Daily records
Page built 2026-10-16
Data as of 2025-12-31
Search
Built 2026-10-16 (16 October 2026)

Marshalltwn Pol Cn Pl Weather Records (USC00135203)

Record envelope, standing records and threshold days for Marshalltwn Pol Cn Pl (USC00135203), Iowa, United States, with 73 years of record.

Key Facts for Marshalltwn Pol Cn Pl

  • Marshalltwn Pol Cn Pl (USC00135203) is a weather station in Iowa, United States at 42.07 latitude and -92.91 longitude, 265 m (870 ft) above sea level.
  • The station reports from 1954 to 2026, 73 years of record.
  • 1,462 records set at Marshalltwn Pol Cn Pl 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, 42.07 latitude, -92.91 longitude.
  • Elevation: 265 m (870 ft).
  • Period of record: 1954 to 2026, 73 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Marshalltwn Pol Cn Pl, with 2026 drawn through them The band shows the record high and record low for each calendar day at Marshalltwn Pol Cn Pl. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Marshalltwn Pol Cn Pl. 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 Marshalltwn Pol Cn Pl, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan11.1 C (52.0 F)-28.3 C (-18.9 F)n/an/a
Feb15.6 C (60.1 F)-24.4 C (-11.9 F)n/an/a
Mar28.9 C (84.0 F)-16.7 C (1.9 F)n/an/a
Apr31.7 C (89.1 F)-4.4 C (24.1 F)n/an/a
May35.6 C (96.1 F)1.7 C (35.1 F)n/an/a
Jun37.2 C (99.0 F)8.3 C (46.9 F)n/an/a
Jul37.2 C (99.0 F)12.2 C (54.0 F)n/an/a
Aug35.6 C (96.1 F)10.0 C (50.0 F)n/an/a
Sep33.9 C (93.0 F)1.1 C (34.0 F)n/an/a
Oct29.4 C (84.9 F)-6.1 C (21.0 F)n/an/a
Nov23.9 C (75.0 F)-17.2 C (1.0 F)n/an/a
Dec14.4 C (57.9 F)-23.9 C (-11.0 F)n/an/a

Which Years Hold Standing Records

1,462 standing records
Standing records at Marshalltwn Pol Cn Pl by the year they were set 1,462 records at Marshalltwn Pol Cn Pl still stand. 1991 holds the most, with 377. 01002003004001978: 351990: 371991: 3771992: 3451993: 3321994: 336197819901991199219931994
1,462 records at Marshalltwn Pol Cn Pl still stand. 1991 holds the most, with 377.
Standing records at Marshalltwn Pol Cn Pl by the year they were set
Year setStanding records
197835
199037
1991377
1992345
1993332
1994336

Wettest Day of Each Month

May: 115.6 mm (4.6 in)
Record daily precipitation for each month at Marshalltwn Pol Cn Pl The wettest day on record for each calendar month at Marshalltwn Pol Cn Pl. The most was 115.6 mm (4.6 in) on 27 May 2013. 050100150 Jan: 37.6 mm (1.5 in), 22 January 2018 Jan Feb: 26.2 mm (1.0 in), 15 February 1992 Feb Mar: 54.1 mm (2.1 in), 31 March 1993 Mar Apr: 67.3 mm (2.6 in), 18 April 2013 Apr May: 115.6 mm (4.6 in), 27 May 2013 May Jun: 71.1 mm (2.8 in), 17 June 2014 Jun Jul: 106.7 mm (4.2 in), 8 July 1993 Jul Aug: 95.5 mm (3.8 in), 16 August 1993 Aug Sep: 77.5 mm (3.1 in), 4 September 2018 Sep Oct: 69.9 mm (2.8 in), 25 October 2021 Oct Nov: 53.6 mm (2.1 in), 5 November 2022 Nov Dec: 62.2 mm (2.4 in), 14 December 2015 Dec
The wettest day on record for each calendar month at Marshalltwn Pol Cn Pl. The most was 115.6 mm (4.6 in) on 27 May 2013.
Record daily precipitation for each month at Marshalltwn Pol Cn Pl
MonthRecord daily precipitation (mm)Date
Jan37.6 mm (1.5 in)22 January 2018
Feb26.2 mm (1.0 in)15 February 1992
Mar54.1 mm (2.1 in)31 March 1993
Apr67.3 mm (2.6 in)18 April 2013
May115.6 mm (4.6 in)27 May 2013
Jun71.1 mm (2.8 in)17 June 2014
Jul106.7 mm (4.2 in)8 July 1993
Aug95.5 mm (3.8 in)16 August 1993
Sep77.5 mm (3.1 in)4 September 2018
Oct69.9 mm (2.8 in)25 October 2021
Nov53.6 mm (2.1 in)5 November 2022
Dec62.2 mm (2.4 in)14 December 2015

