半旬ごとの値
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銚子（千葉県) 1999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 | 5.7 | 9.5 | 9.9 | 02 | 8.2 | 01 | 1.9 | 0.9 | 05 | 3.1 | 04 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.7 | 52 | 26 | 01 | |
| 第2半旬 | 6～10 | 5.0 | 9.1 | 12.0 | 06 | 6.4 | 09* | 1.2 | -1.2 | 09 | 4.5 | 07 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 5.1 | 56 | 19 | 09 | |
| 第3半旬 | 11～15 | 5.7 | 10.0 | 11.0 | 14 | 9.1 | 11 | 2.2 | 1.4 | 13 | 3.5 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.6 | 51 | 23 | 11 | |
| 第4半旬 | 16～20 | 7.8 | 11.7 | 14.8 | 20 | 7.5 | 17 | 2.9 | 1.7 | 17 | 4.8 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.9 | 64 | 30 | 17 | |
| 第5半旬 | 21～25 | 8.2 | 12.2 | 14.4 | 23 | 10.6 | 21 | 4.3 | 2.0 | 22 | 7.3 | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.1 | 64 | 27 | 23 | |
| 第6半旬 | 26～31 | 8.0 | 11.6 | 16.2 | 28 | 5.6 | 30 | 3.5 | 1.5 | 31 | 6.4 | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.0 | 65 | 28 | 29 | |
| 第1半旬 | 1～ 5 | 5.1 | 9.0 | 12.0 | 02 | 6.1 | 04 | 0.9 | -2.7 | 04 | 3.7 | 02* | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 5.1 | 57 | 27 | 04 | |
| 第2半旬 | 6～10 | 7.3 | 11.5 | 13.7 | 08 | 9.1 | 06 | 3.1 | 1.0 | 06 | 6.3 | 09 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.3 | 52 | 23 | 08* | |
| 第3半旬 | 11～15 | 5.1 | 8.8 | 11.7 | 11 | 5.7 | 13 | 1.1 | -0.4 | 15 | 3.6 | 11 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 5.0 | 55 | 21 | 14 | |
| 第4半旬 | 16～20 | 9.0 | 13.1 | 18.0 | 18 | 10.1 | 20 | 4.6 | 2.6 | 20 | 7.2 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.5 | 65 | 28 | 17 | |
| 第5半旬 | 21～25 | 7.5 | 11.0 | 13.1 | 25 | 7.3 | 21 | 2.8 | 0.2 | 22 | 5.0 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.2 | 59 | 24 | 22 | |
| 第6半旬 | 26～28 | 9.1 | 13.7 | 16.2 | 27 | 11.1 | 28 | 2.7 | 0.9 | 28 | 4.3 | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.7 | 61 | 19 | 28 | |
| 第1半旬 | 1～ 5 | 10.9 | 14.9 | 18.4 | 05 | 12.9 | 01 | 6.0 | 3.6 | 01 | 8.4 | 05 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.7 | 65 | 25 | 02 | |
| 第2半旬 | 6～10 | 9.3 | 12.1 | 16.0 | 06 | 9.9 | 10* | 7.4 | 5.5 | 09 | 10.1 | 06 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.2 | 70 | 24 | 06 | |
| 第3半旬 | 11～15 | 10.9 | 13.4 | 17.8 | 15 | 9.0 | 12 | 7.5 | 5.6 | 12 | 14.5 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.5 | 68 | 30 | 12 | |
| 第4半旬 | 16～20 | 12.9 | 17.0 | 19.5 | 18 | 11.6 | 20 | 9.3 | 4.6 | 20 | 14.4 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12.1 | 80 | 52 | 17 | |
| 第5半旬 | 21～25 | 9.7 | 13.1 | 17.5 | 24 | 9.9 | 23 | 6.0 | 2.0 | 23 | 11.0 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.9 | 70 | 26 | 22 | |
| 第6半旬 | 26～31 | 10.3 | 12.6 | 16.0 | 27 | 9.3 | 29 | 8.0 | 4.5 | 29 | 11.1 | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.6 | 73 | 31 | 29 | |
