月ごとの値
 |  |
 |  |
 |  |  |  |  |  |  |
 |  |  |  |  |  |
 |  |  |  |  |
飯田（長野県) 1991年（月ごとの値） 詳細（日照・雪・その他）
| 月 | 日照時間(h) | 全天日射量 (MJ/㎡) | 雪(cm) | 雲量 | 大気現象 | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 合計 | 日照率 | 各階級の日数 | 降雪 | 各階級の日数（降雪） | 最深積雪 | 各階級の日数（最深積雪） | 平均 | 各階級の日数 | 雪日数 | 霧日数 | 雷日数 | ||||||||||||||||||
| 不照 | 日照率 ≧40% | 平均 | 合計 | 日合計の最大 | ≧3cm | ≧5cm | ≧10cm | ≧20cm | ≧50cm | ≧100cm | 値 | 日 | ≧0cm | ≧1cm | ≧5cm | ≧10cm | ≧20cm | ≧50cm | ≧100cm | ＜1.5 | ≧8.5 | ||||||||
| 値 | 日 | ||||||||||||||||||||||||||||
| 183.5 | 59 | 2 | 23 | 19 | 10 | 04 | 3 | 1 | 1 | 0 | 0 | 0 | 9 | 04 | 11 | 7 | 2 | 0 | 0 | 0 | 0 | 4.3 | 7 | 3 | 14 | 3 | 0 | ||
| 152.1 | 50 | 2 | 17 | 15 | 6 | 19 | 3 | 2 | 0 | 0 | 0 | 0 | 6 | 23* | 6 | 5 | 3 | 0 | 0 | 0 | 0 | 5.4 | 3 | 6 | 15 | 2 | 1 | ||
| 158.8 | 43 | 10 | 16 | 0 | 0 | 16* | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.3 | 4 | 11 | 2 | 6 | 0 | |||
| 181.8 | 47 | 2 | 17 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.3 | 2 | 11 | 0 | 6 | 0 | ||||
| 186.7 | 43 | 4 | 20 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.8 | 1 | 8 | 0 | 3 | 0 | ||||
| 135.0 | 31 | 7 | 12 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.2 | 0 | 17 | 0 | 0 | 5 | ||||
| 132.8 | 30 | 1 | 11 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.2 | 0 | 17 | 0 | 1 | 6 | ||||
| 202.4 | 49 | 0 | 21 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.9 | 0 | 11 | 0 | 0 | 0 | ||||
| 144.8 | 39 | 7 | 16 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.0 | 1 | 12 | 0 | 4 | 1 | ||||
| 105.9 | 30 | 8 | 12 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.4 | 1 | 17 | 0 | 9 | 0 | ||||
| 150.6 | 49 | 3 | 20 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.5 | 5 | 5 | 0 | 16 | 1 | ||||
| 131.4 | 43 | 6 | 20 | 30 | 18 | 27 | 2 | 2 | 2 | 0 | 0 | 0 | 22 | 27 | 6 | 6 | 6 | 6 | 1 | 0 | 0 | 5.0 | 4 | 7 | 6 | 15 | 0 | ||