"почему-то" meaning in Russian

{
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "почему́",
        "3": "-то"
      },
      "expansion": "почему́ (počemú) + -то (-to)",
      "name": "af"
    }
  ],
  "etymology_text": "From почему́ (počemú) + -то (-to).",
  "forms": [
    {
      "form": "почему́ -то",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "počemú-to",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "почему́-то"
      },
      "expansion": "почему́-то • (počemú-to)",
      "name": "ru-adv"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian terms suffixed with -то",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "No wife?’ Pilate asked with anguish for some reason, not understanding what was happening to him.",
          "ref": "1973, Михаил Булгаков, “Глава II. Понтий Пилат”, in Мастер и Маргарита; English translation from Richard Pevear and Larissa Volokhonsky, transl., Master and Margarita, London: Penguin Books, 1997:",
          "roman": "Ženy net? — počemu-to tosklivo sprosil Pilat, ne ponimaja, što s nim proisxodit.",
          "text": "Жены нет? — почему-то тоскливо спросил Пилат, не понимая, что с ним происходит.",
          "type": "quote"
        }
      ],
      "glosses": [
        "for some reason, somewhy"
      ],
      "id": "en-почему-то-ru-adv-qMxK-u6C",
      "links": [
        [
          "for some reason",
          "for some reason"
        ],
        [
          "somewhy",
          "somewhy"
        ]
      ],
      "related": [
        {
          "roman": "počemú",
          "word": "почему́"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[pət͡ɕɪˈmu‿tə]"
    },
    {
      "audio": "Ru-почему-то.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/0/0d/Ru-%D0%BF%D0%BE%D1%87%D0%B5%D0%BC%D1%83-%D1%82%D0%BE.ogg/Ru-%D0%BF%D0%BE%D1%87%D0%B5%D0%BC%D1%83-%D1%82%D0%BE.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/0/0d/Ru-%D0%BF%D0%BE%D1%87%D0%B5%D0%BC%D1%83-%D1%82%D0%BE.ogg"
    }
  ],
  "word": "почему-то"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "почему́",
        "3": "-то"
      },
      "expansion": "почему́ (počemú) + -то (-to)",
      "name": "af"
    }
  ],
  "etymology_text": "From почему́ (počemú) + -то (-to).",
  "forms": [
    {
      "form": "почему́ -то",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "počemú-to",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "почему́-то"
      },
      "expansion": "почему́-то • (počemú-to)",
      "name": "ru-adv"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "adv",
  "related": [
    {
      "roman": "počemú",
      "word": "почему́"
    }
  ],
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Russian adverbs",
        "Russian entries with incorrect language header",
        "Russian lemmas",
        "Russian multiword terms",
        "Russian terms suffixed with -то",
        "Russian terms with IPA pronunciation",
        "Russian terms with quotations"
      ],
      "examples": [
        {
          "english": "No wife?’ Pilate asked with anguish for some reason, not understanding what was happening to him.",
          "ref": "1973, Михаил Булгаков, “Глава II. Понтий Пилат”, in Мастер и Маргарита; English translation from Richard Pevear and Larissa Volokhonsky, transl., Master and Margarita, London: Penguin Books, 1997:",
          "roman": "Ženy net? — počemu-to tosklivo sprosil Pilat, ne ponimaja, što s nim proisxodit.",
          "text": "Жены нет? — почему-то тоскливо спросил Пилат, не понимая, что с ним происходит.",
          "type": "quote"
        }
      ],
      "glosses": [
        "for some reason, somewhy"
      ],
      "links": [
        [
          "for some reason",
          "for some reason"
        ],
        [
          "somewhy",
          "somewhy"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[pət͡ɕɪˈmu‿tə]"
    },
    {
      "audio": "Ru-почему-то.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/0/0d/Ru-%D0%BF%D0%BE%D1%87%D0%B5%D0%BC%D1%83-%D1%82%D0%BE.ogg/Ru-%D0%BF%D0%BE%D1%87%D0%B5%D0%BC%D1%83-%D1%82%D0%BE.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/0/0d/Ru-%D0%BF%D0%BE%D1%87%D0%B5%D0%BC%D1%83-%D1%82%D0%BE.ogg"
    }
  ],
  "word": "почему-то"
}