The Knott weather forecast.

Forecast confidence: Thunderstorm timing is inherently uncertain and may shift by several hours.

Cloud-free timing: Cloudy early, clearing later.

A mixed day on The Knott: summit wind broadly 15-35 mph, with gusts 35-45 mph early in the morning (gale-force winds). Thunderstorms are a significant hazard from around midday into the evening. Exposed summits and ridges are a poor choice while storms are nearby. Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Any cloud sits well above the tops (base 700-1500 m) - clear summits. Cloud is likely to hang lowest on southeastern slopes; the northwestern side should see somewhat higher bases and better breaks. Little or no rain expected.

Forecast confidence: Thunderstorm timing is inherently uncertain and may shift by several hours.

Cloud-free timing: Around 0% early, improving to around 20% later.

A rough, clagged-in day on The Knott: summit wind broadly 15-30 mph, with gusts 30-40 mph during the afternoon (strong winds). A meaningful thunderstorm risk is indicated from the morning into the evening. Avoid committing to exposed ridges if storms begin to build. High spate risk based on forecast rainfall. Burns and unbridged crossings may become difficult or impassable. Most likely from around 17:00 until around 02:00 the following day. Much calmer lower down - generally 0-10 mph in the valley, rising towards the tops. Cloud base around 500–800 m in the morning, then around 700–1000 m around midday and 400–700 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view around midday. Cloud is likely to hang lowest on eastern slopes; the western side should see somewhat higher bases and better breaks. A persistently wet day is possible, with around 10-20 mm indicated; local totals could vary considerably. Confidence moderate (forecast models agree on the walking impact of the wind) - the summit peak could reasonably be 24-29 mph, so treat the headline as mid-range.

Forecast confidence: Thunderstorm timing is inherently uncertain and may shift by several hours.

Cloud-free timing: Around 67% early, falling to around 20% later.

A grey, cloudy day on The Knott: summit wind broadly 20-35 mph, with gusts 40-50 mph around midday (gale-force winds). A meaningful thunderstorm risk is indicated from early morning into the evening. Avoid committing to exposed ridges if storms begin to build. The ground is likely to be wet after recent rain. Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base around 1300–1600 m in the morning, lowering to 600–900 m around midday and 400–700 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view early in the morning. Cloud is likely to hang lowest on western slopes; the eastern side should see somewhat higher bases and better breaks. Little or no rain expected. Confidence moderate (Summit wind could be roughly 20-39 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 20-39 mph, so treat the headline as mid-range.

Forecast confidence: A low thunderstorm risk remains difficult to time precisely.

A grey, cloudy day on The Knott: summit wind broadly 10-20 mph, with gusts 15-25 mph around midday (fresh and blowy). Thunderstorms are possible from early morning into the afternoon. Keep an escape route from exposed ridges and descend if thunder develops. Cloud base around 400–700 m in the morning, then around 600–900 m around midday and 400–700 m by late afternoon. Expect the top to stay in cloud for most or all of daylight, with no dependable break. Cloud is likely to hang lowest on southwestern slopes; the northeastern side should see somewhat higher bases and better breaks. Little or no rain expected.

Forecast confidence: Thunderstorm timing is inherently uncertain and may shift by several hours.

Cloud-free timing: Cloudy early, clearing later.

A mixed day on The Knott: summit wind broadly 15-25 mph, with gusts 25-35 mph during the evening (strong winds). A meaningful thunderstorm risk is indicated from early morning into the evening. Avoid committing to exposed ridges if storms begin to build. Cloud base around 400–700 m in the morning, then around 900–1200 m around midday and 700–1000 m by late afternoon. Summit cloud should lift later, bringing a better chance of clear views. Cloud is likely to hang lowest on southwestern slopes; the northeastern side should see somewhat higher bases and better breaks. Little or no rain expected. Confidence moderate (Summit wind could be roughly 18-31 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 18-31 mph, so treat the headline as mid-range.

Forecast confidence: A low thunderstorm risk remains difficult to time precisely.

Cloud-free timing: Around 67% early, improving to around 100% later.

A wild day on The Knott: summit wind broadly 40-55 mph, with gusts 65-75 mph during the afternoon (storm-force winds). Thunderstorms are possible from early morning into the afternoon. Keep an escape route from exposed ridges and descend if thunder develops. Much calmer lower down - generally 15-25 mph in the valley, rising towards the tops. Any cloud sits well above the tops (base 900-2900 m) - clear summits. Cloud is likely to hang lowest on western slopes; the eastern side should see somewhat higher bases and better breaks. Some rain is likely, with around 2-5 mm indicated; timing and local totals remain uncertain. Cold on top: air temperature broadly 6 to 10°C, feeling around 0 to 4°C in the wind - wrap up. Low confidence (Summit wind could be roughly 38-61 mph, which changes how difficult exposed walking may feel) - the summit peak could be anywhere from 38 to 61 mph; check again nearer the time.

Forecast confidence: Summit wind could be roughly 41-59 mph, which changes how difficult exposed walking may feel.

A wild day on The Knott: summit wind broadly 35-60 mph, with gusts 70-80 mph around midday (storm-force winds). Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Cloud base around 600–900 m in the morning, then around 1400–1700 m around midday and 700–1000 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view from around midday into the evening. Cloud is likely to hang lowest on western slopes; the eastern side should see somewhat higher bases and better breaks. Some rain is likely, with around 2-5 mm indicated; timing and local totals remain uncertain. Cold on top: air temperature broadly 4 to 8°C, feeling around -2 to 2°C in the wind - wrap up. Low confidence (Summit wind could be roughly 41-59 mph, which changes how difficult exposed walking may feel) - the summit peak could be anywhere from 41 to 59 mph; check again nearer the time.