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Built 2026-10-17 (17 October 2026)

Delta Downs Station Threshold Days by Year

5 fixed thresholds counted per year at Delta Downs Station (ASN00029111): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Delta Downs Station Thresholds

  • Delta Downs Station: days with 10 mm (0.39 in) or more of precipitation in 24 years, most in 1974 with 51.
  • Delta Downs Station: days with 25 mm (0.98 in) or more of precipitation in 24 years, most in 1974 with 34.
  • Delta Downs Station: days with 50 mm (1.97 in) or more of precipitation in 24 years, most in 1974 with 15.
  • Delta Downs Station: days with 100 mm (3.94 in) or more of precipitation in 14 years, most in 1991 with 4.
  • 5 fixed thresholds have at least one qualifying day at Delta Downs Station.
24 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Delta Downs Station Days per year at Delta Downs Station with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 51 in 1974. 02040601974: 511975: 411976: 281977: 181978: 181979: 301980: 221981: 251988: 201989: 281990: 271991: 351992: 151993: 331994: 261995: 301997: 281998: 311999: 332000: 412001: 272004: 322005: 212006: 2619741977198019891992199519992004
Days per year at Delta Downs Station with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 51 in 1974.
Days with 10 mm (0.39 in) or more of precipitation per year at Delta Downs Station
YearDaysDecade average
19745131
19754131
19762831
19771831
19781831
19793031
19802223.8
19812523.8
19882023.8
19892823.8
19902728.7
19913528.7
19921528.7
19933328.7
19942628.7
19953028.7
19972828.7
19983128.7
19993328.7
20004129.4
20012729.4
20043229.4
20052129.4
20062629.4
First to last qualifying date each year at Delta Downs Station For each year, a bar from the first to the last day at Delta Downs Station meeting 10 mm (0.39 in). 1974: 2 January 1974 to 29 December 19741975: 4 January 1975 to 30 December 19751976: 2 January 1976 to 26 December 19761977: 9 January 1977 to 22 December 19771978: 12 January 1978 to 14 December 19781979: 5 January 1979 to 30 December 19791980: 3 January 1980 to 28 December 19801981: 3 January 1981 to 29 December 19811988: 27 January 1988 to 27 December 19881989: 5 January 1989 to 16 December 19891990: 21 January 1990 to 26 December 19901991: 3 January 1991 to 16 December 19911992: 1 January 1992 to 18 December 19921993: 2 January 1993 to 27 December 19931994: 16 January 1994 to 30 November 19941995: 10 January 1995 to 27 December 19951997: 4 January 1997 to 28 December 19971998: 1 January 1998 to 31 December 19981999: 6 January 1999 to 25 December 19992000: 6 January 2000 to 31 December 20002001: 10 January 2001 to 31 December 20012004: 8 January 2004 to 31 December 20042005: 5 January 2005 to 3 December 20052006: 24 January 2006 to 7 December 200619741977198019891992199519992004JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Delta Downs Station meeting 10 mm (0.39 in).
First to last qualifying date each year at Delta Downs Station
YearFirst dateLast date
19741974-01-021974-12-29
19751975-01-041975-12-30
19761976-01-021976-12-26
19771977-01-091977-12-22
19781978-01-121978-12-14
19791979-01-051979-12-30
19801980-01-031980-12-28
19811981-01-031981-12-29
19881988-01-271988-12-27
19891989-01-051989-12-16
19901990-01-211990-12-26
19911991-01-031991-12-16
19921992-01-011992-12-18
19931993-01-021993-12-27
19941994-01-161994-11-30
19951995-01-101995-12-27
19971997-01-041997-12-28
19981998-01-011998-12-31
19991999-01-061999-12-25
20002000-01-062000-12-31
20012001-01-102001-12-31
20042004-01-082004-12-31
20052005-01-052005-12-03
20062006-01-242006-12-07

Every Fixed Threshold

Fixed thresholds at Delta Downs Station
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2451197426
25 mm (0.98 in): Days with 25 mm or more rain2434197411
50 mm (1.97 in): Days with 50 mm or more rain241519743
100 mm (3.94 in): Days with 100 mm or more rain14419912
200 mm (7.87 in): Days with 200 mm or more rain6119741

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1974.

Download the Data

  • Data for Delta Downs Station 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 (2025-12-31).