旬ごとの値
 |  |
 |  |
 |  |  |  |  |
 |  |  |  |  |  |
 |  |  |  |  |
倶知安（後志地方) 2017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 | 992.0 | 1015.8 | 1001.0 | 09 | 21.0 | 8.0 | 10 | 2.0 | 10* | 1.0 | 10* | 10 | 7 | 4 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 987.1 | 1011.2 | 998.1 | 12 | 53.5 | 20.0 | 11 | 4.5 | 15 | 1.0 | 15* | 10 | 9 | 8 | 1 | 0 | 0 | 0 | 0 | |
| 下旬 | 991.6 | 1015.7 | 996.9 | 27 | 46.0 | 24.5 | 27 | 7.5 | 27 | 2.0 | 27 | 11 | 9 | 7 | 1 | 0 | 0 | 0 | 0 | |
| 上旬 | 984.9 | 1008.7 | 997.8 | 10 | 22.5 | 9.5 | 02 | 2.5 | 02 | 1.5 | 02 | 9 | 6 | 5 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 989.0 | 1012.7 | 999.2 | 20 | 46.0 | 15.0 | 18 | 2.0 | 19* | 1.0 | 19* | 10 | 10 | 10 | 1 | 0 | 0 | 0 | 0 | |
| 下旬 | 992.2 | 1016.3 | 994.3 | 23 | 40.0 | 16.0 | 25 | 3.0 | 25 | 1.0 | 25* | 8 | 6 | 5 | 1 | 0 | 0 | 0 | 0 | |
| 上旬 | 984.2 | 1007.8 | 997.3 | 08 | 30.5 | 6.0 | 07 | 2.0 | 10* | 1.0 | 09 | 10 | 8 | 7 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 994.8 | 1018.5 | 1012.4 | 15 | 1.0 | 1.0 | 11 | 0.5 | 11 | 0.5 | 11 | 6 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 992.2 | 1015.6 | 1004.7 | 22 | 26.0 | 10.5 | 30 | 3.0 | 30* | 1.5 | 30 | 11 | 8 | 7 | 1 | 0 | 0 | 0 | 0 | |
| 上旬 | 992.4 | 1015.6 | 1003.8 | 07 | 8.5 | 7.0 | 07 | 3.0 | 07 | 0.5 | 08* | 3 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 981.5 | 1004.3 | 985.3 | 18 | 36.5 | 26.5 | 18 | 8.5 | 18 | 2.0 | 18 | 8 | 5 | 4 | 1 | 0 | 0 | 0 | 0 | |
| 下旬 | 987.3 | 1010.1 | 997.6 | 30 | 28.5 | 11.5 | 25 | 6.5 | 25 | 2.5 | 25 | 7 | 7 | 6 | 1 | 0 | 0 | 0 | 0 | |
| 上旬 | 990.4 | 1013.0 | 998.0 | 08 | 2.5 | 2.0 | 06 | 1.5 | 06 | 0.5 | 06* | 5 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 989.3 | 1011.7 | 1002.0 | 11 | 13.5 | 8.0 | 11 | 3.5 | 12* | 1.0 | 11 | 7 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 986.7 | 1008.9 | 1002.1 | 31 | 19.0 | 16.0 | 27 | 3.5 | 27 | 1.0 | 27 | 4 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | |
| 上旬 | 982.6 | 1004.8 | 993.5 | 02 | 94.0 | 43.5 | 10 | 16.0 | 10 | 5.0 | 10 | 8 | 8 | 8 | 2 | 1 | 0 | 0 | 0 | |
| 中旬 | 988.5 | 1010.7 | 1001.6 | 11 | 18.5 | 10.0 | 15 | 4.0 | 11 | 1.5 | 16 | 4 | 3 | 3 | 1 | 0 | 0 | 0 | 0 | |
