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Built 2026-10-17 (17 October 2026)

Randolph Weather Records (USC00136891)

Record envelope, standing records and threshold days for Randolph (USC00136891), Iowa, United States, with 74 years of record.

Key Facts for Randolph

  • Randolph (USC00136891) is a weather station in Iowa, United States at 40.87 latitude and -95.57 longitude, 299 m (980 ft) above sea level.
  • The station reports from 1953 to 2026, 74 years of record.
  • 0 records set at Randolph still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Randolph set a daily record precipitation of 33.0 mm (1.3 in) on 30 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, 40.87 latitude, -95.57 longitude.
  • Elevation: 299 m (980 ft).
  • Period of record: 1953 to 2026, 74 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 Randolph, with 2026 drawn through them The band shows the record high and record low for each calendar day at Randolph. 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 Randolph. 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 Randolph, 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
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Juln/an/an/an/a
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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 Randolph by the year they were set 0 records at Randolph still stand. 00000000000
0 records at Randolph still stand.
Standing records at Randolph by the year they were set
Year setStanding records

All-Time Record Progression

4 new records
When Randolph set new all-time records 4 all-time records were set at Randolph between 25 December 2009 and 7 January 2010. Each dot is a new record. Record snow depth25 December 2009: Record snow depth 45.7 cm (18.0 in)3 January 2010: Record snow depth 53.3 cm (21.0 in)6 January 2010: Record snow depth 63.5 cm (25.0 in)7 January 2010: Record snow depth 73.7 cm (29.0 in)2010
4 all-time records were set at Randolph between 25 December 2009 and 7 January 2010. Each dot is a new record.
When Randolph set new all-time records
DateKindDetail
2009-12-25Record snow depthRecord snow depth 45.7 cm (18.0 in)
2010-01-03Record snow depthRecord snow depth 53.3 cm (21.0 in)
2010-01-06Record snow depthRecord snow depth 63.5 cm (25.0 in)
2010-01-07Record snow depthRecord snow depth 73.7 cm (29.0 in)

Wettest Day of Each Month

Jul: 226.8 mm (8.9 in)
Record daily precipitation for each month at Randolph The wettest day on record for each calendar month at Randolph. The most was 226.8 mm (8.9 in) on 26 July 1990. 0100200300 Jan: 26.7 mm (1.1 in), 9 January 2026 Jan Feb: 74.9 mm (2.9 in), 20 February 1954 Feb Mar: 57.2 mm (2.3 in), 14 March 2021 Mar Apr: 121.9 mm (4.8 in), 14 April 1955 Apr May: 143.5 mm (5.6 in), 6 May 2007 May Jun: 132.1 mm (5.2 in), 5 June 2008 Jun Jul: 226.8 mm (8.9 in), 26 July 1990 Jul Aug: 174.0 mm (6.9 in), 31 August 1962 Aug Sep: 142.7 mm (5.6 in), 9 September 1989 Sep Oct: 135.1 mm (5.3 in), 15 October 2007 Oct Nov: 48.8 mm (1.9 in), 30 November 1997 Nov Dec: 76.2 mm (3.0 in), 9 December 1954 Dec
The wettest day on record for each calendar month at Randolph. The most was 226.8 mm (8.9 in) on 26 July 1990.
Record daily precipitation for each month at Randolph
MonthRecord daily precipitation (mm)Date
Jan26.7 mm (1.1 in)9 January 2026
Feb74.9 mm (2.9 in)20 February 1954
Mar57.2 mm (2.3 in)14 March 2021
Apr121.9 mm (4.8 in)14 April 1955
May143.5 mm (5.6 in)6 May 2007
Jun132.1 mm (5.2 in)5 June 2008
Jul226.8 mm (8.9 in)26 July 1990
Aug174.0 mm (6.9 in)31 August 1962
Sep142.7 mm (5.6 in)9 September 1989
Oct135.1 mm (5.3 in)15 October 2007
Nov48.8 mm (1.9 in)30 November 1997
Dec76.2 mm (3.0 in)9 December 1954

