半旬ごとの値
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前橋（群馬県) 1991年（半旬ごとの値） 詳細（気温・蒸気圧・湿度）
| 月 | 半旬 | 日～日 | 気温(℃) | 蒸気圧 (hPa) | 湿度(％) | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 日平均 | 最高気温 | 最低気温 | 各階級の日数（平均） | 各階級の日数（最低） | 各階級の日数（最高） | ||||||||||||||||||||
| 平均 | 平均 | 最高 | 最低 | 平均 | 最低 | 最高 | ＜0℃ | ≧25℃ | ＜0℃ | ≧25℃ | ＜0℃ | ≧25℃ | ≧30℃ | ≧35℃ | 平均 | 平均 | 最小 | ||||||||
| 値 | 日 | 値 | 日 | 値 | 日 | 値 | 日 | 値 | 日 | ||||||||||||||||
| 第1半旬 | 1～ 5 | 6.1 | 11.5 | 14.0 | 02 | 9.8 | 05 | 1.8 | -0.8 | 05 | 4.4 | 02 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 5.0 | 53 | 29 | 05 | |
| 第2半旬 | 6～10 | 3.0 | 9.4 | 12.6 | 10 | 8.2 | 07* | -1.4 | -2.0 | 07 | -0.9 | 08* | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 3.9 | 53 | 23 | 06 | |
| 第3半旬 | 11～15 | 3.7 | 8.5 | 10.9 | 13 | 5.3 | 12 | 0.6 | -1.7 | 15 | 1.8 | 11 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 4.5 | 58 | 30 | 13 | |
| 第4半旬 | 16～20 | 3.8 | 9.4 | 11.8 | 20 | 7.0 | 18 | -0.8 | -2.5 | 16 | 0.5 | 17 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 4.4 | 55 | 29 | 18 | |
| 第5半旬 | 21～25 | 3.5 | 8.8 | 13.4 | 25 | 5.1 | 23 | -0.7 | -4.6 | 24 | 1.9 | 22 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 4.6 | 59 | 32 | 24 | |
| 第6半旬 | 26～31 | 2.8 | 8.2 | 9.9 | 31 | 5.3 | 28 | -1.4 | -3.4 | 29 | 1.1 | 26 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 3.8 | 53 | 27 | 29 | |
| 第1半旬 | 1～ 5 | 2.7 | 9.1 | 10.7 | 04 | 7.7 | 05 | -1.7 | -3.1 | 03 | -0.9 | 05 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 3.7 | 51 | 22 | 02 | |
| 第2半旬 | 6～10 | 3.0 | 8.7 | 11.2 | 06 | 6.1 | 10 | -1.3 | -2.8 | 06 | 0.4 | 07 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 3.9 | 53 | 22 | 09 | |
| 第3半旬 | 11～15 | 5.6 | 10.6 | 13.4 | 11 | 7.9 | 15 | 1.6 | -1.4 | 14 | 4.4 | 11 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 4.9 | 54 | 22 | 14 | |
| 第4半旬 | 16～20 | 2.9 | 7.9 | 13.3 | 16 | 4.6 | 17 | -0.8 | -3.1 | 20 | 3.2 | 16 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 4.6 | 62 | 23 | 19 | |
| 第5半旬 | 21～25 | 1.6 | 7.6 | 8.9 | 22* | 5.5 | 24 | -3.7 | -6.1 | 24 | -0.6 | 22 | 1 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 2.7 | 41 | 16 | 22 | |
| 第6半旬 | 26～28 | 6.1 | 13.5 | 16.4 | 28 | 10.8 | 26 | -0.3 | -3.5 | 26 | 2.8 | 28 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 4.4 | 46 | 25 | 27* | |
| 第1半旬 | 1～ 5 | 6.1 | 12.0 | 18.6 | 05 | 7.7 | 01 | 0.9 | -1.3 | 04 | 3.7 | 05 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 3.7 | 41 | 16 | 05 | |
| 第2半旬 | 6～10 | 7.8 | 13.0 | 18.0 | 06 | 6.2 | 08 | 3.2 | 1.0 | 08 | 4.5 | 07 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.2 | 51 | 19 | 07 | |
| 第3半旬 | 11～15 | 5.3 | 10.4 | 14.1 | 13 | 7.6 | 15 | 1.1 | -0.8 | 15 | 3.6 | 12 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 5.4 | 61 | 29 | 14 | |
