I see the communion with relatives as more of a expression of religion, and I'm curious about the controlling weather part. But the part about spells and ritualized magic being the domain of women is true, both to heal and to curse. There were men who did magic, but they're shamed by their society as argr, dishonorable and unmanly, and even Odin himself is shamed like this because he uses it to see his visions, while his wife Freya is hailed for it. Magic is widely considered a very gendered concept in Norse society by many scholars.