As mentioned, you won't be below freezing long enough to probably be an issue. In fact, those nighttime lows on Monday may not cause any freezing at all.
But, blowing out the lines is easy and quick if you feel the need or just want to make certain there is no damage.
Keep in mind that its not the freezing per se that causes problems but the expansion of the frozen water in your lines. Enough expansion will cause pipes, fittings and your water filter housing to burst. In my experience, if your lines are PEX, than the little expansion you might get can be alleviated if you leave all your faucets open (pump off, of course).
No need to worry about your tanks at all. The expansion will cause no damage in such a large area.
DW, 3 Kids and our Goldens
2012 Shamrock 233S
2008 Toyota Sequoia 5.7L 4WD