旬ごとの値
 |  |
 |  |
 |  |  |  |  |
 |  |  |  |  |  |
 |  |  |  |
初山別（留萌地方) 2004年（旬ごとの値） 詳細（気温・蒸気圧・湿度）
| 月 | 旬 | 気温 | 蒸気圧 | 湿度 | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 平均 | 最高 | 最低 | 積算 (℃) |
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 (hPa) |
平均 (％) |
最小 | ||||||||||||
| 日平均 (℃) | 日最高 (℃) | 日最低 (℃) |
気温 (℃) | 日 時:分 | 気温 (℃) | 日 時:分 | ＜0℃ | ≧25℃ | ＜0℃ | ≧25℃ | ＜0℃ | ≧25℃ | ≧30℃ | ≧35℃ | 湿度 (％) | 日 | |||||
| 上旬 | -3.5 | -1.0 | -7.0 | 0.9 | 10 18:30 | -12.7 | 09 02:10 | 0 | 10 | 0 | 10 | 0 | 6 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 中旬 | -3.6 | -0.4 | -7.8 | 3.8 | 13 13:20 | -12.6 | 17 07:30 | 0 | 9 | 0 | 10 | 0 | 6 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 下旬 | -4.3 | -1.1 | -9.2 | 3.5 | 22 04:10 | -17.8 | 25 07:30 | 0 | 9 | 0 | 11 | 0 | 9 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 上旬 | -4.7 | -1.1 | -9.9 | 0.9 | 03 11:30 | -16.8 | 02 07:20 | 0 | 10 | 0 | 10 | 0 | 8 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 中旬 | -2.3 | 1.1 | -6.5 | 5.0 | 14 22:50 | -14.3 | 18 07:10 | 0 | 7 | 0 | 10 | 0 | 4 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 下旬 | -2.0 | 1.4 | -6.1 | 4.5 | 26 11:10 | -11.0 | 23 21:20 | 0 | 8 | 0 | 9 | 0 | 2 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 上旬 | -3.9 | -0.7 | -9.9 | 8.7 | 10 23:40 | -16.1 | 06 03:40 | 0 | 9 | 0 | 10 | 0 | 7 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 中旬 | 0.4 | 3.4 | -2.4 | 11.0 | 17 11:20 | -5.8 | 20 24:00 | 0 | 6 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 下旬 | 2.8 | 6.5 | -1.8 | 10.0 | 29 13:30 | -6.9 | 21 04:10 | 0 | 1 | 0 | 7 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 上旬 | 2.8 | 5.6 | -0.8 | 8.9 | 06 11:40 | -5.5 | 03 05:10 | 0 | 1 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 中旬 | 5.6 | 9.6 | 0.8 | 15.5 | 19 12:50 | -2.8 | 11 02:00 | 11 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 下旬 | 4.8 | 8.3 | -0.5 | 12.9 | 29 15:20 | -2.7 | 24 01:10 | 0 | 0 | 0 | 9 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 上旬 | 9.8 | 14.6 | 4.5 | 22.4 | 09 13:30 | -2.0 | 01 00:40 | 43 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 中旬 | 12.9 | 16.5 | 8.8 | 24.5 | 20 12:50 | 7.3 | 19 04:10 | 129 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 下旬 | 13.4 | 17.1 | 9.6 | 22.9 | 28 08:30 | 5.7 | 23 04:20 | 147 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 上旬 | 14.0 | 18.3 | 8.6 | 21.0 | 04 08:40 | 6.0 | 08 04:40 | 140 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 中旬 | 15.6 | 19.6 | 10.9 | 24.3 | 18 13:00 | 4.9 | 16 03:00 | 156 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 下旬 | 16.9 | 19.7 | 13.5 | 24.8 | 21 15:20 | 10.5 | 25 00:40 | 169 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 上旬 | 16.8 | 19.9 | 13.5 | 23.7 | 09 14:40 | 9.9 | 05 04:20 | 168 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 中旬 | 18.1 | 21.8 | 14.4 | 26.0 | 20 08:20 | 7.1 | 12 04:20 | 181 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | /// | /// | /// | /// | |
| 下旬 | 21.4 | 24.9 | 17.8 | 29.8 | 24 13:10 | 9.9 | 22 03:10 | 235 | 0 | 1 | 0 | 0 | 0 | 5 | 0 | 0 | /// | /// | /// | /// | |
| 上旬 | 22.9 | 25.8 | 20.4 | 28.6 | 03 12:40 | 17.6 | 10 23:40 | 229 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | /// | /// | /// | /// | |
| 中旬 | 18.4 | 22.7 | 14.6 | 24.3 | 18 14:50 | 11.3 | 20 24:00 | 184 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 下旬 | 17.4 | 22.2 | 12.0 | 24.4 | 24 10:00 | 7.7 | 28 03:00 | 192 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 上旬 | 19.0 | 22.9 | 15.0 | 28.2 | 08 09:00 | 11.6 | 10 23:50 | 190 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | /// | /// | /// | /// | |
| 中旬 | 16.3 | 20.7 | 11.4 | 23.1 | 16 12:00 | 5.1 | 15 05:10 | 163 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 下旬 | 15.2 | 19.4 | 10.0 | 20.8 | 29 10:00 | 6.6 | 30 24:00 | 152 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 上旬 | 13.4 | 18.2 | 8.1 | 20.9 | 09 11:20 | 4.8 | 04 05:40 | 125 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 中旬 | 12.7 | 16.5 | 8.4 | 20.5 | 12 10:00 | 4.4 | 17 23:30 | 109 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 下旬 | 7.8 | 11.6 | 3.7 | 16.2 | 31 13:00 | 0.7 | 27 02:40 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 上旬 | 8.6 | 12.3 | 4.4 | 17.1 | 06 13:40 | 1.4 | 10 04:10 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 中旬 | 7.2 | 10.2 | 3.7 | 18.3 | 11 14:00 | 0.0 | 16 13:00 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 下旬 | 4.3 | 7.0 | 0.8 | 12.8 | 23 12:20 | -6.8 | 29 20:40 | 11 | 3 | 0 | 4 | 0 | 2 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 上旬 | 2.0 | 4.7 | -0.8 | 9.1 | 03 15:50 | -3.9 | 08 18:50 | 0 | 3 | 0 | 7 | 0 | 0 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 中旬 | -2.0 | 1.4 | -5.1 | 4.5 | 20 18:20 | -9.2 | 20 01:30 | 0 | 9 | 0 | 10 | 0 | 2 | 0 | 0 | 0 | /// | /// | /// | /// | |
| 下旬 | -3.6 | -1.1 | -6.7 | 2.4 | 23 04:40 | -11.9 | 30 05:00 | 0 | 11 | 0 | 11 | 0 | 6 | 0 | 0 | 0 | /// | /// | /// | /// | |
- 値欄の記号の説明
- 2021年3月2日より、アメダスの日照時間は「推計気象分布（日照時間）」から得る推計値となりましたので、日照計による観測値と単純比較できません。詳しくは要素ごとの値の補足説明をご覧ください。