旬ごとの値
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森 1999年（旬ごとの値） 詳細（気温）
| 月 | 旬 | 気温(℃) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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） | |||||||||||
| 日平均 | 日最高 | 日最低 | 値 | 日 時:分 | 値 | 日 時:分 | ＜0℃ | ≧25℃ | ＜0℃ | ≧25℃ | ＜0℃ | ≧25℃ | ≧30℃ | ≧35℃ | |||
| 上旬 | -4.2 | -1.3 | -8.0 | 3.8 | 05 21:00 | -11.8 | 08 21:00 | 0 | 9 | 0 | 10 | 0 | 6 | 0 | 0 | 0 | |
| 中旬 | -1.1 | 1.9 | -4.7 | 6.2 | 19 14:00 | -8.1 | 17 24:00 | 0 | 7 | 0 | 10 | 0 | 2 | 0 | 0 | 0 | |
| 下旬 | -3.1 | 0.1 | -7.0 | 7.1 | 25 23:00 | -12.7 | 29 06:00 | 0 | 8 | 0 | 11 | 0 | 5 | 0 | 0 | 0 | |
| 上旬 | -4.2 | -0.9 | -7.8 | 1.4 | 08 04:00 | -12.8 | 03 03:00 | 0 | 10 | 0 | 10 | 0 | 7 | 0 | 0 | 0 | |
| 中旬 | -1.6 | 1.0 | -5.0 | 8.2 | 17 10:00 | -9.6 | 20 03:00 | 0 | 7 | 0 | 8 | 0 | 6 | 0 | 0 | 0 | |
| 下旬 | -1.2 | 2.2 | -4.8 | 7.0 | 27 11:00 | -9.5 | 21 03:00 | 0 | 5 | 0 | 8 | 0 | 2 | 0 | 0 | 0 | |
| 上旬 | -1.0 | 2.3 | -4.7 | 6.1 | 03 19:00 | -6.8 | 07 03:00 | 0 | 8 | 0 | 10 | 0 | 1 | 0 | 0 | 0 | |
| 中旬 | 0.9 | 4.0 | -2.6 | 9.7 | 18 19:00 | -9.0 | 11 23:00 | 0 | 4 | 0 | 7 | 0 | 2 | 0 | 0 | 0 | |
| 下旬 | 0.6 | 4.0 ) | -2.5 ) | 8.7 ) | 26 11:00 | -6.9 ) | 21 03:00 | 0 | 6 | 0 | 9 | 0 | 2 | 0 ) | 0 ) | 0 ) | |
| 上旬 | 2.9 | 6.4 | -1.3 | 11.7 | 09 13:00 | -3.5 | 09 04:00 | 0 | 1 | 0 | 9 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 6.4 | 9.9 | 3.0 | 12.7 | 16 10:00 | -0.6 | 18 05:00 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 8.5 | 13.4 | 3.8 | 17.7 | 23 14:00 | -0.1 | 21 03:00 | 22 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 10.5 | 14.8 | 7.2 | 17.9 | 01 13:00 | 4.2 | 10 24:00 | 57 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 10.1 | 13.5 | 6.1 | 16.3 | 20 06:00 | 4.0 | 16 04:00 | 47 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 13.9 | 18.2 | 10.6 | 23.5 | 23 15:00 | 8.4 | 25 05:00 | 153 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 14.3 | 18.1 | 11.0 | 22.1 | 10 13:00 | 9.1 | 01 04:00 | 143 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 18.7 | 23.0 | 14.3 | 28.1 | 15 15:00 | 10.8 | 11 02:00 | 187 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | |
| 下旬 | 16.3 | 19.3 | 13.8 | 22.9 | 23 15:00 | 12.1 | 22 04:00 | 163 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 16.5 | 19.6 | 13.7 | 21.9 | 04 15:00 | 9.5 | 10 04:00 | 165 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 19.1 | 22.0 | 17.2 | 24.3 | 17 15:00 | 13.7 | 11 03:00 | 191 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 24.7 | 27.6 | 22.3 | 33.0 | 27 14:00 | 17.2 | 21 05:00 | 272 | 0 | 3 | 0 | 0 | 0 | 11 | 2 | 0 | |
| 上旬 | 24.1 | 27.0 | 21.6 | 30.0 | 10 16:00 | 19.1 | 03 03:00 | 241 | 0 | 3 | 0 | 0 | 0 | 8 | 2 | 0 | |
| 中旬 | 24.2 | 27.5 | 21.2 | 31.5 | 17 13:00 | 17.8 | 15 04:00 | 242 | 0 | 1 | 0 | 0 | 0 | 10 | 1 | 0 | |
| 下旬 | 22.2 | 25.4 | 19.0 | 31.4 | 21 14:00 | 14.3 | 27 05:00 | 244 | 0 | 2 | 0 | 0 | 0 | 5 | 1 | 0 | |
| 上旬 | 22.4 | 26.0 | 18.7 | 28.5 | 09 14:00 | 16.2 | 03 04:00 | 224 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | |
| 中旬 | 19.0 | 23.2 | 14.9 | 28.1 | 12 12:00 | 12.3 | 16 05:00 | 190 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | |
| 下旬 | 18.3 | 21.4 | 14.3 | 25.1 | 25 04:00 | 11.5 | 29 06:00 | 183 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | |
| 上旬 | 13.4 | 17.6 | 9.5 | 19.9 | 08 11:00 | 7.0 | 09 05:00 | 134 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 11.3 | 15.5 | 6.2 | 20.3 | 11 23:00 | 2.2 | 18 03:00 | 81 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 11.3 | 15.2 | 7.2 | 18.4 | 26 14:00 | 4.7 | 23 08:00 | 80 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 7.2 | 10.9 | 3.7 | 14.2 | 05 13:00 | 2.2 | 10 04:00 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 6.0 | 9.3 | 2.7 | 13.5 | 12 12:00 | -1.0 | 17 07:00 | 12 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 4.7 | 8.2 | 1.0 | 17.1 | 24 11:00 | -4.7 | 29 07:00 | 36 | 3 | 0 | 5 | 0 | 2 | 0 | 0 | 0 | |
| 上旬 | 0.8 | 3.5 | -2.4 | 8.1 | 10 13:00 | -5.6 | 03 07:00 | 0 | 4 | 0 | 8 | 0 | 1 | 0 | 0 | 0 | |
| 中旬 | -2.4 | 0.8 | -5.5 | 7.6 | 11 01:00 | -7.3 | 12 08:00 | 0 | 9 | 0 | 10 | 0 | 3 | 0 | 0 | 0 | |
| 下旬 | 0.6 | 3.3 | -2.2 | 6.0 | 25 10:00 | -4.6 | 22 07:00 | 0 | 4 | 0 | 9 | 0 | 0 | 0 | 0 | 0 | |