024-05-22	2024-08-29
2025	2025-04-20	2025-08-18
2026	2026-04-15	2026-08-26

Every Fixed Threshold

Fixed thresholds at Barkhamsted
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	16	51	2016	35
35 C (95 F): Days	13	5	2025	3
90 F (32.2 C): Days	16	24	2016	15
100 F (37.8 C): Days	1	0	n/a	1
0 C (32 F): Ice days (max	16	53	2015	28
0 C (32 F): Frost days (min	16	167	2018	94
-10 C (14 F): Days with min	16	63	2014	35
-20 C (-4 F): Days with min	11	11	2015	3
20 C (68 F): Tropical nights (min	16	20	2023	12
10 mm (0.39 in): Days with 10 mm or more rain	91	56	2018	25
25 mm (0.98 in): Days with 25 mm or more rain	91	24	1977	6
50 mm (1.97 in): Days with 50 mm or more rain	83	8	1938	1
100 mm (3.94 in): Days with 100 mm or more rain	16	1	1944	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1955	1
10 cm (3.9 in): Days with 10 cm or more snowfall	33	8	1993	2
25 cm (9.8 in): Days with 25 cm or more snowfall	16	2	1996	2
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	2013	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2011.

Download the Data

Data for Barkhamsted 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Barkhamsted Threshold Days by Year (USC00060299)

Key Facts for Barkhamsted Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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