PoolWindow

Pool season · California

Menifee Pool Season: the Year on One Bar

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

This is the one-page view of Menifee's pool year: both model windows, the estimated water-temperature curve, and today's live position on the season bar. The detailed checklists live on the opening and closing guides; this page is the calendar you check between them.

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

off-season opening window swim season closing window

Reading it takes ten seconds: 52 dots, one per week. Solid teal is Menifee's swim season; the hollow teal run before it (March 13 to April 3) is when to open; the hollow amber run after is when to close, with November 21 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.

The Menifee pool calendar

March 20open by
November 21close by
17380°F+ days
82°Fwater peak

Opening — target March 20

Target March 20; the practical window runs March 13–April 3, and the 7-day mean crosses the 61°F threshold around April 3. Cold-water starts are the cheap ones.

Full opening guide

Closing — deadline November 21

The window opens November 11 once water leaves the algae zone; the model deadline is November 21, a week ahead of the December 18 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 Menifee water runs about 52°F at its winter floor and 82°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 Menifee'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 Elsinore — ±5°F, see methodology.
JanFebMarAprMayJunJulAugSepOctNovDec
53°54°57°61°65°71°78°81°80°73°64°55°

Warmest water typically July–September (peaking near 82°F); heaters and covers shift any month up.

Data: NOAA 1991–2020 climate normals via Elsinore (9.3 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.