Merrick weather forecast.

843 m summit forecast for wind, cloud, rain and temperature. Updated 25 August 2026 at 15:32 UTC.

At a glance

Today on Merrick.

Merrick on Tuesday 25 August 2026: summit wind around 34 mph SE, gusting 48 mph; modelled cloud-free summit for 64% of daylight; feels like 4°C; 0.0 mm rain.

High confidenceHow the forecast works

Seven-day Merrick forecast.

Conditions can change quickly with height. Use the day-by-day summit detail below, then check again close to departure.

High confidence
Wind34 mph SE Gusts48 mph Feels4°C Rain0.0 mm Cloud-free summit64% Cloud base1,026 m Freezing level3,280 m Daylight06:09–20:28 · 14.3 h

Cloud-free timing: Cloudy early, clearing later.

A wild day on Merrick: summit wind broadly 20-40 mph, with gusts 45-55 mph during the evening (gale-force winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base around 500–800 m in the morning, lifting to 1000–1300 m around midday and 1400–1700 m by late afternoon. Summit cloud should lift later, bringing a better chance of clear views. 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. Confidence moderate (forecast models agree on the walking impact of the wind) - the summit peak could reasonably be 33-37 mph, so treat the headline as mid-range.

Medium confidence
Wind37 mph SE Gusts52 mph Feels8°C Rain5.3 mm Cloud-free summit71% Cloud base1,484 m Freezing level2,990 m Daylight06:11–20:26 · 14.2 h

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

Thunder risk: moderate

from around midday into the evening. Leave exposed summits and ridges if thunder develops.

Cloud-free timing: Cloudy early, clearing later.

A wild day on Merrick: summit wind broadly 25-40 mph, with gusts 45-55 mph during the morning (gale-force winds). A meaningful thunderstorm risk is indicated from around midday into the evening. Avoid committing to exposed ridges if storms begin to build. Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base around 500–800 m in the morning, then around 3000–3300 m around midday and 1400–1700 m by late afternoon. Summit cloud should lift later, bringing a better chance of clear views. Cloud is likely to hang lowest on southeastern slopes; the northwestern 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.

Medium confidence
Wind17 mph E Gusts23 mph Feels11°C Rain3.4 mm Cloud-free summit29% Cloud base536 m Freezing level3,048 m Daylight06:13–20:24 · 14.2 h

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

Thunder risk: moderate

from around midday into the evening. Leave exposed summits and ridges if thunder develops.

Cloud-free timing: Best around midday at about 75%; around 0% early and 0% later.

A grey, cloudy day on Merrick: summit wind broadly 5-20 mph, with gusts 20-30 mph during the evening (fresh and blowy). A meaningful thunderstorm risk is indicated from around midday into the evening. Avoid committing to exposed ridges if storms begin to build. Cloud base around 500–800 m in the morning, then around 900–1200 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 from midday into the afternoon. Some rain is likely, with around 2-5 mm indicated; timing and local totals remain uncertain.

Medium confidence
Wind25 mph NW Gusts35 mph Feels8°C Rain0.8 mm Cloud-free summit0% Cloud base463 m Freezing level3,011 m Daylight06:15–20:21 · 14.1 h

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

Thunder risk: moderate

from around midday into the evening. Leave exposed summits and ridges if thunder develops.

A grey, cloudy day on Merrick: summit wind broadly 15-30 mph, with gusts 30-40 mph during the evening (strong winds). A meaningful thunderstorm risk is indicated from around midday into the evening. Avoid committing to exposed ridges if storms begin to build. Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. 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 northwestern slopes; the southeastern side should see somewhat higher bases and better breaks. Little or no rain expected. Confidence moderate (Summit wind could be roughly 19-33 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 19-33 mph, so treat the headline as mid-range.

Medium confidence
Wind13 mph W Gusts18 mph Feels7°C Rain1.2 mm Cloud-free summit36% Cloud base453 m Freezing level2,484 m Daylight06:17–20:19 · 14.0 h

Forecast confidence: Forecast models disagree on whether meaningful rain reaches the hills during 10:00-16:00.

Cloud-free timing: Around 0% early, improving to around 40% later.

A grey, cloudy day on Merrick: summit wind broadly 5-20 mph, with gusts 15-25 mph early in the morning (a moderate breeze). Cloud base around 400–700 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. Some rain is likely, with up to around 2 mm indicated; timing and local totals remain uncertain.

Medium confidence
Wind18 mph SW Gusts25 mph Feels5°C Rain2.0 mm Cloud-free summit36% Cloud base672 m Freezing level2,430 m Daylight06:19–20:16 · 13.9 h

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

Thunder risk: moderate

from the morning into the evening. Leave exposed summits and ridges if thunder develops.

Cloud-free timing: Best around midday at about 100%; around 0% early and 0% later.

A grey, cloudy day on Merrick: summit wind broadly 10-25 mph, with gusts 20-30 mph early in the morning (fresh and blowy). A meaningful thunderstorm risk is indicated from the 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 2900–3200 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 from the morning into the afternoon. Some rain is likely, with around 2-5 mm indicated; timing and local totals remain uncertain. Confidence moderate (Summit wind could be roughly 14-27 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 14-27 mph, so treat the headline as mid-range.

Medium confidence
Wind35 mph W Gusts49 mph Feels2°C Rain2.5 mm Cloud-free summit0% Cloud base685 m Freezing level2,386 m Daylight06:21–20:14 · 13.9 h

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

Thunder risk: low

from the morning into the evening. Leave exposed summits and ridges if thunder develops.

A rough, clagged-in day on Merrick: summit wind broadly 20-40 mph, with gusts 45-55 mph during the evening (gale-force winds). Thunderstorms are possible from the morning into the evening. Keep an escape route from exposed ridges and descend if thunder develops. Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Cloud base around 400–700 m in the morning, lifting to 600–900 m around midday and 700–1000 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 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 (Summit wind could be roughly 27-43 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 27-43 mph, so treat the headline as mid-range.

Forecast run: 2026-08-25

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