半旬ごとの値
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室蘭（胆振地方) 1988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 | -2.6 | 0.1 | 2.9 | 01 | -3.5 | 05 | -5.3 | -7.4 | 05 | -3.7 | 04 | 5 | 0 | 5 | 0 | 2 | 0 | 0 | 0 | 3.5 | 68 | 50 | 05* | |
| 第2半旬 | 6～10 | -0.8 | 1.6 | 5.5 | 08 | -4.4 | 10 | -3.0 | -6.2 | 10 | 0.9 | 07 | 3 | 0 | 3 | 0 | 1 | 0 | 0 | 0 | 4.2 | 71 | 49 | 10* | |
| 第3半旬 | 11～15 | -0.1 | 2.0 | 4.6 | 14 | -4.3 | 11 | -3.2 | -6.7 | 11 | 1.5 | 14 | 2 | 0 | 4 | 0 | 1 | 0 | 0 | 0 | 4.3 | 68 | 48 | 15* | |
| 第4半旬 | 16～20 | -2.0 | -0.1 | 4.6 | 20 | -2.7 | 18 | -4.3 | -7.2 | 18 | -0.2 | 20 | 4 | 0 | 5 | 0 | 3 | 0 | 0 | 0 | 3.6 | 66 | 45 | 19 | |
| 第5半旬 | 21～25 | -1.2 | 1.3 | 7.8 | 22 | -5.3 | 25 | -4.2 | -8.4 | 25* | 2.7 | 22 | 3 | 0 | 4 | 0 | 2 | 0 | 0 | 0 | 4.6 | 74 | 50 | 23 | |
| 第6半旬 | 26～31 | -5.6 | -3.8 | -2.2 | 29 | -5.5 | 26 | -7.3 | -9.2 | 26 | -5.7 | 31 | 6 | 0 | 6 | 0 | 6 | 0 | 0 | 0 | 2.6 | 64 | 50 | 31 | |
| 第1半旬 | 1～ 5 | -3.5 | -1.0 | 3.3 | 02 | -3.5 | 03 | -5.9 | -8.1 | 03 | -3.6 | 05 | 4 | 0 | 5 | 0 | 4 | 0 | 0 | 0 | 3.3 | 68 | 45 | 02 | |
| 第2半旬 | 6～10 | -3.0 | -1.3 | 0.2 | 09 | -4.1 | 07 | -4.7 | -6.1 | 07 | -3.7 | 09 | 5 | 0 | 5 | 0 | 4 | 0 | 0 | 0 | 3.4 | 69 | 46 | 07 | |
| 第3半旬 | 11～15 | -4.6 | -2.1 | -1.4 | 11 | -3.3 | 15 | -6.7 | -8.6 | 15 | -5.0 | 12 | 5 | 0 | 5 | 0 | 5 | 0 | 0 | 0 | 3.0 | 68 | 43 | 14 | |
| 第4半旬 | 16～20 | -5.4 | -3.2 | -1.0 | 16 | -4.4 | 19 | -7.4 | -7.9 | 16 | -6.8 | 19 | 5 | 0 | 5 | 0 | 5 | 0 | 0 | 0 | 2.7 | 65 | 28 | 16 | |
| 第5半旬 | 21～25 | -2.5 | 0.0 | 1.8 | 23 | -0.8 | 25* | -5.5 | -7.7 | 21 | -2.8 | 23 | 5 | 0 | 5 | 0 | 3 | 0 | 0 | 0 | 3.6 | 70 | 42 | 25 | |
| 第6半旬 | 26～29 | -4.1 | -2.6 | -1.6 | 26 | -3.7 | 28 | -5.7 | -6.7 | 28 | -4.4 | 26 | 4 | 0 | 4 | 0 | 4 | 0 | 0 | 0 | 2.9 | 65 | 43 | 27 | |
| 第1半旬 | 1～ 5 | -1.4 | 0.1 | 1.1 | 03 | -0.8 | 01 | -3.0 | -4.5 | 05 | -1.5 | 02 | 5 | 0 | 5 | 0 | 2 | 0 | 0 | 0 | 4.1 | 74 | 49 | 05 | |
| 第2半旬 | 6～10 | -2.8 | -0.9 | 2.0 | 10 | -2.1 | 09 | -5.2 | -6.2 | 09 | -2.4 | 10 | 4 | 0 | 5 | 0 | 4 | 0 | 0 | 0 | 3.2 | 65 | 46 | 07 | |
| 第3半旬 | 11～15 | 2.5 | 5.8 | 8.2 | 11 | 3.0 | 15 | -0.5 | -6.6 | 15 | 1.4 | 12 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 5.4 | 71 | 44 | 15 | |
| 第4半旬 | 16～20 | 0.6 | 3.1 | 4.6 | 19 | 0.2 | 16 | -1.8 | -5.4 | 16 | 0.6 | 19 | 1 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 4.6 | 71 | 44 | 17 | |
| 第5半旬 | 21～25 | 1.0 | 2.9 | 4.8 | 21 | 0.5 | 24 | -0.7 | -2.7 | 24 | 0.4 | 23 | 1 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 4.4 | 67 | 35 | 25 | |
| 第6半旬 | 26～31 | 1.7 | 5.3 | 7.0 | 28 | 4.5 | 26 | -1.3 | -2.5 | 27 | -0.7 | 29 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 4.7 | 66 | 38 | 28 | |
