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

Walpole 3 Threshold Days by Year (USC00278858)

15 fixed thresholds counted per year at Walpole 3 (USC00278858): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Walpole 3 Thresholds

  • Walpole 3: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 2008 with 52.
  • Walpole 3: days with 25 mm (0.98 in) or more of precipitation in 35 years, most in 1990 with 21.
  • Walpole 3: days with 10 cm (3.9 in) or more of snowfall in 34 years, most in 2011 with 13.
  • Walpole 3: days with 50 mm (1.97 in) or more of precipitation in 28 years, most in 2011 with 4.
  • 15 fixed thresholds have at least one qualifying day at Walpole 3.
9 years with a qualifying day
Days at or above 30 C (86 F) per year at Walpole 3 Days per year at Walpole 3 with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 28 in 2010. 01020302006: 132007: 232008: 92009: 82010: 282011: 122012: 232013: 172014: 5200620072008200920102011201220132014
Days per year at Walpole 3 with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 28 in 2010.
Days at or above 30 C (86 F) per year at Walpole 3
YearDaysDecade average
20061313.3
20072313.3
2008913.3
2009813.3
20102817
20111217
20122317
20131717
2014517
First to last qualifying date each year at Walpole 3 For each year, a bar from the first to the last day at Walpole 3 meeting 30 C (86 F). 2006: 19 June 2006 to 4 August 20062007: 10 May 2007 to 23 October 20072008: 8 June 2008 to 26 July 20082009: 26 April 2009 to 19 August 20092010: 26 May 2010 to 8 September 20102011: 1 June 2011 to 24 July 20112012: 17 April 2012 to 1 September 20122013: 1 June 2013 to 12 September 20132014: 18 June 2014 to 24 July 201420062008201020122014JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Walpole 3 meeting 30 C (86 F).
First to last qualifying date each year at Walpole 3
YearFirst dateLast date
20062006-06-192006-08-04
20072007-05-102007-10-23
20082008-06-082008-07-26
20092009-04-262009-08-19
20102010-05-262010-09-08
20112011-06-012011-07-24
20122012-04-172012-09-01
20132013-06-012013-09-12
20142014-06-182014-07-24

Every Fixed Threshold

Fixed thresholds at Walpole 3
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days92820105
35 C (95 F): Days2120071
90 F (32.2 C): Days71020077
0 C (32 F): Ice days (max973201473
0 C (32 F): Frost days (min91692013158
-10 C (14 F): Days with min965201465
-20 C (-4 F): Days with min8820137
20 C (68 F): Tropical nights (min91020103
10 mm (0.39 in): Days with 10 mm or more rain3552200843
25 mm (0.98 in): Days with 25 mm or more rain3521199014
50 mm (1.97 in): Days with 50 mm or more rain28420113
100 mm (3.94 in): Days with 100 mm or more rain3119991
200 mm (7.87 in): Days with 200 mm or more rain10n/a1
10 cm (3.9 in): Days with 10 cm or more snowfall341320115
25 cm (9.8 in): Days with 25 cm or more snowfall18219872

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2006.

Download the Data

  • Data for Walpole 3 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).