Grantham Rain Forecast
Lincolnshire — Precipitation & Rainfall
Grantham Rain Outlook
Today in Grantham, the weather is defined by persistent showers moving through with limited respite across the area.
Looking ahead over the next 14 days, the rain outlook for Grantham suggests frequent showers and little opportunity for prolonged dry periods. Frontal systems from the Atlantic are expected to bring periodic spells of rain through the period.
Current & Today
Now
Today
Today’s Hourly Rain Chance
14-Day Precipitation
Rain Charts
Forecast context and reference links
Forecast charts summarise likely conditions, but day-to-day outcomes in the UK often depend on how the larger pressure pattern evolves. Use the context links below to interpret the signal more reliably.
- 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 Weather Front, Cold Front, Warm Front, Occluded Front, Relative Humidity, and Dew Point.
FAQ
Will it rain in Grantham today?
Rain risk in Grantham today is around 88%. Timing can vary locally, especially with showers and passing fronts.
What is the chance of rain in Grantham over the next 14 days?
The 14-day rain outlook for Grantham shows day-by-day rain chances and an overall wet/dry signal. Use the first few days for detail and the later period for broader risk.
What does ‘chance of rain’ mean for Grantham?
It’s the likelihood of measurable precipitation at some point — it does not mean it will rain continuously or everywhere in the area.
When is rain timing most reliable in Grantham?
Timing is usually most reliable in the next 24–72 hours. Beyond that, use the outlook to understand overall risk rather than exact hours.
Does the rain forecast for Grantham include showers and drizzle?
Yes — the precipitation outlook covers all measurable precipitation types. Light drizzle can be harder to pin down precisely than organised rain bands.