Period of Record Coverage

1978 to 1994
Days with data per year at Marshalltwn Pol Cn Pl 6 years of record at Marshalltwn Pol Cn Pl, 1978 to 1994. 2 years have data for under 90 percent of days and are left out of rankings: 1978, 1990. 1978: 29 of 365 days1990: 52 of 365 days1991: 333 of 365 days1992: 334 of 366 days1993: 339 of 365 days1994: 339 of 365 days1990
6 years of record at Marshalltwn Pol Cn Pl, 1978 to 1994. 2 years have data for under 90 percent of days and are left out of rankings: 1978, 1990.
Days with data per year at Marshalltwn Pol Cn Pl
YearDays with dataShare of yearComplete
1978298%No
19905214%No
199133391%Yes
199233491%Yes
199333993%Yes
199433993%Yes

Latest Records

0

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

Extremes by Year

1954 to 2026
Yearly extremes at Marshalltwn Pol Cn Pl: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)37.2 C (99.0 F)199134.2 C (93.5 F)6
Coldest night (TNn)-28.3 C (-18.9 F)1994-23.6 C (-10.5 F)6
Wettest day (Rx1day)115.6 mm (4.6 in)201360.0 mm (2.4 in)30
Wettest five days (Rx5day)207.3 mm (8.2 in)199396.3 mm (3.8 in)24
Longest dry spell (CDD)43 days198819 days28

Hottest day (TXx)

Hottest day (TXx) at Marshalltwn Pol Cn Pl by year The hottest day of the year at Marshalltwn Pol Cn Pl, 1954 to 2026. The record is 37.2 C (99.0 F) in 1991, marked on the chart; the median year is 34.2 C (93.5 F). 20253035401960198020002020Record: 37.2 C (99.0 F) in 1991
The hottest day of the year at Marshalltwn Pol Cn Pl, 1954 to 2026. The record is 37.2 C (99.0 F) in 1991, marked on the chart; the median year is 34.2 C (93.5 F).
Hottest day (TXx) at Marshalltwn Pol Cn Pl by year
YearHottest day (TXx)
1954n/a
1960n/a
1968n/a
1969n/a
1971n/a
197822.2 C (72.0 F)
1987n/a
1988n/a
1989n/a
199023.9 C (75.0 F)
199137.2 C (99.0 F)
199234.4 C (93.9 F)
199333.9 C (93.0 F)
199437.2 C (99.0 F)
2011n/a
2012n/a
2013n/a
2014n/a
2015n/a
2016n/a
2017n/a
2018n/a
2019n/a
2020n/a
2021n/a
2022n/a
2023n/a
2024n/a
2025n/a
2026n/a

Coldest night (TNn)

