Marine Weather and Tide Forecast for Delwood, WI

DISCUSSION
Issued at 1157 AM CDT Sat Oct 17 2026

Tonight

With the loss of diurnal mixing tonight, the wind gusts will gradually decline this evening and overnight. Even with that the sustained winds will remain in the 10 to 20 mph range. The combination of warm air advection and the low-levels remaining well-mixed, low temperatures will be warmer tonight. They will range from the lower 30s to lower 40s.

Sunday

As the day warms on Sunday morning, southerly wind gusts will increase into the 25 to 35 mph range. In addition, this will mix down warmer air from aloft to the surface. With the NBM running on the cool side, used a mix of 1/3rd NBM and 2/3rds NBM 90th percentile to raise these temperatures up anywhere from 2 to 4F.
High temperatures on Sunday will be in the lower and mid-60s.

Next Week

A 500 mb ridge will gradually build north into the region early next week and then remain in control of the area through the week. High temperatures will be mainly in the 60s through Wednesday and then range from the upper 60s to mid-70s for the remainder of the week. Low temperatures will be in the 30s and 40s through Monday night, 40s Tuesday night, and in the 40s and 50s for the remainder of the week.

AVIATION /18Z TAFS THROUGH 18Z SUNDAY/
Issued at 1157 AM CDT Sat Oct 17 2026

Skies will remain clear into Sunday. The wind gusts will be in the 15 to 30 knot range this afternoon. The wind gusts will then decline tonight with the loss of diurnal heating. On Sunday morning, the gustiness will return as diurnal mixing develops.
Wind gusts will be in the 15 to 30 knot range. The wind direction will be from the southwest this afternoon and then south late tonight and on Sunday morning.

ARX WATCHES/WARNINGS/ADVISORIES
WI...None.
MN...None.
IA...None.