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Built 2026-10-15 (15 October 2026)

Grassy Hill Radio Otc Weather Records (ASN00031094)

Record envelope, standing records and threshold days for Grassy Hill Radio Otc (ASN00031094), Australia, with 54 years of record.

Key Facts for Grassy Hill Radio Otc

  • Grassy Hill Radio Otc (ASN00031094) is a weather station in Australia at -15.47 latitude and 145.25 longitude, n/a above sea level.
  • The station reports from 1896 to 1949, 54 years of record.
  • 0 records set at Grassy Hill Radio Otc still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Grassy Hill Radio Otc set a daily record precipitation of 7.6 mm (0.30 in) on 3 September 1949.

About the Station

  • Location: Australia, -15.47 latitude, 145.25 longitude.
  • Elevation: n/a.
  • Period of record: 1896 to 1949, 54 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Grassy Hill Radio Otc, with 2026 drawn through them The band shows the record high and record low for each calendar day at Grassy Hill Radio Otc. 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 Grassy Hill Radio Otc. 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 Grassy Hill Radio Otc, 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 Grassy Hill Radio Otc by the year they were set 0 records at Grassy Hill Radio Otc still stand. 00000000000
0 records at Grassy Hill Radio Otc still stand.
Standing records at Grassy Hill Radio Otc by the year they were set
Year setStanding records

All-Time Record Progression

3 new records
When Grassy Hill Radio Otc set new all-time records 3 all-time records were set at Grassy Hill Radio Otc between 25 February 1928 and 11 February 1949. Each dot is a new record. Record daily precipitation25 February 1928: Record daily precipitation 224.5 mm (8.8 in)5 March 1928: Record daily precipitation 231.6 mm (9.1 in)11 February 1949: Record daily precipitation 396.2 mm (15.6 in)19301935194019451950
3 all-time records were set at Grassy Hill Radio Otc between 25 February 1928 and 11 February 1949. Each dot is a new record.
When Grassy Hill Radio Otc set new all-time records
DateKindDetail
1928-02-25Record daily precipitationRecord daily precipitation 224.5 mm (8.8 in)
1928-03-05Record daily precipitationRecord daily precipitation 231.6 mm (9.1 in)
1949-02-11Record daily precipitationRecord daily precipitation 396.2 mm (15.6 in)

Wettest Day of Each Month

Feb: 396.2 mm (15.6 in)
Record daily precipitation for each month at Grassy Hill Radio Otc The wettest day on record for each calendar month at Grassy Hill Radio Otc. The most was 396.2 mm (15.6 in) on 11 February 1949. 0100200300400 Jan: 219.2 mm (8.6 in), 23 January 1914 Jan Feb: 396.2 mm (15.6 in), 11 February 1949 Feb Mar: 231.6 mm (9.1 in), 5 March 1928 Mar Apr: 170.2 mm (6.7 in), 1 April 1911 Apr May: 96.5 mm (3.8 in), 4 May 1920 May Jun: 86.9 mm (3.4 in), 17 June 1939 Jun Jul: 37.6 mm (1.5 in), 8 July 1944 Jul Aug: 66.0 mm (2.6 in), 6 August 1947 Aug Sep: 22.9 mm (0.9 in), 5 September 1943 Sep Oct: 58.9 mm (2.3 in), 4 October 1930 Oct Nov: 166.1 mm (6.5 in), 18 November 1906 Nov Dec: 170.9 mm (6.7 in), 26 December 1907 Dec
The wettest day on record for each calendar month at Grassy Hill Radio Otc. The most was 396.2 mm (15.6 in) on 11 February 1949.
Record daily precipitation for each month at Grassy Hill Radio Otc
MonthRecord daily precipitation (mm)Date
Jan219.2 mm (8.6 in)23 January 1914
Feb396.2 mm (15.6 in)11 February 1949
Mar231.6 mm (9.1 in)5 March 1928
Apr170.2 mm (6.7 in)1 April 1911
May96.5 mm (3.8 in)4 May 1920
Jun86.9 mm (3.4 in)17 June 1939
Jul37.6 mm (1.5 in)8 July 1944
Aug66.0 mm (2.6 in)6 August 1947
Sep22.9 mm (0.9 in)5 September 1943
Oct58.9 mm (2.3 in)4 October 1930
Nov166.1 mm (6.5 in)18 November 1906
Dec170.9 mm (6.7 in)26 December 1907

