Rule Morning Frost

Morning Frost Forecast for Matterhorn, Alps

Zermatt, Valais, Switzerland

The Matterhorn’s pyramid summit rises above Zermatt’s larch slopes and alpine lakes, creating clean silhouettes, reflections and warm first-light studies.

Currently

Real-time conditions

Frost Probability

Soil Temperature6.7°C

Dew Point-1.1°C (low dew point)

Wind Speed1.2m/s (calm conditions)

Cloud Cover5%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Zurich

No opportunities in the next 14 days

See which requirements block the most forecast hours below.

Most common blockers (74-hour forecast)

Frost Probability100% of hours
Time Window83% of hours
Wind Speed81% of hours

How this forecast is evaluated

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

Explore Morning Frost conditions across Alps →

Recorded match history

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

Last 30 days

recorded matching windows

Last 90 days

recorded matching windows

Last 365 days

recorded matching windows · 64% average confidence

Most frequent recorded start hour

06:00 local time, shared by 21 of 56 matches recorded in the last 365 days.

Most represented month

April, with 18 of 56 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.

Create your own Morning Frost alerts

Get notified when these conditions match at your own locations.

Get this template

74-hour requirements breakdown

When available, the detailed table below covers only the stated 74-hour horizon (typically 72–168 hours, depending on available hourly data). Opportunity records above span the next 14 days, so this table does not explain that entire 14-day period.

What passed or failed, hour by hour

0matching hours in the next 74 hours

AND logic: all conditions required

Meets requirement

Misses requirement

Time Europe/Zurich	Time Window Sunrise -45m to +90m	Frost Probability ≥ 60.0%	Wind Speed ≤ 1.5m/s
Mon, Aug 24
07:00	✓	5%	0.69m/s
08:00	✓	5%	0.81m/s
09:00	✕	4.9%	1.1m/s
10:00	✕	4.9%	1.2m/s
11:00	✕	5%	1.2m/s
12:00	✕	4.3%	1.7m/s
13:00	✕	3.4%	1.9m/s
14:00	✕	0%	2.1m/s
15:00	✕	0%	1.9m/s
16:00	✕	0%	1.6m/s
17:00	✕	0%	3.4m/s
18:00	✕	0%	3.5m/s
19:00	✕	0%	4.2m/s
20:00	✕	0%	3m/s
21:00	✕	0%	2.7m/s
22:00	✕	0%	3.5m/s
23:00	✕	0%	2.9m/s
Tue, Aug 25
24:00	✕	0%	1.7m/s
01:00	✕	0%	2.5m/s
02:00	✕	2.1%	0.94m/s
03:00	✕	1.9%	1.9m/s
04:00	✕	1.6%	2.2m/s
05:00	✓	1.2%	1.8m/s
06:00	✓	1.8%	1.5m/s
07:00	✓	2.5%	1.5m/s
08:00	✓	1.7%	1.7m/s
09:00	✕	3.4%	2m/s
10:00	✕	4.3%	1.7m/s
11:00	✕	3.9%	1.6m/s
12:00	✕	0%	1.4m/s
13:00	✕	0%	1.1m/s
14:00	✕	0%	1.3m/s
15:00	✕	0%	1.7m/s
16:00	✕	0%	1.8m/s
17:00	✕	0%	1.8m/s
18:00	✕	0%	1.7m/s
19:00	✕	0%	1.7m/s
20:00	✕	0%	1.8m/s
21:00	✕	0%	1.5m/s
22:00	✕	0%	1.1m/s
23:00	✕	0%	0.4m/s
Wed, Aug 26
24:00	✕	2%	0.29m/s
01:00	✕	1.8%	0.93m/s
02:00	✕	1.8%	0.98m/s
03:00	✕	2.9%	1.4m/s
04:00	✕	3.1%	1.8m/s
05:00	✓	34%	1.5m/s
06:00	✓	34%	1.6m/s
07:00	✓	37%	1.7m/s
08:00	✓	37%	1.6m/s
09:00	✕	39%	1.7m/s
10:00	✕	33%	2m/s
11:00	✕	4.1%	2.3m/s
12:00	✕	3.5%	2.1m/s
13:00	✕	0%	2.1m/s
14:00	✕	0%	2.9m/s
15:00	✕	0%	3.6m/s
16:00	✕	0%	3.3m/s
17:00	✕	0%	2.6m/s
18:00	✕	0%	3.6m/s
19:00	✕	0%	2.3m/s
20:00	✕	0%	3.1m/s
21:00	✕	0%	4m/s
22:00	✕	0%	4.8m/s
23:00	✕	0.7%	5.6m/s
Thu, Aug 27
24:00	✕	0.7%	5.6m/s
01:00	✕	1%	5.6m/s
02:00	✕	0.8%	5.6m/s
03:00	✕	1%	5.7m/s
04:00	✕	1.4%	5.7m/s
05:00	✓	1.4%	5.8m/s
06:00	✓	0%	5.8m/s
07:00	✓	0%	5.9m/s
08:00	✓	0%	5.9m/s

