Daily records
Page built 2026-10-19
Data as of 2025-12-31
Search
Built 2026-10-19 (19 October 2026)

Merrill Weather Records (USC00135414)

Record envelope, standing records and threshold days for Merrill (USC00135414), Iowa, United States, with 88 years of record.

Key Facts for Merrill

  • Merrill (USC00135414) is a weather station in Iowa, United States at 42.72 latitude and -96.24 longitude, 352 m (1,154 ft) above sea level.
  • The station reports from 1907 to 1994, 88 years of record.
  • 0 records set at Merrill 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, 42.72 latitude, -96.24 longitude.
  • Elevation: 352 m (1,154 ft).
  • Period of record: 1907 to 1994, 88 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Merrill, with 2026 drawn through them The band shows the record high and record low for each calendar day at Merrill. 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 Merrill. 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 Merrill, 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 Merrill by the year they were set 0 records at Merrill still stand. 00000000000
0 records at Merrill still stand.
Standing records at Merrill by the year they were set
Year setStanding records

Wettest Day of Each Month

Jul: 142.2 mm (5.6 in)
Record daily precipitation for each month at Merrill The wettest day on record for each calendar month at Merrill. The most was 142.2 mm (5.6 in) on 10 July 1909. 050100150 Jan: 16.3 mm (0.6 in), 20 January 1990 Jan Feb: 18.0 mm (0.7 in), 21 February 1993 Feb Mar: 31.8 mm (1.3 in), 22 March 1979 Mar Apr: 36.6 mm (1.4 in), 20 April 1993 Apr May: 107.7 mm (4.2 in), 19 May 1990 May Jun: 101.6 mm (4.0 in), 26 June 1911 Jun Jul: 142.2 mm (5.6 in), 10 July 1909 Jul Aug: 88.9 mm (3.5 in), 22 August 1988 Aug Sep: 83.8 mm (3.3 in), 11 September 1949 Sep Oct: 103.9 mm (4.1 in), 30 October 1979 Oct Nov: 26.4 mm (1.0 in), 1 November 1991 Nov Dec: 22.6 mm (0.9 in), 27 December 1982 Dec
The wettest day on record for each calendar month at Merrill. The most was 142.2 mm (5.6 in) on 10 July 1909.
Record daily precipitation for each month at Merrill
MonthRecord daily precipitation (mm)Date
Jan16.3 mm (0.6 in)20 January 1990
Feb18.0 mm (0.7 in)21 February 1993
Mar31.8 mm (1.3 in)22 March 1979
Apr36.6 mm (1.4 in)20 April 1993
May107.7 mm (4.2 in)19 May 1990
Jun101.6 mm (4.0 in)26 June 1911
Jul142.2 mm (5.6 in)10 July 1909
Aug88.9 mm (3.5 in)22 August 1988
Sep83.8 mm (3.3 in)11 September 1949
Oct103.9 mm (4.1 in)30 October 1979
Nov26.4 mm (1.0 in)1 November 1991
Dec22.6 mm (0.9 in)27 December 1982

Latest Records

0

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

Extremes by Year

1907 to 1994
Yearly extremes at Merrill: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)142.2 mm (5.6 in)190944.2 mm (1.7 in)48
Wettest five days (Rx5day)196.8 mm (7.7 in)190970.3 mm (2.8 in)41
Longest dry spell (CDD)37 days199417 days41

Wettest day (Rx1day)

