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Rule Morning Frost

Morning Frost Forecast for Teijo, Southern Finland

Matildedal, Southwest Finland, Finland

Teijo combines quiet forest lakes, coastal wetlands, and old ironworks buildings around Mathildedal, with reeds and woodland reflected in calm water.

Currently

Real-time conditions
Soil Temperature14.2°C
Dew Point10.9°C (moderate dew point)
Wind Speed3.1m/s (calm conditions)
Cloud Cover77%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Helsinki

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
  • Wind Speed96% of hours
  • Time Window88% of hours

How this forecast is evaluated

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

Explore Morning Frost conditions across Southern Finland →

Recorded match history

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

Last 30 days
0
recorded matching windows
Last 90 days
0
recorded matching windows
Last 365 days
5
recorded matching windows · 62% average confidence

Only 5 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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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/Helsinki
Time Window
Sunrise -45m to +90m
Frost Probability
≥ 60.0%
Wind Speed
≤ 1.5m/s
Sat, Aug 22
22:000%6.6m/s
23:000%6.4m/s
Sun, Aug 23
24:000%7.3m/s
01:000%7.8m/s
02:000%8.2m/s
03:000%8.5m/s
04:000%7.9m/s
05:000%7.9m/s
06:000%8.1m/s
07:000%7.9m/s
08:000%7m/s
09:000%6.8m/s
10:000%6.1m/s
11:000%6.4m/s
12:000%6.1m/s
13:000%5.4m/s
14:000%5.6m/s
15:000%5.7m/s
16:000%5.3m/s
17:000%4.7m/s
18:000%4.6m/s
19:000%3.2m/s
20:000%2.7m/s
21:000%2.4m/s
22:000%2.8m/s
23:000%3.1m/s
Mon, Aug 24
24:000%3.2m/s
01:000%3.5m/s
02:000%3.5m/s
03:000%3.4m/s
04:000%3.3m/s
05:000%3.3m/s
06:000%3.3m/s
07:000%3.4m/s
08:000%3.7m/s
09:000%4.3m/s
10:000%4.8m/s
11:000%5.1m/s
12:000%5m/s
13:000%4.9m/s
14:000%4.7m/s
15:000%4.4m/s
16:000%4.5m/s
17:000%3.9m/s
18:000%3.2m/s
19:000%2.4m/s
20:000%2m/s
21:000%2.4m/s
22:000%2.5m/s
23:000%2.6m/s
Tue, Aug 25
24:000%2.7m/s
01:000%2.5m/s
02:000%2.6m/s
03:000%2.5m/s
04:000%2.3m/s
05:000%2.3m/s
06:000%2.4m/s
07:000%2.4m/s
08:000%2.6m/s
09:000%3m/s
10:000%3.2m/s
11:000%3.4m/s
12:000%3.5m/s
13:000%3.3m/s
14:000%3.3m/s
15:000%3.3m/s
16:000%3.2m/s
17:000%2.7m/s
18:000%2.1m/s
19:000%1.9m/s
20:000%1.7m/s
21:000%1.9m/s
22:000%2m/s
23:000%2.1m/s
Wed, Aug 26
24:000%2m/s
01:000%1.8m/s
02:000%1.6m/s
03:000%1.6m/s
04:000%1.5m/s
05:000%1.4m/s
06:000%1.4m/s
07:000%2.4m/s
08:000%3.3m/s
09:000%4.3m/s
10:000%4.2m/s
11:000%4m/s
12:000%3.8m/s
13:000%3.4m/s
14:000%2.9m/s
15:000%2.4m/s
16:000%2.1m/s
17:000%1.7m/s
18:000%1.4m/s
19:000%1.8m/s
20:000%2.1m/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/Helsinki
Dew Point
°C
Surface Temperature
°C
Temperature
°C
Time Window
Total Cloud Coverage
%
Vapor Pressure Deficit
kPa
