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Built 2026-10-16 (16 October 2026)

Steamboat Rock Weather Records (USC00137932)

Record envelope, standing records and threshold days for Steamboat Rock (USC00137932), Iowa, United States, with 60 years of record.

Key Facts for Steamboat Rock

  • Steamboat Rock (USC00137932) is a weather station in Iowa, United States at 42.41 latitude and -93.07 longitude, 297 m (975 ft) above sea level.
  • The station reports from 1956 to 2015, 60 years of record.
  • 0 records set at Steamboat Rock still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Steamboat Rock set a daily record snowfall of 25.4 cm (10.0 in) on 20 December 2012.

About the Station

  • Location: Iowa, United States, 42.41 latitude, -93.07 longitude.
  • Elevation: 297 m (975 ft).
  • Period of record: 1956 to 2015, 60 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Steamboat Rock, with 2026 drawn through them The band shows the record high and record low for each calendar day at Steamboat Rock. 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 Steamboat Rock. 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 Steamboat Rock, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Which Years Hold Standing Records

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

All-Time Record Progression

3 new records
When Steamboat Rock set new all-time records 3 all-time records were set at Steamboat Rock between 26 November 1992 and 9 December 2009. Each dot is a new record. Record daily precipitationRecord daily snowfall26 November 1992: Record daily precipitation 139.7 mm (5.5 in)22 March 1993: Record daily precipitation 153.4 mm (6.0 in)9 December 2009: Record daily snowfall 35.6 cm (14.0 in)1995200020052010
3 all-time records were set at Steamboat Rock between 26 November 1992 and 9 December 2009. Each dot is a new record.
When Steamboat Rock set new all-time records
DateKindDetail
1992-11-26Record daily precipitationRecord daily precipitation 139.7 mm (5.5 in)
1993-03-22Record daily precipitationRecord daily precipitation 153.4 mm (6.0 in)
2009-12-09Record daily snowfallRecord daily snowfall 35.6 cm (14.0 in)

Wettest Day of Each Month

Mar: 153.4 mm (6.0 in)
Record daily precipitation for each month at Steamboat Rock The wettest day on record for each calendar month at Steamboat Rock. The most was 153.4 mm (6.0 in) on 22 March 1993. 050100150200 Jan: 39.9 mm (1.6 in), 21 January 1990 Jan Feb: 45.7 mm (1.8 in), 23 February 2011 Feb Mar: 153.4 mm (6.0 in), 22 March 1993 Mar Apr: 108.7 mm (4.3 in), 25 April 2008 Apr May: 81.3 mm (3.2 in), 24 May 2007 May Jun: 110.7 mm (4.4 in), 8 June 2008 Jun Jul: 127.8 mm (5.0 in), 10 July 2000 Jul Aug: 128.5 mm (5.1 in), 21 August 1966 Aug Sep: 109.7 mm (4.3 in), 11 September 2006 Sep Oct: 79.2 mm (3.1 in), 14 October 2012 Oct Nov: 139.7 mm (5.5 in), 26 November 1992 Nov Dec: 55.9 mm (2.2 in), 9 December 2009 Dec
The wettest day on record for each calendar month at Steamboat Rock. The most was 153.4 mm (6.0 in) on 22 March 1993.
Record daily precipitation for each month at Steamboat Rock
MonthRecord daily precipitation (mm)Date
Jan39.9 mm (1.6 in)21 January 1990
Feb45.7 mm (1.8 in)23 February 2011
Mar153.4 mm (6.0 in)22 March 1993
Apr108.7 mm (4.3 in)25 April 2008
May81.3 mm (3.2 in)24 May 2007
Jun110.7 mm (4.4 in)8 June 2008
Jul127.8 mm (5.0 in)10 July 2000
Aug128.5 mm (5.1 in)21 August 1966
Sep109.7 mm (4.3 in)11 September 2006
Oct79.2 mm (3.1 in)14 October 2012
Nov139.7 mm (5.5 in)26 November 1992
Dec55.9 mm (2.2 in)9 December 2009

