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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Plano Alto Weather Records (BR002956007)

Record envelope, standing records and threshold days for Plano Alto (BR002956007), Brazil, with 56 years of record.

Key Facts for Plano Alto

  • Plano Alto (BR002956007) is a weather station in Brazil at -29.77 latitude and -56.52 longitude, 120 m (394 ft) above sea level.
  • The station reports from 1943 to 1998, 56 years of record.
  • 0 records set at Plano Alto still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Plano Alto set a daily record precipitation of 140.0 mm (5.5 in) on 12 April 1998.

About the Station

  • Location: Brazil, -29.77 latitude, -56.52 longitude.
  • Elevation: 120 m (394 ft).
  • Period of record: 1943 to 1998, 56 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Plano Alto, with 2026 drawn through them The band shows the record high and record low for each calendar day at Plano Alto. 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 Plano Alto. 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 Plano Alto, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Decn/an/an/an/a

Which Years Hold Standing Records

0 standing records
Standing records at Plano Alto by the year they were set 0 records at Plano Alto still stand. 00000000000
0 records at Plano Alto still stand.
Standing records at Plano Alto by the year they were set
Year setStanding records

Wettest Day of Each Month

May: 230.0 mm (9.1 in)
Record daily precipitation for each month at Plano Alto The wettest day on record for each calendar month at Plano Alto. The most was 230.0 mm (9.1 in) on 14 May 1961. 0100200300 Jan: 135.0 mm (5.3 in), 26 January 1978 Jan Feb: 185.2 mm (7.3 in), 23 February 1983 Feb Mar: 200.0 mm (7.9 in), 27 March 1959 Mar Apr: 158.0 mm (6.2 in), 2 April 1956 Apr May: 230.0 mm (9.1 in), 14 May 1961 May Jun: 189.0 mm (7.4 in), 3 June 1955 Jun Jul: 200.0 mm (7.9 in), 20 July 1960 Jul Aug: 135.0 mm (5.3 in), 29 August 1958 Aug Sep: 135.0 mm (5.3 in), 10 September 1958 Sep Oct: 166.0 mm (6.5 in), 11 October 1958 Oct Nov: 200.0 mm (7.9 in), 26 November 1961 Nov Dec: 180.0 mm (7.1 in), 5 December 1958 Dec
The wettest day on record for each calendar month at Plano Alto. The most was 230.0 mm (9.1 in) on 14 May 1961.
Record daily precipitation for each month at Plano Alto
MonthRecord daily precipitation (mm)Date
Jan135.0 mm (5.3 in)26 January 1978
Feb185.2 mm (7.3 in)23 February 1983
Mar200.0 mm (7.9 in)27 March 1959
Apr158.0 mm (6.2 in)2 April 1956
May230.0 mm (9.1 in)14 May 1961
Jun189.0 mm (7.4 in)3 June 1955
Jul200.0 mm (7.9 in)20 July 1960
Aug135.0 mm (5.3 in)29 August 1958
Sep135.0 mm (5.3 in)10 September 1958
Oct166.0 mm (6.5 in)11 October 1958
Nov200.0 mm (7.9 in)26 November 1961
Dec180.0 mm (7.1 in)5 December 1958

