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Built 2026-10-17 (17 October 2026)

Mc Cook 17 NNW Weather Records (USC00255311)

Record envelope, standing records and threshold days for Mc Cook 17 NNW (USC00255311), Nebraska, United States, with 52 years of record.

Key Facts for Mc Cook 17 NNW

  • Mc Cook 17 NNW (USC00255311) is a weather station in Nebraska, United States at 40.44 latitude and -100.70 longitude, 843 m (2,766 ft) above sea level.
  • The station reports from 1975 to 2026, 52 years of record.
  • 0 records set at Mc Cook 17 NNW still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Mc Cook 17 NNW set a daily record precipitation of 16.0 mm (0.6 in) on 21 August 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Nebraska, United States, 40.44 latitude, -100.70 longitude.
  • Elevation: 843 m (2,766 ft).
  • Period of record: 1975 to 2026, 52 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 Mc Cook 17 NNW, with 2026 drawn through them The band shows the record high and record low for each calendar day at Mc Cook 17 NNW. 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 Mc Cook 17 NNW. 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 Mc Cook 17 NNW, 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 Mc Cook 17 NNW by the year they were set 0 records at Mc Cook 17 NNW still stand. 00000000000
0 records at Mc Cook 17 NNW still stand.
Standing records at Mc Cook 17 NNW by the year they were set
Year setStanding records

All-Time Record Progression

1 new records
When Mc Cook 17 NNW set new all-time records 1 all-time records were set at Mc Cook 17 NNW between 3 February 2016 and 3 February 2016. Each dot is a new record. Record snow depth3 February 2016: Record snow depth 40.6 cm (16.0 in)
1 all-time records were set at Mc Cook 17 NNW between 3 February 2016 and 3 February 2016. Each dot is a new record.
When Mc Cook 17 NNW set new all-time records
DateKindDetail
2016-02-03Record snow depthRecord snow depth 40.6 cm (16.0 in)

Wettest Day of Each Month

Jun: 112.8 mm (4.4 in)
Record daily precipitation for each month at Mc Cook 17 NNW The wettest day on record for each calendar month at Mc Cook 17 NNW. The most was 112.8 mm (4.4 in) on 25 June 1989. 050100150 Jan: 19.8 mm (0.8 in), 20 January 1990 Jan Feb: 18.5 mm (0.7 in), 3 February 2016 Feb Mar: 57.2 mm (2.3 in), 5 March 1983 Mar Apr: 64.5 mm (2.5 in), 17 April 2016 Apr May: 72.9 mm (2.9 in), 24 May 2008 May Jun: 112.8 mm (4.4 in), 25 June 1989 Jun Jul: 61.0 mm (2.4 in), 28 July 1979 Jul Aug: 93.5 mm (3.7 in), 11 August 1999 Aug Sep: 51.6 mm (2.0 in), 18 September 1996 Sep Oct: 52.1 mm (2.1 in), 3 October 2017 Oct Nov: 42.7 mm (1.7 in), 16 November 2015 Nov Dec: 28.7 mm (1.1 in), 30 December 2006 Dec
The wettest day on record for each calendar month at Mc Cook 17 NNW. The most was 112.8 mm (4.4 in) on 25 June 1989.
Record daily precipitation for each month at Mc Cook 17 NNW
MonthRecord daily precipitation (mm)Date
Jan19.8 mm (0.8 in)20 January 1990
Feb18.5 mm (0.7 in)3 February 2016
Mar57.2 mm (2.3 in)5 March 1983
Apr64.5 mm (2.5 in)17 April 2016
May72.9 mm (2.9 in)24 May 2008
Jun112.8 mm (4.4 in)25 June 1989
Jul61.0 mm (2.4 in)28 July 1979
Aug93.5 mm (3.7 in)11 August 1999
Sep51.6 mm (2.0 in)18 September 1996
Oct52.1 mm (2.1 in)3 October 2017
Nov42.7 mm (1.7 in)16 November 2015
Dec28.7 mm (1.1 in)30 December 2006

