半旬ごとの値
 |  |
 |  |
 |  |  |  |  |
 |  |  |  |  |  |
 |  |  |  |  |
つくば（館野）（茨城県) 1981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 | 2.1 | 8.3 | 9.3 | 04 | 6.1 | 02 | -3.9 | -6.8 | 01 | 0.9 | 02 | 1 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 4.2 | 60 | 24 | 03 | |
| 第2半旬 | 6～10 | 1.6 | 9.2 | 11.0 | 09 | 7.5 | 06 | -4.9 | -7.4 | 06 | -2.0 | 08 | 1 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 3.7 | 55 | 25 | 08* | |
| 第3半旬 | 11～15 | -0.6 | 7.3 | 8.1 | 15* | 5.9 | 13 | -7.9 | -9.4 | 14 | -6.5 | 11 | 3 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 3.4 | 60 | 22 | 14 | |
| 第4半旬 | 16～20 | 0.5 | 8.0 | 11.0 | 19 | 6.1 | 16 | -6.1 | -7.7 | 17 | -3.9 | 16 | 1 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 4.1 | 67 | 24 | 20 | |
| 第5半旬 | 21～25 | 1.6 | 8.3 | 9.6 | 25 | 5.6 | 22 | -5.2 | -8.0 | 21 | -3.3 | 25 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 3.5 | 53 | 23 | 21 | |
| 第6半旬 | 26～31 | 0.7 | 8.3 | 9.0 | 29 | 7.4 | 27 | -5.6 | -7.0 | 31 | -3.3 | 26 | 1 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 3.1 | 49 | 21 | 26 | |
| 第1半旬 | 1～ 5 | 0.9 | 6.7 | 9.1 | 05 | 2.9 | 01 | -5.2 | -6.2 | 05 | -4.4 | 02 | 1 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 4.5 | 70 | 28 | 05 | |
| 第2半旬 | 6～10 | 2.5 | 10.5 | 11.9 | 08 | 8.8 | 07 | -5.0 | -6.3 | 08 | -2.9 | 06 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 4.5 | 63 | 22 | 08 | |
| 第3半旬 | 11～15 | 5.2 | 11.5 | 13.2 | 13 | 9.9 | 11 | -0.7 | -6.7 | 12 | 6.0 | 15 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 6.0 | 64 | 21 | 11 | |
| 第4半旬 | 16～20 | 3.6 | 9.7 | 17.3 | 16 | 5.3 | 20 | -3.0 | -7.5 | 18 | 2.7 | 16 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 6.1 | 75 | 34 | 19 | |
| 第5半旬 | 21～25 | 2.4 | 7.3 | 11.8 | 21 | 3.0 | 24 | -2.2 | -4.1 | 22 | 0.5 | 23 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 5.1 | 70 | 25 | 21 | |
| 第6半旬 | 26～28 | -0.7 | 6.4 | 7.9 | 28 | 5.6 | 27 | -7.8 | -8.5 | 28 | -7.4 | 27 | 2 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 2.9 | 49 | 22 | 27 | |
| 第1半旬 | 1～ 5 | 3.6 | 9.3 | 11.1 | 05 | 7.0 | 04 | -2.1 | -6.0 | 03 | 3.0 | 04 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 5.9 | 74 | 30 ) | 02 | |
| 第2半旬 | 6～10 | 5.0 | 10.8 | 15.0 | 08 | 5.8 | 09 | -0.8 | -3.0 | 06 | 2.3 | 09 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 5.8 | 69 | 22 | 06 | |
| 第3半旬 | 11～15 | 7.0 | 13.2 | 19.5 | 15 | 8.6 | 11 | 1.1 | -5.5 | 11 | 5.9 | 15 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 7.1 | 72 | 29 | 15 | |
| 第4半旬 | 16～20 | 8.2 | 15.8 | 19.1 | 19 | 12.7 | 17 | 0.3 | -3.2 | 18 | 7.1 | 20 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 6.9 | 63 | 21 | 17 | |
| 第5半旬 | 21～25 | 8.2 | 13.2 | 17.2 | 23 | 8.5 | 25 | 2.6 | -1.6 | 24 | 5.7 | 21 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 9.0 | 82 | 33 | 23 | |