How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Frost Probability mean?

Inputs that drive the score

This derived score summarizes multiple raw weather signals. The table below shows the supporting inputs hour by hour, so you can see what's pushing the score up or down.

Time Europe/Zurich	Dew Point °C	Surface Temperature °C	Temperature °C	Time Window	Total Cloud Coverage %	Vapor Pressure Deficit kPa
Mon, Aug 24 Sunrise 06:40 Sunset 20:22
10:00	-1.1°C	6.7°C	8.9°C	-	5%	0.58kPa
11:00	0.2°C	6.8°C	9.9°C	-	5%	0.6kPa
12:00	1.8°C	7°C	11°C	-	28%	0.59kPa
13:00	2.9°C	8°C	11°C	-	100%	0.55kPa
14:00	4.1°C	8.8°C	10°C	-	100%	0.45kPa
15:00	4.8°C	9.5°C	9.9°C	-	48%	0.36kPa
16:00	5°C	9.9°C	9.8°C	-	58%	0.34kPa
17:00	5.4°C	10°C	9°C	-	100%	0.25kPa
18:00	6.3°C	10°C	8°C	-	100%	0.12kPa
19:00	5.6°C	10°C	7.1°C	-	100%	0.1kPa
20:00	4.8°C	9.9°C	6.4°C	-	100%	0.1kPa
21:00 ☾	5.1°C	9.7°C	6°C	-	100%	0.06kPa
22:00 ☾	5°C	9.2°C	5.7°C	-	100%	0.04kPa
23:00 ☾	4°C	8.9°C	5.3°C	-	100%	0.08kPa
Tue, Aug 25 Sunrise 06:40 Sunset 20:22
24:00 ☾	3.2°C	8.7°C	4.4°C	-	100%	0.06kPa
01:00 ☾	2.3°C	8.4°C	4.9°C	-	100%	0.15kPa
02:00 ☾	1.9°C	8°C	4.5°C	-	100%	0.14kPa
03:00 ☾	2°C	7.7°C	4.2°C	-	100%	0.12kPa
04:00 ☾	2.7°C	7.4°C	4.3°C	-	100%	0.09kPa
05:00 ☾	3.3°C	7.2°C	4.3°C	-	100%	0.06kPa
06:00 ☾	3.2°C	7°C	4.7°C	-	100%	0.08kPa
07:00	2.9°C	6.8°C	4.3°C	-	34%	0.08kPa
08:00	3°C	6.6°C	4.9°C	-	74%	0.1kPa
09:00	2.9°C	6.7°C	6.2°C	-	25%	0.19kPa
10:00	2.4°C	7.1°C	7.2°C	-	23%	0.29kPa
11:00	2.2°C	7.7°C	8.3°C	-	68%	0.37kPa
12:00	2.3°C	8.3°C	9°C	-	98%	0.42kPa
13:00	2.4°C	8.6°C	8.7°C	-	100%	0.39kPa
14:00	2.6°C	8.7°C	8.4°C	-	98%	0.36kPa
15:00	2.9°C	9°C	8.6°C	-	95%	0.36kPa
16:00	3.1°C	9.4°C	8.8°C	-	71%	0.37kPa
17:00	3.3°C	9.7°C	9.1°C	-	100%	0.39kPa
18:00	3.5°C	9.9°C	9.3°C	-	100%	0.39kPa
19:00	4°C	9.9°C	8.8°C	-	100%	0.32kPa
20:00	4.3°C	9.7°C	7°C	-	64%	0.17kPa
