Thargomindah is a weather station located 131 m above sea level. Its records go back to 1957: 50 years of temperature are available up to 2025, along with rainfall and a comparison with two reference normals. Over 1991–2020 the annual mean temperature there is 23.0 °C, noticeably higher than over 1961–1990 (22.4 °C): a difference of 0.6 °C. The warmest year of the series is 2017 (24.1 °C) and the coldest 1960 (20.5 °C). The last complete year, 2025, ranks 5 out of 50, from warmest to coldest. Over 1961–2025, the annual mean temperature changes by +0.19 °C per decade. The station ranks 118 out of 227 stations, from the fastest rise to the slowest.
Annual mean temperature since 1957
The first ten years of the series (1957–1971) average 22.2 °C; the last ten (2015–2025) average 23.3 °C, a difference of +1.2 °C. Of the ten warmest years in the series, 8 fall after 1999. The warmest is 2017 (24.1 °C). The ten-year running mean peaks at 23.3 °C (2025) and bottoms out at 22.4 °C (1992).
Annual rainfall since 1957
On average 269 mm of rain falls per year over the 25 documented years. The wettest year, 2010, received 796 mm; the driest, 2002, only 62 mm, which is 12.8 times less. Over 1991–2020, February is on average the wettest month (42 mm) and August the driest (10 mm). Between 2005 and 2024, 9 years out of 20 exceeded the series average.
Monthly normals: 1961–1990 against 1991–2020
The table compares, month by month, the mean temperature and the rainfall total of two thirty-year reference periods. The difference column shows what the recent period changes compared with the earlier one.
| Month | Temp. 1961–1990 | Temp. 1991–2020 | Difference | Rain 1961–1990 | Rain 1991–2020 | Difference |
|---|---|---|---|---|---|---|
| January | 31.1 °C | 32.0 °C | +0.9 °C | – | 34 mm | – |
| February | 30.6 °C | 30.8 °C | +0.2 °C | – | 42 mm | – |
| March | 27.4 °C | 28.0 °C | +0.6 °C | – | 40 mm | – |
| April | 22.4 °C | 22.9 °C | +0.5 °C | – | 14 mm | – |
| May | 17.5 °C | 18.0 °C | +0.5 °C | – | 16 mm | – |
| June | 13.6 °C | 14.1 °C | +0.5 °C | – | 15 mm | – |
| July | 12.6 °C | 13.4 °C | +0.8 °C | – | 13 mm | – |
| August | 14.7 °C | 15.5 °C | +0.8 °C | – | 10 mm | – |
| September | 18.7 °C | 20.0 °C | +1.3 °C | – | 11 mm | – |
| October | 23.5 °C | 23.9 °C | +0.4 °C | – | 14 mm | – |
| November | 26.7 °C | 27.5 °C | +0.8 °C | – | 30 mm | – |
| December | 30.1 °C | 30.2 °C | +0.1 °C | – | 24 mm | – |
The largest temperature change is in September (+1.3 °C) and the smallest in December (+0.1 °C); over the year the mean difference is +0.6 °C, and 12 months out of twelve are warmer than before.
Records at Thargomindah
- Warmest year: 24.1 °C, in 2017
- Coldest year: 20.5 °C, in 1960
- Driest year: 62 mm, in 2002
- Wettest year: 796 mm, in 2010
- Warmest month: 34.8 °C, in January 2018
- Coldest month: 10.7 °C, in July 1957
- Wettest month: 199 mm, in February 2010
- Hottest day: 48.8 °C, on 13 January 2013
- Coldest day: −2.5 °C, on 27 July 1959
- Heaviest rain in one day: 123.4 mm, on 19 February 2014
3.6 °C separate the warmest year of the series from the coldest. Between the hottest and the coldest day on record, the range reaches 51.3 °C.
Temperature trend over 1961–2025
The regression line of annual mean temperature changes by +0.19 °C per decade between 1961 and 2025, about +1.2 °C over the whole period. That is slower than the median of the 227 stations (+0.19 °C per decade), by 0.00 °C per decade: the station ranks 118 out of 227.
The last 24 months against the 1991–2020 normal
Over the last 19 months (October 2024 to September 2026), 10 months out of 15 were warmer than the 1991–2020 normal for the same month; the mean departure is +0.9 °C. The highest departure was in October 2025 (+2.9 °C); the lowest, in August 2025 (−0.9 °C).
| Month | Temperature | Departure from normal | Rain | Normal rain |
|---|---|---|---|---|
| October 2024 | 26.6 °C | +2.7 °C | 1 mm | 14 mm |
| November 2024 | 29.6 °C | +2.1 °C | 10 mm | 30 mm |
| December 2024 | 32.0 °C | +1.8 °C | – | 24 mm |
| January 2025 | 33.7 °C | +1.7 °C | 5 mm | 34 mm |
| February 2025 | 32.4 °C | +1.6 °C | 1 mm | 42 mm |
| March 2025 | 29.4 °C | +1.4 °C | 193 mm | 40 mm |
| April 2025 | 22.9 °C | 0.0 °C | – | 14 mm |
| May 2025 | 18.0 °C | 0.0 °C | 6 mm | 16 mm |
| June 2025 | 13.7 °C | −0.4 °C | 7 mm | 15 mm |
| July 2025 | 13.1 °C | −0.3 °C | 50 mm | 13 mm |
| August 2025 | 14.6 °C | −0.9 °C | – | 10 mm |
| September 2025 | 20.2 °C | +0.2 °C | 40 mm | 11 mm |
| October 2025 | 26.8 °C | +2.9 °C | 15 mm | 14 mm |
| November 2025 | 27.7 °C | +0.2 °C | 2 mm | 30 mm |
| December 2025 | 31.2 °C | +1.0 °C | 13 mm | 24 mm |
| January 2026 | – | – | 4 mm | 34 mm |
| March 2026 | – | – | 14 mm | 40 mm |
| August 2026 | – | – | 20 mm | 10 mm |
| September 2026 | – | – | 0 mm | 11 mm |
Data source and licence
Data source: Bureau of Meteorology (ACORN-SAT) and NOAA NCEI (GHCN-Daily) (dataset “ACORN-SAT v2 daily (homogenised) + GHCN-Daily”), licence CC BY 4.0; Public domain (NOAA NCEI). Last updated: 29 October 2026.
The data for Thargomindah are shown as the source publishes them; this site does not correct them. A year is kept only if at least eleven months of measurements are available, and a normal is computed only with at least twenty years of data out of its thirty. Temperatures are rounded to 0.1 °C and rainfall to the millimetre. The station is one of 227 stations in Australia: the overview page lets you compare them.
Frequently asked questions
What is the annual mean temperature at Thargomindah?
Over 1991–2020, the annual mean temperature at Thargomindah is 23.0 °C. It was 22.4 °C over 1961–1990, a difference of +0.6 °C.
What is the warmest year ever measured at Thargomindah?
Since records began in 1957, the warmest year at Thargomindah is 2017, at 24.1 °C on average. The coldest is 1960 (20.5 °C).
Is the climate at Thargomindah getting warmer?
Yes: at Thargomindah, the annual mean temperature rises by 0.19 °C per decade between 1961 and 2025, +1.2 °C in total. 8 of the 10 warmest years in the series fall after 1999.
Neighbouring stations