Latest Records

20
Latest records at Mc Cook 17 NNW
DateStationRecordValueBeat old record byOld record stoodSignificance
21 August 2026Mc Cook 17 NNW, USdaily rain (Provisional)16.0 mm (0.6 in)2.0 mm (0.08 in)41 years18 of 100 (Routine)
15 August 2026Mc Cook 17 NNW, USdaily rain27.2 mm (1.1 in)4.3 mm (0.17 in)16 years13 of 100 (Routine)
3 July 2026Mc Cook 17 NNW, USdaily rain45.7 mm (1.8 in)21.6 mm (0.9 in)49 years39 of 100 (Notable)
17 October 2025Mc Cook 17 NNW, USdaily rain30.2 mm (1.2 in)18.8 mm (0.7 in)40 years36 of 100 (Notable)
17 September 2025Mc Cook 17 NNW, USdaily rain37.1 mm (1.5 in)32.8 mm (1.3 in)39 years53 of 100 (Notable)
29 May 2025Mc Cook 17 NNW, USdaily rain19.8 mm (0.8 in)2.5 mm (0.10 in)7 years9 of 100 (Routine)
4 April 2025Mc Cook 17 NNW, USdaily rain31.8 mm (1.3 in)22.9 mm (0.9 in)48 years39 of 100 (Notable)
19 February 2025Mc Cook 17 NNW, USdaily snowfall15.2 cm (6.0 in)12.7 cm (5.0 in)15 years37 of 100 (Notable)
15 February 2025Mc Cook 17 NNW, USdaily snowfall (Tie)5.1 cm (2.0 in)tie32 years3 of 100 (Routine)
13 November 2024Mc Cook 17 NNW, USdaily rain5.1 mm (0.20 in)2.1 mm (0.08 in)31 years17 of 100 (Routine)
9 November 2024Mc Cook 17 NNW, USdaily rain33.0 mm (1.3 in)21.6 mm (0.9 in)41 years47 of 100 (Notable)
22 August 2024Mc Cook 17 NNW, USdaily rain (Tie)27.9 mm (1.1 in)tie31 years3 of 100 (Routine)
26 March 2024Mc Cook 17 NNW, USdaily snow depth (Tie)10.2 cm (4.0 in)tie1 year1 of 100 (Routine)
25 March 2024Mc Cook 17 NNW, USdaily snowfall10.2 cm (4.0 in)2.6 cm (1.0 in)28 years17 of 100 (Routine)
25 March 2024Mc Cook 17 NNW, USdaily snow depth (Tie)10.2 cm (4.0 in)tie37 years4 of 100 (Routine)
8 March 2024Mc Cook 17 NNW, USdaily snowfall12.7 cm (5.0 in)7.6 cm (3.0 in)44 years31 of 100 (Routine)
8 March 2024Mc Cook 17 NNW, USdaily rain (Tie)13.2 mm (0.5 in)tie24 years3 of 100 (Routine)
12 January 2024Mc Cook 17 NNW, USdaily snowfall2.5 cm (1.0 in)2.5 cm (1.0 in)48 years20 of 100 (Routine)
9 January 2024Mc Cook 17 NNW, USdaily snowfall7.6 cm (3.0 in)5.1 cm (2.0 in)38 years26 of 100 (Routine)
25 November 2023Mc Cook 17 NNW, USdaily snowfall10.2 cm (4.0 in)2.6 cm (1.0 in)4 years11 of 100 (Routine)

Extremes by Year

1975 to 2026
Yearly extremes at Mc Cook 17 NNW: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)112.8 mm (4.4 in)198950.8 mm (2.0 in)52
Wettest five days (Rx5day)137.7 mm (5.4 in)198968.3 mm (2.7 in)52
Longest dry spell (CDD)91 days202639 days52

Wettest day (Rx1day)

