Jack W wrote:

Yesterday with air temp of 9 degrees F and 15-25 mph breeze, my worn
out 64-year-old ass tried to replace the shingles that were torn off.
At the very least, the underlayment is covered. In several places, I
had to simply nail shingles and so the roofing nail heads are exposed.
About an inch of snow overnight wth freezing rain later, and then an
1" of regular rain tomorrow.

Yeah, it's a no-no to have roofing nail heads exposed but is there
some type of adhesive that can be used this time of year to cover up
nail heads, or must I wait until a 50 degree F day comes along?

PS- Roofer appt. Thursday.

It shouldn't be a problem if the roofer will be fixing it soon.
Otherwise, the asphalt tar type roof sealant will work if you bring
along a torch to warm up the area before application and keep it warm
for a minute for the sealant to flow. The trigger start torches are a
big help for this type of work.