旬ごとの値
 |  |
 |  |
 |  |  |  |  |
 |  |  |  |  |  |
 |  |  |  |  |
札幌（石狩地方) 1999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 | 1003.0 | 1006.3 | -- | 22.5 | 13.0 | 04 | 4.5 | 04 | 1.5 | 04 | 10 | 6 | 4 | 1 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1009.5 | 1012.7 | -- | 59.0 | 15.0 | 12 | 4.5 | 11 | 2.0 | 11 | 9 | 7 | 7 | 3 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1008.1 | 1011.4 | -- | 53.5 | 14.5 | 28 | 5.0 | 27 | 1.5 | 27* | 11 | 11 | 10 | 1 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1005.6 | 1008.9 | -- | 44.0 | 11.0 | 08 | 4.0 | 08 | 1.5 | 06 | 10 | 9 | 8 | 1 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1009.5 | 1012.8 | -- | 24.0 | 19.0 | 18 | 4.0 | 18 | 1.5 | 18 | 10 | 4 | 2 | 1 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1008.3 | 1011.6 | -- | 16.0 | 5.5 | 27 | 3.0 | 28 | 1.5 | 28 | 7 | 7 | 3 | 0 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1007.2 | 1010.5 | 978.6 | 06 | 47.5 | 17.0 | 03 | 4.0 | 06 | 1.5 | 03 | 10 | 7 | 7 | 2 | 0 | 0 | 0 | 0 | |
| 中旬 | 1014.7 | 1018.0 | -- | 9.0 | 7.0 | 19 | 2.5 | 19 | 1.0 | 19 | 9 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1013.1 | 1016.3 | -- | 29.5 | 12.0 | 22 | 2.5 | 29 | 1.0 | 29* | 9 | 7 | 4 | 2 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1011.9 | 1015.1 | -- | 25.5 | 8.0 | 07 | 2.0 | 07 | 1.0 | 07* | 9 | 7 | 6 | 0 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1008.4 | 1011.5 | -- | 4.5 | 2.0 | 14 | 1.0 | 14 | 0.5 | 17* | 8 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1012.1 | 1015.2 | -- | 2.5 | 2.5 | 28 | 1.0 | 28 | 0.5 | 28 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1007.1 | 1010.2 | -- | 58.5 | 40.5 | 05 | 10.0 | 05 | 2.0 | 05 | 9 | 7 | 5 | 1 | 1 | 0 | 0 | 0 | ||
| 中旬 | 1007.9 | 1011.0 | -- | 2.0 | 1.5 | 20 | 1.0 | 20 | 0.5 | 20* | 5 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1003.7 | 1006.8 | -- | 33.0 | 14.0 | 27 | 4.0 | 27 | 1.5 | 27 | 6 | 4 | 4 | 2 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1007.4 | 1010.5 | -- | 21.0 | 16.5 | 07 | 3.5 | 07 | 2.0 | 07 | 5 | 3 | 3 | 1 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1003.1 | 1006.1 | -- | 1.0 | 1.0 | 16 | 1.0 | 16 | 1.0 | 16 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1007.0 | 1010.0 | -- | 10.5 | 10.0 | 24 | 3.5 | 24 | 1.0 | 24 | 4 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1008.7 | 1011.8 | -- | 19.5 | 11.0 | 01 | 4.5 | 01 | 2.0 | 01 | 5 | 4 | 4 | 1 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1005.3 | 1008.3 | -- | 117.0 | 80.5 | 14 | 15.0 | 14 | 4.0 | 14 | 7 | 6 | 5 | 2 | 1 | 1 | 1 | 0 | ||
| 下旬 | 1004.5 | 1007.5 | -- | 18.0 | 9.0 | 30 | 3.5 | 30 | 1.5 | 30 | 8 | 5 | 3 | 0 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1008.3 | 1011.2 | -- | 68.0 | 44.0 | 02 | 11.5 | 02 | 5.5 | 06 | 4 | 3 | 3 | 2 | 1 | 0 | 0 | 0 | ||
| 中旬 | 1007.5 | 1010.5 | -- | 0.5 | 0.5 | 20 | 0.5 | 20 | 0.5 | 20 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1008.2 | 1011.1 | -- | 34.5 | 19.0 | 26 | 19.0 | 26 | 8.0 | 26 | 8 | 4 | 4 | 1 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1008.5 | 1011.5 | -- | 26.0 | 17.5 | 07 | 6.0 | 10 | 4.0 | 10 | 5 | 4 | 3 | 1 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1009.4 | 1012.4 | -- | 34.5 | 22.5 | 20 | 4.5 | 20 | 1.5 | 20 | 8 | 4 | 2 | 2 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1012.4 | 1015.5 | -- | 47.0 | 28.0 | 25 | 13.0 | 25 | 4.0 | 25 | 7 | 4 | 3 | 2 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1012.9 | 1016.0 | -- | 40.0 | 27.0 | 02 | 6.5 | 02 | 3.5 | 08 | 6 | 4 | 3 | 2 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1013.7 | 1016.9 | -- | 25.5 | 7.5 | 11 | 5.0 | 15 | 1.5 | 15 | 8 | 6 | 5 | 0 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1013.2 | 1016.4 | -- | 15.0 | 6.5 | 29 | 2.0 | 29 | 1.0 | 29 | 11 | 8 | 6 | 0 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1013.9 | 1017.1 | -- | 17.0 | 9.0 | 01 | 3.0 | 08 | 2.0 | 08 | 7 | 6 | 4 | 0 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1012.8 | 1016.0 | -- | 44.5 | 12.5 | 17 | 3.5 | 16 | 1.0 | 19* | 8 | 7 | 7 | 2 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1010.7 | 1013.9 | -- | 14.0 | 8.0 | 25 | 3.5 | 25 | 1.0 | 25 | 8 | 7 | 4 | 0 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1013.3 | 1016.6 | -- | 80.5 | 28.0 | 03 | 6.5 | 03 | 2.0 | 09* | 10 | 9 | 7 | 4 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1007.9 | 1011.2 | -- | 10.0 | 5.5 | 11 | 2.0 | 11 | 0.5 | 16* | 10 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1012.0 | 1015.3 | -- | 19.5 | 10.5 | 25 | 5.5 | 25 | 1.5 | 25 | 11 | 7 | 7 | 1 | 0 | 0 | 0 | 0 | ||