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Mc Mechen Dam 13 Weather Records (USC00465847)

Record envelope, standing records and threshold days for Mc Mechen Dam 13 (USC00465847), West Virginia, United States, with 43 years of record.

Key Facts for Mc Mechen Dam 13

  • Mc Mechen Dam 13 (USC00465847) is a weather station in West Virginia, United States at 39.98 latitude and -80.73 longitude, 201 m (659 ft) above sea level.
  • The station reports from 1933 to 1975, 43 years of record.
  • 60 records set at Mc Mechen Dam 13 still stand.
  • Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.
  • Mc Mechen Dam 13 set a daily record precipitation of 21.1 mm (0.8 in) on 8 March 1975.

About the Station

  • Location: West Virginia, United States, 39.98 latitude, -80.73 longitude.
  • Elevation: 201 m (659 ft).
  • Period of record: 1933 to 1975, 43 years.
  • Eligible elements: prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Mc Mechen Dam 13, with 2026 drawn through them The band shows the record high and record low for each calendar day at Mc Mechen Dam 13. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 10131518202325 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Mc Mechen Dam 13. 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 Mechen Dam 13, 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
Jun22.8 C (73.0 F)n/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

60 standing records
Standing records at Mc Mechen Dam 13 by the year they were set 60 records at Mc Mechen Dam 13 still stand. 1971 holds the most, with 60. 02040601971: 601971
60 records at Mc Mechen Dam 13 still stand. 1971 holds the most, with 60.
Standing records at Mc Mechen Dam 13 by the year they were set
Year setStanding records
197160

All-Time Record Progression

1 new records
When Mc Mechen Dam 13 set new all-time records 1 all-time records were set at Mc Mechen Dam 13 between 5 July 1966 and 5 July 1966. Each dot is a new record. Record daily precipitation5 July 1966: Record daily precipitation 87.6 mm (3.4 in)
1 all-time records were set at Mc Mechen Dam 13 between 5 July 1966 and 5 July 1966. Each dot is a new record.
When Mc Mechen Dam 13 set new all-time records
DateKindDetail
1966-07-05Record daily precipitationRecord daily precipitation 87.6 mm (3.4 in)

Wettest Day of Each Month

Jul: 87.6 mm (3.4 in)
Record daily precipitation for each month at Mc Mechen Dam 13 The wettest day on record for each calendar month at Mc Mechen Dam 13. The most was 87.6 mm (3.4 in) on 5 July 1966. 0255075100 Jan: 53.8 mm (2.1 in), 15 January 1951 Jan Feb: 46.7 mm (1.8 in), 23 February 1935 Feb Mar: 66.3 mm (2.6 in), 5 March 1963 Mar Apr: 51.1 mm (2.0 in), 26 April 1961 Apr May: 79.8 mm (3.1 in), 24 May 1940 May Jun: 64.0 mm (2.5 in), 11 June 1963 Jun Jul: 87.6 mm (3.4 in), 5 July 1966 Jul Aug: 71.6 mm (2.8 in), 1 August 1968 Aug Sep: 67.3 mm (2.6 in), 8 September 1934 Sep Oct: 80.5 mm (3.2 in), 16 October 1954 Oct Nov: 40.9 mm (1.6 in), 10 November 1962 Nov Dec: 41.7 mm (1.6 in), 30 December 1942 Dec
The wettest day on record for each calendar month at Mc Mechen Dam 13. The most was 87.6 mm (3.4 in) on 5 July 1966.
Record daily precipitation for each month at Mc Mechen Dam 13
MonthRecord daily precipitation (mm)Date
Jan53.8 mm (2.1 in)15 January 1951
Feb46.7 mm (1.8 in)23 February 1935
Mar66.3 mm (2.6 in)5 March 1963
Apr51.1 mm (2.0 in)26 April 1961
May79.8 mm (3.1 in)24 May 1940
Jun64.0 mm (2.5 in)11 June 1963
Jul87.6 mm (3.4 in)5 July 1966
Aug71.6 mm (2.8 in)1 August 1968
Sep67.3 mm (2.6 in)8 September 1934
Oct80.5 mm (3.2 in)16 October 1954
Nov40.9 mm (1.6 in)10 November 1962
Dec41.7 mm (1.6 in)30 December 1942

