A mixed day on Gibson Knott: summit wind broadly 10-30 mph, with gusts 25-35 mph early in the morning (strong winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Any cloud sits well above the tops (base 500-1600 m) - clear summits. Cloud will be lowest on the W slopes, down to about 900-1200 m; the E side should be clearer, lifting to around 1100-1400 m. Little or no rain expected.
Gibson Knott weather forecast.
420 m summit forecast for wind, cloud, rain and temperature. Updated from the Thursday 6 August 2026 model run.
Seven-day Gibson Knott forecast.
Conditions can change quickly with height. Use the day-by-day summit detail below, then check again close to departure.
A fine day on Gibson Knott: summit wind broadly 10-25 mph, with gusts 20-30 mph during the afternoon (fresh and blowy). Any cloud sits well above the tops (base 800-1100 m) - clear summits. Cloud will be lowest on the SW slopes, down to about 900-1200 m; the NE side should be clearer, lifting to around 1100-1400 m. Little or no rain expected.
A mixed day on Gibson Knott: summit wind broadly 15-25 mph, with gusts 25-35 mph around midday (strong winds). Any cloud sits well above the tops (base 500-1100 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 17-26 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 Gibson 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 500-1100 m) - clear summits. Cloud will be lowest on the SW slopes, down to about 700-1000 m; the NE side should be clearer, lifting to around 800-1100 m. Little or no rain expected. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 11 to 24 mph; check again nearer the time.
A mixed day on Gibson Knott: summit wind broadly 0-15 mph, with gusts 5-15 mph around midday (a moderate breeze). Any cloud sits well above the tops (base 500-1600 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 5 to 13 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.
A fine day on Gibson Knott: summit wind broadly 10-20 mph, with gusts 20-30 mph during the evening (fresh and blowy). Any cloud sits well above the tops (base 1000-1300 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 9 to 24 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.
A fine day on Gibson Knott: summit wind broadly 10-25 mph, with gusts 20-30 mph around midday (fresh and blowy). Any cloud sits well above the tops (base 600-1100 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 14 to 27 mph; check again nearer the time.
Forecast run: 2026-08-06
A forecast is part of the decision.
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.