| 第1半旬 | 1～ 5 | 13.0 | 16.0 | 19.3 | 02 | 11.2 | 03 | 9.0 | 6.6 | 01 | 11.0 | 05 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11.2 | 73 | 40 | 03 | |
| 第2半旬 | 6～10 | 11.3 | 14.8 | 16.9 | 06 | 12.3 | 08 | 7.8 | 4.1 | 09 | 11.8 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.2 | 67 | 30 | 09 | |
| 第3半旬 | 11～15 | 15.6 | 18.2 | 20.2 | 13 | 16.5 | 11 | 13.3 | 11.8 | 15 | 14.5 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.1 | 80 | 47 | 14 | |
| 第4半旬 | 16～20 | 15.3 | 17.4 | 18.5 | 20 | 15.7 | 19 | 13.3 | 10.5 | 17 | 14.2 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.2 | 82 | 62 | 17 | |
| 第5半旬 | 21～25 | 15.7 | 18.4 | 19.8 | 25 | 16.9 | 21 | 13.1 | 12.2 | 22 | 13.8 | 23 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.8 | 83 | 54 | 21 | |
| 第6半旬 | 26～30 | 15.5 | 18.1 | 19.9 | 28* | 15.5 | 29 | 13.0 | 8.0 | 30 | 15.2 | 28* | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.7 | 76 | 39 | 30 | |
| 第1半旬 | 1～ 5 | 17.4 | 20.6 | 24.1 | 05 | 18.9 | 04 | 14.8 | 11.2 | 01 | 16.5 | 05* | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.9 | 75 | 44 | 02 | |
| 第2半旬 | 6～10 | 18.0 | 21.3 | 23.9 | 07 | 18.0 | 06 | 15.5 | 14.0 | 07 | 16.7 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16.4 | 80 | 32 | 07 | |
| 第3半旬 | 11～15 | 17.8 | 20.7 | 22.7 | 13 | 18.4 | 11 | 15.3 | 14.2 | 12 | 16.8 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16.1 | 79 | 50 | 12 | |
| 第4半旬 | 16～20 | 18.1 | 20.5 | 23.0 | 20 | 17.9 | 16 | 16.0 | 14.5 | 18 | 17.5 | 20* | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16.9 | 81 | 55 | 18 | |
| 第5半旬 | 21～25 | 19.9 | 24.3 | 26.3 | 21 | 21.8 | 24 | 17.0 | 16.1 | 24 | 17.7 | 22 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 18.3 | 80 | 25 | 21 | |
| 第6半旬 | 26～31 | 18.8 | 21.4 | 22.6 | 31* | 19.6 | 28 | 16.9 | 15.0 | 30 | 18.4 | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18.6 | 86 | 58 | 30 | |
| 第1半旬 | 1～ 5 | 20.2 | 24.0 | 25.4 | 04 | 22.2 | 01 | 17.6 | 16.0 | 02 | 19.4 | 04 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 19.4 | 82 | 54 | 04 | |
| 第2半旬 | 6～10 | 20.8 | 23.6 | 25.6 | 06 | 21.5 | 07 | 18.5 | 18.2 | 08 | 18.8 | 06 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 20.1 | 82 | 56 | 09 | |
| 第3半旬 | 11～15 | 22.6 | 26.0 | 27.4 | 15 | 24.3 | 11 | 20.3 | 19.0 | 12 | 21.0 | 15 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 21.1 | 77 | 47 | 12 | |
| 第4半旬 | 16～20 | 19.2 | 22.3 | 28.5 | 16 | 18.9 | 20 | 17.2 | 15.5 | 18 | 20.5 | 16 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 20.4 | 92 | 63 | 16 | |
| 第5半旬 | 21～25 | 21.4 | 24.2 | 26.0 | 24 | 22.0 | 21 | 19.3 | 17.1 | 21 | 21.9 | 24 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 22.6 | 89 | 70 | 22 | |
