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Rule Morning Frost

Morning Frost Forecast for Saas-Fee, Alps

Saas-Fee, Valais, Switzerland

Saas-Fee is enclosed by glaciers and high summits, where traditional timber buildings, larch woods and ice-covered peaks create compact alpine layers.

13 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 Temperature0.3°C
Dew Point-3.5°C
Wind Speed4.6m/s
Cloud Cover75%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Zurich
First upcoming window
Moderate Frost at Sunrise
Saas-Fee
Mon, Oct 26 · 06:15–07:00 · 1h window
Low confidence
45%
❄️Frost Probability78%
Soil Temperature: 0.3°C
Dew Point: -9.5°C (low dew point)
Wind Speed: 1.4m/s (calm conditions)
Cloud Cover: 50%
thermometer-snow weather icon
Moderate Frost at Sunrise
Saas-Fee
Wed, Oct 28 · 06:18–08:33
❄️Frost Probability:63-79%
Low
thermometer-snow weather icon
Moderate Frost at Sunrise
Saas-Fee
Thu, Oct 29 · 06:19–08:00
❄️Frost Probability:75-78%
Low
thermometer-snow weather icon
Heavy Frost (radiative) at Sunrise
Saas-Fee
Fri, Oct 30 · 06:21–08:36
❄️Frost Probability:92-94%
High
thermometer-snow weather icon
Heavy Frost (radiative) at Sunrise
Saas-Fee
Sat, Oct 31 · 06:22–08:00
❄️Frost Probability:95-96%
High
thermometer-snow weather icon
Heavy Frost (radiative)
Saas-Fee
Sat, Oct 31 · 08:00–08:37
❄️Frost Probability:94%
Medium
thermometer-snow weather icon
Moderate Frost at Sunrise
Saas-Fee
Sun, Nov 1 · 06:24–08:00
❄️Frost Probability:82-83%
Medium
+6 more windows in the next 14 days

