Looks like the first decent frost of the season, at least for the center of Eureka. I thought we might have had a good one a couple days ago from the feel of it. I can usually tell if it's frosty outside just from how it feels inside the house. Was only a spotty frost the other day, though.
The main way I tell if it's frosty, for sure, is looking out the front window of the house at my truck. Frost shows up well, even in the dark, on my truck. If I don't see frost on the truck, then I have to wait until daybreak so I can look at the roofs of neighboring houses. There's one house just a couple spaces to the northeast behind ours that will have frost on it even if no one else's does.
I believe that house is Jaime's house. She was a local maintenance gardener for a while. For some reason her roof will be the first [and last] one to hold frost on it. That's usually the first place to look if my truck doesn't show any.
Like I said, I can usually get an idea if it's cold enough for frost just by how it feels inside the house. One thing I check is my pillow. When I'm laying in bed, even though I might not feel that cold, I can sense the air is cold. I reach over and touch the pillow next to my head. If it feels noticeably cold, it's cold and likely frosty.
Funny thing about frosty mornings, though, is I seem to feel warmer than some non- frosty mornings. I've been trying to figure out for years why that is. I'd like to think it's because it's not as damp. I've theorized for some time that most of the moisture in the air freezes and turns to frost and, since it's not so damp with water taken out of the air, I feel warmer.
That makes sense to me, except I'm not sure it's true because checking the humidity shows the air being more humid than on some foggy, damp days. I checked again this morning and, at 32 degrees, it was at 100% humidity according to weather.com.
It could be because of the way they determine humidity and maybe temperature skews the results as far as what I'm looking for. Took a meteorology class at C/R years ago and we learned a bit about that but I don't remember anything in regards temperature vs. humidity. I'm sure there's something going on along that line, though, otherwise how could I feel so much warmer even though the humidity is so high.
Oh well, plenty of time to think about that. One thing I like about frost is it gives me an excuse to take my time getting going in the morning. After all, can't mow frosted lawns.
I love having an excuse.