半旬ごとの値
 |  |
 |  |
 |  |  |  |  |
 |  |  |  |  |  |
 |  |  |  |  |
銚子（千葉県) 1920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 | 5.8 | 9.5 | 13.4 | 01 | 7.4 | 04 | 1.9 | -0.6 | 05 | 4.0 | 03 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 74 | 44 | 04 | ||
| 第2半旬 | 6～10 | 6.9 | 11.8 | 13.9 | 08 | 9.5 | 06 | 2.1 | 0.4 | 06 | 4.0 | 07 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 76 | 42 | 09* | ||
| 第3半旬 | 11～15 | 8.3 | 12.3 | 16.9 | 13 | 7.7 | 15 | 3.5 | 1.9 | 15 | 7.4 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 72 | 36 | 13 | ||
| 第4半旬 | 16～20 | 5.0 | 9.2 | 10.2 | 17 | 7.0 | 16 | 1.0 | 0.5 | 17 | 1.5 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 66 | 37 | 17 | ||
| 第5半旬 | 21～25 | 5.2 | 9.7 | 10.8 | 24 | 8.3 | 22 | 1.2 | -0.5 | 23 | 3.3 | 21 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 70 | 38 | 22 | ||
| 第6半旬 | 26～31 | 7.2 | 10.9 | 12.5 | 31 | 9.3 | 30 | 4.1 | 1.5 | 27 | 6.2 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 75 | 46 | 26 | ||
| 第1半旬 | 1～ 5 | 8.6 | 11.4 | 15.5 | 03 | 7.7 | 04 | 6.5 | 5.4 | 04 | 8.1 | 01 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 86 | 59 | 04 | ||
| 第2半旬 | 6～10 | 4.2 | 6.8 | 10.7 | 06 | 4.5 | 08 | 1.5 | -0.2 | 09 | 4.2 | 06 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 77 | 40 | 10 | ||
| 第3半旬 | 11～15 | 2.0 | 5.8 | 8.2 | 15 | 4.5 | 11 | -1.4 | -2.2 | 14 | 1.5 | 15 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 63 | 31 | 13 | ||
| 第4半旬 | 16～20 | 5.2 | 8.0 | 9.3 | 17 | 5.5 | 20 | 1.5 | -0.1 | 17 | 3.2 | 18 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 72 | 48 | 20* | ||
| 第5半旬 | 21～25 | 4.3 | 7.3 | 9.1 | 24 | 4.7 | 21 | 1.6 | -0.7 | 21 | 4.4 | 25 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 69 | 41 | 21 | ||
| 第6半旬 | 26～29 | 4.9 | 6.6 | 8.7 | 26 | 4.6 | 29 | 3.5 | 2.5 | 29 | 4.2 | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 71 | 41 | 27 | ||
| 第1半旬 | 1～ 5 | 5.4 | 7.5 | 9.4 | 02 | 5.9 | 04 | 3.2 | 1.5 | 01 | 4.5 | 03 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 77 | 55 | 01 | ||
| 第2半旬 | 6～10 | 6.3 | 8.9 | 11.0 | 08 | 5.5 | 06 | 3.3 | -1.3 | 07 | 7.2 | 10 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 70 | 34 | 06 | ||
| 第3半旬 | 11～15 | 9.1 | 12.2 | 16.9 | 15 | 7.8 | 13 | 6.3 | 3.3 | 13 | 11.1 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 84 | 50 | 13 | ||
| 第4半旬 | 16～20 | 8.4 | 11.1 | 16.5 | 16 | 7.7 | 19 | 5.2 | 3.3 | 20 | 7.4 | 16 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 58 | 33 | 16 | ||
| 第5半旬 | 21～25 | 10.6 | 14.1 | 18.5 | 23 | 6.9 | 25 | 7.5 | 3.9 | 25 | 12.1 | 22 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 78 | 47 | 21 | ||
