Reddit reviews Weather Whys: Facts, Myths, and Oddities

Since she's into weather, maybe she'd like this book, Weather Whys: Facts, Myths, and Oddities - it's very interesting and humorous.

For the other stuff, well, she's a shoe-in for the things we have on our website, like the book Cooking for Geeks, really great for the how and whys of cooking, a Mini Cupcake Makers that does exactly what you'd expect it to do or -giggle- 50 Shades of Chicken, my personal favorite as it's absolutely hilarious and, surprisingly, useful.

Since she's outdoorsy, maybe she'd like a Picnic Backpack with Blanket with all the stuff you 2 would need when going on a picnic.

Actually, that would be nice to do without the backpack, you could invite her to a picnic for her birthday (plus presents), I bet she'd love it if she's an outdoorsy person.