旬ごとの値
 |  |
 |  |
 |  |  |  |  |
 |  |  |  |  |  |
 |  |  |  |  |
苫小牧（胆振地方) 1989年（旬ごとの値） 詳細（気圧・降水量）
| 月 | 旬 | 気圧(hPa) | 降水量(mm) | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 現地 | 海面 | 合計 | 最大 | 各階級の日数 | ||||||||||||||||
| 平均 | 平均 | 最低 | 日 | 1時間 | 10分間 | ≧0.0mm | ≧0.5mm | ≧1.0mm | ≧10.0mm | ≧30.0mm | ≧50.0mm | ≧70.0mm | ≧100.0mm | |||||||
| 値 | 日 | 値 | 日 | 値 | 日 | 値 | 日 | |||||||||||||
| 上旬 | 1017.7 | 1019.1 | -- | 9.0 | 4.5 | 01 | 2.0 | 01 | 1.0 | 03 | 4 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1021.2 | 1022.6 | -- | 5.5 | 3.0 | 14 | 1.0 | 20* | 1.0 | 14 | 7 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1014.0 | 1015.4 | -- | 5.5 | 4.0 | 27 | 1.0 | 27 | 0.5 | 27* | 8 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1010.5 | 1011.9 | -- | 0.0 | 0.0 | 06* | 0.0 | 06* | 0.0 | 06* | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1015.9 | 1017.3 | -- | 5.5 | 4.0 | 20 | 4.0 | 20 | 1.5 | 20 | 6 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1022.1 | 1023.5 | -- | 5.0 | 3.0 | 28 | 1.5 | 28 | 1.0 | 28 | 3 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1015.9 | 1017.3 | -- | 51.5 | 39.0 | 04 | 3.5 | 04 | 1.0 | 04* | 9 | 7 | 6 | 1 | 1 | 0 | 0 | 0 | ||
| 中旬 | 1008.2 | 1009.6 | -- | 23.5 | 9.0 | 11 | 6.0 | 11 | 2.0 | 11 | 9 | 6 | 5 | 0 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1013.7 | 1015.1 | -- | 15.5 | 8.5 | 25 | 2.5 | 31 | 1.0 | 31* | 7 | 4 | 3 | 0 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1009.2 | 1010.5 | -- | 45.5 | 36.5 | 09 | 8.0 | 09 | 2.5 | 09 | 6 | 5 | 3 | 1 | 1 | 0 | 0 | 0 | ||
| 中旬 | 1009.0 | 1010.3 | -- | 27.5 | 24.0 | 16 | 7.0 | 16 | 2.0 | 16 | 5 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1012.0 | 1013.3 | -- | 6.0 | 5.5 | 27 | 1.5 | 27 | 0.5 | 28* | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1011.8 | 1013.1 | -- | 7.5 | 7.5 | 09 | 4.5 | 09 | 1.5 | 09 | 5 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1011.4 | 1012.7 | -- | 31.5 | 13.5 | 13 | 4.0 | 14 | 1.5 | 14 | 5 | 4 | 4 | 2 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1006.9 | 1008.2 | -- | 42.5 | 20.0 | 31 | 4.5 | 31* | 4.0 | 21 | 8 | 5 | 5 | 1 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1011.5 | 1012.8 | -- | 25.0 | 24.5 | 06 | 12.5 | 06 | 4.0 | 06 | 4 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1012.7 | 1014.0 | -- | 38.5 | 31.5 | 16 | 7.0 | 16 | 3.0 | 16 | 6 | 5 | 4 | 1 | 1 | 0 | 0 | 0 | ||
| 下旬 | 1009.6 | 1010.9 | -- | 160.0 | 100.5 | 29 | 16.5 | 28 | 5.0 | 28 | 9 | 5 | 4 | 3 | 1 | 1 | 1 | 1 | ||
| 上旬 | 1012.5 | 1013.8 | -- | 8.0 | 3.5 | 09 | 2.5 | 09 | 1.0 | 09 | 6 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1013.5 | 1014.8 | -- | 54.0 | 29.0 | 19 | 11.5 | 19 | 5.5 | 19 | 10 | 7 | 5 | 2 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1014.1 | 1015.4 | -- | 4.0 | 2.0 | 31 | 1.0 | 31 | 0.5 | 31* | 9 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1006.3 | 1007.5 | -- | 11.5 | 10.0 | 10 | 9.5 | 10 | 7.0 | 10 | 7 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1007.9 | 1009.2 | -- | 64.5 | 48.5 | 14 | 11.5 | 14 | 4.5 | 14 | 3 | 2 | 2 | 2 | 1 | 0 | 0 | 0 | ||
| 下旬 | 1009.1 | 1010.4 | -- | 132.0 | 95.0 | 28 | 21.5 | 28 | 5.0 | 28* | 8 | 7 | 6 | 2 | 1 | 1 | 1 | 0 | ||
| 上旬 | 1010.1 | 1011.4 | -- | 78.5 | 42.0 | 03 | 11.0 | 03 | 6.5 | 03 | 8 | 5 | 4 | 3 | 1 | 0 | 0 | 0 | ||
| 中旬 | 1010.0 | 1011.3 | -- | 43.0 | 19.5 | 18 | 8.0 | 20 | 3.0 | 20 | 7 | 5 | 5 | 2 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1012.2 | 1013.5 | -- | 36.0 | 26.5 | 28 | 7.0 | 28 | 3.5 | 25 | 6 | 4 | 3 | 1 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1016.8 | 1018.2 | -- | 36.0 | 26.0 | 06 | 16.5 | 06 | 13.5 | 06 | 4 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1014.0 | 1015.3 | -- | 27.0 | 14.5 | 16 | 11.0 | 16 | 6.0 | 16 | 8 | 5 | 4 | 1 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1013.4 | 1014.7 | -- | 24.0 | 21.5 | 22 | 12.5 | 22 | 5.0 | 22 | 8 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1017.8 | 1019.2 | -- | 73.0 | 29.5 | 07 | 8.0 | 07 | 2.0 | 07 | 5 | 5 | 5 | 3 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1017.2 | 1018.5 | -- | 93.0 | 34.5 | 18 | 9.5 | 13 | 3.5 | 13 | 7 | 6 | 5 | 3 | 2 | 0 | 0 | 0 | ||
| 下旬 | 1013.8 | 1015.1 | -- | 7.5 | 4.0 | 27 | 2.5 | 27 | 2.0 | 27 | 6 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1006.9 | 1008.3 | -- | 20.5 | 9.0 | 08 | 6.5 | 07 | 3.0 | 08 | 9 | 5 | 5 | 0 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1017.9 | 1019.3 | -- | 0.0 | 0.0 | 18* | 0.5 | 11 | 0.5 | 11 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1013.2 | 1014.6 | -- | 38.5 | 24.0 | 27 | 8.5 | 27 | 5.5 | 27* | 7 | 3 | 3 | 2 | 0 | 0 | 0 | 0 | ||