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

Confluence 1 NW Threshold Days by Year (USC00361710)

15 fixed thresholds counted per year at Confluence 1 NW (USC00361710): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Confluence 1 NW Thresholds

  • Confluence 1 NW: days with 10 mm (0.39 in) or more of precipitation in 81 years, most in 1905 with 51.
  • Confluence 1 NW: days with 25 mm (0.98 in) or more of precipitation in 81 years, most in 1940 with 16.
  • Confluence 1 NW: days with 50 mm (1.97 in) or more of precipitation in 45 years, most in 1912 with 5.
  • Confluence 1 NW: days with 10 cm (3.9 in) or more of snowfall in 33 years, most in 1962 with 7.
  • 15 fixed thresholds have at least one qualifying day at Confluence 1 NW.
3 years with a qualifying day
Days at or above 30 C (86 F) per year at Confluence 1 NW Days per year at Confluence 1 NW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 59 in 1900. 02040601897: 501898: 531900: 59189718981900
Days per year at Confluence 1 NW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 59 in 1900.
Days at or above 30 C (86 F) per year at Confluence 1 NW
YearDaysDecade average
18975051.5
18985351.5
19005959
First to last qualifying date each year at Confluence 1 NW For each year, a bar from the first to the last day at Confluence 1 NW meeting 30 C (86 F). 1897: 16 June 1897 to 17 October 18971898: 20 May 1898 to 30 September 18981900: 9 May 1900 to 8 October 1900189718981900JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Confluence 1 NW meeting 30 C (86 F).
First to last qualifying date each year at Confluence 1 NW
YearFirst dateLast date
18971897-06-161897-10-17
18981898-05-201898-09-30
19001900-05-091900-10-08

Every Fixed Threshold

Fixed thresholds at Confluence 1 NW
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days359190059
35 C (95 F): Days3418972
90 F (32.2 C): Days329190029
0 C (32 F): Ice days (max344189823
0 C (32 F): Frost days (min41561897156
-10 C (14 F): Days with min443190043
-20 C (-4 F): Days with min4518981
-30 C (-22 F): Days with min10n/a1
20 C (68 F): Tropical nights (min2318971
10 mm (0.39 in): Days with 10 mm or more rain8151190543
25 mm (0.98 in): Days with 25 mm or more rain8116194012
50 mm (1.97 in): Days with 50 mm or more rain45519121
100 mm (3.94 in): Days with 100 mm or more rain2119541
10 cm (3.9 in): Days with 10 cm or more snowfall33719621
25 cm (9.8 in): Days with 25 cm or more snowfall5219642

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1897.

Download the Data

  • Data for Confluence 1 NW 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).