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Built 2026-10-15 (15 October 2026)

Bolivar Dam Weather Records (USC00330823)

Record envelope, standing records and threshold days for Bolivar Dam (USC00330823), Ohio, United States, with 39 years of record.

Key Facts for Bolivar Dam

  • Bolivar Dam (USC00330823) is a weather station in Ohio, United States at 40.65 latitude and -81.43 longitude, 299 m (981 ft) above sea level.
  • The station reports from 1949 to 1987, 39 years of record.
  • 0 records set at Bolivar Dam still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Bolivar Dam set a daily record precipitation of 59.2 mm (2.3 in) on 2 July 1987.

About the Station

  • Location: Ohio, United States, 40.65 latitude, -81.43 longitude.
  • Elevation: 299 m (981 ft).
  • Period of record: 1949 to 1987, 39 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 Bolivar Dam, with 2026 drawn through them The band shows the record high and record low for each calendar day at Bolivar Dam. 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 Bolivar Dam. 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 Bolivar Dam, 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 Bolivar Dam by the year they were set 0 records at Bolivar Dam still stand. 00000000000
0 records at Bolivar Dam still stand.
Standing records at Bolivar Dam by the year they were set
Year setStanding records

Wettest Day of Each Month

Jul: 134.6 mm (5.3 in)
Record daily precipitation for each month at Bolivar Dam The wettest day on record for each calendar month at Bolivar Dam. The most was 134.6 mm (5.3 in) on 5 July 1969. 050100150 Jan: 41.4 mm (1.6 in), 27 January 1952 Jan Feb: 40.6 mm (1.6 in), 26 February 1961 Feb Mar: 60.7 mm (2.4 in), 10 March 1964 Mar Apr: 50.0 mm (2.0 in), 27 April 1959 Apr May: 70.4 mm (2.8 in), 24 May 1973 May Jun: 56.9 mm (2.2 in), 29 June 1957 Jun Jul: 134.6 mm (5.3 in), 5 July 1969 Jul Aug: 68.8 mm (2.7 in), 14 August 1975 Aug Sep: 113.5 mm (4.5 in), 14 September 1979 Sep Oct: 59.2 mm (2.3 in), 1 October 1959 Oct Nov: 57.4 mm (2.3 in), 5 November 1985 Nov Dec: 42.4 mm (1.7 in), 4 December 1978 Dec
The wettest day on record for each calendar month at Bolivar Dam. The most was 134.6 mm (5.3 in) on 5 July 1969.
Record daily precipitation for each month at Bolivar Dam
MonthRecord daily precipitation (mm)Date
Jan41.4 mm (1.6 in)27 January 1952
Feb40.6 mm (1.6 in)26 February 1961
Mar60.7 mm (2.4 in)10 March 1964
Apr50.0 mm (2.0 in)27 April 1959
May70.4 mm (2.8 in)24 May 1973
Jun56.9 mm (2.2 in)29 June 1957
Jul134.6 mm (5.3 in)5 July 1969
Aug68.8 mm (2.7 in)14 August 1975
Sep113.5 mm (4.5 in)14 September 1979
Oct59.2 mm (2.3 in)1 October 1959
Nov57.4 mm (2.3 in)5 November 1985
Dec42.4 mm (1.7 in)4 December 1978