Period of Record Coverage

1971 to 1971
Days with data per year at Mc Mechen Dam 13 1 years of record at Mc Mechen Dam 13, 1971 to 1971. 1 years have data for under 90 percent of days and are left out of rankings: 1971. 1971: 30 of 365 days
1 years of record at Mc Mechen Dam 13, 1971 to 1971. 1 years have data for under 90 percent of days and are left out of rankings: 1971.
Days with data per year at Mc Mechen Dam 13
YearDays with dataShare of yearComplete
1971308%No

Latest Records

20
Latest records at Mc Mechen Dam 13
DateStationRecordValueBeat old record byOld record stoodSignificance
8 March 1975Mc Mechen Dam 13, USdaily rain21.1 mm (0.8 in)1.0 mm (0.04 in)18 years10 of 100 (Routine)
24 February 1975Mc Mechen Dam 13, USdaily rain (Tie)43.7 mm (1.7 in)tie12 years1 of 100 (Routine)
21 November 1974Mc Mechen Dam 13, USdaily rain9.9 mm (0.39 in)2.3 mm (0.09 in)4 years8 of 100 (Routine)
1 September 1974Mc Mechen Dam 13, USdaily rain33.0 mm (1.3 in)10.1 mm (0.4 in)8 years15 of 100 (Routine)
31 August 1974Mc Mechen Dam 13, USdaily rain33.0 mm (1.3 in)8.9 mm (0.35 in)24 years17 of 100 (Routine)
30 August 1974Mc Mechen Dam 13, USdaily rain34.0 mm (1.3 in)30.7 mm (1.2 in)37 years38 of 100 (Notable)
30 July 1974Mc Mechen Dam 13, USdaily rain23.4 mm (0.9 in)12.7 mm (0.5 in)3 years14 of 100 (Routine)
11 July 1974Mc Mechen Dam 13, USdaily rain38.1 mm (1.5 in)3.6 mm (0.14 in)36 years17 of 100 (Routine)
20 June 1974Mc Mechen Dam 13, USdaily rain14.7 mm (0.6 in)6.3 mm (0.25 in)16 years13 of 100 (Routine)
1 June 1974Mc Mechen Dam 13, USdaily rain16.8 mm (0.7 in)5.1 mm (0.20 in)12 years11 of 100 (Routine)
23 April 1974Mc Mechen Dam 13, USdaily rain26.7 mm (1.1 in)5.6 mm (0.22 in)29 years19 of 100 (Routine)
3 April 1974Mc Mechen Dam 13, USdaily rain31.2 mm (1.2 in)11.6 mm (0.5 in)17 years23 of 100 (Routine)
11 January 1974Mc Mechen Dam 13, USdaily rain25.9 mm (1.0 in)14.2 mm (0.6 in)11 years26 of 100 (Routine)
29 October 1973Mc Mechen Dam 13, USdaily rain21.6 mm (0.9 in)11.2 mm (0.4 in)26 years20 of 100 (Routine)
21 August 1973Mc Mechen Dam 13, USdaily rain34.0 mm (1.3 in)17.0 mm (0.7 in)12 years20 of 100 (Routine)
15 August 1973Mc Mechen Dam 13, USdaily rain16.0 mm (0.6 in)1.0 mm (0.04 in)26 years11 of 100 (Routine)
22 July 1973Mc Mechen Dam 13, USdaily rain23.4 mm (0.9 in)2.6 mm (0.10 in)26 years13 of 100 (Routine)
29 June 1973Mc Mechen Dam 13, USdaily rain24.6 mm (1.0 in)3.3 mm (0.13 in)22 years13 of 100 (Routine)
18 June 1973Mc Mechen Dam 13, USdaily rain41.1 mm (1.6 in)25.4 mm (1.0 in)15 years31 of 100 (Routine)
9 May 1973Mc Mechen Dam 13, USdaily rain42.4 mm (1.7 in)9.1 mm (0.36 in)12 years16 of 100 (Routine)

