Haycock weather forecast.

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

Cloud-free timing: Around 100% early, falling to around 80% later.

A mixed day on Haycock: summit wind broadly 15-30 mph, with gusts 30-40 mph around midday (strong winds). A meaningful thunderstorm risk is indicated from around midday into the evening. Avoid committing to exposed ridges if storms begin to build. Any cloud sits well above the tops (base 800-1500 m) - clear summits. Some rain is likely, with up to around 2 mm indicated; timing and local totals remain uncertain.

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

A grey, cloudy day on Haycock: summit wind broadly 15-30 mph, with gusts 30-40 mph during the evening (strong winds). A meaningful thunderstorm risk is indicated from early morning into around midday. Avoid committing to exposed ridges if storms begin to build. The ground is likely to be wet after recent rain. Cloud base mostly around 400–700 m through daylight. Expect the top to stay in cloud for most or all of daylight, with no dependable break. 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. Confidence moderate (forecast models agree on the walking impact of the wind) - the summit peak could reasonably be 21-31 mph, so treat the headline as mid-range.

Forecast confidence: Summit wind could be roughly 13-26 mph, which changes how difficult exposed walking may feel.

A grey, cloudy day on Haycock: summit wind broadly 10-20 mph, with gusts 15-25 mph around midday (fresh and blowy). The ground is likely to be wet after recent rain. Cloud base mostly around 400–700 m through daylight. 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. Some rain is likely, with around 2-5 mm indicated; timing and local totals remain uncertain. Confidence moderate (Summit wind could be roughly 13-26 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 13-26 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 0% early, improving to around 40% later.

A grey, cloudy day on Haycock: summit wind broadly 15-30 mph, with gusts 30-40 mph during the evening (strong winds). Thunderstorms are a significant hazard from early morning into the evening. Exposed summits and ridges are a poor choice while storms are nearby. The ground is likely to be wet after recent rain. There could be a spate risk based on forecast rainfall. Burns and unbridged crossings may rise quickly. Most likely from around 05:00 until around 03:00 the following day. Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Cloud base around 0–300 m in the morning, then around 900–1200 m around midday and 600–900 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view from midday into the afternoon. Cloud is likely to hang lowest on southern slopes; the northern side should see somewhat higher bases and better breaks. Some rain is likely, with around 5-10 mm indicated; timing and local totals remain uncertain. Confidence moderate (Summit wind could be roughly 16-34 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 16-34 mph, so treat the headline as mid-range.

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

Cloud-free timing: Around 0% early, improving to around 80% later.

A wild day on Haycock: summit wind broadly 40-55 mph, with gusts 65-75 mph during the afternoon (storm-force winds). Thunderstorms are possible from the morning into the afternoon. Keep an escape route from exposed ridges and descend if thunder develops. There could be a spate risk based on forecast rainfall. Burns and unbridged crossings may rise quickly. Most likely from around 00:00 until around 20:00. Much calmer lower down - generally 25-35 mph in the valley, rising towards the tops. Cloud base around 400-700 m in the morning, lifting to 800-1100 m around midday. The top is likely to drift in and out of cloud, with the best chance of a view from midday into the afternoon. Cloud is likely to hang lowest on western slopes; the eastern 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. 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 37-59 mph, which changes how difficult exposed walking may feel) - the summit peak could be anywhere from 37 to 59 mph; check again nearer the time.

Forecast confidence: Summit wind could be roughly 38-56 mph, which changes how difficult exposed walking may feel.

Cloud-free timing: Clear early, clouding up later.

A rough, clagged-in day on Haycock: summit wind broadly 35-50 mph, with gusts 60-70 mph around midday (storm-force winds). The ground is likely to be wet after recent rain. There could be a spate risk based on forecast rainfall. Burns and unbridged crossings may rise quickly. Most likely from around 08:00 until around 03:00 the following day. Much calmer lower down - generally 20-30 mph in the valley, rising towards the tops. Cloud base around 1400-1700 m in the morning, lowering to 500-800 m around midday. The summit should be clear early, with cloud building around midday. Cloud is likely to hang lowest on western slopes; the eastern 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. Cold on top: air temperature broadly 4 to 8°C, feeling around -4 to 0°C in the wind - wrap up. Confidence moderate (Summit wind could be roughly 38-56 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 38-56 mph, so treat the headline as mid-range.