Sources: Ready.gov hurricanes; Florida Special Needs Registry; Texas STEAR; NOLA Ready hurricanes; Medicare.gov disasters and emergencies; NOAA NCEI 1991–2020 normals (linked per city); manufacturers’ manuals. Checked 14 October 2026. HHZ didn’t test any devices; the limits below come from manufacturers’ manuals. This isn’t medical advice.
The shared plan
| Step | Source |
|---|---|
| Register with your local registry (see your city below) | State or city emergency management |
| Know your evacuation zone and routes | Ready.gov |
| Keep phones charged and buy backup chargers | Ready.gov |
| Pack medication and supplies; access may be cut for days or weeks | Ready.gov |
| Agree an outage and evacuation plan with your clinician and supplier | Ready.gov (our outage plan) |
| Know how backup power works: batteries, and generators outdoors only | Ready.gov (CPAP battery options) |
Device temperature and humidity limits
| Device | Operating temperature | Operating humidity | Source |
|---|---|---|---|
| ResMed AirSense 11 | 41–95°F | 10–95% RH, non-condensing | User guide |
| ResMed AirCurve 11 | 41–95°F | 10–95% RH, non-condensing | User guide |
| Inogen Rove 4 / Rove 6 | 41–104°F | 15–90%, non-condensing | Rove 4, Rove 6 |
| CAIRE FreeStyle Comfort | 41–104°F | 15–95% RH, non-condensing | Manual |
| Oxlife Independence | 50–104°F | 10–95% at 82.4°F | Manual |
The manuals specify non-condensing humidity, so keep devices dry and indoors in air conditioning where possible.
Your city at a glance
| City | Registry or program | Peak normal high (NOAA) |
|---|---|---|
| Miami | Florida Special Needs Registry | 90.7°F (August) |
| Tampa | Florida Special Needs Registry | 91.2°F (August) |
| Houston | Texas STEAR | 94.9°F (August) |
| New Orleans | Smart911 medical profile; City-Assisted Evacuation | 91.4°F (July) |
Miami
| Month | Normal high | Normal low |
|---|---|---|
| June | 89.3°F | 76.3°F |
| July | 90.6°F | 77.5°F |
| August | 90.7°F | 77.7°F |
| September | 89.0°F | 76.9°F |
| October | 85.9°F | 74.2°F |
Source: NOAA NCEI 1991–2020 normals for Miami airport.
| Local step | Source |
|---|---|
| Register with the Florida Special Needs Registry; it doesn’t automatically qualify you for a special needs shelter and isn’t a guarantee of help | Florida Division of Emergency Management |
| Be ready to look after yourself for at least 72 hours | Florida Division of Emergency Management |
| Ask your county emergency management about shelter and transport options | Florida Division of Emergency Management |
Miami’s summer normal lows are about 77°F (NOAA) with highs near 91°F; use air conditioning and stay within the humidity ranges above.
Tampa
| Month | Normal high | Normal low |
|---|---|---|
| June | 90.5°F | 75.4°F |
| July | 91.0°F | 76.6°F |
| August | 91.2°F | 76.8°F |
| September | 90.2°F | 75.3°F |
| October | 85.6°F | 69.2°F |
Source: NOAA NCEI 1991–2020 normals for Tampa airport.
| Local step | Source |
|---|---|
| Register with the Florida Special Needs Registry; it doesn’t automatically qualify you for a special needs shelter and isn’t a guarantee of help | Florida Division of Emergency Management |
| Be ready to look after yourself for at least 72 hours | Florida Division of Emergency Management |
| Ask your county emergency management about shelter and transport options | Florida Division of Emergency Management |
Tampa’s summer normal highs are about 91°F with lows near 77°F (NOAA).
Houston
| Month | Normal high | Normal low |
|---|---|---|
| June | 92.3°F | 73.7°F |
| July | 94.5°F | 75.7°F |
| August | 94.9°F | 75.4°F |
| September | 90.4°F | 70.6°F |
| October | 82.8°F | 60.9°F |
Source: NOAA NCEI 1991–2020 normals for Houston airport.
| Local step | Source |
|---|---|
| Register with STEAR, a free, voluntary registry for local emergency planners and responders; people who are medically fragile or need extra medical help are among those who should register | Texas Division of Emergency Management |
| Register online or by dialing 2-1-1 | Texas Division of Emergency Management |
| Registering doesn’t guarantee a specific service; ask your local emergency management office how it uses STEAR | Texas Division of Emergency Management |
Houston Intercontinental’s normal high peaks at 94.9°F in August (NOAA), just under the AirSense 11’s 95°F operating limit, so air conditioning matters if power fails.
New Orleans
| Month | Normal high | Normal low |
|---|---|---|
| June | 90.0°F | 74.7°F |
| July | 91.4°F | 76.5°F |
| August | 91.3°F | 76.6°F |
| September | 88.1°F | 73.5°F |
| October | 80.6°F | 64.3°F |
Source: NOAA NCEI 1991–2020 normals for New Orleans airport.
| Local step | Source |
|---|---|
| Create a Smart911 profile and list power-dependent medical equipment in the medical section | NOLA Ready |
| If you can’t evacuate on your own because of medical or mobility needs, you might be eligible for home pickup in a City-Assisted Evacuation | NOLA Ready |
| Each person can bring one carry-on-sized bag; medical devices don’t count toward that limit | NOLA Ready |
| If the City issues a mandatory evacuation, everyone must leave | NOLA Ready |
New Orleans airport’s normal summer highs are about 90–91°F (NOAA).
After the storm
- Don’t touch electrical equipment if it’s wet or you’re standing in water (Ready.gov).
- People with lung conditions shouldn’t enter buildings with water leaks or visible or smelled mold (Ready.gov).
- Run generators outdoors only (power outage plan).
- Lost or damaged equipment: see replacing CPAP or oxygen after a disaster.
Verdict
For CPAP and oxygen users on the Gulf and Florida coasts, the main risk is losing power or having to evacuate, not the heat itself. Register with your local program, pack early, and agree a backup plan with your supplier before June.
Related: power outage plan, home oxygen fire safety, Medicare oxygen coverage, Phoenix heat guide.