| 第6半旬 | 26～31 | 7.9 | 9.6 | 11.4 | 31 | 7.3 | 26 | 6.2 | 3.9 | 26 | 8.5 | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 81 | 58 | 27 | ||
| 第1半旬 | 1～ 5 | 12.0 | 14.4 | 17.7 | 04 | 10.3 | 02 | 10.0 | 7.0 | 01 | 14.8 | 04 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 96 | 79 | 01 | ||
| 第2半旬 | 6～10 | 10.4 | 12.9 | 15.1 | 10 | 11.6 | 08 | 8.1 | 6.5 | 10 | 9.1 | 06 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 68 | 48 | 09 | ||
| 第3半旬 | 11～15 | 14.2 | 17.7 | 19.5 | 14 | 15.5 | 11 | 11.6 | 9.6 | 12 | 14.3 | 14 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 79 | 52 | 12 | ||
| 第4半旬 | 16～20 | 14.8 | 18.8 | 20.7 | 19 | 15.9 | 16 | 11.2 | 9.2 | 19 | 13.1 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 85 | 61 | 20 | ||
| 第5半旬 | 21～25 | 12.4 | 15.0 | 19.7 | 21 | 11.5 | 25 | 9.3 | 7.0 | 24* | 13.5 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 68 | 37 | 23 | ||
| 第6半旬 | 26～30 | 13.9 | 17.1 | 20.0 | 30 | 14.2 | 26 | 10.0 | 8.3 | 28 | 12.1 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 79 | 46 | 28 | ||
| 第1半旬 | 1～ 5 | 14.8 | 16.9 | 18.5 | 05 | 14.5 | 02 | 13.2 | 11.9 | 03 | 14.8 | 04 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 93 | 61 | 01 | ||
| 第2半旬 | 6～10 | 16.0 | 18.4 | 21.0 | 09 | 16.5 | 10 | 14.1 | 12.5 | 10 | 15.5 | 09 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 94 | 76 | 09 | ||
| 第3半旬 | 11～15 | 13.3 | 15.5 | 16.5 | 14 | 14.5 | 13 | 11.8 | 11.2 | 15 | 12.3 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 92 | 77 | 14 | ||
| 第4半旬 | 16～20 | 15.5 | 19.3 | 22.2 | 20 | 16.0 | 19 | 12.4 | 10.5 | 16 | 14.5 | 17 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 81 | 54 | 20 | ||
| 第5半旬 | 21～25 | 17.9 | 21.6 | 23.7 | 23 | 18.7 | 21 | 14.7 | 14.2 | 22 | 15.4 | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 81 | 36 | 25 | ||
| 第6半旬 | 26～31 | 17.0 | 19.6 | 24.5 | 26 | 16.9 | 29 | 14.3 | 13.3 | 28 | 16.3 | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 78 | 37 | 26 | ||
| 第1半旬 | 1～ 5 | 19.4 | 22.4 | 23.7 | 02 | 20.6 | 01 | 15.9 | 13.7 | 01 | 17.5 | 04 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 89 | 62 | 02 | ||
| 第2半旬 | 6～10 | 19.7 | 22.3 | 24.8 | 08 | 20.0 | 09 | 16.7 | 15.9 | 08 | 17.0 | 09 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 80 | 59 | 06 | ||
| 第3半旬 | 11～15 | 18.9 | 21.3 | 25.4 | 15 | 19.0 | 11 | 17.3 | 16.3 | 11 | 19.5 | 15 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 88 | 71 | 15 | ||
| 第4半旬 | 16～20 | 20.0 | 22.5 | 25.9 | 17 | 19.6 | 20 | 18.4 | 17.1 | 19 | 20.0 | 16 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 96 | 77 | 16 | ||
| 第5半旬 | 21～25 | 18.1 | 20.1 | 22.8 | 25 | 18.8 | 21 | 16.6 | 15.9 | 21 | 17.7 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 94 | 79 | 23 | ||