| 第6半旬 | 26～30 | 21.4 | 23.3 | 24.7 | 30 | 21.9 | 29 | 19.8 | 18.9 | 29 | 21.2 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 23.7 | 92 | 81 | 29 | |
| 第1半旬 | 1～ 5 | 22.3 | 25.3 | 29.0 | 04 | 21.8 | 05 | 20.2 | 19.1 | 02 | 21.5 | 03 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 24.1 | 90 | 66 | 04 | |
| 第2半旬 | 6～10 | 20.3 | 22.2 | 22.6 | 08 | 21.3 | 10 | 19.0 | 18.5 | 07 | 19.4 | 09 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20.2 | 85 | 67 | 06 | |
| 第3半旬 | 11～15 | 24.4 | 27.0 | 28.6 | 14 | 25.5 | 13 | 22.3 | 20.7 | 11 | 24.2 | 14 | 0 | 2 | 0 | 0 | 0 | 5 | 0 | 0 | 28.2 | 93 | 77 | 12 | |
| 第4半旬 | 16～20 | 24.8 | 27.3 | 29.5 | 16 | 24.5 | 19 | 23.0 | 21.7 | 19 | 24.6 | 17 | 0 | 2 | 0 | 0 | 0 | 4 | 0 | 0 | 27.7 | 89 | 73 | 17 | |
| 第5半旬 | 21～25 | 26.5 | 29.9 | 30.7 | 22 | 29.1 | 24 | 24.3 | 24.0 | 22* | 24.7 | 23 | 0 | 5 | 0 | 0 | 0 | 5 | 3 | 0 | 29.5 | 86 | 70 | 25 | |
| 第6半旬 | 26～31 | 26.9 | 30.1 | 30.4 | 28 | 29.8 | 31* | 24.6 | 24.0 | 31 | 25.2 | 28 | 0 | 6 | 0 | 1 | 0 | 6 | 3 | 0 | 30.5 | 86 | 71 | 30 | |
| 第1半旬 | 1～ 5 | 27.4 | 30.9 | 31.3 | 03 | 30.6 | 05* | 24.6 | 24.1 | 02 | 24.9 | 05* | 0 | 5 | 0 | 0 | 0 | 5 | 5 | 0 | 30.9 | 85 | 67 | 01 | |
| 第2半旬 | 6～10 | 27.0 | 30.5 | 31.2 | 10 | 30.0 | 07 | 24.5 | 24.2 | 08 | 24.7 | 10* | 0 | 5 | 0 | 0 | 0 | 5 | 5 | 0 | 30.3 | 85 | 70 | 10 | |
| 第3半旬 | 11～15 | 26.3 | 29.3 | 31.1 | 15 | 26.9 | 14 | 24.4 | 23.9 | 12 | 25.0 | 14 | 0 | 5 | 0 | 1 | 0 | 5 | 2 | 0 | 30.0 | 88 | 68 | 11 | |
| 第4半旬 | 16～20 | 27.5 | 31.2 | 31.7 | 19 | 30.8 | 18 | 25.3 | 24.9 | 20 | 25.7 | 19 | 0 | 5 | 0 | 4 | 0 | 5 | 5 | 0 | 30.5 | 83 | 63 | 19 | |
| 第5半旬 | 21～25 | 27.1 | 31.0 | 33.4 | 23 | 28.2 | 25 | 24.6 | 24.0 | 25 | 25.2 | 22 | 0 | 5 | 0 | 2 | 0 | 5 | 4 | 0 | 28.9 | 81 | 47 | 23 | |
| 第6半旬 | 26～31 | 26.2 | 29.1 | 31.1 | 31 | 27.5 | 30* | 24.3 | 23.7 | 28 | 25.6 | 29 | 0 | 6 | 0 | 1 | 0 | 6 | 2 | 0 | 28.4 | 83 | 67 | 31 | |
| 第1半旬 | 1～ 5 | 26.0 | 28.7 | 30.4 | 01 | 27.3 | 02 | 24.0 | 22.0 | 05 | 24.9 | 01 | 0 | 5 | 0 | 0 | 0 | 5 | 1 | 0 | 25.6 | 77 | 39 | 05 | |
| 第2半旬 | 6～10 | 26.8 | 30.1 | 30.8 | 09 | 29.1 | 06 | 24.9 | 23.9 | 06 | 25.6 | 08 | 0 | 5 | 0 | 2 | 0 | 5 | 3 | 0 | 28.5 | 81 | 58 | 06 | |
| 第3半旬 | 11～15 | 27.0 | 30.8 | 32.6 | 12 | 29.6 | 13* | 24.4 | 22.0 | 15 | 25.5 | 11 | 0 | 5 | 0 | 2 | 0 | 5 | 3 | 0 | 29.6 | 84 | 59 | 12 | |
| 第4半旬 | 16～20 | 24.7 | 26.6 | 30.3 | 20 | 24.5 | 17 | 23.0 | 22.2 | 16 | 24.9 | 20 | 0 | 2 | 0 | 0 | 0 | 4 | 1 | 0 | 27.1 | 87 | 67 | 16 | |
| 第5半旬 | 21～25 | 24.1 | 26.8 | 31.1 | 25 | 23.4 | 22 | 21.6 | 19.9 | 24 | 25.0 | 25 | 0 | 2 | 0 | 1 | 0 | 3 | 1 | 0 | 25.7 | 86 | 61 | 25 | |
| 第6半旬 | 26～30 | 24.0 | 26.1 | 26.9 | 28 | 25.6 | 30* | 22.0 | 20.5 | 28 | 23.5 | 26 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 23.3 | 79 | 47 | 26 | |
