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Built 2026-10-15 (15 October 2026)

Chepstowe Weather Records (ASN00089046)

Record envelope, standing records and threshold days for Chepstowe (ASN00089046), Australia, with 64 years of record.

Key Facts for Chepstowe

  • Chepstowe (ASN00089046) is a weather station in Australia at -37.60 latitude and 143.50 longitude, n/a above sea level.
  • The station reports from 1887 to 1950, 64 years of record.
  • 0 records set at Chepstowe still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Chepstowe tied a daily record precipitation of 12.7 mm (0.5 in) on 5 April 1950.

About the Station

  • Location: Australia, -37.60 latitude, 143.50 longitude.
  • Elevation: n/a.
  • Period of record: 1887 to 1950, 64 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

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

Wettest Day of Each Month

Aug: 70.9 mm (2.8 in)
Record daily precipitation for each month at Chepstowe The wettest day on record for each calendar month at Chepstowe. The most was 70.9 mm (2.8 in) on 20 August 1909. 020406080 Jan: 60.2 mm (2.4 in), 21 January 1904 Jan Feb: 59.9 mm (2.4 in), 15 February 1913 Feb Mar: 49.5 mm (1.9 in), 6 March 1910 Mar Apr: 45.7 mm (1.8 in), 8 April 1889 Apr May: 42.4 mm (1.7 in), 5 May 1917 May Jun: 37.6 mm (1.5 in), 29 June 1900 Jun Jul: 28.7 mm (1.1 in), 4 July 1936 Jul Aug: 70.9 mm (2.8 in), 20 August 1909 Aug Sep: 52.8 mm (2.1 in), 3 September 1911 Sep Oct: 36.3 mm (1.4 in), 7 October 1894 Oct Nov: 45.0 mm (1.8 in), 30 November 1933 Nov Dec: 53.3 mm (2.1 in), 27 December 1907 Dec
The wettest day on record for each calendar month at Chepstowe. The most was 70.9 mm (2.8 in) on 20 August 1909.
Record daily precipitation for each month at Chepstowe
MonthRecord daily precipitation (mm)Date
Jan60.2 mm (2.4 in)21 January 1904
Feb59.9 mm (2.4 in)15 February 1913
Mar49.5 mm (1.9 in)6 March 1910
Apr45.7 mm (1.8 in)8 April 1889
May42.4 mm (1.7 in)5 May 1917
Jun37.6 mm (1.5 in)29 June 1900
Jul28.7 mm (1.1 in)4 July 1936
Aug70.9 mm (2.8 in)20 August 1909
Sep52.8 mm (2.1 in)3 September 1911
Oct36.3 mm (1.4 in)7 October 1894
Nov45.0 mm (1.8 in)30 November 1933
Dec53.3 mm (2.1 in)27 December 1907

