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Rule Morning Frost

Morning Frost Forecast for Repovesi, Southern Finland

Repovesi Nationalpark, Kymenlaakso, Finland

Forested lakes lie below steep granite cliffs at Repovesi, where elevated views compress islands, ridges, and mist into layered compositions.

Currently

Real-time conditions
Soil Temperature13.0°C
Dew Point10.9°C (moderate dew point)
Wind Speed5.5m/s (moderate winds)
Cloud Cover100%

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
  • Time Window86% of hours
  • Wind Speed69% 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 Repovesi.

Explore Morning Frost conditions across Southern Finland →

Recorded match history

Completed PhotoWeather forecast matches recorded for this exact rule at Repovesi 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 · 75% 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%4.3m/s
23:000%5.3m/s
Sun, Aug 23
24:000%6.2m/s
01:000%7.4m/s
02:000%8.1m/s
03:000%7.9m/s
04:000%7.6m/s
05:000%7.4m/s
06:000%7.2m/s
07:000%6.7m/s
08:000%6.1m/s
09:000%6.2m/s
10:000%6.2m/s
11:000%6.2m/s
12:000%6.1m/s
13:000%6.1m/s
14:000%6m/s
15:000%5.8m/s
16:000%5.7m/s
17:000%6m/s
18:000%6.1m/s
19:000%6.1m/s
20:000%5.5m/s
21:000%5.4m/s
22:000%5.7m/s
23:000%5.5m/s
Mon, Aug 24
24:000%5.2m/s
01:000%5.3m/s
02:000%5.4m/s
03:000%5.3m/s
04:000%5.2m/s
05:000%5.2m/s
06:000%5m/s
07:000%5m/s
08:000%5.3m/s
09:000%5.3m/s
10:000%5.4m/s
11:000%5.5m/s
12:000%5.1m/s
13:000%5.4m/s
14:000%4.7m/s
15:000%6m/s
16:000%4.6m/s
17:000%5.1m/s
18:000%4.3m/s
19:000%3.9m/s
20:000%3.5m/s
21:000%3.2m/s
22:000%3.5m/s
23:000%2.9m/s
Tue, Aug 25
24:000%3m/s
01:000%2.9m/s
02:000%2.8m/s
03:000%2.7m/s
04:000%3.1m/s
05:000%3.1m/s
06:000%3.2m/s
07:000%3m/s
08:000%3.3m/s
09:000%4.5m/s
10:000%4.5m/s
11:000%4.5m/s
12:000%4.7m/s
13:000%4.6m/s
14:000%4.6m/s
15:000%4.4m/s
16:000%4.4m/s
17:000%4.3m/s
18:000%3.3m/s
19:000%2.7m/s
20:000%2.2m/s
21:000%2m/s
22:000%1.5m/s
23:000%1.3m/s
Wed, Aug 26
24:000%1.5m/s
01:000%1.4m/s
02:000%1.4m/s
03:000%1.3m/s
04:000%1.3m/s
05:000%1.3m/s
06:000%1.4m/s
07:000%1.2m/s
08:000%0.95m/s
09:000%0.74m/s
10:000%0.99m/s
11:000%1.2m/s
12:000%1.5m/s
13:000%1.4m/s
14:000%1.3m/s
15:000%1.2m/s
16:000%1.1m/s
17:000%0.97m/s
18:000%0.86m/s
19:000%0.74m/s
20:000%0.61m/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 05:41 Sunset 20:47
23:00
11°C 13°C 13°C - 100% 0.19kPa
Mon, Aug 24 Sunrise 05:41 Sunset 20:47
24:00
11°C 13°C 13°C - 100% 0.19kPa
01:00
11°C 13°C 13°C - 100% 0.18kPa
02:00
11°C 13°C 13°C - 100% 0.17kPa
03:00
11°C 13°C 13°C - 100% 0.15kPa