Latest Records

20
Latest records at Steamboat Rock
DateStationRecordValueBeat old record byOld record stoodSignificance
20 December 2012Steamboat Rock, USdaily snowfall25.4 cm (10.0 in)16.5 cm (6.5 in)13 years35 of 100 (Notable)
11 December 2012Steamboat Rock, USdaily rain25.4 mm (1.0 in)8.9 mm (0.35 in)48 years29 of 100 (Routine)
14 October 2012Steamboat Rock, USmonthly rain79.2 mm (3.1 in)14.7 mm (0.6 in)2 years27 of 100 (Routine)
20 April 2012Steamboat Rock, USdaily rain35.6 mm (1.4 in)4.6 mm (0.18 in)33 years17 of 100 (Routine)
20 February 2012Steamboat Rock, USdaily snowfall6.4 cm (2.5 in)4.1 cm (1.6 in)48 years26 of 100 (Routine)
14 February 2012Steamboat Rock, USdaily rain25.4 mm (1.0 in)4.8 mm (0.19 in)6 years13 of 100 (Routine)
15 December 2011Steamboat Rock, USdaily rain21.8 mm (0.9 in)8.1 mm (0.32 in)20 years20 of 100 (Routine)
9 November 2011Steamboat Rock, USdaily snowfall6.4 cm (2.5 in)3.9 cm (1.5 in)20 years19 of 100 (Routine)
8 November 2011Steamboat Rock, USdaily rain9.7 mm (0.38 in)3.9 mm (0.15 in)24 years14 of 100 (Routine)
3 November 2011Steamboat Rock, USdaily rain20.8 mm (0.8 in)5.8 mm (0.23 in)49 years20 of 100 (Routine)
3 September 2011Steamboat Rock, USdaily rain29.0 mm (1.1 in)0.3 mm (0.01 in)49 years19 of 100 (Routine)
15 May 2011Steamboat Rock, USdaily rain28.4 mm (1.1 in)17.5 mm (0.7 in)8 years20 of 100 (Routine)
26 April 2011Steamboat Rock, USdaily rain67.1 mm (2.6 in)33.1 mm (1.3 in)4 years31 of 100 (Routine)
18 April 2011Steamboat Rock, USdaily snowfall2.5 cm (1.0 in)2.5 cm (1.0 in)29 years18 of 100 (Routine)
21 March 2011Steamboat Rock, USdaily rain13.0 mm (0.5 in)1.6 mm (0.06 in)44 years19 of 100 (Routine)
23 February 2011Steamboat Rock, USmonthly rain45.7 mm (1.8 in)2.5 mm (0.10 in)3 years19 of 100 (Routine)
1 February 2011Steamboat Rock, USdaily snowfall17.8 cm (7.0 in)10.2 cm (4.0 in)8 years26 of 100 (Routine)
1 February 2011Steamboat Rock, USdaily rain21.3 mm (0.8 in)4.8 mm (0.19 in)37 years20 of 100 (Routine)
17 January 2011Steamboat Rock, USdaily snowfall10.2 cm (4.0 in)8.9 cm (3.5 in)25 years29 of 100 (Routine)
17 January 2011Steamboat Rock, USdaily rain8.6 mm (0.34 in)2.8 mm (0.11 in)20 years15 of 100 (Routine)

Extremes by Year

1956 to 2015
Yearly extremes at Steamboat Rock: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)153.4 mm (6.0 in)199366.8 mm (2.6 in)57
Wettest five days (Rx5day)179.6 mm (7.1 in)1992101.5 mm (4.0 in)54
Longest dry spell (CDD)58 days199524 days56

Wettest day (Rx1day)

