Find work windows tuned to the thresholds that decide your operations — and take the guesswork out of the forecast. Built by a meteorologist for roofing, paving & sealcoating, concrete, general construction, painting, lawn care, and snow & ice removal, to save you the time, material, and man-hours a bad weather call burns.
This is the part people come back for.
Adverse weather delays 45% of construction projects worldwide, costing owners and contractors billions every year — that's from a peer-reviewed review of 3,200+ studies (Schuldt et al., 2021, Sustainability), not a sales page. The delays you can't control. The bad calls, you can.
Rain on an unset slab means grinding, resurfacing, or tear-out — industry repair guides put removal and re-pour at $8–20+ per square foot. Do the math on an 800 sq ft pour and a bad call runs five figures. The reschedule was a phone call.
Sealcoat or paint that catches rain before it cures isn't a touch-up — it's the same job twice: strip or re-prep, re-apply, plus the callback and the crew day. One afternoon's guess, double the cost of the job.
Dispatch into weather that shuts the site down and you eat wages, fuel, and the mobilization — industry benchmarks put weather-idled crews at hundreds to thousands of dollars a day, with idle equipment alone at $35–50 per machine-hour.
The workable morning inside a "70% chance" day. The window after the front clears. The pour moved up a day ahead of the freeze. Weather-smart scheduling is won on the days a generic forecast would have scared you out of.
That gap is the whole product. The forecast says dry at two o’clock. It doesn’t say whether the slab has cured, whether the deck has dried off enough to coat, or whether last night’s frost is out of the ground yet. Those are the questions that actually decide your day, and answering them means running the clock backward and forward from right now, for each operation separately.
Concrete evaporation rate against ACI limits, sealcoat and paint cure conditions. Not “is it raining,” but will it set.
We carry what already fell into today’s answer, then work out how long the surface stays wet before it’s workable again.
The hours from your workday ending to the next morning. Lows, precipitation that never dried, and frost holding the start until it lifts.
Whether an application has long enough to bond before the next round comes through, or whether you just paid to water the lawn.
What you’re leaving open tonight, and what the night is going to do to it before the crew gets back.
All of the above, every day, for the next ten. So you’re scheduling around it instead of reacting to it.
Tear-off and a repair don’t share a wind limit. Paving and sealcoating don’t share a temperature. So every operation gets its own limits and its own answer, on the same site, on the same afternoon.
Sustained wind and gust limits, precip timing, and dry-in windows for tear-off and shingle work.
The mat-cooling clock for a clean lay-down, plus surface temperature and dew point for the cure. Two operations in one trade, each tuned to your site.
Evaporation rate, worked out from air temperature, humidity and wind, so pours do not crack.
Overlapping windows for framing, sitework, and exterior trades on one shared timeline.
Dew point and the temperature spread that decide whether an exterior coat actually cures.
Soil saturation for the mowing call, and the rainfast window before fertilizer and spray applications wash off.
Pavement temperature and precip timing for the treat-and-plow window before the freeze.
Three kinds pushed to your phone, plus official NWS warnings in the app’s alert list.
Rain, snow or ice, about a half hour before it reaches the site. Then another when it’s clearing and there are enough dry hours behind it to head back out.
Forecasts move. When one moves far enough to change the answer for one of your operations, you hear about it. Not every wiggle in a number.
Heavy rain, heavy snow, high wind, extreme heat and cold. Usually 12 to 72 hours ahead, so there’s time to move a crew or a delivery.
Warnings, watches and advisories from the National Weather Service for that job site, right in the app’s alert list next to everything else.
Type the question the way you’d say it out loud and get a straight answer back.
There’s a live NWS radar loop on every job site. The difference is the app is watching it too, at every site at once, and has already worked out what that cell means for the job.
Live radar and nowcast feed the recommendation, the hour strip, the windows and the alerts. When the radar changes, so do they.
It checks all your sites and speaks up about the one that’s actually going to be hit.
A light shower that won’t wet a surface isn’t worth a phone buzz. How hard, how long, how much.
Today’s recommendation for the site, and a separate call for each operation running on it.
The same site opened up: the hourly scroller and the next three days.
Ten days in one color-coded strip, per operation. The screen you plan around.
Precipitation moving in, the forecast shifting, severe weather coming, NWS warnings.
Your trades, operations, working hours and alerts. Set it once.
