That's normal. You can do something else for a bit or just do something simple like a hat just to keep your "finger in the pie" so to speak. That's what I do when I don't know what else to do for the time being.
When asking questions ALWAYS post the name and a link for the pattern if you have it.
I definitely knit a lot less when the weather is nice--partly because I lose interest in it and partly because I'm too busy doing other stuff. When the garden or the kayak or the tent or the hiking trail call, I'm gone!
Enjoy the nice weather in any way you can while you can. I'd be willing to bet that your buried knitting desire will burst forth once again come fall!