旬ごとの値
 |  |
 |  |
 |  |  |  |  |
 |  |  |  |  |  |
 |  |  |  |  |
銚子（千葉県) 1991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 | 1003.9 | 1007.3 | -- | 16.5 | 13.5 | 01 | 3.5 | 01 | 1.0 | 01 | 4 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1013.8 | 1017.2 | -- | 11.0 | 7.0 | 12 | 3.5 | 17 | 2.5 | 17 | 5 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1014.6 | 1018.0 | -- | 37.0 | 28.5 | 21 | 5.5 | 21 | 1.5 | 21 | 6 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1010.3 | 1013.7 | -- | 10.0 | 9.5 | 10 | 3.5 | 10 | 1.0 | 10 | 4 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1005.7 | 1009.1 | 976.3 | 16 | 68.5 | 49.5 | 15 | 7.5 | 15 | 2.0 | 15 | 7 | 4 | 4 | 2 | 1 | 0 | 0 | 0 | |
| 下旬 | 1013.7 | 1017.1 | -- | 0.0 | 0.0 | 28* | 0.0 | 28* | 0.0 | 28* | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1013.2 | 1016.6 | -- | 36.5 | 17.0 | 08 | 5.0 | 08 | 1.5 | 08 | 6 | 4 | 3 | 2 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1013.7 | 1017.1 | -- | 58.0 | 33.0 | 11 | 6.5 | 11 | 1.5 | 11 | 9 | 5 | 5 | 2 | 1 | 0 | 0 | 0 | ||
| 下旬 | 1015.4 | 1018.8 | -- | 146.0 | 52.0 | 23 | 10.0 | 23 | 3.5 | 23 | 10 | 8 | 8 | 6 | 1 | 1 | 0 | 0 | ||
| 上旬 | 1016.7 | 1020.1 | -- | 90.5 | 44.0 | 07 | 8.5 | 08 | 2.0 | 08 | 4 | 4 | 4 | 3 | 1 | 0 | 0 | 0 | ||
| 中旬 | 1008.2 | 1011.5 | -- | 2.0 | 1.0 | 14* | 0.5 | 14* | 0.5 | 14* | 6 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1013.5 | 1016.8 | -- | 78.0 | 42.5 | 29 | 19.5 | 29 | 6.5 | 29 | 6 | 5 | 4 | 2 | 1 | 0 | 0 | 0 | ||
| 上旬 | 1011.1 | 1014.4 | -- | 12.0 | 8.0 | 09 | 2.5 | 02 | 1.0 | 09* | 6 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1007.8 | 1011.0 | -- | 35.5 | 14.0 | 16 | 8.0 | 16 | 4.0 | 16 | 5 | 4 | 3 | 2 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1010.1 | 1013.4 | -- | 28.0 | 14.5 | 24 | 7.0 | 24 | 2.0 | 24 | 9 | 6 | 5 | 1 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1009.0 | 1012.3 | -- | 22.0 | 7.5 | 01 | 4.0 | 01 | 1.0 | 01 | 5 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1002.1 | 1005.3 | -- | 45.0 | 25.5 | 20 | 7.0 | 20 | 2.0 | 20 | 8 | 3 | 3 | 2 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1004.0 | 1007.1 | -- | 113.0 | 60.0 | 23 | 17.5 | 27 | 6.0 | 27 | 10 | 6 | 5 | 4 | 1 | 1 | 0 | 0 | ||
| 上旬 | 1002.5 | 1005.7 | -- | 54.0 | 19.5 | 06 | 10.5 | 02 | 4.0 | 01 | 7 | 4 | 4 | 3 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1006.5 | 1009.7 | -- | 62.5 | 51.0 | 16 | 29.5 | 16 | 13.5 | 16 | 7 | 5 | 5 | 1 | 1 | 1 | 0 | 0 | ||
| 下旬 | 1003.4 | 1006.6 | -- | 0.0 | 0.0 | 30* | 0.0 | 30* | 0.0 | 30* | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1003.1 | 1006.2 | -- | 25.0 | 15.0 | 07 | 7.0 | 06 | 2.0 | 07* | 7 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1007.3 | 1010.5 | -- | 69.5 | 53.5 | 20 | 11.0 | 20 | 3.5 | 20 | 7 | 4 | 4 | 2 | 1 | 1 | 0 | 0 | ||
| 下旬 | 1004.5 | 1007.6 | -- | 13.5 | 8.5 | 31 | 5.5 | 31 | 1.5 | 31* | 7 | 4 | 3 | 0 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1007.9 | 1011.1 | -- | 122.0 | 96.0 | 08 | 45.5 | 08 | 12.5 | 08 | 4 | 3 | 3 | 2 | 1 | 1 | 1 | 0 | ||
| 中旬 | 1008.2 | 1011.4 | -- | 198.5 | 118.0 | 19 | 30.0 | 14 | 9.0 | 14 | 9 | 6 | 6 | 4 | 3 | 1 | 1 | 1 | ||
| 下旬 | 1012.8 | 1016.0 | -- | 68.0 | 18.5 | 25 | 8.5 | 27 | 8.0 | 27 | 8 | 6 | 6 | 4 | 0 | 0 | 0 | 0 | ||
| 上旬 | 1009.0 | 1012.2 | -- | 283.0 | 84.0 | 01 | 26.5 | 07 | 13.5 | 07 | 8 | 6 | 6 | 6 | 4 | 3 | 2 | 0 | ||
| 中旬 | 1004.4 | 1007.7 | -- | 326.5 | 128.5 | 11 | 23.0 | 12 | 6.0 | 12 | 8 | 8 | 8 | 5 | 3 | 3 | 2 | 1 | ||
| 下旬 | 1013.9 | 1017.2 | -- | 98.0 | 49.5 | 25 | 16.0 | 27 | 5.5 | 27 | 6 | 3 | 2 | 2 | 2 | 0 | 0 | 0 | ||
| 上旬 | 1015.8 | 1019.1 | -- | 64.0 | 59.0 | 08 | 50.0 | 08 | 15.5 | 08 | 3 | 3 | 3 | 1 | 1 | 1 | 0 | 0 | ||
| 中旬 | 1014.4 | 1017.7 | -- | 3.5 | 3.5 | 17 | 2.0 | 17 | 1.0 | 17 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1018.9 | 1022.2 | -- | 49.5 | 41.5 | 28 | 14.5 | 28 | 7.0 | 28 | 6 | 3 | 3 | 1 | 1 | 0 | 0 | 0 | ||
| 上旬 | 1017.2 | 1020.6 | -- | 4.0 | 3.5 | 05 | 2.5 | 05 | 1.0 | 05 | 4 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | ||
| 中旬 | 1017.9 | 1021.3 | -- | 2.5 | 2.0 | 18 | 1.0 | 18 | 0.5 | 18* | 7 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | ||
| 下旬 | 1012.7 | 1016.0 | -- | 40.0 | 13.5 | 26 | 4.0 | 27 | 1.0 | 27 | 6 | 5 | 5 | 3 | 0 | 0 | 0 | 0 | ||