| 第1半旬 | 1～ 5 | 2.3 | 5.7 | 7.9 | 04 | 4.6 | 03 | -0.1 | -1.0 | 01 | 0.6 | 04 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 5.7 | 79 | 39 | 04 | |
| 第2半旬 | 6～10 | 3.6 | 6.8 | 10.0 | 10 | 3.2 | 06 | 0.6 | -1.0 | 08 | 3.2 | 10 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 5.4 | 68 | 40 | 09 | |
| 第3半旬 | 11～15 | 6.7 | 11.1 | 13.5 | 13 | 8.6 | 15 | 3.0 | 1.5 | 14 | 4.4 | 13* | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.5 | 76 | 46 | 11 | |
| 第4半旬 | 16～20 | 7.0 | 11.1 | 16.4 | 17 | 7.5 | 19 | 3.9 | 3.0 | 16 | 5.0 | 19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.5 | 75 | 34 | 17 | |
| 第5半旬 | 21～25 | 4.3 | 7.5 | 9.3 | 25 | 4.8 | 22 | 2.3 | 1.8 | 22 | 2.6 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.6 | 80 | 49 | 24 | |
| 第6半旬 | 26～30 | 10.3 | 16.0 | 18.3 | 28 | 13.1 | 26 | 6.2 | 4.5 | 26 | 7.5 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.9 | 71 | 26 | 27 | |
| 第1半旬 | 1～ 5 | 9.2 | 13.6 | 16.8 | 02 | 9.9 | 05 | 6.0 | 4.1 | 05 | 9.0 | 01 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.3 | 72 | 25 | 02 | |
| 第2半旬 | 6～10 | 8.4 | 12.6 | 14.4 | 07 | 11.3 | 10 | 5.2 | 3.5 | 09 | 6.4 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.6 | 61 | 26 | 07 | |
| 第3半旬 | 11～15 | 9.9 | 13.1 | 15.7 | 14* | 10.3 | 13 | 7.2 | 6.7 | 14 | 8.1 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.6 | 79 | 42 | 14 | |
| 第4半旬 | 16～20 | 11.8 | 17.2 | 20.5 | 19 | 14.3 | 17 | 8.7 | 7.5 | 16 | 10.4 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11.7 | 86 | 53 | 19 | |
| 第5半旬 | 21～25 | 10.3 | 15.1 | 22.2 | 21 | 10.4 | 25 | 7.3 | 5.7 | 25 | 10.3 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.5 | 69 | 28 | 21 | |
| 第6半旬 | 26～31 | 10.4 | 13.7 | 17.9 | 30 | 9.4 | 26 | 8.3 | 5.7 | 26 | 10.1 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11.6 | 92 | 62 | 27 | |
| 第1半旬 | 1～ 5 | 13.0 | 16.3 | 18.4 | 05 | 14.3 | 03 | 10.8 | 9.5 | 01 | 11.8 | 04 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.7 | 92 | 64 | 05 | |
| 第2半旬 | 6～10 | 15.3 | 19.5 | 24.1 | 08 | 15.8 | 09 | 11.7 | 9.7 | 06 | 13.0 | 07 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.6 | 85 | 57 | 08 | |
| 第3半旬 | 11～15 | 11.8 | 15.0 | 17.8 | 14 | 10.9 | 13 | 10.1 | 9.7 | 13 | 10.7 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.1 | 95 | 75 | 14 | |
| 第4半旬 | 16～20 | 13.5 | 17.2 | 19.9 | 20 | 13.6 | 17 | 11.5 | 10.5 | 16 | 12.5 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.7 | 89 | 61 | 20 | |
| 第5半旬 | 21～25 | 15.5 | 19.5 | 22.1 | 24 | 17.2 | 22 | 13.4 | 12.0 | 22 | 15.2 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15.2 | 86 | 51 | 24 | |
| 第6半旬 | 26～30 | 15.3 | 18.2 | 19.7 | 26 | 17.5 | 29 | 13.5 | 12.1 | 29 | 14.4 | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15.8 | 91 | 73 | 30 | |
