Built 2026-10-17 (17 October 2026)

Weather Records on 21 March 1970

612 weather records were set or tied worldwide on 21 March 1970. Highest significance: Avoca (Railway House), AU.

Key Facts for 21 March 1970

  • On 21 March 1970, 612 weather records were set or tied at long-record stations worldwide.
  • 52 were record highs and 126 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 23 monthly and 589 daily.
  • Avoca (Railway House) set a daily record precipitation of 59.7 mm (2.4 in) on 21 March 1970.
  • Across 157 earlier years (1797 to 2026) the same calendar date averaged 482 records.

Record Map

612 stations
Weather records on 21 March 1970 612 station records on 21 March 1970 are marked on the map, coloured by record type.
612 station records on 21 March 1970 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 21 March 1970: highest significance records shown on the map
StationCountryTypeValueSignificance
Avoca (Railway House)AustraliaRecord daily precipitation59.7 mm (2.4 in)69 of 100 (Major)
InterlakenAustraliaRecord daily precipitation111.5 mm (4.4 in)68 of 100 (Major)
Miena DamAustraliaRecord daily precipitation62.2 mm (2.4 in)66 of 100 (Major)
Waddamana Field Study CentreAustraliaRecord daily precipitation116.1 mm (4.6 in)61 of 100 (Major)
Bushy Park (Bushy Park EstatesAustraliaRecord daily precipitation37.1 mm (1.5 in)59 of 100 (Notable)
OsterleyAustraliaRecord daily precipitation93.5 mm (3.7 in)59 of 100 (Notable)
Tarraleah VillageAustraliaRecord daily precipitation82.6 mm (3.3 in)59 of 100 (Notable)
WelshpoolAustraliaRecord daily precipitation53.8 mm (2.1 in)58 of 100 (Notable)
Hobart (Waterworks Reserve)AustraliaRecord daily precipitation66.0 mm (2.6 in)58 of 100 (Notable)
Mangalore (Mangalore Farm)AustraliaRecord daily precipitation55.9 mm (2.2 in)58 of 100 (Notable)
GiffardAustraliaRecord daily precipitation75.9 mm (3.0 in)57 of 100 (Notable)
Meredith (Wattle Vale)AustraliaRecord daily precipitation60.5 mm (2.4 in)57 of 100 (Notable)
Oatlands Post OfficeAustraliaRecord daily precipitation38.1 mm (1.5 in)57 of 100 (Notable)
Bronte HeightsAustraliaRecord daily precipitation53.3 mm (2.1 in)57 of 100 (Notable)
BarramungaAustraliaRecord daily precipitation81.3 mm (3.2 in)56 of 100 (Notable)
Lake Leake (Elizabeth River)AustraliaRecord daily precipitation137.2 mm (5.4 in)56 of 100 (Notable)
Mathinna (Fingal Road)AustraliaRecord daily precipitation111.8 mm (4.4 in)56 of 100 (Notable)
Richmond (Lowlands)AustraliaRecord daily precipitation46.0 mm (1.8 in)56 of 100 (Notable)
Richmond (Brookbank)AustraliaRecord daily precipitation48.8 mm (1.9 in)56 of 100 (Notable)
Lake Crescent (Serat)AustraliaRecord daily precipitation65.0 mm (2.6 in)56 of 100 (Notable)
Chapple ValeAustraliaRecord daily precipitation72.9 mm (2.9 in)55 of 100 (Notable)
Lilydale Post OfficeAustraliaRecord daily precipitation40.6 mm (1.6 in)55 of 100 (Notable)
RisdonAustraliaRecord daily precipitation58.4 mm (2.3 in)55 of 100 (Notable)
Fish Creek (Hoddle Range)AustraliaRecord daily precipitation71.6 mm (2.8 in)54 of 100 (Notable)
