Grantham 14-Day Forecast
Lincolnshire, England
Grantham Outlook (Next 14 Days)
Across Grantham today, temperatures stay comfortable overall, while a showery theme only brief dry intervals come and go. The feel can shift subtly from one spot to another as cloud breaks and showers move through.
The broader signal for Grantham leans towards an unsettled pattern overall, with showers returning at times and comfortable temperatures overall. As the wider pattern evolves, the detail can adjust between updates, even when the overall direction stays the same. Near-term detail is typically the most reliable, while later stages focus on the broader direction of travel. The charts show the clearest signal of how the pattern shifts, with the daily table adding the practical day-by-day context.
Daily Forecast
| Date | High | Low | Condition | Wind | Rain % | Humidity | Visibility | UV | Sunrise | Sunset |
|---|---|---|---|---|---|---|---|---|---|---|
| Thu, 4 Jun | 16°C | 11°C | Patchy rain nearby | 32 km/h | 88% | 81% | 9 km | 5 | 04:41 AM | 09:20 PM |
| Fri, 5 Jun | 15°C | 10°C | Patchy rain nearby | 25 km/h | 73% | 70% | 10 km | 4 | 04:40 AM | 09:21 PM |
| Sat, 6 Jun | 14°C | 8°C | Patchy rain nearby | 24 km/h | 75% | 87% | 9 km | 5 | 04:39 AM | 09:22 PM |
| Sun, 7 Jun | 18°C | 9°C | Patchy rain nearby | 26 km/h | 73% | 79% | 9 km | 4 | 04:39 AM | 09:23 PM |
| Mon, 8 Jun | 17°C | 11°C | Moderate rain | 23 km/h | 92% | 84% | 8 km | 3 | 04:38 AM | 09:24 PM |
| Tue, 9 Jun | 16°C | 9°C | Cloudy | 23 km/h | 73% | 70% | 10 km | 3 | 04:38 AM | 09:25 PM |
| Wed, 10 Jun | 18°C | 10°C | Patchy rain nearby | 41 km/h | 73% | 75% | 8 km | 3 | 04:37 AM | 09:26 PM |
| Thu, 11 Jun | 19°C | 9°C | Partly Cloudy | 24 km/h | 2% | 67% | 10 km | 4 | 04:37 AM | 09:27 PM |
| Fri, 12 Jun | 21°C | 11°C | Patchy rain nearby | 27 km/h | 73% | 74% | 10 km | 3 | 04:37 AM | 09:27 PM |
| Sat, 13 Jun | 23°C | 8°C | Patchy rain nearby | 19 km/h | 73% | 72% | 10 km | 4 | 04:36 AM | 09:28 PM |
| Sun, 14 Jun | 19°C | 13°C | Patchy rain nearby | 27 km/h | 73% | 75% | 10 km | 4 | 04:36 AM | 09:29 PM |
| Mon, 15 Jun | 20°C | 9°C | Patchy rain nearby | 15 km/h | 73% | 78% | 10 km | 3 | 04:36 AM | 09:29 PM |
| Tue, 16 Jun | 20°C | 12°C | Patchy rain nearby | 9 km/h | 73% | 78% | 9 km | 4 | 04:36 AM | 09:30 PM |
| Wed, 17 Jun | 23°C | 11°C | Sunny | 11 km/h | 2% | 71% | 10 km | 5 | 04:36 AM | 09:30 PM |
Temperature Trend
Rain Probability
Wind Speed
UV Index
Forecast context and reference links
For Grantham, 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
How is the weather likely to develop in Grantham over the next two weeks?
Across the next two weeks in Grantham, the bigger picture is shaped by a Patchy rain nearby theme on many days. Temperatures hold fairly steady overall. Typical range: highs up to 23°C, lows down to 8°C. Rain-risk signal: 92% at peak (12 higher-risk days). Wind: a windiest-day signal around 41 km/h. UV: peaks around 5 on brighter days. Detail is usually strongest in the first few days. Later values are best read as the likely pattern rather than exact timing.
How should I interpret confidence in the Grantham 14-day forecast?
Confidence is typically highest in the first 3–5 days. Beyond a week, use it mainly to judge the likely regime (more settled versus more changeable) rather than exact timing — small shifts in storm tracks can move rain bands and wind peaks.
Is there an hourly breakdown for Grantham today?
Yes — you’ll see hourly detail for today and a day-by-day view for the rest of the 14 days. For planning, combine the two: timing from hourly, direction from daily.
What is the temperature trend in Grantham over the next two weeks?
Over the next 14 days in Grantham, Temperatures hold fairly steady overall. Use the Temperature Trend chart to see the direction more clearly than any single day’s number.
What does the ‘headline condition’ mean in the Grantham forecast?
It summarises the most representative weather type for the day. Local effects and timing shifts still matter — especially around fronts — so treat it as a headline, not a minute-by-minute guarantee.