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Rule Morning Frost

Morning Frost Forecast for Punkaharju, Southern Finland

Punkaharju, South Savo, Finland

A narrow pine-covered esker divides the waters of Puruvesi, producing repeating shorelines, elevated lake views, and strong aerial geometry.

Currently

Real-time conditions
Soil Temperature9725.9°C
Dew Point12.3°C (moderate dew point)
Wind Speed9.2m/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
  • Wind Speed99% of hours
  • Time Window83% 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 Punkaharju.

Explore Morning Frost conditions across Southern Finland →

Recorded match history

Completed PhotoWeather forecast matches recorded for this exact rule at Punkaharju 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/Helsinki
Time Window
Sunrise -45m to +90m
Frost Probability
≥ 60.0%
Wind Speed
≤ 1.5m/s
Sat, Aug 22
22:000%6.4m/s
23:000%6.1m/s
Sun, Aug 23
24:000%5.9m/s
01:000%6.6m/s
02:000%8m/s
03:000%9.6m/s
04:000%10m/s
05:000%9.2m/s
06:000%8.2m/s
07:000%7.7m/s
08:000%6.5m/s
09:000%4.2m/s
10:000%5.8m/s
11:000%4.9m/s
12:000%4.9m/s
13:000%5.2m/s
14:000%6m/s
15:000%6.5m/s
16:000%6.5m/s
17:000%6.3m/s
18:000%7m/s
19:000%7.4m/s
20:000%8.4m/s
21:000%8.7m/s
22:000%8.7m/s
23:000%9.2m/s
Mon, Aug 24
24:000%9.1m/s
01:000%9.4m/s
02:000%9.6m/s
03:000%9.5m/s
04:000%9.7m/s
05:000%9.8m/s
06:000%10m/s
07:000%9.8m/s
08:000%10m/s
09:000%10m/s
10:000%10m/s
11:000%11m/s
12:000%11m/s
13:000%11m/s
14:000%10m/s
15:000%10m/s
16:000%10m/s
17:000%10m/s
18:000%10m/s
19:000%10m/s
20:000%9.8m/s
21:000%9.5m/s
22:000%9.4m/s
23:000%9.7m/s
Tue, Aug 25
24:000%9.4m/s
01:000%8.9m/s
02:000%8.7m/s
03:000%8.3m/s
04:000%7.9m/s
05:000%7.6m/s
06:000%7.3m/s
07:000%7.4m/s
08:000%7.3m/s
09:000%7.3m/s
10:000%7.5m/s
11:000%7.2m/s
12:000%7m/s
13:000%7.1m/s
14:000%6.8m/s
15:000%6.5m/s
16:000%6.2m/s
17:000%5.7m/s
18:000%5.4m/s
19:000%4.9m/s
20:000%4.3m/s
21:000%4.1m/s
22:000%3.9m/s
23:000%3.8m/s
Wed, Aug 26
24:000%3.3m/s
01:000%2.6m/s
02:000%2.2m/s
03:000%2.2m/s
04:000%2.3m/s
05:000%2.3m/s
06:000%2.4m/s
07:000%2.4m/s
08:000%2.4m/s
09:000%2.4m/s
10:000%2.4m/s
11:000%2.5m/s
12:000%2.5m/s
13:000%2.4m/s
14:000%2.2m/s
15:000%2.1m/s
16:000%2m/s
17:000%1.8m/s
18:000%1.6m/s
19:000%1.5m/s
20:000%1.4m/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 05:29 Sunset 20:39
23:00
12°C 9726°C 13°C - 100% 0.09kPa
Mon, Aug 24 Sunrise 05:29 Sunset 20:39
24:00
12°C 9726°C 13°C - 100% 0.1kPa
01:00
12°C 9726°C 13°C - 100% 0.11kPa
02:00
12°C 9726°C 13°C - 100% 0.12kPa
03:00
12°C 9726°C 13°C - 100% 0.12kPa
04:00
12°C 9726°C 13°C - 100% 0.13kPa
05:00
