旬ごとの値
 |  |
 |  |
 |  |  |  |  |
 |  |  |  |  |  |
 |  |  |  |  |
前橋（群馬県) 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 | 1002.6 | 1016.6 | 999.7 | 09 | 15.5 | 13.0 | 08 | 3.0 | 08 | 1.0 | 08 | 4 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 998.2 | 1012.3 | 999.5 | 13 | 0.0 | 0.0 | 20* | 0.0 | 20* | 0.0 | 20* | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1004.6 | 1018.7 | 998.6 | 30 | 0.0 | 0.0 | 30* | 0.0 | 30* | 0.0 | 30* | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 996.8 | 1010.9 | 995.4 | 10 | 1.5 | 1.0 | 09 | 0.5 | 10* | 0.5 | 10* | 5 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 1002.5 | 1016.6 | 995.0 | 20 | 0.5 | 0.5 | 20 | 0.5 | 20 | 0.5 | 20 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1004.0 | 1018.0 | 994.3 | 23 | 0.0 | 0.0 | 28* | 0.0 | 28* | 0.0 | 28* | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 996.6 | 1010.4 | 999.4 | 07 | 0.0 | 0.0 | 10* | 0.0 | 10* | 0.0 | 10* | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 1003.6 | 1017.6 | 1005.3 | 15 | 2.0 | 1.5 | 14 | 1.0 | 14 | 1.0 | 14 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1002.7 | 1016.6 | 1003.6 | 21 | 38.0 | 12.5 | 27 | 4.0 | 27 | 1.0 | 27 | 7 | 4 | 4 | 3 | 0 | 0 | 0 | 0 | |
| 上旬 | 1003.5 | 1017.1 | 1004.7 | 09 | 5.5 | 3.0 | 09 | 2.5 | 09 | 1.5 | 09 | 7 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 995.0 | 1008.5 | 987.3 | 18 | 37.0 | 29.5 | 11 | 4.5 | 11 | 1.0 | 18* | 4 | 3 | 3 | 1 | 0 | 0 | 0 | 0 | |
| 下旬 | 999.2 | 1012.7 | 1001.1 | 29 | 3.5 | 2.0 | 28 | 2.0 | 28 | 1.5 | 29 | 6 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 1002.3 | 1015.7 | 1003.0 | 07 | 1.5 | 1.5 | 10 | 1.0 | 10 | 0.5 | 10 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 998.4 | 1011.7 | 1005.7 | 11 | 51.0 | 39.5 | 13 | 8.0 | 13 | 2.0 | 18* | 8 | 3 | 3 | 1 | 1 | 0 | 0 | 0 | |
| 下旬 | 996.5 | 1009.6 | 1003.2 | 31 | 20.0 | 11.0 | 25 | 4.0 | 25 | 1.0 | 27* | 5 | 5 | 3 | 1 | 0 | 0 | 0 | 0 | |
| 上旬 | 993.7 | 1006.8 | 991.3 | 02 | 13.0 | 11.0 | 02 | 11.0 | 02 | 9.5 | 02 | 9 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 996.8 | 1009.9 | 1002.6 | 11 | 8.5 | 7.5 | 11 | 7.0 | 11 | 4.0 | 11 | 6 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 995.3 | 1008.2 | 998.6 | 25 | 36.0 | 26.5 | 21 | 6.0 | 21 | 2.5 | 21 | 7 | 4 | 4 | 1 | 0 | 0 | 0 | 0 | |
| 上旬 | 995.9 | 1008.7 | 1003.2 | 05 | 74.5 | 47.0 | 01 | 9.0 | 01 | 4.0 | 01 | 6 | 4 | 3 | 2 | 1 | 0 | 0 | 0 | |
| 中旬 | 997.0 | 1009.7 | 1004.0 | 18 | 67.5 | 43.5 | 12 | 38.5 | 12 | 17.5 | 12 | 6 | 3 | 3 | 2 | 1 | 0 | 0 | 0 | |
| 下旬 | 995.1 | 1008.0 | 999.8 | 24 | 135.0 | 89.0 | 26 | 25.5 | 26 | 9.5 | 26 | 10 | 8 | 8 | 2 | 1 | 1 | 1 | 0 | |
| 上旬 | 991.3 | 1004.1 | 988.3 | 08 | 40.5 | 26.0 | 08 | 14.0 | 08 | 6.0 | 08 | 8 | 8 | 6 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 995.6 | 1008.6 | 1003.5 | 11 | 118.0 | 35.0 | 19 | 13.5 | 20 | 7.0 | 20 | 10 | 9 | 7 | 6 | 1 | 0 | 0 | 0 | |
| 下旬 | 997.3 | 1010.2 | 1002.2 | 25 | 52.5 | 43.0 | 21 | 28.0 | 21 | 10.5 | 21 | 10 | 4 | 4 | 1 | 1 | 0 | 0 | 0 | |
| 上旬 | 997.2 | 1010.3 | 1001.7 | 08* | 13.0 | 5.0 | 02 | 3.5 | 02 | 1.5 | 01 | 6 | 6 | 4 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 998.2 | 1011.3 | 986.3 | 18 | 35.0 | 31.0 | 17 | 4.0 | 17 | 1.0 | 17 | 6 | 5 | 3 | 1 | 1 | 0 | 0 | 0 | |
| 下旬 | 1000.4 | 1013.6 | 997.0 | 28 | 36.0 | 15.5 | 23 | 7.5 | 28 | 2.5 | 28 | 6 | 4 | 4 | 2 | 0 | 0 | 0 | 0 | |
| 上旬 | 1007.4 | 1020.8 | 1005.4 | 03 | 35.5 | 20.5 | 06 | 5.0 | 07 | 1.0 | 07* | 5 | 3 | 3 | 2 | 0 | 0 | 0 | 0 | |
| 中旬 | 1007.5 | 1021.1 | 1011.2 | 12 | 105.5 | 36.0 | 16 | 6.5 | 13 | 1.5 | 13 | 9 | 8 | 8 | 3 | 1 | 0 | 0 | 0 | |
| 下旬 | 1002.0 | 1015.5 | 972.4 | 23 | 240.0 | 91.0 | 22 | 22.0 | 23 | 6.0 | 23 | 7 | 6 | 5 | 5 | 3 | 2 | 2 | 0 | |
| 上旬 | 1006.0 | 1019.6 | 1010.1 | 09* | 0.0 | 0.0 | 09* | 0.0 | 09* | 0.0 | 09* | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 1001.0 | 1014.8 | 1002.3 | 18 | 0.0 | 0.0 | 20* | 0.0 | 20* | 0.0 | 20* | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1005.9 | 1019.8 | 1001.4 | 23 | 6.0 | 4.0 | 23 | 2.5 | 23 | 0.5 | 30* | 5 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 1002.1 | 1016.1 | 1003.0 | 05 | 0.0 | 0.0 | 08* | 0.0 | 08* | 0.0 | 08* | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 1003.3 | 1017.4 | 1000.6 | 11 | 0.0 | 0.0 | 17 | 0.0 | 17 | 0.0 | 17 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1002.8 | 1016.8 | 997.2 | 25 | 0.0 | 0.0 | 25 | 0.0 | 25 | 0.0 | 25 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |