旬ごとの値
 |  |
 |  |
 |  |  |  |  |
 |  |  |  |  |  |
 |  |  |  |  |
倶知安（後志地方) 1999年（旬ごとの値） 詳細（気温・蒸気圧・湿度）
| 月 | 旬 | 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 | |||||||||||||||
| 上旬 | -8.1 | -3.8 | 1.5 | 05 | -8.6 | 08 | -13.3 | -17.7 | 04 | -6.5 | 05 | 10 | 0 | 10 | 0 | 8 | 0 | 0 | 0 | 2.9 | 85 | 55 | 06 | |
| 中旬 | -3.3 | -0.4 | 3.8 | 19 | -3.0 | 15 | -7.1 | -8.7 | 19 | -4.4 | 12 | 10 | 0 | 10 | 0 | 6 | 0 | 0 | 0 | 4.3 | 87 | 62 | 19* | |
| 下旬 | -5.4 | -2.0 | 7.4 | 25 | -7.9 | 29 | -8.5 | -14.5 | 29 | -4.9 | 26 | 10 | 0 | 11 | 0 | 9 | 0 | 0 | 0 | 3.4 | 81 | 39 | 26 | |
| 上旬 | -6.9 | -3.4 | -0.8 | 07 | -6.3 | 03* | -10.8 | -18.3 | 03 | -6.6 | 06 | 10 | 0 | 10 | 0 | 10 | 0 | 0 | 0 | 3.2 | 86 | 46 | 03 | |
| 中旬 | -4.9 | -1.1 | 7.1 | 17 | -5.9 | 20 | -9.6 | -16.4 | 12 | -4.8 | 16 | 8 | 0 | 10 | 0 | 6 | 0 | 0 | 0 | 3.6 | 81 | 44 | 11 | |
| 下旬 | -3.6 | 0.1 | 4.7 | 27 | -5.0 | 21 | -8.0 | -11.0 | 24 | -4.9 | 25 | 8 | 0 | 8 | 0 | 4 | 0 | 0 | 0 | 4.0 | 84 | 47 | 28 | |
| 上旬 | -4.2 | 0.3 | 3.9 | 05 | -3.2 | 09 | -9.2 | -14.7 | 10 | -4.4 | 02 | 10 | 0 | 10 | 0 | 5 | 0 | 0 | 0 | 3.6 | 79 | 46 | 02* | |
| 中旬 | -1.0 | 2.2 | 7.5 | 14 | -4.2 | 12 | -4.7 | -14.9 | 13 | 1.3 | 14 | 5 | 0 | 8 | 0 | 3 | 0 | 0 | 0 | 4.6 | 78 | 44 | 20 | |
| 下旬 | -1.6 | 2.5 | 10.8 | 26 | -2.6 | 28 | -6.5 | -12.4 | 21 | 1.8 | 26 | 7 | 0 | 10 | 0 | 4 | 0 | 0 | 0 | 4.2 | 76 | 24 | 21 | |
| 上旬 | 0.4 | 4.2 | 10.0 | 09 | 0.4 | 03 | -4.5 | -8.9 | 09 | -0.2 | 01 | 6 | 0 | 10 | 0 | 0 | 0 | 0 | 0 | 4.9 | 76 | 37 | 09* | |
| 中旬 | 6.0 | 10.3 | 14.4 | 19 | 4.1 | 15 | 0.7 | -3.0 | 11 | 6.4 | 12 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 7.8 | 83 | 32 | 16 | |
| 下旬 | 7.6 | 15.2 | 22.2 | 25 | 5.0 | 28 | 1.2 | -3.4 | 21 | 5.1 | 26 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 7.3 | 71 | 25 | 21 | |
| 上旬 | 8.6 | 13.5 | 16.4 | 01 | 9.0 | 05 | 4.0 | 1.3 | 07 | 7.2 | 01 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.5 | 77 | 17 | 02 | |
| 中旬 | 8.6 | 13.9 | 15.7 | 18 | 12.1 | 11 | 3.2 | -0.4 | 16 | 9.2 | 20 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 8.5 | 76 | 30 | 15 | |
| 下旬 | 13.0 | 18.9 | 25.2 | 22 | 13.8 | 27 | 7.8 | 5.5 | 22 | 10.3 | 27 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 11.2 | 77 | 26 | 22 | |
| 上旬 | 14.4 | 20.4 | 26.5 | 01 | 13.1 | 07 | 8.7 | 6.8 | 06 | 10.8 | 03 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 12.5 | 79 | 11 | 01 | |
| 中旬 | 16.8 | 22.9 | 27.2 | 14 | 19.8 | 18 | 10.8 | 7.8 | 12 | 16.2 | 14 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 14.3 | 75 | 40 | 12 | |