| 第6半旬 | 26～31 | 7.4 | 12.0 | 15.0 | 26 | 6.9 | 31 | 2.8 | -1.8 | 28 | 6.0 | 26 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 6.7 | 64 | 22 | 27 | |
| 第1半旬 | 1～ 5 | 7.7 | 12.8 | 18.1 | 03 | 10.1 | 01 | 2.3 | -2.3 | 01 | 4.6 | 04* | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 7.5 | 73 | 18 | 03 | |
| 第2半旬 | 6～10 | 10.7 | 17.1 | 20.0 | 07 | 14.9 | 10 | 4.5 | -0.3 | 08 | 9.1 | 10 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 9.3 | 71 | 21 | 07 | |
| 第3半旬 | 11～15 | 12.3 | 18.7 | 25.2 | 11 | 13.3 | 13 | 5.4 | 1.4 | 14 | 9.5 | 11 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 8.9 | 63 | 17 | 15 | |
| 第4半旬 | 16～20 | 10.9 | 15.7 | 20.1 | 20 | 10.8 | 19 | 6.0 | 4.2 | 18 | 8.9 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.6 | 67 | 19 | 17 | |
| 第5半旬 | 21～25 | 15.0 | 22.5 | 25.1 | 24 | 20.0 | 21 | 6.0 | 3.6 | 22 | 7.6 | 25 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 10.7 | 64 | 23 | 23 | |
| 第6半旬 | 26～30 | 14.5 | 20.1 | 24.0 | 27 | 16.9 | 28 | 6.7 | 3.6 | 26 | 10.5 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11.0 | 65 | 29 | 29* | |
| 第1半旬 | 1～ 5 | 15.4 | 21.2 | 26.8 | 01 | 12.4 | 04 | 9.8 | 7.2 | 05 | 11.9 | 03* | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 13.5 | 78 | 32 | 05 | |
| 第2半旬 | 6～10 | 15.2 | 19.8 | 25.0 | 08 | 14.1 | 07 | 10.9 | 8.8 | 08 | 12.3 | 07 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 13.3 | 77 | 36 | 08 | |
| 第3半旬 | 11～15 | 15.1 | 20.6 | 23.3 | 15 | 17.4 | 11 | 11.4 | 10.2 | 11 | 12.2 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.5 | 81 | 29 | 14 | |
| 第4半旬 | 16～20 | 12.8 | 16.1 | 22.8 | 18 | 11.8 | 17 | 9.8 | 7.2 | 20 | 11.5 | 19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11.4 | 78 | 47 | 18 | |
| 第5半旬 | 21～25 | 16.6 | 23.6 | 30.0 | 23 | 15.4 | 24 | 9.3 | 5.7 | 21 | 11.7 | 24 | 0 | 0 | 0 | 0 | 0 | 3 | 1 | 0 | 12.9 | 72 | 25 | 23 | |
| 第6半旬 | 26～31 | 16.8 | 22.2 | 26.3 | 26 | 17.8 | 31 | 11.2 | 6.2 | 31 | 14.0 | 29 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 11.7 | 61 | 26 | 26 | |
| 第1半旬 | 1～ 5 | 16.9 | 21.8 | 23.1 | 03 | 18.1 | 01 | 12.2 | 9.9 | 01 | 14.4 | 05 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15.1 | 79 | 43 | 02 | |
| 第2半旬 | 6～10 | 19.8 | 25.2 | 26.4 | 08 | 23.8 | 07 | 15.8 | 14.6 | 06 | 17.3 | 10 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 19.1 | 84 | 48 | 09 | |
| 第3半旬 | 11～15 | 18.0 | 20.6 | 22.3 | 12* | 19.0 | 15 | 16.0 | 15.1 | 15 | 17.4 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20.1 | 97 | 76 | 11 | |
| 第4半旬 | 16～20 | 17.2 | 21.2 | 27.5 | 17 | 14.1 | 20 | 13.4 | 10.7 | 19 | 16.0 | 16 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 17.7 | 88 | 57 | 17 | |
| 第5半旬 | 21～25 | 17.3 | 21.3 | 28.1 | 23 | 14.5 | 21 | 13.1 | 11.0 | 21 | 15.2 | 23 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 17.5 | 87 | 49 | 24 | |