| 第6半旬 | 26～30 | 19.4 | 21.4 | 23.9 | 30* | 17.9 | 29 | 16.8 | 15.7 | 29 | 17.8 | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 95 | 76 | 30 | ||
| 第1半旬 | 1～ 5 | 23.1 | 26.2 | 27.0 | 05 | 25.4 | 01 | 20.7 | 18.4 | 01 | 21.7 | 04 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 89 | 71 | 01 | ||
| 第2半旬 | 6～10 | 23.3 | 27.0 | 29.0 | 09* | 24.1 | 10 | 20.3 | 19.0 | 10 | 21.4 | 06 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 89 | 71 | 09* | ||
| 第3半旬 | 11～15 | 23.4 | 27.1 | 28.0 | 15 | 25.8 | 11 | 20.4 | 18.5 | 13 | 21.6 | 15 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 90 | 75 | 15 | ||
| 第4半旬 | 16～20 | 25.0 | 29.3 | 30.0 | 19 | 28.5 | 20 | 21.4 | 19.9 | 19 | 22.7 | 20 | 0 | 3 | 0 | 0 | 0 | 5 | 1 | 0 | 85 | 65 | 17 | ||
| 第5半旬 | 21～25 | 25.0 | 27.8 | 28.6 | 25 | 26.7 | 21 | 22.8 | 21.9 | 21 | 24.2 | 25 | 0 | 2 | 0 | 0 | 0 | 5 | 0 | 0 | 91 | 74 | 23* | ||
| 第6半旬 | 26～31 | 24.5 | 27.9 | 29.2 | 31 | 25.0 | 30 | 21.4 | 18.9 | 30 | 22.6 | 26 | 0 | 2 | 0 | 0 | 0 | 6 | 0 | 0 | 92 | 76 | 29 | ||
| 第1半旬 | 1～ 5 | 25.7 | 28.8 | 30.0 | 01 | 27.4 | 05 | 22.6 | 21.3 | 05* | 23.6 | 02 | 0 | 5 | 0 | 0 | 0 | 5 | 1 | 0 | 88 | 70 | 05 | ||
| 第2半旬 | 6～10 | 25.1 | 27.9 | 28.6 | 09 | 27.2 | 07 | 22.6 | 19.0 | 06 | 24.1 | 08 | 0 | 3 | 0 | 0 | 0 | 5 | 0 | 0 | 94 | 82 | 09 | ||
| 第3半旬 | 11～15 | 25.7 | 28.5 | 30.2 | 13 | 24.5 | 11 | 23.0 | 21.1 | 12 | 24.3 | 13 | 0 | 4 | 0 | 0 | 0 | 4 | 1 | 0 | 92 | 77 | 12 | ||
| 第4半旬 | 16～20 | 24.8 | 27.1 | 28.9 | 16 | 24.4 | 19 | 23.1 | 22.4 | 18 | 23.9 | 16 | 0 | 3 | 0 | 0 | 0 | 4 | 0 | 0 | 92 | 73 | 17 | ||
| 第5半旬 | 21～25 | 25.3 | 28.5 | 29.4 | 24 | 27.7 | 21 | 22.9 | 21.9 | 24 | 23.5 | 25 | 0 | 4 | 0 | 0 | 0 | 5 | 0 | 0 | 92 | 73 | 22 | ||
| 第6半旬 | 26～31 | 24.9 | 28.0 | 29.3 | 29 | 25.2 | 26 | 22.6 | 22.2 | 28 | 23.2 | 30 | 0 | 3 | 0 | 0 | 0 | 6 | 0 | 0 | 89 | 66 | 28 | ||
| 第1半旬 | 1～ 5 | 25.8 | 28.7 | 29.2 | 04 | 28.2 | 03 | 23.6 | 23.1 | 02 | 24.0 | 04 | 0 | 5 | 0 | 0 | 0 | 5 | 0 | 0 | 88 | 66 | 02 | ||
| 第2半旬 | 6～10 | 24.6 | 27.0 | 29.1 | 07 | 24.2 | 10 | 22.5 | 18.7 | 10 | 24.2 | 08 | 0 | 3 | 0 | 0 | 0 | 4 | 0 | 0 | 80 | 54 | 09 | ||
| 第3半旬 | 11～15 | 20.8 | 22.4 | 23.1 | 13 | 20.9 | 11 | 19.6 | 17.9 | 11 | 20.5 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 77 | 61 | 14* | ||
| 第4半旬 | 16～20 | 21.2 | 23.1 | 26.5 | 16 | 21.6 | 20* | 19.3 | 17.7 | 16 | 20.4 | 18 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 74 | 51 | 20* | ||
| 第5半旬 | 21～25 | 22.8 | 25.3 | 27.7 | 24 | 21.4 | 21 | 20.7 | 18.5 | 21 | 22.5 | 25* | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 71 | 49 | 21 | ||
| 第6半旬 | 26～30 | 21.2 | 22.7 | 24.5 | 30 | 21.5 | 28* | 19.8 | 19.0 | 27 | 20.7 | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 85 | 64 | 27 | ||