Sun, Aug 23 Sunrise 06:01 Sunset 20:59
23:00
11°C 14°C 13°C - 77% 0.2kPa
Mon, Aug 24 Sunrise 06:01 Sunset 20:59
24:00
11°C 14°C 13°C - 100% 0.15kPa
01:00
11°C 14°C 13°C - 50% 0.17kPa
02:00
11°C 14°C 12°C - 5% 0.12kPa
03:00
11°C 13°C 12°C - 5% 0.09kPa
04:00
11°C 13°C 11°C - 10% 0.06kPa
05:00
10°C 13°C 11°C - 19% 0.06kPa
06:00
10°C 13°C 11°C - 89% 0.05kPa
07:00
10°C 13°C 11°C - 93% 0.1kPa
08:00
10°C 13°C 12°C - 49% 0.2kPa
09:00
10°C 13°C 14°C - 48% 0.38kPa
10:00
9.9°C 13°C 16°C - 57% 0.58kPa
11:00
9.8°C 13°C 17°C - 51% 0.73kPa
12:00
9.7°C 14°C 18°C - 50% 0.89kPa
13:00
9.4°C 14°C 19°C - 92% 1kPa
14:00
9.4°C 15°C 19°C - 100% 1kPa
15:00
9.6°C 15°C 19°C - 82% 0.97kPa
16:00
9.7°C 15°C 19°C - 74% 1kPa
17:00
9.5°C 16°C 19°C - 24% 1.1kPa
18:00
10°C 16°C 19°C - 64% 0.92kPa
19:00
11°C 16°C 17°C - 39% 0.65kPa
20:00
11°C 16°C 16°C - 11% 0.49kPa
21:00
11°C 16°C 14°C - 5% 0.29kPa
22:00
11°C 15°C 13°C - 5% 0.2kPa
23:00
10°C 15°C 12°C - 15% 0.16kPa
Tue, Aug 25 Sunrise 06:03 Sunset 20:56
24:00
10°C 15°C 12°C - 5% 0.14kPa
01:00
10°C 14°C 11°C - 5% 0.1kPa
02:00
10°C 14°C 11°C - 5% 0.07kPa
03:00
9.8°C 14°C 11°C - 5% 0.06kPa
04:00
9.7°C 13°C 10°C - 5% 0.05kPa
05:00
9.3°C 13°C 9.9°C - 4% 0.04kPa
06:00
9.1°C 13°C 9.7°C - 3% 0.04kPa
07:00
9.1°C 12°C 9.9°C - 4% 0.06kPa
08:00
9.4°C 12°C 12°C - 5% 0.19kPa
09:00
8.7°C 12°C 13°C - 5% 0.4kPa
10:00
8.3°C 13°C 15°C - 5% 0.64kPa
11:00
7.8°C 13°C 17°C - 6% 0.87kPa
12:00
7.4°C 13°C 18°C - 5% 1.1kPa
13:00
7.4°C 14°C 19°C - 8% 1.2kPa
14:00
7.4°C 15°C 20°C - 6% 1.3kPa
15:00
7.4°C 15°C 20°C - 36% 1.4kPa
16:00
7.4°C 16°C 21°C - 73% 1.4kPa
17:00
8.4°C 16°C 20°C - 99% 1.2kPa
18:00
11°C 16°C 18°C - 100% 0.82kPa
19:00
11°C 16°C 17°C - 100% 0.6kPa
20:00
12°C 16°C 17°C - 100% 0.55kPa
21:00
11°C 16°C 15°C - 100% 0.46kPa
22:00
11°C 16°C 15°C - 100% 0.39kPa
23:00
10°C 15°C 14°C - 100% 0.31kPa
Wed, Aug 26 Sunrise 06:06 Sunset 20:53
24:00
10°C 15°C 13°C - 71% 0.25kPa
01:00
10°C 15°C 13°C - 6% 0.22kPa
02:00
9.9°C 14°C 12°C - 18% 0.2kPa
03:00
9.8°C 14°C 12°C - 20% 0.19kPa
04:00
10°C 3251°C 14°C - 15% 0.31kPa
05:00
11°C 6489°C 15°C - 10% 0.46kPa
06:00
11°C 9726°C 17°C - 5% 0.65kPa
07:00
11°C 9726°C 17°C - 14% 0.64kPa
08:00
11°C 9726°C 17°C - 22% 0.64kPa
09:00
11°C 9726°C 17°C - 31% 0.64kPa
10:00
12°C 9726°C 17°C - 54% 0.62kPa
11:00
12°C 9726°C 18°C - 77% 0.6kPa
12:00
12°C 9726°C 18°C - 100% 0.57kPa
13:00
12°C 9726°C 18°C - 94% 0.57kPa
14:00
13°C 9726°C 18°C - 89% 0.56kPa
15:00
13°C 9726°C 18°C - 84% 0.56kPa
16:00
13°C 9726°C 17°C - 85% 0.54kPa
17:00
13°C 9726°C 17°C - 87% 0.52kPa
18:00
12°C 9726°C 17°C - 89% 0.5kPa
19:00
12°C 9726°C 17°C - 93% 0.5kPa
20:00
12°C 9726°C 17°C - 96% 0.5kPa
21:00
12°C 9726°C 17°C - 100% 0.49kPa
22:00
12°C 9726°C 17°C - 100% 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.

Forecast generated

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