Latest Records

20
Latest records at Plano Alto
DateStationRecordValueBeat old record byOld record stoodSignificance
12 April 1998Plano Alto, BRdaily rain140.0 mm (5.5 in)50.0 mm (2.0 in)33 years30 of 100 (Routine)
30 January 1998Plano Alto, BRdaily rain49.0 mm (1.9 in)5.0 mm (0.20 in)7 years9 of 100 (Routine)
22 January 1998Plano Alto, BRdaily rain49.7 mm (2.0 in)17.7 mm (0.7 in)24 years19 of 100 (Routine)
1 January 1998Plano Alto, BRdaily rain68.4 mm (2.7 in)8.4 mm (0.33 in)27 years16 of 100 (Routine)
31 December 1997Plano Alto, BRdaily rain89.2 mm (3.5 in)59.7 mm (2.4 in)20 years33 of 100 (Routine)
22 December 1997Plano Alto, BRdaily rain49.7 mm (2.0 in)35.9 mm (1.4 in)7 years20 of 100 (Routine)
21 December 1997Plano Alto, BRdaily rain43.4 mm (1.7 in)16.0 mm (0.6 in)23 years16 of 100 (Routine)
13 December 1997Plano Alto, BRdaily rain78.6 mm (3.1 in)28.6 mm (1.1 in)51 years30 of 100 (Routine)
12 October 1997Plano Alto, BRdaily rain154.5 mm (6.1 in)95.4 mm (3.8 in)3 years36 of 100 (Notable)
4 October 1997Plano Alto, BRdaily rain93.8 mm (3.7 in)28.0 mm (1.1 in)2 years14 of 100 (Routine)
31 August 1997Plano Alto, BRdaily rain46.5 mm (1.8 in)2.5 mm (0.10 in)31 years15 of 100 (Routine)
11 February 1997Plano Alto, BRdaily rain23.0 mm (0.9 in)3.6 mm (0.14 in)7 years8 of 100 (Routine)
5 February 1997Plano Alto, BRdaily rain155.8 mm (6.1 in)65.8 mm (2.6 in)35 years38 of 100 (Notable)
21 January 1997Plano Alto, BRdaily rain33.4 mm (1.3 in)3.4 mm (0.13 in)46 years19 of 100 (Routine)
13 January 1997Plano Alto, BRdaily rain48.5 mm (1.9 in)22.5 mm (0.9 in)50 years29 of 100 (Routine)
9 December 1996Plano Alto, BRdaily rain77.5 mm (3.1 in)13.5 mm (0.5 in)49 years23 of 100 (Routine)
18 October 1996Plano Alto, BRdaily rain21.4 mm (0.8 in)3.2 mm (0.13 in)26 years13 of 100 (Routine)
28 March 1996Plano Alto, BRdaily rain146.6 mm (5.8 in)36.6 mm (1.4 in)44 years28 of 100 (Routine)
29 February 1996Plano Alto, BRdaily rain (Tie)12.0 mm (0.5 in)tie52 years5 of 100 (Routine)
4 October 1995Plano Alto, BRdaily rain65.8 mm (2.6 in)37.7 mm (1.5 in)16 years21 of 100 (Routine)

Extremes by Year

1943 to 1998
Yearly extremes at Plano Alto: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)230.0 mm (9.1 in)1961120.1 mm (4.7 in)55
Wettest five days (Rx5day)411.0 mm (16.2 in)1956188.4 mm (7.4 in)55
Longest dry spell (CDD)101 days194727 days55

Wettest day (Rx1day)

