The climate may best be described as subtropical, with average annual rainfall varying between 500 mm and 700 mm. Droughts, floods, frosts and heatwaves, together with unreliable rainfall, are all climatic features that have a major influence on agricultural production throughout the region. Rainfall is predominantly in summer, with approximately 67% of the total falling in the October to March period. The highest rainfall occurs in the north-east and the lowest in the south-west. Chinchilla mean monthly rainfall (mm)| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | | 92 | 86 | 63 | 39 | 40 | 41 | 39 | 28 | 33 | 60 | 69 | 91 | 679 |
The closest Bureau of Meteorology stations are at Dalby and Miles. Climate averages (including mean maximums, minimums, and rainfall) from both stations are below:
The Bureau of Meteorology states “You should make sure you understand the “Climate Averages” before making use of the following details” (Bureau of Meteorology). DALBY POST OFFICECommenced: 1870 Last record: 1992
Latitude: 27.18 S Longitude: 151.26 E Elevation: 343.8 m | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | ANN |
Mean Daily
Max Temp
(deg C) | 31.9 | 31.1 | 29.6 | 26.6 | 22.7 | 19.4 | 18.8 | 20.7 | 24.2 | 27.5 | 30.2 | 31.6 | 26.2 | | | | | | | | | | | | | | |
Highest
Max Temp
(deg C) | 41.0 | 41.1 | 39.0 | 35.1 | 30.0 | 29.4 | 26.8 | 32.2 | 35.8 | 39.4 | 40.6 | 43.0 | 33.9 | | | | | | | | | | | | | | | Mean Daily
Min Temp
(deg C) | 18.4 | 18.2 | 16.4 | 12.3 | 8.4 | 5.5 | 4.2 | 5.2 | 8.4 | 12.6 | 15.6 | 17.6 | 11.9 | | | | | | | | | | | | | | | Lowest Min
Temp
(deg C) | 11.2 | 8.9 | 7.8 | 3.0 | -1.7 | -5.8 | -4.4 | -2.5 | -0.6 | 1.3 | 5.7 | 8.4 | -5.8 | | | | | | | | | | | | | | | Mean 9am
Relative
Humidity
(%) | 64 | 67 | 67 | 67 | 73 | 67 | 60 | 59 | 57 | 60 | 66 | 46.7 | 86 | | | | | | | | | | | | | | | Mean 3pm
Relative
Humidity
(%) | 43 | 46 | 46 | 44 | 47 | 48 | 45 | 41 | 37 | 40 | 38 | 40 | 43 | | | | | | | | | | | | | | | Mean
Rainfall
(mm) | 84.8 | 77.2 | 65.7 | 38.9 | 35.2 | 40.0 | 41.9 | 30.1 | 38.3 | 57.7 | 73.5 | 93.1 | 676.4 | | | | | | | | | | | | | | | Highest
Monthly
Rainfall
(mm) | 276.4 | 363.5 | 342.2 | 248.4 | 227.8 | 198.4 | 169.8 | 171.7 | 147.8 | 168.7 | 212.2 | 323.3 | 122.0 | | | | | | | | | | | | | | | Highest
Recorded
Daily Rain
(mm) | 119.2 | 136.0 | 109.7 | 67.3 | 69.1 | 99.4 | 94.0 | 60.7 | 61.7 | 95.0 | 152.1 | 118.4 | 152.1 | | | | | | | | | | | | | | | Lowest
Monthly
Rainfall
(mm) | 4.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.3 | 5.9 | 122.0 | | | | | | | | | | | | | | | Highest
Recorded
Daily Rain
(mm) | 119.2 | 136.0 | 109.7 | 67.3 | 69.1 | 99.4 | 94.0 | 60.7 | 61.7 | 95.0 | 152.1 | 118.4 | 152.1 | | | | | | | | | | | | | | | Mean Daily
Evaporation
(mm) | 7.9 | 7.2 | 7.2 | 5.6 | 4.0 | 3.0 | 2.9 | 3.5 | 4.9 | 5.5 | 7.3 | 8.0 | 5.5 |
MILES POST OFFICECommenced: 1885 Last record: 2000
Latitude: 26.66 S Longitude: 150.18 E Elevation: 304.8 m State: QLD | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | ANN |
Mean Daily
Max Temp
(deg C) | 33.1 | 32.2 | 30.7 | 27.4 | 23.2 | 19.7 | 19.3 | 21.3 | 25.0 | 28.5 | 31.2 | 32.8 | 27.0 | | | | | | | | | | | | | | |
Highest
Max Temp
(deg C) | 42.7 | 41.6 | 39.8 | 36.1 | 31.1 | 31.1 | 28.4 | 32.2 | 26.6 | 40.0 | 41.9 | 41.9 | 42.7 | | | | | | | | | | | | | | | Mean Daily
Min Temp
(deg C) | 19.5 | 19.2 | 17.0 | 12.4 | 8.0 | 5.0 | 3.7 | 4.9 | 8.5 | 13.1 | 16.3 | 18.4 | 12.1 | | | | | | | | | | | | | | | Lowest Min
Temp
(deg C) | 10.9 | 7.4 | 6.7 | 1.7 | -4.4 | -5.0 | -6.1 | -4.9 | -2.2 | -0.6 | 4.4 | 7.9 | -6.1 | | | | | | | | | | | | | | |
Mean 9am
Relative
Humidity
(%) | 60 | 63 | 63 | 63 | 70 | 74 | 71 | 63 | 55 | 53 | 52 | 56 | 62 | | | | | | | | | | | | | | | Mean 3pm
Relative
Humidity
(%) | 40 | 40 | 40 | 40 | 46 | 47 | 43 | 38 | 33 | 33 | 35 | 36 | 39 | | | | | | | | | | | | | | |
Mean
Rainfall
(mm) | 98.0 | 74.3 | 59.0 | 37.2 | 40.9 | 38.7 | 39.6 | 29.3 | 31.9 | 54.3 | 66.6 | 89.2 | 659.0 | | | | | | | | | | | | | | |
Highest
Monthly
Rainfall
(mm) | 317.5 | 251.8 | 472.9 | 211.0 | 239.6 | 195.6 | 267.0 | 170.6 | 150.6 | 194.4 | 262.6 | 442.5 | 115.4 | | | | | | | | | | | | | | |
Lowest
Monthly
Rainfall
(mm) | 9.7 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 4.3 | 0.0 | 1.5 | 115.4 | | | | | | | | | | | | | | | Highest
Recorded
Daily Rain
(mm) | 181.4 | 119.2 | 135.6 | 74.9 | 130.0 | 81.3 | 117.9 | 76.2 | 50.8 | 71.1 | 109.0 | 120.1 | 181.4 | | | | | | | | | | | | | | | Mean Daily
Evaporation
(mm) | 7.2 | 6.3 | 5.7 | 4.2 | 2.6 | 2.0 | 2.1 | 2.9 | 4.5 | 5.7 | 6.5 | 7.3 | 4.8 |
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