Latest Records

20
Latest records at Randolph
DateStationRecordValueBeat old record byOld record stoodSignificance
30 September 2026Randolph, USdaily rain (Provisional)33.0 mm (1.3 in)11.2 mm (0.4 in)55 years30 of 100 (Routine)
25 September 2026Randolph, USdaily rain (Provisional)31.0 mm (1.2 in)5.6 mm (0.22 in)49 years24 of 100 (Routine)
11 June 2026Randolph, USdaily rain92.7 mm (3.6 in)32.0 mm (1.3 in)13 years32 of 100 (Routine)
7 March 2026Randolph, USdaily rain19.6 mm (0.8 in)1.6 mm (0.06 in)36 years18 of 100 (Routine)
6 March 2026Randolph, USdaily rain34.3 mm (1.4 in)2.8 mm (0.11 in)43 years22 of 100 (Routine)
9 January 2026Randolph, USmonthly rain26.7 mm (1.1 in)3.6 mm (0.14 in)1 year25 of 100 (Routine)
4 December 2025Randolph, USdaily snow depth (Tie)5.1 cm (2.0 in)tie52 years5 of 100 (Routine)
3 December 2025Randolph, USdaily snow depth (Tie)5.1 cm (2.0 in)tie20 years3 of 100 (Routine)
2 December 2025Randolph, USdaily snow depth (Tie)5.1 cm (2.0 in)tie51 years5 of 100 (Routine)
30 November 2025Randolph, USdaily snowfall5.1 cm (2.0 in)2.6 cm (1.0 in)51 years28 of 100 (Routine)
1 September 2025Randolph, USdaily rain52.8 mm (2.1 in)12.2 mm (0.5 in)46 years27 of 100 (Routine)
3 June 2025Randolph, USdaily rain27.4 mm (1.1 in)3.5 mm (0.14 in)44 years22 of 100 (Routine)
5 March 2025Randolph, USdaily snowfall7.6 cm (3.0 in)4.8 cm (1.9 in)22 years24 of 100 (Routine)
12 February 2025Randolph, USdaily snowfall10.2 cm (4.0 in)6.4 cm (2.5 in)6 years21 of 100 (Routine)
12 February 2025Randolph, USdaily rain6.9 mm (0.27 in)2.1 mm (0.08 in)32 years18 of 100 (Routine)
19 November 2024Randolph, USdaily rain30.0 mm (1.2 in)11.5 mm (0.5 in)32 years29 of 100 (Routine)
5 November 2024Randolph, USdaily rain15.2 mm (0.6 in)2.5 mm (0.10 in)45 years20 of 100 (Routine)
3 November 2024Randolph, USdaily rain19.1 mm (0.8 in)4.1 mm (0.16 in)26 years18 of 100 (Routine)
4 May 2024Randolph, USdaily rain29.5 mm (1.2 in)6.1 mm (0.24 in)17 years16 of 100 (Routine)
12 January 2024Randolph, USmonthly rain23.1 mm (0.9 in)1.5 mm (0.06 in)63 years20 of 100 (Routine)

Extremes by Year

1953 to 2026
Yearly extremes at Randolph: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)226.8 mm (8.9 in)199063.4 mm (2.5 in)74
Wettest five days (Rx5day)278.7 mm (11.0 in)199094.2 mm (3.7 in)74
Longest dry spell (CDD)49 days202425 days74

Wettest day (Rx1day)

