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

Shell Rock 1 SW Threshold Days by Year (USC00137602)

3 fixed thresholds counted per year at Shell Rock 1 SW (USC00137602): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Shell Rock 1 SW Thresholds

  • Shell Rock 1 SW: days with 10 mm (0.39 in) or more of precipitation in 2 years, most in 1950 with 23.
  • Shell Rock 1 SW: days with 25 mm (0.98 in) or more of precipitation in 2 years, most in 1950 with 6.
  • Shell Rock 1 SW: days with 50 mm (1.97 in) or more of precipitation in 1 years, most in 1949 with 1.
  • 3 fixed thresholds have at least one qualifying day at Shell Rock 1 SW.
2 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Shell Rock 1 SW Days per year at Shell Rock 1 SW with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 23 in 1950. 01020301949: 161950: 2319491950
Days per year at Shell Rock 1 SW with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 23 in 1950.
Days with 10 mm (0.39 in) or more of precipitation per year at Shell Rock 1 SW
YearDaysDecade average
19491616
19502323
First to last qualifying date each year at Shell Rock 1 SW For each year, a bar from the first to the last day at Shell Rock 1 SW meeting 10 mm (0.39 in). 1949: 27 January 1949 to 21 October 19491950: 25 January 1950 to 7 October 195019491950JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Shell Rock 1 SW meeting 10 mm (0.39 in).
First to last qualifying date each year at Shell Rock 1 SW
YearFirst dateLast date
19491949-01-271949-10-21
19501950-01-251950-10-07

Every Fixed Threshold

Fixed thresholds at Shell Rock 1 SW
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain223195023
25 mm (0.98 in): Days with 25 mm or more rain2619506
50 mm (1.97 in): Days with 50 mm or more rain1119491

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

  • Data for Shell Rock 1 SW 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).