FrostList

Winter Prep Checklist for Littleton, CO

Here's the order to prep Littleton, CO for winter, set by local freeze data. Your first deadline is September 15 — prevent ice dams — and the sequence runs through the cold season into spring below.

Your winter prep order for Littleton

  1. SeptemberSeptember 15 — Prevent Ice DamsSee details →
  2. SeptemberSeptember 24 — Prep Your Snow BlowerSee details →
  3. SeptemberSeptember 27 — Prevent Frozen PipesSee details →
  4. OctoberOctober 11 — Winterize SprinklersSee details →
  5. OctoberOctober 11 — Winterize Your RVSee details →
  6. OctoberOctober 11 — Store Your MotorcycleSee details →
  7. OctoberOctober 14 — Winterize Your BoatSee details →
  8. OctoberOctober 21 — Test Your Car BatterySee details →
  9. MayMay 2 — Test Your Sump PumpSee details →

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

How the order is set

Each task is pinned to Littleton'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 Marston Fltr Plt, live outlook by Open-Meteo. Sources · Methodology. Last updated: July 11, 2026.