| 第4半旬 | 16～20 | 8.6 | 14.5 | 20.5 | 20 | 7.6 | 16 | 3.0 | 1.1 | 17 | 6.2 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.6 | 50 | 24 | 18 | |
| 第5半旬 | 21～25 | 10.4 | 14.9 | 21.4 | 24 | 8.2 | 22 | 6.6 | 3.3 | 22 | 10.0 | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.2 | 66 | 21 | 21 | |
| 第6半旬 | 26～31 | 10.5 | 15.0 | 20.4 | 26 | 11.3 | 28 | 6.9 | 5.5 | 31 | 8.1 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.9 | 72 | 37 | 31 | |
| 第1半旬 | 1～ 5 | 9.0 | 13.7 | 19.0 | 05 | 6.2 | 01 | 4.3 | 3.2 | 04 | 6.4 | 05 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.8 | 61 | 27 | 03 | |
| 第2半旬 | 6～10 | 14.0 | 17.4 | 23.0 | 09 | 14.3 | 08 | 10.7 | 7.5 | 06 | 12.0 | 08 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12.1 | 77 | 31 | 09 | |
| 第3半旬 | 11～15 | 15.0 | 18.6 | 21.7 | 14 | 15.5 | 13 | 11.8 | 9.5 | 15 | 13.0 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12.5 | 74 | 38 | 14 | |
| 第4半旬 | 16～20 | 15.7 | 22.1 | 25.0 | 16 | 17.9 | 20 | 9.8 | 8.2 | 19 | 11.9 | 17 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 8.5 | 48 | 19 | 20 | |
| 第5半旬 | 21～25 | 14.5 | 20.0 | 23.3 | 22 | 14.6 | 25 | 9.6 | 7.4 | 22 | 12.5 | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.9 | 56 | 14 | 22 | |
| 第6半旬 | 26～30 | 16.8 | 21.9 | 23.7 | 26 | 19.3 | 30 | 12.6 | 10.9 | 30 | 13.8 | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11.0 | 58 | 16 | 27 | |
| 第1半旬 | 1～ 5 | 12.4 | 18.3 | 21.1 | 05 | 14.9 | 03 | 6.6 | 3.3 | 04 | 8.5 | 01 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.5 | 47 | 18 | 05 | |
| 第2半旬 | 6～10 | 17.5 | 22.8 | 25.0 | 10 | 19.9 | 09 | 11.8 | 7.4 | 06 | 16.0 | 09 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 11.1 | 56 | 18 | 06 | |
| 第3半旬 | 11～15 | 18.9 | 24.9 | 29.2 | 11 | 21.0 | 12 | 13.0 | 12.0 | 14 | 13.8 | 15 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 11.6 | 55 | 20 | 11 | |
| 第4半旬 | 16～20 | 20.3 | 26.9 | 32.1 | 19 | 21.2 | 16 | 14.7 | 13.0 | 18 | 15.9 | 16 | 0 | 0 | 0 | 0 | 0 | 3 | 1 | 0 | 12.4 | 54 | 21 | 19 | |
| 第5半旬 | 21～25 | 22.8 | 28.9 | 31.2 | 23 | 26.8 | 24 | 18.2 | 16.7 | 21 | 19.9 | 23 | 0 | 0 | 0 | 0 | 0 | 5 | 2 | 0 | 17.3 | 63 | 35 | 24* | |
| 第6半旬 | 26～31 | 18.1 | 22.5 | 30.9 | 26 | 17.3 | 31 | 14.6 | 12.8 | 27 | 18.0 | 26 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 14.7 | 71 | 41 | 28 | |
| 第1半旬 | 1～ 5 | 19.6 | 24.0 | 27.5 | 05 | 20.9 | 03 | 15.9 | 14.5 | 01 | 17.0 | 02 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 16.9 | 75 | 40 | 04 | |
| 第2半旬 | 6～10 | 22.4 | 27.8 | 29.6 | 08 | 24.1 | 10 | 17.3 | 16.1 | 07 | 18.8 | 10 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 16.8 | 64 | 31 | 08 | |
| 第3半旬 | 11～15 | 25.6 | 31.6 | 35.1 | 12 | 26.7 | 15 | 19.5 | 18.2 | 11 | 22.2 | 12 | 0 | 3 | 0 | 0 | 0 | 5 | 4 | 1 | 20.5 | 64 | 33 | 14 | |
| 第4半旬 | 16～20 | 22.6 | 26.4 | 29.0 | 16 | 22.5 | 20 | 20.0 | 18.8 | 17 | 21.1 | 19 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 21.2 | 79 | 52 | 18* | |