| 第6半旬 | 26～30 | 19.0 | 23.3 | 26.7 | 30 | 19.7 | 28 | 16.3 | 15.1 | 30 | 17.5 | 26 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 20.6 | 94 | 70 | 30 | |
| 第1半旬 | 1～ 5 | 19.8 | 22.7 | 26.0 | 05 | 20.1 | 03 | 17.6 | 16.6 | 01 | 19.1 | 02 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 21.2 | 92 | 69 | 05 | |
| 第2半旬 | 6～10 | 25.5 | 30.2 | 33.2 | 07 | 27.4 | 06 | 21.3 | 20.2 | 06 | 24.1 | 10 | 0 | 4 | 0 | 0 | 0 | 5 | 3 | 0 | 25.6 | 80 | 40 | 07 | |
| 第3半旬 | 11～15 | 26.3 | 31.7 | 33.1 | 13 | 30.7 | 14 | 22.9 | 22.0 | 15 | 24.2 | 11 | 0 | 5 | 0 | 0 | 0 | 5 | 5 | 0 | 27.7 | 81 | 57 | 12 | |
| 第4半旬 | 16～20 | 26.9 | 32.4 | 33.4 | 18 | 31.4 | 16 | 22.7 | 21.2 | 16 | 24.0 | 20 | 0 | 5 | 0 | 0 | 0 | 5 | 5 | 0 | 30.1 | 85 | 55 | 18 | |
| 第5半旬 | 21～25 | 23.3 | 28.8 | 31.0 | 21 | 26.7 | 24 | 19.7 | 18.1 | 24 | 23.4 | 21 | 0 | 1 | 0 | 0 | 0 | 5 | 2 | 0 | 25.6 | 88 | 62 | 25 | |
| 第6半旬 | 26～31 | 24.7 | 29.3 | 31.8 | 29 | 26.6 | 27 | 21.0 | 18.0 | 26 | 23.0 | 30 | 0 | 3 | 0 | 0 | 0 | 6 | 3 | 0 | 27.0 | 87 | 62 | 31 | |
| 第1半旬 | 1～ 5 | 25.4 | 31.6 | 32.9 | 02 | 30.5 | 04 | 19.6 | 15.3 | 05 | 21.5 | 02 | 0 | 4 | 0 | 0 | 0 | 5 | 5 | 0 | 25.5 | 79 | 49 | 02 | |
| 第2半旬 | 6～10 | 22.9 | 27.9 | 31.1 | 10 | 25.0 | 08 | 18.0 | 12.9 | 06 | 19.6 | 07 | 0 | 1 | 0 | 0 | 0 | 5 | 1 | 0 | 23.4 | 84 | 36 | 06 | |
| 第3半旬 | 11～15 | 24.3 | 28.3 | 29.9 | 11 | 26.6 | 15 | 21.4 | 19.4 | 15 | 22.5 | 11 | 0 | 2 | 0 | 0 | 0 | 5 | 0 | 0 | 25.5 | 84 | 58 | 13 | |
| 第4半旬 | 16～20 | 23.4 | 28.3 | 30.8 | 18 | 26.6 | 17 | 19.2 | 17.0 | 16 | 22.6 | 19 | 0 | 1 | 0 | 0 | 0 | 5 | 1 | 0 | 22.8 | 79 | 41 | 18 | |
| 第5半旬 | 21～25 | 24.0 | 28.6 | 30.6 | 23 | 26.9 | 21 | 19.8 | 16.3 | 25 | 22.1 | 22 | 0 | 1 | 0 | 0 | 0 | 5 | 1 | 0 | 26.0 | 88 | 53 | 24 | |
| 第6半旬 | 26～31 | 25.2 | 29.5 | 33.1 | 31 | 24.1 | 28 | 21.9 | 20.1 | 29* | 24.1 | 27 | 0 | 4 | 0 | 0 | 0 | 5 | 4 | 0 | 27.7 | 86 | 58 | 27 | |
| 第1半旬 | 1～ 5 | 23.8 | 27.5 | 30.4 | 02 | 22.1 | 05 | 20.5 | 17.6 | 05 | 21.7 | 04 | 0 | 2 | 0 | 0 | 0 | 4 | 1 | 0 | 25.4 | 85 | 57 | 05 | |
| 第2半旬 | 6～10 | 19.4 | 23.8 | 24.9 | 10 | 23.0 | 06 | 15.4 | 12.8 | 07 | 17.1 | 10* | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18.2 | 85 | 57 | 07 | |
| 第3半旬 | 11～15 | 18.5 | 22.4 | 24.8 | 13 | 19.4 | 12 | 15.5 | 13.0 | 15 | 16.9 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18.1 | 83 | 46 | 15 | |
| 第4半旬 | 16～20 | 17.5 | 22.6 | 24.7 | 18 | 20.3 | 20 | 12.5 | 10.1 | 17 | 15.0 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16.7 | 83 | 46 | 16 | |
| 第5半旬 | 21～25 | 19.2 | 23.7 | 26.1 | 24 | 20.4 | 25 | 14.9 | 12.7 | 22 | 17.8 | 25 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 19.5 | 87 | 60 | 24 | |
| 第6半旬 | 26～30 | 19.0 | 23.2 | 28.4 | 27 | 19.1 | 29 | 14.5 | 10.3 | 29 | 18.9 | 26 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 18.8 | 83 | 51 | 28 | |
