159 m summit forecast for wind, cloud, rain and temperature. Updated from the Thursday 6 August 2026 model run.
Conditions can change quickly with height. Use the day-by-day summit detail below, then check again close to departure.
A fine day on Arnside Knott: summit wind broadly 10-25 mph, with gusts 20-30 mph during the morning (fresh and blowy). Any cloud sits well above the tops (base 800-1100 m) - clear summits. Cloud will be lowest on the W slopes, down to about 1000-1300 m; the E side should be clearer, lifting to around 1100-1400 m. Little or no rain expected.
A fine day on Arnside Knott: summit wind broadly 5-20 mph, with gusts 15-25 mph during the afternoon (fresh and blowy). Any cloud sits well above the tops (base 800-1100 m) - clear summits. Little or no rain expected.
A fine day on Arnside Knott: summit wind broadly 5-20 mph, with gusts 15-25 mph around midday (fresh and blowy). Any cloud sits well above the tops (base 500-2100 m) - clear summits. Little or no rain expected. Bright spells with UV up to 6 - sunscreen on exposed skin. Confidence moderate (ensemble members show a moderate spread) - the summit peak could reasonably be 11-17 mph, so treat the headline as mid-range. Cloud base is the least certain part of this - the models are only moderately agreed, so it could sit a couple of hundred metres either way.
A fine day on Arnside Knott: summit wind broadly 5-20 mph, with gusts 15-25 mph around midday (a moderate breeze). Any cloud sits well above the tops (base 500-800 m) - clear summits. Little or no rain expected. Bright spells with UV up to 5 - sunscreen on exposed skin. Confidence moderate (ensemble members show a moderate spread) - the summit peak could reasonably be 10-17 mph, so treat the headline as mid-range.
A mixed day on Arnside Knott: summit wind broadly 0-10 mph, with gusts 5-15 mph early in the morning (light winds). Any cloud sits well above the tops (base 900-1400 m) - clear summits. Some rain is likely, with around 2-5 mm indicated; timing and local totals remain uncertain. Bright spells with UV up to 6 - sunscreen on exposed skin. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 4 to 10 mph; check again nearer the time.
A fine day on Arnside Knott: summit wind broadly 5-20 mph, with gusts 15-25 mph during the evening (a moderate breeze). Any cloud sits well above the tops (base 1000-1600 m) - clear summits. Little or no rain expected. Bright spells with UV up to 6 - sunscreen on exposed skin. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 8 to 21 mph; check again nearer the time. Treat the cloud base with caution - the models disagree on humidity, so it could be well above or below the figure given.
A fine day on Arnside Knott: summit wind broadly 5-20 mph, with gusts 15-25 mph around midday (a moderate breeze). Any cloud sits well above the tops (base 700-1300 m) - clear summits. Little or no rain expected. Bright spells with UV up to 5 - sunscreen on exposed skin. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 8 to 18 mph; check again nearer the time. Cloud base is the least certain part of this - the models are only moderately agreed, so it could sit a couple of hundred metres either way.
Forecast run: 2026-08-06
Mountain weather can differ sharply from conditions in the valley. Check official warnings, carry appropriate navigation and clothing, and be ready to change the plan.