| 第1半旬 | 1～ 5 | 14.9 | 18.2 | 20.3 | 05 | 16.0 | 03 | 13.1 | 12.2 | 03 | 14.1 | 05 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.2 | 85 | 70 | 01 | |
| 第2半旬 | 6～10 | 16.3 | 18.4 | 24.0 | 06 | 15.6 | 08 | 14.8 | 14.2 | 10 | 15.3 | 06 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16.9 | 92 | 63 | 06 | |
| 第3半旬 | 11～15 | 14.1 | 15.9 | 17.7 | 12 | 14.0 | 15 | 13.3 | 12.6 | 15* | 13.9 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.9 | 93 | 79 | 13 | |
| 第4半旬 | 16～20 | 13.9 | 15.3 | 16.3 | 20* | 14.2 | 18 | 13.0 | 12.3 | 19* | 13.7 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.7 | 92 | 82 | 20 | |
| 第5半旬 | 21～25 | 15.7 | 18.6 | 19.5 | 22 | 16.3 | 25 | 13.8 | 13.6 | 21 | 14.0 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.6 | 82 | 62 | 22 | |
| 第6半旬 | 26～31 | 16.1 | 19.0 | 22.6 | 31 | 14.3 | 27 | 13.9 | 13.4 | 28 | 14.7 | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15.0 | 82 | 64 | 28 | |
| 第1半旬 | 1～ 5 | 22.6 | 27.3 | 31.1 | 03 | 24.5 | 01 | 18.8 | 17.4 | 01 | 20.7 | 04 | 0 | 0 | 0 | 0 | 0 | 4 | 1 | 0 | 21.3 | 79 | 35 | 03 | |
| 第2半旬 | 6～10 | 21.6 | 26.1 | 29.3 | 09 | 23.2 | 10 | 19.1 | 16.9 | 10 | 20.1 | 06 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 22.9 | 88 | 57 | 09 | |
| 第3半旬 | 11～15 | 18.6 | 19.8 | 21.2 | 15 | 18.9 | 14 | 17.6 | 16.6 | 15 | 18.5 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20.3 | 95 | 73 | 15 | |
| 第4半旬 | 16～20 | 18.3 | 19.7 | 21.1 | 20 | 18.0 | 17 | 17.4 | 16.0 | 17 | 19.4 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 19.9 | 94 | 72 | 16 | |
| 第5半旬 | 21～25 | 20.9 | 22.9 | 25.1 | 24 | 21.1 | 21 | 19.9 | 19.5 | 24 | 20.7 | 25 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 24.1 | 97 | 82 | 24 | |
| 第6半旬 | 26～31 | 19.6 | 21.6 | 24.8 | 27 | 18.5 | 29 | 18.4 | 17.5 | 29 | 19.2 | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 21.5 | 95 | 78 | 27 | |
| 第1半旬 | 1～ 5 | 17.8 | 20.1 | 24.9 | 01 | 18.0 | 03 | 16.6 | 16.1 | 03 | 18.0 | 01 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 17.4 | 84 | 64 | 05 | |
| 第2半旬 | 6～10 | 18.5 | 21.1 | 22.9 | 07 | 19.0 | 09 | 16.5 | 15.5 | 10 | 18.0 | 07 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18.8 | 88 | 59 | 07 | |
| 第3半旬 | 11～15 | 19.0 | 22.6 | 23.7 | 12 | 20.9 | 11 | 16.2 | 14.7 | 11 | 17.1 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18.3 | 83 | 54 | 13 | |
| 第4半旬 | 16～20 | 18.4 | 20.6 | 21.6 | 17 | 20.1 | 19 | 16.3 | 14.6 | 17 | 17.4 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18.2 | 85 | 65 | 17 | |
| 第5半旬 | 21～25 | 18.2 | 21.8 | 23.7 | 23 | 18.1 | 25 | 14.9 | 14.2 | 25 | 15.9 | 23 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15.8 | 75 | 49 | 23 | |
| 第6半旬 | 26～30 | 16.0 | 18.8 | 20.8 | 26 | 16.9 | 30 | 13.3 | 12.5 | 27 | 14.1 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.3 | 73 | 55 | 26 | |
