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Rule Morning Frost

Morning Frost Forecast for Ullapool, Scotland

Ullapool, Scotland, United Kingdom

Ullapool overlooks Loch Broom toward layered Northwest Highland peaks, with boats, shoreline curves and changing cloud building depth across the water.

Currently

Real-time conditions
Frost Probability
0%
Soil Temperature11.6°C
Dew Point8.6°C (moderate dew point)
Wind Speed2.0m/s (calm conditions)
Cloud Cover13%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London

No opportunities in the next 14 days

See which requirements block the most forecast hours below.

Most common blockers (93-hour forecast)

  • Frost Probability100% of hours
  • Wind Speed89% of hours
  • Time Window88% of hours

How this forecast is evaluated

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

Explore Morning Frost conditions across Scotland →

Recorded match history

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

Last 30 days
0
recorded matching windows
Last 90 days
0
recorded matching windows
Last 365 days
2
recorded matching windows · 68% average confidence

Only 2 completed matches are recorded in the last 365 days—insufficient history to identify a reliable typical start time or month.

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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93-hour requirements breakdown

When available, the detailed table below covers only the stated 93-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 93 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Time Window
Sunrise -45m to +90m
Frost Probability
≥ 60.0%
Wind Speed
≤ 1.5m/s
Sun, Aug 23
05:00✓0%2.1m/s
06:00✓0%2.1m/s
07:00✓0%2.1m/s
08:00✕0%1.6m/s
09:00✕0%1.5m/s
10:00✕0%2m/s
11:00✕0%2.7m/s
12:00✕0%3m/s
13:00✕0%2.9m/s
14:00✕0%3.8m/s
15:00✕0%4m/s
16:00✕0%4.6m/s
17:00✕0%3.6m/s
18:00✕0%2.6m/s
19:00✕0%1.7m/s
20:00✕0%1.1m/s
21:00✕0%0.36m/s
22:00✕0%0.6m/s
23:00✕0%1.3m/s
Mon, Aug 24
24:00✕0%1.7m/s
01:00✕0%2m/s
02:00✕0%1.8m/s
03:00✕0%1.9m/s
04:00✕0%2m/s
05:00✓0%2.2m/s
06:00✓0%2.2m/s
07:00✓0%2.3m/s
08:00✕0%1.8m/s
09:00✕0%1.6m/s
10:00✕0%1.5m/s
11:00✕0%1.1m/s
12:00✕0%0.82m/s
13:00✕0%1.4m/s
14:00✕0%2.1m/s
15:00✕0%2.3m/s
16:00✕0%2.4m/s
17:00✕0%2.2m/s
18:00✕0%2m/s
19:00✕0%1.5m/s
20:00✕0%1.1m/s
21:00✕0%0.47m/s
22:00✕0%1.1m/s
23:00✕0%1.7m/s
Tue, Aug 25
24:00✕0%2.2m/s
01:00✕0%2.7m/s
02:00✕0%2.9m/s
03:00✕0%2.9m/s
04:00✕0%3.2m/s
05:00✓0%3.1m/s
06:00✓0%3.2m/s
07:00✓0%3.1m/s
08:00✕0%3m/s
09:00✕0%3m/s
10:00✕0%2.8m/s
11:00✕0%2.6m/s
12:00✕0%2.4m/s
13:00✕0%2.5m/s
14:00✕0%2.9m/s
15:00✕0%2.8m/s
16:00✕0%2.4m/s
17:00✕0%2.9m/s
18:00✕0%3.5m/s
19:00✕0%2.7m/s
20:00✕0%2.9m/s
21:00✕0%3.2m/s
22:00✕0%3.2m/s
23:00✕0%3.4m/s
Wed, Aug 26
24:00✕0%3.5m/s
01:00✕0%3.7m/s
02:00✕0%3.9m/s
03:00✕0%3.9m/s
04:00✕0%3.9m/s
05:00✓0%4.1m/s
06:00✓0%4m/s
07:00✓0%4.1m/s
08:00✕0%4.1m/s
09:00✕0%4.3m/s
10:00✕0%4.4m/s
11:00✕0%4.3m/s
12:00✕0%4.1m/s
13:00✕0%5.9m/s
14:00✕0%4.8m/s
15:00✕0%3.7m/s
16:00✕0%2.6m/s
17:00✕0%2.7m/s
18:00✕0%2.9m/s
19:00✕0%3m/s
20:00✕0%2.9m/s
21:00✕0%2.8m/s
22:00✕0%2.7m/s
23:00✕0%2.2m/s
Thu, Aug 27
24:00✕0%1.6m/s