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-3.5°C0.3°C0.6°CUnavailable75%0.17kPa
Sat, Oct 24, 2026Sunrise · Sunset
Night-3.4°C0.2°C0°CUnavailable76%0.13kPa
Night-2.8°C-0.1°C-0.6°CUnavailable100%0.09kPa
Night-2.7°C-0.3°C-0.8°CUnavailable100%0.07kPa
Night-2.6°C-0.2°C-1.5°CUnavailable94%0.04kPa
Night-3.1°C-0.1°C-2.1°CUnavailable89%0.04kPa
Night-4.6°C-0.6°C-2.4°CUnavailable22%0.08kPa
Night-3.7°C-1.1°C-2.7°CUnavailable69%0.04kPa
Night-4.7°C-1.4°C-3.1°CUnavailable0%0.05kPa
-6°C-1.5°C-3°CUnavailable19%0.1kPa
-5.9°C-0.8°C-2.6°CUnavailable23%0.11kPa
-5.2°C0.1°C-1.7°CUnavailable0%0.12kPa
-4.6°C0.9°C-1.1°CUnavailable0%0.13kPa
-3.7°C1.7°C-0.5°CUnavailable0%0.12kPa
-3.6°C2.3°C0.1°CUnavailable0%0.15kPa
-3.5°C2.5°C0.4°CUnavailable0%0.16kPa
-3.3°C2.4°C0.6°CUnavailable56%0.16kPa
-3.3°C2.1°C0.6°CUnavailable86%0.16kPa
-3.5°C1.3°C0.4°CUnavailable90%0.16kPa
-4.2°C0.7°C0.4°CUnavailable89%0.18kPa
Night-4.3°C0.5°C0.3°CUnavailable96%0.18kPa
Night-4.5°C0.2°C0.3°CUnavailable85%0.19kPa
Night-5°C0.1°C0.6°CUnavailable100%0.22kPa
Night-4.5°C0.2°C0.7°CUnavailable98%0.21kPa
Night-3.7°C0.2°C0.8°CUnavailable100%0.18kPa
Sun, Oct 25, 2026Sunrise · Sunset
Night-2.7°C0.2°C0.3°CUnavailable97%0.12kPa
Night-2°C0.2°C-0.6°CUnavailable100%0.06kPa
NightUnavailableUnavailableUnavailableUnavailableUnavailableUnavailable
Night-1.1°C0.3°C0.2°CUnavailable100%0.06kPa
Night-0.3°C0.5°C2.3°CUnavailable100%0.12kPa
Night0.4°C0.7°C2.7°CUnavailable100%0.11kPa
Night1.1°C1.3°C3.1°CUnavailable99%0.1kPa
Night1.6°C1.9°C3.9°CUnavailable99%0.12kPa
1.9°C2.3°C4.4°CUnavailable72%0.13kPa
2.4°C2.8°C4.9°CUnavailable73%0.14kPa
3.1°C3.7°C5.4°CUnavailable40%0.13kPa
3.6°C5.5°C6.8°CUnavailable26%0.2kPa
4.1°C6.2°C7°CUnavailable49%0.18kPa
4.5°C7.2°C7.5°CUnavailable50%0.2kPa
4.8°C7.7°C7.7°CUnavailable56%0.19kPa
5.1°C7.7°C7.6°CUnavailable60%0.17kPa
4.9°C6.2°C6.6°CUnavailable74%0.11kPa
4.9°C5.8°C6.1°CUnavailable100%0.08kPa
4.9°C4.7°C5°CUnavailable100%0.01kPa
Night4.5°C4°C4.5°CUnavailable94%0kPa
Night2.9°C3.4°C5.9°CUnavailable83%0.18kPa
Night2°C2.9°C5.3°CUnavailable0%0.19kPa
Night1.2°C2.3°C4.5°CUnavailable0%0.18kPa
Night0.5°C1.7°C3.8°CUnavailable0%0.17kPa
Night-0.8°C1.4°C3.4°CUnavailable0%0.2kPa
Mon, Oct 26, 2026Sunrise · Sunset
Night-1.9°C1.3°C3°CUnavailable0%0.23kPa
Night-3.8°C1.3°C2.8°CUnavailable0%0.28kPa
Night-6.1°C0.9°C2.8°CUnavailable0%0.36kPa
Night-8.5°C0.1°C2.5°CUnavailable7%0.41kPa
Night-9.1°C0.1°C2.5°CUnavailable76%0.42kPa
Night-9.5°C0.3°C2.7°CUnavailable73%0.44kPa
Night-9.5°C0.3°C2.7°CUnavailable50%0.44kPa
Night-9.9°C0.3°C2.7°CUnavailable71%0.45kPa
-10°C0.3°C2.9°CUnavailable34%0.47kPa
-9.4°C0.9°C3.2°CUnavailable71%0.47kPa
-6.6°C2.8°C4.3°CUnavailable85%0.46kPa
-3.6°C4.4°C4.7°CUnavailable53%0.38kPa
-4.4°C5.8°C5.5°CUnavailable55%0.46kPa
-4.5°C6.2°C5.9°CUnavailable78%0.49kPa
-2.8°C7.3°C6.6°CUnavailable86%0.48kPa
-1.7°C8.2°C7.2°CUnavailable92%0.48kPa
0°C7.8°C7.2°CUnavailable69%0.41kPa
2.3°C6.4°C6.6°CUnavailable77%0.25kPa
Night0.9°C5.2°C6.4°CUnavailable79%0.31kPa
Night-0.7°C4.1°C5.8°CUnavailable77%0.34kPa
Night-1°C3.5°C5.5°CUnavailable87%0.33kPa
Night-0.9°C2.9°C5.4°CUnavailable58%0.32kPa

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 Saas-Fee.

Explore Morning Frost conditions across Alps →

Recorded match history

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

Last 30 days
5
recorded matching windows · 60% average confidence
Last 90 days
5
recorded matching windows · 60% average confidence
Last 365 days
27
recorded matching windows · 62% average confidence
Most frequent recorded start hour

08:00 local time, shared by 8 of 27 matches recorded in the last 365 days.

Most represented month

March, with 13 of 27 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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