Latest Records

20
Latest records at Bolivar Dam
DateStationRecordValueBeat old record byOld record stoodSignificance
2 July 1987Bolivar Dam, USdaily rain59.2 mm (2.3 in)20.1 mm (0.8 in)0 years16 of 100 (Routine)
19 May 1987Bolivar Dam, USdaily rain21.6 mm (0.9 in)5.3 mm (0.21 in)28 years16 of 100 (Routine)
3 May 1987Bolivar Dam, USdaily rain15.5 mm (0.6 in)2.3 mm (0.09 in)4 years6 of 100 (Routine)
6 April 1987Bolivar Dam, USdaily snow depth5.1 cm (2.0 in)5.1 cm (2.0 in)36 years19 of 100 (Routine)
5 April 1987Bolivar Dam, USdaily snow depth22.9 cm (9.0 in)22.9 cm (9.0 in)36 years36 of 100 (Notable)
5 April 1987Bolivar Dam, USdaily snowfall10.2 cm (4.0 in)10.2 cm (4.0 in)36 years34 of 100 (Routine)
4 April 1987Bolivar Dam, USmonthly snowfall38.1 cm (15.0 in)27.9 cm (11.0 in)4 years54 of 100 (Notable)
4 April 1987Bolivar Dam, USmonthly snow depth38.1 cm (15.0 in)30.5 cm (12.0 in)33 years53 of 100 (Notable)
31 March 1987Bolivar Dam, USdaily rain34.8 mm (1.4 in)19.1 mm (0.8 in)24 years34 of 100 (Routine)
31 March 1987Bolivar Dam, USdaily snowfall7.6 cm (3.0 in)2.5 cm (1.0 in)24 years16 of 100 (Routine)
2 January 1987Bolivar Dam, USdaily snowfall (Tie)10.2 cm (4.0 in)tie21 years2 of 100 (Routine)
3 December 1986Bolivar Dam, USdaily rain18.3 mm (0.7 in)1.0 mm (0.04 in)19 years9 of 100 (Routine)
26 October 1986Bolivar Dam, USdaily rain8.4 mm (0.33 in)1.5 mm (0.06 in)4 years5 of 100 (Routine)
25 September 1986Bolivar Dam, USdaily rain12.7 mm (0.5 in)6.6 mm (0.26 in)4 years9 of 100 (Routine)
24 September 1986Bolivar Dam, USdaily rain (Tie)26.4 mm (1.0 in)tie11 years1 of 100 (Routine)
9 July 1986Bolivar Dam, USdaily rain47.5 mm (1.9 in)12.7 mm (0.5 in)16 years15 of 100 (Routine)
2 July 1986Bolivar Dam, USdaily rain39.1 mm (1.5 in)23.1 mm (0.9 in)27 years26 of 100 (Routine)
7 June 1986Bolivar Dam, USdaily rain17.5 mm (0.7 in)2.0 mm (0.08 in)32 years14 of 100 (Routine)
27 February 1986Bolivar Dam, USdaily snowfall (Tie)2.5 cm (1.0 in)tie22 years2 of 100 (Routine)
15 February 1986Bolivar Dam, USdaily snowfall (Tie)5.1 cm (2.0 in)tie16 years1 of 100 (Routine)

Extremes by Year

1949 to 1987
Yearly extremes at Bolivar Dam: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)134.6 mm (5.3 in)196955.4 mm (2.2 in)39
Wettest five days (Rx5day)167.4 mm (6.6 in)196985.5 mm (3.4 in)39
Longest dry spell (CDD)37 days196315 days39

Wettest day (Rx1day)