| 第5半旬 | 21～25 | 21.1 | 23.2 | 26.3 | 25 | 19.8 | 22 | 19.1 | 17.8 | 22 | 20.4 | 25 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 22.4 | 89 | 71 | 21 | |
| 第6半旬 | 26～30 | 27.1 | 32.8 | 34.5 | 27 | 29.5 | 29 | 22.5 | 21.2 | 30 | 23.8 | 27 | 0 | 5 | 0 | 0 | 0 | 5 | 4 | 0 | 24.0 | 68 | 39 | 30 | |
| 第1半旬 | 1～ 5 | 23.7 | 28.4 | 30.7 | 05 | 27.0 | 01 | 20.3 | 19.0 | 03 | 21.3 | 04 | 0 | 0 | 0 | 0 | 0 | 5 | 2 | 0 | 21.8 | 75 | 44 | 02 | |
| 第2半旬 | 6～10 | 24.5 | 29.1 | 35.9 | 08 | 25.1 | 10 | 20.8 | 19.3 | 10 | 22.0 | 08 | 0 | 2 | 0 | 0 | 0 | 5 | 1 | 1 | 22.0 | 73 | 33 | 08 | |
| 第3半旬 | 11～15 | 23.1 | 27.2 | 35.7 | 11 | 21.4 | 14 | 20.0 | 19.2 | 15 | 20.7 | 11 | 0 | 1 | 0 | 0 | 0 | 3 | 1 | 1 | 22.1 | 80 | 38 | 11 | |
| 第4半旬 | 16～20 | 24.1 | 28.1 | 30.8 | 18 | 23.9 | 16 | 20.7 | 19.4 | 19 | 21.4 | 18 | 0 | 2 | 0 | 0 | 0 | 4 | 2 | 0 | 23.3 | 78 | 41 | 18 | |
| 第5半旬 | 21～25 | 28.2 | 34.1 | 37.6 | 24 | 27.4 | 22 | 23.4 | 21.6 | 21 | 25.1 | 24 | 0 | 4 | 0 | 2 | 0 | 5 | 4 | 3 | 25.1 | 67 | 34 | 21 | |
| 第6半旬 | 26～31 | 28.0 | 32.7 | 36.5 | 31 | 27.2 | 30 | 23.9 | 23.3 | 28 | 24.4 | 31 | 0 | 6 | 0 | 0 | 0 | 6 | 5 | 1 | 25.6 | 69 | 44 | 31* | |
| 第1半旬 | 1～ 5 | 26.3 | 31.3 | 35.2 | 02 | 23.0 | 05 | 22.5 | 18.6 | 05 | 25.4 | 03 | 0 | 4 | 0 | 2 | 0 | 4 | 4 | 1 | 25.6 | 75 | 41 | 04 | |
| 第2半旬 | 6～10 | 23.2 | 27.6 | 32.0 | 08 | 22.7 | 06 | 19.7 | 18.4 | 06 | 20.9 | 10* | 0 | 2 | 0 | 0 | 0 | 4 | 2 | 0 | 21.5 | 77 | 39 | 08 | |
| 第3半旬 | 11～15 | 24.6 | 28.5 | 29.7 | 12 | 26.8 | 11 | 21.8 | 20.6 | 15 | 22.8 | 13 | 0 | 1 | 0 | 0 | 0 | 5 | 0 | 0 | 24.3 | 79 | 54 | 15 | |
| 第4半旬 | 16～20 | 24.9 | 29.9 | 32.2 | 19 | 28.5 | 20 | 21.4 | 19.2 | 17 | 23.8 | 19 | 0 | 2 | 0 | 0 | 0 | 5 | 2 | 0 | 24.0 | 77 | 50 | 18 | |
| 第5半旬 | 21～25 | 25.5 | 29.2 | 32.3 | 23 | 24.5 | 24 | 22.6 | 19.3 | 25 | 25.2 | 22 | 0 | 3 | 0 | 1 | 0 | 4 | 3 | 0 | 26.8 | 81 | 58 | 25 | |
| 第6半旬 | 26～31 | 24.4 | 29.5 | 33.5 | 31 | 25.5 | 29 | 20.5 | 18.8 | 26 | 23.6 | 31 | 0 | 3 | 0 | 0 | 0 | 6 | 3 | 0 | 21.7 | 71 | 37 | 26 | |
| 第1半旬 | 1～ 5 | 27.2 | 32.0 | 34.5 | 04 | 30.6 | 03 | 23.1 | 22.1 | 01 | 23.8 | 03 | 0 | 5 | 0 | 0 | 0 | 5 | 5 | 0 | 25.5 | 72 | 42 | 04 | |
| 第2半旬 | 6～10 | 25.9 | 29.8 | 32.5 | 06 | 24.7 | 08 | 22.9 | 20.2 | 10 | 24.6 | 07* | 0 | 3 | 0 | 0 | 0 | 4 | 3 | 0 | 24.8 | 75 | 32 | 10 | |
| 第3半旬 | 11～15 | 21.9 | 25.3 | 29.7 | 12 | 22.1 | 13 | 19.1 | 18.0 | 15 | 19.9 | 13 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 21.5 | 83 | 45 | 12 | |
| 第4半旬 | 16～20 | 19.8 | 22.6 | 25.0 | 17 | 20.3 | 18 | 17.9 | 15.9 | 20 | 19.1 | 19* | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 21.1 | 92 | 65 | 17 | |
| 第5半旬 | 21～25 | 20.9 | 24.7 | 27.7 | 23 | 18.6 | 21 | 17.9 | 15.8 | 21 | 19.5 | 24 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 19.1 | 79 | 48 | 25 | |
| 第6半旬 | 26～30 | 20.4 | 24.4 | 31.5 | 28 | 21.0 | 26 | 17.2 | 15.5 | 29 | 19.4 | 28 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 17.9 | 76 | 42 | 28 | |
