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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Uniao Weather Records (BR027941290)

Record envelope, standing records and threshold days for Uniao (BR027941290), Brazil, with 70 years of record.

Key Facts for Uniao

  • Uniao (BR027941290) is a weather station in Brazil at -4.58 latitude and -42.87 longitude, 50 m (164 ft) above sea level.
  • The station reports from 1914 to 1983, 70 years of record.
  • 0 records set at Uniao still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Uniao set a daily record precipitation of 12.4 mm (0.5 in) on 4 June 1983.

About the Station

  • Location: Brazil, -4.58 latitude, -42.87 longitude.
  • Elevation: 50 m (164 ft).
  • Period of record: 1914 to 1983, 70 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

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

Which Years Hold Standing Records

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

All-Time Record Progression

3 new records
When Uniao set new all-time records 3 all-time records were set at Uniao between 29 March 1960 and 27 April 1965. Each dot is a new record. Record daily precipitation29 March 1960: Record daily precipitation 100.0 mm (3.9 in)9 March 1963: Record daily precipitation 159.1 mm (6.3 in)27 April 1965: Record daily precipitation 170.0 mm (6.7 in)19601965
3 all-time records were set at Uniao between 29 March 1960 and 27 April 1965. Each dot is a new record.
When Uniao set new all-time records
DateKindDetail
1960-03-29Record daily precipitationRecord daily precipitation 100.0 mm (3.9 in)
1963-03-09Record daily precipitationRecord daily precipitation 159.1 mm (6.3 in)
1965-04-27Record daily precipitationRecord daily precipitation 170.0 mm (6.7 in)

Wettest Day of Each Month

Apr: 170.0 mm (6.7 in)
Record daily precipitation for each month at Uniao The wettest day on record for each calendar month at Uniao. The most was 170.0 mm (6.7 in) on 27 April 1965. 050100150200 Jan: 87.1 mm (3.4 in), 31 January 1981 Jan Feb: 107.9 mm (4.2 in), 27 February 1982 Feb Mar: 159.1 mm (6.3 in), 9 March 1963 Mar Apr: 170.0 mm (6.7 in), 27 April 1965 Apr May: 98.6 mm (3.9 in), 5 May 1978 May Jun: 66.3 mm (2.6 in), 12 June 1938 Jun Jul: 66.3 mm (2.6 in), 31 July 1939 Jul Aug: 58.0 mm (2.3 in), 6 August 1914 Aug Sep: 25.4 mm (1.0 in), 11 September 1932 Sep Oct: 102.0 mm (4.0 in), 16 October 1976 Oct Nov: 67.5 mm (2.7 in), 1 November 1940 Nov Dec: 132.6 mm (5.2 in), 24 December 1972 Dec
The wettest day on record for each calendar month at Uniao. The most was 170.0 mm (6.7 in) on 27 April 1965.
Record daily precipitation for each month at Uniao
MonthRecord daily precipitation (mm)Date
Jan87.1 mm (3.4 in)31 January 1981
Feb107.9 mm (4.2 in)27 February 1982
Mar159.1 mm (6.3 in)9 March 1963
Apr170.0 mm (6.7 in)27 April 1965
May98.6 mm (3.9 in)5 May 1978
Jun66.3 mm (2.6 in)12 June 1938
Jul66.3 mm (2.6 in)31 July 1939
Aug58.0 mm (2.3 in)6 August 1914
Sep25.4 mm (1.0 in)11 September 1932
Oct102.0 mm (4.0 in)16 October 1976
Nov67.5 mm (2.7 in)1 November 1940
Dec132.6 mm (5.2 in)24 December 1972

