Milwaukee Weather: Calm morning, heavy rain overnight

Published September 18, 2026 5:15 AM CDT

Forecast from FOX6 Meteorologist Holly Baker

A flood watch is in effect from 1AM  to 1PM. Rain showers will be consistent through the afternoon into the evening.
A heavier batch of rain and storms will arrive overnight into early Saturday. Flash flooding will be the biggest threat during this time.
Sunday and Monday stay unsettled with occasional showers, although rainfall should generally be lighter and thunder looks limited. We begin drying out Tuesday as high pressure takes control, setting up a mainly dry stretch through Thursday
It will also feel noticeably cooler next week, with highs generally in the 60s and lows around 50.

Tonight:  Heavy rain.
Low:      59°
Wind:     E 10-15

Saturday: Rain and thunderstorms likely. Heavy rain and localized flooding possible.
High:     67°
Wind:     SE/NE 10-20

Sunday:   Chance of showers. Cool and breezy.
AM Low:   59°                   High:  66°
Wind:     NE 10-20

Monday:   Chance of showers. Cool and breezy.
AM Low:   56°                   High:  63°
Wind:     ENE 10-20

Tuesday:  Partly sunny.
AM Low:   51°                   High:  62°
Wind:     NE 10-20

Wednesday: Partly sunny.
AM Low:   53°                   High:  64°
Wind:     NE 5-10

Thursday: Partly sunny.
AM Low:   55°                   High:  68°
Wind:     NE 5-10

6-day planner

FOX6 Weather Extras

Local perspective:

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School and business closings

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The Source: Information in this report is from the FOX6 Weather Experts and National Weather Service.

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