Latest Records

20
Latest records at Grassy Hill Radio Otc
DateStationRecordValueBeat old record byOld record stoodSignificance
3 September 1949Grassy Hill Radio Otc, AUdaily rain7.6 mm (0.30 in)1.8 mm (0.07 in)6 years11 of 100 (Routine)
14 April 1949Grassy Hill Radio Otc, AUdaily rain38.1 mm (1.5 in)21.1 mm (0.8 in)36 years26 of 100 (Routine)
29 March 1949Grassy Hill Radio Otc, AUdaily rain38.1 mm (1.5 in)12.2 mm (0.5 in)22 years15 of 100 (Routine)
11 February 1949Grassy Hill Radio Otc, AUall-time rain396.2 mm (15.6 in)164.6 mm (6.5 in)20 years71 of 100 (Major)
7 November 1948Grassy Hill Radio Otc, AUdaily rain21.6 mm (0.9 in)2.5 mm (0.10 in)32 years15 of 100 (Routine)
14 June 1948Grassy Hill Radio Otc, AUdaily rain11.9 mm (0.5 in)2.5 mm (0.10 in)10 years10 of 100 (Routine)
5 January 1948Grassy Hill Radio Otc, AUdaily rain84.3 mm (3.3 in)22.8 mm (0.9 in)26 years21 of 100 (Routine)
5 December 1947Grassy Hill Radio Otc, AUdaily rain21.3 mm (0.8 in)0.2 mm (0.01 in)5 years6 of 100 (Routine)
4 December 1947Grassy Hill Radio Otc, AUdaily rain60.5 mm (2.4 in)42.2 mm (1.7 in)29 years33 of 100 (Routine)
6 August 1947Grassy Hill Radio Otc, AUmonthly rain66.0 mm (2.6 in)33.0 mm (1.3 in)46 years69 of 100 (Major)
5 August 1947Grassy Hill Radio Otc, AUdaily rain12.2 mm (0.5 in)3.3 mm (0.13 in)5 years14 of 100 (Routine)
21 July 1947Grassy Hill Radio Otc, AUdaily rain6.4 mm (0.25 in)0.3 mm (0.01 in)38 years16 of 100 (Routine)
19 May 1947Grassy Hill Radio Otc, AUdaily rain52.3 mm (2.1 in)43.9 mm (1.7 in)45 years58 of 100 (Notable)
17 May 1947Grassy Hill Radio Otc, AUdaily rain32.8 mm (1.3 in)14.3 mm (0.6 in)45 years37 of 100 (Notable)
11 July 1946Grassy Hill Radio Otc, AUdaily rain14.7 mm (0.6 in)0.7 mm (0.03 in)29 years14 of 100 (Routine)
16 January 1946Grassy Hill Radio Otc, AUdaily rain61.0 mm (2.4 in)22.9 mm (0.9 in)30 years22 of 100 (Routine)
27 August 1945Grassy Hill Radio Otc, AUdaily rain8.4 mm (0.33 in)0.8 mm (0.03 in)31 years16 of 100 (Routine)
31 May 1945Grassy Hill Radio Otc, AUdaily rain15.2 mm (0.6 in)8.8 mm (0.35 in)28 years20 of 100 (Routine)
19 March 1945Grassy Hill Radio Otc, AUdaily rain89.4 mm (3.5 in)6.1 mm (0.24 in)12 years10 of 100 (Routine)
13 March 1945Grassy Hill Radio Otc, AUdaily rain118.1 mm (4.6 in)53.8 mm (2.1 in)32 years35 of 100 (Notable)