Wettest day (Rx1day) at Steamboat Rock by year The wettest day of the year at Steamboat Rock, 1956 to 2015. The record is 153.4 mm (6.0 in) in 1993, marked on the chart; the median year is 66.8 mm (2.6 in). 050100150200196019701980199020002010Record: 153.4 mm (6.0 in) in 1993
The wettest day of the year at Steamboat Rock, 1956 to 2015. The record is 153.4 mm (6.0 in) in 1993, marked on the chart; the median year is 66.8 mm (2.6 in).
Wettest day (Rx1day) at Steamboat Rock by year
YearWettest day (Rx1day)
195686.6 mm (3.4 in)
195758.2 mm (2.3 in)
195873.4 mm (2.9 in)
195944.2 mm (1.7 in)
196050.8 mm (2.0 in)
1961117.1 mm (4.6 in)
196258.7 mm (2.3 in)
196348.8 mm (1.9 in)
196497.3 mm (3.8 in)
196557.7 mm (2.3 in)
1966128.5 mm (5.1 in)
196735.8 mm (1.4 in)
196864.8 mm (2.6 in)
196931.5 mm (1.2 in)
197026.7 mm (1.1 in)
197152.3 mm (2.1 in)
197261.7 mm (2.4 in)
197373.7 mm (2.9 in)
1974109.0 mm (4.3 in)
197524.1 mm (0.9 in)
197696.3 mm (3.8 in)
197867.8 mm (2.7 in)
197958.9 mm (2.3 in)
198043.7 mm (1.7 in)
198156.9 mm (2.2 in)
198245.7 mm (1.8 in)
198368.6 mm (2.7 in)
198461.0 mm (2.4 in)
198550.8 mm (2.0 in)
198657.2 mm (2.3 in)
198766.8 mm (2.6 in)
198854.1 mm (2.1 in)
198982.6 mm (3.3 in)
199064.8 mm (2.6 in)
199190.2 mm (3.6 in)
1992139.7 mm (5.5 in)
1993153.4 mm (6.0 in)
199457.2 mm (2.3 in)
199543.7 mm (1.7 in)
199644.7 mm (1.8 in)
199795.3 mm (3.8 in)
199857.4 mm (2.3 in)
199967.3 mm (2.6 in)
2000127.8 mm (5.0 in)
200170.1 mm (2.8 in)
2002104.4 mm (4.1 in)
200376.7 mm (3.0 in)
200489.7 mm (3.5 in)
200547.2 mm (1.9 in)
2006109.7 mm (4.3 in)
200781.3 mm (3.2 in)
2008110.7 mm (4.4 in)
200972.1 mm (2.8 in)
2010110.7 mm (4.4 in)
201167.1 mm (2.6 in)
201279.2 mm (3.1 in)
20150.0 mm (0.00 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Steamboat Rock by year The wettest five days of the year at Steamboat Rock, 1956 to 2015. The record is 179.6 mm (7.1 in) in 1992, marked on the chart; the median year is 101.5 mm (4.0 in). 050100150200196019701980199020002010Record: 179.6 mm (7.1 in) in 1992
The wettest five days of the year at Steamboat Rock, 1956 to 2015. The record is 179.6 mm (7.1 in) in 1992, marked on the chart; the median year is 101.5 mm (4.0 in).
Wettest five days (Rx5day) at Steamboat Rock by year
YearWettest five days (Rx5day)
195628.7 mm (1.1 in)
195792.0 mm (3.6 in)
195889.5 mm (3.5 in)
195983.5 mm (3.3 in)
196080.3 mm (3.2 in)
1961126.0 mm (5.0 in)
196267.1 mm (2.6 in)
196366.6 mm (2.6 in)
1964101.1 mm (4.0 in)
1965145.4 mm (5.7 in)
1966130.8 mm (5.1 in)
196748.1 mm (1.9 in)
196891.6 mm (3.6 in)
196932.8 mm (1.3 in)
197030.3 mm (1.2 in)
197170.0 mm (2.8 in)
1972120.9 mm (4.8 in)
1973110.6 mm (4.4 in)
1974122.5 mm (4.8 in)
197550.3 mm (2.0 in)
1976131.9 mm (5.2 in)
197891.2 mm (3.6 in)
1979153.1 mm (6.0 in)
198063.8 mm (2.5 in)
198175.9 mm (3.0 in)
198269.3 mm (2.7 in)
1983146.8 mm (5.8 in)
1984102.4 mm (4.0 in)
198563.2 mm (2.5 in)
198673.0 mm (2.9 in)
198783.6 mm (3.3 in)
198874.1 mm (2.9 in)
1989129.3 mm (5.1 in)
1990136.5 mm (5.4 in)
1991118.4 mm (4.7 in)
1992179.6 mm (7.1 in)
1993161.1 mm (6.3 in)
199488.4 mm (3.5 in)
199550.8 mm (2.0 in)
199660.7 mm (2.4 in)
1997114.9 mm (4.5 in)
1998101.9 mm (4.0 in)
1999131.5 mm (5.2 in)
2000127.8 mm (5.0 in)
2001133.9 mm (5.3 in)
2002104.4 mm (4.1 in)
200392.7 mm (3.6 in)
2004109.0 mm (4.3 in)
200559.6 mm (2.3 in)
2006109.8 mm (4.3 in)
2007165.1 mm (6.5 in)
2008175.7 mm (6.9 in)
2009128.0 mm (5.0 in)
2010160.0 mm (6.3 in)
2011n/a
2012n/a
2015n/a

Longest dry spell (CDD)

Longest dry spell (CDD) at Steamboat Rock by year The longest dry spell of the year at Steamboat Rock, 1956 to 2015. The record is 58 days in 1995, marked on the chart; the median year is 24 days. 0204060196019701980199020002010Record: 58 days in 1995
The longest dry spell of the year at Steamboat Rock, 1956 to 2015. The record is 58 days in 1995, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Steamboat Rock by year
YearLongest dry spell (CDD)
195612 days
195729 days
195837 days
195926 days
196014 days
196117 days
196235 days
196322 days
196423 days
196520 days
196625 days
196716 days
196829 days
196916 days
197010 days
197129 days
197215 days
197316 days
197415 days
197524 days
197638 days
197819 days
197923 days
198031 days
198125 days
198217 days
198320 days
198428 days
198518 days
198633 days
198749 days
198832 days
198917 days
199019 days
199119 days
199220 days
199322 days
199426 days
199558 days
199637 days
199720 days
199847 days
199956 days
200023 days
200149 days
200236 days
200339 days
200424 days
200531 days
200633 days
200744 days
200815 days
200938 days
201027 days
20111 day
2012n/a
20152 days

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.

Rainfall Return Levels

45 years, 1957 to 2010

A day with at least 69.8 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 179.9 mm (7.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Steamboat Rock: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years69.8 mm (2.7 in)
5 years95.8 mm (3.8 in)
10 years114.3 mm (4.5 in)
25 years139.4 mm (5.5 in)
50 years159.1 mm (6.3 in)Longer than the 45 years of record
100 years179.9 mm (7.1 in)Longer than the 45 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 45 years of values from 1957 to 2010.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 153.4 mm (6.0 in) in 1993; 139.7 mm (5.5 in) in 1992; 128.5 mm (5.1 in) in 1966.

Download the Data

  • Data for Steamboat Rock standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Steamboat Rock 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

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