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Rule Morning Frost

Morning Frost Forecast for Delft, The Netherlands

Delft, South Holland, The Netherlands

Narrow canals frame brick facades and arched bridges, while the Nieuwe Kerk tower provides a strong vertical above the market square.

Currently

Real-time conditions
Soil Temperature20.2°C
Dew Point16.6°C (high dew point)
Wind Speed7.3m/s (moderate winds)
Cloud Cover100%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Amsterdam

No opportunities in the next 14 days

See which requirements block the most forecast hours below.

Most common blockers (95-hour forecast)

  • Frost Probability100% of hours
  • Time Window88% of hours
  • Wind Speed81% of hours

How this forecast is evaluated

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

Explore Morning Frost conditions across The Netherlands →

Recorded match history

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

Last 30 days
0
recorded matching windows
Last 90 days
0
recorded matching windows
Last 365 days
0
recorded matching windows

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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95-hour requirements breakdown

When available, the detailed table below covers only the stated 95-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 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Amsterdam
Time Window
Sunrise -45m to +90m
Frost Probability
≥ 60.0%
Wind Speed
≤ 1.5m/s
Mon, Sep 7
24:000%3.6m/s
01:000%3m/s
02:000%2.9m/s
03:000%3.3m/s
04:000%3.2m/s
05:000%2.9m/s
06:000%3m/s
07:000%2.9m/s
08:000%3m/s
09:000%3.4m/s
10:000%4.5m/s
11:000%4.6m/s
12:000%5.1m/s
13:000%5.8m/s
14:000%6.2m/s
15:000%6.5m/s
16:000%6.3m/s
17:000%6.2m/s
18:000%6.2m/s
19:000%6.3m/s
20:000%7.1m/s
21:000%7.1m/s
22:000%6.7m/s
23:000%7.3m/s
Tue, Sep 8
24:000%7.3m/s
01:000%7.9m/s
02:000%7.6m/s
03:000%6.9m/s
04:000%6.1m/s
05:000%5.6m/s
06:000%4.7m/s
07:000%5.1m/s
08:000%4.4m/s
09:000%4.2m/s
10:000%4.8m/s
11:000%3.8m/s
12:000%4m/s
13:000%4.5m/s
14:000%3.1m/s
15:000%4.1m/s
16:000%5.8m/s
17:000%6.3m/s
18:000%4.6m/s
19:000%4.7m/s
20:000%5.8m/s
21:000%6m/s
22:000%5.4m/s
23:000%5.3m/s
Wed, Sep 9
24:000%5.4m/s
01:000%6.7m/s
02:000%6.9m/s
03:000%6.9m/s
04:000%6.9m/s
05:000%6.9m/s
06:000%6.5m/s
07:000%6.1m/s
08:000%6.1m/s
09:000%6m/s
10:000%6.2m/s
11:000%5.8m/s
12:000%5.3m/s
13:000%5.1m/s
14:000%5.5m/s
15:000%5.8m/s
16:000%5.1m/s
17:000%4.8m/s
18:000%4.8m/s
19:000%4.3m/s
20:000%3.5m/s
21:000%2.5m/s
22:000%2.3m/s
23:000%1.7m/s
Thu, Sep 10
24:000%1.4m/s
01:000%0.87m/s
02:000%0.8m/s
03:000%1m/s
04:000%1.3m/s
05:000%1.2m/s
06:000%1m/s
07:000%1.1m/s
08:000%1.3m/s
09:000%1.8m/s
10:000%2.3m/s
11:000%2.7m/s
12:000%2.3m/s
13:000%1.9m/s
14:000%1.5m/s
15:000%1.3m/s
16:000%1.1m/s
17:000%0.96m/s
18:000%1.2m/s
19:000%1.4m/s
20:000%1.7m/s
21:000%1.7m/s
22:000%1.7m/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/Amsterdam
Dew Point
