Maybe one day a weather feature will be available to know wether you are traveling into rain, snow,or sunshine!
The StreetPilot 7500 does something along those lines... you can get weather via an XM Radio receiver and data service - and that data can be displayed on the device.
What I'd like is to have Garmin's MyCast weather services that you can get for cell phones integrated into a GPSr.
Both the Nuvi 295 and 1690 provide a weather service as part of their connective services.
I don't think I'd look up weather forecasts on a GPS even if mine had that feature.
But what would be useful to me if it wasn't too expensive, especially on long, lonely drives down interstate highways when you see those dark threatening skies approaching, is live weather radar with 90-minute loops (showing how the storms have changed in the last 90 minutes) along with National Weather Service watch and warning boxes drawn on the screen, with the current location marked onscreen. That could help me make an informed decision about whether staying on that road is a good idea.
While a GPS such as the Nuvi 295 can display 90 minute radar loops and weather watch and warning boxes, you need WiFi access, which you don't always have on an interstate. Plus, it's unsafe and a challenge to try and navigate the web while driving, and I don't think this GPS service would be able display the current location on the same screen as the weather radar.
I don't know about other GPS makers, but Garmin currently markets only one highway-based portable GPS unit, this one intended for bikers, the Zumi 665, which can get a somewhat primitive weather radar display with current location marked, and no radar loops, with a reasonable $10 a month subscription to XMNavWeather.
Some OEM in-car navigation displays can also do XMNavWeather for $10 a month. (Garmin makes several other aviation and marine GPS units that can do this, as well, but I think the Zumi 665 is the only portable highway GPS unit they now sell that can do this.)
There is a way to get high-end weather radar graphics and detailed weather info on the road using a laptop--stormchasers often get this service, along with some truckers--but it costs $100 a month!
Again, since this isn't GPS-based, your current location may not be displayed onscreen unless you've pinpointed it with a separate GPS device and centered the display there, something you're not going to be able to quickly and safely do while driving.
My new 295W with Wi-Fi has weather for the current time and projected weather for the next 6 days. Seems to be very accurate and current but you must have a Wi-Fi connection available to get it.
It also allows you to select and other US City and get the current and projected weather forecast there.
I actually use the feature all the time and along with email are two of the new features I really like.
I had the radar and weather forecast features with my 885T with the MSN Direct service and used it while traveling. That service is ending in around a year,
Is the weather radar overlayed on the Map?
WiFi is the key. I have an iPod Touch 3G and I use that for weather and other information but, as noted, you need WiFi. One of the auto manufacturers just announced an in-car WiFi option for their vehicle. It will connect to the outside world via a 3G link (arguably not terribly fast) but you will be able to use WiFi devices inside the vehicle. I would love to see a mobile WiFi device that could be put in any car that would establish a cellular data connection and provide in-car WiFi. That would open a whole new world to WiFi connected devices.
The MSN Direct service (available until Jan. 1, 2012) provides current weather conditions and forecasts for all supported models.
The nuvi 2x5 and 7x5 models also have Doppler weather maps.
A GDB50 or GDB55 receiver is required to receive the MSN Direct service.
Didn't know that was possible
A five minute warning. LOL
Long enough to pull over and pull on my wet weather gear.
The last two storms I waited a tad too long, well one of them I had no choice, I stopped at the very next exit...
Up here, road conditions (during winter) are more important than weather. Last October we hit a an overnight blizzard in Great Falls. The next morning the skies were clear and the temperature was fine, but the roads were treacherous!
The MDOT (and most other states) provide radio announcements on the radio, but the same is true for weather reports. It would be soiffy if the GPS could give updated road conditions based on where you are.
Didn't know that was possible
Of course here in Southern France it'd often say "Sunny and just fine for a drink and a dip in the pool", but we DO get snow once a year, around February
My older unit had the MSN Weather Service. I loved being able to see the 'live' radar, and to see the forecast for the next few days.
The C550 as well provided you use a GDB50 MSN Direct receiver. I borrowed a friends GDB50 from his Nuvi 680 and my C550 became a C580. A Nuvi 765 should function as a 785 with a GDB50 connected.
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