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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Lyneham Threshold Days by Year (UKM00003740)

7 fixed thresholds counted per year at Lyneham (UKM00003740): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lyneham Thresholds

  • Lyneham: days with 10 mm (0.39 in) or more of precipitation in 19 years, most in 1977 with 27.
  • Lyneham: days with 25 mm (0.98 in) or more of precipitation in 17 years, most in 1973 with 3.
  • Lyneham: days with a maximum temperature at or below 0 C (32 F) in 8 years, most in 1979 with 13.
  • Lyneham: days with a maximum temperature at or above 30 C (86 F) in 5 years, most in 1976 with 14.
  • 7 fixed thresholds have at least one qualifying day at Lyneham.
5 years with a qualifying day
Days at or above 30 C (86 F) per year at Lyneham Days per year at Lyneham with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 14 in 1976. 0510151975: 51976: 142015: 12022: 62025: 519751976201520222025
Days per year at Lyneham with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 14 in 1976.
Days at or above 30 C (86 F) per year at Lyneham
YearDaysDecade average
197559.5
1976149.5
201511
202265.5
202555.5
First to last qualifying date each year at Lyneham For each year, a bar from the first to the last day at Lyneham meeting 30 C (86 F). 1975: 2 August 1975 to 8 August 19751976: 25 June 1976 to 25 August 19762015: 1 July 2015 to 1 July 20152022: 18 July 2022 to 14 August 20222025: 30 June 2025 to 13 August 202519751976201520222025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Lyneham meeting 30 C (86 F).
First to last qualifying date each year at Lyneham
YearFirst dateLast date
19751975-08-021975-08-08
19761976-06-251976-08-25
20152015-07-012015-07-01
20222022-07-182022-08-14
20252025-06-302025-08-13

Every Fixed Threshold

Fixed thresholds at Lyneham
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days51419765
90 F (32.2 C): Days5420221
0 C (32 F): Ice days (max81319794
0 C (32 F): Frost days (min10n/a26
10 mm (0.39 in): Days with 10 mm or more rain1927197710
25 mm (0.98 in): Days with 25 mm or more rain17319731
50 mm (1.97 in): Days with 50 mm or more rain2119731

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1975.

Download the Data

  • Data for Lyneham 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).