We use the newest and most accurate forecast models available and blend them ourselves. Then a meteorologist mapped all of it onto what each operation can and can’t take.
The newest, most accurate models we can get, blended, so one bad run never drives your recommendation.
Official NWS forecasts in every outlook, and NWS warnings straight through as alerts.
Radar and short-range projections for the next few hours, where job-site timing is won or lost.
Live observations at your site, plus what already fell, because yesterday changes today.
Custom logic pulls it into one picture for your exact address, not a regional average.
Checked against the limits for the job in front of you. Wind, temperature, dew point, soil, rainfast, cure.
The first frosts of fall don't cancel roofing days — they shorten them from the front. Here's why a frosted deck is a genuine stop, how to read which mornings will frost, and how to plan the start time instead of the day.
Rain on a fresh pour isn't one risk, it's a countdown — the damage rain can do falls off hour by hour after placement. Here's the window that matters, what rain actually does to a green slab, and how to time a pour against an incoming system.
A dry sky is not a dry surface. Here's how recent rainfall keeps asphalt work on hold after the radar clears — why paving and sealcoating carry different waits, and what actually decides when the surface is ready.
On a mixed-weather day, the question isn't whether to work — it's where. Here's why one forecast produces different verdicts at different addresses, and how reading per-site windows side by side turns a marginal day into a full one.
It's a web app — no app store, no download wait. Add it to your phone's home screen and it opens and works just like a native app. Free for two weeks, no card.
Yes. DecideWeather is built for outdoor contractors, covering roofing, paving & sealcoating, concrete, general construction, painting, lawn care, and snow & ice removal. It turns the forecast into a simple Go, Caution or Stop recommendation and an hour-by-hour work window for each operation you run, at each of your job sites.
Ten days, and not just as a daily forecast. You get working windows for every day, broken out by operation, so you can look at next Thursday on Monday and schedule the concrete pour, the sealcoat or the tear-off around it.
Yes. Every job site has a live NWS radar loop and current on-site conditions, right there when you want to look. The app reads that same radar and nowcast data itself, so your recommendation, your hour strip and your alerts stay current with what the radar is actually showing.
Three kinds get pushed to your phone. Precipitation moving in at a site, rain or snow, and a heads up when it is clearing. Forecast change alerts when the outlook shifts enough to change the answer for one of your operations. And extreme weather alerts for heavy rain, heavy snow, high wind and extreme heat or cold, usually 12 to 72 hours ahead. Official NWS warnings, watches and advisories for each site appear in the app’s alert list alongside them.
We try hard not to. Alerts are held to the hours your crews actually work, and light passing showers that will not wet a surface do not qualify. Forecast change alerts only fire when the forecast crosses a line that changes your answer, not every time a number moves a little.
Roofing, Paving & sealcoating, Concrete, General construction, Painting, Lawn care, Snow & ice removal. That is 7 trades and 11 separate operations, each with its own thresholds, from roofing wind limits to concrete evaporation rate to the soil saturation that decides whether ground work can run.
Yes, and this is a big part of it. A dry hour is not always a workable hour. The app carries the precipitation that already fell into today’s recommendation, then looks forward through drying and cure. That covers concrete evaporation rate, sealcoat and paint cure conditions, how long a paved surface takes to dry off, and the rainfast window before an application washes off.
Yes. It reads the overnight hours from the end of your workday through the next morning, because that is often what decides whether tomorrow starts on time. An overnight low, a surface that never dried, or a frost that holds the crew until it lifts.
A normal weather app tells you the weather. It does a good job of that, but it does not know what you do for a living, so you are left working out what 14 mph or a 40% chance means for tear-off. DecideWeather already knows the limits for each operation you run and checks every hour of the forecast against them, at your exact job site.
A built-in assistant you can ask normal questions, like “can we pour at Riverside Thursday?” It knows your job sites and the operations on them, and it answers from the same forecasts, verdicts and work windows the rest of the app is built on, so it agrees with what you see on screen. It also remembers the conversation, so you can follow up with “what about Friday?”
A meteorologist. We use the newest and most accurate forecast models available and blend them ourselves, and the thresholds behind each operation were built from scratch for outdoor work rather than adapted from a consumer weather app.
Yes. DecideWeather is a web app you install on your phone’s home screen on iPhone, Android or desktop. There is a 2-week free trial and no app store needed.
Add your job sites, tick the operations you run, and see what the next ten days look like for the work you actually do.