Wettest day (Rx1day) at Randolph by year The wettest day of the year at Randolph, 1953 to 2026. The record is 226.8 mm (8.9 in) in 1990, marked on the chart; the median year is 63.4 mm (2.5 in). 01002003001960198020002020Record: 226.8 mm (8.9 in) in 1990
The wettest day of the year at Randolph, 1953 to 2026. The record is 226.8 mm (8.9 in) in 1990, marked on the chart; the median year is 63.4 mm (2.5 in).
Wettest day (Rx1day) at Randolph by year
YearWettest day (Rx1day)
195327.7 mm (1.1 in)
195476.2 mm (3.0 in)
1955121.9 mm (4.8 in)
195634.5 mm (1.4 in)
195757.4 mm (2.3 in)
195888.9 mm (3.5 in)
195948.8 mm (1.9 in)
196068.6 mm (2.7 in)
196145.7 mm (1.8 in)
1962174.0 mm (6.9 in)
196362.2 mm (2.4 in)
196470.1 mm (2.8 in)
196572.4 mm (2.9 in)
196647.0 mm (1.9 in)
196778.7 mm (3.1 in)
196836.8 mm (1.4 in)
196983.1 mm (3.3 in)
197030.5 mm (1.2 in)
197155.4 mm (2.2 in)
197252.3 mm (2.1 in)
197361.0 mm (2.4 in)
197497.8 mm (3.9 in)
1975101.6 mm (4.0 in)
197653.3 mm (2.1 in)
197720.3 mm (0.8 in)
197866.0 mm (2.6 in)
197969.9 mm (2.8 in)
198047.2 mm (1.9 in)
198155.9 mm (2.2 in)
198299.1 mm (3.9 in)
198357.7 mm (2.3 in)
198457.7 mm (2.3 in)
198566.3 mm (2.6 in)
198696.5 mm (3.8 in)
1987152.4 mm (6.0 in)
198848.8 mm (1.9 in)
1989142.7 mm (5.6 in)
1990226.8 mm (8.9 in)
199145.7 mm (1.8 in)
199253.8 mm (2.1 in)
199387.6 mm (3.4 in)
199463.2 mm (2.5 in)
199540.1 mm (1.6 in)
199661.0 mm (2.4 in)
199796.8 mm (3.8 in)
199849.5 mm (1.9 in)
199986.4 mm (3.4 in)
200054.4 mm (2.1 in)
200147.8 mm (1.9 in)
200248.3 mm (1.9 in)
200332.3 mm (1.3 in)
200461.0 mm (2.4 in)
200563.5 mm (2.5 in)
200676.2 mm (3.0 in)
2007143.5 mm (5.6 in)
2008132.1 mm (5.2 in)
200971.9 mm (2.8 in)
201073.7 mm (2.9 in)
201153.3 mm (2.1 in)
201291.9 mm (3.6 in)
201344.5 mm (1.8 in)
201467.6 mm (2.7 in)
2015174.0 mm (6.9 in)
2016107.4 mm (4.2 in)
201775.4 mm (3.0 in)
201870.6 mm (2.8 in)
201976.5 mm (3.0 in)
202039.4 mm (1.6 in)
202172.1 mm (2.8 in)
202235.6 mm (1.4 in)
202350.8 mm (2.0 in)
202440.6 mm (1.6 in)
202552.8 mm (2.1 in)
202692.7 mm (3.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Randolph by year The wettest five days of the year at Randolph, 1953 to 2026. The record is 278.7 mm (11.0 in) in 1990, marked on the chart; the median year is 94.2 mm (3.7 in). 01002003001960198020002020Record: 278.7 mm (11.0 in) in 1990
The wettest five days of the year at Randolph, 1953 to 2026. The record is 278.7 mm (11.0 in) in 1990, marked on the chart; the median year is 94.2 mm (3.7 in).
Wettest five days (Rx5day) at Randolph by year
YearWettest five days (Rx5day)
195350.3 mm (2.0 in)
195476.2 mm (3.0 in)
195576.2 mm (3.0 in)
195655.9 mm (2.2 in)
195767.8 mm (2.7 in)
195854.4 mm (2.1 in)
195987.1 mm (3.4 in)
196097.3 mm (3.8 in)
196141.7 mm (1.6 in)
1962182.4 mm (7.2 in)
1963111.7 mm (4.4 in)
1964118.9 mm (4.7 in)
1965129.6 mm (5.1 in)
196677.2 mm (3.0 in)
1967159.4 mm (6.3 in)
19682.5 mm (0.10 in)
196943.7 mm (1.7 in)
197013.0 mm (0.5 in)
1971124.5 mm (4.9 in)
197262.2 mm (2.4 in)
1973111.3 mm (4.4 in)
1974110.8 mm (4.4 in)
1975114.3 mm (4.5 in)
197698.5 mm (3.9 in)
197729.5 mm (1.2 in)
1978128.8 mm (5.1 in)
197986.6 mm (3.4 in)
1980108.7 mm (4.3 in)
198164.8 mm (2.6 in)
