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Live forecasts update automatically; written guidance last reviewed 13 June 2026 by the Insight Britain weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
The live forecast above gives you the most up-to-date conditions for Grantham, including temperature, wind speed and chance of rain. Grantham sits in Lincolnshire’s rolling countryside, where the weather is typical of the East Midlands – mild but changeable throughout the year.
How should I read the live forecast above for Grantham?
The widget shows current conditions, an hourly breakdown and a daily outlook up to seven days. Use the precipitation graph to see when rain is likely, and note the wind direction and speed flags. The “feels like” temperature accounts for wind chill and humidity, giving a more accurate sense of how it will actually feel outdoors.
What is Grantham’s typical climate through the seasons?
Grantham has a maritime-influenced climate. Winters are cool but not severe, with overnight lows often around 1–2°C and daytime highs near 7–8°C. Spring brings milder temperatures and increasing sunshine. Summers are warm, typically reaching 20–22°C, though occasional heatwaves push higher. Autumns are cool and damp. Rainfall is fairly evenly spread throughout the year – around 600–650mm annually – and winds are moderate, though stronger in winter. The town lies inland, sheltered by the Lincolnshire Wolds to the east and the Vale of Belvoir to the west, so it can feel slightly cooler than coastal areas in summer and colder in winter.
When is the best time to visit Grantham, and what should I pack?
Late spring (May to June) and early autumn (September) offer the most pleasant weather, with milder temperatures and lower rainfall probability. Pack layers: a waterproof jacket, comfortable walking shoes, a jumper for cooler evenings, and sunscreen for occasional sunny spells. An umbrella is useful year-round.
What nearby areas do Grantham weather readers also check?
If you’re looking at Grantham, you may also be interested in conditions in nearby towns. Check the Sleaford weather, Melton Mowbray weather, Stamford weather, or the weather in Nottingham. For a broader picture, see the UK weather hub or browse all UK towns A–Z.
What will the weather be like in Grantham tomorrow?
Check the live forecast above for tomorrow’s daily summary. Generally, expect conditions similar to today but with possible changes in cloud cover or wind direction. The hourly breakdown gives the best detail, showing rain probability and temperature swings throughout the day.
What is the 10–14 day outlook for Grantham?
The 10-day forecast above provides a general trend, but confidence decreases after day 7. Look for pressure patterns: high pressure usually brings settled, dry weather; low pressure means more rain and wind. Always check back for updates, and see the full 10-day forecast for Grantham.
Does it rain a lot in Grantham?
Grantham receives moderate rainfall, typical for the East Midlands – around 600–650mm per year, with no distinct wet season. Rain is spread fairly evenly, though autumn and winter tend to be slightly wetter. You can expect rain on roughly one in three days, so a waterproof layer is always a good idea.
How accurate is the Grantham weather forecast?
Short-range forecasts (1–3 days) are generally reliable thanks to modern weather models. The 7-day outlook is a good guide but can shift with changing weather patterns. For critical planning, always refer to the live forecast above and check the UK weather warnings for any severe weather alerts.