Hay (Miller Street) is a weather station located 93 m above sea level, 1 km from Hay. Its records go back to 1881: 47 years of temperature are available up to 2014, along with rainfall and a comparison with two reference normals. Closed series: the records of this station end in 2014. Over 1991–2020 the annual mean temperature there is 17.6 °C, noticeably higher than over 1961–1990 (17.2 °C): a difference of 0.3 °C. The warmest year of the series is 2009 (18.6 °C) and the coldest 1995 (16.2 °C). The last complete year, 2013, ranks 3 out of 47, from warmest to coldest. Over 1961–2014, the annual mean temperature changes by +0.12 °C per decade. The station ranks 191 out of 227 stations, from the fastest rise to the slowest.
Annual mean temperature since 1881
The first ten years of the series (1957–1966) average 17.1 °C; the last ten (2003–2013) average 17.8 °C, a difference of +0.7 °C. Of the ten warmest years in the series, 5 fall after 1999. The warmest is 2009 (18.6 °C). The ten-year running mean peaks at 17.8 °C (2013) and bottoms out at 17.0 °C (2000).
Annual rainfall since 1881
On average 363 mm of rain falls per year over the 134 documented years. The wettest year, 1974, received 837 mm; the driest, 1940, only 157 mm, which is 5.3 times less. The 1991–2020 normal (366 mm per year) is 37 mm (9.2 %) below the 1961–1990 one (403 mm). Over 1991–2020, February is on average the wettest month (38 mm) and April the driest (17 mm). Between 1995 and 2014, 10 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 | 24.9 °C | 25.8 °C | +0.9 °C | 35 mm | 32 mm | −3 mm |
| February | 24.8 °C | 25.0 °C | +0.2 °C | 28 mm | 38 mm | +10 mm |
| March | 21.9 °C | 21.7 °C | −0.2 °C | 35 mm | 30 mm | −5 mm |
| April | 17.3 °C | 17.2 °C | −0.1 °C | 36 mm | 17 mm | −19 mm |
| May | 13.3 °C | 13.4 °C | +0.1 °C | 44 mm | 25 mm | −19 mm |
| June | 10.1 °C | 10.7 °C | +0.6 °C | 30 mm | 32 mm | +2 mm |
| July | 9.2 °C | 9.8 °C | +0.6 °C | 31 mm | 35 mm | +4 mm |
| August | 11.0 °C | 11.3 °C | +0.3 °C | 36 mm | 27 mm | −9 mm |
| September | 13.6 °C | 14.3 °C | +0.7 °C | 35 mm | 31 mm | −4 mm |
| October | 17.1 °C | 17.2 °C | +0.1 °C | 38 mm | 31 mm | −7 mm |
| November | 20.5 °C | 21.1 °C | +0.6 °C | 25 mm | 33 mm | +8 mm |
| December | 23.2 °C | 23.3 °C | +0.1 °C | 30 mm | 35 mm | +5 mm |
The largest temperature change is in January (+0.9 °C) and the smallest in March (−0.2 °C); over the year the mean difference is +0.3 °C, and 10 months out of twelve are warmer than before. For rainfall, the largest difference is in February (+10 mm) and the smallest in April (−19 mm).
Records at Hay (Miller Street)
- Warmest year: 18.6 °C, in 2009
- Coldest year: 16.2 °C, in 1995
- Driest year: 157 mm, in 1940
- Wettest year: 837 mm, in 1974
- Warmest month: 29.3 °C, in January 1981
- Coldest month: 7.8 °C, in July 1968
- Wettest month: 204 mm, in February 1973
- Hottest day: 47.7 °C, on 5 January 2013
- Coldest day: −3.8 °C, on 3 August 2014
- Heaviest rain in one day: 121.9 mm, on 18 February 1895
2.4 °C separate the warmest year of the series from the coldest. Between the hottest and the coldest day on record, the range reaches 51.5 °C.
Temperature trend over 1961–2014
The regression line of annual mean temperature changes by +0.12 °C per decade between 1961 and 2014, about +0.6 °C over the whole period. That is slower than the median of the 227 stations (+0.19 °C per decade), by 0.07 °C per decade: the station ranks 191 out of 227.
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 Hay (Miller Street) 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 Hay (Miller Street)?
Over 1991–2020, the annual mean temperature at Hay (Miller Street) is 17.6 °C. It was 17.2 °C over 1961–1990, a difference of +0.3 °C.
What is the warmest year ever measured at Hay (Miller Street)?
Since records began in 1881, the warmest year at Hay (Miller Street) is 2009, at 18.6 °C on average. The coldest is 1995 (16.2 °C).
Is the climate at Hay (Miller Street) getting warmer?
Yes: at Hay (Miller Street), the annual mean temperature rises by 0.12 °C per decade between 1961 and 2014, +0.6 °C in total. 5 of the 10 warmest years in the series fall after 1999.
Towns near this station
Neighbouring stations