Latest Records

20
Latest records at Uniao
DateStationRecordValueBeat old record byOld record stoodSignificance
4 June 1983Uniao, BRdaily rain12.4 mm (0.5 in)1.5 mm (0.06 in)45 years20 of 100 (Routine)
4 February 1983Uniao, BRdaily rain44.6 mm (1.8 in)13.1 mm (0.5 in)24 years21 of 100 (Routine)
29 January 1983Uniao, BRdaily rain70.8 mm (2.8 in)6.3 mm (0.25 in)43 years22 of 100 (Routine)
30 October 1982Uniao, BRdaily rain27.4 mm (1.1 in)15.1 mm (0.6 in)68 years34 of 100 (Routine)
18 April 1982Uniao, BRdaily rain38.2 mm (1.5 in)13.9 mm (0.5 in)8 years15 of 100 (Routine)
4 March 1982Uniao, BRdaily rain92.6 mm (3.6 in)39.8 mm (1.6 in)24 years34 of 100 (Routine)
27 February 1982Uniao, BRmonthly rain107.9 mm (4.2 in)13.2 mm (0.5 in)13 years26 of 100 (Routine)
21 February 1982Uniao, BRdaily rain39.8 mm (1.6 in)3.3 mm (0.13 in)12 years10 of 100 (Routine)
3 February 1982Uniao, BRdaily rain39.1 mm (1.5 in)3.2 mm (0.13 in)18 years12 of 100 (Routine)
8 January 1982Uniao, BRdaily rain45.8 mm (1.8 in)9.7 mm (0.38 in)12 years14 of 100 (Routine)
7 January 1982Uniao, BRdaily rain16.2 mm (0.6 in)3.6 mm (0.14 in)4 years9 of 100 (Routine)
30 December 1981Uniao, BRdaily rain60.9 mm (2.4 in)23.4 mm (0.9 in)7 years21 of 100 (Routine)
16 May 1981Uniao, BRdaily rain71.6 mm (2.8 in)15.3 mm (0.6 in)2 years16 of 100 (Routine)
3 May 1981Uniao, BRdaily rain44.7 mm (1.8 in)1.9 mm (0.07 in)24 years14 of 100 (Routine)
31 January 1981Uniao, BRmonthly rain87.1 mm (3.4 in)3.5 mm (0.14 in)9 years20 of 100 (Routine)
27 December 1980Uniao, BRdaily rain74.9 mm (2.9 in)11.4 mm (0.4 in)24 years19 of 100 (Routine)
19 November 1980Uniao, BRdaily rain41.4 mm (1.6 in)11.7 mm (0.5 in)12 years16 of 100 (Routine)
3 July 1980Uniao, BRdaily rain13.6 mm (0.5 in)2.2 mm (0.09 in)43 years20 of 100 (Routine)
7 April 1980Uniao, BRdaily rain54.4 mm (2.1 in)17.4 mm (0.7 in)22 years21 of 100 (Routine)
26 February 1980Uniao, BRdaily rain69.6 mm (2.7 in)11.1 mm (0.4 in)29 years20 of 100 (Routine)

Extremes by Year

1914 to 1983
Yearly extremes at Uniao: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)170.0 mm (6.7 in)196565.0 mm (2.6 in)58
Wettest five days (Rx5day)369.8 mm (14.6 in)1963132.2 mm (5.2 in)58
Longest dry spell (CDD)162 days194261 days58

Wettest day (Rx1day)

