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Built 2026-10-17 (17 October 2026)

Garwin Weather Records (USC00133120)

Record envelope, standing records and threshold days for Garwin (USC00133120), Iowa, United States, with 49 years of record.

Key Facts for Garwin

  • Garwin (USC00133120) is a weather station in Iowa, United States at 42.09 latitude and -92.67 longitude, 286 m (938 ft) above sea level.
  • The station reports from 1978 to 2026, 49 years of record.
  • 0 records set at Garwin still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Garwin set a daily record precipitation of 26.2 mm (1.0 in) on 15 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Iowa, United States, 42.09 latitude, -92.67 longitude.
  • Elevation: 286 m (938 ft).
  • Period of record: 1978 to 2026, 49 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 Garwin, with 2026 drawn through them The band shows the record high and record low for each calendar day at Garwin. 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 Garwin. 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 Garwin, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Novn/an/an/an/a
Decn/an/an/an/a

Which Years Hold Standing Records

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

All-Time Record Progression

2 new records
When Garwin set new all-time records 2 all-time records were set at Garwin between 30 May 2008 and 9 December 2009. Each dot is a new record. Record daily precipitationRecord daily snowfall30 May 2008: Record daily precipitation 137.2 mm (5.4 in)9 December 2009: Record daily snowfall 33.0 cm (13.0 in)2010
2 all-time records were set at Garwin between 30 May 2008 and 9 December 2009. Each dot is a new record.
When Garwin set new all-time records
DateKindDetail
2008-05-30Record daily precipitationRecord daily precipitation 137.2 mm (5.4 in)
2009-12-09Record daily snowfallRecord daily snowfall 33.0 cm (13.0 in)

Wettest Day of Each Month

May: 137.2 mm (5.4 in)
Record daily precipitation for each month at Garwin The wettest day on record for each calendar month at Garwin. The most was 137.2 mm (5.4 in) on 30 May 2008. 050100150 Jan: 38.1 mm (1.5 in), 22 January 2008 Jan Feb: 28.7 mm (1.1 in), 27 February 2023 Feb Mar: 50.0 mm (2.0 in), 31 March 1998 Mar Apr: 91.9 mm (3.6 in), 27 April 2009 Apr May: 137.2 mm (5.4 in), 30 May 2008 May Jun: 103.6 mm (4.1 in), 15 June 1982 Jun Jul: 127.5 mm (5.0 in), 9 July 1993 Jul Aug: 89.7 mm (3.5 in), 26 August 1987 Aug Sep: 90.2 mm (3.6 in), 25 September 1984 Sep Oct: 67.3 mm (2.6 in), 25 October 2021 Oct Nov: 128.0 mm (5.0 in), 4 November 2003 Nov Dec: 33.8 mm (1.3 in), 5 December 1982 Dec
The wettest day on record for each calendar month at Garwin. The most was 137.2 mm (5.4 in) on 30 May 2008.
Record daily precipitation for each month at Garwin
MonthRecord daily precipitation (mm)Date
Jan38.1 mm (1.5 in)22 January 2008
Feb28.7 mm (1.1 in)27 February 2023
Mar50.0 mm (2.0 in)31 March 1998
Apr91.9 mm (3.6 in)27 April 2009
May137.2 mm (5.4 in)30 May 2008
Jun103.6 mm (4.1 in)15 June 1982
Jul127.5 mm (5.0 in)9 July 1993
Aug89.7 mm (3.5 in)26 August 1987
Sep90.2 mm (3.6 in)25 September 1984
Oct67.3 mm (2.6 in)25 October 2021
Nov128.0 mm (5.0 in)4 November 2003
Dec33.8 mm (1.3 in)5 December 1982

