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| Claremorris 1971–2000 averages
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| TEMPERATURE (degrees Celsius) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| mean daily max | 7.5 | 8.1 | 9.8 | 12.1 | 14.9 | 17.0 | 18.9 | 18.7 | 16.4 | 13.1 | 9.9 | 8.1 | 12.9 |
| mean daily min | 1.7 | 1.8 | 2.9 | 3.9 | 6.1 | 8.8 | 11.0 | 10.6 | 8.6 | 6.4 | 3.5 | 2.5 | 5.7 |
| mean temperature | 4.6 | 4.9 | 6.3 | 8.0 | 10.5 | 12.9 | 15.0 | 14.7 | 12.5 | 9.8 | 6.7 | 5.3 | 9.3 |
| absolute max. | 13.3 | 13.6 | 16.2 | 22.3 | 25.4 | 29.8 | 30.5 | 28.0 | 25.1 | 19.9 | 15.9 | 14.3 | 30.5 |
| min. maximum | -2.9 | 0.1 | 0.0 | 5.0 | 6.1 | 11.2 | 11.7 | 12.2 | 10.5 | 6.8 | 1.3 | -1.5 | -2.9 |
| max. minimum | 11.3 | 10.9 | 10.4 | 11.3 | 14.2 | 15.3 | 17.0 | 16.7 | 16.7 | 15.6 | 12.5 | 12.1 | 17.0 |
| absolute min. | -11.7 | -9.1 | -8.0 | -5.5 | -3.1 | 0.7 | 0.6 | 2.6 | -1.2 | -4.3 | -5.3 | -12.9 | -12.9 |
| mean num. of days with air frost | 8.7 | 7.3 | 5.2 | 3.3 | 0.8 | 0.0 | 0.0 | 0.0 | 0.1 | 1.2 | 5.3 | 7.6 | 39.5 |
| mean num. of days with ground frost | 15 | 14 | 12 | 10 | 5 | 0 | 0 | 0 | 2 | 5 | 12 | 14 | 89 |
| mean 5cm soil | 3.2 | 3.1 | 4.5 | 7.3 | 10.9 | 14.1 | 15.5 | 14.6 | 12.0 | 8.9 | 5.3 | 4.2 | 8.6 |
| mean 10cm soil | 3.5 | 3.4 | 4.7 | 7.0 | 10.3 | 13.5 | 15.0 | 14.3 | 12.0 | 9.3 | 5.8 | 4.5 | 8.6 |
| mean 20cm soil | 4.2 | 4.2 | 5.5 | 7.7 | 10.7 | 13.8 | 15.3 | 15.0 | 13.0 | 10.3 | 6.9 | 5.3 | 9.3 |
| RELATIVE HUMIDITY (%) | | | | | | | | | | | | | |
| mean at 0900UTC | 90.7 | 90.3 | 88.7 | 82.5 | 79.3 | 80.4 | 83.6 | 86.2 | 88.1 | 91.6 | 91.2 | 91.0 | 87.0 |
| mean at 1500UTC | 85.6 | 79.8 | 75.7 | 67.9 | 68.0 | 71.1 | 73.2 | 73.4 | 74.7 | 80.2 | 84.4 | 88.1 | 76.8 |
| SUNSHINE (hours) | | | | | | | | | | | | | |
| mean daily duration | 1.3 | 1.9 | 2.6 | 4.3 | 5.0 | 4.4 | 3.7 | 3.8 | 3.2 | 2.4 | 1.7 | 0.9 | 2.9 |
| greatest daily duration | 7.9 | 9.3 | 10.8 | 13.4 | 15.1 | 15.8 | 14.8 | 13.7 | 11.4 | 9.3 | 8.6 | 6.7 | 15.8 |
| mean num. of days with no sun | 9.5 | 7.3 | 5.7 | 2.8 | 2.0 | 2.2 | 2.2 | 2.1 | 3.4 | 5.0 | 8.1 | 10.8 | 61.1 |
| RAINFALL (mm) | | | | | | | | | | | | | |
| mean monthly total | 127.9 | 102.1 | 101.6 | 63.7 | 68.1 | 64.5 | 70.1 | 95.7 | 94.3 | 128.2 | 127.7 | 129.6 | 1173.6 |
| greatest daily total | 31.5 | 107.0 | 26.8 | 34.0 | 51.3 | 38.0 | 42.2 | 49.7 | 41.0 | 46.7 | 54.9 | 41.2 | 107.0 |
| mean num. of days with >= 0.2mm | 21 | 18 | 21 | 16 | 16 | 15 | 17 | 18 | 18 | 21 | 21 | 22 | 224 |
| mean num. of days with >= 1.0mm | 18 | 15 | 17 | 12 | 12 | 11 | 12 | 13 | 14 | 17 | 18 | 17 | 176 |
| mean num. of days with >= 5.0mm | 9 | 7 | 7 | 4 | 4 | 4 | 4 | 6 | 5 | 8 | 8 | 9 | 75 |
| WIND (knots) | | | | | | | | | | | | | |
| mean monthly speed | 10.2 | 10.3 | 10.2 | 8.7 | 8.1 | 7.7 | 7.2 | 6.8 | 7.7 | 8.7 | 8.9 | 9.7 | 8.7 |
| max. gust | 96 | 85 | 74 | 74 | 62 | 51 | 66 | 78 | 58 | 70 | 67 | 81 | 96 |
| max. mean 10-minute speed | 59 | 48 | 45 | 41 | 41 | 34 | 39 | 32 | 37 | 46 | 40 | 52 | 59 |
| mean num. of days with gales | 1.4 | 0.9 | 0.7 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.1 | 0.3 | 0.4 | 0.8 | 4.8 |
| WEATHER (mean no. of days with..) | | | | | | | | | | | | | |
| snow or sleet | 5.7 | 4.4 | 3.8 | 1.6 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 1.2 | 3.1 | 20.0 |
| snow lying at 0900UTC | 2.3 | 0.7 | 0.7 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.7 | 4.6 |
| hail | 4.4 | 3.2 | 5.4 | 3.2 | 1.6 | 0.4 | 0.1 | 0.0 | 0.7 | 0.8 | 2.6 | 2.7 | 25.2 |
| thunder | 0.3 | 0.1 | 0.2 | 0.2 | 0.4 | 0.7 | 0.7 | 0.2 | 0.2 | 0.2 | 0.3 | 0.5 | 4.0 |
| fog | 3.4 | 2.3 | 1.6 | 1.8 | 1.2 | 1.4 | 2.0 | 3.2 | 3.3 | 3.2 | 2.6 | 3.4 | 29.5 |