{"publishingOffice":"気象庁","editorialOffice":"気象庁本庁","datetime":"2026-09-18T04:42:48Z","headlineText":"","reportDatetime":"2026-09-18T14:00:00+09:00","targetDatetime":"2026-10-01T00:00:00+09:00","targetDuration":"P5M","metInfos":[{"duration":"P3M","termName":"冬（１２月から２月）","items":[{"type":"出現の可能性が最も大きい天候と、特徴のある気温、降水量等の確率","areaCode":"010000","areaName":"全国","feature":{"situation":"　北日本日本海側では、平年と同様に曇りや雪の日が多いでしょう。東日本日本海側では、平年と同様に曇りや雪または雨の日が多いでしょう。西日本日本海側では、平年に比べ曇りや雪または雨の日が多いでしょう。北・東・西日本太平洋側では、平年に比べ晴れの日が少ないでしょう。沖縄・奄美では、平年に比べ曇りや雨の日が多いでしょう。","elements":[{"kind":"気温","text":"平均気温は、北日本で平年並または高い確率ともに４０％、東・西日本で高い確率６０％、沖縄・奄美で高い確率７０％です。"},{"kind":"降水量","text":"降水量は、北日本太平洋側で平年並または多い確率ともに４０％、東日本太平洋側と西日本と沖縄・奄美で多い確率５０％です。"},{"kind":"降雪量","text":"降雪量は、北日本日本海側で平年並または少ない確率ともに４０％、東・西日本日本海側で少ない確率５０％です。"}]}},{"type":"地域・期間平均平年偏差各階級の確率","areaCode":"020100","areaName":"北日本","kind":"気温","below":"20","normal":"40","above":"40"},{"type":"地域・期間平均平年偏差各階級の確率","areaCode":"020200","areaName":"東日本","kind":"気温","below":"10","normal":"30","above":"60"},{"type":"地域・期間平均平年偏差各階級の確率","areaCode":"020300","areaName":"西日本","kind":"気温","below":"10","normal":"30","above":"60"},{"type":"地域・期間平均平年偏差各階級の確率","areaCode":"020400","areaName":"沖縄・奄美","kind":"気温","below":"10","normal":"20","above":"70"},{"type":"地域・期間平均平年偏差各階級の確率","areaCode":"020110","areaName":"北日本日本海側","kind":"降水量","below":"30","normal":"30","above":"40"},{"type":"地域・期間平均平年偏差各階級の確率","areaCode":"020120","areaName":"北日本太平洋側","kind":"降水量","below":"20","normal":"40","above":"40"},{"type":"地域・期間平均平年偏差各階級の確率","areaCode":"020210","areaName":"東日本日本海側","kind":"降水量","below":"30","normal":"30","above":"40"},{"type":"地域・期間平均平年偏差各階級の確率","areaCode":"020220","areaName":"東日本太平洋側","kind":"降水量","below":"20","normal":"30","above":"50"},{"type":"地域・期間平均平年偏差各階級の確率","areaCode":"020310","areaName":"西日本日本海側","kind":"降水量","below":"20","normal":"30","above":"50"},{"type":"地域・期間平均平年偏差各階級の確率","areaCode":"020320","areaName":"西日本太平洋側","kind":"降水量","below":"20","normal":"30","above":"50"},{"type":"地域・期間平均平年偏差各階級の確率","areaCode":"020400","areaName":"沖縄・奄美","kind":"降水量","below":"20","normal":"30","above":"50"},{"type":"地域・期間平均平年偏差各階級の確率","areaCode":"020110","areaName":"北日本日本海側","kind":"降雪量","below":"40","normal":"40","above":"20"},{"type":"地域・期間平均平年偏差各階級の確率","areaCode":"020210","areaName":"東日本日本海側","kind":"降雪量","below":"50","normal":"30","above":"20"},{"type":"地域・期間平均平年偏差各階級の確率","areaCode":"020311","areaName":"西日本日本海側（九州北部地方を除く）","kind":"降雪量","below":"50","normal":"30","above":"20"}]}],"additionalInfos":[{"target":"１か月予報","text":"１か月予報：毎週木曜日　１４時３０分　次回は９月２４日","datetime":"2026-09-24T14:30:00+09:00"},{"target":"３か月予報","text":"３か月予報：１０月２０日（火）　１４時","datetime":"2026-10-20T14:00:00+09:00"}],"notice":"　寒候期予報については、１０月の３か月予報［１０月２０日発表予定］に合わせて予報内容を再検討し、変更がある場合には修正発表します。１１月の３か月予報発表以降、冬の予報については、最新の３か月予報等をご利用ください。","additionalNotice":"　１１月までの予報については、最新の３か月予報等をご覧ください。"}