StonehengeAustraliaRecord daily precipitation66.3 mm (2.6 in)53 of 100 (Notable)
Mount Seymour (Overton)AustraliaRecord daily precipitation72.1 mm (2.8 in)53 of 100 (Notable)
FranklinAustraliaRecord daily precipitation53.8 mm (2.1 in)53 of 100 (Notable)
Agnes RiverAustraliaRecord daily precipitation52.1 mm (2.1 in)52 of 100 (Notable)
Rossarden (Aberfoyle)AustraliaRecord daily precipitation68.6 mm (2.7 in)52 of 100 (Notable)
Lewis Hill (St Pauls River)AustraliaRecord daily precipitation84.6 mm (3.3 in)52 of 100 (Notable)
Shannon HecAustraliaRecord daily precipitation63.8 mm (2.5 in)52 of 100 (Notable)
Foster (Post Office)AustraliaRecord daily precipitation55.1 mm (2.2 in)50 of 100 (Notable)
Cranbrook (Cranbrook House)AustraliaRecord daily precipitation81.8 mm (3.2 in)50 of 100 (Notable)
Mt LockeUnited StatesRecord daily precipitation30.2 mm (1.2 in)50 of 100 (Notable)
RobyUnited StatesRecord daily snowfall10.2 cm (4.0 in)50 of 100 (Notable)
Mornington IslandAustraliaRecord daily precipitation362.0 mm (14.3 in)49 of 100 (Notable)
Beech ForestAustraliaRecord daily precipitation96.0 mm (3.8 in)49 of 100 (Notable)
Maria Island (Darlington)AustraliaRecord daily precipitation53.8 mm (2.1 in)49 of 100 (Notable)
Triabunna (3 Boyle Street)AustraliaRecord daily precipitation68.1 mm (2.7 in)49 of 100 (Notable)
Orford SouthAustraliaRecord daily precipitation55.4 mm (2.2 in)48 of 100 (Notable)
Runnymede (Whitemarsh)AustraliaRecord daily precipitation55.6 mm (2.2 in)48 of 100 (Notable)
RussellCanadaRecord daily snowfall6.4 cm (2.5 in)48 of 100 (Notable)
InverlochAustraliaRecord daily precipitation30.5 mm (1.2 in)47 of 100 (Notable)
Little Swanport (Lisdillon)AustraliaRecord daily precipitation65.5 mm (2.6 in)47 of 100 (Notable)
PutnamUnited StatesRecord daily snowfall12.7 cm (5.0 in)47 of 100 (Notable)
Elaine (Larundel)AustraliaRecord daily precipitation43.2 mm (1.7 in)46 of 100 (Notable)
JudburyAustraliaRecord daily precipitation61.0 mm (2.4 in)46 of 100 (Notable)
Mount NelsonAustraliaRecord daily precipitation51.3 mm (2.0 in)46 of 100 (Notable)
Bothwell (Franklin Street)AustraliaRecord daily precipitation49.8 mm (2.0 in)46 of 100 (Notable)
Swan RiverCanadaRecord daily snowfall10.2 cm (4.0 in)46 of 100 (Notable)
Bagdad Post OfficeAustraliaRecord daily precipitation72.9 mm (2.9 in)45 of 100 (Notable)
Tunnack Post OfficeAustraliaRecord daily precipitation78.7 mm (3.1 in)45 of 100 (Notable)
AspermontUnited StatesRecord daily snowfall11.4 cm (4.5 in)45 of 100 (Notable)
ApslawnAustraliaRecord daily precipitation83.8 mm (3.3 in)44 of 100 (Notable)
BrightonAustraliaRecord daily precipitation46.5 mm (1.8 in)44 of 100 (Notable)
Lake St Clair (Hec)AustraliaRecord daily precipitation46.0 mm (1.8 in)44 of 100 (Notable)
St Marys (Cullenswood)AustraliaRecord daily precipitation78.0 mm (3.1 in)43 of 100 (Notable)
KellevieAustraliaRecord daily precipitation59.7 mm (2.4 in)43 of 100 (Notable)
Swansea Post OfficeAustraliaRecord daily precipitation56.4 mm (2.2 in)43 of 100 (Notable)
GraftonUnited StatesRecord daily snowfall17.8 cm (7.0 in)43 of 100 (Notable)

