<p>The best solution I've found so far is to use Dark Sky's <a href="https://darksky.net/dev/docs#time-machine-request%20API" rel="nofollow noreferrer">Time Machine</a>. You can request the forecast for any number of days in the future, and beyond 10 days, the API simply returns historical data.</p>

CC BY-SA 4.0
2018-08-16T15:47:40.600Z
It's worth echoing here that the reliability of these forecasts is likely quite low, considering the chaotic nature of land-atmosphere-ocean interactions and our difficulty in forecasting/modelling them beyond 5-7 days.
Zeitsperre
CC BY-SA 4.0
2018-08-16T11:56:31.057Z
2022-01-25T20:12:47.977Z
2022-01-25T20:12:47.977Z
charliesneath
<p>The trouble is, any skill above climatology beyond about 5-7 days is very very low.</p>
<p>So sites could offer such forecasts, but they wouldn't be worth much of anything.</p>
<p>The main thing they could offer that has any use that is an indication of what typically happened in previous years (i.e. climatology)... but unfortunately I don't know any site that offers such on an hourly basis.  We could use more of that!  Still, if you're familiar with the area you're looking up for, you're probably fairly used to the typical weather for a given time of year.</p>
<p>There has been some <a href="http://www.cpc.ncep.noaa.gov/products/verification/summary/" rel="nofollow noreferrer">small skill</a> at making blurrier longer range forecasts... basically estimating either within a large range (such as <a href="https://en.wikipedia.org/wiki/Tropical_cyclone_seasonal_forecasting" rel="nofollow noreferrer">hurricane forecasts</a>) or (more often) giving probabilities of whether the weather will be above or below that climatological expectations.<br />
For more about the very limited skill of week 2 forecasts, see <a href="https://earthscience.stackexchange.com/questions/22385/how-accurate-is-the-national-weather-service-8-to-14-day-outlook/23280#23280">this answer</a>.</p>
<p>But such long-range forecasts don't have nearly the precision to offer hourly forecasts to be of any legitimate use.  It'd be like saying it'll take you 46 minutes and 7 seconds to get to work two weeks from Thursday... entirely misleading specificity.</p>
<p>So basically if you're eagerly planning for a trip in 10 days or a wedding in a month or two, you're much better off staying far away from such <a href="https://weather.com/weather/monthly/l/Orlando+FL+USFL0372:1:US" rel="nofollow noreferrer">novelty longrange forecasts</a> until the event gets much closer.  Until then, all you can really figure on is what's typical for the given time of year.</p>

CC BY-SA 4.0
2018-07-12T18:05:59.313Z
2022-01-25T22:48:58.490Z
2022-01-25T22:48:58.490Z
JeopardyTempest
<p><a href="https://www.wunderground.com" rel="nofollow noreferrer">Weather Underground</a> and <a href="http://www.intellicast.com" rel="nofollow noreferrer">Intellicast</a> provide ten day forecasts in a beautiful (to a nerdy engineer) graphical format, in hourly increments. The skill in the last two to five days of those extended forecasts is suspect.</p>

CC BY-SA 4.0
2018-07-13T02:05:21.133Z
2018-07-13T03:46:01.220Z
2018-07-13T03:46:01.220Z
David Hammen
<p><a href="http://wwwl.accuweather.com/premium_forecast_benefits.php" rel="nofollow noreferrer">Accuweather Premium</a> claims 15 days of hourly forecasts.  </p>

<p><a href="https://www.zazzle.com/cute_pattern_weather_dart_board-256665018944132042" rel="nofollow noreferrer">This</a> may be just as good though.</p>

CC BY-SA 4.0
2018-07-12T17:40:43.673Z
2018-07-12T17:40:43.673Z
Mark
<p><a href="https://www.ecmwf.int/en/forecasts/charts/catalogue/?facets=Range,Medium%20(15%20days)" rel="nofollow noreferrer">ECMWF</a> (European Centre for Medium-Range Weather Forecasts) provides global forecast to member organizations and probably there is a way to obtain their hourly forecast up to 15 days. They provide average fields to the public, but the hourly data is not available that way. You can contact them directly and ask them about availability.</p>

CC BY-SA 4.0
2018-07-12T20:29:28.707Z
ECMWF provide those data to member organisations, being national meteorological agencies.  They are not responsible for providing such data to members of the public and probably won't.
gerrit
CC BY-SA 4.0
2018-07-12T20:36:50.780Z
As a researcher, I have contacted them directly in the past for specific datasets. As I don't know if the question was posted for that purpose, that is what my answer was trying to address.
arkaia
CC BY-SA 4.0
2018-07-12T15:19:23.747Z
2018-07-12T15:19:23.747Z
arkaia
<p>No.</p>

<p>The atmosphere is too chaotic for hourly forecasts at time scales beyond several days to be useful.</p>

CC BY-SA 4.0
2018-07-12T13:56:58.227Z
2018-07-12T13:56:58.227Z
gerrit
<p>I'm working on a small project and am trying to find a way to get the very extended hour-by-hour forecast for a location. Most services (Darksky, etc.) seem to offer 7-day extended hourly forecasts, but I'm not able to find anything beyond that.</p>

<p>Does anyone have suggestions?</p>

<meteorology><weather-forecasting>
Are there any weather services that provide hourly forecasts beyond 7 days?
charliesneath
# Are there any weather services that provide hourly forecasts beyond 7 days?