Extremes by Year

1933 to 1975
Yearly extremes at Mc Mechen Dam 13: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)22.8 C (73.0 F)197122.8 C (73.0 F)1
Wettest day (Rx1day)87.6 mm (3.4 in)196651.1 mm (2.0 in)43
Wettest five days (Rx5day)148.6 mm (5.9 in)193587.0 mm (3.4 in)43
Longest dry spell (CDD)45 days196316 days43

Hottest day (TXx)

Hottest day (TXx) at Mc Mechen Dam 13 by year The hottest day of the year at Mc Mechen Dam 13, 1933 to 1975. The record is 22.8 C (73.0 F) in 1971, marked on the chart; the median year is 22.8 C (73.0 F). 21.822.823.81940195019601970Record: 22.8 C (73.0 F) in 1971
The hottest day of the year at Mc Mechen Dam 13, 1933 to 1975. The record is 22.8 C (73.0 F) in 1971, marked on the chart; the median year is 22.8 C (73.0 F).
Hottest day (TXx) at Mc Mechen Dam 13 by year
YearHottest day (TXx)
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
197122.8 C (73.0 F)
1972n/a
1973n/a
1974n/a
1975n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Mc Mechen Dam 13 by year The wettest day of the year at Mc Mechen Dam 13, 1933 to 1975. The record is 87.6 mm (3.4 in) in 1966, marked on the chart; the median year is 51.1 mm (2.0 in). 204060801001940195019601970Record: 87.6 mm (3.4 in) in 1966
The wettest day of the year at Mc Mechen Dam 13, 1933 to 1975. The record is 87.6 mm (3.4 in) in 1966, marked on the chart; the median year is 51.1 mm (2.0 in).
Wettest day (Rx1day) at Mc Mechen Dam 13 by year
YearWettest day (Rx1day)
193357.9 mm (2.3 in)
193467.3 mm (2.6 in)
193554.1 mm (2.1 in)
193671.6 mm (2.8 in)
193750.8 mm (2.0 in)
193842.7 mm (1.7 in)
193948.0 mm (1.9 in)
194079.8 mm (3.1 in)
194143.4 mm (1.7 in)
194255.9 mm (2.2 in)
194358.4 mm (2.3 in)
194433.3 mm (1.3 in)
194548.3 mm (1.9 in)
194637.6 mm (1.5 in)
194761.5 mm (2.4 in)
194837.6 mm (1.5 in)
194943.4 mm (1.7 in)
195047.5 mm (1.9 in)
195153.8 mm (2.1 in)
195249.8 mm (2.0 in)
195362.0 mm (2.4 in)
195480.5 mm (3.2 in)
195562.2 mm (2.4 in)
195652.3 mm (2.1 in)
195736.3 mm (1.4 in)
195834.8 mm (1.4 in)
195954.1 mm (2.1 in)
196037.6 mm (1.5 in)
196151.1 mm (2.0 in)
196254.6 mm (2.1 in)
196366.3 mm (2.6 in)
196447.8 mm (1.9 in)
196543.7 mm (1.7 in)
196687.6 mm (3.4 in)
196734.3 mm (1.4 in)
196871.6 mm (2.8 in)
196968.6 mm (2.7 in)
197052.1 mm (2.1 in)
197171.1 mm (2.8 in)
197248.8 mm (1.9 in)
197342.4 mm (1.7 in)
197438.1 mm (1.5 in)
197543.7 mm (1.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Mc Mechen Dam 13 by year The wettest five days of the year at Mc Mechen Dam 13, 1933 to 1975. The record is 148.6 mm (5.9 in) in 1935, marked on the chart; the median year is 87.0 mm (3.4 in). 0501001501940195019601970Record: 148.6 mm (5.9 in) in 1935
The wettest five days of the year at Mc Mechen Dam 13, 1933 to 1975. The record is 148.6 mm (5.9 in) in 1935, marked on the chart; the median year is 87.0 mm (3.4 in).
Wettest five days (Rx5day) at Mc Mechen Dam 13 by year