Counts by Type and Timescale

612 records
Records on 21 March 1970 by type Records set or tied on 21 March 1970 by type: Highest daily maximum 20, Lowest daily maximum 101, Highest daily minimum 32, Lowest daily minimum 25, Heaviest daily rainfall 352, Heaviest daily snowfall 56, Deepest snow cover 26. 0100200300400Highest daily maximum: 20Lowest daily maximum: 101Highest daily minimum: 32Lowest daily minimum: 25Heaviest daily rainfall: 352Heaviest daily snowfall: 56Deepest snow cover: 26Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 21 March 1970 by type: Highest daily maximum 20, Lowest daily maximum 101, Highest daily minimum 32, Lowest daily minimum 25, Heaviest daily rainfall 352, Heaviest daily snowfall 56, Deepest snow cover 26.
Records on 21 March 1970 by type
Record typeRecords
Highest daily maximum20
Lowest daily maximum101
Highest daily minimum32
Lowest daily minimum25
Heaviest daily rainfall352
Heaviest daily snowfall56
Deepest snow cover26
Records on 21 March 1970 by timescale Records on 21 March 1970 by timescale: all-time 0, monthly 23, daily 589. 0200400600all-time: 0monthly: 23daily: 589all-timemonthlydaily
Records on 21 March 1970 by timescale: all-time 0, monthly 23, daily 589.
Records on 21 March 1970 by timescale
TimescaleRecords
all-time0
monthly23
daily589

How Much Records Were Beaten By

537 broken records
Histogram of margins by which records were beaten on 21 March 1970 Margins by which the 537 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 560.0. Ties are not counted. 02004006000 to 100: 523100 to 200: 10200 to 300: 2300 to 400: 1400 to 500: 0500 to 600: 10 to 100100 to 200200 to 300300 to 400400 to 500500 to 600
Margins by which the 537 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 560.0. Ties are not counted.
Histogram of margins by which records were beaten on 21 March 1970
MarginRecords
0 to 100523
100 to 20010
200 to 3002
300 to 4001
400 to 5000
500 to 6001

