旬ごとの値
 |  |
 |  |
 |  |  |  |  |
 |  |  |  |  |  |
 |  |  |  |  |
苫小牧（胆振地方) 2001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 | 1009.5 | 1010.9 | 995.3 | 10 | 22.0 | 20.5 | 10 | 5.5 | 10 | 1.0 | 10 | 9 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 1010.1 | 1011.5 | 992.9 | 11 | 3.0 | 3.0 | 11 | 1.5 | 11 | 0.5 | 11 | 7 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1013.9 | 1015.3 | 1000.5 | 28 | 6.5 | 6.5 | 28 | 2.0 | 28 | 0.5 | 28 | 10 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 1013.3 | 1014.7 | 995.6 | 01 | 8.5 | 7.5 | 01 | 1.5 | 01 | 0.5 | 02* | 9 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 1014.9 | 1016.3 | 1007.6 | 18 | 0.0 | 0.0 | 19* | 0.0 | 19* | 0.0 | 19* | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1012.7 | 1014.1 | 1003.7 | 22 | 6.5 | 6.5 | 28 | 1.5 | 28 | 0.5 | 28 | 5 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 1006.6 | 1008.0 | 987.4 | 05 | 21.5 | 20.0 | 04 | 4.5 | 04 | 1.5 | 04 | 8 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 1008.2 | 1009.6 | 992.4 | 20 | 16.5 | 10.5 | 11 | 6.5 | 11 | 1.5 | 11 | 8 | 6 | 3 | 1 | 0 | 0 | 0 | 0 | |
| 下旬 | 1006.1 | 1007.5 | 992.4 | 21 | 25.5 | 20.0 | 26 | 3.5 | 26 | 1.0 | 26* | 10 | 5 | 3 | 1 | 0 | 0 | 0 | 0 | |
| 上旬 | 1014.6 | 1016.0 | 1002.4 | 03 | 11.0 | 8.5 | 02 | 2.0 | 02 | 0.5 | 05* | 8 | 4 | 3 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 1007.0 | 1008.3 | 993.8 | 13 | 20.0 | 13.5 | 12 | 4.5 | 12 | 1.5 | 12 | 7 | 6 | 4 | 1 | 0 | 0 | 0 | 0 | |
| 下旬 | 1012.7 | 1014.0 | 1003.6 | 24 | 3.0 | 2.0 | 24 | 1.0 | 24* | 0.5 | 24* | 4 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 1015.3 | 1016.7 | 1004.1 | 10 | 42.0 | 32.5 | 10 | 5.0 | 10 | 1.5 | 10 | 8 | 5 | 4 | 1 | 1 | 0 | 0 | 0 | |
| 中旬 | 1008.0 | 1009.3 | 1003.0 | 16 | 24.5 | 10.0 | 16 | 3.5 | 11 | 2.0 | 19 | 4 | 3 | 3 | 1 | 0 | 0 | 0 | 0 | |
| 下旬 | 1008.5 | 1009.8 | 997.3 | 31 | 74.0 | 71.5 | 31 | 10.5 | 31 | 3.5 | 31 | 9 | 4 | 2 | 1 | 1 | 1 | 1 | 0 | |
| 上旬 | 1007.7 | 1009.0 | 995.8 | 01 | 25.5 | 24.5 | 10 | 12.5 | 10 | 3.5 | 10 | 6 | 3 | 1 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 1006.8 | 1008.1 | 1001.3 | 19 | 15.0 | 10.5 | 20 | 2.5 | 20 | 1.0 | 20 | 5 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | |
| 下旬 | 1005.0 | 1006.3 | 998.8 | 28 | 5.5 | 3.0 | 21 | 1.0 | 27 | 0.5 | 27* | 6 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 1005.6 | 1006.9 | 997.3 | 06 | 63.0 | 37.0 | 03 | 18.0 | 03 | 6.5 | 03 | 10 | 7 | 5 | 2 | 1 | 0 | 0 | 0 | |
| 中旬 | 1006.9 | 1008.2 | 1002.2 | 12 | 46.5 | 18.0 | 11 | 7.5 | 16 | 4.5 | 16 | 9 | 7 | 4 | 2 | 0 | 0 | 0 | 0 | |
| 下旬 | 1010.2 | 1011.5 | 1001.7 | 23 | 41.0 | 19.5 | 30 | 7.5 | 30 | 2.5 | 22 | 10 | 5 | 4 | 2 | 0 | 0 | 0 | 0 | |
| 上旬 | 1013.2 | 1014.5 | 1009.8 | 09 | 23.0 | 18.5 | 03 | 13.5 | 03 | 4.5 | 03 | 9 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 1015.0 | 1016.3 | 1008.8 | 20 | 1.5 | 1.5 | 17 | 1.5 | 17 | 1.0 | 17 | 7 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1005.4 | 1006.7 | 987.6 | 23 | 127.5 | 62.0 | 27 | 12.5 | 23 | 4.0 | 23 | 8 | 8 | 5 | 3 | 1 | 1 | 0 | 0 | |
| 上旬 | 1013.9 | 1015.2 | 1005.6 | 01 | 88.0 | 58.0 | 07 | 14.5 | 07 | 3.0 | 07 | 6 | 5 | 5 | 2 | 1 | 1 | 0 | 0 | |
| 中旬 | 1010.4 | 1011.7 | 1002.3 | 18 | 172.5 | 150.0 | 11 | 15.5 | 11 | 3.0 | 11 | 8 | 5 | 4 | 2 | 1 | 1 | 1 | 1 | |
| 下旬 | 1016.1 | 1017.4 | 1010.9 | 25 | 1.0 | 0.5 | 22* | 0.5 | 22* | 0.5 | 22* | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 1017.1 | 1018.4 | 1003.0 | 02 | 29.0 | 19.0 | 02 | 3.5 | 02 | 1.0 | 02 | 8 | 5 | 3 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 1013.8 | 1015.1 | 1001.7 | 13 | 134.5 | 122.0 | 11 | 11.5 | 11 | 4.0 | 13 | 6 | 6 | 3 | 1 | 1 | 1 | 1 | 1 | |
| 下旬 | 1017.6 | 1018.9 | 1005.6 | 29* | 4.5 | 2.5 | 28 | 1.0 | 28* | 0.5 | 29* | 6 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 1016.5 | 1017.9 | 1000.3 | 06 | 21.5 | 12.0 | 06 | 5.0 | 06 | 2.0 | 06 | 7 | 6 | 3 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 1012.2 | 1013.5 | 1006.8 | 12 | 2.5 | 2.5 | 12 | 2.0 | 12 | 1.0 | 12 | 5 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1009.3 | 1010.6 | 1000.4 | 25 | 3.5 | 3.5 | 30 | 2.0 | 30 | 1.0 | 30 | 6 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 1017.1 | 1018.5 | 1009.5 | 01 | 6.0 | 3.5 | 10 | 1.0 | 10 | 0.5 | 10* | 7 | 4 | 3 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 1013.8 | 1015.2 | 997.7 | 13 | 9.5 | 8.5 | 13 | 3.5 | 13 | 1.0 | 13 | 9 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1012.7 | 1014.1 | 987.6 | 30 | 13.0 | 12.5 | 30 | 3.5 | 30 | 1.5 | 30 | 8 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | |