For heat lovers like peppers, if you have any wall-o-waters that will still fit over the plants, it'd be worth putting them on if you can do so without smooshing the plant.
If you are more ambitious you can knock together a sort of topless greenhouse out of old storm windows and/or old glass doors and/or transparent plastic Palruf panels from home depot; the idea is to make glass 'walls' around the pepper patch, to heat them up more during the day and help hold a little heat at night. If it is a sunny day, leave the top open, otherwise (and at night) you can throw something light and somewhat permeable, like a floating row cover, over the assembly for a bit more warmth. (You may need some sort of props to keep it from squishing the plants, depending on the size of your pepper patch).
I've got one jalapeno fair-sized and a bunch more just starting to set, but my peppers are in pots on the front deck in a serious 'heat trap' created by the s-facing front of the house and the garage wall to the W. *One* tomato (in garden) has turned orange, I am hoping it may be edible in a week or so.
Good luck, have fun, try planting a bunch more lettuce (either that will cause this longtermweather pattern to break, which will help with the peppers and tomatoes and corn, or if not then you'll get a great second crop out of this very lettuce-friendly weather
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Pat
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