| 第1半旬 | 1～ 5 | 22.1 | 24.5 | 27.4 | 03 | 21.6 | 05 | 19.6 | 17.8 | 05 | 21.5 | 02* | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 20.1 | 74 | 47 | 04 | |
| 第2半旬 | 6～10 | 20.8 | 23.2 | 26.9 | 07 | 21.1 | 10 | 19.0 | 17.9 | 10 | 20.8 | 08 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 18.7 | 75 | 49 | 10 | |
| 第3半旬 | 11～15 | 21.0 | 23.5 | 25.3 | 14 | 20.4 | 15 | 17.9 | 16.2 | 11 | 20.6 | 13 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 21.3 | 86 | 63 | 15 | |
| 第4半旬 | 16～20 | 17.5 | 19.1 | 21.8 | 16 | 17.8 | 18 | 15.9 | 14.5 | 20 | 16.8 | 17* | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.9 | 74 | 46 | 19 | |
| 第5半旬 | 21～25 | 17.8 | 20.2 | 21.9 | 23 | 18.2 | 24 | 14.9 | 13.8 | 21 | 16.0 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.6 | 67 | 38 | 25 | |
| 第6半旬 | 26～31 | 19.4 | 22.5 | 24.9 | 28 | 20.6 | 26 | 15.7 | 13.7 | 26 | 17.3 | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16.2 | 72 | 37 | 28 | |
| 第1半旬 | 1～ 5 | 16.8 | 18.9 | 24.3 | 01 | 16.2 | 04 | 13.8 | 9.3 | 05 | 16.6 | 01 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.9 | 71 | 39 | 05 | |
| 第2半旬 | 6～10 | 16.5 | 18.9 | 20.4 | 06 | 15.5 | 10 | 13.2 | 11.1 | 06 | 15.4 | 09 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.4 | 71 | 39 | 10 | |
| 第3半旬 | 11～15 | 17.0 | 20.5 | 23.0 | 12 | 18.4 | 11 | 12.7 | 8.3 | 11 | 16.1 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.2 | 74 | 46 | 13 | |
| 第4半旬 | 16～20 | 13.6 | 16.6 | 18.8 | 20 | 14.0 | 17 | 9.1 | 6.4 | 17 | 11.7 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.3 | 65 | 34 | 17 | |
| 第5半旬 | 21～25 | 14.7 | 18.4 | 19.3 | 25 | 16.7 | 23 | 11.3 | 9.5 | 21 | 12.6 | 23 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.1 | 79 | 43 | 21 | |
| 第6半旬 | 26～30 | 12.2 | 15.7 | 17.7 | 26 | 14.4 | 27 | 8.5 | 7.1 | 29 | 10.1 | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.1 | 63 | 28 | 29 | |
| 第1半旬 | 1～ 5 | 10.6 | 14.0 | 16.3 | 05 | 12.0 | 04 | 6.8 | 4.2 | 04 | 8.5 | 02 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.1 | 69 | 30 | 03 | |
| 第2半旬 | 6～10 | 11.2 | 14.4 | 17.0 | 09 | 11.0 | 07 | 7.2 | 3.8 | 08 | 9.9 | 09 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.8 | 64 | 29 | 07 | |
| 第3半旬 | 11～15 | 9.7 | 13.0 | 16.1 | 11 | 11.2 | 14 | 5.9 | 4.0 | 13 | 8.5 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.1 | 59 | 35 | 11 | |
| 第4半旬 | 16～20 | 8.5 | 11.6 | 15.4 | 17 | 9.4 | 20 | 4.8 | 3.1 | 20 | 8.0 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.7 | 61 | 27 | 20 | |
| 第5半旬 | 21～25 | 7.5 | 11.9 | 16.0 | 25 | 9.9 | 23 | 2.8 | 1.8 | 22 | 5.6 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.4 | 52 | 17 | 21 | |
| 第6半旬 | 26～31 | 9.3 | 12.4 | 14.0 | 29 | 9.6 | 27 | 5.5 | 2.7 | 27 | 10.4 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.2 | 61 | 30 | 26 | |