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Data as of 2025-12-31
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Built 2026-10-15 (15 October 2026)

Westport 2 NW Weather Records (USC00399138)

Record envelope, standing records and threshold days for Westport 2 NW (USC00399138), South Dakota, United States, with 37 years of record.

Key Facts for Westport 2 NW

  • Westport 2 NW (USC00399138) is a weather station in South Dakota, United States at 45.68 latitude and -98.53 longitude, 421 m (1,381 ft) above sea level.
  • The station reports from 1990 to 2026, 37 years of record.
  • 0 records set at Westport 2 NW still stand.
  • Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

  • Location: South Dakota, United States, 45.68 latitude, -98.53 longitude.
  • Elevation: 421 m (1,381 ft).
  • Period of record: 1990 to 2026, 37 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Westport 2 NW, with 2026 drawn through them The band shows the record high and record low for each calendar day at Westport 2 NW. 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 Westport 2 NW. 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 Westport 2 NW, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
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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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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 Westport 2 NW by the year they were set 0 records at Westport 2 NW still stand. 00000000000
0 records at Westport 2 NW still stand.
Standing records at Westport 2 NW by the year they were set
Year setStanding records

Wettest Day of Each Month

Aug: 123.2 mm (4.9 in)
Record daily precipitation for each month at Westport 2 NW The wettest day on record for each calendar month at Westport 2 NW. The most was 123.2 mm (4.9 in) on 6 August 2015. 050100150 Jan: 14.0 mm (0.6 in), 8 January 1992 Jan Feb: 19.8 mm (0.8 in), 18 February 1991 Feb Mar: 25.4 mm (1.0 in), 21 March 2008 Mar Apr: 44.2 mm (1.7 in), 23 April 2022 Apr May: 115.3 mm (4.5 in), 6 May 2007 May Jun: 79.2 mm (3.1 in), 22 June 2011 Jun Jul: 77.2 mm (3.0 in), 17 July 1993 Jul Aug: 123.2 mm (4.9 in), 6 August 2015 Aug Sep: 64.5 mm (2.5 in), 9 September 2009 Sep Oct: 42.7 mm (1.7 in), 15 October 2013 Oct Nov: 31.8 mm (1.3 in), 29 November 1991 Nov Dec: 41.9 mm (1.6 in), 26 December 2023 Dec
The wettest day on record for each calendar month at Westport 2 NW. The most was 123.2 mm (4.9 in) on 6 August 2015.
Record daily precipitation for each month at Westport 2 NW
MonthRecord daily precipitation (mm)Date
Jan14.0 mm (0.6 in)8 January 1992
Feb19.8 mm (0.8 in)18 February 1991
Mar25.4 mm (1.0 in)21 March 2008
Apr44.2 mm (1.7 in)23 April 2022
May115.3 mm (4.5 in)6 May 2007
Jun79.2 mm (3.1 in)22 June 2011
Jul77.2 mm (3.0 in)17 July 1993
Aug123.2 mm (4.9 in)6 August 2015
Sep64.5 mm (2.5 in)9 September 2009
Oct42.7 mm (1.7 in)15 October 2013
Nov31.8 mm (1.3 in)29 November 1991
Dec41.9 mm (1.6 in)26 December 2023

Latest Records

0

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

Extremes by Year

1990 to 2026
Yearly extremes at Westport 2 NW: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)123.2 mm (4.9 in)201555.9 mm (2.2 in)29
Wettest five days (Rx5day)166.1 mm (6.5 in)201582.6 mm (3.3 in)29
Longest dry spell (CDD)80 days200832 days29

Wettest day (Rx1day)