04:00
11°C 13°C 13°C - 99% 0.15kPa
05:00
11°C 13°C 12°C - 100% 0.16kPa
06:00
11°C 13°C 12°C - 100% 0.17kPa
07:00
11°C 13°C 13°C - 100% 0.18kPa
08:00
10°C 13°C 12°C - 100% 0.18kPa
09:00
10°C 12°C 12°C - 100% 0.19kPa
10:00
10°C 12°C 13°C - 97% 0.26kPa
11:00
11°C 13°C 13°C - 100% 0.26kPa
12:00
10°C 13°C 13°C - 90% 0.25kPa
13:00
11°C 13°C 14°C - 100% 0.34kPa
14:00
11°C 13°C 14°C - 60% 0.35kPa
15:00
10°C 13°C 16°C - 100% 0.55kPa
16:00
10°C 13°C 16°C - 82% 0.58kPa
17:00
11°C 13°C 16°C - 97% 0.56kPa
18:00
11°C 13°C 15°C - 94% 0.45kPa
19:00
11°C 13°C 15°C - 100% 0.4kPa
20:00
10°C 13°C 14°C - 100% 0.35kPa
21:00
9.9°C 13°C 13°C - 86% 0.24kPa
22:00
9.4°C 13°C 12°C - 44% 0.23kPa
23:00
9.1°C 13°C 11°C - 6% 0.18kPa
Tue, Aug 25 Sunrise 05:44 Sunset 20:44
24:00
8.9°C 13°C 11°C - 5% 0.15kPa
01:00
8.9°C 13°C 11°C - 5% 0.13kPa
02:00
8.9°C 12°C 10°C - 5% 0.09kPa
03:00
8.8°C 12°C 9.7°C - 5% 0.07kPa
04:00
8.6°C 12°C 9.8°C - 0% 0.09kPa
05:00
8.2°C 12°C 9.6°C - 5% 0.11kPa
06:00
7.9°C 12°C 9.4°C - 5% 0.11kPa
07:00
7.9°C 11°C 10°C - 1% 0.16kPa
08:00
8.2°C 11°C 12°C - 5% 0.29kPa
09:00
7.4°C 12°C 13°C - 2% 0.5kPa
10:00
6.8°C 12°C 15°C - 2% 0.68kPa
11:00
6.8°C 12°C 16°C - 8% 0.78kPa
12:00
7°C 12°C 16°C - 5% 0.86kPa
13:00
6.7°C 13°C 17°C - 5% 0.96kPa
14:00
6.4°C 13°C 18°C - 28% 1.1kPa
15:00
6.2°C 13°C 18°C - 5% 1.1kPa
16:00
6.3°C 14°C 18°C - 39% 1.1kPa
17:00
6.3°C 14°C 18°C - 5% 1.1kPa
18:00
7.6°C 14°C 18°C - 13% 1kPa
19:00
8.1°C 14°C 17°C - 63% 0.84kPa
20:00
8.8°C 14°C 14°C - 98% 0.52kPa
21:00
8.7°C 14°C 13°C - 19% 0.35kPa
22:00
8.4°C 14°C 12°C - 5% 0.27kPa
23:00
8°C 14°C 11°C - 5% 0.28kPa
Wed, Aug 26 Sunrise 05:46 Sunset 20:41
24:00
7.8°C 13°C 11°C - 5% 0.28kPa
01:00
7.8°C 13°C 11°C - 5% 0.24kPa
02:00
7.9°C 13°C 11°C - 5% 0.21kPa
03:00
8.1°C 13°C 10°C - 5% 0.18kPa
04:00
8.6°C 13°C 12°C - 37% 0.3kPa
05:00
9.1°C 13°C 14°C - 68% 0.44kPa
06:00
9.4°C 13°C 16°C - 100% 0.61kPa
07:00
9.4°C 13°C 16°C - 87% 0.69kPa
08:00
9.4°C 13°C 17°C - 74% 0.77kPa
09:00
9.4°C 14°C 18°C - 61% 0.86kPa
10:00
9.8°C 14°C 18°C - 62% 0.88kPa
11:00
10°C 14°C 19°C - 62% 0.91kPa
12:00
11°C 15°C 19°C - 63% 0.94kPa
13:00
11°C 15°C 18°C - 75% 0.69kPa
14:00
11°C 15°C 16°C - 86% 0.48kPa
15:00
12°C 15°C 15°C - 98% 0.3kPa
16:00
11°C 15°C 14°C - 72% 0.26kPa
17:00
11°C 15°C 14°C - 47% 0.21kPa
18:00
11°C 14°C 13°C - 22% 0.18kPa
19:00
11°C 14°C 13°C - 46% 0.15kPa
20:00
11°C 14°C 12°C - 70% 0.13kPa
21:00
11°C 14°C 12°C - 94% 0.11kPa
22:00
11°C 14°C 12°C - 96% 0.14kPa
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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