Latest Records

20
Latest records at Chepstowe
DateStationRecordValueBeat old record byOld record stoodSignificance
5 April 1950Chepstowe, AUdaily rain (Tie)12.7 mm (0.5 in)tie47 years5 of 100 (Routine)
4 April 1950Chepstowe, AUdaily rain33.0 mm (1.3 in)8.4 mm (0.33 in)16 years22 of 100 (Routine)
12 March 1950Chepstowe, AUdaily rain12.7 mm (0.5 in)6.1 mm (0.24 in)32 years20 of 100 (Routine)
2 February 1950Chepstowe, AUdaily rain25.1 mm (1.0 in)3.8 mm (0.15 in)40 years22 of 100 (Routine)
1 February 1950Chepstowe, AUdaily rain3.8 mm (0.15 in)0.2 mm (0.01 in)15 years10 of 100 (Routine)
12 November 1949Chepstowe, AUdaily rain20.8 mm (0.8 in)6.3 mm (0.25 in)44 years20 of 100 (Routine)
8 March 1949Chepstowe, AUdaily rain20.3 mm (0.8 in)5.3 mm (0.21 in)38 years20 of 100 (Routine)
28 February 1949Chepstowe, AUdaily rain26.7 mm (1.1 in)21.9 mm (0.9 in)43 years42 of 100 (Notable)
20 February 1949Chepstowe, AUdaily rain16.8 mm (0.7 in)3.8 mm (0.15 in)52 years20 of 100 (Routine)
1 September 1948Chepstowe, AUdaily rain42.2 mm (1.7 in)30.0 mm (1.2 in)6 years47 of 100 (Notable)
17 August 1948Chepstowe, AUdaily rain6.6 mm (0.26 in)2.3 mm (0.09 in)58 years20 of 100 (Routine)
7 June 1948Chepstowe, AUdaily rain15.5 mm (0.6 in)4.8 mm (0.19 in)48 years20 of 100 (Routine)
25 May 1948Chepstowe, AUdaily rain5.8 mm (0.23 in)1.2 mm (0.05 in)45 years20 of 100 (Routine)
6 May 1948Chepstowe, AUdaily rain17.3 mm (0.7 in)1.0 mm (0.04 in)54 years20 of 100 (Routine)
29 April 1948Chepstowe, AUdaily rain13.5 mm (0.5 in)3.6 mm (0.14 in)13 years14 of 100 (Routine)
11 April 1948Chepstowe, AUdaily rain25.4 mm (1.0 in)9.7 mm (0.38 in)33 years30 of 100 (Routine)
21 December 1947Chepstowe, AUdaily rain14.0 mm (0.6 in)3.8 mm (0.15 in)57 years20 of 100 (Routine)
9 November 1947Chepstowe, AUdaily rain15.5 mm (0.6 in)5.6 mm (0.22 in)48 years20 of 100 (Routine)
28 July 1947Chepstowe, AUdaily rain16.5 mm (0.6 in)5.3 mm (0.21 in)29 years20 of 100 (Routine)
17 July 1947Chepstowe, AUdaily rain (Tie)10.9 mm (0.4 in)tie54 years5 of 100 (Routine)

Extremes by Year

1887 to 1950
Yearly extremes at Chepstowe: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)70.9 mm (2.8 in)190938.0 mm (1.5 in)52
Wettest five days (Rx5day)118.0 mm (4.6 in)191159.7 mm (2.3 in)52
Longest dry spell (CDD)56 days193626 days52

Wettest day (Rx1day)

