| Tahun Data | : | 1999 |
| Nama Stasiun | : | TRMM-2260 |
| Lokasi Stasiun | : | Desa Bakalan, Kecamatan Polokarto, Sukoharjo, Provinsi Jawa Tengah |
| Longitude | : | 110.875000 |
| Latitude | : | -7.625000 |
| Tanggal | Jan | Feb | Mar | Apr | Mei | Jun | Jul | Agu | Sep | Okt | Nov | Des |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 0.000 | 0.738 | 4.081 | 0.000 | 8.305 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 26.718 | 0.000 |
| 2 | 1.507 | 42.997 | 0.934 | 0.056 | 0.000 | 0.000 | 2.933 | 0.000 | 0.000 | 0.000 | 7.093 | 3.954 |
| 3 | 0.000 | 9.975 | 2.557 | 1.050 | 11.881 | 5.360 | 0.000 | 0.000 | 0.000 | 0.000 | 16.404 | 17.994 |
| 4 | 11.617 | 2.190 | 1.549 | 41.257 | 15.553 | 1.256 | 18.285 | 0.000 | 0.000 | 3.387 | 4.506 | 16.220 |
| 5 | 0.000 | 0.000 | 2.680 | 5.045 | 0.000 | 0.000 | 34.371 | 2.399 | 0.000 | 0.000 | 4.066 | 17.657 |
| 6 | 0.000 | 10.118 | 76.752 | 16.840 | 0.000 | 0.837 | 0.000 | 0.000 | 0.000 | 2.689 | 1.778 | 2.112 |
| 7 | 5.913 | 0.857 | 14.013 | 2.044 | 1.653 | 9.547 | 0.000 | 0.000 | 0.169 | 0.000 | 0.000 | 8.245 |
| 8 | 12.521 | 2.119 | 14.824 | 6.901 | 4.614 | 0.000 | 0.000 | 0.000 | 0.000 | 0.078 | 10.684 | 8.042 |
| 9 | 9.112 | 13.023 | 17.209 | 8.589 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 8.662 | 0.774 | 7.661 |
| 10 | 20.196 | 4.333 | 24.363 | 1.482 | 0.000 | 6.532 | 0.000 | 8.661 | 0.000 | 6.154 | 17.759 | 6.088 |
| 11 | 7.281 | 0.000 | 8.580 | 2.063 | 2.461 | 0.000 | 0.000 | 10.044 | 0.000 | 3.387 | 23.885 | 0.674 |
| 12 | 10.944 | 2.381 | 11.678 | 23.591 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 1.732 | 1.179 | 14.715 |
| 13 | 1.832 | 12.618 | 36.655 | 66.199 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 12.464 | 17.091 | 16.220 |
| 14 | 6.469 | 0.000 | 1.918 | 26.705 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 9.490 | 6.882 | 4.830 |
| 15 | 0.487 | 19.451 | 4.622 | 7.539 | 1.730 | 0.000 | 0.000 | 8.661 | 0.000 | 16.213 | 1.443 | 0.449 |
| 16 | 8.626 | 19.427 | 23.552 | 11.983 | 0.019 | 0.000 | 0.000 | 0.000 | 0.000 | 5.353 | 10.420 | 1.101 |
| 17 | 14.051 | 14.642 | 20.331 | 0.675 | 0.000 | 0.000 | 1.879 | 0.000 | 0.000 | 4.680 | 10.314 | 10.806 |
| 18 | 5.449 | 12.094 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 9.050 | 5.263 | 1.393 |
| 19 | 34.317 | 6.238 | 4.032 | 0.000 | 0.115 | 0.000 | 0.000 | 0.000 | 0.000 | 0.078 | 6.495 | 1.775 |
| 20 | 0.301 | 19.213 | 1.082 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 10.990 | 8.642 | 7.166 |
| 21 | 15.048 | 13.975 | 59.642 | 0.000 | 0.000 | 25.793 | 0.000 | 1.870 | 0.000 | 7.732 | 15.894 | 20.398 |
| 22 | 1.438 | 8.523 | 0.738 | 0.000 | 0.000 | 5.778 | 0.000 | 0.000 | 0.000 | 0.000 | 29.288 | 41.560 |
| 23 | 8.463 | 26.736 | 30.780 | 0.000 | 0.000 | 0.000 | 0.000 | 2.765 | 0.000 | 0.000 | 8.625 | 18.736 |
| 24 | 34.919 | 0.000 | 6.171 | 0.000 | 0.000 | 0.000 | 1.237 | 0.000 | 0.000 | 10.447 | 20.488 | 2.314 |
| 25 | 27.291 | 46.401 | 2.852 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 27.930 | 0.000 | 14.767 | 15.051 |
| 26 | 6.492 | 9.309 | 2.852 | 0.206 | 0.000 | 7.788 | 0.000 | 0.000 | 7.414 | 0.000 | 11.828 | 13.142 |
| 27 | 6.956 | 15.570 | 2.483 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 1.011 | 0.000 | 0.000 | 10.940 |
| 28 | 17.784 | 0.643 | 0.000 | 1.031 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 22.936 | 0.000 | 2.583 |
| 29 | 7.605 | - | 7.646 | 0.863 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 15.204 | 0.000 | 6.739 |
| 30 | 0.997 | - | 4.253 | 0.956 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 12.102 | 1.144 | 27.295 |
| 31 | 0.093 | - | 0.000 | - | 0.000 | - | 0.000 | 0.000 | - | 11.119 | - | 12.805 |
| Total | 277.71 | 313.57 | 388.83 | 225.08 | 46.33 | 62.89 | 58.71 | 34.40 | 36.52 | 173.95 | 283.43 | 318.67 |
| Hari Hujan | 27.00 | 24.00 | 28.00 | 20.00 | 9.00 | 8.00 | 5.00 | 6.00 | 4.00 | 21.00 | 26.00 | 30.00 |
| Max | 34.919 | 46.401 | 76.752 | 66.199 | 15.553 | 25.793 | 34.371 | 10.044 | 27.930 | 22.936 | 29.288 | 41.560 |
| Avg | 8.96 | 11.20 | 12.54 | 7.50 | 1.49 | 2.10 | 1.89 | 1.11 | 1.22 | 5.61 | 9.45 | 10.28 |
Berdasarkan data hujan TRMM di Grid TRMM-2260, yang terletak di Desa Bakalan, Kecamatan Polokarto, Sukoharjo, Provinsi Jawa Tengah, curah hujan tahunan yang terjadi pada tahun 1999 adalah sebesar 2,220.08 mm. Dengan jumlah hari hujan tahunan adalah 208 hari (56.99%). Curah hujan harian maksimum tahunan yang tercatat adalah sebesar 76.75 mm yang terjadi pada tanggal 6 Maret 1999.