Wettest day (Rx1day) at Merrill by year The wettest day of the year at Merrill, 1907 to 1994. The record is 142.2 mm (5.6 in) in 1909, marked on the chart; the median year is 44.2 mm (1.7 in). 0501001501920194019601980Record: 142.2 mm (5.6 in) in 1909
The wettest day of the year at Merrill, 1907 to 1994. The record is 142.2 mm (5.6 in) in 1909, marked on the chart; the median year is 44.2 mm (1.7 in).
Wettest day (Rx1day) at Merrill by year
YearWettest day (Rx1day)
190730.0 mm (1.2 in)
190852.1 mm (2.1 in)
1909142.2 mm (5.6 in)
191050.8 mm (2.0 in)
1911101.6 mm (4.0 in)
191250.8 mm (2.0 in)
191348.3 mm (1.9 in)
191451.8 mm (2.0 in)
191570.6 mm (2.8 in)
191648.3 mm (1.9 in)
191741.9 mm (1.6 in)
191835.1 mm (1.4 in)
191952.1 mm (2.1 in)
192034.3 mm (1.4 in)
192132.5 mm (1.3 in)
192240.4 mm (1.6 in)
192338.1 mm (1.5 in)
192436.8 mm (1.4 in)
192562.5 mm (2.5 in)
192642.7 mm (1.7 in)
192738.1 mm (1.5 in)
192844.2 mm (1.7 in)
192949.5 mm (1.9 in)
193043.2 mm (1.7 in)
193129.0 mm (1.1 in)
193290.2 mm (3.6 in)
193317.8 mm (0.7 in)
194133.0 mm (1.3 in)
194229.2 mm (1.1 in)
194340.6 mm (1.6 in)
194450.8 mm (2.0 in)
194549.8 mm (2.0 in)
194722.9 mm (0.9 in)
194983.8 mm (3.3 in)
197626.9 mm (1.1 in)
197888.9 mm (3.5 in)
1979103.9 mm (4.1 in)
198044.2 mm (1.7 in)
19818.9 mm (0.35 in)
198222.6 mm (0.9 in)
198715.2 mm (0.6 in)
198888.9 mm (3.5 in)
198972.9 mm (2.9 in)
1990107.7 mm (4.2 in)
199154.4 mm (2.1 in)
199252.1 mm (2.1 in)
199337.8 mm (1.5 in)
199436.6 mm (1.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Merrill by year The wettest five days of the year at Merrill, 1907 to 1994. The record is 196.8 mm (7.7 in) in 1909, marked on the chart; the median year is 70.3 mm (2.8 in). 0501001502001920194019601980Record: 196.8 mm (7.7 in) in 1909
The wettest five days of the year at Merrill, 1907 to 1994. The record is 196.8 mm (7.7 in) in 1909, marked on the chart; the median year is 70.3 mm (2.8 in).
Wettest five days (Rx5day) at Merrill by year
YearWettest five days (Rx5day)
190768.7 mm (2.7 in)
190899.2 mm (3.9 in)
1909196.8 mm (7.7 in)
191083.8 mm (3.3 in)
1911104.1 mm (4.1 in)
191254.8 mm (2.2 in)
191357.2 mm (2.3 in)
1914113.5 mm (4.5 in)
1915105.2 mm (4.1 in)
191652.1 mm (2.1 in)
191772.8 mm (2.9 in)
191894.0 mm (3.7 in)
191978.5 mm (3.1 in)
192052.0 mm (2.0 in)
192139.3 mm (1.5 in)
192295.0 mm (3.7 in)
192370.3 mm (2.8 in)
192469.3 mm (2.7 in)
192577.7 mm (3.1 in)
192674.3 mm (2.9 in)
192758.7 mm (2.3 in)
192865.6 mm (2.6 in)
192961.7 mm (2.4 in)
1930116.9 mm (4.6 in)
193140.4 mm (1.6 in)
1932109.8 mm (4.3 in)
193332.5 mm (1.3 in)
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1947n/a
1949n/a
197647.2 mm (1.9 in)
1978123.2 mm (4.9 in)
1979106.7 mm (4.2 in)
198051.3 mm (2.0 in)
19818.9 mm (0.35 in)
198227.4 mm (1.1 in)
198715.2 mm (0.6 in)
198895.5 mm (3.8 in)
198998.0 mm (3.9 in)
199041.9 mm (1.6 in)
1991110.5 mm (4.4 in)
199296.1 mm (3.8 in)
199352.8 mm (2.1 in)
199452.3 mm (2.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Merrill by year The longest dry spell of the year at Merrill, 1907 to 1994. The record is 37 days in 1994, marked on the chart; the median year is 17 days. 0102030401920194019601980Record: 37 days in 1994
The longest dry spell of the year at Merrill, 1907 to 1994. The record is 37 days in 1994, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Merrill by year
YearLongest dry spell (CDD)
190720 days
19089 days
190913 days
191025 days
191119 days
191222 days
191311 days
191419 days
191511 days
191612 days
191713 days
191810 days
191912 days
19207 days
192116 days
192212 days
192311 days
192413 days
192516 days
192616 days
192713 days
192817 days
192917 days
193025 days
193119 days
193214 days
193330 days
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1947n/a
1949n/a
197613 days
197820 days
197935 days
198031 days
198130 days
198227 days
198713 days
198831 days
198929 days
199019 days
199124 days
199229 days
199330 days
199437 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 Merrill standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Merrill 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).