°C
Surface Temperature
°C
Temperature
°C
Time Window
Total Cloud Coverage
%
Vapor Pressure Deficit
kPa
Tue, Sep 8 Sunrise 07:04 Sunset 20:15
24:00
17°C 20°C 19°C - 100% 0.37kPa
01:00
16°C 20°C 19°C - 100% 0.39kPa
02:00
16°C 20°C 19°C - 100% 0.4kPa
03:00
16°C 19°C 19°C - 100% 0.38kPa
04:00
15°C 19°C 19°C - 100% 0.42kPa
05:00
15°C 19°C 18°C - 100% 0.46kPa
06:00
14°C 19°C 18°C - 100% 0.48kPa
07:00
14°C 19°C 18°C - 100% 0.56kPa
08:00
13°C 19°C 18°C - 100% 0.65kPa
09:00
12°C 19°C 18°C - 100% 0.66kPa
10:00
13°C 19°C 18°C - 100% 0.62kPa
11:00
13°C 18°C 17°C - 100% 0.47kPa
12:00
14°C 18°C 17°C - 100% 0.44kPa
13:00
14°C 18°C 17°C - 100% 0.32kPa
14:00
14°C 18°C 16°C - 100% 0.2kPa
15:00
15°C 18°C 16°C - 100% 0.21kPa
16:00
15°C 17°C 16°C - 100% 0.18kPa
17:00
14°C 17°C 16°C - 100% 0.18kPa
18:00
14°C 17°C 16°C - 100% 0.16kPa
19:00
14°C 17°C 16°C - 100% 0.27kPa
20:00
14°C 16°C 15°C - 100% 0.19kPa
21:00
13°C 16°C 15°C - 100% 0.28kPa
22:00
9.9°C 16°C 15°C - 65% 0.48kPa
23:00
10°C 16°C 15°C - 0% 0.45kPa
Wed, Sep 9 Sunrise 07:05 Sunset 20:13
24:00
9.9°C 15°C 15°C - 2% 0.54kPa
01:00
9.6°C 15°C 16°C - 4% 0.59kPa
02:00
9.4°C 15°C 16°C - 11% 0.59kPa
03:00
9.7°C 15°C 15°C - 30% 0.52kPa
04:00
9.7°C 15°C 15°C - 100% 0.52kPa
05:00
9.6°C 15°C 16°C - 93% 0.57kPa
06:00
10°C 15°C 16°C - 46% 0.54kPa
07:00
11°C 15°C 15°C - 54% 0.48kPa
08:00
10°C 15°C 16°C - 60% 0.54kPa
09:00
9.8°C 16°C 16°C - 42% 0.64kPa
10:00
10°C 16°C 17°C - 55% 0.67kPa
11:00
10°C 16°C 17°C - 83% 0.7kPa
12:00
10°C 17°C 17°C - 96% 0.7kPa
13:00
10°C 17°C 17°C - 86% 0.67kPa
14:00
11°C 17°C 17°C - 97% 0.62kPa
15:00
11°C 17°C 17°C - 64% 0.55kPa
16:00
9.8°C 17°C 17°C - 79% 0.73kPa
17:00
9.1°C 18°C 17°C - 64% 0.8kPa
18:00
9.1°C 18°C 17°C - 68% 0.79kPa
19:00
9°C 18°C 17°C - 73% 0.75kPa
20:00
8.2°C 17°C 16°C - 20% 0.76kPa
21:00
8.2°C 17°C 16°C - 4% 0.68kPa
22:00
8.2°C 17°C 15°C - 0% 0.62kPa
23:00
8.1°C 16°C 15°C - 0% 0.59kPa
Thu, Sep 10 Sunrise 07:07 Sunset 20:11
24:00
8.1°C 16°C 15°C - 1% 0.58kPa
01:00
8°C 15°C 14°C - 1% 0.56kPa
02:00
7.9°C 15°C 14°C - 1% 0.55kPa
03:00
7.9°C 15°C 14°C - 5% 0.53kPa
04:00
7.9°C 14°C 14°C - 5% 0.51kPa
05:00
7.8°C 14°C 14°C - 100% 0.51kPa
06:00
7.6°C 14°C 14°C - 100% 0.51kPa
07:00
7.5°C 14°C 13°C - 63% 0.5kPa
08:00
7.6°C 14°C 13°C - 5% 0.5kPa
09:00
7.7°C 15°C 16°C - 36% 0.73kPa
10:00
7.4°C 16°C 18°C - 68% 1kPa
11:00
6.7°C 18°C 20°C - 100% 1.4kPa
12:00
7.3°C 18°C 19°C - 100% 1.1kPa
13:00
7.7°C 18°C 17°C - 100% 0.91kPa
14:00
7.9°C 18°C 16°C - 100% 0.72kPa
15:00
7.7°C 17°C 15°C - 100% 0.66kPa
16:00
7.6°C 17°C 14°C - 100% 0.59kPa
17:00
7.4°C 16°C 14°C - 100% 0.54kPa
18:00
7.3°C 16°C 14°C - 100% 0.52kPa
19:00
7.3°C 16°C 13°C - 100% 0.51kPa
20:00
7.2°C 15°C 13°C - 100% 0.5kPa
21:00
7.1°C 15°C 13°C - 100% 0.51kPa
22:00
7.1°C 15°C 13°C - 100% 0.51kPa
23:00
7°C 15°C 13°C - 100% 0.52kPa
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.

Forecast generated

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