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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 Weather Records (USC00137602)

Record envelope, standing records and threshold days for Shell Rock 1 SW (USC00137602), Iowa, United States, with 69 years of record.

Key Facts for Shell Rock 1 SW

  • Shell Rock 1 SW (USC00137602) is a weather station in Iowa, United States at 42.70 latitude and -92.59 longitude, 284 m (933 ft) above sea level.
  • The station reports from 1948 to 2016, 69 years of record.
  • 0 records set at Shell Rock 1 SW still stand.
  • Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

  • Location: Iowa, United States, 42.70 latitude, -92.59 longitude.
  • Elevation: 284 m (933 ft).
  • Period of record: 1948 to 2016, 69 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Shell Rock 1 SW, with 2026 drawn through them The band shows the record high and record low for each calendar day at Shell Rock 1 SW. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Shell Rock 1 SW. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Shell Rock 1 SW, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
Febn/an/an/an/a
Marn/an/an/an/a
Aprn/an/an/an/a
Mayn/an/an/an/a
Junn/an/an/an/a
Juln/an/an/an/a
Augn/an/an/an/a
Sepn/an/an/an/a
Octn/an/an/an/a
Novn/an/an/an/a
Decn/an/an/an/a

Which Years Hold Standing Records

0 standing records
Standing records at Shell Rock 1 SW by the year they were set 0 records at Shell Rock 1 SW still stand. 00000000000
0 records at Shell Rock 1 SW still stand.
Standing records at Shell Rock 1 SW by the year they were set
Year setStanding records

Wettest Day of Each Month

Jun: 104.1 mm (4.1 in)
Record daily precipitation for each month at Shell Rock 1 SW The wettest day on record for each calendar month at Shell Rock 1 SW. The most was 104.1 mm (4.1 in) on 17 June 2014. 050100150 Jan: 14.5 mm (0.6 in), 27 January 1949 Jan Feb: 22.9 mm (0.9 in), 25 February 1951 Feb Mar: 23.6 mm (0.9 in), 2 March 1951 Mar Apr: 51.8 mm (2.0 in), 29 April 1951 Apr May: 75.4 mm (3.0 in), 12 May 2014 May Jun: 104.1 mm (4.1 in), 17 June 2014 Jun Jul: 76.2 mm (3.0 in), 19 July 1963 Jul Aug: 84.3 mm (3.3 in), 29 August 2015 Aug Sep: 73.7 mm (2.9 in), 10 September 2016 Sep Oct: 81.3 mm (3.2 in), 14 October 2012 Oct Nov: 28.7 mm (1.1 in), 5 November 1948 Nov Dec: 20.3 mm (0.8 in), 5 December 1948 Dec
The wettest day on record for each calendar month at Shell Rock 1 SW. The most was 104.1 mm (4.1 in) on 17 June 2014.
Record daily precipitation for each month at Shell Rock 1 SW
MonthRecord daily precipitation (mm)Date
Jan14.5 mm (0.6 in)27 January 1949
Feb22.9 mm (0.9 in)25 February 1951
Mar23.6 mm (0.9 in)2 March 1951
Apr51.8 mm (2.0 in)29 April 1951
May75.4 mm (3.0 in)12 May 2014
Jun104.1 mm (4.1 in)17 June 2014
Jul76.2 mm (3.0 in)19 July 1963
Aug84.3 mm (3.3 in)29 August 2015
Sep73.7 mm (2.9 in)10 September 2016
Oct81.3 mm (3.2 in)14 October 2012
Nov28.7 mm (1.1 in)5 November 1948
Dec20.3 mm (0.8 in)5 December 1948

Latest Records

0

No records were set at this station in the latest data.

Extremes by Year

1948 to 2016
Yearly extremes at Shell Rock 1 SW: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)104.1 mm (4.1 in)201469.1 mm (2.7 in)11
Wettest five days (Rx5day)108.7 mm (4.3 in)195190.7 mm (3.6 in)5
Longest dry spell (CDD)31 days195021 days8

Wettest day (Rx1day)

Wettest day (Rx1day) at Shell Rock 1 SW by year The wettest day of the year at Shell Rock 1 SW, 1948 to 2016. The record is 104.1 mm (4.1 in) in 2014, marked on the chart; the median year is 69.1 mm (2.7 in). 20406080100120196019802000Record: 104.1 mm (4.1 in) in 2014
The wettest day of the year at Shell Rock 1 SW, 1948 to 2016. The record is 104.1 mm (4.1 in) in 2014, marked on the chart; the median year is 69.1 mm (2.7 in).
Wettest day (Rx1day) at Shell Rock 1 SW by year
YearWettest day (Rx1day)
194828.7 mm (1.1 in)
194950.8 mm (2.0 in)
195035.6 mm (1.4 in)
195160.2 mm (2.4 in)
196376.2 mm (3.0 in)
201141.9 mm (1.6 in)
201281.3 mm (3.2 in)
201369.1 mm (2.7 in)
2014104.1 mm (4.1 in)
201584.3 mm (3.3 in)
201678.7 mm (3.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Shell Rock 1 SW by year The wettest five days of the year at Shell Rock 1 SW, 1948 to 2016. The record is 108.7 mm (4.3 in) in 1951, marked on the chart; the median year is 90.7 mm (3.6 in). 406080100120196019802000Record: 108.7 mm (4.3 in) in 1951
The wettest five days of the year at Shell Rock 1 SW, 1948 to 2016. The record is 108.7 mm (4.3 in) in 1951, marked on the chart; the median year is 90.7 mm (3.6 in).
Wettest five days (Rx5day) at Shell Rock 1 SW by year
YearWettest five days (Rx5day)
194849.5 mm (1.9 in)
194990.7 mm (3.6 in)
195079.8 mm (3.1 in)
1951108.7 mm (4.3 in)
196395.3 mm (3.8 in)
2011n/a
2012n/a
2013n/a
2014n/a
2015n/a
2016n/a

Longest dry spell (CDD)

Longest dry spell (CDD) at Shell Rock 1 SW by year The longest dry spell of the year at Shell Rock 1 SW, 1948 to 2016. The record is 31 days in 1950, marked on the chart; the median year is 21 days. 010203040196019802000Record: 31 days in 1950
The longest dry spell of the year at Shell Rock 1 SW, 1948 to 2016. The record is 31 days in 1950, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Shell Rock 1 SW by year
YearLongest dry spell (CDD)
194822 days
194924 days
195031 days
195122 days
196319 days
20111 day
2012n/a
20132 days
2014n/a
20152 days
2016n/a

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Download the Data

  • Data for Shell Rock 1 SW standing records by year: CSV or JSON. Field meanings are on the data page.
  • 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). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).