Wettest day (Rx1day) at Mc Cook 17 NNW by year The wettest day of the year at Mc Cook 17 NNW, 1975 to 2026. The record is 112.8 mm (4.4 in) in 1989, marked on the chart; the median year is 50.8 mm (2.0 in). 25507510012519801990200020102020Record: 112.8 mm (4.4 in) in 1989
The wettest day of the year at Mc Cook 17 NNW, 1975 to 2026. The record is 112.8 mm (4.4 in) in 1989, marked on the chart; the median year is 50.8 mm (2.0 in).
Wettest day (Rx1day) at Mc Cook 17 NNW by year
YearWettest day (Rx1day)
197567.3 mm (2.6 in)
197649.8 mm (2.0 in)
197762.2 mm (2.4 in)
197829.7 mm (1.2 in)
197961.0 mm (2.4 in)
198050.8 mm (2.0 in)
198137.1 mm (1.5 in)
198256.4 mm (2.2 in)
198357.2 mm (2.3 in)
198443.2 mm (1.7 in)
198550.8 mm (2.0 in)
198645.7 mm (1.8 in)
198778.7 mm (3.1 in)
198871.6 mm (2.8 in)
1989112.8 mm (4.4 in)
199027.9 mm (1.1 in)
199153.3 mm (2.1 in)
199260.5 mm (2.4 in)
199342.4 mm (1.7 in)
199443.7 mm (1.7 in)
199562.5 mm (2.5 in)
199651.6 mm (2.0 in)
199750.8 mm (2.0 in)
199830.5 mm (1.2 in)
199993.5 mm (3.7 in)
200048.8 mm (1.9 in)
200139.6 mm (1.6 in)
200250.3 mm (2.0 in)
200343.4 mm (1.7 in)
200432.0 mm (1.3 in)
200539.9 mm (1.6 in)
200653.6 mm (2.1 in)
200749.0 mm (1.9 in)
200872.9 mm (2.9 in)
200948.8 mm (1.9 in)
201055.1 mm (2.2 in)
201164.3 mm (2.5 in)
201227.2 mm (1.1 in)
201353.1 mm (2.1 in)
201452.1 mm (2.1 in)
201549.5 mm (1.9 in)
201664.5 mm (2.5 in)
201752.1 mm (2.1 in)
201839.9 mm (1.6 in)
201944.7 mm (1.8 in)
202034.3 mm (1.4 in)
202150.8 mm (2.0 in)
202227.9 mm (1.1 in)
202369.3 mm (2.7 in)
202434.3 mm (1.4 in)
202562.2 mm (2.4 in)
202645.7 mm (1.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Mc Cook 17 NNW by year The wettest five days of the year at Mc Cook 17 NNW, 1975 to 2026. The record is 137.7 mm (5.4 in) in 1989, marked on the chart; the median year is 68.3 mm (2.7 in). 05010015019801990200020102020Record: 137.7 mm (5.4 in) in 1989
The wettest five days of the year at Mc Cook 17 NNW, 1975 to 2026. The record is 137.7 mm (5.4 in) in 1989, marked on the chart; the median year is 68.3 mm (2.7 in).
Wettest five days (Rx5day) at Mc Cook 17 NNW by year
YearWettest five days (Rx5day)
197597.5 mm (3.8 in)
197676.2 mm (3.0 in)
197799.0 mm (3.9 in)
197840.3 mm (1.6 in)
197978.8 mm (3.1 in)
1980118.6 mm (4.7 in)
198178.7 mm (3.1 in)
198260.9 mm (2.4 in)
198380.6 mm (3.2 in)
198468.7 mm (2.7 in)
198556.4 mm (2.2 in)
198658.9 mm (2.3 in)
1987111.7 mm (4.4 in)
198880.8 mm (3.2 in)
1989137.7 mm (5.4 in)
199043.6 mm (1.7 in)
199163.6 mm (2.5 in)
199265.6 mm (2.6 in)
1993121.4 mm (4.8 in)
199444.0 mm (1.7 in)
199564.7 mm (2.5 in)
1996102.6 mm (4.0 in)
199757.2 mm (2.3 in)
199841.4 mm (1.6 in)
199995.8 mm (3.8 in)
200058.7 mm (2.3 in)
200169.6 mm (2.7 in)
200252.6 mm (2.1 in)
200347.7 mm (1.9 in)
200467.9 mm (2.7 in)
2005104.6 mm (4.1 in)
200653.6 mm (2.1 in)
2007101.4 mm (4.0 in)
2008123.9 mm (4.9 in)
200964.0 mm (2.5 in)
2010129.5 mm (5.1 in)
201193.2 mm (3.7 in)
201237.6 mm (1.5 in)
201354.6 mm (2.1 in)
201495.1 mm (3.7 in)
201565.4 mm (2.6 in)
2016105.2 mm (4.1 in)
201771.4 mm (2.8 in)
201865.3 mm (2.6 in)
201994.0 mm (3.7 in)
202054.6 mm (2.1 in)
202171.6 mm (2.8 in)
202249.7 mm (2.0 in)
2023114.0 mm (4.5 in)
202458.4 mm (2.3 in)
202567.3 mm (2.6 in)
202648.5 mm (1.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Mc Cook 17 NNW by year The longest dry spell of the year at Mc Cook 17 NNW, 1975 to 2026. The record is 91 days in 2026, marked on the chart; the median year is 39 days. 2040608010019801990200020102020Record: 91 days in 2026
The longest dry spell of the year at Mc Cook 17 NNW, 1975 to 2026. The record is 91 days in 2026, marked on the chart; the median year is 39 days.
Longest dry spell (CDD) at Mc Cook 17 NNW by year
YearLongest dry spell (CDD)
197539 days
197650 days
197774 days
197857 days
197947 days
198057 days
198146 days
198234 days
198334 days
198430 days
198526 days
198635 days
198733 days
198849 days
198965 days
199045 days
199148 days
199235 days
199323 days
199445 days
199560 days
199651 days
199734 days
199838 days
199954 days
200049 days
200125 days
200247 days
200338 days
200430 days
200537 days
200662 days
200739 days
200839 days
200940 days
201034 days
201127 days
201250 days
201331 days
201462 days
201532 days
201632 days
201733 days
201823 days
201927 days
202043 days
202143 days
202242 days
202329 days
202448 days
202537 days
202691 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

50 years, 1976 to 2025

A day with at least 49.4 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 99.2 mm (3.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Mc Cook 17 NNW: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years49.4 mm (1.9 in)
5 years63.5 mm (2.5 in)
10 years72.5 mm (2.9 in)
25 years83.5 mm (3.3 in)
50 years91.5 mm (3.6 in)
100 years99.2 mm (3.9 in)Longer than the 50 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, 50 years of values from 1976 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: 112.8 mm (4.4 in) in 1989; 93.5 mm (3.7 in) in 1999; 78.7 mm (3.1 in) in 1987.

Download the Data

  • Data for Mc Cook 17 NNW standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Mc Cook 17 NNW 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).