| 下旬 | 986.0 | 1008.0 | 998.0 | 22 | 69.5 | 34.5 | 22 | 8.5 | 25 | 3.0 | 25 | 7 | 6 | 5 | 3 | 1 | 0 | 0 | 0 | |
| 上旬 | 985.8 | 1007.4 | 1002.1 | 03 | 6.0 | 3.5 | 10 | 2.0 | 10 | 1.5 | 10 | 4 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 986.3 | 1007.8 | 1003.8 | 16 | 69.5 | 62.0 | 16 | 44.5 | 16 | 14.0 | 16 | 6 | 4 | 2 | 1 | 1 | 1 | 0 | 0 | |
| 下旬 | 986.7 | 1008.3 | 1000.1 | 24 | 77.0 | 55.0 | 31 | 16.0 | 31 | 5.0 | 22 | 6 | 4 | 3 | 2 | 1 | 1 | 0 | 0 | |
| 上旬 | 986.1 | 1007.7 | 1000.7 | 08 | 3.5 | 3.5 | 09 | 2.0 | 09 | 0.5 | 09 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 990.0 | 1011.9 | 1005.4 | 11 | 27.5 | 25.0 | 12 | 7.0 | 12 | 2.0 | 12 | 6 | 4 | 3 | 1 | 0 | 0 | 0 | 0 | |
| 下旬 | 986.5 | 1008.3 | 993.5 | 25 | 59.0 | 29.5 | 22 | 9.0 | 22 | 3.5 | 25 | 9 | 6 | 6 | 2 | 0 | 0 | 0 | 0 | |
| 上旬 | 989.1 | 1011.2 | 1003.6 | 07 | 10.5 | 8.0 | 10 | 2.5 | 10 | 1.5 | 09 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 988.0 | 1010.0 | 978.2 | 18 | 101.5 | 61.0 | 18 | 13.0 | 18 | 4.0 | 18* | 9 | 6 | 6 | 2 | 1 | 1 | 0 | 0 | |
| 下旬 | 990.0 | 1012.4 | 1002.9 | 21 | 55.5 | 23.0 | 23 | 13.5 | 23 | 3.5 | 23 | 8 | 5 | 5 | 2 | 0 | 0 | 0 | 0 | |
| 上旬 | 997.0 | 1019.6 | 1009.3 | 03 | 15.5 | 11.5 | 04 | 2.0 | 04 | 1.0 | 04 | 8 | 3 | 3 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 999.2 | 1022.2 | 1006.9 | 12 | 35.0 | 14.5 | 17 | 6.0 | 17 | 2.0 | 17 | 8 | 7 | 5 | 1 | 0 | 0 | 0 | 0 | |
| 下旬 | 993.6 | 1016.5 | 992.3 | 30 | 44.0 | 25.0 | 23 | 6.0 | 23 | 1.5 | 23 | 6 | 3 | 3 | 1 | 0 | 0 | 0 | 0 | |
| 上旬 | 992.7 | 1015.7 | 998.5 | 10 | 42.5 | 11.5 | 08 | 5.0 | 08 | 2.5 | 01 | 8 | 7 | 6 | 2 | 0 | 0 | 0 | 0 | |
| 中旬 | 987.5 | 1010.8 | 983.4 | 11 | 117.5 | 27.5 | 11 | 5.0 | 13 | 2.5 | 11 | 10 | 9 | 9 | 6 | 0 | 0 | 0 | 0 | |
| 下旬 | 993.0 | 1016.7 | 1004.2 | 23 | 103.0 | 23.0 | 22 | 9.0 | 29 | 2.5 | 29 | 10 | 10 | 10 | 6 | 0 | 0 | 0 | 0 | |
| 上旬 | 991.7 | 1015.6 | 1004.0 | 10 | 61.0 | 11.5 | 02 | 4.0 | 03 | 1.5 | 03 | 10 | 10 | 9 | 2 | 0 | 0 | 0 | 0 | |
| 中旬 | 988.8 | 1012.6 | 997.0 | 11 | 105.5 | 18.5 | 17 | 4.5 | 17 | 1.5 | 17 | 10 | 10 | 10 | 5 | 0 | 0 | 0 | 0 | |
| 下旬 | 987.4 | 1011.2 | 979.8 | 25 | 97.5 | 24.0 | 27 | 3.0 | 27 | 1.0 | 29* | 11 | 10 | 8 | 5 | 0 | 0 | 0 | 0 | |