Daily records
Page built 2026-10-17
Data as of 2026-10-12
Search
Built 2026-10-17 (17 October 2026)

Orwell Dam Threshold Days by Year

16 fixed thresholds counted per year at Orwell Dam (USC00216228): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Orwell Dam Thresholds

  • Orwell Dam: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 2019 with 29.
  • Orwell Dam: days with 25 mm (0.98 in) or more of precipitation in 26 years, most in 2020 with 7.
  • Orwell Dam: days with 50 mm (1.97 in) or more of precipitation in 16 years, most in 1983 with 3.
  • Orwell Dam: days with 10 cm (3.9 in) or more of snowfall in 13 years, most in 2019 with 5.
  • 16 fixed thresholds have at least one qualifying day at Orwell Dam.
6 years with a qualifying day
Days at or above 30 C (86 F) per year at Orwell Dam Days per year at Orwell Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 44 in 2021. 02040601982: 201983: 372019: 122020: 212021: 442022: 21198219832019202020212022
Days per year at Orwell Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 44 in 2021.
Days at or above 30 C (86 F) per year at Orwell Dam
YearDaysDecade average
19822028.5
19833728.5
20191212
20202128.7
20214428.7
20222128.7
First to last qualifying date each year at Orwell Dam For each year, a bar from the first to the last day at Orwell Dam meeting 30 C (86 F). 1982: 4 May 1982 to 22 August 19821983: 11 June 1983 to 28 September 19832019: 30 May 2019 to 18 September 20192020: 1 June 2020 to 26 August 20202021: 1 May 2021 to 28 September 20212022: 14 June 2022 to 16 September 2022198219832019202020212022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Orwell Dam meeting 30 C (86 F).
First to last qualifying date each year at Orwell Dam
YearFirst dateLast date
19821982-05-041982-08-22
19831983-06-111983-09-28
20192019-05-302019-09-18
20202020-06-012020-08-26
20212021-05-012021-09-28
20222022-06-142022-09-16

Every Fixed Threshold

Fixed thresholds at Orwell Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days644202121
35 C (95 F): Days4820213
90 F (32.2 C): Days625202110
100 F (37.8 C): Days1119831
0 C (32 F): Ice days (max685202084
0 C (32 F): Frost days (min619220202
-10 C (14 F): Days with min590202078
-20 C (-4 F): Days with min546202246
-30 C (-22 F): Days with min510202110
20 C (68 F): Tropical nights (min51719833
10 mm (0.39 in): Days with 10 mm or more rain2629201911
25 mm (0.98 in): Days with 25 mm or more rain26720204
50 mm (1.97 in): Days with 50 mm or more rain16319831
100 mm (3.94 in): Days with 100 mm or more rain10n/a1
10 cm (3.9 in): Days with 10 cm or more snowfall13520192
25 cm (9.8 in): Days with 25 cm or more snowfall2120191

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1982.

Download the Data

  • Data for Orwell Dam 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

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