TEXT-MESSAGE WEATHER · NO SERVICE REQUIRED
Wondering if you’ll need the tent tonight?
Text your coordinates to Tentcast and get a real NWS forecast back in seconds — through the satellite messaging already built into your iPhone. Works on Garmin inReach and ZOLEO too. No app. No $400 device.
By texting Tentcast you agree to receive automated text message replies. Msg & data rates may apply. Reply STOP to cancel, HELP for help.
Tentcast · SMS
TENT?
Where’s camp? Send your coords (Compass app shows them) and I’ll tell you if you need the tent.
45.8181, -110.8965
Skip the tent - rain 10% tonight. Full forecasts anytime, anywhere - tentcast.com
A forecast starts with a text.
01 / Grab your coordinates.
Your phone’s GPS works with zero service — the Compass app shows them, or use our one-tap Shortcut.
02 / Text them to the 406.
wx 45.8181, -110.8965 — over cell, or over satellite when there’s no signal (iPhone 14 or newer, just point at the sky).
03 / Get the forecast that matters.
Elevation-corrected temps, wind, precip, a 3-day outlook, warnings, and wildfires near you — in one text, in seconds.
Add the iPhone Shortcut
Short answers. Useful answers.
wx
45.679,-110.543 el 6240ft
Now 54F wind WNW12 clr
12h 54>46>43>42F pcldy wind<=12
fcst
Tngt clr lo 41
Wed 59/41 clr; Thu 61/49 clr; Fri 57/44 tstm 34%
alerts
alerts 25mi:
*WINTER WX ADVSY til Thu 6PM (11mi NE)
FIRE Sand Creek 35.5kac 36% (13mi SE)
Forecasts for ANY coordinates — tomorrow’s pass, base camp, the drainage you’re headed into. Not just where you’re standing.
Add satellite text screenshot
Add forecast response screenshot
Works with the gear you already carry.
iPhone satellite messaging works in the US, requires iOS 18+, and needs a view of the sky.
Pick your weather window.
Free
$0
TENT? verdicts (5/month) + help. The fun question, answered.
Tentcast
$29/year
$19/year founding offer
Unlimited wx, fcst, alerts. Any coordinates. The Shortcut. Less than $2.50/month for forecasts anywhere you can see the sky.
Tentcast Pro · Coming soon
$49/year
Everything plus new features soon to be announced.
Get on the list before you leave town.
We onboard in weekly batches. Nothing sends until you text us first.
You’re on the list. We onboard in weekly batches — watch your texts. Nothing sends until you text us first.
Good questions to ask before leaving town.
Does this really work with no cell service?
Where does the weather data come from?
What about wildfires?
Does it work everywhere?
Is this an emergency service?