It tends to rain just a bit up here in the rainforest country, and we average
75-100" per year. If you want to do pretty much anything outside on a regular
basis, then getting wet goes right along with it.
You didn't say where you were heading (high or low country), but planning for
it in advance as you are doing will certainly make for a more comfortable trip.
If in cold country, you can dress in layers and adjust accordingly, and add a
light raincoat to your pack that goes over the top of it. This way you're prepared
for whatever weather comes along, and if you're working in a river with hip
or chest waders on, the lightweight raincoat will keep you comfortable
and somewhat dry, and I use a Boonie style hat that has been treated with
a rainproof, breathable sealer (keeps the water from running down your neck.
...most of the time..lol).
If it's warm out and you're in shorts and a t-shirt, be sure to pack dry clothes
along so you can get dry before heading home. If camping, make sure your fire-
starting tools/lighter, etc are stored in a waterproof container, as having that
fire to warm up by will be very important.
This time of year the temps drop quick after sundown, especially out in the deserts,
and
Hypothermia can come sneaking in damn quickly if you're out in wet/cold
and are wet/cold yourself! If no dry clothes, and you've still got to hike out to your truck I
suggest not waiting til' dark to go, as once those temps drop you'll be colderanhell
in a NY second if you don't keep moving.
An old trapping buddy of mine used to say "Welllll , you can only get so wet, and after
that it doesn't really matter".
So go have fun, be careful and if you're prepared and it rains? So what...