Latest Records

20
Latest records at Garwin
DateStationRecordValueBeat old record byOld record stoodSignificance
15 September 2026Garwin, USdaily rain (Provisional)26.2 mm (1.0 in)10.2 mm (0.4 in)33 years20 of 100 (Routine)
9 September 2026Garwin, USdaily rain (Provisional)31.5 mm (1.2 in)1.3 mm (0.05 in)36 years15 of 100 (Routine)
12 August 2026Garwin, USdaily rain27.4 mm (1.1 in)7.3 mm (0.29 in)32 years17 of 100 (Routine)
1 August 2026Garwin, USdaily rain23.9 mm (0.9 in)8.9 mm (0.35 in)31 years18 of 100 (Routine)
31 July 2026Garwin, USdaily rain29.0 mm (1.1 in)0.6 mm (0.02 in)16 years8 of 100 (Routine)
21 July 2026Garwin, USdaily rain29.2 mm (1.1 in)12.2 mm (0.5 in)17 years16 of 100 (Routine)
3 July 2026Garwin, USdaily rain46.5 mm (1.8 in)28.0 mm (1.1 in)25 years28 of 100 (Routine)
18 June 2026Garwin, USdaily rain28.4 mm (1.1 in)2.5 mm (0.10 in)24 years12 of 100 (Routine)
5 June 2026Garwin, USdaily rain23.9 mm (0.9 in)7.6 mm (0.30 in)20 years14 of 100 (Routine)
16 April 2026Garwin, USdaily rain34.5 mm (1.4 in)6.6 mm (0.26 in)33 years19 of 100 (Routine)
3 April 2026Garwin, USdaily rain15.2 mm (0.6 in)0.5 mm (0.02 in)41 years16 of 100 (Routine)
2 April 2026Garwin, USdaily rain34.8 mm (1.4 in)19.1 mm (0.8 in)0 years19 of 100 (Routine)
7 March 2026Garwin, USdaily rain18.3 mm (0.7 in)6.9 mm (0.27 in)16 years16 of 100 (Routine)
20 February 2026Garwin, USdaily snowfall16.0 cm (6.3 in)5.8 cm (2.3 in)7 years19 of 100 (Routine)
9 January 2026Garwin, USdaily rain24.6 mm (1.0 in)11.4 mm (0.4 in)2 years20 of 100 (Routine)
13 December 2025Garwin, USdaily snowfall12.2 cm (4.8 in)9.7 cm (3.8 in)36 years33 of 100 (Routine)
13 December 2025Garwin, USdaily snow depth (Tie)22.9 cm (9.0 in)tie16 years2 of 100 (Routine)
7 December 2025Garwin, USdaily snow depth35.6 cm (14.0 in)10.2 cm (4.0 in)31 years25 of 100 (Routine)
30 November 2025Garwin, USmonthly snow depth27.9 cm (11.0 in)12.7 cm (5.0 in)34 years58 of 100 (Notable)
30 November 2025Garwin, USdaily snowfall12.7 cm (5.0 in)7.6 cm (3.0 in)16 years33 of 100 (Routine)

Extremes by Year

1978 to 2026
Yearly extremes at Garwin: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)137.2 mm (5.4 in)200862.7 mm (2.5 in)44
Wettest five days (Rx5day)175.7 mm (6.9 in)199393.4 mm (3.7 in)43
Longest dry spell (CDD)48 days198724 days44

Wettest day (Rx1day)

