Pool season · California
Menifee Pool Season: the Year on One Bar
Last updated: July 25, 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.
Menifee, CA — 173 swim days a yearReading 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
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.
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.
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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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.
Every station tells its own story: compare this curve with Manteca's pool season and Merced's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the California season index.
Menifee pool season FAQ
When should I open my pool in Menifee, CA?
Open by March 20 — the model places Menifee's 61°F crossing about two weeks later, and every warm day you wait pushes the water toward the 65°F algae zone. The Menifee opening guide has the 12-step sequence.
When should I close my pool in Menifee?
Close by November 21: cool water keeps its winter chemistry, but freeze damage is the hard stop. The Menifee closing guide sequences the work backward from that date.
How long is the swim season in Menifee?
Menifee averages 173 days a year with normal highs of 80°F or better — about 12 days earlier than the California median. The California season index ranks all 147 covered cities by the same metric.
How warm does pool water get in Menifee?
An unheated pool near Menifee typically peaks around 82°F in high summer and bottoms out near 52°F in winter, spending roughly 2 months at or above the 78°F comfort line most swimmers prefer. The month-by-month curve above shows the whole cycle; the methodology page explains the ±5°F error bars.
Email me when Menifee hits the closing window
Data: NOAA 1991–2020 climate normals via Elsinore (9.3 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.