Wettest day (Rx1day) at Uniao by year The wettest day of the year at Uniao, 1914 to 1983. The record is 170.0 mm (6.7 in) in 1965, marked on the chart; the median year is 65.0 mm (2.6 in). 0501001502001920194019601980Record: 170.0 mm (6.7 in) in 1965
The wettest day of the year at Uniao, 1914 to 1983. The record is 170.0 mm (6.7 in) in 1965, marked on the chart; the median year is 65.0 mm (2.6 in).
Wettest day (Rx1day) at Uniao by year
YearWettest day (Rx1day)
191458.0 mm (2.3 in)
191536.9 mm (1.5 in)
191625.2 mm (1.0 in)
192641.9 mm (1.6 in)
192951.8 mm (2.0 in)
193048.0 mm (1.9 in)
19311.5 mm (0.06 in)
193258.4 mm (2.3 in)
193348.3 mm (1.9 in)
193428.7 mm (1.1 in)
193563.5 mm (2.5 in)
193633.8 mm (1.3 in)
193758.7 mm (2.3 in)
193897.8 mm (3.9 in)
193985.0 mm (3.3 in)
194075.0 mm (3.0 in)
194166.0 mm (2.6 in)
194267.5 mm (2.7 in)
194352.9 mm (2.1 in)
194465.0 mm (2.6 in)
194565.0 mm (2.6 in)
194657.0 mm (2.2 in)
194765.0 mm (2.6 in)
194863.7 mm (2.5 in)
194962.5 mm (2.5 in)
195063.5 mm (2.5 in)
195162.2 mm (2.4 in)
195263.5 mm (2.5 in)
195376.5 mm (3.0 in)
195463.5 mm (2.5 in)
195565.0 mm (2.6 in)
195663.5 mm (2.5 in)
195762.5 mm (2.5 in)
195862.5 mm (2.5 in)
195961.0 mm (2.4 in)
1960100.0 mm (3.9 in)
196297.0 mm (3.8 in)
1963159.1 mm (6.3 in)
196482.0 mm (3.2 in)
1965170.0 mm (6.7 in)
196695.2 mm (3.7 in)
196780.3 mm (3.2 in)
196888.9 mm (3.5 in)
196994.7 mm (3.7 in)
197089.8 mm (3.5 in)
197194.0 mm (3.7 in)
1972132.6 mm (5.2 in)
197381.3 mm (3.2 in)
197495.2 mm (3.7 in)
1975115.5 mm (4.5 in)
1976102.0 mm (4.0 in)
197763.7 mm (2.5 in)
197898.6 mm (3.9 in)
1979110.4 mm (4.3 in)
198074.9 mm (2.9 in)
198187.1 mm (3.4 in)
1982107.9 mm (4.2 in)
198370.8 mm (2.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Uniao by year The wettest five days of the year at Uniao, 1914 to 1983. The record is 369.8 mm (14.6 in) in 1963, marked on the chart; the median year is 132.2 mm (5.2 in). 01002003004001920194019601980Record: 369.8 mm (14.6 in) in 1963
The wettest five days of the year at Uniao, 1914 to 1983. The record is 369.8 mm (14.6 in) in 1963, marked on the chart; the median year is 132.2 mm (5.2 in).
Wettest five days (Rx5day) at Uniao by year
YearWettest five days (Rx5day)
1914167.2 mm (6.6 in)
191595.3 mm (3.8 in)
191637.1 mm (1.5 in)
192676.2 mm (3.0 in)
192991.7 mm (3.6 in)
193056.9 mm (2.2 in)
19312.8 mm (0.11 in)
1932101.5 mm (4.0 in)
193397.4 mm (3.8 in)
193479.1 mm (3.1 in)
193593.2 mm (3.7 in)
1936106.5 mm (4.2 in)
193791.0 mm (3.6 in)
1938183.0 mm (7.2 in)
1939147.8 mm (5.8 in)
1940157.9 mm (6.2 in)
1941125.5 mm (4.9 in)
1942108.8 mm (4.3 in)
1943100.4 mm (4.0 in)
1944120.0 mm (4.7 in)
194595.3 mm (3.8 in)
1946120.4 mm (4.7 in)
1947193.3 mm (7.6 in)
1948112.2 mm (4.4 in)
1949130.5 mm (5.1 in)
1950167.5 mm (6.6 in)
1951113.0 mm (4.4 in)
1952188.8 mm (7.4 in)
1953113.2 mm (4.5 in)
1954153.0 mm (6.0 in)
1955130.0 mm (5.1 in)
1956162.0 mm (6.4 in)
1957206.9 mm (8.1 in)
1958126.2 mm (5.0 in)
1959117.5 mm (4.6 in)
1960245.0 mm (9.6 in)
196297.0 mm (3.8 in)
1963369.8 mm (14.6 in)
1964147.7 mm (5.8 in)
1965270.6 mm (10.7 in)
1966143.0 mm (5.6 in)
1967162.1 mm (6.4 in)
1968221.4 mm (8.7 in)
1969150.6 mm (5.9 in)
1970148.7 mm (5.9 in)
1971164.4 mm (6.5 in)
1972188.9 mm (7.4 in)
1973195.6 mm (7.7 in)
1974202.2 mm (8.0 in)
1975184.1 mm (7.2 in)
1976106.0 mm (4.2 in)
1977175.7 mm (6.9 in)
1978133.9 mm (5.3 in)
1979137.1 mm (5.4 in)
1980155.9 mm (6.1 in)
1981119.9 mm (4.7 in)
1982182.1 mm (7.2 in)
1983126.4 mm (5.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Uniao by year The longest dry spell of the year at Uniao, 1914 to 1983. The record is 162 days in 1942, marked on the chart; the median year is 61 days. 0501001502001920194019601980Record: 162 days in 1942
The longest dry spell of the year at Uniao, 1914 to 1983. The record is 162 days in 1942, marked on the chart; the median year is 61 days.
Longest dry spell (CDD) at Uniao by year
YearLongest dry spell (CDD)
191441 days
191522 days
191692 days
192681 days
192931 days
193029 days
193121 days
193287 days
193343 days
193459 days
193541 days
193676 days
193799 days
193849 days
193955 days
194063 days
1941129 days
1942162 days
194352 days
1944122 days
194560 days
194671 days
194754 days
194849 days
194946 days
195059 days
195189 days
195282 days
195371 days
1954105 days
195534 days
195642 days
195788 days
195885 days
195947 days
1960141 days
196247 days
196399 days
196456 days
196592 days
196661 days
1967104 days
196863 days
196994 days
197036 days
197132 days
197231 days
197321 days
197471 days
197510 days
197678 days
197777 days
197839 days
197963 days
198049 days
1981151 days
198236 days
1983128 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

48 years, 1915 to 1983

A day with at least 72.2 mm (2.8 in) of rain is expected about once in 2 years. A day with at least 173.2 mm (6.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Uniao: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years72.2 mm (2.8 in)
5 years95.1 mm (3.7 in)
10 years111.9 mm (4.4 in)
25 years134.9 mm (5.3 in)
50 years153.5 mm (6.0 in)Longer than the 48 years of record
100 years173.2 mm (6.8 in)Longer than the 48 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, 48 years of values from 1915 to 1983.

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: 170.0 mm (6.7 in) in 1965; 159.1 mm (6.3 in) in 1963; 132.6 mm (5.2 in) in 1972.

Download the Data

  • Data for Uniao standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Uniao 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

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