| 第1半旬 | 1～ 5 | 15.1 | 18.4 | 19.4 | 02 | 16.5 | 03 | 12.4 | 10.3 | 05 | 14.0 | 01 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11.6 | 67 | 40 | 02 | |
| 第2半旬 | 6～10 | 15.3 | 18.0 | 20.3 | 08 | 16.8 | 10 | 13.3 | 12.3 | 10 | 14.1 | 06 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.8 | 79 | 55 | 08 | |
| 第3半旬 | 11～15 | 11.9 | 14.8 | 17.8 | 11 | 10.1 | 13 | 8.3 | 4.9 | 13 | 11.9 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.0 | 62 | 37 | 15 | |
| 第4半旬 | 16～20 | 11.3 | 14.4 | 15.7 | 18 | 13.1 | 17 | 7.9 | 6.8 | 20 | 9.1 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.8 | 66 | 44 | 16 | |
| 第5半旬 | 21～25 | 10.7 | 13.1 | 15.6 | 21 | 11.6 | 23 | 8.0 | 5.1 | 24 | 11.4 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.8 | 51 | 31 | 25 | |
| 第6半旬 | 26～31 | 8.1 | 10.5 | 12.5 | 26 | 8.5 | 30 | 6.0 | 4.7 | 30 | 7.2 | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.5 | 69 | 40 | 31 | |
| 第1半旬 | 1～ 5 | 7.0 | 10.0 | 12.1 | 01 | 4.0 | 03 | 3.3 | 0.7 | 03 | 5.3 | 05 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.0 | 69 | 44 | 04 | |
| 第2半旬 | 6～10 | 5.6 | 10.1 | 15.1 | 09 | 6.9 | 08 | 2.5 | -0.9 | 10 | 6.9 | 09 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 6.5 | 68 | 43 | 09 | |
| 第3半旬 | 11～15 | 2.9 | 5.6 | 10.2 | 13 | 0.4 | 11 | 0.5 | -3.1 | 11 | 5.3 | 13 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 5.0 | 64 | 39 | 13 | |
| 第4半旬 | 16～20 | 2.1 | 5.3 | 6.2 | 19 | 4.0 | 16 | -0.1 | -1.4 | 20 | 1.2 | 17 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 3.9 | 54 | 36 | 18 | |
| 第5半旬 | 21～25 | 5.3 | 8.0 | 12.0 | 24 | 4.4 | 25 | 2.2 | -0.8 | 25 | 3.5 | 23 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 6.7 | 73 | 42 | 21 | |
| 第6半旬 | 26～30 | 4.0 | 6.8 | 8.2 | 28 | 5.2 | 30 | 1.7 | -0.6 | 26 | 3.3 | 28 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 5.4 | 66 | 45 | 29 | |
| 第1半旬 | 1～ 5 | 4.5 | 7.3 | 10.1 | 04 | 4.0 | 01 | 1.9 | -2.4 | 05 | 6.2 | 04 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 6.0 | 69 | 45 | 02 | |
| 第2半旬 | 6～10 | 4.4 | 7.7 | 12.4 | 09 | 1.8 | 10 | 1.1 | -4.0 | 06 | 6.7 | 08 | 1 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 6.2 | 70 | 47 | 10 | |
| 第3半旬 | 11～15 | 2.7 | 5.1 | 9.0 | 14 | 1.0 | 11 | -0.5 | -3.3 | 11 | 0.9 | 14 | 1 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 5.5 | 71 | 39 | 15 | |
| 第4半旬 | 16～20 | -0.2 | 1.7 | 3.0 | 20 | 0.5 | 17 | -1.7 | -2.5 | 17 | -1.2 | 19* | 2 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 4.1 | 68 | 42 | 18 | |
| 第5半旬 | 21～25 | -2.4 | -0.5 | 1.6 | 23 | -2.9 | 22 | -4.6 | -6.3 | 22 | -2.0 | 24 | 5 | 0 | 5 | 0 | 3 | 0 | 0 | 0 | 3.6 | 69 | 51 | 21 | |
| 第6半旬 | 26～31 | -2.3 | 0.2 | 3.4 | 31 | -2.5 | 29 | -4.7 | -8.0 | 28 | -0.2 | 31 | 5 | 0 | 6 | 0 | 2 | 0 | 0 | 0 | 3.6 | 69 | 46 | 28 | |