| 第1半旬 | 1～ 5 | 21.3 | 24.0 | 26.5 | 01 | 21.5 | 03 | 18.4 | 17.5 | 04 | 20.0 | 01 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 76 | 49 | 01 | ||
| 第2半旬 | 6～10 | 18.0 | 19.8 | 21.0 | 08 | 18.2 | 10 | 15.9 | 12.8 | 09 | 18.3 | 06 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 75 | 41 | 08 | ||
| 第3半旬 | 11～15 | 19.7 | 21.3 | 22.2 | 13 | 19.9 | 11 | 18.4 | 16.4 | 11 | 19.5 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 88 | 64 | 12 | ||
| 第4半旬 | 16～20 | 18.2 | 19.8 | 20.6 | 20 | 19.2 | 19 | 15.4 | 13.6 | 19 | 17.0 | 17 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 78 | 51 | 19 | ||
| 第5半旬 | 21～25 | 17.3 | 19.5 | 22.5 | 22 | 18.1 | 23 | 14.4 | 11.4 | 25 | 16.3 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 75 | 48 | 25 | ||
| 第6半旬 | 26～31 | 17.3 | 20.3 | 22.2 | 31 | 19.0 | 29 | 13.8 | 12.4 | 31 | 15.9 | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 81 | 52 | 31* | ||
| 第1半旬 | 1～ 5 | 19.2 | 21.9 | 23.6 | 05 | 20.5 | 03 | 16.1 | 14.0 | 04 | 17.7 | 05 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 81 | 61 | 02 | ||
| 第2半旬 | 6～10 | 16.6 | 20.1 | 21.5 | 09 | 18.5 | 07* | 11.8 | 9.3 | 07 | 16.4 | 09 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 72 | 45 | 08* | ||
| 第3半旬 | 11～15 | 13.8 | 16.0 | 17.3 | 12 | 14.0 | 14 | 11.1 | 7.0 | 15 | 13.9 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 77 | 51 | 14 | ||
| 第4半旬 | 16～20 | 15.7 | 18.4 | 22.0 | 18 | 15.8 | 16 | 12.3 | 10.3 | 16 | 14.1 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 76 | 50 | 19 | ||
| 第5半旬 | 21～25 | 14.6 | 17.2 | 19.2 | 21 | 16.0 | 22 | 12.8 | 11.8 | 22 | 14.2 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 83 | 52 | 22 | ||
| 第6半旬 | 26～30 | 11.3 | 14.5 | 17.0 | 27 | 12.3 | 30 | 7.3 | 5.3 | 30 | 11.6 | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 76 | 52 | 27 | ||
| 第1半旬 | 1～ 5 | 11.9 | 15.3 | 19.0 | 03 | 11.3 | 05 | 7.4 | 5.2 | 01 | 10.3 | 03 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 79 | 52 | 04 | ||
| 第2半旬 | 6～10 | 6.5 | 9.0 | 11.5 | 06 | 6.5 | 09 | 3.9 | 0.2 | 10 | 9.7 | 06 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 72 | 48 | 09 | ||
| 第3半旬 | 11～15 | 8.1 | 11.5 | 13.5 | 13 | 10.4 | 15 | 4.5 | 1.8 | 15 | 7.2 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 75 | 54 | 11 | ||
| 第4半旬 | 16～20 | 9.8 | 13.4 | 15.7 | 19 | 12.0 | 17 | 5.9 | 3.0 | 17 | 7.7 | 19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 80 | 52 | 16 | ||
| 第5半旬 | 21～25 | 8.5 | 11.4 | 14.4 | 22 | 9.0 | 23 | 4.3 | 3.5 | 23 | 5.6 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 67 | 41 | 22 | ||
| 第6半旬 | 26～31 | 5.7 | 9.4 | 15.0 | 27 | 6.6 | 29 | 1.6 | -1.5 | 29 | 5.4 | 27 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 59 | 37 | 28 | ||