PoolWindow

Pool season · Washington

Everett Pool Season: the Year on One Bar

Last updated: July 15, 2026 · dates · water temp

One bar, one year, one Everett pool. The season bar below draws everything the model knows — opening window, prime season, closing window — against today's date, with the working details one click away on the opening and closing pages.

J F M A M J J A S O N D today (build date)

off-season opening window swim season closing window

The bar compresses Everett's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the May 28–June 18 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends September 21. Wherever the today marker sits, the nearest color change is your next appointment.

The Everett pool calendar

June 4open by
September 21close by
080°F+ days
66°Fwater peak

Opening — target June 4

Target June 4; the practical window runs May 28–June 18, and the 7-day mean crosses the 61°F threshold around June 18. Cold-water starts are the cheap ones.

Full opening guide

Closing — deadline September 21

The window opens September 11 once water leaves the algae zone; the model deadline is September 21, a week ahead of the November 2 freeze normal.

Full closing guide

Where the water sits today

SEASONAL VIEW

Estimated unheated pool water temp (site model, ±5°F). The live estimate loads in your browser from Open-Meteo air temperatures; in a typical year Everett water runs about 40°F at its winter floor and 66°F at its summer peak.

40 45 50 55 60 65 70 75 80 85 58 open 65 algae

Estimated water temperature by month

This is Everett's typical-year water curve: the same EWMA model as the live widget, run on the 1991–2020 normals instead of this week's weather.

Site-model seasonal water estimates for an unheated in-ground pool near Everett — ±5°F, see methodology.
JanFebMarAprMayJunJulAugSepOctNovDec
41°42°44°48°54°59°63°66°63°56°48°42°

The curve peaks near 66°F — comfortable-water months here usually involve a heater or a solar cover.

Data: NOAA 1991–2020 climate normals via Everett (2.1 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.