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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the WordPatch weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
The live forecast above gives the current conditions for Knebworth, Hertfordshire. For travel planning, late spring to early autumn (May–September) offers the most reliable weather, with July and August being warmest but also busiest due to school holidays. Pack layers and a waterproof jacket year-round.
When is the best time to visit Knebworth?
For open-air events at Knebworth House or the nearby Stevenage town centre, June and September strike the best balance of warmth and lower crowds. The average high in July reaches 22°C, but rainfall is spread fairly evenly across the year. If you want crisp, clear days for walking, October can also be pleasant, though temperatures drop to around 14°C. Avoid December to February if you dislike cold and damp; frost and fog are common.
What should you pack for Knebworth weather?
Even in summer, a light jumper or fleece is useful for evenings. A compact umbrella and waterproof shoes are wise because showers can develop quickly. In winter (November–March), bring a warm coat, hat and gloves; frost and occasional snow can disrupt travel. For the latest travel updates, check bbc news for road and rail disruptions in Hertfordshire.
How does Knebworth weather compare to nearby Stevenage?
Knebworth and Stevenage have nearly identical conditions, being only 3 miles apart. For specific local details, see bbc weather stevenage – it uses the same forecast zone and is updated hourly by the Met Office.
When is the driest month in Knebworth?
February and March are typically the driest months, with about 40mm of rain each. However, they are also the coldest. May and June offer a good mix of reasonable rainfall (around 50mm) and warming temperatures.
Are there any weather warnings I should know about?
The Met Office issues yellow and amber warnings for severe weather. Check the live forecast above for any current warnings, and follow local bbc news for updates on travel and school closures.
Looking for a wider view? Visit our UK weather hub or check the 10 Day Weather Forecast UK for longer-range planning.