YearWettest five days (Rx5day)
193369.3 mm (2.7 in)
193476.2 mm (3.0 in)
1935148.6 mm (5.9 in)
193685.3 mm (3.4 in)
1937129.8 mm (5.1 in)
193867.1 mm (2.6 in)
193979.5 mm (3.1 in)
1940113.2 mm (4.5 in)
194190.9 mm (3.6 in)
194274.9 mm (2.9 in)
1943114.1 mm (4.5 in)
194465.3 mm (2.6 in)
1945124.5 mm (4.9 in)
194644.8 mm (1.8 in)
194772.2 mm (2.8 in)
194886.7 mm (3.4 in)
194977.4 mm (3.0 in)
195088.9 mm (3.5 in)
195168.6 mm (2.7 in)
195293.3 mm (3.7 in)
195363.5 mm (2.5 in)
1954113.7 mm (4.5 in)
1955106.7 mm (4.2 in)
195693.5 mm (3.7 in)
195771.1 mm (2.8 in)
195888.2 mm (3.5 in)
195970.6 mm (2.8 in)
196064.9 mm (2.6 in)
196193.8 mm (3.7 in)
196287.0 mm (3.4 in)
196399.8 mm (3.9 in)
196485.7 mm (3.4 in)
196566.1 mm (2.6 in)
196692.2 mm (3.6 in)
196788.1 mm (3.5 in)
196895.0 mm (3.7 in)
1969103.9 mm (4.1 in)
197080.6 mm (3.2 in)
1971104.9 mm (4.1 in)
197295.3 mm (3.8 in)
197373.9 mm (2.9 in)
1974146.7 mm (5.8 in)
197573.0 mm (2.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Mc Mechen Dam 13 by year The longest dry spell of the year at Mc Mechen Dam 13, 1933 to 1975. The record is 45 days in 1963, marked on the chart; the median year is 16 days. 010203040501940195019601970Record: 45 days in 1963
The longest dry spell of the year at Mc Mechen Dam 13, 1933 to 1975. The record is 45 days in 1963, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Mc Mechen Dam 13 by year
YearLongest dry spell (CDD)
193311 days
193425 days
193514 days
193618 days
193713 days
193813 days
193913 days
194014 days
194119 days
194220 days
194326 days
194416 days
194515 days
194617 days
194727 days
194816 days
194914 days
195018 days
195116 days
195222 days
195323 days
195413 days
195528 days
195614 days
195713 days
195812 days
195922 days
196012 days
196111 days
196217 days
196345 days
196423 days
196513 days
196617 days
196725 days
196818 days
196925 days
197015 days
197117 days
197213 days
197314 days
19748 days
197514 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

41 years, 1934 to 1974

A day with at least 51.2 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 95.7 mm (3.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Mc Mechen Dam 13: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years51.2 mm (2.0 in)
5 years63.9 mm (2.5 in)
10 years72.0 mm (2.8 in)
25 years81.8 mm (3.2 in)
50 years88.9 mm (3.5 in)Longer than the 41 years of record
100 years95.7 mm (3.8 in)Longer than the 41 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, 41 years of values from 1934 to 1974.

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: 87.6 mm (3.4 in) in 1966; 80.5 mm (3.2 in) in 1954; 79.8 mm (3.1 in) in 1940.

Download the Data

  • Data for Mc Mechen Dam 13 standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Mc Mechen Dam 13 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

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