Wettest day (Rx1day) at Bolivar Dam by year The wettest day of the year at Bolivar Dam, 1949 to 1987. The record is 134.6 mm (5.3 in) in 1969, marked on the chart; the median year is 55.4 mm (2.2 in). 0501001501950196019701980Record: 134.6 mm (5.3 in) in 1969
The wettest day of the year at Bolivar Dam, 1949 to 1987. The record is 134.6 mm (5.3 in) in 1969, marked on the chart; the median year is 55.4 mm (2.2 in).
Wettest day (Rx1day) at Bolivar Dam by year
YearWettest day (Rx1day)
194923.4 mm (0.9 in)
195056.1 mm (2.2 in)
195173.7 mm (2.9 in)
195241.4 mm (1.6 in)
195338.9 mm (1.5 in)
195456.6 mm (2.2 in)
195541.9 mm (1.6 in)
195655.4 mm (2.2 in)
195756.9 mm (2.2 in)
195853.6 mm (2.1 in)
195959.2 mm (2.3 in)
196028.7 mm (1.1 in)
196145.2 mm (1.8 in)
196248.3 mm (1.9 in)
196346.7 mm (1.8 in)
196460.7 mm (2.4 in)
196566.5 mm (2.6 in)
196650.8 mm (2.0 in)
196749.0 mm (1.9 in)
196889.4 mm (3.5 in)
1969134.6 mm (5.3 in)
197050.3 mm (2.0 in)
197155.1 mm (2.2 in)
197259.7 mm (2.4 in)
197370.4 mm (2.8 in)
197445.2 mm (1.8 in)
197568.8 mm (2.7 in)
197662.0 mm (2.4 in)
197799.6 mm (3.9 in)
197856.1 mm (2.2 in)
1979113.5 mm (4.5 in)
198062.7 mm (2.5 in)
198147.8 mm (1.9 in)
198233.0 mm (1.3 in)
198334.0 mm (1.3 in)
198447.8 mm (1.9 in)
198561.0 mm (2.4 in)
198647.5 mm (1.9 in)
198759.2 mm (2.3 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Bolivar Dam by year The wettest five days of the year at Bolivar Dam, 1949 to 1987. The record is 167.4 mm (6.6 in) in 1969, marked on the chart; the median year is 85.5 mm (3.4 in). 0501001502001950196019701980Record: 167.4 mm (6.6 in) in 1969
The wettest five days of the year at Bolivar Dam, 1949 to 1987. The record is 167.4 mm (6.6 in) in 1969, marked on the chart; the median year is 85.5 mm (3.4 in).
Wettest five days (Rx5day) at Bolivar Dam by year
YearWettest five days (Rx5day)
194951.6 mm (2.0 in)
195085.5 mm (3.4 in)
195173.7 mm (2.9 in)
195265.0 mm (2.6 in)
195354.1 mm (2.1 in)
195484.3 mm (3.3 in)
195553.3 mm (2.1 in)
195675.2 mm (3.0 in)
195792.4 mm (3.6 in)
195896.3 mm (3.8 in)
195978.0 mm (3.1 in)
196048.8 mm (1.9 in)
196195.5 mm (3.8 in)
196267.4 mm (2.7 in)
196380.0 mm (3.1 in)
1964107.2 mm (4.2 in)
196588.6 mm (3.5 in)
196669.8 mm (2.7 in)
196764.6 mm (2.5 in)
196898.8 mm (3.9 in)
1969167.4 mm (6.6 in)
197087.4 mm (3.4 in)
197169.8 mm (2.7 in)
197280.8 mm (3.2 in)
197391.2 mm (3.6 in)
197482.3 mm (3.2 in)
197591.7 mm (3.6 in)
1976119.0 mm (4.7 in)
1977111.3 mm (4.4 in)
197885.9 mm (3.4 in)
1979123.7 mm (4.9 in)
198088.1 mm (3.5 in)
198179.2 mm (3.1 in)
198271.1 mm (2.8 in)
198395.5 mm (3.8 in)
198472.9 mm (2.9 in)
198589.1 mm (3.5 in)
198690.7 mm (3.6 in)
1987109.7 mm (4.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Bolivar Dam by year The longest dry spell of the year at Bolivar Dam, 1949 to 1987. The record is 37 days in 1963, marked on the chart; the median year is 15 days. 0102030401950196019701980Record: 37 days in 1963
The longest dry spell of the year at Bolivar Dam, 1949 to 1987. The record is 37 days in 1963, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Bolivar Dam by year
YearLongest dry spell (CDD)
194917 days
195015 days
195114 days
195214 days
195317 days
195416 days
195518 days
195615 days
195713 days
195812 days
195915 days
196017 days
196114 days
196217 days
196337 days
196417 days
196513 days
196615 days
196725 days
196811 days
196912 days
197014 days
197114 days
19729 days
197314 days
197412 days
197517 days
197616 days
197719 days
197817 days
197910 days
198015 days
198118 days
198212 days
198322 days
19849 days
198513 days
198614 days
198716 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

37 years, 1950 to 1986

A day with at least 53.3 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 139.9 mm (5.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Bolivar Dam: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years53.3 mm (2.1 in)
5 years70.2 mm (2.8 in)
10 years83.5 mm (3.3 in)
25 years103.3 mm (4.1 in)
50 years120.5 mm (4.7 in)Longer than the 37 years of record
100 years139.9 mm (5.5 in)Longer than the 37 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, 37 years of values from 1950 to 1986.

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: 134.6 mm (5.3 in) in 1969; 113.5 mm (4.5 in) in 1979; 99.6 mm (3.9 in) in 1977.

Download the Data

  • Data for Bolivar Dam standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Bolivar Dam 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).