FrostList

Winter Prep Checklist for New Berlin, WI

Here's the order to prep New Berlin, WI for winter, set by local freeze data. Your first deadline is September 30 — prevent frozen pipes — and the sequence runs through the cold season into spring below.

Your winter prep order for New Berlin

  1. SeptemberSeptember 30 — Prevent Frozen PipesSee details →
  2. OctoberOctober 14 — Winterize SprinklersSee details →
  3. OctoberOctober 14 — Winterize Your RVSee details →
  4. OctoberOctober 14 — Store Your MotorcycleSee details →
  5. OctoberOctober 16 — Prevent Ice DamsSee details →
  6. OctoberOctober 17 — Winterize Your BoatSee details →
  7. OctoberOctober 24 — Test Your Car BatterySee details →
  8. OctoberOctober 25 — Prep Your Snow BlowerSee details →
  9. MayMay 3 — Test Your Sump PumpSee details →

Dates are local deadlines derived from NOAA 1991–2020 freeze and snowfall normals for New Berlin. Live outlooks on each linked page can move the urgency earlier.

How the order is set

Each task is pinned to New Berlin's own NOAA 1991–2020 freeze and snowfall normals, then ordered by its local deadline. Sprinklers, RVs, and boats key off the first 28°F freeze; pipes and motorcycles off the first freezing night; snow blowers and roofs off the first plowable snow. Follow any link for the live outlook and a checklist.

Data: NOAA 1991–2020 normals via Hales Corners/Whitnall Park/Bo, live outlook by Open-Meteo. Sources · Methodology. Last updated: July 11, 2026.