(Asked by: username_0 on 2018-07-12)

I'm working on a small project and am trying to find a way to get the very extended hour-by-hour forecast for a location. Most services (Darksky, etc.) seem to offer 7-day extended hourly forecasts, but I'm not able to find anything beyond that.

Does anyone have suggestions?

**Tags:** meteorology, weather-forecasting


---

## 6 answers

### Answer by username_0 on 2018-08-16. Score: 0 | Accepted answer

The best solution I've found so far is to use Dark Sky's [Time Machine](https://darksky.net/dev/docs#time-machine-request%20API). You can request the forecast for any number of days in the future, and beyond 10 days, the API simply returns historical data.

> **Comments:**
> **username_1**: It's worth echoing here that the reliability of these forecasts is likely quite low, considering the chaotic nature of land-atmosphere-ocean interactions and our difficulty in forecasting/modelling them beyond 5-7 days.  

---

### Answer by username_2 on 2018-07-12. Score: 8

The trouble is, any skill above climatology beyond about 5-7 days is very very low.

So sites could offer such forecasts, but they wouldn't be worth much of anything.

The main thing they could offer that has any use that is an indication of what typically happened in previous years (i.e. climatology)... but unfortunately I don't know any site that offers such on an hourly basis. We could use more of that! Still, if you're familiar with the area you're looking up for, you're probably fairly used to the typical weather for a given time of year.

There has been some [small skill](http://www.cpc.ncep.noaa.gov/products/verification/summary/) at making blurrier longer range forecasts... basically estimating either within a large range (such as [hurricane forecasts](https://en.wikipedia.org/wiki/Tropical_cyclone_seasonal_forecasting)) or (more often) giving probabilities of whether the weather will be above or below that climatological expectations.  
For more about the very limited skill of week 2 forecasts, see [this answer](https://earthscience.stackexchange.com/questions/22385/how-accurate-is-the-national-weather-service-8-to-14-day-outlook/23280#23280).

But such long-range forecasts don't have nearly the precision to offer hourly forecasts to be of any legitimate use. It'd be like saying it'll take you 46 minutes and 7 seconds to get to work two weeks from Thursday... entirely misleading specificity.

So basically if you're eagerly planning for a trip in 10 days or a wedding in a month or two, you're much better off staying far away from such [novelty longrange forecasts](https://weather.com/weather/monthly/l/Orlando+FL+USFL0372:1:US) until the event gets much closer. Until then, all you can really figure on is what's typical for the given time of year.


---

### Answer by username_3 on 2018-07-13. Score: 6

[Weather Underground](https://www.wunderground.com) and [Intellicast](http://www.intellicast.com) provide ten day forecasts in a beautiful (to a nerdy engineer) graphical format, in hourly increments. The skill in the last two to five days of those extended forecasts is suspect.


---

### Answer by username_4 on 2018-07-12. Score: 4

[Accuweather Premium](http://wwwl.accuweather.com/premium_forecast_benefits.php) claims 15 days of hourly forecasts.

[This](https://www.zazzle.com/cute_pattern_weather_dart_board-256665018944132042) may be just as good though.


---

### Answer by username_5 on 2018-07-12. Score: 3

[ECMWF](https://www.ecmwf.int/en/forecasts/charts/catalogue/?facets=Range,Medium%20(15%20days)) (European Centre for Medium-Range Weather Forecasts) provides global forecast to member organizations and probably there is a way to obtain their hourly forecast up to 15 days. They provide average fields to the public, but the hourly data is not available that way. You can contact them directly and ask them about availability.

> **Comments:**
> **username_6**: ECMWF provide those data to member organisations, being national meteorological agencies.  They are not responsible for providing such data to members of the public and probably won't.  
> **username_5**: As a researcher, I have contacted them directly in the past for specific datasets. As I don't know if the question was posted for that purpose, that is what my answer was trying to address.  

---

### Answer by username_6 on 2018-07-12. Score: 2

No.

The atmosphere is too chaotic for hourly forecasts at time scales beyond several days to be useful.


---