| 第1半旬 | 1～ 5 | 17.1 | 22.6 | 25.8 | 02 | 18.2 | 01 | 11.3 | 6.0 | 04 | 16.1 | 01 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 15.6 | 79 | 41 | 04 | |
| 第2半旬 | 6～10 | 17.7 | 21.3 | 24.0 | 10 | 18.3 | 08 | 14.5 | 11.3 | 10* | 16.6 | 09* | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 17.7 | 87 | 39 | 10 | |
| 第3半旬 | 11～15 | 15.7 | 20.5 | 22.1 | 12 | 16.7 | 15 | 10.2 | 9.3 | 13 | 11.5 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.6 | 79 | 51 | 11 | |
| 第4半旬 | 16～20 | 14.5 | 20.7 | 23.9 | 19 | 16.6 | 16 | 8.9 | 7.1 | 17 | 11.1 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12.8 | 77 | 39 | 17 | |
| 第5半旬 | 21～25 | 14.0 | 19.6 | 22.0 | 23 | 17.1 | 21 | 7.8 | 3.0 | 25 | 11.6 | 22 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11.9 | 72 | 28 | 24 | |
| 第6半旬 | 26～31 | 12.3 | 17.7 | 19.0 | 31 | 14.8 | 29 | 6.2 | 5.1 | 28 | 8.1 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11.8 | 82 | 44 | 27 | |
| 第1半旬 | 1～ 5 | 12.6 | 16.4 | 20.4 | 01 | 13.7 | 02 | 9.9 | 8.1 | 01 | 11.4 | 02 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12.8 | 88 | 55 | 01 | |
| 第2半旬 | 6～10 | 5.8 | 10.5 | 12.7 | 08 | 8.2 | 07 | 2.4 | -0.4 | 10 | 5.9 | 07* | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 7.9 | 83 | 35 | 08 | |
| 第3半旬 | 11～15 | 6.4 | 14.7 | 15.8 | 14 | 13.1 | 12 | -0.6 | -1.0 | 14* | 0.3 | 15 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 7.4 | 78 | 39 | 11 | |
| 第4半旬 | 16～20 | 7.6 | 14.9 | 21.1 | 16 | 12.1 | 18 | 1.8 | -2.4 | 19 | 6.0 | 17 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 7.6 | 73 | 35 | 16 | |
| 第5半旬 | 21～25 | 6.1 | 11.6 | 17.4 | 24 | 5.0 | 23 | 0.5 | -3.2 | 23 | 4.2 | 25 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 6.6 | 69 | 30 | 24 | |
| 第6半旬 | 26～30 | 5.4 | 9.2 | 11.2 | 28 | 7.2 | 26 | 1.2 | -2.8 | 30 | 5.1 | 27 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 7.1 | 78 | 32 | 28 | |
| 第1半旬 | 1～ 5 | 3.1 | 9.3 | 11.4 | 05 | 6.2 | 01 | -2.4 | -5.3 | 04* | 3.8 | 01 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 6.0 | 75 | 27 | 02 | |
| 第2半旬 | 6～10 | 4.0 | 11.2 | 13.0 | 09 | 10.2 | 10 | -3.1 | -5.1 | 10 | -1.4 | 07 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 5.6 | 68 | 32 | 10* | |
| 第3半旬 | 11～15 | 3.5 | 9.9 | 13.4 | 12 | 8.0 | 15* | -2.0 | -3.9 | 11 | 0.1 | 13 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 4.5 | 56 | 25 | 15 | |
| 第4半旬 | 16～20 | 3.6 | 11.2 | 12.2 | 20 | 10.4 | 18* | -3.0 | -5.2 | 16 | 4.1 | 20 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 5.2 | 66 | 29 | 20 | |
| 第5半旬 | 21～25 | 3.1 | 10.7 | 12.8 | 24 | 5.0 | 25 | -3.3 | -4.5 | 25 | -1.5 | 21 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 5.4 | 72 | 25 | 24 | |
| 第6半旬 | 26～31 | 5.4 | 12.2 | 16.1 | 28 | 4.9 | 31 | -1.2 | -4.8 | 27 | 2.7 | 31 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 7.1 | 79 | 35 | 30 | |