Wettest day (Rx1day) at Westport 2 NW by year The wettest day of the year at Westport 2 NW, 1990 to 2026. The record is 123.2 mm (4.9 in) in 2015, marked on the chart; the median year is 55.9 mm (2.2 in). 2550751001251990200020102020Record: 123.2 mm (4.9 in) in 2015
The wettest day of the year at Westport 2 NW, 1990 to 2026. The record is 123.2 mm (4.9 in) in 2015, marked on the chart; the median year is 55.9 mm (2.2 in).
Wettest day (Rx1day) at Westport 2 NW by year
YearWettest day (Rx1day)
199053.6 mm (2.1 in)
199158.4 mm (2.3 in)
199252.3 mm (2.1 in)
199377.2 mm (3.0 in)
199455.9 mm (2.2 in)
199538.1 mm (1.5 in)
199658.4 mm (2.3 in)
200566.0 mm (2.6 in)
200634.0 mm (1.3 in)
2007115.3 mm (4.5 in)
200858.7 mm (2.3 in)
200976.2 mm (3.0 in)
201049.8 mm (2.0 in)
201179.2 mm (3.1 in)
201250.8 mm (2.0 in)
201342.7 mm (1.7 in)
201455.9 mm (2.2 in)
2015123.2 mm (4.9 in)
201640.9 mm (1.6 in)
201727.9 mm (1.1 in)
201844.5 mm (1.8 in)
201961.5 mm (2.4 in)
202061.2 mm (2.4 in)
202141.7 mm (1.6 in)
202248.0 mm (1.9 in)
202372.6 mm (2.9 in)
202458.4 mm (2.3 in)
202550.0 mm (2.0 in)
202668.1 mm (2.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Westport 2 NW by year The wettest five days of the year at Westport 2 NW, 1990 to 2026. The record is 166.1 mm (6.5 in) in 2015, marked on the chart; the median year is 82.6 mm (3.3 in). 0501001502001990200020102020Record: 166.1 mm (6.5 in) in 2015
The wettest five days of the year at Westport 2 NW, 1990 to 2026. The record is 166.1 mm (6.5 in) in 2015, marked on the chart; the median year is 82.6 mm (3.3 in).
Wettest five days (Rx5day) at Westport 2 NW by year
YearWettest five days (Rx5day)
199073.9 mm (2.9 in)
199166.6 mm (2.6 in)
199257.4 mm (2.3 in)
1993116.6 mm (4.6 in)
199489.7 mm (3.5 in)
199582.6 mm (3.3 in)
199671.1 mm (2.8 in)
200583.5 mm (3.3 in)
200666.8 mm (2.6 in)
2007143.2 mm (5.6 in)
200883.3 mm (3.3 in)
2009106.7 mm (4.2 in)
201095.2 mm (3.7 in)
201184.9 mm (3.3 in)
201254.6 mm (2.1 in)
201374.1 mm (2.9 in)
201465.1 mm (2.6 in)
2015166.1 mm (6.5 in)
201668.5 mm (2.7 in)
201749.3 mm (1.9 in)
201852.9 mm (2.1 in)
2019149.1 mm (5.9 in)
202085.6 mm (3.4 in)
202183.6 mm (3.3 in)
202283.0 mm (3.3 in)
202372.6 mm (2.9 in)
202458.9 mm (2.3 in)
202572.0 mm (2.8 in)
202685.8 mm (3.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Westport 2 NW by year The longest dry spell of the year at Westport 2 NW, 1990 to 2026. The record is 80 days in 2008, marked on the chart; the median year is 32 days. 0204060801990200020102020Record: 80 days in 2008
The longest dry spell of the year at Westport 2 NW, 1990 to 2026. The record is 80 days in 2008, marked on the chart; the median year is 32 days.
Longest dry spell (CDD) at Westport 2 NW by year
YearLongest dry spell (CDD)
199045 days
199148 days
199238 days
199320 days
199418 days
199523 days
199630 days
200526 days
200641 days
200730 days
200880 days
200926 days
201029 days
201129 days
201242 days
201328 days
201433 days
201540 days
201632 days
201730 days
201834 days
201926 days
202053 days
202155 days
202225 days
202335 days
202442 days
202533 days
202631 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 Westport 2 NW standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Westport 2 NW 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).