Wettest day (Rx1day) at Plano Alto by year The wettest day of the year at Plano Alto, 1943 to 1998. The record is 230.0 mm (9.1 in) in 1961, marked on the chart; the median year is 120.1 mm (4.7 in). 5010015020025019501960197019801990Record: 230.0 mm (9.1 in) in 1961
The wettest day of the year at Plano Alto, 1943 to 1998. The record is 230.0 mm (9.1 in) in 1961, marked on the chart; the median year is 120.1 mm (4.7 in).
Wettest day (Rx1day) at Plano Alto by year
YearWettest day (Rx1day)
194386.0 mm (3.4 in)
194495.0 mm (3.7 in)
194595.0 mm (3.7 in)
1946125.0 mm (4.9 in)
1947128.0 mm (5.0 in)
1948135.0 mm (5.3 in)
1949120.0 mm (4.7 in)
195095.0 mm (3.7 in)
1951120.0 mm (4.7 in)
1952132.0 mm (5.2 in)
195396.0 mm (3.8 in)
1954135.0 mm (5.3 in)
1955189.0 mm (7.4 in)
1956168.0 mm (6.6 in)
1957225.0 mm (8.9 in)
1958180.0 mm (7.1 in)
1959200.0 mm (7.9 in)
1960200.0 mm (7.9 in)
1961230.0 mm (9.1 in)
1962105.0 mm (4.1 in)
1963131.2 mm (5.2 in)
196490.0 mm (3.5 in)
1965106.0 mm (4.2 in)
1966120.0 mm (4.7 in)
1967138.3 mm (5.4 in)
196884.0 mm (3.3 in)
1969192.0 mm (7.6 in)
197080.0 mm (3.1 in)
197192.0 mm (3.6 in)
1972119.0 mm (4.7 in)
1973128.0 mm (5.0 in)
197495.0 mm (3.7 in)
197586.3 mm (3.4 in)
197677.3 mm (3.0 in)
1977135.0 mm (5.3 in)
1978135.0 mm (5.3 in)
197980.1 mm (3.2 in)
1980120.1 mm (4.7 in)
198174.1 mm (2.9 in)
1982149.2 mm (5.9 in)
1983185.2 mm (7.3 in)
1984145.0 mm (5.7 in)
1985103.2 mm (4.1 in)
1986104.0 mm (4.1 in)
1987124.1 mm (4.9 in)
198864.5 mm (2.5 in)
1989119.9 mm (4.7 in)
199075.9 mm (3.0 in)
1991104.0 mm (4.1 in)
1993167.0 mm (6.6 in)
199463.4 mm (2.5 in)
1995127.0 mm (5.0 in)
1996146.6 mm (5.8 in)
1997155.8 mm (6.1 in)
1998140.0 mm (5.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Plano Alto by year The wettest five days of the year at Plano Alto, 1943 to 1998. The record is 411.0 mm (16.2 in) in 1956, marked on the chart; the median year is 188.4 mm (7.4 in). 010020030040050019501960197019801990Record: 411.0 mm (16.2 in) in 1956
The wettest five days of the year at Plano Alto, 1943 to 1998. The record is 411.0 mm (16.2 in) in 1956, marked on the chart; the median year is 188.4 mm (7.4 in).
Wettest five days (Rx5day) at Plano Alto by year
YearWettest five days (Rx5day)
1943228.0 mm (9.0 in)
1944155.0 mm (6.1 in)
1945177.0 mm (7.0 in)
1946176.0 mm (6.9 in)
1947170.0 mm (6.7 in)
1948225.0 mm (8.9 in)
1949304.0 mm (12.0 in)
1950223.0 mm (8.8 in)
1951248.0 mm (9.8 in)
1952185.0 mm (7.3 in)
1953144.0 mm (5.7 in)
1954284.0 mm (11.2 in)
1955244.0 mm (9.6 in)
1956411.0 mm (16.2 in)
1957225.0 mm (8.9 in)
1958238.0 mm (9.4 in)
1959264.0 mm (10.4 in)
1960200.0 mm (7.9 in)
1961230.0 mm (9.1 in)
1962149.0 mm (5.9 in)
1963203.2 mm (8.0 in)
1964150.0 mm (5.9 in)
1965150.0 mm (5.9 in)
1966157.0 mm (6.2 in)
1967238.3 mm (9.4 in)
1968150.0 mm (5.9 in)
1969192.0 mm (7.6 in)
1970150.0 mm (5.9 in)
1971157.0 mm (6.2 in)
1972126.0 mm (5.0 in)
1973258.2 mm (10.2 in)
1974162.0 mm (6.4 in)
1975172.5 mm (6.8 in)
1976123.0 mm (4.8 in)
1977220.8 mm (8.7 in)
1978188.4 mm (7.4 in)
1979157.0 mm (6.2 in)
1980270.9 mm (10.7 in)
1981137.9 mm (5.4 in)
1982225.8 mm (8.9 in)
1983270.0 mm (10.6 in)
1984206.7 mm (8.1 in)
1985129.4 mm (5.1 in)
1986184.9 mm (7.3 in)
1987275.7 mm (10.9 in)
1988165.8 mm (6.5 in)
1989184.7 mm (7.3 in)
1990124.4 mm (4.9 in)
1991130.0 mm (5.1 in)
1993189.0 mm (7.4 in)
199489.6 mm (3.5 in)
1995229.4 mm (9.0 in)
1996175.9 mm (6.9 in)
1997215.3 mm (8.5 in)
1998232.8 mm (9.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Plano Alto by year The longest dry spell of the year at Plano Alto, 1943 to 1998. The record is 101 days in 1947, marked on the chart; the median year is 27 days. 025507510012519501960197019801990Record: 101 days in 1947
The longest dry spell of the year at Plano Alto, 1943 to 1998. The record is 101 days in 1947, marked on the chart; the median year is 27 days.
Longest dry spell (CDD) at Plano Alto by year
YearLongest dry spell (CDD)
194322 days
194434 days
194533 days
194624 days
1947101 days
194859 days
194958 days
195039 days
195127 days
195247 days
195362 days
195432 days
195544 days
195631 days
195723 days
195823 days
195924 days
196033 days
196127 days
196236 days
196331 days
196436 days
196527 days
196626 days
196720 days
196824 days
196933 days
197027 days
197136 days
197222 days
197323 days
197431 days
197540 days
197637 days
197720 days
197827 days
197918 days
198017 days
198124 days
198219 days
198322 days
198423 days
198519 days
198617 days
198717 days
198825 days
198922 days
199030 days
199145 days
199351 days
199430 days
199529 days
199633 days
199722 days
199815 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

52 years, 1944 to 1997

A day with at least 120.4 mm (4.7 in) of rain is expected about once in 2 years. A day with at least 254.2 mm (10.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Plano Alto: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years120.4 mm (4.7 in)
5 years157.7 mm (6.2 in)
10 years181.8 mm (7.2 in)
25 years211.5 mm (8.3 in)
50 years233.1 mm (9.2 in)
100 years254.2 mm (10.0 in)Longer than the 52 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, 52 years of values from 1944 to 1997.

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: 230.0 mm (9.1 in) in 1961; 225.0 mm (8.9 in) in 1957; 200.0 mm (7.9 in) in 1959.

Download the Data

  • Data for Plano Alto standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Plano Alto 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 (2025-12-31).