1982175.8 mm (6.9 in)
198383.6 mm (3.3 in)
1984117.6 mm (4.6 in)
198568.6 mm (2.7 in)
1986153.9 mm (6.1 in)
1987217.2 mm (8.6 in)
198856.3 mm (2.2 in)
1989211.1 mm (8.3 in)
1990278.7 mm (11.0 in)
199181.8 mm (3.2 in)
199284.0 mm (3.3 in)
1993175.3 mm (6.9 in)
199486.8 mm (3.4 in)
199559.7 mm (2.4 in)
1996101.9 mm (4.0 in)
1997116.1 mm (4.6 in)
199885.4 mm (3.4 in)
1999107.5 mm (4.2 in)
200066.1 mm (2.6 in)
200156.4 mm (2.2 in)
2002113.5 mm (4.5 in)
200363.1 mm (2.5 in)
200495.1 mm (3.7 in)
200572.5 mm (2.9 in)
2006123.0 mm (4.8 in)
2007200.0 mm (7.9 in)
2008166.4 mm (6.6 in)
200983.3 mm (3.3 in)
201086.4 mm (3.4 in)
201188.1 mm (3.5 in)
2012105.9 mm (4.2 in)
2013121.9 mm (4.8 in)
201493.2 mm (3.7 in)
2015211.0 mm (8.3 in)
2016111.3 mm (4.4 in)
2017134.1 mm (5.3 in)
2018150.2 mm (5.9 in)
2019146.7 mm (5.8 in)
202091.3 mm (3.6 in)
2021160.0 mm (6.3 in)
202270.1 mm (2.8 in)
202363.3 mm (2.5 in)
202465.5 mm (2.6 in)
202571.9 mm (2.8 in)
2026102.9 mm (4.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Randolph by year The longest dry spell of the year at Randolph, 1953 to 2026. The record is 49 days in 2024, marked on the chart; the median year is 25 days. 02040601960198020002020Record: 49 days in 2024
The longest dry spell of the year at Randolph, 1953 to 2026. The record is 49 days in 2024, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Randolph by year
YearLongest dry spell (CDD)
195311 days
195420 days
195526 days
195614 days
195716 days
195831 days
195911 days
19608 days
196110 days
196214 days
196327 days
196420 days
196528 days
196625 days
196722 days
196819 days
19693 days
19705 days
19713 days
19722 days
197320 days
197423 days
197517 days
197635 days
197721 days
197824 days
197935 days
198028 days
198131 days
198217 days
198325 days
198438 days
198541 days
198634 days
198728 days
198832 days
198936 days
199019 days
199123 days
199221 days
199324 days
199434 days
199529 days
199631 days
199720 days
199822 days
199925 days
200028 days
200123 days
200243 days
200321 days
200425 days
200529 days
200620 days
200733 days
200828 days
200916 days
201026 days
201123 days
201233 days
201315 days
201440 days
201523 days
201626 days
201729 days
201822 days
201920 days
202039 days
202131 days
202226 days
202327 days
202449 days
202542 days
202641 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

48 years, 1975 to 2025

A day with at least 63.7 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 247.4 mm (9.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Randolph: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years63.7 mm (2.5 in)
5 years93.0 mm (3.7 in)
10 years118.6 mm (4.7 in)
25 years160.1 mm (6.3 in)
50 years199.4 mm (7.9 in)Longer than the 48 years of record
100 years247.4 mm (9.7 in)Longer than the 48 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, 48 years of values from 1975 to 2025.

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: 226.8 mm (8.9 in) in 1990; 174.0 mm (6.9 in) in 2015; 152.4 mm (6.0 in) in 1987.

Download the Data

  • Data for Randolph standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Randolph 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-15).