Extremes by Year

1896 to 1949
Yearly extremes at Grassy Hill Radio Otc: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)396.2 mm (15.6 in)1949119.6 mm (4.7 in)54
Wettest five days (Rx5day)540.2 mm (21.3 in)1928247.6 mm (9.7 in)54
Longest dry spell (CDD)120 days194639 days54

Wettest day (Rx1day)

Wettest day (Rx1day) at Grassy Hill Radio Otc by year The wettest day of the year at Grassy Hill Radio Otc, 1896 to 1949. The record is 396.2 mm (15.6 in) in 1949, marked on the chart; the median year is 119.6 mm (4.7 in). 010020030040019001910192019301940Record: 396.2 mm (15.6 in) in 1949
The wettest day of the year at Grassy Hill Radio Otc, 1896 to 1949. The record is 396.2 mm (15.6 in) in 1949, marked on the chart; the median year is 119.6 mm (4.7 in).
Wettest day (Rx1day) at Grassy Hill Radio Otc by year
YearWettest day (Rx1day)
1896149.6 mm (5.9 in)
189779.8 mm (3.1 in)
1898136.4 mm (5.4 in)
1899153.2 mm (6.0 in)
190086.4 mm (3.4 in)
190191.4 mm (3.6 in)
1902120.7 mm (4.8 in)
190363.0 mm (2.5 in)
1904140.0 mm (5.5 in)
1905171.7 mm (6.8 in)
1906166.1 mm (6.5 in)
1907170.9 mm (6.7 in)
190894.0 mm (3.7 in)
1909131.6 mm (5.2 in)
191097.8 mm (3.9 in)
1911170.2 mm (6.7 in)
1912113.8 mm (4.5 in)
1913126.5 mm (5.0 in)
1914219.2 mm (8.6 in)
191555.9 mm (2.2 in)
191682.6 mm (3.3 in)
1917142.2 mm (5.6 in)
191862.2 mm (2.4 in)
191997.5 mm (3.8 in)
192096.5 mm (3.8 in)
1921174.2 mm (6.9 in)
192298.8 mm (3.9 in)
1923124.5 mm (4.9 in)
1924111.3 mm (4.4 in)
192591.4 mm (3.6 in)
192659.7 mm (2.4 in)
1927106.7 mm (4.2 in)
1928231.6 mm (9.1 in)
1929127.0 mm (5.0 in)
1930199.4 mm (7.9 in)
1931102.6 mm (4.0 in)
1932124.5 mm (4.9 in)
1933118.4 mm (4.7 in)
193481.8 mm (3.2 in)
193565.5 mm (2.6 in)
1936153.2 mm (6.0 in)
193790.9 mm (3.6 in)
193878.2 mm (3.1 in)
1939186.9 mm (7.4 in)
1940151.1 mm (5.9 in)
1941154.7 mm (6.1 in)
1942135.4 mm (5.3 in)
1943111.5 mm (4.4 in)
1944208.8 mm (8.2 in)
1945128.5 mm (5.1 in)
194686.4 mm (3.4 in)
194793.5 mm (3.7 in)
194884.3 mm (3.3 in)
1949396.2 mm (15.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Grassy Hill Radio Otc by year The wettest five days of the year at Grassy Hill Radio Otc, 1896 to 1949. The record is 540.2 mm (21.3 in) in 1928, marked on the chart; the median year is 247.6 mm (9.7 in). 020040060019001910192019301940Record: 540.2 mm (21.3 in) in 1928
The wettest five days of the year at Grassy Hill Radio Otc, 1896 to 1949. The record is 540.2 mm (21.3 in) in 1928, marked on the chart; the median year is 247.6 mm (9.7 in).
Wettest five days (Rx5day) at Grassy Hill Radio Otc by year
YearWettest five days (Rx5day)
1896249.9 mm (9.8 in)
1897156.1 mm (6.1 in)
1898257.8 mm (10.1 in)
1899352.1 mm (13.9 in)
1900172.7 mm (6.8 in)
1901151.7 mm (6.0 in)
1902208.4 mm (8.2 in)
1903147.0 mm (5.8 in)
1904164.1 mm (6.5 in)
1905274.9 mm (10.8 in)
1906288.0 mm (11.3 in)
1907451.0 mm (17.8 in)
1908217.4 mm (8.6 in)
1909192.0 mm (7.6 in)
1910204.6 mm (8.1 in)
1911418.4 mm (16.5 in)