Top 20 by Significance

21 March 1970
Top 20 records on 21 March 1970 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
21 March 1970Avoca (Railway House), AUdaily rain59.7 mm (2.4 in)43.7 mm (1.7 in)70 years69 of 100 (Major)
21 March 1970Interlaken, AUmonthly rain111.5 mm (4.4 in)51.8 mm (2.0 in)39 years68 of 100 (Major)
21 March 1970Miena Dam, AUdaily rain62.2 mm (2.4 in)49.5 mm (1.9 in)63 years66 of 100 (Major)
21 March 1970Waddamana Field Study Centre, AUmonthly rain116.1 mm (4.6 in)43.5 mm (1.7 in)23 years61 of 100 (Major)
21 March 1970Bushy Park (Bushy Park Estates, AUdaily rain37.1 mm (1.5 in)26.7 mm (1.1 in)39 years59 of 100 (Notable)
21 March 1970Osterley, AUmonthly rain93.5 mm (3.7 in)27.0 mm (1.1 in)23 years59 of 100 (Notable)
21 March 1970Tarraleah Village, AUmonthly rain82.6 mm (3.3 in)38.7 mm (1.5 in)21 years59 of 100 (Notable)
21 March 1970Welshpool, AUdaily rain53.8 mm (2.1 in)37.5 mm (1.5 in)43 years58 of 100 (Notable)
21 March 1970Hobart (Waterworks Reserve), AUdaily rain66.0 mm (2.6 in)42.9 mm (1.7 in)39 years58 of 100 (Notable)
21 March 1970Mangalore (Mangalore Farm), AUdaily rain55.9 mm (2.2 in)45.5 mm (1.8 in)39 years58 of 100 (Notable)
21 March 1970Giffard, AUdaily rain75.9 mm (3.0 in)52.3 mm (2.1 in)39 years57 of 100 (Notable)
21 March 1970Meredith (Wattle Vale), AUdaily rain60.5 mm (2.4 in)36.1 mm (1.4 in)39 years57 of 100 (Notable)
21 March 1970Oatlands Post Office, AUdaily rain38.1 mm (1.5 in)26.4 mm (1.0 in)39 years57 of 100 (Notable)
21 March 1970Bronte Heights, AUdaily rain53.3 mm (2.1 in)34.2 mm (1.3 in)39 years57 of 100 (Notable)
21 March 1970Barramunga, AUdaily rain81.3 mm (3.2 in)53.4 mm (2.1 in)28 years56 of 100 (Notable)
21 March 1970Lake Leake (Elizabeth River), AUdaily rain137.2 mm (5.4 in)121.2 mm (4.8 in)28 years56 of 100 (Notable)
21 March 1970Mathinna (Fingal Road), AUdaily rain111.8 mm (4.4 in)82.1 mm (3.2 in)28 years56 of 100 (Notable)
21 March 1970Richmond (Lowlands), AUdaily rain46.0 mm (1.8 in)31.8 mm (1.3 in)39 years56 of 100 (Notable)
21 March 1970Richmond (Brookbank), AUdaily rain48.8 mm (1.9 in)40.2 mm (1.6 in)39 years56 of 100 (Notable)
21 March 1970Lake Crescent (Serat), AUdaily rain65.0 mm (2.6 in)52.3 mm (2.1 in)39 years56 of 100 (Notable)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1797 to 1970
Records on 03-21 in each year Records set or tied on this calendar date in each year from 1797 to 1970. 1970 had 612 records. 01,0002,0003,0001797: 21805: 11806: 11822: 11830: 11836: 11837: 11845: 11846: 11850: 11852: 21857: 11865: 71874: 11877: 11880: 11881: 11883: 21884: 11885: 51886: 21888: 11890: 31892: 11893: 11894: 11895: 11896: 21897: 21898: 31899: 41900: 41901: 91902: 181903: 231904: 171905: 61906: 31907: 141908: 31909: 111910: 101911: 101912: 361913: 971914: 711915: 271916: 441917: 431918: 431919: 291920: 901921: 961922: 501923: 721924: 961925: 1411926: 2821927: 1791928: 2931929: 1041930: 991931: 6381932: 3051933: 2351934: 1141935: 6751936: 2251937: 1721938: 7831939: 2801940: 3661941: 3111942: 3301943: 2171944: 5561945: 2941946: 5701947: 1921948: 9481949: 3301950: 3981951: 7791952: 6891953: 3421954: 2111955: 1,1241956: 6861957: 3731958: 6191959: 2301960: 8921961: 2681962: 5481963: 2981964: 3331965: 1,9611966: 4641967: 4871968: 7981969: 2191970: 6121971: 3581972: 5191973: 3851974: 1,0971975: 7511976: 7101977: 3761978: 8381979: 6561980: 7751981: 6761982: 8501983: 1,6731984: 8351985: 5031986: 1,1701987: 9481988: 1,1551989: 1,3961990: 1,3801991: 1,4461992: 8771993: 6871994: 6841995: 1,1411996: 1,1191997: 1,6701998: 9351999: 1,0442000: 8022001: 1,3422002: 1,5932003: 1,0732004: 1,5112005: 6492006: 1,4172007: 1,2202008: 7342009: 5582010: 1,1342011: 1,4512012: 2,8542013: 7282014: 6402015: 5682016: 5532017: 1,1172018: 8092019: 6492020: 4452021: 4892022: 6152023: 8152024: 4322025: 8452026: 2,6151797188119011917193319491965198119972013
Records set or tied on this calendar date in each year from 1797 to 1970. 1970 had 612 records.
Counts for years before the ledger starts come from the same station rules.
Records on 03-21 in each year
YearRecords
17972
18051
18061
18221
18301
18361
18371
18451
18461
18501
18522
18571
18657
18741
18771
18801
18811
18832
18841
18855
18862
18881
18903
18921
18931
18941
18951
18962
18972
18983
18994
19004
19019
190218
190323
190417
19056
19063
190714
19083
190911
191010
191110
191236
191397
191471
191527
191644
191743
191843
191929
192090
192196
192250
192372
192496
1925141
1926282
1927179
1928293
1929104
193099
1931638
1932305
1933235
1934114
1935675
1936225
1937172
1938783
1939280
1940366
1941311
1942330
1943217
1944556
1945294
1946570
1947192
1948948
1949330
1950398
1951779
1952689
1953342
1954211
19551,124
1956686
1957373
1958619
1959230
1960892
1961268
1962548
1963298
1964333
19651,961
1966464
1967487
1968798
1969219
1970612
1971358
1972519
1973385
19741,097
1975751
1976710
1977376
1978838
1979656
1980775
1981676
1982850
19831,673
1984835
1985503
19861,170
1987948
19881,155
19891,396
19901,380
19911,446
1992877
1993687
1994684
19951,141
19961,119
19971,670
1998935
19991,044
2000802
20011,342
20021,593
20031,073
20041,511
2005649
20061,417
20071,220
2008734
2009558
20101,134
20111,451
20122,854
2013728
2014640
2015568
2016553
20171,117
2018809
2019649
2020445
2021489
2022615
2023815
2024432
2025845
20262,615

Download the Data

  • Data for records on 1970-03-21: CSV or JSON. Field meanings are on the data page.

Sources: 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)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-15).