12°C 9726°C 13°C - 100% 0.13kPa
06:00
12°C 9726°C 13°C - 100% 0.13kPa
07:00
12°C 9726°C 14°C - 100% 0.14kPa
08:00
12°C 9726°C 13°C - 100% 0.15kPa
09:00
12°C 9726°C 13°C - 100% 0.13kPa
10:00
12°C 9726°C 13°C - 100% 0.13kPa
11:00
12°C 9726°C 13°C - 100% 0.13kPa
12:00
12°C 9726°C 13°C - 100% 0.12kPa
13:00
12°C 9726°C 13°C - 100% 0.12kPa
14:00
12°C 9726°C 13°C - 100% 0.13kPa
15:00
12°C 9726°C 13°C - 100% 0.15kPa
16:00
12°C 9726°C 13°C - 100% 0.16kPa
17:00
12°C 9726°C 13°C - 100% 0.16kPa
18:00
12°C 9726°C 13°C - 100% 0.14kPa
19:00
11°C 9726°C 13°C - 100% 0.15kPa
20:00
11°C 9726°C 13°C - 100% 0.16kPa
21:00
11°C 9726°C 13°C - 100% 0.21kPa
22:00
11°C 9726°C 13°C - 100% 0.23kPa
23:00
11°C 9726°C 13°C - 80% 0.25kPa
Tue, Aug 25 Sunrise 05:31 Sunset 20:36
24:00
10°C 9726°C 13°C - 93% 0.28kPa
01:00
9.5°C 9726°C 13°C - 88% 0.32kPa
02:00
9.3°C 9726°C 13°C - 100% 0.32kPa
03:00
9.4°C 9726°C 13°C - 99% 0.31kPa
04:00
9.3°C 9726°C 13°C - 92% 0.3kPa
05:00
9.2°C 9726°C 12°C - 5% 0.28kPa
06:00
9°C 9726°C 12°C - 5% 0.25kPa
07:00
8.9°C 9726°C 12°C - 10% 0.27kPa
08:00
8.7°C 9726°C 13°C - 5% 0.33kPa
09:00
8.6°C 9726°C 13°C - 5% 0.39kPa
10:00
8.3°C 9726°C 13°C - 5% 0.44kPa
11:00
8.3°C 9726°C 14°C - 5% 0.5kPa
12:00
8.1°C 9726°C 15°C - 5% 0.57kPa
13:00
8°C 9726°C 15°C - 5% 0.62kPa
14:00
7.9°C 9726°C 15°C - 5% 0.67kPa
15:00
7.8°C 9726°C 15°C - 5% 0.69kPa
16:00
7.7°C 9726°C 16°C - 5% 0.73kPa
17:00
7.8°C 9726°C 16°C - 5% 0.74kPa
18:00
7.6°C 9726°C 16°C - 5% 0.73kPa
19:00
7.8°C 9726°C 15°C - 5% 0.68kPa
20:00
7.8°C 9726°C 14°C - 5% 0.59kPa
21:00
8.1°C 9726°C 14°C - 5% 0.49kPa
22:00
8.4°C 9726°C 13°C - 5% 0.44kPa
23:00
8.4°C 9726°C 13°C - 5% 0.42kPa
Wed, Aug 26 Sunrise 05:34 Sunset 20:33
24:00
8.3°C 9726°C 13°C - 5% 0.38kPa
01:00
8.2°C 9726°C 12°C - 5% 0.33kPa
02:00
8.2°C 9726°C 12°C - 5% 0.33kPa
03:00
8.1°C 9726°C 12°C - 5% 0.33kPa
04:00
8.8°C 6488°C 14°C - 17% 0.42kPa
05:00
9.4°C 3250°C 15°C - 30% 0.51kPa
06:00
10°C 13°C 16°C - 42% 0.62kPa
07:00
10°C 13°C 17°C - 30% 0.69kPa
08:00
10°C 13°C 18°C - 18% 0.76kPa
09:00
11°C 14°C 18°C - 6% 0.84kPa
10:00
11°C 14°C 18°C - 6% 0.83kPa
11:00
11°C 14°C 18°C - 5% 0.82kPa
12:00
11°C 14°C 18°C - 5% 0.81kPa
13:00
11°C 14°C 17°C - 34% 0.66kPa
14:00
11°C 14°C 16°C - 63% 0.52kPa
15:00
11°C 14°C 15°C - 91% 0.4kPa
16:00
11°C 14°C 15°C - 94% 0.39kPa
17:00
11°C 14°C 15°C - 97% 0.38kPa
18:00
11°C 14°C 15°C - 100% 0.37kPa
19:00
11°C 14°C 15°C - 100% 0.36kPa
20:00
11°C 14°C 15°C - 100% 0.34kPa
21:00
11°C 14°C 14°C - 100% 0.33kPa
22:00
11°C 14°C 14°C - 91% 0.29kPa
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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