01:00✕0%1m/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/London
Dew Point
°C
Surface Temperature
°C
Temperature
°C
Time Window
Total Cloud Coverage
%
Vapor Pressure Deficit
kPa
Mon, Aug 24 Sunrise 06:03 Sunset 20:40
04:00 ☾
8.6°C 12°C 9.9°C - 13% 0.11kPa
05:00 ☾
8.3°C 11°C 9.6°C - 57% 0.1kPa
06:00 ☾
8.3°C 11°C 9.5°C - 92% 0.1kPa
07:00
8.7°C 11°C 10°C - 33% 0.11kPa
08:00
9.4°C 11°C 12°C - 18% 0.18kPa
09:00
10°C 11°C 13°C - 42% 0.29kPa
10:00
10°C 11°C 15°C - 5% 0.42kPa
11:00
10°C 12°C 16°C - 5% 0.57kPa
12:00
10°C 12°C 17°C - 8% 0.7kPa
13:00
9.7°C 13°C 17°C - 23% 0.76kPa
14:00
9.6°C 13°C 17°C - 44% 0.74kPa
15:00
9.7°C 14°C 16°C - 65% 0.66kPa
16:00
9.8°C 14°C 16°C - 61% 0.58kPa
17:00
9.8°C 14°C 15°C - 44% 0.54kPa
18:00
10°C 14°C 15°C - 22% 0.5kPa
19:00
10°C 14°C 15°C - 6% 0.42kPa
20:00
10°C 14°C 13°C - 33% 0.28kPa
21:00 ☾
9.7°C 14°C 12°C - 44% 0.22kPa
22:00 ☾
9.6°C 14°C 12°C - 37% 0.21kPa
23:00 ☾
9.7°C 13°C 12°C - 47% 0.19kPa
Tue, Aug 25 Sunrise 06:03 Sunset 20:40
24:00 ☾
9.8°C 13°C 12°C - 25% 0.17kPa
01:00 ☾
9.7°C 13°C 12°C - 72% 0.16kPa
02:00 ☾
9.6°C 13°C 12°C - 11% 0.18kPa
03:00 ☾
9°C 13°C 11°C - 5% 0.2kPa
04:00 ☾
8.5°C 12°C 11°C - 5% 0.22kPa
05:00 ☾
8.1°C 12°C 11°C - 66% 0.23kPa
06:00 ☾
8°C 12°C 11°C - 100% 0.23kPa
07:00
8.2°C 12°C 11°C - 100% 0.26kPa
08:00
9°C 12°C 13°C - 100% 0.31kPa
09:00
9.4°C 12°C 14°C - 82% 0.43kPa
10:00
9.5°C 12°C 16°C - 67% 0.59kPa
11:00
9.7°C 13°C 17°C - 100% 0.73kPa
12:00
9.7°C 13°C 18°C - 100% 0.82kPa
13:00
9.4°C 13°C 18°C - 100% 0.9kPa
14:00
9.1°C 14°C 19°C - 100% 0.99kPa
15:00
9°C 14°C 19°C - 100% 0.98kPa
16:00
9°C 14°C 19°C - 100% 0.98kPa
17:00
9.3°C 15°C 18°C - 100% 0.94kPa
18:00
11°C 15°C 18°C - 100% 0.72kPa
19:00
11°C 15°C 16°C - 95% 0.51kPa
20:00
11°C 15°C 14°C - 96% 0.32kPa
21:00 ☾
10°C 14°C 13°C - 100% 0.22kPa
22:00 ☾
10°C 14°C 12°C - 100% 0.17kPa
23:00 ☾
10°C 14°C 11°C - 100% 0.12kPa
Wed, Aug 26 Sunrise 06:05 Sunset 20:38
24:00 ☾
9.9°C 14°C 11°C - 100% 0.1kPa
01:00 ☾
9.6°C 14°C 11°C - 100% 0.08kPa
02:00 ☾
9.5°C 13°C 10°C - 92% 0.07kPa
03:00 ☾
9.2°C 13°C 10°C - 100% 0.07kPa
04:00 ☾
9.2°C 13°C 10°C - 100% 0.08kPa
05:00 ☾
9.1°C 13°C 10°C - 100% 0.1kPa
06:00 ☾
9.1°C 12°C 10°C - 100% 0.1kPa
07:00
9°C 12°C 10°C - 100% 0.12kPa
08:00
9.5°C 12°C 12°C - 100% 0.18kPa
09:00
10°C 12°C 13°C - 58% 0.29kPa
10:00
10°C 12°C 15°C - 100% 0.46kPa
11:00
11°C 13°C 17°C - 81% 0.62kPa
12:00
11°C 13°C 18°C - 89% 0.81kPa
13:00
11°C 13°C 19°C - 91% 0.87kPa
14:00
12°C 13°C 17°C - 92% 0.52kPa
15:00
11°C 13°C 14°C - 93% 0.25kPa
16:00
11°C 13°C 12°C - 94% 0.05kPa
17:00
11°C 13°C 12°C - 96% 0.07kPa
18:00
11°C 13°C 12°C - 98% 0.08kPa
19:00
12°C 13°C 13°C - 100% 0.09kPa
20:00
12°C 13°C 13°C - 100% 0.08kPa
21:00 ☾
12°C 13°C 13°C - 100% 0.07kPa
22:00 ☾
12°C 13°C 13°C - 100% 0.06kPa
23:00 ☾
12°C 13°C 13°C - 100% 0.06kPa
Thu, Aug 27 Sunrise 06:08 Sunset 20:35
24:00 ☾
12°C 13°C 13°C - 100% 0.07kPa
01:00 ☾
12°C 13°C 12°C - 100% 0.07kPa
02:00 ☾
12°C 13°C 13°C - 93% 0.12kPa
03:00 ☾
12°C 13°C 14°C - 87% 0.17kPa
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

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