Coldest night (TNn) at Marshalltwn Pol Cn Pl by year The coldest night of the year at Marshalltwn Pol Cn Pl, 1954 to 2026. The record is -28.3 C (-18.9 F) in 1994, marked on the chart; the median year is -23.6 C (-10.5 F). -30-25-20-15-101960198020002020Record: -28.3 C (-18.9 F) in 1994
The coldest night of the year at Marshalltwn Pol Cn Pl, 1954 to 2026. The record is -28.3 C (-18.9 F) in 1994, marked on the chart; the median year is -23.6 C (-10.5 F).
Coldest night (TNn) at Marshalltwn Pol Cn Pl by year
YearColdest night (TNn)
1954n/a
1960n/a
1968n/a
1969n/a
1971n/a
1978-13.3 C (8.1 F)
1987n/a
1988n/a
1989n/a
1990-23.9 C (-11.0 F)
1991-23.9 C (-11.0 F)
1992-20.6 C (-5.1 F)
1993-23.3 C (-9.9 F)
1994-28.3 C (-18.9 F)
2011n/a
2012n/a
2013n/a
2014n/a
2015n/a
2016n/a
2017n/a
2018n/a
2019n/a
2020n/a
2021n/a
2022n/a
2023n/a
2024n/a
2025n/a
2026n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Marshalltwn Pol Cn Pl by year The wettest day of the year at Marshalltwn Pol Cn Pl, 1954 to 2026. The record is 115.6 mm (4.6 in) in 2013, marked on the chart; the median year is 60.0 mm (2.4 in). 0501001501960198020002020Record: 115.6 mm (4.6 in) in 2013
The wettest day of the year at Marshalltwn Pol Cn Pl, 1954 to 2026. The record is 115.6 mm (4.6 in) in 2013, marked on the chart; the median year is 60.0 mm (2.4 in).
Wettest day (Rx1day) at Marshalltwn Pol Cn Pl by year
YearWettest day (Rx1day)
195491.9 mm (3.6 in)
196066.3 mm (2.6 in)
196838.4 mm (1.5 in)
196946.2 mm (1.8 in)
197151.6 mm (2.0 in)
197838.9 mm (1.5 in)
198715.5 mm (0.6 in)
198850.3 mm (2.0 in)
198943.2 mm (1.7 in)
199076.2 mm (3.0 in)
199155.9 mm (2.2 in)
199260.2 mm (2.4 in)
1993106.7 mm (4.2 in)
199464.0 mm (2.5 in)
20110.0 mm (0.00 in)
201251.8 mm (2.0 in)
2013115.6 mm (4.6 in)
201471.1 mm (2.8 in)
201562.2 mm (2.4 in)
201677.0 mm (3.0 in)
201733.0 mm (1.3 in)
201877.5 mm (3.1 in)
201948.3 mm (1.9 in)
202051.1 mm (2.0 in)
202169.9 mm (2.8 in)
202259.7 mm (2.4 in)
202333.3 mm (1.3 in)
202487.6 mm (3.4 in)
202562.5 mm (2.5 in)
202670.6 mm (2.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Marshalltwn Pol Cn Pl by year The wettest five days of the year at Marshalltwn Pol Cn Pl, 1954 to 2026. The record is 207.3 mm (8.2 in) in 1993, marked on the chart; the median year is 96.3 mm (3.8 in). 0501001502002501960198020002020Record: 207.3 mm (8.2 in) in 1993
The wettest five days of the year at Marshalltwn Pol Cn Pl, 1954 to 2026. The record is 207.3 mm (8.2 in) in 1993, marked on the chart; the median year is 96.3 mm (3.8 in).
Wettest five days (Rx5day) at Marshalltwn Pol Cn Pl by year
YearWettest five days (Rx5day)
1954106.7 mm (4.2 in)
1960n/a
1968n/a
1969n/a
1971n/a
1978n/a
198719.1 mm (0.8 in)
198871.4 mm (2.8 in)
198968.3 mm (2.7 in)
1990131.8 mm (5.2 in)
199178.3 mm (3.1 in)
1992107.7 mm (4.2 in)
1993207.3 mm (8.2 in)
1994138.5 mm (5.5 in)
2011n/a
201251.1 mm (2.0 in)
201384.6 mm (3.3 in)
2014132.3 mm (5.2 in)
201597.4 mm (3.8 in)
201687.4 mm (3.4 in)
201759.7 mm (2.4 in)
2018144.9 mm (5.7 in)
201995.9 mm (3.8 in)
202096.6 mm (3.8 in)
2021100.9 mm (4.0 in)
202263.8 mm (2.5 in)
202347.3 mm (1.9 in)
2024116.4 mm (4.6 in)
2025102.9 mm (4.1 in)
202691.4 mm (3.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Marshalltwn Pol Cn Pl by year The longest dry spell of the year at Marshalltwn Pol Cn Pl, 1954 to 2026. The record is 43 days in 1988, marked on the chart; the median year is 19 days. 02040601960198020002020Record: 43 days in 1988
The longest dry spell of the year at Marshalltwn Pol Cn Pl, 1954 to 2026. The record is 43 days in 1988, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at Marshalltwn Pol Cn Pl by year
YearLongest dry spell (CDD)
19545 days
1960n/a
19681 day
19692 days
19712 days
1978n/a
19878 days
198843 days
198923 days
199018 days
199137 days
199217 days
199326 days
199441 days
20111 day
20127 days
201316 days
201422 days
201526 days
201620 days
201722 days
201816 days
201917 days
202017 days
202123 days
202226 days
202324 days
202430 days
202540 days
202615 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.

Download the Data

  • Data for Marshalltwn Pol Cn Pl standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Marshalltwn Pol Cn Pl 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).