| 下旬 | 16.9 | 22.0 | 26.5 | 28 | 16.3 | 25 | 12.6 | 9.5 | 21 | 16.1 | 28 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 15.4 | 81 | 35 | 23 | |
| 上旬 | 17.6 | 23.3 | 26.1 | 10 | 19.4 | 01 | 13.3 | 8.0 | 10 | 16.0 | 03 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 16.5 | 82 | 43 | 10 | |
| 中旬 | 21.5 | 26.5 | 29.7 | 11 | 23.5 | 19 | 17.6 | 12.3 | 11 | 19.7 | 14 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 22.4 | 88 | 45 | 11 | |
| 下旬 | 23.2 | 26.5 | 30.1 | 27 | 24.4 | 30 | 20.7 | 17.6 | 21 | 22.1 | 31 | 0 | 1 | 0 | 0 | 0 | 10 | 1 | 0 | 25.5 | 90 | 61 | 27 | |
| 上旬 | 24.7 | 30.1 | 34.4 | 08 | 23.5 | 02 | 20.2 | 19.1 | 02 | 22.0 | 01 | 0 | 6 | 0 | 0 | 0 | 9 | 7 | 0 | 26.2 | 85 | 45 | 04 | |
| 中旬 | 24.0 | 29.1 | 32.2 | 11 | 26.1 | 14 | 19.9 | 16.8 | 15 | 22.6 | 17* | 0 | 4 | 0 | 0 | 0 | 10 | 3 | 0 | 24.9 | 84 | 53 | 18 | |
| 下旬 | 20.8 | 25.5 | 28.0 | 22* | 21.3 | 31 | 16.8 | 12.9 | 27 | 22.7 | 21 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | 21.4 | 87 | 47 | 27 | |
| 上旬 | 20.5 | 25.4 | 28.9 | 06 | 22.4 | 02 | 15.5 | 9.9 | 03 | 19.1 | 08 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 20.9 | 87 | 59 | 06 | |
| 中旬 | 16.4 | 22.0 | 26.2 | 12 | 14.3 | 20 | 10.9 | 6.6 | 16 | 17.3 | 11 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 14.9 | 80 | 29 | 18 | |
| 下旬 | 15.7 | 20.9 | 26.1 | 25 | 17.2 | 22 | 9.9 | 5.9 | 22 | 16.1 | 24 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 14.7 | 81 | 31 | 28 | |
| 上旬 | 10.6 | 16.8 | 20.7 | 07 | 14.1 | 05 | 4.6 | -0.3 | 10 | 8.9 | 07 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 10.7 | 84 | 43 | 01 | |
| 中旬 | 8.8 | 14.2 | 19.0 | 11 | 4.5 | 17 | 2.3 | -0.6 | 15 | 6.8 | 12 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 9.8 | 83 | 50 | 18 | |
| 下旬 | 9.5 | 14.3 | 17.4 | 21 | 10.0 | 24 | 4.9 | 0.2 | 23 | 11.8 | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.8 | 81 | 47 | 21 | |
| 上旬 | 4.3 | 9.3 | 12.7 | 08 | 6.4 | 02 | 0.0 | -3.6 | 07 | 3.2 | 01 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 6.8 | 81 | 42 | 07 | |
| 中旬 | 3.5 | 6.6 | 11.7 | 12 | -0.8 | 17 | 0.3 | -3.4 | 17 | 9.1 | 12 | 1 | 0 | 6 | 0 | 1 | 0 | 0 | 0 | 6.4 | 79 | 41 | 19 | |
| 下旬 | 1.4 | 5.8 | 15.4 | 24 | -3.8 | 29 | -2.6 | -6.6 | 29 | 3.6 | 23 | 5 | 0 | 8 | 0 | 4 | 0 | 0 | 0 | 6.1 | 85 | 38 | 24 | |
| 上旬 | -1.7 | 1.2 | 5.4 | 10 | -2.0 | 03 | -5.2 | -10.3 | 06 | 0.7 | 10 | 8 | 0 | 9 | 0 | 4 | 0 | 0 | 0 | 4.5 | 81 | 45 | 10 | |
| 中旬 | -5.1 | -1.8 | 1.8 | 11 | -5.7 | 12 | -8.6 | -11.1 | 19 | -7.1 | 17* | 10 | 0 | 10 | 0 | 7 | 0 | 0 | 0 | 3.7 | 89 | 57 | 13 | |
| 下旬 | -3.2 | 0.6 | 4.1 | 28 | -2.3 | 22 | -7.5 | -15.0 | 21 | -0.5 | 28 | 9 | 0 | 11 | 0 | 4 | 0 | 0 | 0 | 4.5 | 90 | 61 | 26 | |