21:00 ☾	3.1°C	9.2°C	4.8°C	-	41%	0.09kPa
22:00 ☾	2.9°C	8.7°C	4.3°C	-	44%	0.07kPa
23:00 ☾	2.5°C	8.1°C	3.8°C	-	69%	0.07kPa
Wed, Aug 26 Sunrise 06:41 Sunset 20:20
24:00 ☾	2.2°C	7.6°C	3.5°C	-	100%	0.07kPa
01:00 ☾	2.2°C	7.2°C	3.7°C	-	100%	0.08kPa
02:00 ☾	2°C	6.9°C	3.7°C	-	100%	0.09kPa
03:00 ☾	1.6°C	6.5°C	3.4°C	-	17%	0.09kPa
04:00 ☾	1.3°C	6.1°C	3.2°C	-	5%	0.1kPa
05:00 ☾	1°C	5.8°C	2.9°C	-	4%	0.09kPa
06:00 ☾	0.7°C	5.5°C	2.7°C	-	5%	0.1kPa
07:00	0.9°C	5.5°C	3°C	-	5%	0.11kPa
08:00	3.2°C	5.4°C	6.1°C	-	4%	0.17kPa
09:00	3.2°C	5.4°C	7.9°C	-	57%	0.3kPa
10:00	3.2°C	5.8°C	9°C	-	97%	0.38kPa
11:00	3.5°C	6.5°C	9.8°C	-	38%	0.42kPa
12:00	3.8°C	7.4°C	11°C	-	71%	0.47kPa
13:00	3.9°C	8.4°C	11°C	-	93%	0.54kPa
14:00	4.3°C	9.3°C	12°C	-	10%	0.58kPa
15:00	5.1°C	10°C	12°C	-	94%	0.56kPa
16:00	5°C	11°C	12°C	-	99%	0.51kPa
17:00	5.1°C	11°C	11°C	-	100%	0.47kPa
18:00	6.4°C	11°C	10°C	-	100%	0.27kPa
19:00	5.9°C	11°C	9.5°C	-	100%	0.25kPa
20:00	5.4°C	11°C	7.9°C	-	21%	0.17kPa
21:00 ☾	5.2°C	9.6°C	7.2°C	-	38%	0.13kPa
22:00 ☾	5.1°C	8.5°C	6.5°C	-	54%	0.09kPa
23:00 ☾	4.9°C	7.4°C	5.8°C	-	70%	0.06kPa
Thu, Aug 27 Sunrise 06:42 Sunset 20:18
24:00 ☾	5.3°C	7.3°C	6.3°C	-	80%	0.06kPa
01:00 ☾	5.7°C	7.2°C	6.7°C	-	90%	0.06kPa
02:00 ☾	6.2°C	7.2°C	7.1°C	-	100%	0.06kPa
03:00 ☾	6.8°C	7.4°C	8.3°C	-	89%	0.1kPa
04:00 ☾	7.4°C	7.7°C	9.4°C	-	79%	0.15kPa
05:00 ☾	8°C	8°C	11°C	-	68%	0.2kPa
06:00 ☾	8°C	8.6°C	12°C	-	79%	0.3kPa
07:00	7.9°C	9.2°C	13°C	-	89%	0.41kPa
08:00	7.8°C	9.8°C	14°C	-	99%	0.54kPa
09:00	8°C	10°C	14°C	-	99%	0.5kPa

How to read: these inputs help produce the derived score; they are not requirements by themselves.

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.

How opportunities work → Weather data sources →

Forecast generated

Aug 24, 2026, 7:34 AM UTC

Get Notified of Opportunities

Create your own custom alerts for this location and more.

Create Free Account