You need a soil thermometer. Soil temps can vary all over your garden, depending upon...so many factors!
Just try the soil thermometer. I have had mine for at least 10 years and it’s much more accurate then trying to gauge temps by a ‘guestimate’ on daytime and nighttime temps.
Ten bucks on Amazon. You’ll have it in a few days. You will never go back when it comes to planting your green beans. And I can guarantee that you’ll have great germination and more green beans than you’ll know what to do with! :)
OK- do I measure the temp during the night, when it would be lowest?
I didn’t realize temperatures could change throughout the garden. Interesting. I was going to get one anyway because my last one broke. I mainly used it for moisture and I was wondering what those other gauges were for, lol