Altarnun 14-Day Forecast
Cornwall, England
Altarnun Outlook (Next 14 Days)
Altarnun starts out with a mild feel, while a mixture of dry spells and showery interludes come and go. Southern areas faring best for warmth. Taken together, it has a mixed feel with only light winds in the background.
a changeable pattern overall, with alternating spells and mild temperatures looks like the best summary for Altarnun over the next fortnight. As the wider pattern evolves, the detail can adjust between updates, even when the overall direction stays the same. For planning, use the visual trends first, then the daily breakdown for the most workable detail. Further out, the forecast is best read as the dominant pattern and its swings, rather than a precise day-by-day script.
Daily Forecast
| Date | High | Low | Condition | Wind | Rain % | Humidity | Visibility | UV | Sunrise | Sunset |
|---|---|---|---|---|---|---|---|---|---|---|
| Thu, 4 Jun | 15°C | 10°C | Patchy rain nearby | 39 km/h | 90% | 87% | 9 km | 6 | 05:08 AM | 09:23 PM |
| Fri, 5 Jun | 14°C | 9°C | Patchy rain nearby | 29 km/h | 79% | 78% | 10 km | 6 | 05:08 AM | 09:24 PM |
| Sat, 6 Jun | 15°C | 11°C | Moderate rain | 44 km/h | 93% | 87% | 9 km | 2 | 05:07 AM | 09:25 PM |
| Sun, 7 Jun | 16°C | 11°C | Moderate rain | 30 km/h | 96% | 91% | 9 km | 5 | 05:07 AM | 09:26 PM |
| Mon, 8 Jun | 14°C | 10°C | Moderate rain | 39 km/h | 92% | 83% | 9 km | 3 | 05:06 AM | 09:27 PM |
| Tue, 9 Jun | 14°C | 10°C | Patchy rain nearby | 25 km/h | 73% | 85% | 10 km | 3 | 05:06 AM | 09:28 PM |
| Wed, 10 Jun | 17°C | 11°C | Patchy rain nearby | 23 km/h | 73% | 88% | 10 km | 3 | 05:06 AM | 09:28 PM |
| Thu, 11 Jun | 19°C | 10°C | Partly Cloudy | 12 km/h | 5% | 81% | 9 km | 4 | 05:05 AM | 09:29 PM |
| Fri, 12 Jun | 23°C | 12°C | Partly Cloudy | 21 km/h | 5% | 78% | 10 km | 5 | 05:05 AM | 09:30 PM |
| Sat, 13 Jun | 23°C | 16°C | Partly Cloudy | 26 km/h | 73% | 81% | 10 km | 5 | 05:05 AM | 09:30 PM |
| Sun, 14 Jun | 22°C | 14°C | Patchy rain nearby | 19 km/h | 73% | 86% | 9 km | 4 | 05:05 AM | 09:31 PM |
| Mon, 15 Jun | 23°C | 14°C | Sunny | 14 km/h | 8% | 86% | 7 km | 5 | 05:05 AM | 09:31 PM |
| Tue, 16 Jun | 24°C | 15°C | Sunny | 14 km/h | 4% | 82% | 10 km | 5 | 05:05 AM | 09:32 PM |
| Wed, 17 Jun | 22°C | 13°C | Partly Cloudy | 18 km/h | 6% | 81% | 9 km | 5 | 05:05 AM | 09:32 PM |
Temperature Trend
Rain Probability
Wind Speed
UV Index
Forecast context and reference links
For Altarnun, the forecast is best read as a combination of short-range detail and broader regime. The first few days carry the highest timing confidence, while later periods describe direction and pattern.
- England Climate for regional patterns and seasonal tendencies.
- UK Climate Overview for a national baseline and how regions compare.
- England for location browsing and regional navigation.
How to interpret confidence
For how forecast reliability changes with lead time, see Forecast Confidence. For transparency on how WeatherEngland sources and updates data, see Methodology.
Background guides
- UK Weather Patterns
- UK Seasonal Weather
- UK Weather Hazards
- UK Weather Safety
- UK Jet Stream
- UK Microclimates
Glossary support
Start with the Weather Glossary. Useful terms for this page include Jet Stream, Air Mass, Zonal Flow, Atmospheric Blocking, Weather Front, and Pressure Trend.
FAQ
What is the 14-day weather forecast for Altarnun?
Over the next 14 days in Altarnun, the day-to-day pattern is led most often by Patchy rain nearby as the headline condition. Temperatures trend a little higher later in the period. Typical range: highs up to 24°C, lows down to 9°C. Rain-risk signal: 96% at peak (9 higher-risk days). Wind: a windiest-day signal around 44 km/h. UV: peaks around 6 on brighter days. Confidence is highest early on; later in the period, look for the trend and regime rather than hour-by-hour precision.
How accurate is the 14-day forecast for Altarnun?
Short-range detail is usually strongest early on. Later in the period, the forecast is best read as a trend signal: direction of temperatures, how changeable it looks, and whether winds/rain are more likely to feature.
Can I see hour-by-hour detail for Altarnun today?
Yes — near-term hourly detail is available for today, alongside day-by-day summaries across the full 14-day window. Use the hourly view for timing windows; use the daily table for the broader run of weather.
How do temperatures change in Altarnun across the next 14 days?
The broader temperature signal for Altarnun is: Temperatures trend a little higher later in the period. The chart gives the best read of whether that drift is meaningful or just day-to-day noise.
What does the ‘headline condition’ mean in the Altarnun forecast?
It’s a top-line description of what is most likely to characterise the day. In the UK, the detail can move around, so the charts help show whether it is a brief spell or a more persistent feature.