Wettest day (Rx1day) at Garwin by year The wettest day of the year at Garwin, 1978 to 2026. The record is 137.2 mm (5.4 in) in 2008, marked on the chart; the median year is 62.7 mm (2.5 in). 25507510012515019801990200020102020Record: 137.2 mm (5.4 in) in 2008
The wettest day of the year at Garwin, 1978 to 2026. The record is 137.2 mm (5.4 in) in 2008, marked on the chart; the median year is 62.7 mm (2.5 in).
Wettest day (Rx1day) at Garwin by year
YearWettest day (Rx1day)
197862.5 mm (2.5 in)
197971.9 mm (2.8 in)
198054.1 mm (2.1 in)
198154.4 mm (2.1 in)
1982103.6 mm (4.1 in)
198345.2 mm (1.8 in)
198490.2 mm (3.6 in)
198546.0 mm (1.8 in)
198681.3 mm (3.2 in)
198789.7 mm (3.5 in)
198854.6 mm (2.1 in)
198952.8 mm (2.1 in)
199058.2 mm (2.3 in)
199162.7 mm (2.5 in)
199255.9 mm (2.2 in)
1993127.5 mm (5.0 in)
199478.2 mm (3.1 in)
199541.9 mm (1.6 in)
199683.8 mm (3.3 in)
199784.3 mm (3.3 in)
199850.0 mm (2.0 in)
199961.2 mm (2.4 in)
200084.3 mm (3.3 in)
200146.2 mm (1.8 in)
200260.2 mm (2.4 in)
2003128.0 mm (5.0 in)
200481.5 mm (3.2 in)
200546.0 mm (1.8 in)
200647.0 mm (1.9 in)
200755.9 mm (2.2 in)
2008137.2 mm (5.4 in)
200991.9 mm (3.6 in)
201064.0 mm (2.5 in)
201150.3 mm (2.0 in)
201286.1 mm (3.4 in)
201868.8 mm (2.7 in)
201962.7 mm (2.5 in)
202090.9 mm (3.6 in)
202167.3 mm (2.6 in)
202253.1 mm (2.1 in)
202344.2 mm (1.7 in)
202477.5 mm (3.1 in)
202564.5 mm (2.5 in)
202646.5 mm (1.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Garwin by year The wettest five days of the year at Garwin, 1978 to 2026. The record is 175.7 mm (6.9 in) in 1993, marked on the chart; the median year is 93.4 mm (3.7 in). 5010015020019801990200020102020Record: 175.7 mm (6.9 in) in 1993
The wettest five days of the year at Garwin, 1978 to 2026. The record is 175.7 mm (6.9 in) in 1993, marked on the chart; the median year is 93.4 mm (3.7 in).
Wettest five days (Rx5day) at Garwin by year
YearWettest five days (Rx5day)
197890.4 mm (3.6 in)
1979144.8 mm (5.7 in)
198093.4 mm (3.7 in)
198167.4 mm (2.7 in)
1982122.6 mm (4.8 in)
198377.3 mm (3.0 in)
198490.2 mm (3.6 in)
198578.8 mm (3.1 in)
198691.8 mm (3.6 in)
1987129.1 mm (5.1 in)
198876.2 mm (3.0 in)
198974.9 mm (2.9 in)
1990121.6 mm (4.8 in)
199191.7 mm (3.6 in)
199296.0 mm (3.8 in)
1993175.7 mm (6.9 in)
1994148.1 mm (5.8 in)
199566.5 mm (2.6 in)
199690.9 mm (3.6 in)
1997125.5 mm (4.9 in)
1998106.9 mm (4.2 in)
199974.9 mm (2.9 in)
2000107.0 mm (4.2 in)
200167.3 mm (2.6 in)
2002109.7 mm (4.3 in)
2003167.4 mm (6.6 in)
2004131.5 mm (5.2 in)
200582.8 mm (3.3 in)
200688.1 mm (3.5 in)
200799.6 mm (3.9 in)
2008151.4 mm (6.0 in)
2009129.5 mm (5.1 in)
2010106.7 mm (4.2 in)
201161.0 mm (2.4 in)
2012n/a
2018155.8 mm (6.1 in)
201995.2 mm (3.7 in)
2020170.8 mm (6.7 in)
202189.4 mm (3.5 in)
202263.0 mm (2.5 in)
202371.4 mm (2.8 in)
202498.8 mm (3.9 in)
202587.4 mm (3.4 in)
202681.3 mm (3.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Garwin by year The longest dry spell of the year at Garwin, 1978 to 2026. The record is 48 days in 1987, marked on the chart; the median year is 24 days. 020406019801990200020102020Record: 48 days in 1987
The longest dry spell of the year at Garwin, 1978 to 2026. The record is 48 days in 1987, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Garwin by year
YearLongest dry spell (CDD)
197823 days
197930 days
198030 days
198125 days
198217 days
198321 days
198428 days
198525 days
198629 days
198748 days
198843 days
198934 days
199019 days
199137 days
199222 days
199324 days
199423 days
199546 days
199630 days
199722 days
199830 days
199937 days
200018 days
200116 days
200235 days
200328 days
200417 days
200517 days
200618 days
200729 days
200814 days
200924 days
201027 days
201116 days
20121 day
201823 days
201916 days
202019 days
202122 days
202226 days
202323 days
202421 days
202539 days
202614 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

35 years, 1980 to 2022

A day with at least 65.1 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 169.1 mm (6.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Garwin: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years65.1 mm (2.6 in)
5 years86.6 mm (3.4 in)
10 years103.1 mm (4.1 in)
25 years126.9 mm (5.0 in)
50 years146.9 mm (5.8 in)Longer than the 35 years of record
100 years169.1 mm (6.7 in)Longer than the 35 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, 35 years of values from 1980 to 2022.

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: 137.2 mm (5.4 in) in 2008; 128.0 mm (5.0 in) in 2003; 127.5 mm (5.0 in) in 1993.

Download the Data

  • Data for Garwin standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Garwin 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-16).