| 第1半旬 | 1～ 5 | 19.9 | 23.7 | 26.7 | 03 | 17.3 | 01 | 16.0 | 14.4 | 03 | 18.0 | 04 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 18.2 | 79 | 46 | 03 | |
| 第2半旬 | 6～10 | 17.0 | 18.5 | 19.9 | 08 | 16.9 | 09 | 15.6 | 14.9 | 10 | 16.7 | 08 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18.2 | 94 | 79 | 06 | |
| 第3半旬 | 11～15 | 17.7 | 21.2 | 23.6 | 14 | 17.4 | 11 | 14.9 | 9.7 | 15 | 18.2 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16.1 | 79 | 35 | 15 | |
| 第4半旬 | 16～20 | 15.9 | 20.3 | 23.6 | 18 | 16.8 | 17 | 12.3 | 7.7 | 16 | 14.3 | 19* | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12.6 | 70 | 39 | 19* | |
| 第5半旬 | 21～25 | 15.4 | 19.5 | 21.2 | 21 | 18.2 | 25 | 12.1 | 9.6 | 23 | 13.1 | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12.3 | 71 | 40 | 21 | |
| 第6半旬 | 26～31 | 15.4 | 19.0 | 21.7 | 29 | 17.1 | 31 | 12.1 | 9.4 | 29 | 13.8 | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12.1 | 70 | 34 | 29 | |
| 第1半旬 | 1～ 5 | 12.3 | 17.7 | 21.7 | 04 | 14.8 | 01 | 8.9 | 6.1 | 05 | 10.2 | 03 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.6 | 67 | 36 | 05 | |
| 第2半旬 | 6～10 | 11.7 | 16.5 | 19.3 | 10 | 14.7 | 08 | 7.4 | 3.0 | 06 | 10.5 | 09 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.0 | 65 | 34 | 06 | |
| 第3半旬 | 11～15 | 10.4 | 16.7 | 19.6 | 13 | 13.9 | 14 | 5.7 | 4.3 | 13 | 8.0 | 14 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.9 | 56 | 24 | 13 | |
| 第4半旬 | 16～20 | 10.0 | 15.4 | 16.2 | 20 | 14.0 | 16 | 5.6 | 2.8 | 16 | 7.2 | 17 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.3 | 61 | 27 | 20 | |
| 第5半旬 | 21～25 | 8.3 | 13.8 | 16.0 | 23 | 10.4 | 25 | 3.4 | 1.7 | 25 | 4.9 | 23 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.4 | 59 | 31 | 21 | |
| 第6半旬 | 26～30 | 9.5 | 13.1 | 16.4 | 29 | 10.5 | 26 | 6.0 | 0.5 | 26 | 10.5 | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.6 | 71 | 32 | 26 | |
| 第1半旬 | 1～ 5 | 9.8 | 15.0 | 16.0 | 04 | 13.4 | 03 | 6.4 | 5.7 | 04 | 7.4 | 01 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.6 | 64 | 34 | 04 | |
| 第2半旬 | 6～10 | 8.5 | 13.0 | 19.3 | 07 | 9.0 | 08 | 4.8 | 1.6 | 10 | 7.4 | 08* | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.8 | 62 | 34 | 07 | |
| 第3半旬 | 11～15 | 6.0 | 12.3 | 15.0 | 11 | 7.9 | 12 | 0.9 | -1.2 | 13 | 2.7 | 15 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 5.0 | 54 | 28 | 14 | |
| 第4半旬 | 16～20 | 7.4 | 13.5 | 18.8 | 18 | 10.2 | 20 | 2.7 | 0.6 | 20 | 6.3 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.4 | 52 | 29 | 20 | |
| 第5半旬 | 21～25 | 7.9 | 12.8 | 19.8 | 24 | 9.6 | 21 | 3.0 | -0.1 | 21 | 7.6 | 24 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 6.8 | 64 | 36 | 24 | |
| 第6半旬 | 26～31 | 2.5 | 6.4 | 9.5 | 31 | 3.1 | 27 | -0.7 | -2.6 | 30 | 1.6 | 28 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 5.1 | 70 | 29 | 29 | |