1912269.1 mm (10.6 in)
1913248.6 mm (9.8 in)
1914448.8 mm (17.7 in)
1915112.9 mm (4.4 in)
1916238.7 mm (9.4 in)
1917285.3 mm (11.2 in)
1918141.4 mm (5.6 in)
1919246.1 mm (9.7 in)
1920246.6 mm (9.7 in)
1921385.0 mm (15.2 in)
1922377.8 mm (14.9 in)
1923343.8 mm (13.5 in)
1924217.0 mm (8.5 in)
1925254.0 mm (10.0 in)
1926106.6 mm (4.2 in)
1927179.4 mm (7.1 in)
1928540.2 mm (21.3 in)
1929293.4 mm (11.6 in)
1930272.2 mm (10.7 in)
1931234.2 mm (9.2 in)
1932359.2 mm (14.1 in)
1933343.6 mm (13.5 in)
1934199.7 mm (7.9 in)
1935170.2 mm (6.7 in)
1936270.8 mm (10.7 in)
1937230.1 mm (9.1 in)
1938157.1 mm (6.2 in)
1939489.0 mm (19.3 in)
1940343.1 mm (13.5 in)
1941285.8 mm (11.3 in)
1942172.5 mm (6.8 in)
1943303.2 mm (11.9 in)
1944235.5 mm (9.3 in)
1945315.0 mm (12.4 in)
1946227.4 mm (9.0 in)
1947167.0 mm (6.6 in)
1948184.7 mm (7.3 in)
1949524.0 mm (20.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Grassy Hill Radio Otc by year The longest dry spell of the year at Grassy Hill Radio Otc, 1896 to 1949. The record is 120 days in 1946, marked on the chart; the median year is 39 days. 05010015019001910192019301940Record: 120 days in 1946
The longest dry spell of the year at Grassy Hill Radio Otc, 1896 to 1949. The record is 120 days in 1946, marked on the chart; the median year is 39 days.
Longest dry spell (CDD) at Grassy Hill Radio Otc by year
YearLongest dry spell (CDD)
189633 days
189752 days
189864 days
189940 days
190088 days
190138 days
190227 days
190359 days
190443 days
190597 days
190630 days
190721 days
190827 days
190928 days
191051 days
191150 days
191233 days
191347 days
191419 days
191539 days
191628 days
191762 days
191839 days
191936 days
192039 days
192123 days
192279 days
192367 days
192420 days
192539 days
192658 days
192715 days
192861 days
192939 days
193021 days
193129 days
193266 days
193343 days
193428 days
193539 days
193631 days
193746 days
193831 days
193940 days
194027 days
194163 days
194230 days
194351 days
194444 days
194536 days
1946120 days
194724 days
194866 days
194922 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

50 years, 1896 to 1948

A day with at least 118.1 mm (4.6 in) of rain is expected about once in 2 years. A day with at least 255.4 mm (10.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Grassy Hill Radio Otc: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years118.1 mm (4.6 in)
5 years157.8 mm (6.2 in)
10 years182.8 mm (7.2 in)
25 years213.2 mm (8.4 in)
50 years234.7 mm (9.2 in)
100 years255.4 mm (10.1 in)Longer than the 50 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, 50 years of values from 1896 to 1948.

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: 231.6 mm (9.1 in) in 1928; 219.2 mm (8.6 in) in 1914; 208.8 mm (8.2 in) in 1944.

Download the Data

  • Data for Grassy Hill Radio Otc standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Grassy Hill Radio Otc 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).