旬ごとの値
 |  |
 |  |
 |  |  |  |  |
 |  |  |  |  |  |
 |  |  |  |  |
銚子（千葉県) 2009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 | 1012.0 | 1015.5 | 997.3 | 10 | 47.5 | 47.5 | 09 | 35.5 | 09 | 15.5 | 09 | 3 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | |
| 中旬 | 1014.0 | 1017.5 | 1005.1 | 19 | 4.0 | 3.5 | 19 | 2.0 | 19 | 1.0 | 19 | 4 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1014.0 | 1017.4 | 994.2 | 31 | 141.5 | 75.0 | 31 | 20.0 | 31 | 5.5 | 31 | 9 | 8 | 7 | 4 | 1 | 1 | 1 | 0 | |
| 上旬 | 1013.0 | 1016.5 | 1005.8 | 01 | 4.5 | 3.5 | 09 | 2.5 | 09 | 1.0 | 09 | 4 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 1008.1 | 1011.5 | 991.7 | 20 | 18.0 | 17.5 | 20 | 3.0 | 20 | 1.5 | 20 | 7 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | |
| 下旬 | 1013.8 | 1017.3 | 1000.1 | 21 | 42.5 | 30.5 | 23 | 15.0 | 23 | 4.5 | 23 | 7 | 4 | 4 | 1 | 1 | 0 | 0 | 0 | |
| 上旬 | 1013.9 | 1017.4 | 994.4 | 06 | 94.5 | 50.0 | 06 | 18.0 | 06 | 4.0 | 06 | 9 | 7 | 7 | 2 | 1 | 1 | 0 | 0 | |
| 中旬 | 1011.7 | 1015.1 | 996.2 | 14 | 31.5 | 20.0 | 14 | 5.5 | 20* | 3.0 | 14 | 7 | 3 | 2 | 2 | 0 | 0 | 0 | 0 | |
| 下旬 | 1011.3 | 1014.7 | 991.7 | 23 | 17.0 | 7.0 | 22 | 4.5 | 22 | 1.5 | 22 | 9 | 7 | 6 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 1012.9 | 1016.3 | 1002.7 | 02 | 22.5 | 15.5 | 02 | 5.0 | 02 | 1.0 | 02* | 4 | 3 | 3 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 1009.2 | 1012.6 | 992.7 | 15 | 22.0 | 11.5 | 15 | 7.0 | 15 | 2.5 | 15 | 4 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | |
| 下旬 | 1007.3 | 1010.6 | 987.1 | 26 | 96.5 | 85.0 | 25 | 20.5 | 25 | 6.5 | 25 | 9 | 5 | 4 | 1 | 1 | 1 | 1 | 0 | |
| 上旬 | 1011.4 | 1014.8 | 1000.7 | 08 | 58.0 | 33.5 | 08 | 18.5 | 08 | 5.5 | 08 | 4 | 4 | 4 | 2 | 1 | 0 | 0 | 0 | |
| 中旬 | 1007.6 | 1010.9 | 997.4 | 18 | 11.0 | 8.0 | 17 | 1.5 | 18* | 1.0 | 18 | 7 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1006.9 | 1010.2 | 998.3 | 31 | 67.0 | 37.5 | 29 | 10.0 | 29 | 4.5 | 29 | 8 | 5 | 4 | 2 | 1 | 0 | 0 | 0 | |
| 上旬 | 1004.6 | 1007.9 | 998.5 | 06 | 43.0 | 25.0 | 04 | 21.5 | 04 | 7.0 | 04 | 6 | 4 | 3 | 2 | 0 | 0 | 0 | 0 | |
| 中旬 | 1006.2 | 1009.5 | 991.7 | 11 | 67.5 | 33.5 | 15 | 27.5 | 15 | 9.0 | 15 | 9 | 6 | 6 | 2 | 1 | 0 | 0 | 0 | |