Wettest day (Rx1day) at Chepstowe by year The wettest day of the year at Chepstowe, 1887 to 1950. The record is 70.9 mm (2.8 in) in 1909, marked on the chart; the median year is 38.0 mm (1.5 in). 020406080190019201940Record: 70.9 mm (2.8 in) in 1909
The wettest day of the year at Chepstowe, 1887 to 1950. The record is 70.9 mm (2.8 in) in 1909, marked on the chart; the median year is 38.0 mm (1.5 in).
Wettest day (Rx1day) at Chepstowe by year
YearWettest day (Rx1day)
188732.8 mm (1.3 in)
188830.5 mm (1.2 in)
188945.7 mm (1.8 in)
189023.6 mm (0.9 in)
189128.4 mm (1.1 in)
189243.2 mm (1.7 in)
189338.6 mm (1.5 in)
189436.3 mm (1.4 in)
189525.4 mm (1.0 in)
189624.4 mm (1.0 in)
189748.3 mm (1.9 in)
189833.3 mm (1.3 in)
189939.6 mm (1.6 in)
190037.6 mm (1.5 in)
190143.2 mm (1.7 in)
190233.3 mm (1.3 in)
190341.7 mm (1.6 in)
190460.2 mm (2.4 in)
190541.1 mm (1.6 in)
190638.9 mm (1.5 in)
190753.3 mm (2.1 in)
190832.0 mm (1.3 in)
190970.9 mm (2.8 in)
191049.5 mm (1.9 in)
191152.8 mm (2.1 in)
191225.1 mm (1.0 in)
191359.9 mm (2.4 in)
191445.5 mm (1.8 in)
191519.1 mm (0.8 in)
191637.6 mm (1.5 in)
191742.4 mm (1.7 in)
191838.4 mm (1.5 in)
191939.6 mm (1.6 in)
193239.9 mm (1.6 in)
193345.0 mm (1.8 in)
193434.3 mm (1.4 in)
193519.6 mm (0.8 in)
193628.7 mm (1.1 in)
193749.0 mm (1.9 in)
193826.9 mm (1.1 in)
193939.6 mm (1.6 in)
194028.4 mm (1.1 in)
194139.6 mm (1.6 in)
194229.2 mm (1.1 in)
194321.8 mm (0.9 in)
194435.6 mm (1.4 in)
194553.3 mm (2.1 in)
194637.6 mm (1.5 in)
194723.4 mm (0.9 in)
194842.2 mm (1.7 in)
194926.7 mm (1.1 in)
195033.0 mm (1.3 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Chepstowe by year The wettest five days of the year at Chepstowe, 1887 to 1950. The record is 118.0 mm (4.6 in) in 1911, marked on the chart; the median year is 59.7 mm (2.3 in). 255075100125190019201940Record: 118.0 mm (4.6 in) in 1911
The wettest five days of the year at Chepstowe, 1887 to 1950. The record is 118.0 mm (4.6 in) in 1911, marked on the chart; the median year is 59.7 mm (2.3 in).
Wettest five days (Rx5day) at Chepstowe by year
YearWettest five days (Rx5day)
188759.4 mm (2.3 in)
188847.2 mm (1.9 in)
188977.5 mm (3.1 in)
189034.9 mm (1.4 in)
189155.1 mm (2.2 in)
189270.7 mm (2.8 in)
189371.0 mm (2.8 in)
189468.5 mm (2.7 in)
189546.4 mm (1.8 in)
189643.9 mm (1.7 in)
189755.3 mm (2.2 in)
189839.6 mm (1.6 in)
189962.8 mm (2.5 in)
190057.2 mm (2.3 in)
190181.3 mm (3.2 in)
190270.6 mm (2.8 in)
190374.4 mm (2.9 in)
190466.8 mm (2.6 in)
190557.5 mm (2.3 in)
190673.7 mm (2.9 in)
190793.2 mm (3.7 in)
190844.5 mm (1.8 in)
190987.8 mm (3.5 in)
191087.4 mm (3.4 in)
1911118.0 mm (4.6 in)
191262.0 mm (2.4 in)
191359.9 mm (2.4 in)
191466.5 mm (2.6 in)
191540.3 mm (1.6 in)
191698.5 mm (3.9 in)
191763.3 mm (2.5 in)
191855.3 mm (2.2 in)
191956.8 mm (2.2 in)
193250.3 mm (2.0 in)
1933106.7 mm (4.2 in)
193463.3 mm (2.5 in)
193547.6 mm (1.9 in)
193660.2 mm (2.4 in)
193768.1 mm (2.7 in)
193831.0 mm (1.2 in)
193962.0 mm (2.4 in)
194036.5 mm (1.4 in)
194178.5 mm (3.1 in)
194238.9 mm (1.5 in)
194330.9 mm (1.2 in)
194438.0 mm (1.5 in)
194559.4 mm (2.3 in)
194688.6 mm (3.5 in)
194741.9 mm (1.6 in)
194852.3 mm (2.1 in)
194932.3 mm (1.3 in)
195052.5 mm (2.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Chepstowe by year The longest dry spell of the year at Chepstowe, 1887 to 1950. The record is 56 days in 1936, marked on the chart; the median year is 26 days. 0204060190019201940Record: 56 days in 1936
The longest dry spell of the year at Chepstowe, 1887 to 1950. The record is 56 days in 1936, marked on the chart; the median year is 26 days.
Longest dry spell (CDD) at Chepstowe by year
YearLongest dry spell (CDD)
188712 days
188836 days
188921 days
189018 days
189127 days
189223 days
189325 days
189421 days
189544 days
189636 days
189732 days
189822 days
189931 days
190020 days
190127 days
190226 days
190316 days
190431 days
190539 days
190634 days
190723 days
190828 days
190930 days
191023 days
191133 days
191232 days
191333 days
191443 days
191532 days
191626 days
191712 days
191818 days
191929 days
193226 days
193324 days
193445 days
193526 days
193656 days
193726 days
193819 days
193923 days
194019 days
194120 days
194219 days
194329 days
194418 days
194529 days
194617 days
194726 days
194838 days
194924 days
195024 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, 1888 to 1949

A day with at least 37.1 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 67.4 mm (2.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Chepstowe: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years37.1 mm (1.5 in)
5 years47.1 mm (1.9 in)
10 years52.9 mm (2.1 in)
25 years59.3 mm (2.3 in)
50 years63.6 mm (2.5 in)
100 years67.4 mm (2.7 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 1888 to 1949.

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: 70.9 mm (2.8 in) in 1909; 60.2 mm (2.4 in) in 1904; 59.9 mm (2.4 in) in 1913.

Download the Data

  • Data for Chepstowe standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Chepstowe 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

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