Pool season · Texas
North Richland Hills Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
North Richland Hills's whole pool calendar, condensed: when the water warms, when it cools, and where today falls between those edges. Use the opening guide and closing guide for the step-by-step work; keep this page for the dates.
North Richland Hills, TX — 151 swim days a yearThe bar compresses North Richland Hills's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the March 10–March 31 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 9. Wherever the today marker sits, the nearest color change is your next appointment.
The North Richland Hills pool calendar
Opening — target March 17
Target March 17; the practical window runs March 10–March 31, and the 7-day mean crosses the 61°F threshold around March 31. Cold-water starts are the cheap ones.
Closing — deadline November 9
The window opens October 30 once water leaves the algae zone; the model deadline is November 9, a week ahead of the November 20 freeze normal.
Estimated water temperature by month
This is North Richland Hills'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 45° | 47° | 53° | 61° | 69° | 78° | 83° | 85° | 81° | 72° | 60° | 50° |
Warmest water typically June–September (peaking near 85°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with New Braunfels's pool season and Odessa's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Texas season index.
North Richland Hills pool season FAQ
When should I open my pool in North Richland Hills, TX?
Open by March 17 — the model places North Richland Hills's 61°F crossing about two weeks later, and every warm day you wait pushes the water toward the 65°F algae zone. The North Richland Hills opening guide has the 12-step sequence.
When should I close my pool in North Richland Hills?
Close by November 9: cool water keeps its winter chemistry, but freeze damage is the hard stop. The North Richland Hills closing guide sequences the work backward from that date.
How long is the swim season in North Richland Hills?
North Richland Hills averages 151 days a year with normal highs of 80°F or better — about 9 days later than the Texas median. The Texas season index ranks all 68 covered cities by the same metric.
How warm does pool water get in North Richland Hills?
An unheated pool near North Richland Hills typically peaks around 85°F in high summer and bottoms out near 45°F in winter, spending roughly 3 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 North Richland Hills hits the closing window
Data: NOAA 1991–2020 climate normals via Ft Worth WSFO (5.0 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.