| 下旬 | 1003.3 | 1006.6 | 995.3 | 23 | 138.5 | 55.0 | 28 | 22.0 | 28 | 5.0 | 28 | 8 | 6 | 4 | 4 | 2 | 1 | 0 | 0 | |
| 上旬 | 1005.2 | 1008.5 | 998.3 | 10 | 12.0 | 5.0 | 02* | 3.5 | 01 | 1.5 | 02* | 10 | 6 | 2 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 1005.7 | 1008.9 | 1000.4 | 19 | 0.0 | 0.0 | 19* | 0.0 | 19* | 0.0 | 19* | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1003.8 | 1007.0 | 997.6 | 22 | 37.0 | 20.5 | 23 | 13.5 | 23 | 6.5 | 23 | 11 | 5 | 4 | 1 | 0 | 0 | 0 | 0 | |
| 上旬 | 1006.5 | 1009.7 | 1005.1 | 04 | 100.5 | 94.0 | 10 | 52.0 | 10 | 17.0 | 10 | 8 | 4 | 3 | 1 | 1 | 1 | 1 | 0 | |
| 中旬 | 1007.9 | 1011.1 | 998.5 | 13 | 25.5 | 25.5 | 11 | 22.0 | 11 | 8.0 | 11 | 6 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | |
| 下旬 | 1005.9 | 1009.1 | 995.9 | 31 | 152.5 | 131.0 | 31 | 26.0 | 31 | 7.5 | 31 | 6 | 3 | 2 | 2 | 1 | 1 | 1 | 1 | |
| 上旬 | 1006.5 | 1009.8 | 997.9 | 08 | 0.0 | 0.0 | 10* | 0.5 | 01 | 0.0 | 10* | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 1007.4 | 1010.7 | 1002.3 | 13 | 31.5 | 12.0 | 12 | 8.5 | 12 | 5.5 | 12 | 6 | 4 | 4 | 2 | 0 | 0 | 0 | 0 | |
| 下旬 | 1015.7 | 1019.0 | 1013.7 | 26 | 6.5 | 3.5 | 30 | 1.5 | 25 | 1.0 | 25 | 5 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 1008.7 | 1012.0 | 988.3 | 08 | 97.0 | 38.0 | 06 | 11.0 | 08 | 5.0 | 08 | 8 | 7 | 7 | 3 | 1 | 0 | 0 | 0 | |
| 中旬 | 1009.1 | 1012.4 | 1001.4 | 18 | 12.5 | 9.5 | 14 | 6.5 | 14 | 1.5 | 14 | 4 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1015.2 | 1018.6 | 993.6 | 27 | 106.0 | 88.0 | 26 | 14.5 | 26 | 4.5 | 26 | 6 | 4 | 4 | 1 | 1 | 1 | 1 | 0 | |
| 上旬 | 1016.2 | 1019.5 | 1006.0 | 01 | 35.5 | 20.5 | 01 | 8.5 | 01 | 3.5 | 01 | 6 | 4 | 4 | 2 | 0 | 0 | 0 | 0 | |
| 中旬 | 1012.9 | 1016.3 | 998.9 | 14 | 147.5 | 67.0 | 11 | 18.5 | 11 | 7.5 | 11 | 8 | 6 | 6 | 3 | 2 | 1 | 0 | 0 | |
| 下旬 | 1017.5 | 1020.9 | 1012.7 | 25 | 69.0 | 41.5 | 25 | 15.0 | 25 | 4.0 | 25 | 7 | 6 | 6 | 2 | 1 | 0 | 0 | 0 | |
| 上旬 | 1014.6 | 1018.0 | 1003.1 | 03 | 64.0 | 41.5 | 05 | 33.5 | 05 | 11.5 | 05 | 6 | 3 | 2 | 2 | 1 | 0 | 0 | 0 | |
| 中旬 | 1008.7 | 1012.2 | 1004.4 | 18 | 67.5 | 46.5 | 11 | 9.5 | 11 | 3.5 | 11 | 6 | 4 | 4 | 2 | 1 | 0 | 0 | 0 | |
| 下旬 | 1009.2 | 1012.7 | 994.1 | 31 | 12.0 | 10.0 | 28 | 5.0 | 28 | 2.5 | 28 | 6 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | |