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Rule Morning Frost

Morning Frost Forecast for Zermatt, Alps

Zermatt, Valais, Switzerland

Zermatt provides Matterhorn views above larch forest, village rooftops and mountain lakes, with winter snow simplifying slopes into graphic tonal layers.

3 matching opportunities in the 14-day forecast.

Hourly forecast scores

Forecast valid from Oct 23, 2026, 9:00 PM UTC (one hour; not an observation)
Soil Temperature1.1°C
Dew Point-3.4°C
Wind Speed0.7m/s
Cloud Cover28%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Zurich
First upcoming window
Moderate Frost (radiative) at Sunrise
Zermatt
Fri, Oct 30 · 06:21–08:00 · 2h window
Low confidence
20%
❄️Frost Probability61-75%
Soil Temperature: 1.8°C
Dew Point: -4.8°C (low dew point)
Wind Speed: 1.2m/s (calm conditions)
Cloud Cover: 0%
thermometer-snow weather icon
Heavy Frost (radiative) at Sunrise
Zermatt
Mon, Nov 2 · 06:26–08:00
❄️Frost Probability:94-97%
Low
thermometer-snow weather icon
Heavy Frost (radiative)
Zermatt
Mon, Nov 2 · 08:00–08:41
❄️Frost Probability:96%
Low

71-hour requirements breakdown

When available, this detailed table covers only the stated 71-hour horizon (typically 72–168 hours, depending on available hourly data). Opportunity records above span the full 14-day forecast period, so this table does not explain that entire period. Times shown in Europe/Zurich.

Requirements breakdown is temporarily unavailable or expired. This does not mean no opportunities.

Supporting forecast inputs

Additional hourly values for interpreting the forecast and any derived scores. See the separate requirements breakdown for rule logic; missing values are unavailable.

Forecast time (Europe/Zurich)Dew PointSurface TemperatureTemperatureTime WindowTotal Cloud CoverageVapor Pressure Deficit
Fri, Oct 23, 2026Sunrise · Sunset
Night-3.4°C1.1°C0.9°CUnavailable28%0.18kPa
Sat, Oct 24, 2026Sunrise · Sunset
Night-3.8°C0.8°C0.5°CUnavailable85%0.17kPa
Night-3.9°C0.5°C0.4°CUnavailable85%0.17kPa
Night-4.7°C0.1°C0.9°CUnavailable100%0.22kPa
Night-2.6°C0.1°C0.4°CUnavailable93%0.13kPa
Night-5°C0.3°C0°CUnavailable68%0.19kPa
Night-4.7°C0.1°C-0.7°CUnavailable54%0.15kPa
Night-4.7°C-0.4°C-1.2°CUnavailable58%0.13kPa
Night-5.1°C-0.9°C-1.9°CUnavailable32%0.11kPa
-7.1°C-0.7°C-2°CUnavailable43%0.17kPa
-7.7°C0.2°C-0.7°CUnavailable49%0.24kPa
-8.1°C1.2°C0.9°CUnavailable86%0.32kPa
-7.9°C3°C1.7°CUnavailable97%0.35kPa
-7.5°C3.4°C2.4°CUnavailable100%0.38kPa
-7°C3.7°C2.9°CUnavailable94%0.39kPa
-7.1°C3.5°C3.4°CUnavailable74%0.42kPa
-6.6°C3.2°C3.4°CUnavailable88%0.41kPa
-5.5°C2.9°C2.9°CUnavailable88%0.35kPa
-5.4°C2°C2.5°CUnavailable100%0.32kPa
-4.7°C1.7°C2°CUnavailable96%0.28kPa
Night-3.3°C1.5°C1.4°CUnavailable100%0.2kPa
Night-3.4°C1.2°C0.5°CUnavailable96%0.16kPa
Night-3.6°C1.1°C0.5°CUnavailable97%0.16kPa
Night-2.9°C1°C0.8°CUnavailable99%0.16kPa
Night-2.6°C0.9°C0.8°CUnavailable100%0.14kPa
Sun, Oct 25, 2026Sunrise · Sunset
Night-1.7°C0.9°C1°CUnavailable100%0.12kPa
Night-0.9°C0.9°C1°CUnavailable100%0.09kPa
NightUnavailableUnavailableUnavailableUnavailableUnavailableUnavailable
Night0.3°C1.1°C1.3°CUnavailable100%0.05kPa
Night0.9°C1.2°C1.8°CUnavailable100%0.04kPa
Night1.2°C1.4°C2.4°CUnavailable100%0.06kPa
Night1.8°C2.2°C3.9°CUnavailable100%0.11kPa
Night2.6°C3.4°C6.1°CUnavailable100%0.21kPa
3.2°C3.2°C5.5°CUnavailable100%0.14kPa
3°C3.1°C4.8°CUnavailable100%0.1kPa
3.9°C4.4°C7.1°CUnavailable96%0.2kPa
4.4°C5.6°C8.2°CUnavailable92%0.25kPa
4.8°C6.9°C9.2°CUnavailable63%0.3kPa
5.1°C7.8°C9.7°CUnavailable63%0.32kPa
5.3°C8.8°C10°CUnavailable58%0.35kPa
6.1°C9.4°C11°CUnavailable54%0.36kPa
6°C7.9°C10°CUnavailable100%0.29kPa
5.7°C7.4°C9.2°CUnavailable65%0.24kPa
5.4°C7°C8.8°CUnavailable96%0.24kPa
Night5.2°C6.3°C8.3°CUnavailable96%0.21kPa
Night2.6°C5.8°C8.6°CUnavailable21%0.38kPa
Night0.1°C5.6°C7.4°CUnavailable0%0.41kPa
Night-1.3°C5.5°C6.4°CUnavailable0%0.4kPa
Night-3.2°C4.8°C5.9°CUnavailable0%0.45kPa
Night-3.9°C4.6°C5.4°CUnavailable0%0.44kPa
Mon, Oct 26, 2026Sunrise · Sunset
Night-5°C4.6°C5.1°CUnavailable0%0.46kPa
Night-6.1°C4.5°C4.2°CUnavailable0%0.44kPa
Night-6.8°C3.6°C3.1°CUnavailable0%0.4kPa
Night-9.2°C3°C3.4°CUnavailable0%0.48kPa
Night-11°C2.9°C4.1°CUnavailable42%0.56kPa
Night-12°C3.1°C4.6°CUnavailable69%0.6kPa
Night-12°C3.3°C5°CUnavailable39%0.63kPa
Night-13°C3.2°C5.1°CUnavailable29%0.65kPa
-13°C3.2°C5.7°CUnavailable31%0.7kPa
-12°C4.1°C6.3°CUnavailable36%0.72kPa
-7.9°C5.7°C7.3°CUnavailable62%0.68kPa
-3.1°C7.6°C8.4°CUnavailable53%0.62kPa
-2.8°C9.2°C9.5°CUnavailable43%0.69kPa
-3.3°C9.7°C10°CUnavailable33%0.75kPa
-2.1°C10°C11°CUnavailable52%0.75kPa
-0.4°C10°C11°CUnavailable43%0.7kPa
-0.7°C9.8°C11°CUnavailable88%0.74kPa
-4.8°C8.2°C11°CUnavailable78%0.91kPa
Night-2°C6.9°C10°CUnavailable77%0.73kPa
Night0.1°C6.1°C9.5°CUnavailable77%0.57kPa
Night1.5°C6°C8.4°CUnavailable79%0.42kPa
Night2.5°C5.8°C8°CUnavailable53%0.34kPa

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Morning Frost conditions across Alps. The requirements and hourly values above show how those signals apply at Zermatt.

Explore Morning Frost conditions across Alps →

Recorded match history

Completed PhotoWeather forecast matches recorded for this exact rule at Zermatt during the last 365 days.

Last 30 days
10
recorded matching windows · 61% average confidence
Last 90 days
10
recorded matching windows · 61% average confidence
Last 365 days
66
recorded matching windows · 64% average confidence
Most frequent recorded start hour

06:00 local time, shared by 23 of 66 matches recorded in the last 365 days.

Most represented month

April, with 18 of 66 matches recorded in the last 365 days.

These figures use completed PhotoWeather MatchEvent records from the previous 365 days only. They describe recorded forecast matches, not observations, climatological probability, or a guarantee of future conditions.

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How this forecast is made

Opportunities are threshold-based signals: PhotoWeather checks whether forecast conditions match the rules for a photography scenario. They are planning guidance, not guarantees. Forecasts can change as new model runs arrive, and confidence generally decreases farther into the forecast horizon, so recheck conditions before travelling.

The weather forecast foundation comes through Open-Meteo , which aggregates models from weather agencies. PhotoWeather applies condition-specific thresholds and derived calculations; not every condition uses every model or data input.

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